US1668850A - Saw attachment for the ends of moldboards - Google Patents

Description

May 8, 1928. 1,668,850

J. M. LARSH SAW ATTACHMENT FOR THE ENDS 0F MOLDBOARDS Filed Mayl3. 1926 2 Sheets-Sheet 1 O 5 n 8 6 l J. M. LARSH SAW ATTACHMENT FDR THE ENDS OF MOLDBOARDS Filed May 16. 1926 2 Sheets-Sheet 2 Patented May 8, v

v v 1,668,850 v UNITED STATES (PATENT OFFICE.

son I. m, or nmuiuroms,

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AND ONE-FOURTH T0 ULYSSBB our! UAW ATTACHIIN'I' 1'03 TEE B NDB 01' HOLDBOABDS.

Appllettlol fled In! 18,

This invention pertains particularly to the mold board for road making machines, and an object of the invention is to rovide means for lengthening one or both of its ends in order to increase the operative reach or area of operation of the machine.

Second, to provide such an extension means which is capable of working attachment in substantially the same plane thereby making a longer mold board, or of attachment at an angle more nearly parallel with the line of travel of the machine to act as a plow.

Third, to provide such an extension means which is capable of a swinging adjustment in a vertical plane at different angles to fodrm the sloping sides of a ditch at the roads1 e.

Fourth. to provide such an extension with a serrated lower edge, which, when the extension is set substantially parallel with the direction of travel of the machine will act as a cutter of roots and brush. I

I accomplish the above, and other minor objects which will hereafter appear, by the mechanism illustrated in the accompanying drawings, in which- Fig. 1, is a top plan view, more or less diagrammatic in its unessential parts, of a road making machine showing a mold board with my invention applied at an angle to.

both of its ends.

Fig. 2, is a rear elevation of my improved attachment for the right end of the mold board, looking in the direction of the arrow in Fig. 3, and v Fig. 3, is a horizontal section on the line 3-3 of Fig. 2. I

Like characters of reference indicate like 1 parts in the several views of the drawings.

The front wheels 1, are preferably mounted on stubs which are connected with an axle 2 by vertical pivots 3, whereby the usual fifth wheel attachment of the front axle making a wide radius in turning the machine is obviated and a turn of the front wheels on pivot 3 in a small space is secured.

The rear wheels-4 are mounted on an axle 5 and the two axles are connected by a reach 6. the body of which is bifurcated to more adequately support a ring 7 which" aids in the attachment and control of a mold board 8, the middle or body-part of which is 1988. lerial No. 108,755.

of any usual and suitable construction. The mold board is swin 'n 1y attached by a vertical pin 9, aroun w 1ch it has swin horizontal adjustment by any usual and suitable means, not shown.

Attached to both ends of the mold board 8, are extensions 10, which, aside from bein in reverse, are alike in form and manner 0 attachment so that a description of one will be understoodas ap lying to both.

The normal lengt of the mold board 8 is such as to just clear the front and rear wheels in its swinging adjustments, and be cause it is frequently desirable to extend this length to reach further in the same direction, or vertically oblique to the bottom of the mold board to give a required slope to a roadside bank, or in other directions for INDIANA, ASSIGNOB 01' ONE-BALI TO. M I I. TAYLOR, OF INDIANAPOLIS, INDIANA,

other reasons, I provide an extension. This comprises a plate 11, preferably of steel having an inner end of ap roximately the same width as the vertical width of the mold board. The outer end of this plate ma be of the same width but preferably, an as here shown, it is much narrower, thereby forming an oblique lower edge to which a serrated cutter blade 12 is bolted, as shown best in Fig. 2. The outer vertical edge 13 of this plate is sharpened and its opposite inner edge is preferably beveled, as shown in Fig. 3, to increase its bearing against a mold board splice plate 14, in the position of most general use of the extension.

The splice plate 14, is secured to the end of the mold board by removable bolts 15, here shown as three in number, having beveled screw heads that are countersunk in the splice plate.

The splice plate has an outer row of boltholes, here shown as three in number, for the attachment of a like number of eye bolts, 16. The splice plates are locked between a pair of nuts '17 and 18, and the bolts are threaded their entire length to afford a range of adjustment in the distance of the eyes from the splice plate in varying the angular relation of plates 11 and 14 to each other.

Riveted to plate 11, at suitable places, are plates 19, each having a pair of perforated ears between which an eye of a corresponding one of the eye-bolts 16, is bolted.

