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Publication numberUS2081192 A
Publication typeGrant
Publication dateMay 25, 1937
Filing dateNov 26, 1935
Priority dateNov 26, 1935
Publication numberUS 2081192 A, US 2081192A, US-A-2081192, US2081192 A, US2081192A
InventorsAllin George S, Patrick Flynn Theodore
Original AssigneeAllin George S, Patrick Flynn Theodore
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Rock blade for bulldozers
US 2081192 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

y 1937. s. s. ALLIN ET AL ROCK BLADE FOR BULIJDQZERS Filed Nov. 26, 1935 @Hmwmm M INVENTOR I4 1. 1. IN 0025 P. FLYNN n ATTORNEYJ Patented May 25, 1937 UNITED STAT/ES ROCK BLADE FOB. BULLDOZERS George S. Allin, Seattle, Wasln, and Theodore Patrick Flynn, Portland, Oreg.

Application November 26, .1935, Serial No. 51,640

.3 Claims.

This invention relates to improvements in ripper and bucker equipment, and it has reference more particularly to an improved form of blade that is designed for use especially on bulldozers, or similar machines; which blade is equipped with road ripping teeth mounted in a manner whereby a roadway may be torn up and whereby rocks, roots, etc., may be combed from the liner material.

More specifically stated, thepresent invention resides in the provision of a rock blade, including a mold board whereby a plurality of teeth are mounted for the ground ripping and combing action, and which teeth are adjustably mounted and are removable for replacement or sharpening.

It is also an object of this invention to provide for reversal of the teeth to adapt the machine either to a pushing or dragging action by the tractor.

It is also an object of the invention to provide a machine that is especially useful for brush bucking and piling.

Other objects of the invention reside in the details of construction and in the combination of parts and in their mode of operation, as will hereinafter be described.

In accomplishing these and other objects of the invention, we have provided the improved details of construction, the preferred forms of which are illustrated in the accompanying drawing, where- Fig, 1 is a perspective view of a bulldozer equipped with a blade made in accordance with the present invention.

Fig. 2 is a front elevation of the blade.

Fig. 3 is a plan view of a part of the blade, illustrating its connection with a mounting means.

Fig. 4 is a cross section, on the line 4-4 in Fig. 2.

Referring more in detail to the drawing- The present blade comprises an elongated mold board I of metal plate construction, wherein a vertical face plate 2 has horizontal base and upper plates 3 and 4 welded longitudinally thereto 'on its back side to give strength and rigidity. At the ends, and at spaced intervals therealong, are vertical brace webs 5 welded in place, and above the plate 4 are triangular gussets 6 backing up the top edge of the face plate 2.

Secured to the front wall 2 of the mold board, and spaced therefrom is a vertical plate I held in .place by webs 8 and 8' arranged intermediate the plates l and I in pairs to receive the mounting shanks of the teeth, presently described, therebetween and the pairs of webs are so spaced as to locate the teeth, in this instance, approximately one foot apart.

- .Each tooth comprises a. straight mounting shank I0 and a forwardly and downwardly curved foot Illa terminating in a point lb. The teeth are held in place by inserting the. shanks upwardly between webs 8 and 8', and then securing them in fixed positions of adjustment by pins l2 extended through alined openings in the webs and teeth shanks. Each tooth shank has a plurality of holes l3 in the upper end portion of its shank to provide for setting the tooth in different positions of vertical adjustment and to hold it by insertion of a pin 12 therethrough.

In the use of this blade with ordinary types of tractors, it is mounted at a point intermediate its ends on a pivot pin I 5 extended vertically through the mold board brace plates and through the vertex or forward end of a supporting frame l6 mounted to embrace the tractor and which frame also comprisesbrace beams I! located at opposite sides of the track frames l8 of the tractor and with forward ends pivotally attached to the ends of mold board by pins l9 and with their rearward ends. secured adjustably to the side members of frame It. The rear end of frame It is pivotally secured to the tractor and its forward end is vertically adjustable by a-lever mechanism designated at 20, thereby to regulate the elevation of the teeth above, or within the ground.

The present tractor does not form any particu- I lar part of the invention per se, but only as a part of a combination, and it may be any of the common types. As here shown, the frame which supports the blade and the lever mechanism for adjusting it corresponds to that construction of the pending application of George S. Allin. filed on November 25, 1933, under Serial No. 699,759. The blade, by slight modification in mounting means, is suitable for use with various kinds of tractors and interchangeably with bulldozer blades.

