Key duplicating machine

Details Key duplicating machine Key duplicating machine

1976-11-17

1978-06-06

Whitehead, Harold D.

Abrasive tool making process, material, or composition

With carbohydrate or reaction product thereof

29 76C, 90 1305, B24B 1702, B21K 1300

Patent

active

040928063

ABSTRACT:
A key duplicating machine is provided comprising a rotatable grinding wheel having a cutting edge and a guide member having a reference edge. The guide member is disposed with its reference edge at a fixed distance from the cutting edge of the grinding wheel. A shaft having its axis disposed parallel to the axis of the grinding wheel is supported on linear bearings. A Y-shaped keyholder provides two angular arms with a key blank held on one and an existing key held on the other. The keyholder is attached to the shaft and disposed with its existing key biased to bear against the reference edge of the guide member and with its key blank adjacent the cutting edge of the grinding wheel. Thus, as the shaft is axially moved in its linear bearings, the keyholder is rocked about the shaft axis in accordance with the notches on the existing key to thereby move the key blank laterally into the grinding wheel to remove material therefrom.

REFERENCES:
patent: 1462150 (1923-07-01), Segal
patent: 1752668 (1930-04-01), Johnson
patent: 1866034 (1932-07-01), Hansen
patent: 2167008 (1939-07-01), Shepse
patent: 3902382 (1975-09-01), Lieptz

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