Draw off control system for a roll of material

Details Draw off control system for a roll of material Draw off control system for a roll of material

1979-07-24

1981-01-20

McCarthy, Edward J.

Winding, tensioning, or guiding

Coil holder or support

Spool or core

B65H 2522

Patent

active

042457939

ABSTRACT:
The disclosure relates to a draw off control system for a roll of material in which a pivoted arm carries one end of a roller around which the material is passed to pull the arm in one direction, the arm being counter-balanced by a pneumatically operated thruster having a plunger acting on the arm. The force provided by the thruster varies with projection of the plunger so that as the material tension varies over a certain range the arm will move to establish a new equilibrium position. Movement of the arm in one direction with falling tension is arranged to apply a brake to the feed roller of the material when the arm moves beyond a certain position, the brake is applied to increase tension, the brake being released when the arm returns past said position.

REFERENCES:
patent: 2343181 (1944-02-01), Heinz
patent: 2925963 (1960-02-01), Gelleke
patent: 2974893 (1961-03-01), Aaron
patent: 4000865 (1977-01-01), Gaskins

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