Key duplicator

Details Key duplicator Key duplicator

1977-12-20

1979-02-20

Culver, Horace M.

B23C 116

Patent

active

041400437

ABSTRACT:
A machine for the duplication of keys comprises a frame on which a carriage, supporting juxtaposed clamps for a sample key and a blank, is swingable about a horizontal guide bar and slidable along the latter. The clamps are held on a common support which is pivotable on the carriage about an axis parallel to the guide bar to facilitate the cutting of convex or laterally slanting lands in a key bit. Two uprights on the frame carry a cutting wheel, rotating on a shaft parallel to the guide bar, and a feeler engageable with the sample key, the feeler having the shape of a vertical blade with a convex key-contacting edge whose radius of curvature equals that of the cutting wheel. The feeler may be spring-urged toward the clamp support and repressible by its contact with the sample key into registry with the cutter periphery.

REFERENCES:
patent: 1335351 (1920-03-01), Segal
patent: 2682809 (1954-07-01), May

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