Lift truck paper roll clamp having automatically adjustable roll

Details Lift truck paper roll clamp having automatically adjustable roll Lift truck paper roll clamp having automatically adjustable roll

1982-02-01

1984-03-06

Paperner, Leslie J.

Material or article handling

Elevator or hoist and loading or unloading means therefor

Grab

294 86R, 294106, 414621, 414911, B66F 918

Patent

active

044351178

ABSTRACT:
A lift truck load clamp, for handling cylindrical loads such as paper rolls, having an automatically adjustable load positioner extending between the clamp arms which moves forwardly in response to closure of the clamp arms and rearwardly in response to opening thereof to assist the lift truck operator in positioning the clamp arms with respect to rolls of different diameters such that the contact pads of the clamp arms automatically grip such differently-sized rolls in diametrically-opposed relation. The load positioner is particularly adapted for use with clamps wherein both clamp arms are movable with respect to a clamp frame, because each end of the positioner is separately movable forwardly or rearwardly with respect to the frame in response to movement of the respective adjacent clamp arm. The positioner is also well adapted for use with clamps of the type wherein the clamp arms can be moved transversely in unison to handle a paper roll in different transverse positions, due to the fact that the load positioner is movable transversely in unison with the clamp arms. The positioner is flexibly conformable to the cylindrical surfaces of paper rolls of different diameters to avoid damage to the fragile surfaces thereof.

REFERENCES:
patent: 2596477 (1952-05-01), Frischmann et al.
patent: 2959310 (1960-11-01), Meister
patent: 3371952 (1968-03-01), Hunger
patent: 3782567 (1974-01-01), Likas et al.
patent: 3896957 (1975-07-01), Sinclair
patent: 4127205 (1978-11-01), Farmer et al.

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