Scissors sharpener

Details Scissors sharpener Scissors sharpener

1976-07-15

1977-09-20

Smith, Al Lawrence

Abrasive tool making process, material, or composition

With carbohydrate or reaction product thereof

51285, B24B 352

Patent

active

040487601

ABSTRACT:
A pair of slightly peripherally overlapped and axially spaced rotary grinding members are provided and journalled for rotation about generally parallel axes of rotation. The peripheral portions of the remote axial faces of the grinding members are oppositely bevelled and rotary torque producing structure is provided and drivingly coupled to the grinding members for driving the latter in opposite directions of rotation. Further, structure is provided defining oppositely facing substantially co-planar bearing surfaces on opposite sides of and disposed substantially normal to a plane normal to the axes of rotation of the rotary grinding members and disposed between the overlapped portions of the rotary grinding members. The bearing surfaces are disposed in generally equal chord planes of the rotary grinding members spaced substantially equally from and paralleling the axes of rotation of the rotary grinding members.

REFERENCES:
patent: 153677 (1874-08-01), Ilingworth
patent: 1027005 (1912-05-01), Seymour
patent: 1078508 (1913-11-01), Loomis
patent: 1184517 (1916-05-01), Burt
patent: 1963422 (1934-06-01), Scott
patent: 2228385 (1941-01-01), Burns
patent: 2451203 (1948-10-01), DeTray

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