Advancing material of indeterminate length – Means to engage longitudinally spaced modifications in material – Pins on flexible belt or chain
Patent
1981-09-23
1983-06-21
Gilreath, Stanley N.
Advancing material of indeterminate length
Means to engage longitudinally spaced modifications in material
Pins on flexible belt or chain
B65H 1738
Patent
active
043890075
ABSTRACT:
A sheet-feed tractor in which the frame members are held together by the clamp parts employs a movable clamp part with a ring portion from which extend a lever and an extension portion. The stationary clamp portion provides a tab on its outer surface, and the frame member from which the stationary clamp part extends also has a post extending from it with a tab on the post. The interior surface of the ring portion provides an engagement surface that engages the tab on the stationary clamp part, while the extension provides an engagement surface that engages the tab on the post. The two sets of tabs and posts cause the movable clamp part to bear against one of the frame members at least at two positions and thereby hold the frame members reliably in position.
REFERENCES:
patent: 3930601 (1976-01-01), Masuda
patent: 4129239 (1978-12-01), Hubbard
patent: 4199091 (1980-04-01), Hubbard
patent: 4214691 (1980-07-01), van Namen
patent: 4226353 (1980-10-01), Blaskovic et al.
patent: 4315585 (1982-02-01), Seitz
Data Motion Incorporated
Gilreath Stanley N.
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