US741768A - Road-grading machine. - Google Patents

Description

PATENTBD OCT. zo; `190s.

H@ K. GLBMoNs. ROAD'GRADING MGHINE. APPLICATION FILED MAR. 24. 1903.

N0 MODEL.

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PATEN'I'ED. OCT. 20, 1903.

i H. K. CLEMoNs. ROAD GRADING MACHINE.` APPLIOATION FILED MAB. 24. 1903.

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PATENTED OCT.` 20, 1903.

H'. K. GLBMONS.

ROAD GRADING MACHINE.

APPL'IoATloN FILED MAR. 24. 190s. No MODEL. a sHfgBTs-snm'r s.

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NITED STATESl i 1atented ctober 20, 1903.

5 PATENT OFFICE.

" ROAD-GRADING MACHINE.

SPECIFICATION forming part of Letters Patent No. 741,768, dated-October 20, 1903.

Application filed March 24, 1903.

ToaZZ whom it may concern,.-

-Be it known that I, HARRY K; CLnMoNs, a citizen of the United States, residing at St. Paul, in the county of Ramsey and State of Minnesota, have invented 4certain new and useful Improvements in Road-,Grading Machines; and I do hereby declare thefollowing to be af ull, clear, and exact description of the invention, such as Will enablefothers skilled in the art to whichit appertains to make and My invention has for its object to provide an improved road-grading machine; and to this end it consists of the novel devices and combinations of devices hereinafter described, and defined in the claims.

The invention is illustrated in the accom panying drawings, wherein like characters indicate like parts throughout the several views.

Figure 1 is a plan view, with some parts broken away, illustrating the improved roadgrading machine. Fig. 2 is a right-side elevation of the same. Fig. 3 is a transverse vertical section on the irregular line mg of Fig. 1. Fig. 4 is a detail in vertical section on the Fig. 5 is a detail in verticalsection on thevline 005 fm5 of Fig. l, some parts being removed and some being indicated by dotted lines. Fig. 6 is a detail in vertical section on the line x6 m6 of Fig. 1, and Fig. 7 is a detail in section on the line m7 x7 of Fig. 1.

The main frame 1 of the machine is of rectangular oblong form and, as is usual, is provided at its forward portion with the seat 2 and at its rear end with an operators platform 3. The forward truck 4 is pivotally connected to the forward end of the main frame 1 in the usual or any suitable way, but,` as shown, is directly pivoted to a depending bracket 5 at the forward end of said main frame. The rear truck is made up of a pair of wheels 6 and a long axle 7, which axle is mounted for pivotal and endwise or transverse movements in suitable guides formed between the rear ends of the side bars of the main frame 1 and depending keeper-straps 8, secured to the side',bars of said frame. To the long axle 7 is pivoted the rear ends of a pair of parallel links 9. The forward end of oneof the links 9 is pivotally attached to a depending arm 10, rigidly secured, as shown,

.main frame 1.

forward and rearward ends.

Serial No. 149,263. (No model.)

to the left-hand side bar of the main frame 1, as best shown in Fig. 5. The forward end of the other link 9-to wit, as shown, the right-hand linkis pivotall y connected to the depending end of a hand-actuated lever 11, which lever is pivoted at its intermediate portion to the right-hand side bar of the This hand-lever 1l coperates with a notched latch-segment 12, rigidly secured on the adjacent bar of the main frame l, as best shown in Figs. 1 and 2. The

said latch-segment 12 serves to hold the lever l1 in any one of its several positions.

To shift the long rear axle 7 endwise or transversely of the machine, it is connected by a link 13 to an arm 14, rigidly secured to the gear 15, suitably mounted in the bearing 16 of the platform 3, as best shown in Figs. 1 and 4. The gear 15 meshes with the pinion 17, the shaft 17a of which is journaled in the bearing 16, is squared at its upper end, and is provided with a notched latch-wheel 18, with which cooperates afoot-released latch 19, pivoted on the platform 3. The latch 19, acting on the latch-Wheel 18 and through the connect-ions just described, holds the axle 7 against endwise movements transversely of the machine.

The supplemental frame 20, which carries the scraper-blade 21, is, as shown, made up of a pair of iron bars that are united at their The forward end of the supplemental frame 2O is advisV ably pivotally connected to the depending front end bracket 5 of the main frame by an ordinaryyielding coupling 22. blade 21 is, as shown, rigidly connected to an annular turn-table 23, having the diametrical bar 211, by means of irmtallic straps or brackets 25. This turn-table 23 is rotatively mounted in segmental bearings 26 and 27, secured to the bar of the supplemental frame 20.

