US PATENT SUBCLASS 83 / 202
TOOL ENGAGES WORK DURING DWELL OF INTERMITTENT WORKFEED

Current as of: June, 1999
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83 /   HD   CUTTING

202TOOL ENGAGES WORK DURING DWELL OF INTERMITTENT WORKFEED {40}
203  DF  .~> Unicyclic {2}
206  DF  .~> With work-moving clamp jaw
207  DF  .~> Work moved solely by movable abutment
208  DF  .~> Operation initiated by work-driven detector means to measure work length
209  DF  .~> Work-sensing means to control work-moving or work-stopping means {1}
211  DF  .~> Work-sensing means to initiate tool feed {1}
212.1  DF  .~> Plural tools at same station, one positioned for continuous engagement with work
213  DF  .~> Plural tools successively actuated at same station {1}
215  DF  .~> Tool has motion additional to cutting stroke during tool cycle {2}
219  DF  .~> With variable direction of work-feed from cycle to cycle {1}
221  DF  .~> Interlock between tool actuating and work feed means
222  DF  .~> Tool motion initiates work feed and vice versa
223  DF  .~> Stored energy means for moving work or tool, loaded by tool or work {1}
225  DF  .~> Work feed means controlled by means mounted on tool or tool support {2}
231  DF  .~> Work-feed mechanism in nonfeed motion effects or initiates tool actuation {1}
234  DF  .~> With means to vary number of work-feed increments between tool strokes
235  DF  .~> Dwell caused by imposing reverse motion on portion of flexible moving work
236  DF  .~> With uninterrupted flow of work from supply source
237  DF  .~> Work feed increment shorter than longitudinal tool field
238  DF  .~> Unequal work feed increments in recurring series {1}
240  DF  .~> Means to change tool position, or length or datum position of work- or tool-feed increment {2}
249  DF  .~> With means to facilitate manual repositioning (shift) of work
250  DF  .~> With means to produce plurality of work-feed increments per tool cycle {1}
255  DF  .~> Work fed successively to plural tools {1}
257  DF  .~> Work advance occurs during return stroke of tool
258  DF  .~> Dwell defined only by "dead-center" of rotating crank
259  DF  .~> Dwell initiated by disengagement of surface of moving frictional feed means from work {2}
262  DF  .~> Dwell caused by clamping or blocking work during continuous operation of feed means
263  DF  .~> With means to control magnitude of work-feed increment or work acceleration {2}
266  DF  .~> Work feed functions as tool support
267  DF  .~> With rotary work-carrier
268  DF  .~> With abutment to position work being fed with respect to cutter {1}
270  DF  .~> Work guide and feed means have open side
271  DF  .~> Work feed means modified to maintain clearance from tool
272  DF  .~> Plurality of work feed means in separate paths
273  DF  .~> Intermittent drive type of gearing for work-feed means {2}
276  DF  .~> Work-feed element contacts and moves with work {2}
279  DF  .~> With means to guide, position, or present work to work-feed means {1}
282  DF  .~> With means to clamp work during dwell
283  DF  .~> One-revolution clutch in tool drive

DEFINITION

Classification: 83/202

(under the class definition) An apparatus including means to sequentially stop and move, or stop and permit movement of, the work at the tool zone; and including tool actuating means which synchronously brings the tool into cutting contact with the work while the latter is at rest or simultaneously with the stopping of the work.

(1) Note. The work may be brought to a halt by a device such as a clamp jaw or an abutment stop effective to halt that portion of the work in the tool zone while work-feed means continually urges another portion toward the tool with

consequent buckling or slippage, (see subclass 262 indented hereunder).

(2) Note. The work may be moved simply by gravity, no work advancing mechanism being provided, (see subclass 268 indented hereunder).

(3) Note. A portion of the work remote from the tool zone may be continuously in motion as, for example, work unwinding from a continuously rotating supply roll.

SEE OR SEARCH THIS CLASS, SUBCLASS:

350+, for a device wherein the work is fed constantly to a tool zone where it is intermittently acted on by an actuated tool having no component of motion in the direction of work-feed, and where no provision is made for halting the work before it is engaged by the tool. SEE OR SEARCH CLASS

28, Textiles: Manufacture,

107+, for needle felting machines having cycle of intermittent work moving and needing.

112, Sewing, appropriate subclasses, for machines which advance work to sewing station and hold it stationary while it is being pierced by the needle.

198, Conveyors: Power-Driven,

339.1, for a conveyor that dwells at a work station, and subclasses 858+ for a conveyor having indexed or intermittent drive means.

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, particularly

120+, for structure for advancing material intermittently.

234, Selective Cutting (e.g., Punching), appropriate subclasses, for a selective cutting device (usually termed a card or tape punch) of the step-by-step type.

408, Cutting by Use of Rotating Axially Moving Tool,

70+, for means to cut in the manner of that class during the dwell of intermittent workfeed.