Patent GB-190800796-A (GB)
Title: Improvements in Electrically Controlled Apparatus for Igniting and Extinguishing Lamps.
Inventor: AUBERT ALBERT MAURICE
Filed: 1908-01-13
Granted: 1908-02-27
Abstract: 796. Aubert, A. M., and Aubert, J. M. Jan. 13. Lighting and extinguishing gas.-In an electric igniting apparatus, a freely guided valve o, having a very limited surface of contact with its seat p to ensure a tight closure, is actuated by the armature d of an electromagnet. In the two constructions shown respectively in Figs. 1 and 4, each Figure represents two vertical sections through the apparatus, the right-hand half being in a plane at right-angles to that of the left-hand half. The movable armature d of the electro-magnet a is closed below, so that it is attracted by a feeble current, and carries a cylinder f, Fig. 1, guided below by a flange h and provided with four symmetricallyarranged openings g. Springs m are arranged opposite two of the openings g, and pivoted latches jare arranged opposite the remaining openings. When the current is passed to open the valve, the armature d, the cylinder f, and the springs mare raised, whereupon the valve o is lifted by the engagement of the arms u with openings n in the springs m, and the head t of the valve engages with the latches j, the engagement being maintained by the pressure of springs l. Gas or combustible fluid entering at q<1> can then pass by the outlet v to the burner, where it is ignited by an incandescent platinum wire. As the armature d continues to ascend, the lower edges of the openings g engage with and turn the latches j. As soon as the current ceases, the armature d descends, and the springs m slide over the arms u, and are pressed inwards by the inclined surfaces r<1> of the casing. The valve is, however, retained in the raised or open position by the engagement of the valve-head t with the latches j. To close the valve, a second current is passed through the electro-magnet, causing the armature d and the cylinder f to rise and disengage the latches j from the head t. Thereupon the valve falls upon its seat, and as soon as the current ceases, the armature falls and the apparatus returns to the original or closed position shown in Fig. 1. If the latches are arranged in a plane at rightangles to the axis of the apparatus, they are engaged by inclined planes forming the edges of the openings g. If the apparatus is to be subjected to shocks or vibration, the construction shown in Fig. 4 retains the valve more securely in the open position. The core b and the armature d are so shaped as to regulate the attraction during the whole of the stroke. Two small toothed wheels x and a larger one y situated between them are keyed on a spindle w, on which rests the forked ends u<1> of a bar u on the valve. When the current passes and the armature rises, the forked end of the pivoted latch j moves the wheels x, y until the wheel y rests on the surface h' of the flange h, thus raising the bar u and opening the valve, which is retained in its open position by the abutment of the angular end of the tooth of the wheel y against the projection h<2>. When the current is passed a second' time, the parts are restored to their original position and the valve is closed.