US 298604 A
Description (OCR text may contain errors)
(No Model.) 3 Sheets-Sheet 1.
No. 298,604. PatentedMay 13, 1884.l
Ny FETRS, Phuw-Lhbugraphlr. Wuhlnglou. ILC,-
(No Model.) 3 Sheets-Sheet 2.
No. 298,604. Patented May 13, 1884.
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N4 FETRa mwmhognpher. washington. D C.
(No Model.) 3 Sheets-Sheet 3. C. MENDENHALL.
No. 298,604. Patented May 13, 18814.
lhnirnn F'rnrns Fa'rnivr @riviera CLARKSON MENDENHALL, OF VILMING-TON, DELAWARE.
SPECIFICATION forming part of Letters Patent No. 298,604, dated May 13, 1884.
Application filed March 1, 1884. (No model.)
To @ZZ 1,071,011@ t may concern:
Be it known that I, GLARKsoN MnNnnN- HALL, a citizen of the United States, residing at Vilmington, in the county of New Castle and State oi'Delaware, have invented new and useful Improvements in Road Scrapers, of which the following is aspeciiication.
The present invention relates to that class of road-Scrapers in which is employed a scraperboard that extends across the road-bed in such. a manner that it can be set at different angles in relation to the draft-pole.
The object of theinvention is to provide a road-scraper board which, in addition to its capability of being set straight across the roadbed, can be inclined or set obliquely in opposite directions from a'central draft-pole, and can be raised at either end to avoid obstructions or cause the scraping operation to be carried on only at one side of the machine. Furthermore, the scraping devices are capable of being raised entirely from the ground when clearing obstructions or when transporting the machine from place to place. Means are also provided for locking the scraper-board in either of the positions into which it is capable of being placed, and the adjustment of the board is performed from ,the drivers seat or platform without necessitating his descent therefrom.
The invention will first be fully described, and then pointed out in the claims.
Figure l is a plan view showing the scraperboard extending in a straight line across the road-bed. Fig. 2 is a similar view showing the scraper-board and its supporting-beams in position for holding said scraper-board obliquely across the road-bed. Fig. 3 is a view similar to Fig. 2, except that the scraper-board is shown oppositely inclined in relation tothe road bed. Fig. 4: `is a side elevation of a road-scraper embodying my improvements, the parts being in position ready for work. Fig. 5 is a side elevation showing the scraperboard in a raised position and the machine supported solely upon the ground wheels. Fig. 6 is ay front elevation showing the draftpole, whiffietree, and elliptical front bar or beam for supporting said draft-pole and whifiietree., Fig. 7 is a section taken through the scraper-board and supporting devices.
The letter A designates a Vdraft pole or tongue, which is extended in a rearward direction, so as to constitute the central beam, A, of the supporting-frame of the scraper or machine. This pole A passes through a front beam or support, which consists of two semielliptical or curved bars, B, that meet at their ends, and are united thereat by vertical bolts a. The draft-pole passes through the center of the elliptical space left between these bars B, and a vertical bolt or pivot-pin, C, serves to connect it with both bars. A whifiietree, D, supported upon the bottom bar, B, is held in place by the bolt C, and can turn thereon. At the ends of the bars B or the front supporting-beams are arranged upwardly-projecting clevis rings or plates E, which receive the hooked front ends of longitudinal rods or bars F.' The object of these clevis-rings is to permit the rods or bars fitted therein to turn thereon or therewith, and have a sufficient vertical play for the object hereinafter stated. The rods or bars F are generally made of metal, and serve to support the longitudinal side beams, G, beneath 'which the scraper-board H is hung. The front ends of these beams G are provided with sockets H', which encircle and clamp the rods or bars F, and are secured to the beams by clip-plates h, embracing said beams. At the rear ends also of these beams are located loops or staples a', through which the rods or bars F are passed to connect the beams and bars, so that they will move together. A transverse brace-rod, I, extending beneath the tongue or the beam continuation thereof, is connected to the front ends of the beams G, and serves to assist in holding the same in their proper relative positions.
The scraper-board H is of any preferred form or construction, and is connected with a depressed portion, A2, of the beam continuation A of the draft-tongue by means of a bolt, J, which is securely fitted in the top edge of the scraper-board, and projects through a slot, ai", in said depressed portion A2 of the drafttongue or central beam of the machine. The scraper-board is also provided with round posts or tenons K, which project above the top edge thereof and extend through corresponding openings in the side beams, G, suitable keys and washers applied to the tenons IOO . lbeam in place.
above the beams serving to hold the scraper- The round tenons K are the upper eontiuuations of standards L, which are secured to the rear face of the scraperboard, and are embedded or seated in the laty the beams, and suitable bolts pass through said bifurcated stocks and the beams for securing-the same.
