US1777141A - Carburetor and carburetor burner for oil gas - Google Patents

Description

- w. H. HOWDEN CARBURETOR AND CARBURETOR BURNER FOR OIL GAS Filed April 20, 1929 Sept. 30, 1930 r mmrm? IIIIIIIIIIIIIIJIIIIIII' Patented se t. 30, 1930 UNITED STATES.

PATENT OFFICE WILLIAM HAY HOWDEN, OF GLASGOW, SOOTLAND, AS SIGNOR OF ONE-HALF TO BURDONS LIMITED, '01 GLASGOW, SCOTLAND CABB'ITBETOB AND CARBURE'IOB BURNER FOR OIL GAS Application flled April 20, 1929, Serial No. 356,715, and in Great Britain April 26, 19 28.

This invention relates to oil gas carburetors of the type having inner and outer tubes for the passage of air and a fuel nozzle or nozzles for injecting fuel therein, in which term oil gas carburetors I also include what are termed oil gas carburetor-burners which are of the same construction as the said carburetors but are distinct therefrom in that they act not only to atomize oil and mix it with air but also serve as burners for the mixture they produce.

According to the present invention, I provide an oil gas carburetor of the type stated in which the fuel nozzle is made in parts, an

, inner part projecting through the inner tube of the carburetor and a complementary outer part which is separable from the said inner part but is adapted to communicate and constitute therewith the complete nozzle, the outer part of the nozzle being carried by the outer tube, and the inner tube with the inner part of the nozzle being capable of ready removal and replacement for cleaning and other purposes.

More'specifically, my improved carburetor comprises, in combination, an elbow-shaped casing, a transversely apertu'red outer tube constituting a fixed continuation of the said casing, a transversely apertured inner tube removably and concentrically supported in the said outer. tube, an inner fuel nozzle portion seated in the transverse aperture of the said inner tube, a complementary outer nozzle portion adjustably seated in the transverse aperture of the said outer tube, and a removable door in the said casing through which the inner tube and inner nozzle portion can be readily withdrawn and inserted.

Preferably, the outer part of the fuel nozzle is held in place by a screw coupling, so that the said outer part can be drawn outwards to permit or facilitate the removal of the inner tube by slackening or easing the said coupling outwards.

The removable door, cover or equivalent may be locked in position by means comprising lugs or the like adapted to engage, and be secured in, bayonet slots. If desired, themovable door may be associated with a rod or other support carryingin known manner a helical retarder. The said tube, also, may be provided with a handle to facilitate its withdrawal.

An embodiment of the invention as applied to an oil gas carburetor will now be de 65 scribed, by way of example, with reference to the annexed drawing, which is a View of the carburetor in longitudinal section.

The carburetor comprises an elbow casting 1 having an opening 2 coaxial with its 60 flanged end 3. An outer tube 4 is rigidly secured to the flanged end 3 of the casting 1 so as to project forwardly coaxial with the openin 2.

ithin the outer tube 4-, a coaxial inner 85 tube 5 is arranged, the tube 5 being provided with helical retarders 6 on the outside of its forward end and being also adapted to carry the inner part 7 of a two-part fuel nozzle, of which the outer part 8 is held in place in 70 the outer tube 4 by a screw-coupling 8.

The interior of the inner tube 5 is provided at the rear end with a helical retarder 9 which is secured to a rod 9 and is adapted to be slid a greater or shorter distance up the tube 5. The rear end of the tube 5 has fixed toit a handle 10 which tprojects rearwardly towards the opening 2 o the casting 1.

As will be seen, the fuel nozzle 7, 8 projects into the inner tube 5 at right angles, or substantially at right angles, to the axis thereof, the nozzle being arranged so that its obliquely-shaped end 7 is disposed as shown. \Vhen the parts 7 8 are in place and coupling 8 is screwed down, the outer part 8 bears with a close fit against the inner part 7 the tube 5 being supported by the retarders 6 and 9 so as to resist the pressure of the part 8 on the part 7.

The edge of the casting 1 adjacent to the 9 of openuzg' 2b onthescrew enIofthemdQ,thelugs13 being thereby drawn outwards, as shown, the return face of the bayonet slots 11.

As will be apparent, the construction described in the ing enables the helical retarder 9 and the mner tube 5 to be readily withdrawn from the carburetor whenever desired, and, with equal readiness, the said rts 9 and 5 can be re laced in sition. or example, in order to c ean the said arts, the lates 12 and 14 are removed and t e reer 9 is withdrawn, after which the screweoup 8? of the fuel nozzle is Blackened to 't the outer part 8 thereof to be drawn whereupon, by gripping the handle 10, inner tube 5 can be easi y withdrawn through the opening 2.

I claim: 1. An oil gas carburetor comprising the combination of an outer containing element,

a tubular inner element arranged within said etmtaining element, air inlet means forsaid eontainin element and inner element, an inner fue nozzle element rejecting at right angles into said inner tu ular element and having an obliquely-shaped end facing in the direction of the inlet air stream, an outer fuel nozzle ada ted tocommunicate with said inner fuel 11 e element, interlocking abutment means on said outer and inner fuel nozzle elements for holding said fuel nozzle elean obliquely-shaped mouth projecting at right angles into the inlet air stream, a separate outer fuel nozzle element situated in m d outer tube and adapted to communicate with said inner fuel nozzle element, a screw coupling for holding said outer nozzle element'seated in said outer tube, and a removable door in said "casing for ready insertion and removal of said inner'tube and inner fuel nozzle element.

3. An oil gas carburetor comprising the combination of a casing, an outer tube seco-axially with said outer tube; air inlet cured on said casing, an inner tube arranged means in said casing, an inner fuel nozzle element gorojectin at right angles into said inner tu and mod with an obliquelyshaped and a separate outer fuel noaale element-sea in said outer tube and adapted to communicate with said inner fuel nozale element, a screw coupling for holding said outer fuel nozzle element situated in said outer tube, interlocking means between said inner and outer fuel nozzle elements to hold said inner element in non-rotative position, andremovable door means in said casing.

In testimon whereof I aflix m si ure.

1AM HAY H EN.

Images