Fluid-operated ram

Details Fluid-operated ram Fluid-operated ram

1986-04-30

1987-08-04

Gilreath, Stanley N.

Winding, tensioning, or guiding

Coil holder or support

Spool or core

92 29, 92 84, 242 36, 242 37R, 242 39, B65H 5442, B65H 6302, B65H 6308

Patent

active

046840745

ABSTRACT:
A drive ram, particularly for a yarn winder, has the piston rod freely movable relative to both the piston and the ram cylinder in a first condition in which a locking washer is perpendicular to the longitudinal axis of the piston rod. Upon application of fluid pressure to effect relative movement of the piston and the cylinder, the locking washer is spring-urged against a wedge-like tipping washer which skews the lockingwasher and causes it to clamp the piston rod whereby the piston rod is then driven by the ram through a predetermined travel, from a starting position which is governed only by the diameter of the package at the time of operation of the package lift mechanism.
This allows a virtually constant lift travel of the ram, regardless of the diameter of the package at the time of operation of the ram.

REFERENCES:
patent: 1816352 (1931-07-01), Anderson
patent: 1958060 (1934-05-01), McKean
patent: 2866662 (1958-12-01), Nemeth
patent: 4090643 (1978-05-01), Wilkinson, Jr. et al.
patent: 4165829 (1979-08-01), Koveshnikov et al.
patent: 4195790 (1980-04-01), Reiners et al.
patent: 4497451 (1985-02-01), Guggemos et al.

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