US1037755A - Scarifier. - Google Patents

Description

W. A. GILLETTE.

SCARIFIER.

APPLIGATION FILED MAY 1, 1911.

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SCARIFIER.

A1 PLmAToN FILED MAY1,1911.

1,037,755. Y Patented sept.3,1912.

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WALTER A. GILLETTE, 0F. LOS ANGELES, CALIFORNIA, ASSIGNOR TO PETROLITHIC PAVEMENT COMPANY, OF LOS ANGELES, CALIFORNIA.

SCARIFIER.

Specification of Letters Patent.

Patented Sept. 3, 1912.

Application led May 1, 1911. Serial No. 624,498.

To all whom t may concern.'

Be it known that I, WALTER A. GILLETTE, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles and State of California, have invented certain new and useful Improvements in Scariliers; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in scari'fiers and particularly to a gang scarier which is especially designed for tearing up hard roadways, though not so limite The object of the invention is to provide a scariier having a plurality of scariling spikes arranged in wedge formation and secured to an adjustable truck frame either end of which may be independently adjusted to permit the scarifying spikes to penetrate the ground at Varying depths and angles.

A" further object of the invention is to build such a machine of rigid and durable construction to withstand severe usage, and which is easy to operate.

With the above and other objects in View as will hereinafter appear, the invention consists in? certain combinations and arrangements of the parts which will be fully described and the novel features thereof particularly pointed out in the appended claims.

The preferred embodiment of the invention is illustrated in the accompanying drawings, in which like characters of reference indicate corresponding parts.

Figure 1 is a side elevation of a scariier constructed in accordance with my invention, Fig. 2 is a plan view of same, Fig. 3 is a side elevation on an enlarged scale of the front end of the machine, certain portions being broken away to more clearly show the construction, and Fig. 4 is a sectional view taken on line 4-4 of Fig- 3.

, In the drawin s the frame of the ma.- chine is com se of a pair of longitudifnally extendlng metal beams 1 and from f the forward end of each extends a backwardly diverging beam 2, to which is secured as at 3 a longitudinal beam 4 arranged 1n` spaced parallel relation on the outside of the beam 1, and said beams are joined together by a plurality of transverse beams 5, 6, 7, and 8.

Rigidly secured to the under side of the beams 5 and 6 'and central of the forward end of the frame is a scarifying spike 9 formed at its rear end with a downwardly curved portion 10 which projects forwardly and is inclined downwardly, and carries al detachable blade 11 havingboth its upper and lower edges beveled in order that when one edge becomes unserviceable the other may be substituted. Faster-.ed to the transverse beams 6 and 7 and arranged on the outside of the scarifying spike 9 are similar scarifying spikes 12, and carried by the transverse beams 7 and 8 outwardly from the scarifying spikes 12 are other similar scarifying spikes 13, Byv thus arranging the scarifying spikes in wedge formation, less pulling power is required as the forward scarifying spike cuts a furrow in advance thereby leaving loosened ground on the 'inner sideof the blades of the other scarifying spikes.

The rear end of the frame, is supported by wheels 14 arranged outside of the frame and each wheel is rotatably mounted on the crank arm 15 of a crank 16, journaled in bearings 17 which are xed to the under sides of the beams 1 and 4. Mounted on each crank 16 between said bearings is a toothed sector 18 which is engaged by a worm 19 on an inclined shaft 20 journaled in the ends of a box 2l'partially inclosing the worm and carried-by brackets l22 pro'- jecting upwardly from theV beams 1 and 4. Near the upper end of the inclined shaft 20 is a bevel gear 23 which meshes with the bevel pinion 24 rotatably mounted on a shorthorizontal shaft 25 supported by inclined bars 26 rigidly secured to the beams 1 and 4 and suitably braced as at 27. The upper end of the inclined shaft 20 is journaled in a crossbar 28 connected to the bars 26. A hand-wheel 29 is fixed to each pinion 24`which is manually operated to adjust the rear end of the frame.

The front end of the frame is pivotally and adjustably supported on wheels in the following manner. The front wheels 30,

which are of less diameter than the rear wheels 14, are rotatably mounted on an axle 3l having an enlarged central portion 32 to which is pivotally connected as at 33 a forked piece 34 having a vertical trunnion 35 which is journaled in a block 36 carried by a pair of uprights 37 joined together at their upper en s by a crosspece 38. Pivotally connected to each upright 37 .at 39 is ra link 40, the other ends of which are pivotally connected at 41 to the upper ends of forwardly inclined bars 42 projecting from the beams 1. A brace 43 extends from each inclined bar to the beam.

