Spreader tool

Details Spreader tool Spreader tool

1980-04-21

1982-06-08

Larson, Lowell A.

Metal deforming

By relatively receding work-engaging tool-faces

72452, 72705, B66F 300

Patent

active

043333303

ABSTRACT:
A spreader tool having opposed force arms separately pivotally mounted on a base member for annular movement in opposite directions in response to axial movement of a driven piston of an associated jack wherein the inner edges of the force arms bear upon roller means mounted on the forward end of the piston. The curve of the inner edge of the force arms is preferably so constructed that the angle at which a constant axial force of the piston is applied to the force arm by the roller means is always such that the force applied to the load by the force arm is constant.

REFERENCES:
patent: 1530227 (1925-03-01), Bourassa
patent: 2447401 (1948-08-01), Ferguson et al.
patent: 2861488 (1958-11-01), Barnes
patent: 2888051 (1959-05-01), Burton
patent: 3819154 (1974-06-01), Hurst et al.

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