Advancing material of indeterminate length – Means to engage longitudinally spaced modifications in material – Pins on flexible belt or chain
Patent
1991-04-19
1992-07-07
Stodola, Daniel P.
Advancing material of indeterminate length
Means to engage longitudinally spaced modifications in material
Pins on flexible belt or chain
4006161, 16227, B65H 2020
Patent
active
051275686
ABSTRACT:
In a sheet feed tractor, a lid confines a paper sheet on a frame surface when the paper sheet is conveyed on a belt. The lid is constructed so that it can overrun and return to its normal open position. The lid is constructed so as to include a lid member rotatable between a closed position spaced closely adjacent the surface of the frame so as to confine the paper sheet and an open position spaced away from the surface. The lid member has at one side edge thereof a pair of hinge pins disposed with a space therebetween and projecting over one side of the frame. The frame includes a pair of hinges projecting from one side of the frame and has the hinge pins of the lid member rotatably mounted thereto. The hinges of the frame include grooves opening towards the outside of the sheet feed tractor and are adapted to pivotally receive the hinge pins of the lid member. Upper portions of the hinges with the grooves include a stop member for resting the lid member there against in a first, open position and are resiliently movable when the lid member is rotated past the first, open position to a second position and when returned to the first, open position from the second position.
REFERENCES:
patent: 4316567 (1982-02-01), Grear et al.
patent: 4345607 (1982-08-01), Contreras et al.
patent: 4826337 (1989-05-01), Unuma
patent: 4951859 (1990-08-01), Gatto et al.
patent: 4955520 (1990-09-01), Ferguson
Hara Kouichi
Unuma Sadao
Yamashita Masashi
Bowen P.
Stodola Daniel P.
Tokai Kogyo Kabushiki Kaisha
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