Patent GB-107693-A (GB)
Title: Improvements in Carburetting and Feeding Apparatus for Internal Combustion Engines.
Inventor: KELLY WILLIAM PATRICK
IPC: F02M17/16
Filed: 1916-08-31
Abstract: 107,693. Kelly, W. P., and Slattery, D. C. Aug. 31, 1916. Spray carburettors. -- Fuel from an annular float chamber 75, having an outlet 76 at the base of a well 12, is drawn upwards through a tube 11 by an elevator comprising, a tube 7 and radial vanes 4 mounted on a rotary shaft 1, and passes through openings 25 in a distributor 3 to a barrel or reservoir 2 having an annular fuel passage 27 with spraying orifices 27<1>. The distributor 3 and the barrel 2 are mounted on the shaft 1, which rotates in bearings 10, 17, and the barrel is divided by a partition 109. Opposite the orifices 27<1> are L-shaped screws 54 on which the fuel impinges. Air enters ports 106 in the upper part of the housing 16, and passes through ports 45<1> in the upper part of the barrel 2. An air-regulating valve 46 slides vertically in the barrel and is controlled by means of a collar 49, which has lugs 47 engaging a groove in the valve 46 and studs 50 movable vertically in slots 51. The valve 46 has one or more ports 45 coinciding with certain of the ports 45<1>, the rest of the ports 45<1> being opened by raising the valve. The air supply passes the orifices 27<1> and the resulting mixture pasess between conical casings 39, 41 and radial plates 36, 37 to one or more delivery ports 107 forming part of the housing 103. The casings 39, 41 and plates 36, 37 form a centrifugal air blower and are carried by a flange 30 on the barrel 2, and the casing 41 carries an annular trough 58 for the reception of unvaporized fuel escaping through a gap 57. From the trough, the fuel is conveyed by a tube 64, mounted in a fixed member 62, on to a plate 22 carried by the distributor 3 and having radial vanes 24 on its edge. Beneath the plate 22 are a plate 82 with a scoop 84 on its under surface and a lower plate 79 with scoops 81 a.nd an aperture 80, both plates being secured by screws to the sloping part of the well 12. Part of the fuel is directed by the scoops 84 and curved surfaces 78, 21 to the fuel passages 25 leading to the nozzles, and the remainder runs into the well 12 of the float chamber. The float chamber is provided with an air vent 88 and the distributor 3 with a vent 31 for the reservoir 2. Hot water or exhaust gases circulate through a jacket 100 in the base 69 of the housing 103. In a modification, the fuel is raised from the float chamber by a conical member having tubular passages. Fuel draining into a trough such as 58 is returned to the float chamber by fixed tubes opening over a curved perforated gutter on the wall of the float chamber. The float is enclosed by annular partitions spaced from the sides and bottom of the chamber by vanes or ribs. Provisional Specification 12314/16 states also that (1) the nozzle outlets may be regulated by means of a sleeve; (2) the tube enclosing the vanes of the rotor may have external vanes; (3) the housing may have upper and lower parts with separate delivery ports, one for fuel mixture and the other for extra air, or may have multiple delivery ports; (4) the gutter for unvaporized fuel may throw the fuel against the wall of the housing, which has a gutter leading to the well of the float chamber.