Advancing material of indeterminate length – Means to engage longitudinally spaced modifications in material – Pins on flexible belt or chain
Patent
1989-12-11
1992-03-24
Stodola, Daniel P.
Advancing material of indeterminate length
Means to engage longitudinally spaced modifications in material
Pins on flexible belt or chain
4006161, 226 87, B65H 2020
Patent
active
050979990
ABSTRACT:
The drive assembly for a form feeding tractor has a flexible endless belt comprising an endless band member of synthetic resin with a generrally planar outer surface and metallic drive pins spaced about its circumference. The band member has a series of spaced apart drive sections each with a plurality of drive teeth extending transversely thereof on its inner surface, and the metallic drive pins are disposed in the spaces between the drive sections. The pins have a base section which extends through the band member with a circumferential groove intermediate its length and into which the band member extends, and the band member has platform portions on its inner surface which extend about the base portions on the pins. The cooperating drive sprocket has in its circumference a series of spaced apart drive sections with transversely extending drive grooves configured and dimensioned to mesh with the drive teeth of the belt, and transversely extending recesses in its circumference in the spaces between the drive sections. The platform portions of the belt are received in the recesses which are of greater width than the platform portions to preclude engagement with the side faces of the platform portions.
REFERENCES:
patent: 2140028 (1936-05-01), Nichols
patent: 3392893 (1968-07-01), Bennett et al.
patent: 3477626 (1967-10-01), Hilpert
patent: 3608801 (1971-09-01), Nystrand
patent: 3688959 (1972-09-01), Staneck et al.
patent: 3825162 (1974-07-01), Hubbard
patent: 4130230 (1978-12-01), Seitz
patent: 4159794 (1979-07-01), Seitz
C. M. McCray, IBM Technical Disclosure Bulletin, "Forms Feed Tractor", vol. 20, No. 11A, Apr. 1978.
Bowen P.
Seitz Corporation
Stodola Daniel P.
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