Tractor front loaders

Details Tractor front loaders Tractor front loaders

1983-06-07

1985-02-12

Valenza, Joseph E.

Material or article handling

Vertically swinging load support

Shovel or fork type

172273, B66C 2300

Patent

active

044988397

ABSTRACT:
Tractor front loaders of drive-in type have brackets fixed to a tractor and engageable with a detachable sub-frame carrying a boom assembly mounting a bucket. The sub-frame is secured to the brackets by close-fitting pins causing removal difficulties, or loose-fitting pins causing loader instability and accelerated pin wear. Easy-release pins are therefore provided, each passing with substantial radial clearance through aligned axially-spaced holes in one bracket and fitting, between the holes, in an eccentric bush which fits in a boss fixed to the subframe and is rotatable by a handle into an operative position in which the pin establishes contact with one side of the holes and the boss establishes clamping contact with a cam-plate fixed to the bracket, or into an easy-release position in which the contacts are disestablished.

REFERENCES:
patent: 4318662 (1982-03-01), Erickson et al.
patent: 4345870 (1982-08-01), Anderson et al.
patent: 4383793 (1983-05-01), Weir
patent: 4420272 (1983-12-01), Ingalls et al.

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