Blind lever arm adjustment device

Details Blind lever arm adjustment device Blind lever arm adjustment device

1991-10-21

1993-05-11

Herrmann, Allan D.

Machine element or mechanism

Mechanical movements

Reciprocating or oscillating to or from alternating rotary

474101, 474133, 271117, 271124, 271273, B65H 352

Patent

active

052091333

ABSTRACT:
An adjustment device for adjusting a lever arm located inside a machine frame wherein the lever arm is pivotally mounted to the frame at a first location and is spring biased against a stop at a second location of the frame. The device comprises a resilient sleeve having a shank portion adapted to extend through an aperture in the frame to act as the stop, and a head portion of larger diameter then the diameter of the aperture in the frame. The shank portion has a threaded section and a non-threaded section, the non-threaded section having a length greater than the frame thickness at the aperture, wherein the lever arm pivots as a screw extending axially through the sleeve is turned in the threaded section.

REFERENCES:
patent: 2277885 (1942-03-01), Rodanet
patent: 2365372 (1944-12-01), Allen
patent: 2688894 (1954-09-01), Modrey
patent: 3166972 (1965-01-01), Rapata
patent: 4501417 (1985-02-01), Foster et al.
patent: 4548400 (1985-10-01), Foster et al.
patent: 4728095 (1988-03-01), Irvin et al.

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