Dispensing – With casing or support – Ambulant
Patent
1992-11-30
1994-05-03
Shaver, Kevin P.
Dispensing
With casing or support
Ambulant
192 46, 192 67R, 192 93R, A01C 1516
Patent
active
053079655
ABSTRACT:
A clutch mechanism (88) for a ground-driven top dresser (10) is actuated by an electric actuator (139) pivotally mounted to a U-shaped bracket (104). The shaft (141) of the actuator (139) is connected to flanges (135) radially extending from a rotatable tube (132) through a lost motion means in the form of elongated slots (145) formed in the flanges (135) and which slideably receive a pin (143) carried by the actuator shaft (141). A cam (134) is removably attached to flanges (133) radially extending from the rotatable tube (132) opposite to the actuator flanges (135). The cam (134) has first and second portions (136a,b) for engaging the pivotal arm (110) which engages and disengages the clutch mechanism (88). The spring (96) biasing the jaw members (90, 92) of the clutch mechanism (88) together allows the cam (134) to circumvent the constant velocity extension of the actuator (139) due to the lost motion connection to quickly engage the clutch mechanism (88) when the cam (134) moves to an over-center position from the second portion (136b) to the first portion (136a) of the cam (134).
REFERENCES:
patent: 2092104 (1937-09-01), Bowden
patent: 2267415 (1941-12-01), Myers
patent: 2630197 (1953-03-01), Morgenstern
patent: 2658396 (1953-11-01), Christiance
patent: 3161269 (1964-12-01), Janssen
patent: 3429056 (1969-02-01), Metzger
patent: 4438873 (1984-03-01), Kaercher, Jr.
Shaver Kevin P.
Turfco Manufacturing Incorporated
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