Paper feeder

Details Paper feeder Paper feeder

1984-04-12

1986-09-16

Stoner, Jr., Bruce H.

Sheet feeding or delivering

Feeding

By means to convey sheet

4006375, 4006376, B65H 506

Patent

active

046118020

ABSTRACT:
A paper feeder is described, of the type which includes a cylindrical platen (16) and multiple pressure rollers (18,20) that press paper between themselves and the platen, which is of simple and inexpensive construction. The paper feeder includes a shaft (34) of square cross-section, a group of leaf springs (30) with inner ends mounted on the shaft and outer ends lying under the platen, and a group of roller assemblies (38) mounted on the outer ends of the leaf springs. The inner end of each leaf spring has tabs (40,42) on opposite sides, which are bent down at substantially right angles and which have square slots (46) for closely receiving the square shaft. The group of perhaps five leaf springs are mounted on the shaft with their tabs abutting one another, and with grip rings on opposite ends of the shaft to hold the springs in place.

REFERENCES:
patent: 3966037 (1976-06-01), Zambolin
patent: 4486108 (1984-12-01), Tanaka
Gerhardt, A. J., "Spring Design to Positively Retain Axle for Pressure Roll System", IBM Technical Disclosure Bulletin, vol. 19, No. 2, Jul. 1976, p. 676.
Lloyd, E. R. et al., "Paper Feed Mechanism", vol. 23, No. 2, Jul. 1980, p. 678.
Estabrooks, D. C. et al., "Nip Roller/Force Equalizing Assembly", IBM Technical Disclosure Bulletin, vol. 23, No. 3, Aug. 1980, p. 939.

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