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Classification Resources
 

 [Search a list of Patent Appplications for class 76]   CLASS 76,METAL TOOLS AND IMPLEMENTS, MAKING
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SECTION I - CLASS DEFINITION

This class comprises special machines, processes, blanks, and dies for making tools, many of which are designated by the subclass titles, while the remainder are to be found in the proper miscellaneous subclasses.

The class includes mechanisms for sharpening various cutting-tools by the removal of the stock adjacent to the edge of the same by a cutting or filing action as distinguished from an abrading action. Mechanism for sharpening harrow-disks, etc., are included in this class because of their analogy to the other types of cutting sharpeners (see Subclass References to This Class, below).

This class also includes machines and processes for making dies, whether to be used as hand-operated implements or in forging or other machines.

General operation machines, though adapted by the substitution of special tool-forming dies to form tools, are classified in the general operation classes.

SECTION II - SUBCLASS REFERENCES TO THE CURRENT CLASS

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85+,for mechanism for sharpening harrow-disks, etc.

SECTION III - REFERENCES TO OTHER CLASSES

SEE OR SEARCH CLASS:

72, Metal Deforming,   appropriate subclasses for a process or an apparatus for shaping metal by merely deforming it, e.g., twisting a drill bit or rolling a saw blank, or the same including cutting; and subclasses 462+ for a tool, e.g., a die, per se.
100, Presses,   appropriate subclasses, for presses not elsewhere provided for.
493, Manufacturing Container or Tube From Paper; or Other Manufacturing From a Sheet or Web,   subclass 905 for cutting a peephole in a box blank.

SUBCLASSES

[List of Patents for class 76 subclass 1]    1MISCELLANEOUS:
 This subclass is indented under the class definition.  Machines for making tools and implements not classifiable elsewhere.
  
[List of Patents for class 76 subclass 2]    2Auger:
 Machines specially adapted to form augers.

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72, Metal Deforming,   subclasses 64+ and 298+. Machines for twisting augers.
409, Gear Cutting, Milling, or Planing,   subclasses 65+ for a machine for cutting a spiral groove in an auger.
  
[List of Patents for class 76 subclass 3]    3Clearing and lip-cutting:
 This subclass is indented under subclass 2.  Machines for cutting away the material of the auger-bit adjacent to the cutting edge to give clearance to the blade and also machines for forming the cutting-lips of the bit.

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451, Abrading,   for grinding, generally.
  
[List of Patents for class 76 subclass 4]    4Die-forming:
 Machines specially adapted to form dies to be used in metal shaping or forging machines or in punching-machines.

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82, Turning,   for pertinent subclass(es) as determined by schedule review.
100, Presses,   appropriate subclasses for presses not elsewhere provided for.
409, Gear Cutting, Milling, or Planing,   for a machine adapted to cut a die.
  
[List of Patents for class 76 subclass 5.1]    5.1Drill forming or sharpening:
 This subclass is indented under the class definition.  Machine specifically adapted to change a member having some of the physical characteristics of a drill (i.e., a drill blank) to a member having the physical characteristics of a drill; or (2) to make the cutting of a drill of better shape for cutting.

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72, Metal Deforming,   subclasses 64+ and 298+ for twisting metal to form a twist-drill blank.
409, Gear Cutting, Milling or Planing,   subclasses 65+ for milling a groove in a member to form a drill blank.
451, Abrading,   for sharpening a drill by grinding with an abrasive material.
  
[List of Patents for class 76 subclass 5.4]    5.4Forging:
 This subclass is indented under subclass 5.1.  Machine comprising changing a drill blank to a drill by the action of a pair of dies having opposite shape to that of the desired drill, that move toward each other to effect shaping.
  
[List of Patents for class 76 subclass 5.6]    5.6Punching:
 This subclass is indented under subclass 5.1.  Machine comprising changing a drill blank to a drill by the action of a fixed tool and a movable tool that moves toward the fixed tool to shape the blank therebetween.
  
[List of Patents for class 76 subclass 6]    6Eye-headed tool:
 Machines for forging tool-heads which are provided with eyes in which the handle is to be secured, also machines for piercing the eyes, and machines for making hammers, picks, mattocks, and hoes having eyes for the handles.

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72, Metal Deforming,   appropriate subclasses and particularly subclasses 343+ .
  
[List of Patents for class 76 subclass 7]    7Ax:
 This subclass is indented under subclass 6.  Machines specially adapted to forge and shape ax-polls and hatchet-heads.

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6,
  
[List of Patents for class 76 subclass 8]    8Adjustable header:
 This subclass is indented under subclass 7.  Machines having plungers or dies adapted to be adjusted in such a manner that ax-heads having different weights may be forged in the same dies.
  
[List of Patents for class 76 subclass 9]    9Socket, strap and tang tool:
 Machines adapted to forge and shape various tool-heads having handle-sockets (not eyes), straps, or tangs, including hoes, shovels, rakes, pitchforks, etc.
  
[List of Patents for class 76 subclass 10]    10Wrench:
 Machines specially adapted to forge and shape the parts of wrenches.
  
[List of Patents for class 76 subclass 11]    11Blank-splitting:
 Machines for splitting tool-blanks, usually for the purpose of forming the "straps" to which the handle is secured. Also machines for splitting ax-polls for the insertion of the steel bit.
  
[List of Patents for class 76 subclass 12]    12FILE CUTTING:
 This subclass is indented under the class definition.  Miscellaneous machines for forming the cutting ribs or teeth of files and rasps.
(1) Note. For electrolytic apparatus used to sharpen or resharpen files, see Class 204, Chemistry: Electrical and Wave Energy, subclasses 194+.
(2) Note. For electrolytic processes for sharpening or resharpening files, see Class 205, Electrolysis: Processes, Compositions Used Therein, and Methods of Preparing the Compositions, subclass 664.

