US1404380A - Attachment for road rollers - Google Patents

Description

D. ERTER. ATTACHMENT FOR ROAD ROLLERS- v APPLICATION FILED OCR 2 I919- RENEWED MAY 31, 1921-, 1 ,404,38(),' Patented Jan.'24, 1922.

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attorney;

D. ERTER. ATTACHMENT FOR ROAD RQLLERS. APPLICATION FILED OCT. 2. 1919. RENEWED MAY 31.1921.

1,404,380, Patented Jan. 24,1922.

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UNITED STATES PATENT OFFICE.

DAVID ERTER, OF SPRING-FIELD, OHIO, ASSIGNOR OF 0NE-HALF TO BERT M. KENT, OF CLEVELAND, OHIO.

ATTACHMENT FOR ROAD ROLLERS.

Specification of Letters Patent.

Patented Jan. 24, 1922.

Application filed October 2, 1919, Serial No 327,838. Renewed May 31, 1921. Serial No. 473,968

T 0 all whom it may concern:

Be it known that I, DAVID Enrnn, a citizen of the United States, and residing at Springfield, Clark County, State of Ohio, have invented certain new and useful Improvements in Attachments for Road Rollers, of which the following is a specification.

This invention relates to a device-which is designed to scarify or loosen up the surface of an old'roadbed preparatory to resurfacing it. In the form shown it con-' sists of an attachment adapted to be secured to. a road roller, and may be secured to the water tank as illustrated in Figure 1 of the drawings. The device embodies a row of scarifier teeth which may be reversed in position to act properly when the road roller is moving forward, or when the road roller is moving backward, the row of teeth being inclined downwardly and forwardly for the forward movement, and downwardly and rearwardly for the backward movement. The device furthermore includes simple, efficient, and easily operated means for adjusting the scarifier teeth and for yieldingly ressing them down so as to engage the roadbed. The novel features will be apparent from the following description taken in connection with the drawings. In the draw- 1ngs Fig. 1 is a side view of the device secured to the rear end of a road roller;

In the drawings represents the rear end of a water, tank ofa road roller carried by" the wheels 11, and my'invention is shown as secured to the rear end of this tank. It will, of course, be understood that my device may be secured on any moving vehicle.

The device embodies a fixed frame 12 which may be secured by any suitable means, 7

such as arms 13 and 14to the road roller or other vehicle, but is preferably mounted at .-a slightangle to the verticahextending :rdownwardly and rearwardly from the top.

This frame 12 has the side bars 15 and '16 which are. channel shaped on then faclng 'gle row of teeth in line, all

looking shaft or pin 41 s des so as to form trackways, as shown particularly in Figure 4. A sliding frame 17 has side bars 18, 19 which fit in and slide longitudinally in the grooves in the side bars 15 and 16, and it will be understood that the bars 18 and 19 are not so long as the grooves in which they fit. A steam cylinder 20' is secured in any suitable way'to the cross bars 21 and 22 of the main fixed frame, as for 1nstance, by the bolts 23. A piston works in the cylinder 20 and has the proectmg piston rod 24 which is connected at 1t s lower end to the sliding frame 17 by-the plvot pin 25 passing through the members 26, 27. The cylinder and piston may be operated by steam or compressed air, and there is a four-way valve 28 above the cylinder for regulating and controlling the admission of the fluid under pressure to the ends of the cylinder to operate the piston, moving it up or down. Secured to and forming a part of the slidmg frame 17, there are side flanges 29, 30 projectmg rearwardly from said frame at its sides near the bottom. Extending across the machine and mounted in bearingsin said side flanges 29 and 30, there is a rotary shaft 31 which carries the scarifying teeth 32. The shaft 31 is formed with depressions at intervals transversely thereof of the same shape as half section of one of the teeth, as shown at 33. A. removable plate 34 fits over the top on the other side, and is secured to the shaft 31 by bolts 35 which serve to clamp the teeth in place, but permits removal when desired. In this device there is a sin a rojecting from the. same side of the shaft. imiting rollers 37 are secured on the ends of the shaft 31 to regulate the depth of the scarifying action.

The shaft 31 has secured to it arms 38, 39 on the inside and closely adjacentto the flanges 29 and 30, and these arms are provided with openings at their ends to receive a fastening pin. It will be understood that they move over the inner faces of the flanges 29 and 30 when the shaft 31 is turned, and the flanges '29 and 30 are provided with openings 40 in an arc in line with the openings in the ends of the arms 38 and 39. A passes through the openings to and the openings in the'ends of the arm 38 and locks the shaft 31 in any adjusted position. It will, of course be un-' derstood that any number of adjustments may be provided which are deemed necessary, but in practice I prefer to operate the teeth at an angle of about 80 to the vertical.

