US1377561A - Scraper - Google Patents

Description

J. M. CONLEY.

SCRAPER. APPLICATION FILED FEB. 3, 1920.

Patented May 10, 1921.

i INVENTOR; (fa/211M blzlgv BY Q) ATTORNEY JOHN M. CONLEY, OF STOCKTON, CALIFORNIA.

SCRAPER.

Application filed February 3, 1920.

T 0 (ZZZ whom it may concern:

Be it known that I, Jorrn M. CoNLnY, a citizen of the United States, residing at Stockton, in the county of San Joaquin, State of California, have invented certain new and useful Improvements in Scrapers; and I do declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, and to the characters of reference marked thereon, which form a part of this application;

This invention relates to improvements in scrapers, having certain features of novelty over the type of scraper shown in my copending application for patent filed January 10th, 1920, Serial No. 350,568.

The principal object of the present invention is to provide the scraper with an auxiliary and rigid scraping member to be used especially when scraping on hard ground, so that the strain will be taken directly by the frame of the scraper instead of by the turnable scraping and dumping plate, as in the application previously mentioned.

Another object is to arrange a means connected with the dumping or spreading mechanism so that the body of the scraper will then be lifted clear of the ground and carried on auxiliary runners, this latter feature being especially of service when transporting the scraper from place to place, either empty or loaded.

A. further object is to provide adjustable deflector or baffle plates on the main dirt retaining members which may be set at different levels to aid in the spreading of the dirt and at the same time serving as a limit to hold the dirt when the scraper is being loaded.

These objects I accomplish by means of such structure and relative arrangement of parts as will fully appear by a perusal of the following specification and claims.

In the drawings similar characters of reference indicate corresponding parts in the several views.

Figure 1 is a perspective view of-the scraper, showing the same in loading position.

Fig. 2 is an enlarged fragmentary side elevation, showing a dirt-holding plate in dumping position.

Fig. 3 is a cross section taken on a line 38 of Fig. 2.

Specification of Letters Patent.

Patented lllay id, 1921.

Serial No. 356,031.

Referring now more particularly to the characters of reference on the drawings, the numeral 1 denotes the side members or frames of the scraper, provided with bottom runners 2, and braced by cross beams 3 at its upper front and rear ends, The scraper is adapted to be attached to a tractor by means of a connection 1*.

Turnably journaled in the frames is a transverse shaft 4:, to which between the frames are fixed a plurality of double armed spiders 5, to which scraper plates 6 are fixed in opposed relation, the lower edges of these plates being curved forwardly somewhat as at 7 when in scraping position, and adapted to project somewhat below the level of the runners when angled forwardly. These blades are used for scraping in soft or loose ground.

For operating in hard material, I provide a rigid blade 8 fixed to the members 1 just forward of the plates 6 and being adjustable for slant relative to the frames 1. They are positioned EQlZJiVG to the plates 6 so that one at a time of thelatter may form with the plate 8 a substantially unbroken dirt retainer or scoop. With this extra scraping plate in use, the strain of scraping in hard ground is taken entirely bythe rigid frame work of the scraper instead of by the plates 6, which in this case merely serve as a dirt catcher. a

The shaft 1} and the plates 6 are held in position and their movement controlled by means of disks 9 fixed to the shaft at both ends and outside the frames 1, which have a plurality of notches 10 arranged in predetermined positions relative to each plate 6, and adapted to be engaged by pawls 11 pivotally mounted to the frames 1 and forming part of arms 12 projecting above the frames and connected together by a suitable mem ber 13 across the top of the scraper, to which member is connected a cable 14 adapted to be pulled by the operator of the tractor to which the scraper is attached.

For each plate 6 I have provided two notches 10 in the disks 9 to position each plate 6 adjacent or below the rigid blade 8, and four notches 10 to take care of the spreading.

The shaft 4 and the parts connected thereto may be rotated in a clockwise direction at will by means of a lever arm 15 turnably mounted on the hub of one of the disks 9,

or on the shaft and having a pawl 16 en gaging a ratchet member 17 formed integral with said disk or otherwise fixed relative thereto. The lever 15 is preferably on the right hand side of tie scraper relative to the tractor attached thereto, and may be actuated from the tractor by means of a cable 18. Of course in or ler to pull the lever to turn the shaft, the cable is must first be pulled to disengage the pawl 11 from the disks 9.

