Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof
Patent
1991-05-20
1992-12-22
Yost, Frank T.
Abrasive tool making process, material, or composition
With carbohydrate or reaction product thereof
51371, 51382, B24D 1504, B24D 1500, B24D 1700
Patent
active
051725240
ABSTRACT:
A hand sanding block is formed with two blocks, which may be of equal or unequal lengths, of like cross section and disposed in coplanar relationship with opposed inner ends. The blocks are freely movable towards away from each other, event to the point of total separation, by means of a pair of spaced dowel pins projecting from one block for telescopic engagement in corresponding spring loaded sockets in the other block and are normally held apart in spaced relationship by the springs in the sockets. For mounting and removing an endless sanding belt or an abrasive sanding strip, the blocks are pressed together so the inner ends are in abutting relationship and once the belt or strip is in place, the holding pressure is released so the block can move apart to provide tension on the belt or strip. The block with the sockets has a transverse opening, communicating with the sockets and the dowel pins, into which a removable stop is inserted for wedging engagement against the dowel pins to hold them immovable for maintaining the inner ends of the blocks together to mount or remove the belt or strip. A resilient tether is secured across the opposed inner ends to prevent the total separation of the blocks at any time.
REFERENCES:
patent: 2400928 (1946-05-01), Hein
patent: 2519486 (1950-08-01), Lovejoy
patent: 2761257 (1956-09-01), Mendelsohn
patent: 3063208 (1962-11-01), Bell et al.
patent: 3106806 (1963-10-01), Hutchins
patent: 3510991 (1970-05-01), Bowen
patent: 3562967 (1971-02-01), Erickson
patent: 4475317 (1984-10-01), Dicke
Adler Morton S.
Heyrana Sr. Paul M.
Yost Frank T.
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