It is believed that the operation of the device will be apparent from the foregoing description. When it is desired to operate when the machine is moving forward, the

shaft 31 and teeth 32 are turned to an angle of about 30 to the vertical projecting forwardly, and .when it is desired to operate when the machine is backing, as is often the case on hills, the shaft 31 and the teeth are turned to an angle of about 30 projecting rearward ly. The change in the adjustment is very slmple and easy, and it will be observed'that the structure of the device is such that it will operate easily and certainly in reciprocating the scarifier shaft and its teeth with less chance of getting out of order and with no chance of undue wear.v The fluid pressure operating mechanism, of course, furnishes a yielding pressure downward on the-scarifying teeth.

Having thus described the invention what I claim as new and desire to secure by Letters Patent is:

'1. A reversible scarifier for road rollers when turned, means for securing said arms to said flangesin various ad usted positlons,

to .make said teeth project either forward or backward at an angle to operate either on a forward movement or a rearward movement, and'means foryieldingly passing said slidingv frame downwardly to make said teeth engage the road bed. 7

5 2. scarifier for road rollers comprising a supportingframe adapted to be secured to a road roller and having facing groovei lilre trackways facing each other at the sides extending :downwardly and rearwardly at an angle, a sliding frame having side bear- 55.. ,fluid pressure mechanism secured to. said supporting frame at the central top portion mg portions. travelling in said trackways,

above said sliding frame and provided with apistonrod connected at its lower exposed end toj said sliding, frame to move it up and gilOWIl, l eans' forcontrolling said fluid pressure mechan sm. to move said sliding frame up fand down, and a shaft carried bysaid fs liding frame at its bottom provided with pro ecting scarifier teeth.

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3. A reversible scarifier for road rollers comprising a supporting frame adapted to be secured to a road roller. and having facng groove-like trackways facing each other at the sides extending downwardly and rear wardly at an angle, a sliding frame having ide bearing portions travelling in said trackways, fluid pressure mechanism secured to said supporting frame at the central top portion above saidsliding frame and provided with a piston rod connected at its lower exposed end to said sliding frame to move it upand down, means for controlling said fluid pressure mechanism to move said sliding frame up and down, side rearwardly projecting flanges onsaid sliding frame at the bottom, a shaft mounted to turn in said flanges, a row of scarifier teeth projecting from said shaft, radiating arms secured to said shaft and movable over the inner faces of said flanges and an adjusting rod adapted to pass through said flanges and said arms to secure said shaft in position with the teeth projecting forwardly at an angle or rearwardly at an angle.

4. A scarifier for road rollers comprising a supporting frame adapted tobe secured to a road roller and havingparallel vertically extending. trackways thereon, a sliding frame having side bearing portions traversing said trackways, scarifier teeth carried by said sliding frame, and cushioning means cooperating with said sliding frame and yieldingly resisting movements thereof from its working position. I j

V 5. A scarifler for road rollers comprising a supporting frame adapted to be secured to a road roller and having parallel vertically extending trackways thereon a sliding frame having side bearing portions traversin said trackways, scarifier teeth carried by said sliding frame, fluid pressure means cooperating with said sliding frame and adapted to raise=-and lower the latter and'to yieldingly resist movements thereof from its working position, and means for controlling said fluid pressure means.

6. A scarifier for road rollersjcomprising a supporting frame adapted to be secured to a road roller and'having parallel vertically extending trackways thereon, a sliding frame having side bearing portions traversmg said trackways, scarifier, teeth carried by said sliding frame, means for adjusting.

the angular relation of said teeth to the ground so that the scarifler is operable on forward or rearward movement of the roller, and cushioning means cooperating with 'said'sliding frame and yieldingly resisting movements thereof from its working position.

7. A. 'scarifijer-for road rollers 'comprisin a supporting frame adapted to'be secure to a roadroller and'having parallel vertieally extending trackways thereon, a sliding frame having side bearing portions traversing said trackways, soarifier teeth carried by said sliding frame, means for adjusting the angular relation of said teeth to the ground so that the soarifier is operable on forward or rearward movement of the roller, fluid pressure means cooperating with said sliding frame and adapted to raise and lower the latter and to yieldingly resist movements thereof from its working 10 position.

In testimony whereof I aflix my signature.

DAVID ERTER.

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