Material or article handling – Elevator or hoist and loading or unloading means therefor – Grab
Patent
1978-06-29
1980-01-29
Paperner, L. J.
Material or article handling
Elevator or hoist and loading or unloading means therefor
Grab
414671, B66F 918
Patent
active
041859448
ABSTRACT:
A slide structure for lift truck mounted parallel arm clamps, fork positioners and the like. A slide guide frame adapted to be mounted on the load carriage of the lift truck carries a plurality of elongate, transversely movable horizontal slide members for mounting opposed, openable and closable load arms. Each slide member has an elongate rear portion extending along the length thereof which fits inside a respective guide, and an elongate front portion, also extending substantially along the length of the slide member, which is always external of the guide and to which the clamp arm or other load arm may be attached directly. Each slide member is characterized in that it has substantially no abrupt cross-sectional changes in its horizontal dimension throughout its length, while having markedly nonuniform vertical dimensions along its length such that the front portion of each slide member is quite narrow vertically through the majority of its length but extends both upward and downward at one end so as to form an enlarged section having a vertical surface for the attachment of a load arm at such end. The enlarged end sections of the front portions of respective adjacent slide members are at opposite ends of the adjacent slide members so that the narrow front section of one slide member is juxtaposed vertically with the enlarged front section of the adjacent slide member creating a vertically nested relationship between adjacent slide members throughout their entire range movement.
REFERENCES:
patent: 2671571 (1954-03-01), Gerhardt
patent: 2782065 (1957-02-01), Lord
patent: 2821316 (1958-01-01), Saint
patent: 2874862 (1959-02-01), Farmer et al.
patent: 3203567 (1965-08-01), Huitfeldt
patent: 3245562 (1966-04-01), Horton
Cascade Corporation
Paperner L. J.
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