Linkage system for a loader vehicle

Details Linkage system for a loader vehicle Linkage system for a loader vehicle

1982-06-01

1984-12-04

Spar, Robert J.

Material or article handling

Vertically swinging load support

Shovel or fork type

414917, E02F 370

Patent

active

044861419

ABSTRACT:
A linkage system for a loader vehicle of the type comprising a pair of parallel lift arms having a first upper end pivotally connected to upper end portions of a vertical bracket member secured to the frame of the vehicle and a second lower end pivoted to an associated lower back portion of a bucket, a pair of bellcrank levers, the central portions of which are pivotally connected to corresponding upper end portions of the lift arms, a pair of connecting links having one or a first end pivotally connected to a lower end of the bellcrank levers and its other end pivotally connected to associated intermediate portions of the bracket members secured to the frame and a pair of bucket cylinders for control of rotation of the bucket about its lower end portion, having a head end pivotally connected to a corresponding upper end of the bellcrank levers and a rod end pivotally connected to an associated upper back end portion of the bucket.
The principal characteristic of the invention comprises a pair of lifting cylinders having a head end pivotally connected to associated lower portions of the bracket members secured to the frame and a rod end pivotally connected to the lower end of the bellcrank levers and alternately to the first end of the connecting links.

REFERENCES:
patent: 2807379 (1957-09-01), Pilch
patent: 2817448 (1957-12-01), Pilch
patent: 2835396 (1958-05-01), Pilch
patent: 3743126 (1973-07-01), Seaberg

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