US3080800A

US3080800A - Heated asphalt rollers

Info

Publication number: US3080800A
Application number: US29623A
Authority: US
Inventors: Gus E Malzahn
Original assignee: Individual
Current assignee: Individual
Priority date: 1960-05-17
Filing date: 1960-05-17
Publication date: 1963-03-12
Anticipated expiration: 1980-03-12

Description

March 12, 1963 G. E. MALZAHN 3, 0,

- HEATED ASPHALT ROLLERS R Filed May 17, 1960 2 Sheets-Sheet l Gus E. Ma/zahn INVENTOR.

. 9 BY gimp L M March 12, 1963 G. E. MALZAHN 3,080,800

HEATED ASPHALT ROLLERS Filed May'1'7, 1960 2 Sheets-Sheet 2 Q Q2 .&

1N VEN TOR.

Man/3i... BY ym; 3%

United States Patent 3,080,800 HEATED ASPHALT ROLLERS Gus E. Malzahn, P.0. Box 66, Perry, Okla.

Filed May 17 1960, Ser. No. 29,623 4 Claims. (Cl. 94-50) This invention relates to heated rollers used for finishing asphalt surfaces.

It is therefore a primary object of this invention, to provide a roller for compacting asphalt surfaces by the weight of the roller and simultaneously applying heat to the asphalt.

A further object of this invention in accordance with the foregoing object, is to provide a heated asphalt roller having a novel burner disposed within the roller being supplied with gas from a tank mounted on top of the roller hood.

Another object of this invention in accordance with the foregoing'objects, is to provide a heated asphalt roller having theadvantage of being readily suspended for transport purposes.

A still further object of this invention is to provide a heated asphalt roller wherein the loss of heat from the roller is considerably restricted.

In accordance with'the foregoing objects, the roller in accordance with this invention, includes a hood which encloses and rotatably mounts the roller, said roller being almost completely enclosed by the hood so as torestrict the loss of heat therefrom. A gas burner is disposed within the roller for heating thereof and is sup-plied with gas from a tank mounted in a novel and advantageous manner, directly above the hood by means of a mounting seat secured to the top of the hood while the tank is secured in its position by means of a clamp connected to a handle extending upwardly and rearwardly from a bracket connected to the hood. The handle is extensible and has an {adjustable bracket connected thereto enabling the roller to be suspended from the side of the bed of a truck.-

These together with other objects and advantages which will become subsequently apparent reside in the details of construction and operation as more fully hereinafter described a'rid claimed, reference being had to the accompanying drawings forming a part hereof, wherein like ,numerals refer to like parts throughout, and in which:

' FIGURE 1 is 'a perspective view of the heated asphalt [roller in'acco'rdance with this invention.

1 FIGURE 2 is atop view of the roller with the gas tan 'fremov'ed therefrom;

FIGURE 3 is a side elevational view'of the roller.]l

' FIGURE"4 isa front 'view of the roller with the gas .tank 'r'emovedtherefr'om. I

FIGURE '5 tea" vertical central longitudinal sectional view taken through the roller'and roller hood FIGURE' 6' is" a vertical transverse sectional view through the roller taken-th roughaplane indicated by- ESQ iQU-HQQQ-TU IGURES. 1. I

Referring to the drawing in detail, reference numeral 10 generally indicates the roller in accordance with this invention. Referring to FIGURE 1, the roller 10 includes a hood generally indicated by reference numeral 12, a handle section 14, a roller generally indicated by reference numeral 16 extending below the hood 12 for contact with the asphalt surface to be rolled and a gas tank 18 vertically supported on the hood 12 for supplying gas to a burner located within the roller 16 as will be hereafter explained.

A bracket member 19 is disposed along the length of the hood 12 rearwardly thereof and has a pair of tubular members 20 secured thereto as by welding at either end of the bracket 19. A pair of bent members 22 are welded to the top of the hood forwardly thereof and are slidably engaged within the tubular members 201 secured to the bracket 19 as more clearly seen in FIGURES l and 3.

The handle portion 14 is connected to the bracket 19 and extends rearwardly and upwardly therefrom. The handle portion 14 includes a tubular member 24 within which a rod member 26 is adjustably mounted and is extensible so as to elongate the handle 14 to any desired height. The end of the rod 26 terminates in a handle portion 28. The handle 14 is maintained in adjusted position by means of a tubular member 30 through which a bolt 34 extends in alignment with apertures 29 in the outer tubular member 24 and corresponding apertures in the extensible rod member 26 for holding the tubular member, and rod 26 in adjusted position relative to the outer tubular member 24. Connected to the bottom of the tubular member 30 is a bracket member 32 by means of which the roller may be suspended from the side of a truck bed.

