Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof
Patent
1984-06-20
1986-09-23
Schmidt, Frederick R.
Abrasive tool making process, material, or composition
With carbohydrate or reaction product thereof
51109BS, 51128, B24B 336
Patent
active
046127313
ABSTRACT:
Apparatus for sharpening knives, scissors, and the like comprises a housing forming an enclosure having two oppositely disposed walls each provided with an opening, such openings being coaxially aligned. A motor is mounted on the outer side of one of these oppositely disposed walls, the motor having a shaft extending through the opening in the one wall into the enclosure. A second shaft extends through the opening in the other oppositely disposed wall. A grinding wheel is fastened to the end of the second shaft positioned outside the enclosure. Provision is made for connecting the motor shaft to the other end of the second shaft to rotatably drive the second shaft and to enable axial movement of the motor shaft and the second shaft with respect to each other. A pair of axially spaced radial flanges is mounted on the second shaft within the enclosure. A pair of axially spaced strip-shaped leaf springs cooperates with the radial flanges and is attached to the enclosure internally thereof, one of the leaf springs being in contact with one of the radial flanges when the grinding wheel is in its inoperative position. A cover is associated with the housing and is provided with a guide passage for drawing through a knife or the like into contact with the grinding wheel, the knife or the like when drawn through said guide passage exerting pressure on the grinding wheel and thereby moving the second shaft axially in one direction, a leaf spring, following the drawing of the knife or the like through such guide passage, axially moving the second shaft in the opposite direction.
REFERENCES:
patent: 730706 (1903-06-01), Rose
patent: 2114106 (1938-04-01), Geveke
patent: 2332609 (1943-10-01), Simons
patent: 3412508 (1968-11-01), Schell, Jr.
patent: 4069619 (1978-01-01), Escamilla
Meislin Debra S.
Schmidt Frederick R.
Schneider Rolf E.
U.S. Philips Corporation
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