Machine element or mechanism – Mechanical movements – Rotary to rotary
Patent
1976-02-17
1978-02-07
Wyche, Benjamin W.
Machine element or mechanism
Mechanical movements
Rotary to rotary
354321, F16H 2114
Patent
active
040720616
ABSTRACT:
A roller drive assembly particularly designed for conveying photographic material through a processor unit and including a plurality of transport rollers positioned to define a predetermined path for a strip of photographic material, certain of said rollers having their axes coplanar and parallel to each other and one of said coplanar rollers being connected to a source of rotational power, one set of crank arms being respectively fixed to one end of said coplanar rollers and disposed in parallel relation to each other and a second set of crank arms fixed to the other end of said coplanar rollers and disposed in parallel relation to each other, a connecting bar pivotally connected the crank arms in each set to maintain the parallel relation of the arms in each set and to provide positive driving connections between the coplanar rollers set, said sets of crank arms being disposed in sufficiently out-of-phase relation to each other to prevent said connecting bars from moving over center and reversing the driving direction of some of said coplanar rollers.
REFERENCES:
patent: 386942 (1888-07-01), Thomas
patent: 833626 (1906-10-01), Pifer
patent: 1899589 (1933-02-01), Sanborn
patent: 3495520 (1970-02-01), Schumacher
Adams John W.
Pako Corporation
Ratliff, Jr. Wesley S.
Wyche Benjamin W.
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