Sheet feeding or delivering – Special articles
Patent
1984-09-11
1987-08-25
Schacher, Richard A.
Sheet feeding or delivering
Special articles
271 11, 271 183, 271128, 271151, 271146, 271167, 271243, B65H 510
Patent
active
046887814
ABSTRACT:
Stacked fabric parts are separated and fed seriatim by apparatus having an endless conveyor which feeds the stack into position for separating the uppermost part from the stack. A mechanism having a knife edge bar or opposed fabric engaging needles is lowered and engages the part for dragging the part to be separated off of the stack. The second part on the stack is held with the stack by a pressure force by a series of vacuum providing orifices or recesses in a horizontally disposed support surface and/or by retractable fabric piercing needles. The part separating and translating bar is connected to a support plate which may be vibrated in a generally horizontal plane to assist in breaking the frictional connection between the part to be separated and the remaining parts in the stack as they are separated from each other. The separated parts are presented seriatim to a guide surface which guides the part under the conveyance of an air jet stream along a feed path to another work station.
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patent: 4591140 (1986-05-01), Illig
Levi Strauss & Co.
Schacher Richard A,.
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