Device for testing the section of a flat key

Details Device for testing the section of a flat key Device for testing the section of a flat key

1979-04-10

1980-11-18

Stearns, Richard R.

Geometrical instruments

Area integrators

Electrical

33175, G01B 520

Patent

active

042337461

ABSTRACT:
A device for testing or checking the section of a flat key comprising a base plate, a plurality of laminations, each of which is formed of a pair of half-laminations which are slidably mounted with respect to one another in their common plane towards one another so that their respective juxtaposed edges may meet with one another and away from one another to allow insertion of a flat key or a blank of a flat key to be tested. The half laminations are held in place by a pressure applying device once they have reached a position which corresponds to the desired cross-sectional profile of the flat key.

REFERENCES:
patent: 341572 (1886-05-01), Hand
patent: 874091 (1907-12-01), Levncke
patent: 1665721 (1928-04-01), Stockton
patent: 1826783 (1931-10-01), Hess

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