Sheet-feed tractor with eccentric clamping device

Details Sheet-feed tractor with eccentric clamping device Sheet-feed tractor with eccentric clamping device

1980-03-10

1982-02-16

Gilreath, Stanley N.

Advancing material of indeterminate length

Means to engage longitudinally spaced modifications in material

Pins on flexible belt or chain

269236, 269287, 403350, B65H 1738, B65H 1752

Patent

active

043155855

ABSTRACT:
A sheet-feed tractor includes clamp means made of two members through which a passage is provided defined partly by both members. One member is pivotably mounted on the other in such a manner that the size of the passage is reduced by pivoting of the pivotable member. Reduction of the size of the passage can clamp a support shaft received in the passage, and the clamping force tends to enhance the static friction between the members so as to keep the clamping means in clamping position.

REFERENCES:
patent: 790590 (1905-05-01), Reynolds et al.
patent: 827267 (1906-07-01), Schmidt
patent: 2728616 (1955-12-01), Potter
patent: 3159263 (1964-12-01), Goreham
patent: 3283875 (1966-11-01), Davies
patent: 3688959 (1972-09-01), Staneck et al.
patent: 3825359 (1974-07-01), Fulton
patent: 4129239 (1978-12-01), Hubbard

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