Additional bolt-holes 20 are formed in the plate 11 on lines that are concentric with for the lower eyebolt 16, whereby, by bringing said radial lines into register with the holes for bolts 16, the plate 11 may be bolted at the corresponding difierent angles by using common bolts in the registering holes.

When it is desired to use the plate 11 m a plane parallel with the mold board, as shown by dotted lines in Fig. 3, the plate 11 1s swung on its eye-bolts to that position and its outer end is held from swinging further back by substituting bolts of suitable length for the bolt 15, and seating their heads in suitable holes 22 in the plate 11.

The operation of my invention is illustrated in Fig. 1, wherein the reach, rear wheels, and mold board without end extension are shown in dotted lines in well known o erative positions in which it will be noted t at the work of the mold board is confined within an area outlined by the four wheels of the machine.

But should it be desired to operate upon a considerably wider area, the machine is adjusted by the usual mechanism provided for that purpose to bring the right rear wheel in line with the bottom of the ditch to be made, and the extension plates 11, are bolted to the ends of the mold board, with the mold board and the extension plates a proximately in the an ular positions relatlve to the direction 0 travel of" the machine as shown in full lines. Thus arranged, the extension 11 will act as a plow to dig into and start the dirt which will be carried over and back by I the mold board and discharged at the end of the board as a scraper instead of a plow.

of the plate extension 11 at the left.

' Shouldthe mold board he set much nearer transversely of the machine than shown in full lines in Fig. 1, it will not move the dirt back but will cause it to accumulate in front Much of the strain on the mold boar and extension may be relieved by connecting the extension with the reach b means of a chain 25, as shown in Fig. 1. ttention is called to the advantage of a short turn front wheel in the above operations which allow the dirt to move close to the wheel without being so thrown as to interfere with the proper functioning of the wheels.

A very important adaptability of my invention occurs in the use of-the serrated edge of extension 11 as a saw to cut off roots of trees and tangled vegetable growths that the makers of roads frequently encounter. To make the saw function best its length should be parallel with the direction of travel of the machine. To secure this the mold board is moved to the position shown by dotted lines 8, and the angle of plate 11 is changed as shown to present its saw teeth on blade 12 in a line straight ahead.

The teeth on lade 12 are sharpened as shown and. may be set to widen its kerf in the usual manner, and I have shown the innor edges of the teeth curved upwardly to reduce their clogging tendency. While I have shown one preferred form of apparatus, it is to be understood that-I contemplate such changes as come within the spirit and scope of the accompanying claims.

I claim- 1. In a road making machine, the combination with a mold board, of a serrated plate acting as a saw for one or both ends of the mold board adjustable in its angular relation therewith, the teeth of said late having concaved inner edges and the iaces of the plate being straight in all directions.

2. In a road making machine, the combination with a mold board, of a cutting attachment for one or both ends of the mold board, said attachment having teeth acting as a saw, the faces of the attachment being strai ht in all directions.

3. %n a road making machine, the combination with a mold board, of a cutting attachment for one or both ends of the mold board, adjustable in its angular relation therewith, said attachment having teeth acting as a saw, the faces of the attachment being straight in all directions.

4. In a road making machine, the combination with a mold board, of a saw-toothe plate for one or both ends of the mold board, adjustable there 'th to vary the vertical angle of the bottom line of the plate with a horizontal plane and means for causing the teeth of a plate to saw in a single kerf all faces of the plate being straight in every direction.

5.. In a road making machine, nation with a mold board, and a cutting law on a plate having straight sides, of a splice plate secured to and between the mold board .and saw.

'6. Ina road making machine, the combination of a draw bar, a mold board, a serrated plate having all sides straight in every direction hinged toan end of the mold board and acting as a saw, and a tie from the saw to the draw bar.

7. In a road making nation of a draw bar, a mold board, a serrated plate having all sides straight in every direction secured to an end of the mold board and acting as a saw, and means for tying the saw to the draw bar.

8. In a road making machine, board a serrated plate havin all sides straight in every direction hinged to the end of the mold board and acting as a saw, means for locking the serrated plate against any swinging ad ustment.

9. In a road making board a serrated late acting as a saw, said plate having all si es straight in every direction, means for securing the plate to the board said mean; being adapted to winmachine, the combi a mold the combiingly adjust the platein a vertical plane, all sides straight in every direction, means and means for holding a givenadjustment. for changing the angular relation of their 10. In a road making machine, a mold lower edges, and means for retaining all of 10 board, a serrated plate acting as a saw, their adjustments. 5 means for hinging the plate to the mold In testimony whereof I afiix my signaboard' for changes in angular relations of. ture. their planes to each other, said plate having JOHN M. LARSH.

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