Passing through beam 1 of the frame is a cross-shaft 44 on which is mounted a toothed sector 45 having rigidly secured to each side around the worm 50 and the lower end of said inclined shaft 49 yis journaled in its end.l Near the upper end of the inclined' shaft 49 is a bevel gear 53 which is engaged by a pinion 54 rotatably mounted on a cross shaft 55 supported by brackets formed by inclined bars 56 and braces 57 connected to the beam 1. A plate 58 is secured to the shaft 55 by clips 59 and forms a bearing for the upper end of the inclined shaft 49. A hand-wheel 60 is fixed to the pinion 54 and the .forward end of the frame Iis adjusted -in a similar manner-,as the rear end by turning same.

Projecting forwardly from the front ends of the longitudinal beams 1 is a yoke 61 to which is pivotally connected a tongue 62 for drawing and guiding the machine, Secured to the underside of the tongue is a rod. 66 extending longitudinally therewith, on which rod is slidably mounted the head 67 of a forked bracing member 63 having its legs pivotally connected to members 64 fixed to the front axle 31. By so connecting the bracing member to the tongue, lateral movement of the tongue is permitted, and the frame of the machine is adjustable on the front wheels.

It is apparent from the foregoing that the rear end of the frame may be adjusted by operating the rear hand-wheels which will rotate the toothed sectors and turn the cranks on which the rear wheels are mounted. By rotating the forward hand-wheel the toothed sector will be rotated on its shaft which is carried by the frame and the pivota'l joints 47 and 39 will follow the arcs 65 as shown in Fig. 3.

Although the elements set forth and described are fully adapted tol accomplish the purposes for which they are intended, it is to be understood that slight changes in the form, proportion and minor details of'con- `struction may be resorted to without sacricing any of the advantages or departing from the spirit of my invention.

Having fully described my invention, what I claim is 1. In a scarifier, the combination of a frame, scarifying spikes depending from the frame, means for adjustably supporting the rea-r end of the frame, a front axle, wheels mounted on the axle, a trunnion projecting from the axle, a block for thel trunnion, uprights secured to the block, a toothed sector rotatably mounted at the forward end of the frame, means pivotally connecting the sector to the uprights, a link connecting each upright to the frame, and means for rotating the sector, substantially as described.

2. In a scarifier, the combination of a frame, scarifying spikes depending from the frame, means for adjustably supporting the rear end of the frame, a front axle, wheels mounted on the axle, a trunnion projecting from the axle, a block forthe trunnion, uprights secured to the block, a toothed sector rotatably mounted at the forward end of the frame, means pivotallv connecting the sector to the uprights, a link connecting each upright to the frame, a. worm in mesh with the sector, a shaft fixed to the worm, a box supported from the frame and surroundlng the worin, a gear wheel on the shaft, a bracket rojecting from the frame,4 a s econd sha t supported by the bracket, a pmion rotatably mount-ed on the second shaft and engaging the gear wheel, a hand-wheel secured to the pinion, and a plate attached to the second shaft, the upper end of the first shaft being journaled in said plate, substantially as described.

3. In a scarifier, the combination of a frame, scarifying spikes depending from the frame,.means for adjustably supporting the rear end of the frame, a front axle, wheels mounted on the axle, a trunnion projecting from the axle, a block for the trunnion, means pivot-all connecting the block to the forward end o the frame, means for adjusting the forward end of the frame with relation to the block and holding it in locked position, a tongue projecting from the forward end of the frame, and means for bracing the tongue from said axle, substantially as describe 4. In a scarifier, the combination of a frame, scarifying spikes depending from the frame, means for adjustably supportin the rear end of the frame, a front axle, -w eels mounted on the axle, a trunnionprojecting from the axle, a block for the trunnion,

means pivotally connect-ing the block to the said axle and slidablyconnected to the bar, forward end of the frame, means for adsubstantially as described. v 10 justing the forward end of `the frame with In testimony whereof, I aix my signarelation to the block and holding it in ture, in presence of two witnesses.

locked position, a tongue pivoted to the for-` WALTER A. GILLETTE. Ward end of the frame and capable of lat- Witnesses: eral movement, a bar fixed to the/tongue'| K. F. PosTLE,

end bracing members pivot-ally connected to EDYTH PALMER.'

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