US109768A - Improvement in road-scrapers - Google Patents

Description

bien effin DAVID L. SnnrAnD, or roxnonouen, MASSACHUSETTS.

Letters Patent No. 109,768, dated November 29, 187B.

IMPROVEMENT IN RO'AD"SCRAPERS.

The Schedule referred to in these Letters Patent and making part ol' the same.

To all whom it may concern:

Be it known that I, DAvID L'. SHEPARD, of Foxf borough, in the county of Norfolk and State of Massachusetts,.have invented a Machine for Grading and Scraping Roads, of which the following is a full, clear, and exact description, reference being had to the accompanying drawing making a part of this specification, in which- Figure l .is a perspective view, representing my machine for grading and scraping roads. Y

Figure 2 is a side elevation.

Figure 3, detail'to be referred to.

'To provide a convenient, expeditious, and economical means for making aud grading new roads, and for scraping and smoothing over old roads to be repaired, is the object of my invention, which consists in an organized machine in which a scraper is employed for entering the ground and for guiding and disposing the material in proper quantities upon the road at the several points to form the inclination required.

And my invention also consists in certain detailsof mechanism by which the scraper is'operated and ad'- justed to any inclination of grade determined on.

To enable others skillediu the art to understand and use my invention, I will proceed to describe the manner in which I have carried it out.

In the said drawingt A is the framework, therear end of which is lsupported on the axle B of apar of wheels, O, while the front of the frame-work rests on a bifurcatedarimD,

through the lower end of which passes the axle E ofv` a single wheel, F, the arm being free to swivel v-o'r-re-l volve around within the frame-work, in 4order that the truck may turn short around. s vGr is the draft pole o r tongue, secured to the front of the frame-work, but the pole or tongue may be directly secured to the arm D, so as vto enable the truck to turn more positively.

His a scraper, of the form shown, that is to say, having the land-side of suiiicient length to prevent itsl being thrown out of the direct line of draft when in'operation, with the forward end tted to the point 6, and shaped as shown in g. 2,.and with its scraping surface suitably' curved above its cutting edge, 5, to

cause it to carry forward and remove the dirt.

This scraper is rigidly secured at its forward end to the beam l, which beamA is supported by a chain, a, secured at its upper end to a screw-bolt passing through the frame-work.

The scraper, at or near its rear end, is rigidly secured to the brace J of the beam I, and this brace is supported by` the rod b passing through a slotted lower edge, 5, may be inclined to any angle to conform to the grade required; for instance, where a steep pitch is to be given the` road-bed the .rod b may be raised, and with it the rear portion of the scraper, by turning the screw-nut j, or the front portion ot' the scraper may be lowered by' turning the Vnut e, or both nuts may be operated to perform this adjustment.

The 'upper forward ,end of the beam I is provided with a seriesof holesgi, and fits loosely-between the frame-.work and a plate, K, also provided with holes, g, of a size corresponding to those in the forward end of the beannby which construction the movements required in giving the proper inclination to the edge 5 are free to be made,andthe point 6 of the scraper may be raised or lowered bysimply changing the p0- sition of a pin, h, whichk enters the holes i, and those in the forward end of the beam I.

lThe line from e', a little in the rear of the point 6, to the heel j of the scraper, is intended4 to be always keptin a horizontal plane, which may readily be done .byfmeans of the adjustments above described, and

this line, ordinarily termed the land-side, is of considerable length, so that an extended bearing surface lmaybe'provided to prevent, as far as possible, the

scrapel-f1'om being thrown out of the direct linc of This brake-'rod is connected by a series of levers,

k l m n 0,1with a curved spring, N, fig. 3, one end oi' which is secured to al pin projecting from the framework, while the other end ofthe spring .is allowed to Vslidefreely within a guide,.`p.

" lheobject of the spring and compound leverage is ,to enable the operator at bis option to apply an elas tie or yielding pressure on the scraper, so to admit of it-slrising when it comes -in .contact with unyielding obstacles.

The plate c is slotted so as to allow the scraper to be moved-laterally out and in by operating a shipperlever, O, for the purpose of grading or scraping a wider or narrower portion of the road, according to the will of the operator.

'lhe scraper may be instantly raised -from the ground when not in use by the lever'P and to avoid contact with large stones o r other 'obstructionswhen in use, the scraper can be raised by meansJ of the same lever P, connected by a chain, q, with the beam I.

Claims.' What I claim as my invention, and desire to secure by Letters Patent, is

1; The scraper H, wheu attached to the beam I and brace J, :md adjusted by menus of the chain af,

Witness my mm1 this 25th myof April, A. D. rod brand piu 7:', in'oombnatiou substantially as set 1870. l

fovth. DAVID L. SHEPAR-D.

2. The branko-rod M, the connecting levers k l m n.0, and the spring N, in combnation wit-h the NVitnesses:

scraper H, substantallyas and for the purpose set N. W.. STEARNS,

forth.

L. E. BATCHELLER

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