US2664729A - Hydrocarbon fuel burner - Google Patents

Description

Jan. 5, 1954 c. BRAMMING HYDROCARBON FUEL BURNER Filed Aug. 17.. 1950 2 Sheets-Sheet l INVENTORi M awn,

ATTORNEYS.

Jan. 5, 1954 c. BRAMMING HYDROCARBON FUEL BURNER 2 Sheets-Sheet 2 Filed Aug. 17, 1950 JNVENTOR. mmzry,

inary heating period, which fuel, when ignited, furnishes the necessary heating flame.

l'he ruel tank, indicated generally at l, consists oi a generally cup-shaped top member II which receives the concave bottom l2 at its open lower end. The top II has an indented ring l3 or generally semi-circular cross-section extending around its bottom portion. The bottom 12 has an upturned sioe portion l4 which mates with and extends around the portion or the top H below ring is. ihe portion or side l4 extending abov the lower margin of ring I3 is peened over as shown and a brazed head formed about the resultant edge to secure the bottom l2 in a sealed relation to top H.

The top I i has a circular hole [6 in its top conical lace. 'lhls hole reeclves the sleeve I! which snugly iits therein ano. is sealed thereto by a bead of solder or the like to Iorm a non-leaking oint. The sleeve II has external threads l8 near its upper edge which mate with and receive the corresponding threads is or the pump-supporting top cap 20.

The to cap is attached to the washer 2| which has an annular groove 22 which nts snugly over the upper edge or the sleeve ll. A packing washer or gasket 23 1S sandwiched between these parts to Iorm a tight seal. on its inner edge, the washer 2| is amxed to the depending pump tube :4 which extends into the tank I. This washer receives cap 25 at its bottom end, which cap has an air outlet port 26 and a one way valve 2?. Pipe 28 extends :trom the outlet of sleeve H to deliver air direct to the space immediately beneath washer 2|.

As shown in the drawing, the valve 2'! includes imparted to the handle 33 and is urged downwarcily by the spring 34 which, at the upper limits of plunger movement, bottoms against top cap 23. It will be observed that the pump forces air directly into the spac immediately below the washer 2i. This has the advantage of placing air at the point at which cap 20 is attached so that leakage, if it occurs, is air leakageand not gasoline leakage. Moreover, this construction minimizes the opportunity for gasolineto gain access to the valve 21 orthe pump.

It will be noted that .thepump construction utilizing the cap 20 and'washer 2| maybe removed from the tank I by unscrewing cap 20, thereby providing an opening through the sleeve H for refueling the tank I. Consequently itis unnecessary to provide a separate tank-filling opening. 7

The top part II of the tank i has a centrally disposed circular aperture 35 which snugly re- This sleev is soldered or ceives the sleeve 36. otherwise secured to the tank I to define a fluid tight seal. In turn, it receives the lower portion 3! of the housing 38, this part being removably held in sealed relation to the sleeve 36. In the structure shown, this sealed relation is established by complementary threads on these parts which force the seating parts to a snug fit when housing 38 is rotated relative to the sleeve 36.

A pair of pipes 39 and 40 depend from the housing 38 and extend into th fluid fuel in the tank I. As seen best in Figure 2, these pipes are secured to the ported connectors 4| and 42 which are in turn threadedly secured to the bottom portion 37 of the housing 38.

The central portion of the housing 38 has a circular horizontal bore 43. A pair of passages 44 and 45 extend downwardly from bore 43 and at their lower ends expand into the chambers 46 and 47, respectively, these chambers terminating in the internally threaded portions of housing 38 which receive the connectors 4| and 42.

Intermediate the passages 44 and 45, the housing 38 has an upwardly extending passage 48, which passage has a slightly enlarged portion 49 at its upper end to receive the generator tube 3. A cap 50 is threadedly secured to the upper endof the housing 38 and overlays annular wedge 5 i. As the cap is tightened, the wedge 5| is driven down against pipe 3 to force it to a snug fluid tight fit in the housing 38.

At its lower portions, the generator pipe 3 receives glass wool material 52, this material being held in position by the screen 53, which seats against the constructed portion 54 of the tube 3. At its upper end, the tube 3 is received in the nozzle housing 8 which has a T-shaped bore 5fi-5'l58, Figure 5, portion 56 being in registry with the tube 3. The vertical bore 58 threadedly receives the nozzle sleeve 59 at its lower end, which nozzle sleeve in turn threadedly receives the nozzle tip 60 which has a very small port 6| through which the fuel passes into the mixing tube 9.

