Thumb-controlled hand-held tool

Winding – tensioning – or guiding – Coil holder or support – Spool or core

Patent

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Details

140124, 173169, D 8 68, B21F 304

Patent

active

043300936

ABSTRACT:
In the wire-wrapping of terminals which extend from a terminal block, an operator uses a hand tool which includes a housing having a bit that wraps a wire-like conductor about each terminal, and a handle which allows the tool to be held in a modified prehensile manner. The handle is configured to include a laterally disposed thumb rest which is effective to support the thumb in a relaxed position. The surface of the rest which supports the thumb includes a port which is covered and uncovered repetitively by relatively slight movements of portions of the thumb to control the operation of a fluidic circuit to turn the bit and cause the conductor to be about the terminal. This arrangement results in a substantial reduction in the movement of particular joints of the thumb and of particular muscles which control the movement of the thumb so that worker fatigue is substantially reduced.

REFERENCES:
patent: 3656218 (1972-04-01), Staiger
patent: 3949944 (1976-04-01), Bent
Western Electric Technical Digest, Issue 30, Western Electric Co. Inc., Apr. 1973, p. 19.
"The Human Factor", WE Magazine, Feb.-Mar., 1976, p. 24

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