Handling: hand and hoist-line implements – Hand forks and shovels – Convertible and combined
Patent
1994-12-30
1996-06-18
Kramer, Dean
Handling: hand and hoist-line implements
Hand forks and shovels
Convertible and combined
294 555, 5640004, A01D 1106
Patent
active
055270778
ABSTRACT:
An attachment for converting a pitchfork into a combination pitchfork and rake. The attachment comprises a rake head having a plurality of apertures to receive the tines of a pitchfork, along which it is movable between a retracted and an extended position, and a linear array of rake prongs that depend from the rake bar. In a preferred embodiment, associated with each prong is a clevis attached to the rake bar to which the prong is pivotally mounted for free rotation about a horizontal axis during forward-directed scooping motions of the pitchfork along a ground surface when the attachment is in an extended position; during rear-directed, raking motions of the pitchfork, however, a lower portion of a front wall of the clevis permits rotation of the prong only up to a vertical position. Accordingly, the attachment provides a single tool capable of rapid and convenient alternation between raking and pitching motions.
REFERENCES:
patent: 685022 (1901-10-01), Williams
patent: 705008 (1902-07-01), Zwicker
patent: 795383 (1905-07-01), Arason
patent: 894491 (1908-07-01), Frees
patent: 1139270 (1915-05-01), Gould
patent: 1185426 (1916-05-01), Miller et al.
patent: 1374800 (1921-04-01), Anderson
patent: 1474650 (1923-11-01), Storr
patent: 1493520 (1924-05-01), Clark
Coyne Brian J.
Kramer Dean
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