Patent GB-190216734-A (GB)
Title: Improvements relating to Gas Lamps Chiefly Designed for Use in connection with Incandescent Burners
Filed: 1902-07-28
Granted: 1902-11-20
Abstract: 16,734. Lake, H. H., [Bernstein Co., S.]. July 28. Gas valves and cocks.-In incandescent and other cluster gas burners, the gas is simultaneously supplied, either to all of the burners or to a certain number thereof, by the movement of the valve. The separate ports 21, 22, 23, 24 of the separate burners 6 are respectively controlled by the valves 25, 26, 27, 28 operated by a single spindle 29, lost motion being arranged for between this spindle and certain of the valves, so that some of the valves may be operated for a certain distance in either direction without operating the others. Thus, to allow three of the burners to be extinguished without extinguishing the fourth, the valves 26, 27, 28 are rigidly connected to the spindle 29, while the valve 25 is loosely pivoted on the spindle, and is prevented by a ledge 39 from turning with the spindle except when the pin 37 comes into contact with one end or the other of the slot 36. The connections 30, 31, 32, 35 are made of thin resilient metal, to press the valves upon their seats, and the valves 26, 27, 28 are so much longer than the valve 25 as will admit of their being turned far enough to take up the lost motion due to the slot 36 without turning on the gas to their respective burners. Therefore, when all the valves are closed and the spindle 29 is turned to open the valves, the gas will be simultaneously turned on to all the burners. When, however, the spindle is turned in the opposite direction, the valves 26, 27, 28 will close the ports 22, 23, 24 before the valve 25 closes the port 21. This port is only closed during the latter part of the movement of the spindle 29, and a yielding stop, consisting of a spring pawl, is provided to indicate the point at which the closing movement should be stopped to leave the port 21 open. All the burners are preferably ignited from a single permanent pilot burner 50, Fig. 4, controlled by a valve 51. For the purpose of lighting the main burners 6 from the permanent pilot burner 50, an intermittently-acting pilot burner 52, 53, provided with three jet openings, is provided for each pair of main burners. The gas supply to these intermittently-acting burners 52, 53 is controlled by a disc valve 56, which only operates while the valve of the main burners is being operated. The disc 56 is normally pressed upon its seat by a spring 60, and is secured by pins 59 to a spindle 57, which is connected to the spindle 29 by a pawl-andratchet gear 63, so that the spindle 57 will be operated only during the opening movement of the spindle 29. To ensure the certain action of the pilot burners 52, 53, the maximum pressure of gas is maintained therein during the movement of the valve by providing a plurality of ports 54, 55, equally spaced to the ports in the disc 56. The operation of the valve mechanism of the pilot burners 52, 53, when the main valve is operated only through that part of its movement necessary to turn on and off three of the burners, is effected by the spacing of the teeth of the ratchet connection between the spindles 57, 29. The gas is heated by radiation and conduction on its way to the burners ; the chambers 3, 7 tend to prevent sudden fluctuation in the gas pressure ; and the valve disc 56 and the ratchet-wheel connecting the valve spindles are perforated to give free passage of the gas to the valve chambers.