The mixin tube 9 is threadedly secured to the bottom margin of the skirt 62 formed on the nozzle housing 8. This skirt surroundsthe nozzle opening or port BI and behind the nozzle port (as seen in Figure 1) receives air tube 63, the interior of this tube being seen at 64, Figure 1. As the fuel (in a vapor state during normal operation) issues from the nozzle port 6|, it draws air from the air tube 63 and mixes therewith in the mixing tube 9. The resultant mixture burns within the mantle 5 to heat the same to incandescence.

Impurities in the fuel tend to clog the minute port 6| in the nozzle housing 8. In order to prevent such clogging, the shaft 35 is disposed in the bore 58 and carries a small thin wire 66 which,

when inserted in the port Bl, cleans the same. At its upper end, the shaft B5carries cross head 63 which has an opening 61. The end 68 of the rocker shaft indicated generally at 69 fits in this opening to impart up and down movements to the shaft '65 when the rocker shaft is rocked about a horizontal axis.

The handle 73 is pinned to the free end of the rocker shaft 69 as shown and extends at handle H to an accessible point for hand operation. When it is desired to clean the port 6:, the handle H is worked up and down.

The rocker shaft 69 is held in sealed relation to the housing 8 by the ball portion 72 which mates with and receives the cupped inner margin .of the washer l3. The washer i3 is held snugly against theball 12 by the sleeve 15 which is threadedly secured to the housing 55. A resilient washer I4 is sandwiched between the washer 13 and sleeve 75 to maintain a snug seal.

Operation of the lantern is controlled by the handle '16, Figure 2, which is located on the end of the cam shaft TI. This shaft is received in the bore 43 and is somewhat smaller than that bore to permit free flow of the gasoline about the portion I09 is just below the threaded portion I08 of column I06. At this point the column forms a shoulder H5. The bail H4 is then rotated to turn the hood and the portion Hi9 thereof so that when released, it seats on the shoulder H5 to rest in the elevated position shown in Figure 7.

The central portion I09 of the hood '3 is held in the elevated position of Figure 7 by reason of the non-circular shape of the column H16 as seen in Figure 6 and the mating non-circular shape of the opening HS in hood I at portion I09. In the elevated position, the hood is rotated so that the opening H6 does not mate with the column Hit and consequently the hood is suspended from the shoulder H5.

The globe or chimney 5 is sustained from the hood 1 so that if the hood is lifted, the globe is lifted in unison with it. The skirt portion 1 iii of the hood I has a seat defining peripheral indentation III which receives the globe support ring H2. The ring H2 has a series of adjacent portions extending between inner and outer radial dimensions and in the seated condition bears against the wall defined by the upper enlarged rim H3 of the globe 6 and the seat HI to suspend the globe from the hood.

The mantle mounting it, Figure 1, consists of a flared sleeve having an upper portion ii? of size to be received by the mixing tube 9. The latter tube has a protuberance H6 which receives the mating enlargement ill of the sleeve I l 5 to secure the mounting in place. At its lower margin the mantle mounting receives the mantle 5 which is tied thereto in the usual fashion.

While I have shown and described a specific embodiment of the control mechanism of the present invention as applied to a gasoline pressure mantle lantern, it will of course be understood that many modifications and alternative constructions may be made without departing from the spirit and scope of my invention and that the mechanism shown may be applied to other devices such as gasoline pressure stoves. I therefore intend by the appended claims to cover all modifications and alternative constructions coming within the true spirit and scope thereof.

What I claim as new and desire to secure by Letters Patent of the United States is:

1. A three position control mechanism operable to deliver hydrocarbon fuel from a tank to a burner comprising in combination, a housing defining a valve control cavity, means defining a fluid passage from the cavity to the burner, means defining a pair of fluid passages from the cavity extending into the fuel, each of the last passages defining a seating face adjacent the cavity, valves in said passages adapted to seat on the respective faces to close off the passages, spring means operable to urge the valves to seated positions, means associated with one of the last passages operable to atomize fuel passing therethrough, a handle outside the housing having a shaft portion extending into the cavity to points in registry with the last passages, the shaft portion defining cam elements in registry with the last passages, and cam followers extending from said cams to their respective valves, the cams and valves being so constructed and arranged that in one handle position both valves are closed, in a second handle position one is closed and the other opened, and in a third handle position said one valve is opened and the other closed.

2. A three position control mechanism operable to deliver hydrocarbon fuel from a tank to a burner comprising in combination, a housing having a cylindrical bore, means defining a fluid passage from the bore to the burner, means defining a pair of fluid passages from the bore extending into the fuel, each of the last passages defining a seating face adjacent the bore, valves in said passages adapted to seat on the respective faces to close off the passages, spring means operable to urge the valves to seated positions, means associated with one of the last passages operable to atomize fuel passing therethrough, a shaft of smaller diameter than the bore and extending into the bore, the shaft defining cams in registry with the last passages, respectively, and cam followers extending from said cams to the respective valves, the cams and valves being so constructed and arranged that in one position of shaft rotation both valves are closed, in a second position one valve is closed and the other opened, and in a third position said one valve is opened and the other closed.

