Gripper feed device

Details Gripper feed device Gripper feed device

1988-12-08

1990-05-15

Levy, Stuart S.

Advancing material of indeterminate length

Plural material-moving means

226142, B65H 2016

Patent

active

049250787

ABSTRACT:
A gripper feed devices comprises a housing, first and second tension grippers, first and second toothed rods fixedly connected to the first and second tension grippers, and a rotatable pinion meshing with the toothed rods for converting the rotational movement of the pinion into linear, symmetrical movement of the tension grippers in opposite directions. The pinion is cyclically driven, via a main shaft and a crank disk mounted on the main shaft, by two piston/cylinder arrangements connected at different points on the crank disk. The two piston/cylinder arrangements are designed to operate alternately and in opposite directions, thus imparting a cyclical rotation to the pinion. An adjusting disk mounted on the main shaft and an adjusting sled to which the piston/cylinder arrangements are connected are also provided to vary the stroke length of the piston, and thereby the extent of linear movement of the tension grippers.

REFERENCES:
patent: 2468236 (1949-04-01), Rue
patent: 3583268 (1971-06-01), Scribner
patent: 4580710 (1986-04-01), Ledgerwood
patent: 4610380 (1986-09-01), Plumb
Brochure "Differenzdruckpresse"--Leinhaas (Differential Pressure Press-Leinhaas) 6 pages.

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