Patent GB-500346-A (GB)
Title: Internal combustion apparatus for raising or forcing liquids
IPC: F04F1/16
Filed: 1937-05-05
Abstract: 500,346. Explosion pumps. DIAMAND, W. (Diamand, W.) May 5, 1937, Nos. 12877 and 12878. [Class 102 (ii)] [Also in Groups XXXIII and XXXII] Hydraulic propulsion apparatus for ships of the kind in which a single inlet water pipe feeds multiple delivery devices is provided with a rotary device for successively connecting and disconnecting the inlet pipe from the delivery pipes. An inlet pipe 1 with an outlet to the sea is connected by leads 2 with multiple delivery pipes 6 through the intermediary of a rotary member 4. This member is provided with a valve device 26 for the admission of compressed gases or of a combustible mixture to a delivery pipe 6 when its contents are to be forced rearwardly. The rotary member is driven by worm-gearing 8 and hollow shaft 7 from a suitable engine and its surfaces are provided with packing for close contacting with a casing in which it revolves. In order that closure of the opening of a given delivery pipe shall be rapid there is carried adjacent to the valve a plate member 15 pivoted at 14 which is drawn rapidly over the opening by a suitable cam gear. The pipes 6 are given a flattened-8-form and the outer ends may be adjustable. Furthermore their periphery at the outer ends may be provided with slits. The whole apparatus is mounted on a framing through the intermediary of shock absorbers. Compressed air or a combustible mixture is supplied to central pipe 25 which rotates with the member 4 and is in communication with the space behind the fuel valve 26. The valve 26 is adapted to be operated by a cam gear 28, 29 which actuates a ram 37 and in turn a piston 39 on the valve to open the latter against the action of a spring 38. The timing of this valve may be adjustable by using' the spill valve 40, the setting of which is effected by adjusting a separate actuating cam. If it is desired to use pulverized coal as a fuel this may be fed through the hollow shaft 7 which is then provided with a worm conveyor or the compressed air may be used to force it therethrough. For the purpose of maintaining free passages the valve 45 is adapted during the first part of its travel to allow passage only of the compressed air through openings 49. Thereafter the body 47 of the valve opens up. chamber 51 and the pulverized fuel mixture is then drawn through the supply pipe 50. To facilitate speedy combustion it may be desirable to feed an auxiliary supply of inflammable liquid fuel mixture which has been ignited previously to its introduction through the valve. The shock absorber comprises a two-part cylinder 52, 53 supported on the ships' framework and pistons 54, 55 respectively fixed to and free on a rod 65. The rod is connected to the propelling unit mechanically and its hollow interior is connected to the expansion chamber through a non-return valve. The space between the pistons is connected at 59 with a large reservoir. For ahead running, the rod 65 is normally disposed so that an opening 60 is within the sleeve 61 and the piston 55 is hard up against the stop 58. Shocks due to the explosions are taken by the rod 65 and piston 54 which moves to the right against the pressure in the cylinder. If the explosion pressures and shocks rise, the rod moves so far to the right that outlet 60 passes beyond the sleeve 61 and combustion - gases pass into the cylinder to set a higher datum pressure therein. Should the explosion pressures and shocks fall, the rod moves to the left until the free edge of piston 54 opens the ports 63 and the pressure in the cylinder falls to a lower datum pressure. Similarly for reverse runnirig, a higher datum is established when the rod outlet is to the left of sleeve 61 and a lower datum when the ports 64 in piston 54 register with ports 63.