USRE15704E - Automatic road and surface scraper - Google Patents

Description

Oct. 23, 1923.-

J. s. REYNOLDS AUTOMATIC ROAD AND SURFACE SGRAPER i l Filed Jan. 20. 1920 Ream! 0a. 23, 1923.

UNITED STATES JPQAITENT OFFICE.-

J'DSEPH S. REYNOLDS, OF S.A N'1A BARBARA, CALIFORNIA;

AUTOMATIC ROAD AND SURFACE SCRAIER.

Original llo. 1,888,838, dated February 15, 1921; Serial No. 352,902, filed J'anuary 20, 1920. Application for reissue filed August 13, 1923.

To all whom it may concern:

e it known that I, JOSEPH S. REYNOLDS, a citizen of the United States of America, residing at Santa Barbara, in the county of Santa Barbara and State of California, have invented new and useful Improvements in Automatic Road and Surface Scrapers, of which the following is a specification.

This invention relates to earth working elements such as scrapers, and'particularly shovel scrapers, and has for its object to provide an improved combination of tractor and scraper with means for locking the tractor and, scraper in operative scraping relation and readlly operative to release the scraping shovel from a locked position to permit it to be dumped and to provide means for automatically relocking the scraper in a given scraping position when the tractor is backed toward the-scraper. The inven tion consists of the construction, the combination and in details and arrangements of parts an embodiment of which is illus- ,trated in the accompanying drawings .and

' with the scraper in operative scraping position.

Fig. 2 is a plan view of the structure of Fig. 1.

. ig. 3 is a side elevation showing the dumping position of the scraper.

Fig. 4 is a detail sectional. view of a form of locking means to connect the scraper body to various angles to the draft beam of the tractor.

Fig. 5 is a cross section "on line 5-5 of The present invention contemplates the combination of an earth working element, which in the present instance is shown as a scraper of a type indicated at 2 having a scoop or shovel-like body with a flat bottom having an upwardly extending back portion 3 and parallel side portions 4-l, the transverse front edge of the bottom of the scraper forming a cutting means indicated at5 although a removable or renewable scraper blade or knife-may be provided if desired, and attaching thereto a suitable draft means as a tractor 6 and providing connecting means whereby the setting of the scraper in operative scraping position and the dumping of the same and the, resettion with respect to the 'by suitable means, here Serial No. 657,263.

ting of the same may all be readily accomplished by the movement of the tractor, the locking and releasing being controlled at will b the operator of the outfit. 1

n t is case a draw bar connects the scoop to the draft member 7 of the tractor. This draw bar consists of a front or leading member or link 8 pivoted at 9 to the draft member 7. The rear end of the link 8 is pivoted at 10 to a link or pair of'links 11 extending rearu-ardly and connected at 12 to the upwardly extending portion of a bracket 13 which is in this case attached to the middle of'the back 3 of the scoop.

Slidably mounted on the main link 8 of the draft device'there is a frame 14 that may comprise an inverted channel iron 15 straddling the link 8 and suitabl secured thereon by a transverse cleat or bar 16 to prevent the member 15 from vertical move ment, and from the forward end of the sliding member 15 there extend rearwardlyand outwardly braces 17 on each side, the rearmost ends of which are connected to respective pivots 18 that may be mounted on one or another of a series of apertures 19 in each of the. side walls-4 of the scraper body. The frame 14: further consists of a rear set of diagonal braces 20 converging toward and also arranged on the respective pivots 18,

the rear ends of the braces 17 and 20 on each side--overlapping and, if desired, being rigidly connected together to form a bodily removable and rigid frame.

For the purpose of locking the scraper 2 with its bottom in any' suitable angular posidraft link 8 and so as to vary its cutting angle or scraping angle with respect to the surface over which it is drawn, the sliding frame is adaptedto be locked to the link 8 at several positions shown as compris-- ing a latch or pawl 21, the forward and upper end of which is pivoted at 22 in suitable bearings' provided on the sliding member 15 of the frame 14, the web of the sliding memberbeing slotted as at 15 to permit the up and down play of the latch or pawl 21. 1

The latch 21 may be formed as a part of a lever 24 which extends upwardly from the pivot 22 to within convenient reach of the, operator of the tractor from a position at the seat S.of the tractor. The latch 21 is normally drawn downwardly through the in Figs. 4 and 5 with theflanges turned upwardly, this channel iron being straddled by the inverted channel iron or link member 15.