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28,for machines which form saw teeth by forcing a chisel into the edge of a blank to cut and swage up the teeth.

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29, Metal Working,   subclass 77 for machines and processes for preparing file-blanks by filing the surfaces of the rough blanks.
72, Metal Deforming,   for forging and swaging apparatus peculiarly adapted for forging toothed articles such as milling cutters, tapping tools, etc.
204, Chemistry: Electrical and Wave Energy,   subclasses 194+ for an electrolytic apparatus used to sharpen or resharpen a file or rasp.
205, Electrolysis: Processes, Compositions Used Therein, and Methods of Preparing the Compositions,   subclass 664 for electrolytic sharpening or resharpening of a file or rasp.
451, Abrading,   for a process of or machine for cleaning or resharpening a file by means of a blast of sand or other abrading material.
  
[List of Patents for class 76 subclass 13]    13Rasp-punching:
 This subclass is indented under subclass 12.  Machines specially adapted to form rasping-teeth upon file-blanks, usually by swaging up the teeth from the surface of the blank by means of punches. These machines are usually characterized by mechanism adapted to shift the bed or the tool in such a manner as to form the teeth in staggered rows.
  
[List of Patents for class 76 subclass 14]    14Swaging:
 This subclass is indented under subclass 12.  Machines which force up the file-ribs by means of a cutter or punch which is actuated by pressure as distinguished from a blow.

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13,

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72, Metal Deforming,   subclasses 184+ for "roller" grooving of work, and other appropriate subclasses for metal deforming by other means.
  
[List of Patents for class 76 subclass 15]    15Trip-operated cutter:
 This subclass is indented under subclass 12.  Machines in which the cutter is raised against a spring or weight by means of a trip-cam or other device, which upon release causes the cutter to strike a blow upon the file-blank.
  
[List of Patents for class 76 subclass 16]    16Blow-controlled:
 This subclass is indented under subclass 15.  Machines in which the cutter is raised against a spring or weight by means of a trip-cam, which upon release causes the cutter to strike a blow upon the file-blank and which is provided with means, usually automatic, for increasing or decreasing the force of the blow in conformity to the width or thickness of the file-blank as it is fed beneath the cutter.
  
[List of Patents for class 76 subclass 17]    17Idle cutter, hammer-operated:
 This subclass is indented under subclass 12.  Machines in which the cutter is supported over the blank, usually by a spring, and is struck by a hammer, generally power-operated.
  
[List of Patents for class 76 subclass 18]    18Blow-controlled:
 This subclass is indented under subclass 17.  Machines in which the cutter is supported over the blank, usually by a spring, and is struck by a power-operated hammer, the force of the blow being increased or diminished, usually automatically in conformity to the width or thickness of the file-blank as it is fed beneath the cutter.
  
[List of Patents for class 76 subclass 19]    19Pressers:
 This subclass is indented under subclass 12.  Pressers for holding the file-blank upon the bed of the file-cutting machine.

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100, Presses,   appropriate subclasses for presses not elsewhere provided for.
  
[List of Patents for class 76 subclass 20]    20Beds and clamps:
 This subclass is indented under subclass 12.  Beds for supporting the file-blanks, also the clamps for securing said blanks to the beds.
(1) Note. The beds in this class are mostly of the oscillating type.
  
[List of Patents for class 76 subclass 21]    21Cutter heads:
 This subclass is indented under subclass 12.  Cutter-heads and holders for the cutting-tool or punch of file or rasp making machines.
  
[List of Patents for class 76 subclass 22]    22Feeding:
 This subclass is indented under subclass 12.  Miscellaneous devices for feeding the blanks to the file cutting or punching mechanisms.

SEE OR SEARCH CLASS:

226, Advancing Material of Indeterminate Length,   appropriate subclasses for methods of, and apparatus for, feeding material without utilizing the leading or trailing ends to effect movement of the material.
  
[List of Patents for class 76 subclass 23]    23Screw-operated:
 This subclass is indented under subclass 22.  Mechanisms for feeding the blanks to the file cutting or punching devices, comprising a screw-feed for advancing the blank carriage or clamp.
  
[List of Patents for class 76 subclass 24.1]    24.1Process:
 This subclass is indented under subclass 12.  Method of forming cutting ribs or teeth on the surface of a file or rasp.

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204, Chemistry: Electrical and Wave Energy,   subclasses 194+ for an electrolytic apparatus used to sharpen or resharpen a file or rasp.
205, Electrolysis: Processes, Compositions Used Therein, and Methods of Preparing the Compositions,   subclass 664 for electrolytic sharpening or resharpening of a file or rasp.
  
[List of Patents for class 76 subclass 24.5]    24.5Chemically sharpening:
 This subclass is indented under subclass 24.1.  Method of restoring previously sharpened cutting edges of a file or rasp to sharp condition by application of a chemical that modifies the surface characteristics thereof.
  
[List of Patents for class 76 subclass 25.1]    25.1SAW-MAKING OR FURBISHING DEVICE OR MACHINE:
 This subclass is indented under the class definition.  Miscellaneous apparatus for changing a saw blank into a toothed saw blade or for treating a saw blade to make it more suitable for sawing.
(1) Note. A "saw blank" normally comprises a metallic sheet having two generally parallel planar surfaces and a perimeter; a "saw blade" is similar in structure but has formed along at least a portion of the perimeter a series of aligned cutting teeth intended to follow each other in a cutting action.
(2) Note. The apparatus of this subclass may ba a randomly manipulated hand tool, i.e., a "device" or it may be a base mounted structure, i.e., a "machine".

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112,for method of changing a saw blank into a toothed saw blade, and for a saw blank, per se.

