US PATENT SUBCLASS 74 / 813 R
ROTARY MEMBER OR SHAFT INDEXING, E.G., TOOL OR WORK TURRET

Current as of: June, 1999
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74 /   HD   MACHINE ELEMENT OR MECHANISM

813 RROTARY MEMBER OR SHAFT INDEXING, E.G., TOOL OR WORK TURRET {8}
814  DF  .~> With safety device or drive disconnect
815  DF  .~> With locating point adjusting
816  DF  .~> Preselected indexed position {1}
825  DF  .~> Plural operators or input drives
826  DF  .~> With means to axially shift shaft
827  DF  .~> Single revolution input effects desired fractional output
813 C  DF  .~> Control means
813 L  DF  .~> Locking means

Unofficial Alpha Subclasses: R C L

DEFINITION

Classification: 74/813

(under the class definition) Assemblies having (1) means for applying torque to a shaft or other rotatably mounted device to turn the shaft or other device about its axis to one or more selected loci, and (2) means to prevent or hold against

rotation in at least one direction at such loci.

(1) Note. EXPLANATORY NOTE: This and indented subclasses represents an initial step toward gathering together the "indexing" or "turret" art hitherto distributed on the basis of the disclosed associated operations. Pertinent subclasses from Classes 29 and 90 have been screened to provide the necessary art for initial classification. Integration with the preceding subclasses (10+) of this class (74), now limited to electronic tuning shafts, is contemplated in the future. Similarly, as other appropriate bodies of art are screened, such art as meets the above definition will be classified here and so noted below as well as in the Notes to said bodies of art.

(2) Note. The Notes under subclass 10 of this class (74) must be studied for both the line with other classes and for fields of search inasmuch as they apply with equal force to this and indented subclasses.

(2) Note. Where, in addition to means for applying torque and means for preventing rotation, the turret structure to hold either work or tool is recited in the claims the art is deemed to go beyond the scope of this and indented subclasses (813+).

(4) Note. The term "turret", per se, is considered equivalent to "rotatably mounted device". Included in this and indented subclasses (813+) are assemblies wherein a rotatably mounted device or "turret" is recited as a named load on a shaft. The inclusion of tool or work holding means on said load is sufficient to bar classification here (813+) and such combinations are classified on the basis of associated operations. For example; "a tool holding turret" is properly classified here, while "a turret with tool holding means" or "a turret with screw means to hold a work piece is not.

SEE OR SEARCH THIS CLASS, SUBCLASS: 10+, for assemblies particularly adapted for mechanically rotating one or more shafts of electronic tuning devices into desired angular positions.

SEE OR SEARCH CLASS

29, Metal Working,

35.5+, inclusive, for turrets including means to hold either the work or tool, and see (3) Note above.

33, Geometrical Instruments,

19, for means for scribbing scale divisions on dials and the like, and subclasses 568+ for gages used to establish desired angular position. Devices including mere indicia means rather than means to prevent or hold against rotation are classified

in Class 33 as are indicia devices which do not include means for applying torque.

40, Card, Picture, or Sign Exhibiting,

112, and various subclasses under subclass 446 for clutch take-up devices.

100, Presses,

223, for reciprocating presses including rotary indexing material supports and see the search notes thereunder.

188, Brakes, 68, for combined friction and positive locks, subclass 69 for positive locks, per se, and subclasses 70-79.5 for friction locks.

279, Chucks or Sockets,

5, for angularly adjustable or indexing devices of the chuck or socket type.

408, Cutting by Use of Rotating Axially Moving Tool,

35, for a multiple drill spindle turret, and subclasses 71 and 89+, for indexing work positioners used in conjunction with drilling and boring machines.

409, Gear Cutting, Milling, or Planing,

221+, for a position index device including means to hold the work or tool, and see (3) Note above.

451, Abrading, especially

149, 247+, and 292 for a turret-type work positioner.