Manually assemblable sheet-feed tractor

Details Manually assemblable sheet-feed tractor Manually assemblable sheet-feed tractor

1981-09-25

1983-07-05

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

043913997

ABSTRACT:
A sheet-feed tractor for printers employs two principal frame members, one of which is integrally molded with a part of the tractor clamp. A second clamp part is assembled onto the first clamp part, and the two clamp parts together hold the frame members in assembly. A snap-fit cover prevents rotation of the second clamp part to a position in which it can be removed from the first clamp part, so the tractor is held in assembly so long as the cover is in place. Disassembly is easily achieved by removing the cover, pivoting the second clamp part to a position in which it can be removed from the first clamp part, and then easily removing the remaining parts of the tractor.

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

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