VIn rear of the stocks N, which may also be termed braces or supports i for the scraper-board, are arranged metal frames or hangers O,in which are journaled small wheels P, that are designed to run upon the ground when the scraper-board is raised, 'as will be hereinafter stated. rPhe hangers or frames O are slotted or they are made of plates which eX- tend on both sides of the beams G and terminate at the proper distance above the latter to serve as the point of attachment for the rearwardly-extending levers Q the attachment of the hangers to the levers being rigid. The lower ends of the hangers are formed or otherwise provided with rigidly-attached forwardprojecting portions O, pivoted to the stocks N, and thus the journals or pivots of the wheels P become the fulcrums for the hangers and levers O Q, so that if the lever Q be depressed the portion O of the hanger O will be elevated to raise the beam G. These levers are generally slotted and operate on curved racks B, rising from the beams G, these racks passing through the slots in the levers and the latter being locked thereto by means of movable catches or bolts 1'. From the rear of the drafttongue or the beam continuation thereof rises an arm, S, which supports a seat, S', for the driver or operator of the machine. The levers Q extend along the sidesof said seat, so as to be within convenient reach of the driver, for the object hereinafter stated.
Below the driver7 s seat is arranged a platform, T, which serves as a foot-board for enabling the driver to exert, when required, a proper downward pressure upon the machine, to hold the scraper-board in a proper operative position. This platform T is pivoted at its ends to brackets or hangers U, depending from the rods or bars F, suitable bolts or screws passing through the platform and horizontal bottom portions of the hangers, constituting the pivots, which allow the platform or foot-board to turn. Perforated metal plates R, secured to the top of the scraper-board, serve, in connection with a hooked rod, Y, carried by the side beams, G, to hold the scraper-board in a proper working position.
Having described the construction of my improved scraper, I ,will now set forth the mode of operation thereof. v
Then the scraper-board is in the position shown in Fig. 1, or is arranged straight across the road-bed, the side beams are parallel with each other, or, in other words, their front and rear ends are directly inline with each other, and the parts are locked in this position by the hooked rod V, entered into one of the perforations of the plates B on the scraperboard. Vhen the ground-wheels are in an elevated position, the scraper-board is in contact with the ground for the proper performance of the scraping operation. In order to raise it entirely above the ground, the levers arranged within controlof the driver are depressed, thus throwing the wheelhangers downward and 'causing the machine to be supported upon the ground-wheels. By operating the levers at either side of the machine singly, either end of the scraper-board can be elevated, so as to enable stones or obstructions to be properly cleared. In order to set the scraper-board at an oblique angle to the draftpole, the side beams are thrown into the position shown in Fig. 2, or, if a reverse inclination of the scraper-board is desired, into the position represented in Fig. 2.
It will be evident that the pivotal connection of the front elliptical support or bar, B, with'the draft-pole and a similar connection of the side beams with the scraper-board by means of the round tenons thereof will enable said beams to be moved longitudinally in relation to the central draft pole or beam, so as to permit the scraper-board to be set obliquely in either direction in relation to the draftpole or center beam. This movement of the scraper-board is also permitted .by reason of the peculiar connection of the longitudinal rods or bars F with the clevis-plates on the front elliptical beam or support and the claspplates of the pendent stocks or braces of the side beams encircling the round portions of the standards L, secured to `the rear of the scraper-board. Moreover, the pivotal connection of the platform or foot-board with the hangers or supports on the side beams is also necessary to allow the above-mentioned adj ustments of the scraper-board to be effected.
It is evident that the engagement of the hooked front ends of the bars or rods F with the clevises on the front bar or support, B, will allow said bars to be moved up or down independently of each other, and for this reason either side of the scraper-board can be raised by the manipulation of the lever and wheel mechanism in the manner already described.
It has been stated that the scraper-board has upwardly-projecting tenons, which turn in sockets in the side beams, and are held in place by keys and washers, and it may now be added that, if desired, I may apply springs or elastic washers to the portions of the tenons projecting above said scraper-board, in order 'to make an elastic connection between the scraper-board and side beams and allow said IOO IIO
movement independently of the adjustment effected by the lever and Wheel mechanism.
I am aware that a road-scraper has been constructed of parallel longitudinal beams and transverse bars carrying scraperblades pivoted together in such amanner that said scraper-blades can be set at right angles to the road or at different angles in relation thereto.'
I-Iaving thus described my invention7 what I claim isl. In a road-scraper, the combination of the central draft pole or beam, the pivoted cross-bar, the longitudinal rods or bars connected with the latter, the parallel shiftable side beams, and the scraper-board pivotally connected with the central and side bea-ms, substantially as described.
2. In a road-scraper, the combination of the scraper-board having upwardly-projecting round tenons and rear posts or standards provided with rounded portions, and the inclined stocks having clasps encircling said rounded p ortions,with the parallel shiftable side beams and the central beam or draft-pole, substantially as described.
3. In a rOadscraper, the combination of the pivoted foot-board or rear platform and the shiftable side beams having brackets or hangers for supporting said foot-board, With the central beam, a draft-pole, and the scraper- 3o board pivotally connected to the side and central beams, substantially as described.
4:. In a road-scraper, the combination of the pivoted hangers and bearing-Wheels j ournaled therein, and the levers or lifting devices con- 3 5 nected With said hangers, with the shiftable side beams, the central beam or draft-pole, and the scraper-board pivotally connected there- With, substantially as described.
, 5. In a road-scraper, the combination of the 4o scraper-board having perforated catch-plates, and the shiftable side beam carrying hooked rods adapted to engage with said catclrplates, with the central beam, and second shiftable side beam pivotally connected With the scrap- 45 er-board, substantially as described.
In testimony whereof Ihave hereunto set my hand in the presence of two subscribing Witnesses. Y
JAMEs L. NoRRis, J. A. RUrI-riinronn.