To raise and lower the rear end of the supplemental frame 2O and with it the scraperblade 2l, a pair of rock-shafts 28 are mounted in suitable bearings 29 on the sides of the primary frame 1 and are provided with laterally-projecting arms 28', connected by links The scraper-- ICO 30 to outwardly-projecting brackets 31, that g are rigidly connected both to the segmental turn-table bearing 26 and to the side bars of the supplemental frame 20, as best shown in Figs. l and 3. Rigidly secured to the rear ends of the rock-shafts 28 are worm-gears 32, that mesh with worms 33, suitably journaled in projections 34 of the rear bearings 29 and provided with large hand-wheels 35, adapted to be reached by the operator standing on the platform 3. As is evident, the supplemental franxe and scraper-blade may be raised and lowered through the connections described by the manipulations of the handwheels 35.

The turn-table 23 is provided with marginal perforations 36, with one or the other of which engages a spring-pressed lock-dog 37, which is pivoted to the rear segmental bearing 26, as best show-n in Figs. 1 and 6. This lock-dog 37 is adapted to be released by foot-pressure applied to a foot-piece 38, pivoted to a projection from a bearing-block 39, rigidly secured between the rear ends of the bars of the supplemental frame 20, as best shown in Fig. 6. This foot-piece 38 is connected by a light rod or wire 40 to the lockdog 37. A short vertical shaft 41, having a squared upper end, is loosely journaled in the bearing-block 39 of the supplemental frame and is provided with a diametrically projecting head 42, the opposite ends of which are connected by parallel links orrods 43 to the opposite ends of a similar head 44, rigidly secured to the bar 24 of the turn-table 23 and projecting diametrically across the axis of the turn-table, as best shown in Fig. 2. As is evident, when the lock 37 is released, as above described, and the shaft 41 is oscillated the turn-table 23 may be oscillated, so as to vary the angle of the scraperblade and to reverse the angle thereof with respect to the travel of the machine. Either the shaft 41, just noted, or the shaft 17, previously described, may be oscillated by means of a very large key-stem 45, which has a socket that will fit the squared upper ends of the said shafts. This key 45 is indicated by dotted lines in Fig. 4 and by both dotted and full lines in Figs. 1 and 2.

To adjust the swinging rear end ofthe supplemental frame, and With it the scraperblade, transversely of the machine, the following connections have been provided: A pair of transverse bars 46 and 47 connect the side bar of the main frame 1 at their intermediate portions-to wit, as shown, back of the seat 2 and over the turn-table 23. The upper edge of the bar 46 is notched, and mounted to slide over the same is a shifting block 48, the depending portion of which is connected by a rod 49 to one of the brackets 31 of the supplemental frame 20. A long lever 50 is loosely pivoted to the top of the shifting block 48. The forward end of this lever 50 is adapted to be engaged with any one of several notches 51 formed in the lower edge of the transverse bar 47. When the said lever is thus engaged with one of the notches 51, the bar 47 serves as a fulcrum or base of reaction for the lever 50 in its action of well understood to require comment.

shifting the block 48, and hence the supplemental frame and scraper-blade, transversely of the machine. The shifting block 48 is adapted to be locked to the bar 46 by a spring-pressed lock-plunger 52, mounted in a bearing 53 of said block, which plunger engages with one or the other of the notches of the said bar 46, as best shown in Fig. 7. The lock-plunger 52 is adapted to be released by a handpiece 54, pivoted to the rear end of the lever 50 and connected by a wire 55 to said plunger.

The purposes of the adjustments of the supplemental frame' and scraper-blade are too The purposes of adjusting the long rear axle endwise or transversely of the machine and also pivotally are also Well understood, but may be brieiiy stated, as follows: The endwise or transverse adjustment of the said long rear axle is necessaryin order to bring the innermost Wheel always back of the scraper, so that it will run on smooth or scraped ground. This adjustment of the axle in the machine described is, as already stated, accomplished by applying the key 45 to the shaft 17, and thereby oscillating the arm 14 and causing the axle to move endwise. When the axle is thus moved endwise, the parallel links 9 cause it to maintain always the same angle to the main frame of the machine at which it happens to be set. The said axle is adapted to be moved pivotally or, in other words, set at different angles with respect to the main frame of the machine by the movements of the hand-lever11,which movements of said hand-lever carry the right-hand link 9 forward or rearward, according to the movemeut of said lever. The above manner of mounting and adjusting the rear axle of the machineis considered one of the primary features of this invention. The said means are extremely efficient and simple, provide the freest kind of a movement for the adjustment of said axle, and involve no parts which are liable to get out ot' order or to wear quickly.

