Machine element or mechanism – Control lever and linkage systems – Hand operated
Patent
1979-05-29
1981-01-13
Herrmann, Allan D.
Machine element or mechanism
Control lever and linkage systems
Hand operated
74527, 403 96, B62D 118, G05G 506
Patent
active
042442362
ABSTRACT:
A tilt steering column mechanism having two brackets, one of which is connected to a cab frame member and the other of which is connected to a steering column and is slideable within the first bracket upon tilting or pivoting of the steering column about a point remote from the second bracket. The first bracket carries a slideable lock bolt, which is spring-biased in one axial direction, and has a raised frusto-conical portion thereon which cooperates with any one of a number of uniformly spaced frusto-conical receptacles provided in the second bracket. A handle, pivotally mounted to the first bracket, causes the sliding of the lock bolt through the intermediary of a toggle link, which in the dead center position, together with the bias of the spring, holds the frusto-conical portion in the selected frusto-conical receptacle. The steering column is pivoted to predetermined points, corresponding to the frusto-conical receptacle spacing, about a horizontal axis, upon breaking the dead center by locking position of the toggle link by swinging the handle about its pivotal axis and off-setting the handle connected end of the toggle link, thereby causing the lock bolt connected end of the toggle link to move and slide the lock bolt against the bias of the spring and unseat the frusto-conical portions from their respective frusto-conical receptacles.
REFERENCES:
patent: 1367695 (1921-02-01), Gray
patent: 2185779 (1940-01-01), Tveidt
patent: 3533302 (1970-10-01), Hansen
patent: 3724290 (1973-04-01), Burton
patent: 3803939 (1974-04-01), Schenten
AuBuchon F. David
Herrmann Allan D.
International Harvester Company
Krubel Frederick J.
Parks Raymond E.
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