Key holding tool for impressioning

Details Key holding tool for impressioning Key holding tool for impressioning

1989-05-08

1991-10-22

Schmidt, Frederick R.

Tools

Hand held holder or having clamp

81418, 811774, 81438, B25H 300

Patent

active

050584650

ABSTRACT:
A device for holding a lock key firmly while inserting the key in a lock on a building, automobile, filing cabinet or other. The purpose of the tool is to impart torque simultaneous with a rocking motion to the key. This causes marks to be made on the key by the lock pins or wafers and shows the locksmith where to file the key to make it open the lock. This procedure is well known to those in the locksmith's trade, and is called impressioning.

REFERENCES:
patent: 855280 (1907-05-01), Campbell
patent: 1427668 (1922-08-01), Williams
patent: 1935748 (1933-11-01), Roff
patent: 4384499 (1983-05-01), Shockley
patent: 4815346 (1989-03-01), Littlehorn

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