Brake for paper roll bearing shaft in paper roll support frame o

Details Brake for paper roll bearing shaft in paper roll support frame o Brake for paper roll bearing shaft in paper roll support frame o

1989-03-21

1990-02-27

Levy, Stuart S.

Winding, tensioning, or guiding

Coil holder or support

Spool or core

242 583, 242 7544, 242 7547, B65H 1900

Patent

active

049039091

ABSTRACT:
The brake for web bearing shaft in a web support frame of a web feeder for rotary press comprises a pneumatic brake provided individually on a web bearing shaft mounted rotatably on each web support arm of a radial arm member installed on a rotating shaft, a pneumatic circuit for feeding compressed air at every pneumatic brakes, a solenoid valve provided at every pneumatic circuits, a solenoid valve switching means for operating each solenoid valve according to a turning phase of each web support arm. Then, the solenoid valve is a valve provided with manual operation, and the solenoid valve switching means comprises either slip ring having a combination of segment conductors and brushes or segment cam and electric switch operated by the cam.

REFERENCES:
patent: 1995722 (1935-03-01), Smith
patent: 2782012 (1957-02-01), Coyne et al.
patent: 2963235 (1960-12-01), Pedersen et al.
patent: 3062467 (1962-11-01), Chase et al.
patent: 3226498 (1965-12-01), Carpenter et al.
patent: 3275761 (1966-09-01), Yakim
patent: 3342955 (1967-09-01), Smith et al.
patent: 3647995 (1972-03-01), Wisely
patent: 3813052 (1974-05-01), Swann et al.
patent: 4142167 (1979-02-01), Little et al.

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