US292375A - Road-scraper - Google Patents

Description

(No Model.)

L. SMITH ROAD kSGMPER. i No. 292,375. Patented Jan. 22, 1884.

immuun Miren STATES PATENT 'Ormea LYMAN SMITH, or MALTA, ILLINois."

ROAD-SVCRAPER.

SPECIFICATION forming part of Letters VPatent Nu. 292,375, dated January 22, 1884.

' Application filed July 2,1883. (No model.)

'[0 all whom, it may concern;-

`Be it known'that I, LYMAN SMITH, of Malta, in the county of De Kalb and State of Illinois, have invented certain new and useful Improvements in Road-Scrapers; and I d o hereby declare that the following isl a full, clear, and exact description thereof, reference being hadjtoV the accompanying drawings, and to the letters of referencemarked thereon, which form a part of this specification.

' This invention relates to an improvementin road-Scrapers. Its object is to provide animproved construction in such machines; and it consists in the matters hereinafter described, and pointed out in the claims.

In theaccompanying drawings, Figure l is a perspective View of a road-scraper embody-` ing my invention. Fig. 2 is a plan view of the same. .Fig. 8 is a longitudinal vertical sectiontaken upon' theV line x of Fig. 2. Fig. 4 is a detail section taken upon the line y y of Fig. 2. Fig. 5 is a detail section taken upon line x x of Fig. 3.

, The main support or frame of the machine consists of a transverse beam or axle-tree, A, supported at its ends by two wheels, B, and a beam, C, attachedk rigidly at its rear 'end' to said axle, extended forward to form a tongue, which is supported at its front end by means of a neck-yoke from the collars upon the horses by which the scraper is drawn. The

'beam A is preferably elevated above the hubs of the wheels, as shown, the axles being secured to depending brackets a upon the ends of thebeam.

' D is the scraper, which is arranged in an inclined position at the rear of the wheels B, and is rigidly attached to the rear ends of two beams, E, which converge to a point near the front end of the tongue C, and are secured rigidly together at their front, ends by a loopbar, e, and attached flexibly to the said tongue by the engagement Aof the saidloop lwith an eye, c, upon the under side of said tongue. Draft is applied directly to the scraper by 'means of a double-tree, E2, which is connected to the beams E at a point near the scraper by means of a rod, E', connected, as shown, at its ends tosaid beams by means of bolts e. The machine is intended to be drawn by two horses harnessed upon either side of the tongue, singletrees e2 being connected to the double-tree E2 for this purpose.

F is the drivers seat, which is supported above and slightly to the rear ofV the scraper byvmeans of a bar, G, rigidly attached at its frontend to the tongue-the said seat being so placed that the operator, when inthe seat, can readilyrest his feet upon the top edge of the scraper. Beneath the seat, and'pivoted at its front end to the rear end of the tongue, is albar, H, the rear end o`f which is supported by a caster-wheel, J, mounted in a pivoted standard, I. The bar His connected tothe end of the tongue, so as to permit a vertical play at its outer end only, the connecting devices, as shown, consisting of two side plates, 7L, bolted to the bar H, and secured to the rearwardly-projecting end of the tongue by means of a pivot-bolt, h?, passing horizontally through their projecting ends and the said projecting end of the tongue.

For the purpose of lifting the scraper D in transporting the machine, and in order to independently control the elevation of either end ofthe scraper, devices are provided as fol; lows: Up'on the top of the beam A are mounted standards K, and levers L are pivotally attached to the tongue at their front ends, and project rearwardly in position to be grasped by the driver, said levers being connected to the beams E by means of chains or ropes Z,

'secured at their ends to said levers and beams,

respectively, and passing over pulleys k, mountedin the upper ends of the standards K. The levers L are arranged: tov move between two side plates composing the standards K, and one of said plates in each standard is provided with a notched segment, lc', and the said hand-levers with a spring-detent, Z', constructed to engage said notched segments, so that the levers may be set in any position desired, and the scraper held perma` nently at a required elevation from the ground, according to the work tobe done. The pivotal connection between the front ends'of the levers L and the tongue Gis preferably formed by means of a plate, L', bolted to the top of said tongue, andl having laterally-projecting arms, upon which the said levers are'pivoted, as shown.

