GB270875A - Improvements appertaining to carburettors for internal combustion engines - Google Patents

Abstract

270,875. Manners, W. H., Reynolds, J. C., Merwe, S. J. van der, and Rayner, E. G. P. April 6, 1926. Spray carburettors. - The throttle valve, the air valve and a screw-threaded fuel needle valve are actuated simultaneously by a single control from the dashboard, and the air valve may be actuated independently. The nozzle. 19, supplied from the float chamber, is controlled by the tapered end 18 of a needle valve 5 carried by a stem 12, an enlarged part 13 of which engages a screw-thread in a part 15 screwed into a boss 16 on the carburettor body. The needle valve stem carries a disc 20 and one arm of an L- shaped member 21, the depending arm of which is connected through a link 26 to a pin 9 on an arm 6 secured to the spindle 7 of the throttle valve 8. The control means 10, extending to the dashboard, is also attached to the pin 9. The disc 20 can be rotated relatively to the arm 21 and secured thereto by a screw 22 engaging one of a number of recesses 23 in the edge of the disc. The arm 21 is formed at its end as a pointer 24 and is adapted to be clamped to the disc by a nut 14. The air valve 11 is mounted on a spindle 29 which is under the influence of a spring 42 and carries a lever, the arms 30, 31 of which are secured by bolts 34, 35 to one side 33 of a yoke member 32, the other and shorter side 36 of which is connected by a link 37 and bolt 38, which may enter one of a number of holes 39, to the pin 9. The link 37 is slotted at 41 to pass over the bolt 38, against which bears an adjustable screw 40 provided with lock-nut 43. The spring 42 keeps the screw 40 and bolt 38 in contact, but the air valves may be moved independently of the link 37 by a connection 44, the bolt then sliding in the slot 41.