Pressing mechanism for paper cutting device

Details Pressing mechanism for paper cutting device Pressing mechanism for paper cutting device

2005-04-05

2005-04-05

Peterson, Kenneth E. (Department: 3724)

Presses

Binding

Binder applying

C083S464000, C083S467100, C083S468200

Reexamination Certificate

active

06874410

ABSTRACT:
A pressing mechanism for a paper cutting device includes a frame with a U-shaped bracket connected thereto and a threaded rod extends through two extensions of the bracket. A wheel is connected to a top end of the threaded rod. A sleeve is threadedly mounted to the threaded rod and includes two rack portions. Two link assemblies each have a first plate and a second plate which is connected to one of two ends of the first plate. The other end of each of the first plates has teeth which are engaged with the rack portions of the sleeve. The two first plates are pivotably connected to the frame and the two second plates are pivotably connected to a pressing member. The sleeve is movable along the threaded rod by rotating the threaded rod and the two first plates are driven to pivot so as to move the pressing member up and down.

REFERENCES:
patent: 819615 (1906-05-01), Stirling
patent: 1112326 (1914-09-01), Roper
patent: 1186287 (1916-06-01), Cromwell
patent: 1230227 (1917-06-01), Salter
patent: 3580123 (1971-05-01), Westra et al.
patent: 3987694 (1976-10-01), Kaufman
patent: 4161900 (1979-07-01), Mendelsohn
patent: 4455904 (1984-06-01), Havner et al.

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