Excavating – Snow or ice removing or grooming by portable device – Railway clearer
Patent
1983-03-11
1984-08-07
Burr, Edgar S.
Excavating
Snow or ice removing or grooming by portable device
Railway clearer
37 98, 37DIG18, 172 40, 172699, 404 90, 405182, E02F 518
Patent
active
044635095
ABSTRACT:
A vibratory plow assembly which eliminates the need for elastic torque cushioning elements. The plow assembly includes a vertically extending support frame and a vertically extending shaker frame having an elongated plow blade attached thereto with an oscillating mechanism supported on the shaker frame for reciprocating the shaker frame and plow blade. The support and shaker frames are interconnected adjacent their upper ends by conventional connecting links. The lower ends of the support and shaker frames are interconnected by a generally planar, horizontally disposed, spring plate member which is fixedly attached to the support frame at one end and is secured to the bottom of the shaker frame at its opposite end. The spring plate member withstands the loading imposed upon it by the shaker frame and plow blade while being flexible to deflect vertically thereby permitting the vibratory motion from the oscillating mechanism to be transmitted to the plow blade. Further, the vibratory movement imparted to the shaker frame by the oscillating mechanism is also transmitted to the spring plate member which results in a reinforcement or prolongation of the vibratory movement imparted to the plow blade.
REFERENCES:
patent: 3363423 (1968-01-01), Davis
patent: 3613799 (1971-10-01), Bodine
patent: 3618237 (1971-11-01), Davis
patent: 3638339 (1972-02-01), Vik
patent: 4102403 (1978-07-01), Steinberg
patent: 4164982 (1979-08-01), Draney
patent: 4200410 (1980-04-01), Baker et al.
patent: 4229045 (1980-10-01), Gurries
patent: 4252376 (1981-02-01), Gurries
patent: 4377914 (1983-03-01), Draney et al.
Burr Edgar S.
Cohen Moshe I.
J.I. Case Company
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