US1566625A

US1566625A - Chabies a

Info

Publication number: US1566625A
Authority: US
Publication date: 1925-12-22
Anticipated expiration: 1942-12-22

Description

Patented Dec. 22, 1925.

UNITED STATES CHARLES A. srEARs, or OAKLAND, CALIFORNIA.

DEPTH REGnLAfii-oit roascnnrrne AND siTaFAcrnG MACHINES.

Application filed. November My invention is an improved depth regulater for scraping and surfacing machines.

The object of my invention is to provide an adjust-able shoe or bearing member adj acent the scraper buckets, whereby the depth of cut of said buckets may be determined. The adjustable shoe may be in the form of a skid or roller or tractor belt. The shoe is positioned relative to thescraper buckets so that it may be shifted rearwardly and if in the form of a skid or tractor belt will become inclined, that is, tilted up at the rearward end. This throws more weight on the forward end of the shoe and causes it to sink further into soft material to allow the scraper buckets to dig to a greater depth. Where a roller, or wheel is used to support the scraper, the wheel itself is shifted rearwardly and elevated so that the cutting buckets are lowered to make a deeper out.

Other objects and advantages will be more specifically pointed out and described in the following detailed description.

In the annexed drawing in which my invention is illustrated:

Figure 1 is a fragmentary side elevation of my regulator mounted on a scraper.

Figure 2. is a fragmentary side elevation of a modified form of regulator.

Figure 3 is a fragmentary side elevation of a still further modified form of regulator.

Referring more particularly to the drawing, the scraper buckets 1 are mounted on a conveyor 2, which is journaled in a frame 8, and suitably driven from a source of power (not shown, since this construction of the Scraper is well known). The conveyor and frame are mounted on a propelling machine such as a tractor, the frame of which is shown at 4. The frame 3 is pivoted at 5 to the support 6 secured to the frame 4. Ahorizontalscraper blade 7 is mounted on the end of the frame 3. A shoe 8 extends transversely of the machine, and is mounted rearwardly of the blade 7, and bears upon the ground,

a, 1924. Serial no. waste,

thus limiting the depth to which the blade will go, and preventing itfrom making an irregular cut. i

The shoe 8 is mounted at its forward end on arms 9, which are pivoted to the horizon tal members 10 of the frame? At the rear end the shoe is mounted on a link 11 pivoted thereto, and to the lower end of a hand lever 12. This hand lever is pivoted to thefr'ame 4L, and is held in position by a hand operated dog '13 extending into notches in a quadrant 14. V

hen it is desired to makeqa deeper cut the handle 12 is moved forwardly, which swings the rear end of the sh'oe Supwardly, and tilts it at an angle as shown in dotted lines in the drawing. Thescra per willnow ride on the forward rounded nose '15 of the shoe 8 and cut into the ground. When the desired depth is reached the shoe is again returned. to ahorizontal planeand the scraping continued.

WVhen the handle 12 is moved rearwardly, the lower end thereof engages the rear end of the member 10 and swings the frame 3 upwardly about the pivot 5 into non-operative position.

If desired the depth regulator instead of being a shoe as shown at 8 may bea wheel 16 mounted on a bar 17 secured to the arm 9 and pivoted to the link 11. The wheel may be regulated the same as the shoe 8.as previously described. V

As shown in Fig. 3 a tractor belt 18 may be utilized which is positioned between the arm 9 and link 11.

The action of both the wheel 16 and belt 18 is identical to the shoe 8.

It Will be noted on reference to Figure 1 that when the shoe or skid 8 is tilted that although the front portion or nose 15 is not elevated to a great extent, yet more weight is thrown on the rounded nose and on the forward part of the skid so that it will sink deeper into the ground, thus allowing the buckets to cut deeper.

The endless belt 18 functions in substantially the same way whereas with a wheel as shown in Figure 2, as this is positioned substantially midway between the arms 9 and the links 11, it will be raised considerably above its former position and thereby cause a deeper cutting action.

It will be noted that the frame 4t is substantially stationary with the frame 3 pivotally connected thereto by the pivot 5 and as the shoe 8 is rigidly connected to the arm 9 and the latter is pivotally connected to the frame 3, the raising of the rear end of the shoe 8 by the link 11 and the arm 12, which latter is pivoted to the stationary frame 4:, will tilt the shoe and therefore change the inclination of the frame 3, and hence the scraper buckets in reference to the stationary frame 4.

Having described my invention, I claim:

1. The combination with a surfacing machine having forwardly extending bucket excavators, a frame extending rearwardly therefrom, a shoe adapted to rest on the ground'and having the forward end pivotally connected to the frame, and having its rear end connected to said frame by a handle pivoted thereto, and a link pivoted to the end of the handle and to the end of the shoe whereby the shoe may be tilted in reference to the frame of the excavator.

2. The combination with a surfacing machine comprising a stationary frame, a sec- 0nd frame pivoted thereto, a series of conveyor and excavator buckets operatively mounted-on the second frame, a shoe pivotally connected at its forward end tothe second frame adjacent the lower end of the bucket conveyor and having its rear end operatively connected to the first mentioned stationary frame whereby the shoe may be tilted in reference to the second frame and thereby cause a tilting of the second frame in relation to the first mentioned stationary frame.

3. The combination with a surfacing machine comprising a frame, a bucket conveyor, a propelling mechanism, said frame be ing pivotally mounted on the propelling mechanism, of a shoe mounted adjacent the lower end of said conveyor and adapted to rest on the ground, an arm secured to said shoe and pivoted to said frame, a hand lever, a link pivoted to said hand lever and said shoe, said hand lever being adapted to engage said frame to swing it into non-operative position.

4;. The combination with a surfacing machine having a stationary frame, an excavator frame pivotally mounted thereon, a series of bucket excavators operatively mounted on the second frame, an arm pivotally connected to one of the lower members of the second frame, a shoe rigidly connected to the lower end of said arm, a handle pivotally connected to the stationary frame and links connected from said handle to the rearward end of said shoe whereby said shoe may be tilted relative to the stationary frame and thereby tilt the excavator frame relative to the stationary. frame.

In testimony whereof I afix my signature.

CHARLES A. SPEARS.