Patent GB-191421512-A (GB)
Title: Improvements in and relating to Electric Starting Systems for Internal Combustion Engines for Automobiles.
Inventor: JACOBSON EDWARD BYRON
Filed: 1914-10-26
Granted: 1915-10-26
Abstract: 21,512. Jacobson, E. B., and Gustafson, C. J. Dec. 3, 1913, [Convention date]. Switches, quick-action; interrupters, mechanical.-In a starting system for automobiles such as motor-cycles, a single lever twist handle or the like operates to release the compression in the engine cylinders and sets a lock upon a switch controlling the starting and batterycharging circuits of a dynamo-electric machine, so that, on moving the switch to the starting position, it is retained there. The handle 33 controls the exhaust valves 18 through an arm 30 and a rod 29 connected to an arm 28 gearing with a cam loosely mounted on the shaft carrying the cams for operating the valves during normal running. On turning the handle in the starting direction, this cam operates bellcrank levers 22 and raises the exhaust valves to release the pressure in the cylinders. At the same time, the arm 30 is moved out of engagement with the bent end 74 of a lever 71, thereby permitting the lever to fall into the position shown in Fig. 5 and releasing a rod 67 which controls the locking-device for the switch. A ball 65 resting in a recess 70 in the rod 67 is thereby pressed outwards by a spring 69 against a segment carried by the switch lever 55, and on moving the switch lever into the starting position, the ball is forced into a recess 66 on the segment in order to lock the switch lever in this position. When the engine has started, the handle is returned to its normal position and the exhaust valves are released, while the arm 72 of the lever 71 pushes in the rod 67 against the action of the spring 69, thereby allowing the ball 65 to fall back into the recess 70 and unlock the switch arm. The arm is then moved into the batterycharging position by a spring 60. The arrangement of circuits is shown in Fig. 2. In the starting position, the terminals a, d and b, c of the switch are connected, and the batteries A, B are connected in series to operate the dynamo as a series motor through the winding s', the head-light, horn, and ignition circuits being disconnected. In the charging position, the terminals a, c, e and b, f are connected, and the dynamo runs as a shunt generator, charging the batteries in parallel. The headlight and horn are operated by both batteries in parallel, while the ignition system is operated solely by the battery B. The ignition circuit is interrupted in the starting position by means of a lever 50 connected to the rod 29. When the rod 29 is moved to lift the exhaust valves, the lever 50 swings the arm 42 of the interrupter and moves blades 46 out of contact with plates 44, 45. On moving the rod in the opposite direction, the ignition circuit is not completed until after the release of the exhaust valves, and further movement of the arm 42 for timing purposes is permitted without affecting the arm 28 by a lost-motion connexion between the rod 29 and the arm. The Specification as open to inspection under Section 91 (3) (a) comprises also the following subject - matter. An interrupter, shown in Fig. 7 (Cancelled), for the ignition circuits, the contact - levers 39, fixed contacts, and blades 46 above referred to being mounted in a casing 41 carrying the adjusting arm 42. A starting and battery-charging switch shown in Figs. 9 and 10 (Cancelled), operated by the arm 55, Fig. 4, and consisting of an outer fixed member 53 and an inner movable disk 54. The terminals a ... f are mounted on the fixed member and are connected up to complete the starting, charging, ignition, and lighting circuits set forth above by means of contact plates 56 ... 59 on the disk. This subjectmatter does not appear in the Specification as accepted.