GB254306A - Improvements in or relating to lubricating devices for internal combustion engines - Google Patents

Abstract

254,306. Rolls-Royce of America, Inc., (Assignees of Olley, M., and Hulley, W. H.). June 23, 1925, [Convention date]. Controlling flow of lubricant; force-feed lubricating.-In an internal-combustion engine having a main oil feed system for the normal lubrication of the engine, an auxiliary system is supplied with oil through a valve controlled by the fuel enriching device of the engine and by the throttle valve of the engine. The main feed systern comprises a pipe 13, Fig. 2, supplied by a pump from the crank case and delivering to the several parts of the engine, while the auxiliary system comprises branch pipes 2 leading from a pipe 3 supplied from the pipe 13 through a valve 14. The pipes 2 deliver direct into the interior of the cylinders or to nozzles discharging against the connecting-rods, whereby the oil is splashed into the cylinders. The valve 14 is normally closed by a spring 45, Fig. 5, and is adapted to be opened by a pivoted lever 15 connected by a rod 16 to an arm 17 on a shaft 18 mounted in a bracket 19, arms 20, 22 on the shaft being connected by rods 21, 23 to the accelerator pedal and throttle lever respectively. The valve is also adapted to be opened by a pivoted lever 24 connected by an adjustable rod 25 to a forked member 26 freely mounted on a shaft 28 provided with an arm 29 connected by a rod 30 to the control lever 8 of a fuel enriching device 6, a pullrod 32 for operating the enriching device being connected to an arm 31 on the shaft 28. The free end of the lever 24 rests on the stem of the valve 14 and beneath the free end of the lever 15. When the enriching device 6 is temporarily operated, on starting the engine, an arm 27 on the shaft 28 contacts with and depresses the end of the rod 25, causing the valve 14 to open and allowing additional oil to be supplied to the cylinders. Opening of the throttle valve beyond a predetermined amount causes the end of the lever 15 to depress the end of the lever 24 and open the valve. Since the rod 25 and lever 24 are free to move downwards, the arm 27 and the lever 15 may each operate the valve independently of and without disturbing the other. The Specification as open to inspection under Sect. 91 (3) (a) comprises also an arrangement in which a thermostatic device 60, Figs. 6 (Cancelled) and 8 (Cancelled), comprising a bellows member 61 filled with liquid and having a stem 62, is mounted on the engine casing. The stem bears against an arm 63 on a shaft 64 provided with another arm 65 having a forked end emgaging a head on the stem of the valve 14. A spring connected between the arm 65 and a bracket 67 tends to depress the arm 65. When the engine is cold, the contraction of the member 61 allows the spring to depress the arm 65 and open the valve, but, when the engine, is sufficiently heated, the expansion of the member 61 causes the arm 65 to rise. The free end of the lever 15, connected to the throttle control mechanism, is arranged, above the valve stem between the forks of the arm 65. This subject-matter does not appear in the Specification as accepted. Specifications 3731/09, 3940/09 and 3841/09 are referred to.