The teeth of theblade operate as the teeth of the ordinary ground ripper and are adjustable in the mold board. Also, they may be easily and readily removed when this is necessary for repair or replacement.

It is a feature of this invention that the ripper teeth may be reversed in their mounted position soas to point rearwardly instead of forwardly. In this latter position their operation -is practically the same, except that the tractor drags the teeth through the ground instead of pushing them machine is adapted particularly to brush bucking, and when a pile of brush has been accumulated in front of the blade, it may be lifted and transported on the teeth to some point of disposition.

It is contemplated also that means shall be provided in connection with this blade for retaining the brush pile on the teeth, or that the blade shall be made to tilt upwardly to facilitate holding the pile of brush thereon.

Having thus described our invention, what we claim as new therein and desire to secure by Letters Patent is- 1. The combination with a tractor, of a frame supported from and extended forwardly of the tractor, a mold board mounted by the frame at its forward end and extended transversely of the tractor in a substantially vertical plane, a plurality of ground ripping teeth with vertical shanks adjustably fixed in the mold board and having forwardly directed feet at their lower ends, and means on the tractor for vertically ad- Justing said frame to elevate or lower the teeth into the ground.

2. A machine of the character described, comprising a tractor, a blade mounting frame attached to the tractor and extended forwardly thereof and vertically adjustable at its forward end relative to the tractor, and a ripper blade supported by said frame forwardly of the tractor and comprising a mold board with vertical guideways formed therein at spaced intervals along the board and teeth having shank portions vertically adjustably contained in the guideways and means for locking the shanks at different positions of vertical adjustment.

3. A machine as recited in claim 2 wherein each of the teeth comprises a forwardly directed foot formed at the lower end of the shank and extended to an extent whereby it will serve to support a load when the frame is in raised position.


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2416654 *Aug 23, 1944Feb 25, 1947Landon Taylor RobertScarifier
US2420027 *Aug 5, 1944May 6, 1947Plant Choate Mfg Co IncEarth-working implement
US2468380 *Apr 8, 1947Apr 26, 1949Smith Roy WBulldozer blade attachment
US2475710 *Mar 20, 1947Jul 12, 1949Mccauley Halpin ECombination bulldozer and ripper
US2566547 *Jan 10, 1949Sep 4, 1951Bartiett George HCombined scraper blade and scarifier attachment for tractors
US2584868 *Nov 26, 1946Feb 5, 1952Guess Taylor AGrubbing attachment for tractors
US2735197 *May 1, 1950Feb 21, 1956 struemph
US2770056 *Aug 9, 1955Nov 13, 1956Hawkins Elmer WBrush rake attachment for a tractor
US2776504 *Aug 23, 1954Jan 8, 1957Green Donald HStump extractor
US2840932 *Sep 3, 1953Jul 1, 1958Breyer Theodore VEarth and material handling implement
US2840935 *Oct 5, 1954Jul 1, 1958Western Equipment Mfg CoEarth-working apparatus
US2882622 *Mar 1, 1954Apr 21, 1959Howard Lawrence ERoot cutters
US2911733 *Mar 23, 1956Nov 10, 1959John HaberstrohEnsilage spreader with bulldozer attachment
US3074190 *Jun 16, 1960Jan 22, 1963Wahl Harold FRear-mounted ripper
US3081564 *Apr 18, 1958Mar 19, 1963P A B B IncVehicle land clearing attachment
US3140898 *Jul 12, 1961Jul 14, 1964Rogers Edgar AMold board asphalt cutter wheel assembly
US3214041 *Nov 6, 1963Oct 26, 1965Allis Chalmers Mfg CoScoop for front end loaders
US3274710 *Jan 5, 1965Sep 27, 1966Frederick Wright JohnFork structures for pivotal attachment to vehicle mounted booms
US4463812 *Feb 15, 1983Aug 7, 1984Williamson Andrew OEarth moving apparatus
US5515625 *Jul 14, 1994May 14, 1996Hydroseed Manufacturing, IncorporatedRake attachment with scarifying teeth for a skid steer
US7695214 *May 7, 2007Apr 13, 2010Robert MailandAsphalt pavement remover
US20080279628 *May 7, 2007Nov 13, 2008Robert MailandAsphalt pavement remover
US20140182172 *Mar 14, 2014Jul 3, 2014Brandon L. RitterRock removal skid steer attachment
U.S. Classification37/301, 172/477, 172/744, 172/777, 172/267
International ClassificationE02F5/32, E02F5/00
Cooperative ClassificationE02F5/32
European ClassificationE02F5/32