Abrasive apparatus

Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof


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51378, B24B 4100




An arbor is threaded in a first direction. An adaptor bushing is disposed on the arbor and is externally threaded in a second direction opposite to the first direction. A reinforcing plate is rotatable on the adaptor bushing in the second direction. A detent arrangement may be provided on the adapter bushing and the reinforcing plate to limit the movement of the reinforcing plate relative to the adaptor bushing. An abrasive wheel or disc is provided with first and second opposite surfaces and abrasive particles are disposed throughout the disc. A nut is disposed in a bore in the disc and is threaded for rotation on the arbor in the first direction. When the disc engages the reinforcing plate, continued rotation of the disc in the first direction causes the reinforcing plate to rotate in the second direction and to press against the disc. When the disc is to be released, it is rotated in the second direction, thereby producing a movement of the reinforcing plate in the first direction to release the disc from the reinforcing plate. A yieldable detent relationship may be provided between the reinforcing plate and the disc to facilitate a coupling action between them in accordance with rotation of the disc in the first direction and to facilitate a releasing action on the disc in accordance with the rotation of the disc in the second direction.

patent: 507223 (1893-10-01), Hyde
patent: 566883 (1896-09-01), Alden
patent: 2417680 (1947-03-01), Decker
patent: 2726493 (1955-12-01), Young
patent: 3500592 (1970-03-01), Harrist
patent: 3596415 (1971-08-01), Donahue
patent: 3757328 (1973-09-01), Wakefield
patent: 3800483 (1974-04-01), Sherman
patent: 3808753 (1974-05-01), Maran
patent: 3844072 (1974-10-01), Haigh
patent: 3883998 (1975-05-01), Dosser
patent: 4354328 (1982-10-01), Ainoura
patent: 4439953 (1984-04-01), Block


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