Removably fixed to the disks at opposed points thereon are longitudinally curved runners 19, or wheels 20 as indicated in dotted lines on Fig. 2. These members are positioneo relative to the spreading notches 10 in the disks, so that when the latter have been rotated to a position where any of these notches are in engagement with the pawls 11, the runners will then bear on the ground at a level lower than that of the runners 2, and so will carry the weight of the scraper. This will provide more space be tween the ground and the blades 6 when the latter are angled rearwardly, and will thus facilitate the dumping.

lVith the use of wheels, the frictional resistance of the scraper is of course greatly lessened. As clearly indicated in Fig. 1, each runner may be of such a length as to bear on the ground from the dumping or spreading position of one plate, to the scraping position of the other plate. With such construction then, the hand lever 15 and ratchet 17 may be done away with, and the dumping and resetting will be automatic upon the release of the pawls 11.

These runners or wheels may of course be removed if their use is not desired.

Adjustably mounted to the blades 6 transversely thereof are deflector plates 21, projecting from the face of the plates a distanee suiiicient to not only retain a. relatively large amount of dirt on the plate, but aid in spreading the same when the plates are inverted for dumping or spread ing. If desired, the runners 19 may be of such a length and radius from the center of the disks 9 as to engage the ground when the blades are in their vertical or lowermost positions, so that in soft ground the blades will be freed from the ground and will not tend to sink therein.

From the foregoing description it will be readily seen that I have produced such a device as substantially fulfils the object of the invention as set forth herein.

While this specification sets forth in detail the present and preferred construction of the device still in practice such deviations from such detail may be resorted to as do not form a departure from the spirit of the invention, as defined by the appended claims.

Having thus described my invention what I claim as new and useful and desire to se cure by Letters Patent is 1. A scraper comprising side frames adapted to rest on the ground, dirt retaining and scraping plates pivotally mounted between the frames and adapted to have the scraping edges thereof positioned at different horizontal levels relative to the bottom of the frames, and a rigid scraping member mounted between the frames ahead of the plates.

2. A scraper comprising side frames resting on the ground, a scraping and dirt retaining member turnably mounted between the frames and normally held against turning, means for releasing the blade whereby the same will automatically move backward with the forward movement of the scraper to dump the load and means whereby the side members will then be lifted clear of the ground to increase the distance between the scraping member and the ground.

3. A scraper comprising side frames resting on the ground, a scraping and dirt retaining member turnably mounted between the frames, disks connected to the scraping member and adapted to be normally held from turning, means for releasing the disks to allow the scraping member to move backwardly to dump the load scraped, and ground bearing members on the disks projecting below the level of the side members of the scraper when the scraping member is in dumping position.

4:. A scraper comprising side frames normally resting on the ground, opposed scraping and dirt retaining plates turnably mounted between the frames, disks con nected to the axis of the plates, means for holding the disks in predetermined positions and means on the disks and adapted to bear on the ground and raise the side frames therefrom between the dumping position of one plate and the loading position of the other, whereby such movement is automatic with the forward movement of the scraper when the disk holding means is released.

5. A scraper comprising side frames normally resting on the ground, opposed scraping and dirt retaining plates turnably mounted between the frames, means for holding the same in predetermined loading and dumping positions, the latter be ing had automatically with the forward movement of the scraper, and means connected to the axis of the plates and adapted to engage the ground from the dumping position of one plate to the loading position of the other.

6. A scraper comprising side frames normally resting on the ground, opposed scraping and dirt retaining plates turnably mounted between the frames, means for holding the same in predetermined loading and dumping positions, the latter being had automatieall; with the forward movement or" the scraper, and means connected to the axis of the plates and adapted to engage the ground from a predetermined position or one plate to the loading position of the other.

7. A scraper comprising side frames adapted to rest on the ground, di 'thretaining and scraping plates pivotally mounted between the frames and adapted to have the scraping edges thereof positioned at diftercnt horizontal levels relative to the loottom of the frames, and a rigid scrapmg member mounted between the frames ahead of the plates, the rigid scraping member being also adjustable for difierent scraping depths.

8. A scraper comprising side frames adapted to rest on the ground, dirt retaining and scraping plates pivotally mounted between the frames and adapted to be rotated to dump the dirt, and transverse plates adjustahly fixed to the scraping plates at an angle thereto and terminating near the ground when the scraping plates are in dumping position.

In testimony whereof I affix my signature.

JOHN M. CONLEY.

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