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451, Abrading,   for grinding to shape, generally, including sharpening a drill or other tool, other than a saw. Note that abrading to sharpen a saw, contrary to the general line between Class 76 and Class 451, is included in Class 76.
  
[List of Patents for class 76 subclass 26]    26Hammer:
 Machines for stretching and straightening saw-blades or sections thereof for the purpose of reducing "buckled" portions by means of a hammering action; also devices for supporting saws upon anvils, thus adapting them to be stretched by a manually-operated tool.
  
[List of Patents for class 76 subclass 27]    27Roller:
 Machines for stretching and straightening saw-blades, comprising a pair of rollers or a roller and bed, between which the saw-blade is passed.

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492, Roll or Roller,   for a roll, per se, not elsewhere provided for, and see the notes thereunder.
  
[List of Patents for class 76 subclass 28]    28Chisel-cutting:
 Machines in which saw-teeth are formed upon a blank by means of a chisel, which, being forced into the edge of the blank cuts and swages up the saw-teeth, also machines having chisel-cutters adapted to shave the tooth, the line of movement of the cutter being in the plane of the disk.

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12+,

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72, Metal Deforming,   subclasses 325+ for a composite metal deforming and cutting tool.
  
[List of Patents for class 76 subclass 29]    29Die-cutting:
 Machines for notching the blank to form saw-teeth by means of a cutting-die or punch.

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30,

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83, Cutting,   appropriate subclasses for cutting devices generally, and particularly subclass 917 for notching devices.
  
[List of Patents for class 76 subclass 30]    30Die cutting:
 Machines which remove the metal at the bases of saw-teeth to lengthen the teeth by means of a die-cutter or punch.

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29,

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83, Cutting,   appropriate subclasses and particularly subclass 917 (notching).
  
[List of Patents for class 76 subclass 31]    31Reciprocating tool:
 Machines for sharpening saws in which a file or sharpening tool is positively guided in its reciprocation across the saw. The patents in this subclass are mainly hand-operated devices.
  
[List of Patents for class 76 subclass 32]    32Gin saws:
 This subclass is indented under subclass 31.  Machines provided with reciprocating sharpening tools especially adapted to sharpen gin-saws. These machines are usually characterized by crossed files.

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37,and indented subclasses for machines for sharpening gin-saws by means of a rotary file or grinder are classified in this class, subclass
  
[List of Patents for class 76 subclass 33]    33Traveling tool carriage:
 This subclass is indented under subclass 31.  Machines for sharpening the teeth of saws by means of a reciprocating file or tool in which the carriage supporting the filing mechanism is automatically moved forward as the successive teeth are sharpened.

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31,for machines in which the carriage is fed forward by hand.
  
[List of Patents for class 76 subclass 34]    34Clamp feed:
 This subclass is indented under subclass 31.  Machines in which the saw-teeth are sharpened by a reciprocating file or tool and which are provided with automatic means for feeding the saw-clamp forward as the successive teeth are sharpened.

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76,for clamp-feeding mechanism.
  
[List of Patents for class 76 subclass 35]    35Tooth-engaging feed:
 This subclass is indented under subclass 31.  Machines in which the saw-teeth are sharpened by a reciprocating file or tooth and which are provided with means for engaging the teeth of the saw and feeding it forward as the successive teeth are sharpened.

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226, Advancing Material of Indeterminate Length,   subclasses 52+ for means to engage modifications in material to advance the material.
  
[List of Patents for class 76 subclass 36]    36File holders and guides:
 This subclass is indented under subclass 31.  File-holders having guides or indicators attached to and carried by the file in its movement which show to the operator the angle at which the file is being held.

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31,for guides supported by the saw-clamp.

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407, Cutters, for Shaping,   subclass 29.15 for a file or rasp holder, per se.
  
[List of Patents for class 76 subclass 37]    37Rotating tool:
 Miscellaneous machines which sharpen the teeth of saws by means of a rotary file, milling-tool, or abrading-tool, not classifiable in the following subclasses.

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408, Cutting by Use of Rotating Axially Moving Tool,   appropriate subclasses, for drilling machines which feed the work or tool or both relative to one another along the axis of rotation of the tool; and see the Notes thereto for other machines in which a rotating tool is fed relative to work.
  
[List of Patents for class 76 subclass 38]    38Spiral:
 This subclass is indented under subclass 37.  Machines which sharpen the teeth of saws by means of a helical or spiral file, cutter, or abrading devices.

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409, Gear Cutting, Milling, or Planing,   subclasses 1+ for gear cutting, generally.
  
[List of Patents for class 76 subclass 39]    39Switch-cam feed:
 This subclass is indented under subclass 37.  Machines which sharpen saws by means of a rotary file or abrading-disk having oblique or helical ribs adapted to engage the teeth of the saw for the purpose of feeding the saw forward. The disks or cutters in this class of machines usually have a section broken away to permit the feeding of the saw.
  
[List of Patents for class 76 subclass 40]    40Pivoted gate:
 This subclass is indented under subclass 37.  Machines for sharpening the teeth of saws in which a rotary file or abrading-tool carried by a pivoted gate or bracet is adapted to be swung toward and from the saw-blade.
  
[List of Patents for class 76 subclass 41]    41Sliding gate:
 This subclass is indented under subclass 37.  Machines for sharpening the teeth of saws in which a rotary file or abrading-tool supported upon a sliding gate is adapted to be reciprocated toward and from the saw-blade.
  
[List of Patents for class 76 subclass 42]    42Pivoted saw carriage:
 This subclass is indented under subclass 37.  Machines for sharpening the teeth of saws by means of a rotating file, cutter, or abrading-tool in which the saw is supported upon a pivoted carriage and adapted to be swung against the rotating tool.
  
