US PATENT SUBCLASS 81 / 158
.~.~.~.~ Traveling screw, shank rack

Current as of: June, 1999
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81 /   HD   TOOLS

52  DF  WRENCH, SCREWDRIVER, OR DRIVER THEREFOR {27}
129  DF  .~ Slidable jaw adjustments {3}
155  DF  .~.~ Thread {10}
157  DF  .~.~.~ Displaceable nut or screw {1}
158.~.~.~.~ Traveling screw, shank rack

DEFINITION

Classification: 81/158

The screw is carried by the traveling jaw and is moved away from its cooperating member which is a rack on the shank, to provide a quick adjustment.

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36, and 176.