Belt sander for sanding external and internal surfaces

Details Belt sander for sanding external and internal surfaces Belt sander for sanding external and internal surfaces

1980-04-10

1981-05-26

Whitehead, Harold D.

Abrasive tool making process, material, or composition

With carbohydrate or reaction product thereof

B24B 2116

Patent

active

042689988

ABSTRACT:
In a first position an endless sander belt extending over spaced drive and idler pulleys has one run extending straight between the pulleys past an intermediate work station and a return run biased laterally outward therefrom by a swinging idler drum mounted on a pivoted arm. In a second position an intermediate portion of the return run is held parallel with and closely adjacent the straight run by the swinging idler drum and a second idler drum rotating on a fixed pivot. Belt tension is maintained in both positions by an over center acting spring.

REFERENCES:
patent: 1881162 (1932-10-01), Aurori
patent: 2313254 (1943-03-01), Mead
patent: 2470615 (1949-05-01), Grover
patent: 3127712 (1964-04-01), Krogen

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