The operation of the device as above dev scribed is as follows:

\Vith the tractor-moving in the direction of the arrow in Fig. 1 and with the lower end of the latch 21 set against one of the pins 27, it will be seen that the draft or force in the draft link 8 will be transmitted by the engaged pin 27 to the latch 21, and.

the latter being pivotally mounted on the sliding frame 15 will lock the latter to the draft link 8 so that the power will be transmitted through the frame 14 to drag the scraper 2 along the surface.

The angle ofthe bottom of the scraper will-be determined by the distance of one of the ins 27 engaged by the latch 21 from g the lin connection '12 at the back and top of the scraper. After the tractor with the scraper has been advanced a suflicient distance to secure the loading of'the scraper, the operator. then has butto pull on the lever 24 to disconnect the latch 21 whereupon the connection between tlf'ejframe 14 and" the draft link 8 being broken the'scraper i change 0 will tend to rock on its front edge and rise on side shoes 28, that are provided for that purpose, to the position shown in Fig. 3, this bein accomplished by reason of the H t the point of pull from the pivots 18 in the-sides of the scraper to the pivot 12 at the upper end of the bracket 13 to which the links 11 at the rear end of the draft member 8 are attached.

Haring in this manner secured the dumping of the scraper it is only necessary for the operator to back up the tractor 6 with the result that the scraper will be turned .downwardly on the shoes 28 to the horizontal position shown in Fig. 1, and when the body of the scraper has assumed the desired angular position it is locked at thev same by the stopping of the reversing movement of the'tractor after which it can be ad anced and the pulling frame 14 automatically connected by the latch 21 to the draft link 8.

\Vhile. the means for changing the posi- 7 tion of the earth engaging element is shown in connection with a road scraper of the shovel type, and this is the preferred application of the invention, certain features thereof are useful for changin the position of other types of earth-wor ing implements. The claims are therefore not to be considered as being limited to the particular form of implement shown, unless their terms are such as to require' such limitation.

Various changes may be made without departing from the spirit of my invention as claimed.

' I claim: p

1. The combination with a tractor having a draft device, of an earth scraper of the shovel type, and a setting and tripping draft connection between'the tractor and saidearth scraper, whereby when the tractor is advanced said connection interlocks at selective positions to determine the effective ground engaging angle of said earth scraper.

2. The combination with a tractor having a draft device, of an earth scraper of the shoveltype; and a setting and tripping draft connection between the tractor and i said earth scraper, whereby when the' tractor is advanced said connection inter-" looks at selective positions to determine the effective ground engaging angle of the earth scraper and by which means the earth scraper can be moved to inoperative position while the tractor is still advancing and is attached to the earth Scraper.

3.v ,The combination with a tractor having a draft device, of unearth scraper of the shovel type; and a setting and trippin draft connection between the tractor an said earth scraper, said connection locking the earth scraper in 1 operative position when the tractor is advanced and operative to adjustably interlock at a selectedone of a plurality of positions when the tractor is backed up after said scraper has been moved. to inoperative position.

4. An earth working machine having means for attachment to draft means, said attachingmeans including a draft link' connected at its rear end to the back of the earth workingmachine; a sliding device mounted on the draft link and connected pivotally to the earth working machine; and'means for locking the sliding device at selective positions to the draft link.

5. A connecting device attachable to an earth working implement and attachable to a tractive means; said connection comprising-a main draft beam to be hitched at one end of the tractive means and to be pivotally connected at its other end to the implement; and an adjustable sliding member with means to lock it in selective positions on the draft, beam; said member pivotally connectible to the implement at a point in when the sliding member is disconnected the device is operative to shift the implement to another position.

('3. An earth working machine having means for attachment to a draft cleri -e inluding a draft link connected at it s"t\%a lr end to the back of the earth working marhine a sliding derive mounted on the draft link and connected pivotally with the earth working machine, a latch mounted on one of said parts and a plurality of pins or stops mounted on the other of said parts for locking the sliding device at selective positions to the draft link.

7. A connecting device attachable to an earth Working implementand attachable to tractive means; said connection comprising a main draft beam to be hitched at one end tothe tractive means and to be pivotally connected at its other end to the implement,

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