[List of Patents for class 76 subclass 43]    43Sliding saw carriage:
 This subclass is indented under subclass 37.  Machines for sharpening saws by means of a rotating file, cutter or abrading-tool in which the saw is supported upon a sliding carriage and is adapted to be reciprocated into contact with the rotating tool.
  
[List of Patents for class 76 subclass 44]    44Milling:
 This subclass is indented under subclass 37.  Machines which remove the metal at the bases of saw-teeth to lengthen the teeth by means of milling-cutters. This subclass also includes machines having annular cutters.
  
[List of Patents for class 76 subclass 45]    45Disks and cutters:
 This subclass is indented under subclass 37.  Filing, grinding, or other disks or cutters especially adapted for sharpening and gumming saw-teeth. This subclass includes spiral files.

SEE OR SEARCH CLASS:

83, Cutting,   subclasses 174+ for tool sharpeners for cutting devices.
407, Cutters, for Shaping,   subclasses 30+ for a rotary cutter which may be the product of the device of this subclass.
  
[List of Patents for class 76 subclass 46]    46Dressing, jointing and gauging:
 This subclass is indented under subclass 25.1.  Machines and implements in which devices for truing, the teeth of saws by side-dressing or making the teeth of uniform length are combined with a gage which is adapted to determine the relative length of the teeth or the amount of set of the teeth.
  
[List of Patents for class 76 subclass 47.1]    47.1Dressing or jointing:
 This subclass is indented under subclass 25.1.  Furbishing apparatus for (1) making the side surface of aligned teeth of the saw blade touch a common plane parallel with the plane of a planar surface of the blade; or (2) making the teeth of a desired common height.
  
[List of Patents for class 76 subclass 48]    48Circular saw:
 This subclass is indented under subclass 47.1.  Devices specially adapted to true the teeth of circular saws in such a manner that the points of all the teeth will lie in the circumference of a circle; also devices for truing the sides of the teeth of saws.
  
[List of Patents for class 76 subclass 49]    49Compressing:
 This subclass is indented under subclass 47.1.  Machines and implements for shaping and truing the points and sides of the teeth of saws by swaging. These machines are generally adapted to be used on circular saws.
  
[List of Patents for class 76 subclass 50]    50Rotary tool:
 This subclass is indented under subclass 47.1.  Machines having rotary cutting or abrading devices for truing the points and sides of the teeth of saws.
  
[List of Patents for class 76 subclass 50.2]    50.2Band saw dressing:
 This subclass is indented under subclass 47.1.  Furbishing for making the side surface of aligned teeth of a saw blade touch a common plane parallel with the plane of a planar surface of the blade; wherein the blade comprises a flexible, endless ribbon.
  
[List of Patents for class 76 subclass 50.4]    50.4Jointing:
 This subclass is indented under subclass 47.1.  Furbishing apparatus,1 for making the teeth of a desired common height.
  
[List of Patents for class 76 subclass 51]    51Swaging:
 This subclass is indented under subclass 25.1.  Miscellaneous implements, machines, and processes for widening the points of the teeth of saws, not classifiable in the following subclasses. This subclass also includes devices for "knocking down" the points of the teeth of saws.

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72, Metal Deforming,   for metal swaging or forging apparatus generally.
  
[List of Patents for class 76 subclass 52]    52Lever-operated:
 Machines in which the swaging-tool is pivotally supported and is forced forward to swage the tooth by means of a lever or system of levers.

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63,
  
[List of Patents for class 76 subclass 53]    53Lever-operated:
 Machines in which the swage is slidably mounted and is adapted to be forced forward to swage the tooth by means of a lever or a system of levers.

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68,
  
[List of Patents for class 76 subclass 54]    54Cam swage:
 This subclass is indented under subclass 51.  Machines for widening the points of the teeth of saws by means of camfaced swages, the swages being in many instances provided with rollers. These machines are used for sharpening or renewing the teeth of saws. This subclass also includes cam-swaging machines for "knocking down" the points of teeth and for swaging the raker-teeth of crosscut-saws.
  
[List of Patents for class 76 subclass 55]    55Idle swage:
 This subclass is indented under subclass 51.  Machines for swaging the teeth of saws in which the tooth is supported upon an anvil and a punch normally supported in proper position over the anvil, usually by a spring, is adapted to be struck by a hammer.

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65,and 70.
  
[List of Patents for class 76 subclass 56]    56Tools:
 This subclass is indented under subclass 51.  Implements for swaging the teeth of saws, usually "punches", having properly formed swaging-faces adapted to be held in the hand and struck by a hammer; also tools for "knocking down" the points of the saw-teeth.
  
[List of Patents for class 76 subclass 57]    57Anvils:
 This subclass is indented under subclass 51.  Specially-formed anvils upon which the saw tooth is held by means of clamps or otherwise and the tooth swaged by being struck with a hammer or a punch held in the hand.

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73,

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72, Metal Deforming,   subclasses 457+ and 476+ for a metal working anvil, per se, not otherwise provided for.
  
[List of Patents for class 76 subclass 58]    58Setting:
 This subclass is indented under subclass 25.1.  Miscellaneous machines, implements, and processes for bending the teeth of saws laterally in order to give proper clearance in the cut or kerf made by the saw.
  
[List of Patents for class 76 subclass 59]    59Rotary set
 This subclass is indented under subclass 58.  Machines in which the teeth of the saw are given set by means of a rotary set--as, for example, toothed or corrugated rolls or disks.
  
[List of Patents for class 76 subclass 60]    60Screw-operated set:
 This subclass is indented under subclass 58.  Machines in which the tooth-setting devices are forced into engagement with the teeth by means of a screw.
  
[List of Patents for class 76 subclass 61]    61Multiple:
 Instruments having pivotally-mounted sets adapted to act upon a plurality of teeth simultaneously. They are usually for simultaneously bending adjacent teeth in opposite directions.

