US2145497A

US2145497A - Dumping scraper

Info

Publication number: US2145497A
Application number: US168435A
Authority: US
Inventors: Roshak Frank
Original assignee: Individual
Current assignee: Individual
Priority date: 1937-10-11
Filing date: 1937-10-11
Publication date: 1939-01-31
Anticipated expiration: 1956-01-31

Description

Jan. 3L 1939. F. Rosi-AK DUMPING SGRMER Filed dat. 11, 193? INVENTOR K rY ALM W1K s 11o m n MWA K M Ffm,

I Patented Jan. 31, 1939 uNiTED STATES DUMPING SORAPER Y Frank Roshak, Tigarl,d Oreg.

Application October 11, 1937, Serial No. 168,435

4 Claims.

This invention relates to Scrapers and is especially adapted to be used in connection with dump scrapers.

The primary object of the invention is to provide a locking means for holding the scraper blade against rotation.

Another object of the invention is to provide locking means so designed that it can not be sprung out of place. In my new and improved lock the strain against the lock by the turning action of the scraper is transferred directly to the frame of the machine and the locking bar resists any bending action directed thereagainst.

A further object of my invention is to provide a locking means that can be easily controlled from a distant point such as the tractor that may be pulling the scraper.

Another object of my invention is to provide a locking means that will allow the scraper blade to revolve when the tractor and blade are reversed.

These and other incidental objects will be apparent in the drawing, specification and claims to follow.

Referring to the drawing:

Figure 1 is a side elevation of a well known type of dumping scraper having my improved lock mounted thereon.

Figure 2 is a plan view of Figure l.

Figure 3 is a fragmentary plan view of the tongue of the scraper, more clearly illustrating part of the locking mechanism.

Figure 4 is a fragmentary detail sectional view, taken on line 4--4 of Figure 2, looking in the direction indicated.

In the drawing:

I is a conventional revolving scraper hopper, having a cutting blade 2 and cylindrical end 3. Scraper I is journaled to side bar members 4 of frame 5 by pins 5. Frame 5 is secured to a tongue 'I at its forward end and to the rear of the tongue by cross members 5A. Locking bars 8 are pivotally mounted to the frame at l) at their one end, and are pivotally connected to control rods Iil at their other ends. Control rods IIJ are pivotally connected at II to bosses I2, which are secured to a sliding rod I3. Rod I3 is slidably mounted in supporting guides I4. A boss I5 is also formed as part of the bar I3 and it is connected to lever I5 by a rod I'I. Lever I6 is pivotally mounted at I8 to an upwardly extending bracket i9, said bracket, in turn being mounted to tongue l.

Referring to Figures l and 2, the end 1A of the tongue is assumed to be fastened to the draw bar of the tractor, not here shown. The pull cord 2l) from lever I6 extends to the tractor and in the event it is desired to unlock the scraper permitting the blade 2 to revolve the cord 2U is pulled forward rocking lever I6 upon its pivot 5 support I8 pulling the rod I1 and slide rod I3 to the right, this moves outwardly the rods or connecting links I0 unlocking the bars 8 from the stop 2l, permitting the blade I to revolve. A spring 22 is also connected to the boss I5 and 10 to the frame at 23 and is for the purpose of returning the locking mechanism to the position shown in Figures 1 and 2.

Referring to Figure 4, a guiding bracket 24 is mounted to the frame 5 by the bolt 25 and is 15 hooked under the frame 5A as shown at 26. The guiding bracket guides the locking bars 8 upon the frame. The stops 2| have a cam surface 2 IA permitting the Scrapers to be revolved backwards without manipulating the lever I 6, the cams 20 moving the locking bars outwardly when the scraper is revolved backwardly, or to the right viewing the several gures of the drawing. Normally the forward faces of stops 2| engage the locking bars 8 and prevent forward rotation of 25 the scraper until such bars are moved out of engagement therewith by rocking lever I6 as heretofore explained.

As stated before the locking bars rest firmly on the upper surface of the frame at pivot point 30 9 and at points intermediate their lengths. This solid support forms a rigid stop for the stops 2l.

I do not wish to be limited to this particular form of construction as different mechanical variations may be used still coming within the scope 35 of the claims to follow.

I claim:

l. In a scraper, a scraper body, a frame journaled thereto having a tongue, locking bars pivoted to lateral extremities of the frame, a mem- 40 ber slidably connected with the tongue, connecting members between the slidable member and locking bars whereby when the slidable member moved rearwardly the locking bars are pivoted outwardly and when the member is moved for- 45 wardly the locking bars are pivoted inwardly, means yieldably normally holding the member and locking bars in the latter position, means for moving the slidable member against the action of the yieldable means, and stops mounted to the 50 scraper body engaging locking bars when positioned inwardly and preventing forward rotation of the scraper body.

2. In a scraper, a scraper body, a frame journaled thereto having a tongue, locking bars piv- 55 oted to the frame and pivotaily riding on said frame, a guideway in the tongue, a member slidable in such guideway, connecting members between slidable member and locking bars whereby when the slidable member is moved rearwardly the locking bars are pivoted outward, and when the member is moved forwardly the locking bars are pivoted inwardly, and stops mounted to the scraper body engaging locking bars when in inward position and preventing forward rotation of the scraper body.

3. In a scraper, a scraper body, a frame journaled thereto having a tongue, locking bars pivoted upon the frame, a member slidably supported by the tongue, connecting means between slidable member and locking bars which when the slidable `connected thereto for sliding it to rearward position.

FRANK ROSHAK.