US296138A - Road sobapeb - Google Patents

Description

(No Model.) a sheets sh eet 1.

M. E. COOK. ROAD $011 533.. No. 296,138. Patented-Apr. 1, 1884.

N. PETERS FMO-Lilhognphar. Wahinglml. at.

MARCUS E. COOK, CFWALLI GFCRD, CONNECTICUT.

ROA'D-S-CRAPER.

SPECIFICATION forming part of Letters Patent No. 296,138, dated April 1, 1884.

Application filed November 10, 1883. (A model.)

To all whom it may concern Be it known that I, MARCUS E. COOK, of

Wallingford, in the county of New Haven and State of Connecticut, have invented a new Inr provementlin Road Scrapers; and 1* do here by declare the following, when taken in connection with the accompanying three sheets of drawings and the letters ofreference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this specification, and rep resent, inl Figure 1, a top or plan view of the apparatus; Fig. 2, a side view; Fig. 3, a transverse section in front of the scraper; Fig. 4, a trans 3 verse section through the rocker. h a This invention relates to an improvement in apparatus for leveling road-surtaces that is a to say, a scraper which is arranged upon a frame set onwheels, so that as the apparatus is drawn over the surface of the earth the scraper levels or evens the surface over which it is drawn. made adjustable to different angles to the path These scrapers require to be i w tached to a longitudinal rocker, D. This rocker is supported on a fifth-wheel,.E, resting on the forward axle, F, which carries the forward wheels, G G, and to which the drawing power f y to move the apparatusis applied. About midway of the length of the frame-that is, be-

tween the front and rear wheels-a vertical .abutmenlsH, is hung upon a pivot, a, and so asto be turned upon said pivot in a horizon- .tal plane, but held in its bearings so as to prevent vertical movement or change of elevation with relation to the frame. At the lower edge of this abutment H a toothed segment I, is fixed, concentric with the axis a, upon which the abutment will turn.

L is a vertical shaft, arranged in suitable bearingsiu the frame, and carrying at its lower end a pinion, M, corresponding to the teeth of the segment I, and so as to'work therein. On the upper end of the shaft is a handwheel, N, by which the pinion may be turned to correspondin gl y turn the segment and abutment H. In front of the abutment is a scraper, ,1 Near each end this scraper is attacliedto a vertical sliding rod, B. These rods work freely up and downthrough bearings in the abutmentframe. The scraper is attached to the rods by a pivot, as at (Z. (See Fig. 2.) h

To the abutment-frame levers S T are hung upon their respective fulcrums ef, their inner ends free, their outer ends connected by a rod, h, to the scraper, so that by depressingeither lever-say S, Fig. Iii-that end of the scraper will be raised, as seen in broken lines; or if the other lever be depressed, that end of the scraper will be raised accordingly; or-if both be depressed, then the scraper will. be raised bodily. By turning the hand-wheel N,the segmentl,with theabutmentH,iscorresponolingly turned, and because the scraper is in connection with or bears against the forward surface of the abutment it will be COII6SpOllldlLlgly turned, so that the scraper may be turned, say, from one angle (indicated in broken lines, Fig. l) to the opposite angle, (indicated by broken lines, same figure,) and in so turning the scraper the levers in connectiourwith it are correspondingly turned, so that they are always in the same relative position to the scraperfor operation. The operator can stand upon the platform in rear of the abutment and over the segment, and there can operate the hand-wheel and the levers, as occasion may require. The abutment is sustained by a segment, 2', (see Fig. 1,) which corresponds toits circular edge, the segment supported by braces Z from the rear axle, the lower bearing for the shaft L being made as apart of the segment 1 2 Thus the thrust is taken directly to the rear axle, and because of the adjustable abutment for the scraper it is always firmly-held, and none of the mechanism in connection with the scraper and necessary for its adjustment changes its relation to the scraper in such adjustment, the whole mechanism of the scraper being moved with it in changing its angle to order that such rocking or change of position to the forward axle may not-interfere with the level, of the frame which carries the scraper, I make the rocker D to stand in a position longitudinally central to the carriage, as seen in Fig.1. Theundersideofthisrockerisrounded,

and is of a length to bear upon the front and rear sides of the fifth-wheel E, and through this rocker the king-boltm is arranged. Therefore the rocker only has a bearing in a longitudinal central line. This will permit the forward axle to turn out of level in either direction, according'to the unevenness of the ground, as seen in broken lines,\vithout material effect upon theposition of the frame which carries the scraping mechanism, which cannot be the case when a two-plate fifth-wheel is employed, or a transverse bearing of any considerable length be made upon the forward axle.

By this construction ofscraper the angle as to direction of movement or elevation is easily adjusted and held in such position, and that position is not liable to be changed by the irregularities of the surface of the ground over which the forward wheels are obliged to travel.

I claim 1. In a road-scraper, the frame supported upon an axle carrying wheels at the rear, and an axle carrying wheels at the front, a'transverse abutment arranged upon said frame on a vertical axis, and made adjustable on said axis to change the angle of the abutment with relation to the direction in which the apparatus is drawn, a scraper in front of and so as to bear against said abutment and partake of its adjustment in a horizontal plane, said scraper adjustable vertically independent ofsaid abutment, substantially as described.

2. In a roadscraper, the combination of the frame supported upon'wheels at the front and rear, an abutment hung to the frame between the front and rear wheels upon a vertical axis, a toothed segment in connection with said abutment, a shaft and pinion working into said segment, whereby said segment and abutment may be turned to varying angles, a scraper arranged in front of said abutment and made adjustable thereon, substantially as described.

3. In a road-scraper, the combination of the frame supported upon wheels at the rear and front, an abutment arranged upon a vertical axis in said frame between the front and rear wheels, a toothed segment in connection with said abutment, a shaft and pinion workingin-l to the teeth of the segment, a scraper arranged in front of and so as to bear against said abutment, with a lever hung upon said abutment at each side, each lever in connection with its respective end of the scraper, substantially as described.

4. In a road-scraper, the combination of a frame supported upon an axle carrying wheels at the rear, and an axle carrying wheels at the front, a transverse abutment hung upon a vertical axis in said frame and made adjustable on said axis to different angles to the direction in which the apparatus is drawn, but held in its bearings to prevent change of elevation with relation to the frame, a fixed segment, 1', in rear of said abutment,the axis on which the abutment turns being the center of said segment, said segment supported by braces 11, substantially as described.

5. In a road-scraper, the combination of a frame arranged upon wheels at the rear and front, and carrying an adjustable scraper between said front and rear wheels, the frame at the front provided with a longitudinal rocker, D, resting in a longitudinal central .line upon the fifth-wheel of the forward axle,

and the king-bolt through said rocker, fifthwheel, and axle, said rocker rounded uponits under surface, substantially as and for the purpose described.

MARCUS E. COOK. WVitnesses:

. CHARLES G. HULL,

W. B. HALL.

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