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66,
  
[List of Patents for class 76 subclass 62]    62Trip:
 Machines in which the set or punch is carried by a pivoted arm, usually spring-actuated, and adapted to be operated by a trip dog or cam.

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15,and 67.
  
[List of Patents for class 76 subclass 63]    63Lever-operated:
 Machines in which the set or punch is carried by a lever-operated pivoted arm and is adapted to bend the tooth against a properly formed anvil.

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52,and 68.
  
[List of Patents for class 76 subclass 64]    64Pliers:
 This subclass is indented under subclass 63.  Hand implements in the form of pliers in which the set or punch is carried by a pivoted arm which is actuated by one of the plier-handles.

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69,
  
[List of Patents for class 76 subclass 65]    65Idle:
 Machines in which a set or punch carried upon a pivoted arm is adapted to be struck by a hammer to give set to a tooth held upon a properly formed anvil.

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55,and 70.
  
[List of Patents for class 76 subclass 66]    66Multiple:
 Machines and implements having slidably-mounted sets adapted to act upon a plurality of teeth simultaneously. These devices are usually for simultaneously bending adjacent teeth in opposite directions.

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61,
  
[List of Patents for class 76 subclass 67]    67Trip:
 Machines in which a slidably mounted set, usually spring-actuated, is operated by a trip dog or cam.

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62,
  
[List of Patents for class 76 subclass 68]    68Lever-operated:
 Machines in which a set slidably supported is operated by a lever or a cam-lever to bend the tooth against a suitably formed anvil.

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63,
  
[List of Patents for class 76 subclass 69]    69Pliers:
 This subclass is indented under subclass 68.  Hand implements in the form of pliers in which a slidably-mounted set is actuated by one of the pivoted handles.

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64,
  
[List of Patents for class 76 subclass 70]    70Idle:
 Machines in which a set slidably supported, usually by means of a spring, is adapted to be struck by a hammer to give set to a tooth held upon a suitably formed anvil.

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55,and 65.
  
[List of Patents for class 76 subclass 71]    71Spring set:
 This subclass is indented under subclass 58.  Machines and implements having means for engaging or embracing the tooth, the lateral (or oscillating) movement of the device serving to bend the tooth to the proper set without the cooperation of an anvil.
  
[List of Patents for class 76 subclass 72]    72Swage set:
 This subclass is indented under subclass 58.  Machines and implements in which the tooth is bent by means of a wedge-shaped punch or swaging device.
  
[List of Patents for class 76 subclass 73]    73Anvil set:
 This subclass is indented under subclass 58.  Bevel-faced anvils upon which the saw is laid and the teeth bent to conform to the beveled face of the anvil by being struck by a manually-operated hammer.

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57,
  
[List of Patents for class 76 subclass 74]    74Guides:
 This subclass is indented under subclass 25.1.  Devices adapted to support and guide saws to sharpening, dressing, or setting mechanisms. These guides are usually used to support band saws.

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83, Cutting,   subclasses 719+ for tool guides.
269, Work Holders,   appropriate subclasses. Class 269 is the residual locus for patents to a device for clamping, supporting and/or holding an article (or articles) in position to be operated on or treated. See notes thereunder for other related loci.
  
[List of Patents for class 76 subclass 75]    75Feeding:
 This subclass is indented under subclass 25.1.  Mechanisms adapted to feed the saw-blank or saw to mechanisms for operating upon the same, not classifiable in the following subclasses.

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226, Advancing Material of Indeterminate Length,   appropriate subclasses for methods of, and apparatus for, feeding material without utilizing the leading or trailing ends to effect movement of the material.
  
[List of Patents for class 76 subclass 76]    76Clamp feed:
 This subclass is indented under subclass 75.  Mechanisms for feeding a clamp which holds the saw or saw-blank to the devices which operate upon the saw blade or teeth.

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22,and 34.
  
[List of Patents for class 76 subclass 77]    77Tooth-engaging feed:
 This subclass is indented under subclass 75.  Mechanisms for feeding the saw to the devices which operate upon the saw handle or teeth, which comprise a reciprocating pawl or other means for engaging successive teeth of the saw to feed the saw forward.

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35,
  
[List of Patents for class 76 subclass 78.1]    78.1Clamp:
 This subclass is indented under subclass 25.1.  Apparatus comprising structure for gripping a saw blank or blade.

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144, Woodworking,   subclasses 273.1+ , for a miscellaneous clamp or clamping device used in woodworking.
269, Work Holders,   for a device of general utility to clamp or otherwise immobilize a workpiece being modified or treated.
  
[List of Patents for class 76 subclass 79]    79Center supports:
 This subclass is indented under subclass 78.1.  Clamps and vises for holding circular saws during their manufacture or while being sharpened. Includes, mainly, clamps applied to the center of the saw, but also includes other forms of clamps having special attachments for centering the saw.
  
[List of Patents for class 76 subclass 79.5]    79.5Vice:
 This subclass is indented under subclass 78.1.  Apparatus including a structure for immobilizing a saw blank or blade.

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29, Metal Working,   subclasses 423+ for a process of assembling, generally: particularly subclass 559 for a method of holding work not provided for elsewhere.
269, Work Holders,   for a device for holding a workpiece being modified, generally. Class 269 is the residual locus of device for holding material while that material is modified.
  
[List of Patents for class 76 subclass 80]    80Tooth-inserters:
 This subclass is indented under subclass 25.1.  Tools especially adapted for inserting and extracting saw-teeth.
  
[List of Patents for class 76 subclass 80.5]    80.5Chain saw sharpener:
 This subclass is indented under subclass 25.1.  Apparatus for making the cutting edge of a tooth element of a better shape for cutting, wherein the tooth is one of a series pivotally connected together to follow one another in cutting.
  
