Sheet material dispensing mechanism
AssigneeReynolds Metals Company
InventorJohn R. McLean
Life of this patent
Estimating the term…
Abstract
An apparatus is disclosed for intermittently dispensing sheet material from a roll to an operating apparatus. The apparatus includes means for accumulating sheet material from the roll which does not require the roll to be motor driven and means for preventing pull back of the sheet material through the dispensing apparatus and permitting low force advancement of the sheet material.
Claims4
An apparatus for dispensing sheet material from a roll comprising a reel upon which said roll is mounted, brake means for preventing overcoast of said roll during dispensing therefrom, a plurality of free-wheeling, fixedly mounted rollers, a plurality of free-wheeling, pivotally mounted rollers, said fixedly mounted rollers and said pivotally mounted rollers forming a sheet material accumulator, a mounting for said pivotally mounted rollers comprising a pair of bars between which said pivotally mounted rollers are mounted and a rotatable rod upon which said bars are mounted, an air cylinder connected to said mounting for said pivotally mounted rollers for pivoting said pivotally mounted rollers to accumulate sheet material in said accumulator, a spring connected to said mounting for said pivotally mounted rollers and acting to oppose the action of said air cylinder to maintain low tension in said sheet material during holding thereof in said accumulator and means for preventing pull back of said sheet material into said apparatus after dispensing therefrom.
Dependencies are inferred from the claim text.