In order to position the gas supply tank 18 in illustrated vertically aligned position, an annular sealing member 36 is secured to the top of the hood 12 as clearly shown in FIGURE 4, with the bottom of the gas tank being seated therein in perfect vertical alignment above the hood 12 so that the weight of the tank 18 will be useful to increase the compacting weight of the roller without imposing an additional load for the roller operator to support on the handle. In order to clamp the tank 18 in position, a semi-cylindrical annular member 38 is provided, said member 38 being connected to a tubular member 42 which is connected to the handle member 24 and braced by web member 44. A chain 40 is connected to the member 38'so as to lock the tank 18 against the member 38 in accurate vertically aligned position.

Referring now to FIGURE 5, the roller 16 is rotatably mounted within the hood 12 by means of a pair of

axle stub shafts

46 and 48 connected to the sides-of the hood 12. Within the axle shaft 48 connected to side of the hood 12, is a passage 50 communicating with a gas inlet nozzle 52 threadedly connected at one end of the stub shaft 48 while the inlet conduit 54 is connected to the passage 50 by means of a fitting, said conduit 54 being connected to the top of the gas tank 18 for supply of gas therefrom into and through the nozzle 52. The nozzle 52 thereby supplies gas to the burner located within the roller 16. The burner comprises a tubular member 62 which is connected to the side wall 56 which is connected to the ;roller 16 by means of angle plates 58 secured to as by welding to the inner walls of the roller 16 and by means of bolts 60 to; the side wall 56 as shown in FIGURE 6. Connected to the inner end of the tubular member 62, is

a flame directing member 66 welded to the tubular member-62 but having passageways 68 through which the flame is directed into the space between the-inner walls of the roller 16 and the outer surface of the tubular member 62 for more efficient heating of the rolling surface of the roller. Coaxially mounted within the tubular member 62 is a venturi type nozzle member 70 connected to the tubular'member 62 by radial members 64 through which air may pass into the tubular member 62 while air enters passageways 76 at one end of the venturi member 70 located in the end plate 72 of the venturi member 70 which end plate is connected to a sleeve member 74 through which the stub shaft 48 extends to thereby support the end of the roller 16 to which the burner is attached. Accordingly, the incoming air through passages 76 and gas from nozzle 52 is to flare out as indicated by the arrows in FIGURE 5, while passing through the venturi member 70 while burning. Annular slots 78 are provided in wall 56 of the roller which are in radial and axial alignment with the slots 84 in the side 80 of the hood, said side 80 also having inner radial slots 86, for air intake purposes.

From the foregoing description, operation of the roller will be apparent. It will therefore be appreciated, that by reason of the novel arrangement of roller components and the novel burner unit located within the roller an unexpectedly high compaction is realized when rolling asphalt with this roller. Furthermore, the adjustable features and restriction in the loss of heat from the roller because of the more complete enclosure by the hood, makes the roller in accordance with this invention more 'eflicient and more widely useful than was heretofore possible.

The foregoing is considered as illustrative only of the principles of the invention. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction and operation shown and described, and accordingly all suitable modifications and equivalents may be resorted to, falling within the scope of the invention as claimed.

What is claimed as new is as follows:

1. A heated asphalt roller suitable for rolling asphalt pavement comprising, bracket means rigidly connected to a hood means, roller means journaled within said hood means, extensible handle means connected to said bracket means, seating means mounted on said hood means vertically positioning and supporting a gas supply reservoir means directly above said hood means, removable clamp means attached to said handle means for clamping said gas supply means in position, gas burner means mounted within said roller means at one end thereof and operatively connected by conduit means to said gas supply means and exhaust passage means at the ends of said roller means and hood means, registerable whereby exhaust gases may be conducted away from the vicinity of the gas supply reservoir means, said gas burner means including 'a tubular member mounted at one end on said one end of said roller means, a fiame directing member connected to the other end of said tubular member, venturi passage means rigidly fixed to said tubular member and disposed centrally therewithin, a gas inlet nozzle connected to said supply means and disposed within said venturi passage means, and air inlet means between said nozzle and one end of said venturi passage.