It will of course be understood that the device described is capable of modification within the scope of my invention as herein set forth and claimed.

As has been made clear above, the pivotal or angular movement of the long rear axle is accomplishedby adjusting endwise one of the parallel links 9. From a broad point of view this endwise adjustment of the link might be accomplished in various different ways, and I would therefore consider it within the scope of my invention, for example, to make said link longitudinally extensible or to provide an adjustable connection between the same and the axle instead of between the link and the main frame.

What I claim, and desire to secure by Letters Patent of the United States, is as follows:

1. A road-machine having a transverselyadjustable rear axle, and a pair of parallel IIC links connecting the same to the frame of the machine, substantially as described.

2. A road-machine having a transverselyadjustable rear axle, a pair of parallel links connecting the same to the frame of the machine, and means for adjusting said axle transversely of the machine and holding the same where set, substantially as described.

3. In a road-machine, the combination with a transversely-adjustable rear axle, of a pair of parallel links connecting the same to the machine-frame, an oscillating arm on the machine-frame, means for moving the said arm and locking the same in different positions, and a link connecting the said arm to said axle, for imparting transverse adjustments thereto, substantially as described.

4. In a road-machine, the combination with a transversely-adjustable rear axle, of the parallel links connecting the same to the frame of the machine, the intermeshing gears 15 and 17 mounted on the machine-frame, the arm 14 carried by said gear l5, the link 13 connecting said arm to said axle, the lockwheel 18 on the shaft of the said gear 17, and the foot-released latch 19 coperating with said lock-wheel 18, substantially as described.

5. A road-machine having a transverse and pivotally-adjustable rear axle, and a pair of parallel links connecting the same to the machine-frame, one of which links is adjustable to impart a pivotal movement to said axle, substantially as described. l

6. A road-machine having a transversely and pivotally adjustable rear axle, a lever carried by the machineframe, and a pair of parallel links pivotally connected to said rear axle and to the machine-frame, one of said links being directly connected to said lever, substantially as described.

7. lA road-machine having a transversely and pivotally adjustable rear axle, a pair of parallel links connecting said axle to the machine-frame, one of which links is adjustable to impart pivotal adjustments to said rear axle, and means for adjusting said axle transversely of the machine and holding the same in its set adj ustment,substantial1y as described.

8. In a road-machine, the combination with a transversely and pivotally adjustable rear axle, of a cooperating lever and latch segment carried by the machine-frame, a pair of parallel links pivotally connected to said axle-at their rear ends, the forward end of one of the links being connected to the said lever and the forward end of the other link being connected to a part rigid on the machine-frame, an oscillating arm, means for holding said arm in different adjustments, and a link connecting the said arm to said axle, substantially as described.

9. In a road-machine, the combination with a primary and a supplemental frame,of means for adjusting the latter laterally with respect to the former, comprising a transverse bar on the main frame, a sliding block on said bar `having a connection to said supplemental frame, and a lever pivoted to said sliding block and fulcrumed to a part carried by the main frame, substantially as described.

10. In a roadmachine, the combination with the main frame 1 and supplemental frame 20, of the notch-bars 46 and 47, secured to said -main frame, the sliding block 48,work ing on said bar 46, the link 49 connecting said block to a part rigid on the supplemental frame, the lever 50 pivoted to said block 48 and fulcrumed to said bar 47, and a latch car` ried by said block 48 and engageable with the notches of said bar 46, substantially as described.

ll. In a roadmachine, the combination with a turn-table and a scraper-blade carried thereby, of means for oscillating said turntable, comprising a dia1netricallyextended head secured to said turn-table and crossing the axis thereof, and an oscillating shaft having a diametrically-adjusted head, and a pair of parallel rods, connecting the corresponding ends of the said two heads, substantially as described.

12. In a road-machine, the combination with a primary and supplemental frame, of a segmental turn- table guide 26 and 27, secured to the supplemental frame, the turn-table mounted on said guides, a scraper-blade secured to said turn-table, and means for rais ing and lowering said supplemental frame and parts carried thereby, said means comprising the oscillating shafts 28 mounted on the main frame and provided with arms 28', the projecting brackets 3l, rigidly connected to the bars of said supplemental frame and to the segmental guide 26 and tying the same together, and the links 30 connecting said brackets 3l to said arms 28, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

HARRY K. oLEMoNs.

Witnesses:

GENEVIEVE HIRSCH, F. D. MERCHANT.

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