Patent GB-190310186-A (GB)
Title: Improvements in Apparatus for Compressing and Mixing Air and Gas and Supplying it to Atmospheric Lighting and Heating Burners.
Inventor: HINMAN CHARLES WILLIAM
Filed: 1903-05-05
Granted: 1903-07-09
Abstract: 10,186. Hinman, C. W. May 5. Mixing air and gases. -In apparatus for compressing and mixing air and gas for supplying atmospheric lighting or heating burners, the mixture contains insufficient air for complete combustion, and the burner a, Fig. 7, is provided with air inlets to supply the necessary additional quantity of air. The mixture of gas and air is supplied to a holder c containing water or sealing-liquid and a floating bell c<1> weighted at c<6>. Projecting up from the bottom of the tank c is a tube c<2>, the upper end of which is above the water. A pipe c<3> passes through the bottom of the vessel c from a casing d, and projects up into the tube c<2>, its upper end having several perforations c<5>. A tube e projects down from the top of the bell c<1> and carries two plates e<2>, e<3> sliding on the pipe c<3>, and forming a closed chamber between them. When the bell falls, the upper plate e<2> passes down below some of the perforations c<5> and permits the gas and air to pass out into the tube e, from which it passes into the bell through openings e<1> and becomes more completely mixed. A burnersupply pipe b passes up into the bell c<1>. Air and gas are supplied to the casing d by pipes f, g respectively, and at the junction of each pipe with the casing is a non-return valve, such as is shown in Fig. 4. This consists of an inverted cup h<5>, the flange of which dips into an annular recess h<3> in the casing h, containing mercury. The valve h<5> is guided by a stem h<6> sliding in guides h<7>, h<8> attached to the casing h. The pipe f communicates with a pipe f<1>, and through a valve f<3> with the air. The pipe g communicates with a pipe g<1>, and through a valve g<4> with a pipe g<3> in connection with any suitable gas supply. The pipes f<1>, g' project up into two chambers of a floating bell i<1> having a vertical partition i<2>. The bell i<1> slides in a tank i containing water, and is weighted at 22, so as to deliver the gas and air to the casing d and to the holder at a pressure greater than that at which the holder delivers the mixture to the burners. When the bell i<1> rises, air and gas are drawn in through the valves f <3>, g<4>, and, when the bell falls, gas and air are delivered into the holder. The valves f <3>, g<4> may be the same as that shown in Fig. 4. The bell i<1> is raised automatically, by means of a hydraulic cylinder j, attached to the bottom of the tank i, and a piston j<1> on a rod j<2> connected to the crown of the bell. The cylinder j is connected by a pipe j<4> with a cylinder j<5> in which slides a double piston valve, which may be reciprocated to place the pipe j<4> either in communication with the water-pressure supply, or in communication with an exhaust or waste pipe m<2>. The double piston valve is connected to an operating lever k pivoted at k<1> and limited in its movements by stops 5, 6. The lever k is engaged and moved by a usual form of tumbler k<2>, and this is moved by a balance lever k<4> connected by a chain or cord m with a sliding rod m<1> attached to the bell i<1>. When the bell falls sufficiently, the tumbler &c. are actuated to move the valve into the position to admit water under pressure to the cylinder j, and, as the bell rises, the tumbler &c. are actuated to cut off the water-pressure supply and open the exhaust. The exhaust or waste pipe m' extends upwards to a pipe m<5> at the same level as the water in the tanks c, i, and branch pipes m<3>, m<4> maintain the water in the tanks at the proper level. A pipe o, having a valve o' similar to the valve shown in Fig. 4, connects the pipes g<3>, b, so that, in case the pressure in the pipe b falls below that in the supply pipe g<3>, the valve opens and the gas passes directly from the pipe g<3> to the pipe b. The bell c' is preferably so weighted as to deliver the mixture to the burners at a considerably-increased pressure, to produce a flame similar to a blow-pipe flame.