Device for feeding flat material

Details Device for feeding flat material Device for feeding flat material

1996-05-10

1998-01-27

Skaggs, H. Grant

Sheet feeding or delivering

Feeding

Separators

271119, 271121, 271127, 271145, 271167, B65H 306

Patent

active

057115192

ABSTRACT:
The feed device comprises a supply chamber (6) with a forward wall (9) having an inclined plane (45) provided with retaining elements for the stack of sheets contained in the supply chamber in the form of strips of cut pile fabric (48) whose fibers retain the sheets by their forward edge. A drive shaft (23) carries drive rolls (20) comprising a sector (100) with high coefficient of friction to drive the top sheet from the stack and a sector (101) with low coefficient of friction permitting sliding of the sheet during an alignment phase of the sheet. The drive shaft (23) is actuated by a drive mechanism (50) comprising a clutch with a toothed pinion (62) having two discontinuities defining rest and stop positions of alignment coacting with a clutch and retaining lever (66) controlled by reverse rotation of the drive motor (58) of the printer. An advancing mechanism (54) permits effecting engagement of the toothed pinion (62) with an intermediate pinion (61) upon a clutch control. Actuating cams (106) permit pressing the support plate (12) of the sheets back to its rest position. This support plate (12) is subdivided into three portions resiliently urged by three springs (16) in the direction of the drive rolls (20).

REFERENCES:
patent: 3825249 (1974-07-01), Zimmer
patent: 4003567 (1977-01-01), Berger et al.
patent: 5253854 (1993-10-01), Tanoue et al.
patent: 5358230 (1994-10-01), Ikemori et al.
patent: 5372359 (1994-12-01), Miura et al.
patent: 5419543 (1995-05-01), Nakamura et al.
patent: 5527028 (1996-06-01), Ishikawa
patent: 5613672 (1997-03-01), Tanaka et al.

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