Advancing material of indeterminate length – Means to engage longitudinally spaced modifications in material – Pins on flexible belt or chain
Patent
1987-08-14
1988-11-29
Werner, David
Advancing material of indeterminate length
Means to engage longitudinally spaced modifications in material
Pins on flexible belt or chain
4006162, B65H 2020, B41J 1130
Patent
active
047875453
ABSTRACT:
A paper feeding mechanism wherein tractors which convey a sheet of paper by means of belts when a driven shaft connected to a drive gear is rotated are supported swingable round a support shaft to move from their closed position to their open position and vice versa, characterized by a stopper member having those teeth which are selectively engaged with the drive gear to stop the rotation of the drive gear, and by a drive member for driving the stopper member to engage its teeth with the drive gear only when the tractors are under their open position. The free running of the belts can be this prevented when the tractors are under their open state, thereby allowing the sheet of paper to be stably mounted.
REFERENCES:
patent: 4214691 (1980-07-01), Van Namen
patent: 4662767 (1987-05-01), Pimintel
Alps Electric Co. ,Ltd.
Shoup Guy W.
Werner David
Winters Paul J.
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