[List of Patents for class 76 subclass 81]    81Stropping devices:
 Miscellaneous devices and machines having a fibrous (i.e., leather, cloth, wood, etc.) working surface for sharpening razor blades and similar cutlery by application of the work thereto.

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30, Cutlery,   subclasses 35+ when razor features, such as means for securing the blade in operative relation to a gauge or guard that protects the skin from cuts, are claimed.
428, Stock Material or Miscellaneous Articles,   subclass 473 for a plural layer web or sheet including a leather layer and adapted for use as a strop, and subclass 904 (a cross-reference art collection) for an artificial leather product or stock material.
451, Abrading,   subclasses 169 , 316, and 318 for a stropping machine; subclasses 461+ and 526+ for a sharpener having a stropping surface and an abrading surface; subclass 459 for a strop renewing device; and subclasses 490+ for an abrasive surface adapted to sharpen a tool.
  
[List of Patents for class 76 subclass 81.1]    81.1Under tension:
 This subclass is indented under subclass 81.  Device provided with means for putting the working surface under the proper or desired tautness.

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451, Abrading,   subclasses 490+ for an abrasive sheet holder with means to tension the sheet thereon.
  
[List of Patents for class 76 subclass 81.2]    81.2By threaded means:
 This subclass is indented under subclass 81.1.  Device wherein the tensioning means includes a helical screw operator.
  
[List of Patents for class 76 subclass 81.3]    81.3Including self-storage or kit:
 This subclass is indented under subclass 81.  Device wherein the sharpening device is wound, folded or otherwise reduced in overall dimension for storage purposes and/or stored in a receptacle provided therefor.

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132, Toilet,   subclass 292 for toiletry kits including a strop.
  
[List of Patents for class 76 subclass 81.4]    81.4Strop biased for retraction:
 This subclass is indented under subclass 81.3.  Device wherein storage is caused by a means which urges the strop to its position of confinement within the receptacle, such as a spring-actuated reel or a counter-weight.

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242, Winding, Tensioning, or Guiding,   subclasses 371+ for a spring power reeling device and subclasses 390+ for other motor powered reeling devices used to wind and unwind elongated material.
  
[List of Patents for class 76 subclass 81.5]    81.5With end-attaching means:
 This subclass is indented under subclass 81.  Device wherein the sharpening device is provided with means on one extreme for the purpose of suspension (i.e., hook, eye, etc.).

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248, Supports,   subclasses 317+ and more specifically 339+.
  
[List of Patents for class 76 subclass 81.6]    81.6Including swivel:
 This subclass is indented under subclass 81.5.  Device wherein the suspension means constitutes or comprises a swivel connection.
  
[List of Patents for class 76 subclass 81.7]    81.7Rotary or oscillating:
 This subclass is indented under subclass 81.  Device wherein said working surface is disclosed as following an arcuate or closed curved path during the sharpening operation.
  
[List of Patents for class 76 subclass 81.8]    81.8Including nonplanar working surface:
 This subclass is indented under subclass 81.  Device wherein the working surface of the sharpening device is maintained in a condition other than flat.

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81.1,through 81.7, for other stropping devices having a nonplanar working surface.
  
[List of Patents for class 76 subclass 82]    82Cutting:
 Miscellaneous devices and machines for sharpening cutters by removing the material of the cutter adjacent to the edge by cutting, filing, or chipping, as distinguished from abrading or swaging. There are a few patents for scissors-sharpeners, the action of which is somewhat analogous to swaging sharpeners.
(1) Note. See this class, subclass 82.2.

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29, Metal Working,   subclasses 76.1+ for machines and processes for filing metal, which may be defined as cutting metal by a hard instrument having its surface or surfaces sharply ridged.
451, Abrading,   for a method of or apparatus for sharpening a cutter by grinding.
  
[List of Patents for class 76 subclass 82.1]    82.1Lawn mower:
 This subclass is indented under subclass 82.  Devices especially adapted to sharpen lawn mowers.

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56, Harvesters,   subclass 250 for rotating cutting reel mower organizations modified to facilitate sharpening.
451, Abrading,   subclasses 419+ for an abrading device adapted to be attached to a cutting machine, such as a lawn mower, to sharpen the blade thereof.
  
[List of Patents for class 76 subclass 82.2]    82.2Scissors:
 This subclass is indented under subclass 82.  Devices especially adapted to sharpen scissors.

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451, Abrading,   especially subclass 45 for a method of abrading to sharpening scissors.
  
[List of Patents for class 76 subclass 83]    83Skate:
 This subclass is indented under subclass 82.  Devices especially adapted to sharpen skates.
  
[List of Patents for class 76 subclass 84]    84Butchers" steels:
 This subclass is indented under subclass 82.  The title is self-explanatory.

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51, Abrasive Tool Making Process, Material, or Composition,   subclass 309 for making an abrasive tool of metal.
428, Stock Material or Miscellaneous Articles,   subclass 684 for a metallic composite in which a component has a steel base.
451, Abrading,   subclass 553 for an abrading tool comprising a metal rotary cylinder that turns about a stationary axis.
  
[List of Patents for class 76 subclass 85]    85Rotary:
 This subclass is indented under subclass 82.  Disk-sharpening devices, including cutting or filing tools adapted to be rotated about the disk or against which the disk is rotated. This subclass comprises, mainly, devices for sharpening harrow disks.
(1) Note. See this class, subclass 89.2 for devices for sharpening harrow disks, etc., by swaging by rolls or otherwise.

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172, Earth Working,   subclass 437 for earth working apparatus comprising the combination of an earth working disk and means to sharpen it.
451, Abrading,   especially subclasses 321+ for a device for sharpening a disc by grinding.
  
