US937216A - Road-scraper. - Google Patents

Description

v0. D'. KINSMN. ROAD SGBAPBB. APPLICATION P ILEDYDEG. 3.1, 1908.

937,216;` vmuted o.19,19o9.

l IU] Y i @di f l v A v ANDREW. EA GRAHAM co Pmwumomuwms. msmuomw n a CLAUDE D. KINsMAN, or LINCOLN, NEBRASKA.

ROAD-SCRAPER.

Specification of Letters Patent.

Patented Oct. 19, A1909.

Application led December 31,1908. Serial No. 470,240.

To all whom fit may concern: j i

Be it known that I, CLAUDE D. KINsMAN, a citizen of the United States, residing at Lincoln, in the county of Lancaster and State of Nebraska, have invented certain new and useful Improvements in Road-Scrapers, of which the following is a specification.

This invention relates to road scraping machinery, and more particularly to a simple form of drag.

A particular object of the device is to provide a scraper of simple design, the manufacture of which may be accomplished at a minimum of cost.

Another object of the invention is to provide a novel form of pivotal connection for the scraping blade.

Another particular object of the invention is to provide a novel form of clevis particularly designed for use with this device.

Other objects and advantages will be apparent from the following description, and it will be understood that changes in the specie structure shown and described may be made within the scope of the claims, and that any suitable materials may be used without departing from the spirit of the invention.

In the drawings forming a portion of this specification, and in which like numerals of reference indicate similar parts in the several views, Figure 1is a top plan view of the device, Fig. 2 is a transverse sectional view, Fig. 3 is a longitudinal sectional view.

Referring to the drawings, there is shown a scraper comprising a plurality of spaced cross bars 10, having perforations at their outer ends. Connected to the opposite ends of the bars 10, there are front and rear scraping blades 11 and 12 respectively, having a number of spaced lugs 13 thereon provided with spaced perforated ears receiving the end portions of the bars l0 therebetween, and having suitable pin members engaged commonly through the bars and the perforations in the ears to retain the blades 11 and 12 in proper pivotal connection with the bars. Connected pivotally with the upper portion of the blades 11 and 12 there is a link member 14 extending forwardly and rearwardly and pivoted between its ends to a lever 15 pivoted upon one of the bars 10, and carrying a dog 16 adapted to engage with a rack segment 17 carried adjacent its base to hold the lever adjustablyfat variouspoints in its movement. It will thus be seen that the blades are adjustable by means of the lever 15 to set them at any desired angle for treatment of a road surface. Carried by each ofthe outer end bars 10, there is a clevis member 18 comprising a bracket portion 19, from which there is a U shaped extension 20, extending upwardly and forwardlyv and downwardly beyond the front blade 1l. The outer end portion of the clevis is provided with a series of perforations 21 therethrough to allow the engagement of draft connections therewith at any desired height, suitable for horses of different sizes. It will be noted that the U shaped portion of each clevis is disposed centrally over the pivot point of the blade 11, and is so shaped as to allow full pivotal movement of the blade freely within the bight of the clevis.

The central bars 10 are provided with horizontally spaced transverse perforations 25 therethrough, and engaged revolubly in the opening 25, there are a pair of spaced resilient cross bars 26, upon which there is secured a support member 27, carrying a seat of a suitable type. Diagonal stays 28 are env gaged through the end bars 10 adjacent their outer ends these stays crossing beneath the inner bars 10, as shown.

It will be seen that a simple scraper is provided, the construction of which is adapted to allow flexible vertical differential movement between the blades, to adjust themselves to inequalities of surface, and the mounting of the seat is such as not to interfere with the compensating action of the frame.

It will be obvious that the device is adapt-- ed to be manufactured with the utilization of a minimum amount of material, which material may be of stock character.

The seat support 27 is provided with a horizontal portion 30 centrally perforated and having engaged upwardly therethrough a headed bolt 31. The bolt depends between vthe bars 26 and carries therebeneath a clamp block 32 adjustable by means of a nut 33 engaged upon the bolt outwardly of the support 27. By this means the seat is adjustable transverselyof the scraper, so that the weight of the operator may be utilized to cause deeper engagement of the scraper at one side than at the other.

What is claimed is:

1. In a road scraper, the combination with a pair of transversely extending spaced scraping blades, said blades having pairs of ears extending inwardly therefrom, the ears of the two blades being registered in pairs, of forwardly and rearwardly extending bars pivoted at their ends in the registering pairs of ears, for pivotal movement of the blades with respect to the bars, the bars of the innermost pair having openings therein, brace bars engaged at their ends in the openings, said brace bars extending parallel with the scraping blade and being disposed in spaced j relation, a seat spring disposed upon the upper surface of the brace bars, a bolt engaged in the seat spring and extending between the brace bars, a clamping plate engaged with the bolt beneath the brace bars, a seat mounted upon the spring, a link pivoted at its ends to the scraping blade above the plane of the pivotal connection of the blades with the lirst named bars, a lever pivoted to one of the innermost pairs of the first named bars, pivotal connections between the lever and the link for movement of the link to shift the blades upon their pivotal connections with the first named bars when the lever is moved, means for holding the lever at different points of its movement, stay rods engaged in the diagonally opposite ends of the outermost of the first named bars, said stay rods extending downwardly beneath the innerl most pair of said rst named bars and being crossed therebeneath, and means connected with the outermost of the first named bars for attachment of a draft agent thereto.

2. In a road scraper, the combination with spaced forwardly and rearwardly extending bars, of transversely extending plates pivoted to the bars for movement to vary the angle of engagement of the blades with the ground, means for shifting the blades, and clevis members carried by certain of the bars and extending upwardly and forwardly and downwardly over the forward scraping blade to bring the forward end of the clevis member below the point of pivotal connection of the forward blade with the bars, the curvature of said clevis member being such as to permit free movement of the forward scraping blade upon its pivot point.

In testimony whereof I affix my signature, in presence of two witnesses.

CLAUDE D. KINSMAN.

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