Non-ferrous pitchfork for use in silo

Details Non-ferrous pitchfork for use in silo Non-ferrous pitchfork for use in silo

1977-06-28

1978-11-07

Cherry, Johnny D.

Handling: hand and hoist-line implements

Hand forks and shovels

Convertible and combined

294 555, A01B 120, A01D 900

Patent

active

041242416

ABSTRACT:
A pitchfork for use in silos, and the like, where bulk material, such as grain, has become compacted due to exposure to moisture has a tine portion and a shank portion, with the former being constructed from a non-ferrous material which prevents creation of sparks when the tine portion strikes the compacted bulk material within the silo.

REFERENCES:
patent: 18670 (1857-11-01), Barton et al.
patent: 68352 (1867-09-01), Clow
patent: 310958 (1885-01-01), Noyes
patent: 571205 (1896-11-01), Sorenson
patent: 792350 (1905-06-01), Robison
patent: 2028483 (1936-01-01), Van Yahres
patent: 3108426 (1963-10-01), Rugg

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