2. A heated asphalt roller suitable for rolling asphalt pavement comprising, bracket means rigidly connected to a hood means, roller means journaled within said hood means, extensible handle means connected to said bracket means, seating means mounted on said hood means vertically positioning and supporting a gas supply reservoir means directly above said hood means, removable clamp means attached to said handle means for clamping said gas supply means in position, gas burner means mounted within said roller means at one end thereof and operatively connected by conduit means to said gas supply means and exhaust passage means at the ends of said roller means and hood means, registerable whereby exhaust gases may be conducted away from the vicinity of the gas supply reservoir means, said hood means enclosing more than half of the roller means, said gas burner means including a tubular member mounted at one end on said one end of said roller means, a flame directing member connected to the other end of said tubular member, venturi passage means connected to said tubular member and disposed centrally therewithin, a gas inlet means connected to said supply means and disposed within said venturi passage means, first air inlet passage means disposed between said venturi passage means and said tubular member and second air inlet passage means disposed between said gas inlet and said venturi passage means.

3. A gas burner for a cylindrical asphalt roller rotata-bly mounted on axial stub shafts fixed to a roller hood, comprising a tubular member coaxially mounted to one end of said roller, a flame directing member connected to said tubular member at an inner end thereof, a venturi nozzle coaxially mounted to and within said tubular member having an inner end spaced from said flame directing member and a gas inlet nozzle mounted in one of the axial stub shafts on which the roller is journaled, coaxially extending into said venturi nozzle, exhaust passages dis posed in one end of said roller, and said one stub shaft and gas nozzle projecting into and rotatably mounting said venturi nozzle.

4. A heated asphalt roller suitable for rolling asphalt pavement comprising, bracket means rigidly connected to a hood means, roller means journaled within said hood means, extensible handle means connected to said bracket means, seating means mounted on said hood means vertically positioning and supporting a gas supply reservoir means directly above said hood means, removable clamp means attached to said handle means for clamping said gas supply means in position, gas burner means mounted within said roller means at one end thereof and operatively connected by conduit means to said gas supply means and exhaust passage means at the ends of said roller means and hood means, registerable whereby exhaust gases may be conducted away from the vicinity of, the gas supply reservoir means, said roller' having circular ends and said hood having part circular ends directly adjacent said circular ends, said exhaust passage means comprising first arcuate slots in at least one of said circular ends and second arcuate slots in at least one of said part circular ends adjacent said one circular end, said first and second slots becoming axially aligned during rotation, of said drum.

References Cited. in the file of this patent UNITED STATES PATENTS 1,053,572. Chatfield Feb. 18, 1913 1,463,962 McClintock Aug. 7, 1923 1,878,427 Ronstrom Sept. 20, 1932 2,294,168 Francis et al Aug. 25, 1942 2,626,496 Ritzert Jan. 27, 1953 2,664,683 DeCato Jan. 5, 1954 2,902,270 Salomonsson et al Sept. 1, 1959 2,954,954 Larson Oct. 4, 1960 2,990,755 Caufie ld July 4, 1961 3,007,379 Ellis Nov. 7, 1961 FOREIGN PATENTS 549,995 France Dec. 4, 1 922

Claims

3. A GAS BURNER FOR CYLINDRICAL ASPHALT ROLLER ROTATABLY MOUNTED ON AXIAL STUB SHAFTS FIXED TO A ROLLER HOOD, COMPRISING A TUBULAR MEMBER COAXIALLY MOUNTED TO ONE END OF SAID ROLLER, A FLAME DIRECTING MEMBER CONNECTED TO SAID TUBULAR MEMBER AT AN INNER END THEREOF, A VENTURI NOZZLE COAXIALLY MOUNTED TO AND WITHIN SAID TUBULAR MEMBER HAVING AN INNER END SPACED FROM SAID FLAME DIRECTING MEMBER AND A GAS INLET NOZZLE MOUNTED IN ONE OF THE AXIAL STUB SHAFTS ON WHICH THE ROLLER IS JOURNALED, COAXIALLY EXTENDING INTO SAID VENTURI NOZZLE, EXHAUST PASSAGES DISPOSED IN ONE END OF SAID ROLLER, AND SAID ONE STUB SHAFT AND GAS NOZZLE PROJECTING INTO AND ROTATABLY MOUNTING SAID VENTURI NOZZLE.