[List of Patents for class 76 subclass 86]    86Converging:
 Devices comprising a plurality of converging cutting or filing blades, the article to be sharpened being passed between them, thereby having stock removed from both sides of the blade adjacent to the edge thereof.

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451, Abrading,   subclasses 490+ for a tool support for a flexible-member abrading tool.
  
[List of Patents for class 76 subclass 87]    87Disks:
 This subclass is indented under subclass 86.  Devices comprising a plurality of cutting disks or files, such disks being arranged in such a manner that the circumferences of the disks are tangent to the same line or overlap one another.

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451, Abrading,   subclasses 364+ for a work holder for use with abrading device.
  
[List of Patents for class 76 subclass 88]    88Cutter and guide:
 This subclass is indented under subclass 82.  Devices for sharpening cutters comprising an edged blade or a file against which the article to be sharpened is directed by means of a guide usually angularly disposed relative to the blade.
(1) Note. See this class, subclass 82.2.

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451, Abrading,   subclasses 364+ for a work holder for use with abrading device.
  
[List of Patents for class 76 subclass 89]    89Disk:
 This subclass is indented under subclass 88.  Devices for sharpening cutters in which the article to be sharpened is directed against a disk cutter or file by means of a guide.

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451, Abrading,   subclasses 364+ for a work holder for use with abrading device.
  
[List of Patents for class 76 subclass 89.1]    89.1Edge-serrating:
 Machines, devices and processes for serrating the metal adjacent to the edges of cutters, the serrations extending in most instances across the beveled portion of the blade and obliquely to the edge.
  
[List of Patents for class 76 subclass 89.2]    89.2Swaging:
 Machines and devices for sharpening metal tools by forging or rolling the metal adjacent to the edge.

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492, Roll or Roller,   for a roll, per se, not elsewhere provided for, and see the notes thereunder.
  
[List of Patents for class 76 subclass 101.1]    101.1BLANK OR PROCESS:
 This subclass is indented under the class definition.  Invention comprising stock material having some of the physical characteristics of a desired tool; or comprising a method of modifying such stock material to make it into a desired tool.
(1) Note. Included herein is a blank for, or process of making a work holder, if not provided for elsewhere.

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29, Metal Working,   subclasses 428+ for a process of assembling and joining, generally; particularly subclass 559 for a method of holding work not provided for elsewhere.
72, Metal Deforming,   for shaping metal, generally (which may be combined with cutting). The operation of Class 72 may prepare a tool blank, but is not restricted an operation of converting such a blank into a tool.
156, Adhesive Bonding and Miscellaneous Chemical Manufacture,   subclasses 1+ for a process of making a product by laminating, not restricted to tool making.
228, Metal Fusion Bonding,   subclasses 101+ for a process generally, which may include tool making, including only such step or steps as is necessary for the formation of a single joint by soldering, brazing, or welding.
269, Work Holders,   for a device for holding a workpiece being modified, generally. Class 269 is the residual locus of a device for holding material while that material is modified.
409, Gear Cutting, Milling or Planing,   subclasses 66+ for process of milling a thread or helix into a workpiece (as in forming a drill bit blank, a thread cutting tap, or a thread cutting die).
419, Powder Metallurgy Processes,   for a method of making a blank of general utility from metal or alloy powders by sintering, especially subclasses 10+ for such a method performed upon a composition which is particularly suited for use as a die, drill, or cutting tool, in general.
428, Stock Material or Miscellaneous Articles,   subclasses 544+ for stock material, generally, e.g., for indefinite length stock material of metal or having a metallic component; especially subclass 599 for metallic stock having both thickness and nonthickness surfaces of defined configuration, and subclass 602 for metallic stock material whose symmetrical shape varies in thickness longitudinally.
451, Abrading,   subclasses 28+ for a method of finishing a tool by abrading.
  
[List of Patents for class 76 subclass 102]    102Augers:
 This subclass is indented under subclass 101.1.  Processes for forming auger bits, also blanks especially adapted to be made into augers.

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175, Boring or Penetrating the Earth,   subclasses 374+ and 425+ for an earth boring tool made of a specific material.
  
[List of Patents for class 76 subclass 103]    103Axes, hammers and hatchets:
 This subclass is indented under subclass 101.1.  Processes for making the heads of axes, adzes, hammers, and hatchets (mainly wood-working-tools), also blanks specially adapted to be made into such tools.
  
[List of Patents for class 76 subclass 104.1]    104.1Cutlery:
 This subclass is indented under subclass 101.1.  Blank or process comprising stock material for, or a method of making an article commonly known as "cutlery".
(1) Note. "Cutlery" includes a knife, scissors, hand shears, a fork or a spoon.
  
[List of Patents for class 76 subclass 105]    105Forks and spoons:
 This subclass is indented under subclass 104.1.  Processes for making metallic table forks and spoons, also patents upon blanks specially adapted to be made into such articles.

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111,for processes for making metallic forks for heavy work.
  
[List of Patents for class 76 subclass 106]    106Hollow handles:
 This subclass is indented under subclass 104.1.  Processes for making hollow handles of articles of cutlery, also making articles of cutlery having hollow handles, also blanks specially adapted to be formed into such articles.
  
[List of Patents for class 76 subclass 106.5]    106.5Hand shears:
 This subclass is indented under subclass 104.1.  Blank or process comprising stock material for, or a method of, making a cutting device intended to be manually supported during operation, which device includes a pair of cutting blades that move adjacent to and past each other to sever a workpiece therebetween by a shearing action.
(1) Note. A pair of scissors is included in this subclass.
  
