Excavating – Snow or ice removing or grooming by portable device – Railway clearer
Patent
1978-05-08
1980-09-02
Crowder, Clifford D.
Excavating
Snow or ice removing or grooming by portable device
Railway clearer
172683, 172699, 172744, A01B 364
Patent
active
042199476
ABSTRACT:
A plow apparatus for laying cable, pipe, tile and the like underground having a blade with an upwardly extending shank portion for support. A blade holder connects the shank to a plow-pulling crawler tractor and the holder has an opening therein to receive the shank. An arm is pivotally mounted on the blade holder on one end of the arm to press the shank against an interior surface of the holder in the opening. A blade dog pivotally mounted on the holder is also provided to lock the shank in the holder at a selected height by means of recesses formed on the rear surface of the shank at various heights. One of the recesses is engaged by the blade dog in the locked position. The invention permits one machine operator to quickly and easily adjust the cutting depth of the blade without the use of tools.
REFERENCES:
patent: 24969 (1859-08-01), Watson
patent: 127475 (1872-06-01), Gillette
patent: 206334 (1878-07-01), Jarrell
patent: 1100920 (1914-06-01), Seay
patent: 1136172 (1915-04-01), Scott
patent: 2912774 (1959-11-01), McCrary
patent: 3050135 (1962-08-01), Kelley
patent: 3274713 (1966-09-01), Jones
patent: 3571956 (1971-03-01), Heiberg
patent: 3713300 (1973-01-01), Ward
patent: 3738432 (1973-06-01), Kelley
patent: 3752239 (1973-08-01), Kelley
patent: 3814191 (1974-06-01), Tilbury
patent: 4142817 (1979-03-01), Lazure
Crowder Clifford D.
Eddy Oxford Enterprises Limited
LandOfFree
Plow or digging machine automatic blade adjusting and locking sy does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Plow or digging machine automatic blade adjusting and locking sy, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Plow or digging machine automatic blade adjusting and locking sy will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1702996