3. A mechanism to deliver liquid hydrocarbon fuel from a container to a burner of the vapor type comprising in combination, a housing having a cavity, means defining a fuel passage from the cavity to the burner, means defining a pair of fluid passages extending from the cavity into the fuel and each having an enlarged portion spaced from but adjacent to the cavity, valves in the enlarged portions of the last passages, respectively, and adapted to seat on the faces adjacent the cavity to obstruct passage of fuel thereto, springs seated against the valves and the faces of the enlarged portions remote from the cavity operable to urge the valves to seated positions, a control shaft extending into the cavity and defining a pair of cams in registry with the last passages, respectively, and cam followers in the last passages extending from the cams to the valves, respectively, the cams and the cam followers being constructed and arranged so that in one shaft position both valves are released to close, in a second shaft position one valve is retracted against the bias of its spring while the other valve is released and in a third shaft position said other valve is retracted while said one valve is released.

4. In a mechanism to deliver liquid hydrocarbon fuel from a container to a burner of the vapor type comprising in combination, a housing having a cavity, means defining a fuel passage from the cavity to the burner, means defining a pair of fluid passages extending from the cavity into the fuel and each having an enlarged portion spaced from but adjacent to the cavity, valves in the enlarged portions of the last passages, respectively, and adapted to seat on the faces thereof adjacent the cavity to obstruct travel of fuel thereto, springs seated against the valves and the faces of the enlarged portions remote from the cavity operable to urge the valves to seated positions, a control shaft extending into the cavity and having a pair of eccentric camdefining portions in registry with the last passages, respectively, the eccentric portions being substantially circular in shape and oriented substantially degrees from each other, and cam followers in the last passages seated against the eccentric portions of the shaft and the corresponding valves and operable at the point of maximum radius of each eccentric portion to open the corresponding valve against the bias of its spring.

5. In a mechanism to deliver liquid hydrocarbon fuel from a container to a burner of the vapor type comprising in combination, a housing having a cavity, means defining a fuel passage from the cavity to the burner, means defining a pair of fluid passages extending from the cavity into the fuel and each having an enlargedportion spaced from but adjacent to the cavity, valves in the enlarged portions of the last passages, respectively, and adapted to seat on the faces thereof adjacent the cavity to obstruct travel of fuel thereto, springs seated against the valves and the faces of the enlarged portions remote from the cavity operable to urge the valves to seated positions, a control shaft extending into the cavity and having a pair of eccentric camdefining portions in registry with the last passages, respectively, the eccentric portions being substantially circular in shape and oriented substantially 120 degrees from each other, and cam followers in the last passages seated against the eccentric portions of the shaft and the corresponding valves and operable at the point of maximum radius of each eccentric portion to open the corresponding valve against the bias of its spring, and detent elements operable yieldably to hold the shaft in position to retract the valves or the aforesaid positions spaced 120 degrees therefrom.

6. A mechanism to deliver liquid hydrocarbon fuel from a container to a burner of the vapor type comprising in combination, a housing having a bore, means defining a fuel passage from the bore to the burner, means defining a pair of fluid passages extending from the bore into the fuel and each having an enlarged portion spaced from but adjacent to the bore, valves in the enlarged portions of the last passages, respectively, and adapted to seat on the faces thereof adja- 10 cent the bore to prevent travel of fuel thereto, spring seated against the valves and the faces of the enlarged portions remote from the bore operable to urge the valves to seated positions, a control shaft smaller in size than the bore extending into the bore and having a pair of eccentric cam-defining portions in registry with the last passages and an intermediate detentreceiving portion defining three holding points, the eccentric portions of the shaft being rounded in shape and each of the two portions having its point of maximum radius aligned with a corre sponding one of the detent holding points, and cam followers in the last passages seated against the eccentric portions of the shaft and the corresponding valves and operable at the point of maximum radius of each eccentric portion to open the corresponding valve against the bias of its spring, and a detent in registry with the detentportion of the shaft yieldably to hold the same in position.

CARL BRAMMING.

References Cited in the file of this patent UNITED STATES PATIH N IS Number Name Date 230,391 Fulton July 27, 1880 234,926 Perkins Nov. 30, 1880 816,669 Ludwig Apr. 3, 1906 930,020 Arneson Aug. 3, 1909 1,245,165 Tharp et a1 Nov. 6, 1917 1,511,669 Grady Oct. 14, 1924 1,880,177 Kohler et al Sept. 27, 1932 2,129,100 Pickup Sept, 6, 1938 2,362,342 Baker et al. Nov. 7, 1944 2,375,886 Baker et al May 15, 1945 2,431,665 Tullis Nov. 25, 1947

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