[List of Patents for class 76 subclass 107.1]    107.1Die:
 This subclass is indented under subclass 101.1.  Blank or process comprising stock material for, or method of, making an instrumentality for engaging a workpiece and directly performing work thereon.
(1) Note. "Die" includes a tool of a metal-forging machine, a metal shaping machine, stencil punching machine, metal shaping machine, stencil punching machine, metal-ornamenting machine, etc.
  
[List of Patents for class 76 subclass 107.4]    107.4Drawing die:
 This subclass is indented under subclass 107.1.  Blank or process comprising stock material for, or method of, making a tool having an aperture through which work is pulled to treat that work.
  
[List of Patents for class 76 subclass 107.6]    107.6Spinnerette:
 This subclass is indented under subclass 107.1.  Blank or process comprising stock material for, or method of, making a tool having relatively small, apertures through which flowable material is extruded to form strands of product.
  
[List of Patents for class 76 subclass 107.8]    107.8Steel rule die:
 This subclass is indented under subclass 107.1.  Blank or process comprising stock material for, or method of, making a tool having a cutting edge extending along a first plane and having a force receiving edge extending along a second plane that is parallel with the first plane, said tool being made of a strip of sheet metal with the cutting edge at one edge, the force receiving edge at an opposing edge wherein the sheet like dimension of the tool extends normally to the first and second plane.
(1) Note. The die made from the blank of this subclass or by the method of this subclass may be used in a "clicker die" press and is similar in structure to some cookie cutters.
  
[List of Patents for class 76 subclass 108.1]    108.1Drill:
 This subclass is indented under subclass 107.1.  Invention comprising stock material for, or method of, making a tool intended to turn about an axis and cut a workpiece by relative rotation and relative axial movement therewith.
(1) Note. Including herein the making of a metal cutting, wood cutting, or stone cutting drill.

SEE OR SEARCH CLASS:

175, Boring or Penetrating the Earth,   subclasses 374+ and 425+ for an earth boring bit made of specific material.
409, Gear Cutting, Milling or Planing,   subclass 66 , for a process of milling a thread or helix on a workpiece, such as in making a drill bit, wherein the operation is not restricted to making of a tool.
451, Abrading,   subclass 48 for a process of abrading a drill, including forming a drill bit by abrading only.
  
[List of Patents for class 76 subclass 108.2]    108.2Rock drill:
 This subclass is indented under subclass 108.1.  Invention comprising stock material for, or a method of, making a drill capable of cutting stone.
  
[List of Patents for class 76 subclass 108.4]    108.4Well drill:
 This subclass is indented under subclass 108.1.  Invention comprising a stock material for, or method of making a drill intended to penetrate the earth to access fluid therein.
  
[List of Patents for class 76 subclass 108.6]    108.6Twist drill:
 This subclass is indented under subclass 108.1.  Invention comprising stock material for, or a method of, making a drill having a solid center and a helically spiralled marginal extent revolved thereabout, and having a radially extending web that continuously connect the solid center and the helically spiraled marginal extent.
  
[List of Patents for class 76 subclass 109]    109Hoes, mattocks and picks:
 This subclass is indented under subclass 101.1.  Processes for making hoes, mattock, grub-hoes, or other hand-digging tools adapted to strike blows.
  
[List of Patents for class 76 subclass 110]    110Keys:
 This subclass is indented under subclass 101.1.  Processes for making hand-operated lock keys, also patents upon blanks for making keys.
(1) Note. It does not include processes for making watch keys, which are to be found in this class, subclass 114, nor does it include processes for making keys for holding pinions on shafts, etc.
  
[List of Patents for class 76 subclass 111]    111Pitchforks and rakes:
 This subclass is indented under subclass 101.1.  Processes for making metallic tools having teeth or tines to be used for heavy work, comprising pitchforks, manure-forks, garden-rakes, potato-rakes, etc., also blanks specially adapted to be made into such articles.
  
[List of Patents for class 76 subclass 112]    112Saws:
 This subclass is indented under subclass 101.1.  Processes for making saws, including forming saw-teeth, sharpening, gumming, stretching, and setting and patching saws etc., also blanks for saw-blades, patches for cracked blades, etc.
  
[List of Patents for class 76 subclass 113]    113Shovels:
 This subclass is indented under subclass 101.1.  Processes for making shovels, spades, scoops, etc., also blanks specially adapted to be made into such articles.
  
[List of Patents for class 76 subclass 114]    114Wrenches:
 This subclass is indented under subclass 101.1.  Processes for making wrenches, including watch and clock keys, also blanks specially adapted to be made into such articles.
  
[List of Patents for class 76 subclass 115]    115Rotary cutter:
 This subclass is indented under subclass 101.1.  Invention comprising stock material for, or a method of, making a work engaging member having a sharp cutting edge, which member is of generally circular configuration about a center axis, and is intended to turn about that axis to cut a workpiece.
  
[List of Patents for class 76 subclass 116]    116Cutter of sheet metal:
 This subclass is indented under subclass 101.1.  Invention comprising stock material for, or a method of, making a work cutting member of relatively thin metallic material.
  
[List of Patents for class 76 subclass 117]    117Involving use of tap or die:
 This subclass is indented under subclass 101.1.  Invention including utilization of a threaded member to cut or impress a helical shape on the outer surface of a rod-like blank, or on the inner surface of a pipe-like blank.
  
[List of Patents for class 76 subclass 118]    118Scythe:
 This subclass is indented under subclass 101.1.  Invention comprising stock material for, or a method of, making a tool having a sharp cutting blade intended to be manually supported in the hands of an operative and manipulated to swing just above the ground with the cutting edge generally parallel to the ground to sever grass or other small stem plants growing therefrom.
  
[List of Patents for class 76 subclass 119]    119Hand tool:
 This subclass is indented under subclass 101.1.  Invention comprising stock material for, or a method of, making a tool intended, when in use, to be supported by hand or hands of an operative.
  
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