Binder

Details Binder Binder

1995-05-12

1997-01-14

Fridie, Jr., Willmon

Binder device releasably engaging aperture or notch of sheet

Opposed sheet retainers involving relative rectilinear travel

Telescopic retainers with means to telescopically drive...

402 46, B42F 302

Patent

active

055932436

ABSTRACT:
A binder to bind papers between a paper supporting plate and a paper holding plate by inserting paper binding cylinders into punched holes of said papers, which comprises a rear plate formed in L-letter in section at an edge of said paper supporting plate, a rack forming plate formed in L-letter in section at an edge of said paper holding plate, opposing said rear plate and overlapping each other, guide portions provided on inner side of the rear plate in the areas of both side edges for guiding both side edges of the rack forming plate and allowing a vertical and parallel movement against the rear plate, rack teeth having configuration of saw teeth in section provided on the surface of said rack forming plate opposing to the inner side of the rear plate, click member rotatably mounted on the rear plate, having a click pawl for engaging with said rack teeth to prevent the rack forming plate from moving upward, and a spring means provided on said click member to bias said click pawl resiliently against the rack teeth, wherein papers can be bound regardless the thickness thereof merely by depressing the paper holding plate.

REFERENCES:
patent: 581123 (1897-04-01), Leslie
patent: 681223 (1901-08-01), Hulquist
patent: 793735 (1905-07-01), McDonald
patent: 1784315 (1930-12-01), Power
patent: 1995735 (1935-03-01), Dawson et al.
patent: 1996940 (1935-04-01), Unger
patent: 4129396 (1978-12-01), Stecklow
patent: 4730950 (1988-03-01), Ominato

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