US344205A - And frederick m - Google Patents

Description

(No Model.)

G. B. SHARP, Jr. 8c P. M. 8v S. PENlIOCK.`

ROAD GRADER.

No. 344,205. Patented June Z2, 1886.

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UNITED STATES PATENT OFFICE.

GEORGE B. SHARP, JR., OF DES MOINES, IOVA, AND FREDERICK M. PEN- N OOK AND SAMUEL PENN OOK, OF KENN ETT SQUARE, PA., ASSIGNORS TO THE AMERICAN ROAD MACHINE COMPANY, OF KENNETT SQUARE, PA.

ROAD-GRADER.

SPECIFICATION forming part of Letters Patent No. 344,205, dated June 22, 1886.

Serial No. 150,187. (No model.)

To all whom it may concern:

Be it known that we, GEORGE B. SHARP, J r; of Des Moines, Iowa, and FREDERICK M. PEN- NocK and SAMUEL PENNooK, both of Kennett Square, in the county of Chester and State of Pennsylvania, all citizens of the United States, have invented certain new and useful Improvements in Road-Graders, of which the following is a full, clear, and exact description, -refer- 1o ence being had to the accompanying drawings,

of which- Figure l is a plan view; Fig. 2, a front perspective View; Fig. 3, a det-ail of draft-connection. Fig. 4 is a back View of the rear end of l5 the scraper-bar, showing the brace-plate hereinafter referred to.

Our invention relates to that class of road grading or scraping machines in which a vertically-adjustable scraper is suspended diagonally from atwo-wheel truck; and its object is to improve the construction and efficiency of such machines.

It consists in certain improvements in the scraperbar draft attachment, whereby the draft comes directly upon the scrapcr-bar,and the Weight and jar in a large measure taken oft' the horses when the machine is at work.

The invention also consists in certain improved minor details of construction, all as 3o hereinafter described,and specifically set forth in the claims.

Referring to the annexed drawings, A marks the usual supporting-frame,mounted upon the axle 'b of the machine.

S is the diagonal scraper, which is suspended from the adjusting-levers Z by straps or'rods r. These levers are pivoted on uprights u u,that are bolted to the diagonal frame-piece a, and are worked to elevate or depress the scraper 4o at either or both ends by the operator, who

stands upon the platform p. The uprights uu are extended down back of the scraper-bar, so as to serve as a support or abutment for the latter. The end of the tongue t is bolted to the axle, and, usually, also to the bar a of frame A, the point of attachment thereof to the axle being preferably in advance of the middle of the scraper. This is done in order to equalize the draft or strain, which comes mainly upon the leading end of the scraper 5o when at work.

It has been usual in road-Scrapers of the class referred to to attach the tongue directly to the scraper-bar. Instead of that construetion,wc attach the tongue to the axle or truck of the machine, and make the draft attachment with the scraper-bar in the following manner: B B are two strong beams attached to the scraper near the ends thereof, respectively, and converging forward, their free ex- 6e tremities being bent or set parallel, but at some distance apart below the tongue, as shown. Th rough these two parallel extensions pass bolts c o', between which a space, ar, is left for the reception of the clevisdof the double-tree 65, e, and for the reception also of the forward limb of a link or guide, f, that is bolted to the tongue. rlhe front one of the rods r,pivoted to the vertically-adjusting lever, is connected to the beam B, as seen in Figs. l and 2.

In order to obviate the tendency of the scraper-bar to sag or draw down at the front, we connect the forward end of beam B with said rod by a bar, g, and as a means to prevent the twisting of the rear end of the scraper caused by the severe strain upon the leading end of the latter when doing work, we secure to the back of the scraper, near its rear end, a bent arm, 71whose free end extends over the back ofthe upright u, which, as previously stated, is firmly fastened to the framework of the machine.

In order to avoid the wearing away of the upright,which is usually of wood, we secure to the latter a strip, k, of iron or other metal. It will thus be seen that at the same time that the scraperis prevented from twisting around its vertical movement is not interfered with.

The operation of the machine will be readily understood from the construction shown and described. The draft is directly upon the scraper, and thelatter is stayed both longitudinally and vertically by the link f,which allows the scraper to be raised and depressed, while the movement of the machine as awhole is stayed laterally by the tongue to which the team is connected in the usual manner.

Having thus described our invention, we

claim as new and desire to secure by Letters Pateutv l. In a road-grader of the class recited, the combination of the diagonal scraper, the con- 5 verging draft-bars attached directly thereto and connected together at their free ends, the tongue secured to thetrnek or axle, and the link f, secured to the tongue nud loosely oonneetedv with seid draft-hers, in themanner io shown, together with means for raising and lowering the scraper, all substantially as and for the purpose set forth. v 2. In combination with the scraper, the voir, verging draft-bars B B', attached thereto, the

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