Lever locking mechanism

Machine element or mechanism – Control lever and linkage systems – Elements

Patent

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Details

G05G 506

Patent

active

050314769

ABSTRACT:
A mechanism is disclosed which automatically locks and unlocks a lever including (i) a link connected pivotally to an fixed object and having opposed plates and (ii) a rod with a lower portion located between the opposed plates and with a lower end pivotally connected to the link. The locking mechanism comprises two stopper means fixed between the opposed plates and so located as to allow the rod to make a pivotal movement for a predetermined angle relative to the link, a hook connected pivotally to the link, a lock pin projecting from the fixed object and so located as to engage with the hook to lock the lever when the lever is located in a position predetermined relative to the fixed object, means for urging the hook toward the lower end of the rod, and an unlock pin projecting from the hook and so located as to engage with the rod to disengage the hook from the lock pin against the action of the urging means, when the rod is turned toward one of the stopper means, thereby unlocking the lever.

REFERENCES:
patent: 1103151 (1914-07-01), Morris
patent: 1182707 (1916-05-01), Quade, Jr.
patent: 1543422 (1925-06-01), Coultas
patent: 1898869 (1933-02-01), Dadd
patent: 1998972 (1935-04-01), Snell
patent: 2097328 (1937-10-01), Jandus
patent: 2158263 (1939-05-01), Wenn
patent: 2328720 (1943-09-01), House
patent: 4923357 (1990-05-01), Isogai

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