Diagonal bracesC are bolted to the tongue C and beamAyas shown, for' the purpose of giving' requisite rigidity to the frame, and curved rods or braces h are rigidly attached to the rear end of the bar H, and are connected to the rear side of the beam A near the ends thereof by pivotal joints h?, so as to permit a free vertical movement to the outer end of said bar.

rlhe scraper D is preferably composed of a heavy plank about a foot wide, placed in avertical position upon its edge, and having a forwardly-projecting cutter-blade, D, secured to the lower edge. As a means of securing the blade D to the plank D, a forwardly-projecting inclined piece, d, is secured to the lower edge of the said plank by means of vertical bolts d', to the upper face of which the said blade is secured by means ofbolts di. ln the use of a cutter-blade such as described it is found to become worn to a bevel upon its under side, and with a sharp edge at its upper surn face. ln order to utilize this sharp edge, I have found it desirable to reverse the blade, so as to bring the sharp edge downward and in position to enter the ground. For this purpose the bolts d, by which the said blade is secured to the piece d, are arranged symmetrically with reference to the ends or center of the blade, so that it may be turned end for end, and the bolts will fit the aperture therefor. This construction is shown in Fig. 5, in which a single central bolt is used with two bolts at equal distances upon either side of it. The scraper D preferably extends beyond the wheels at both sides of the machine, thus enabling the machine to operate to the outer margin of a road. y

The beams E are secured to the scraper at points near the ends thereof, the means of connection shown consisting of straps passing around the upper portion of the plank D, and having their ends secured to the upper and lower faces of the said beams by means of the bolts c', by which the draft-rod E is secured thereto. The beams E, to which the scraper is attached, are ilexibly connected to the tongue at their front ends, so that the scraper is free to swing laterally, and may be thrown either to the left or to the right, so as to bring the scraper more nearly square across the path of the machine, to hold the dirt and carry it to a given point where it is to be discharged; or it may be placed at a greater angle, whereby the dirt is deflected laterally in the forward movement of the machine. rlhe lateral movement mentioned is given to the scraper by the feet of the driver, who sits in the seat astride the caster-beam, with his feet upon the top of the scraper, as before mentioned. For the purpose of limiting the side motion of the scraper, chains- E are secured to the sides of the beams E and to the depending portions a of the beam A, as shown, and the said beams are thereby prevented from coming into contact with the vsupporting-wheels B. The machine is preferably so arranged that when the scraper is down and its weight is supported by the ground, the tongue will balance the weight of the driver,

and the seat F will be above the bar H and in the position shown in Fig. 3. The purpose of the pivoted bar H and the caster-wheel described is to support the weight of the driver at the time the scraper is lifted from the ground, and to thereby prevent the end ofthe tongue from being thrown upward by his weight and by the weight of the scraper at such time. The seat for this purpose is so placed that it will be a short distance above the said bar when the scraper is resting upon the ground, so that the outer end of the tongue will be lifted to a slight extent only before the seat rests upon the said bar. By the flexible attachment of the bar H with the tongue the implement will also adjust itself to irregulari ties in the roadway, and the braces h', ilexibly attached to the beam A, move with the bar H and secure it from lateral movementin allpo` sitions. y

rl`he lifting-levers L operating independently, as described, either end of the scraper may be elevated, as desired, and it may be supported at any angle or elevation, according to the conformation desired in the surface of the road, to the depth to be cut, the strength of the team, or other necessities of the case.

By locating the seat as described, the driver, by keeping his feet upon the top of the scraper, is not only enabled to move it laterally, but, by throwing his weight more or less upon the scraper or upon one end thereof, may control its action, according to the condition of the ground or its hardness in different places.

My invention is not restricted to the particular means shown for independently lifting the ends of the scraper; but any well-known suitable device may be used for the purpose. Any other means than that shown for connecting the double-tree with the scraper may be used. The rods E may, for instance, be connected to the scraper itself instead of to the beams E. A desirable construction in such case would be to pass the ends of said rod through the vertical part of the scraper and -secure it thereto by nuts upon its ends.

The construction described in the scraper presents a great advantage in point of simplicity and cheapness, aside from the advantage arising from the reversibility'of the cutter-bladc, as before fully set forth.

I claim as my inventionl. The combination, with a supportingframe mounted upon two wheels and projecting forward of the same, a scraper, D, located at the rear of the supporting-wheels, and means for lifting said scraper, of a rearwardlyprojecting bar, H, iiexibly secured tol the frame, a caster-wheel, J, mounted upon said bar, and means (as G) upon the frame constructed to engage the said bar, .whereby the upward movement of the front end of the frame is limited, substantially as and for the purposes set forth.

2. The combination, with a supportingframeY mounted npon'two wheels, a scraper, D, located at the rear of said wheels, and

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means for lifting said scraper, of a rearwardlyprojecting pivoted bar, H, a caster-Wheel, J, upon said bar, a seat, F, and a rearwardlyprojecting seat-arm, G, secured at its front 5 end to the said frame, substantially as described.

3. The combination, with the beam A, the tongue C, rigidly attached thereto, and the supporting-Wheels B, of the pivoted casterro beam Hand braces h', attached to said bar, and

pivotally connected to the beam A, substantially as and forthe purpose set forth.

4. The combination, with the beam A, the tongue C, rigidly attached thereto, and with 15 the supportingwheels B, of a scraper, D, beams E, rigidly attached to the scraper and LYMAN SMITH.

Vitnesses:

M. E. DAYTON, JEssE Cox, Jr.

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