Grinding machine for grinding or rasping of rubber items

Details Grinding machine for grinding or rasping of rubber items Grinding machine for grinding or rasping of rubber items

1988-01-05

1989-07-11

Schmidt, Frederick R.

Abrasive tool making process, material, or composition

With carbohydrate or reaction product thereof

51110, 51141, 51215E, B24B 700

Patent

active

048458970

ABSTRACT:
A grinding machine for grinding or rasping of the back of tread rubber (20 for retreading rubber tires comprises a conveyor belt (1) carrying the rubber item (2) in under a grinding roller (3) assisted by one-sidedly rotating rollers (4,5). Under the grinding roller (3) the conveyor belt is supported by a table (14) resting on a bellows cylinder (13), said table (14) carrying support means comprising blocks (30) resting on a hose (28) under pressure. On the convex top side (38) of each block rests a fish-plate (32), the top side (34) of which supports the conveyor belt (1) immediately under the grinding roller (3). The fish-plates (32) may individually adapt themselves to the shape of the rubber item (2) during the grinding process.

REFERENCES:
patent: 1521582 (1924-12-01), Stevens
patent: 2199135 (1940-04-01), Johnston
patent: 2284557 (1942-05-01), Brackett
patent: 2441108 (1948-05-01), Turner
patent: 3167889 (1965-02-01), Jacobi
patent: 3648415 (1972-03-01), Bair
patent: 3943806 (1976-03-01), Kuts
patent: 4258506 (1981-03-01), Robinson
patent: 4416090 (1983-11-01), Jonasson
patent: 4679354 (1987-07-01), Holst et al.
patent: 4719721 (1988-01-01), Stump

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