GB171397A - Improvements in valves - Google Patents

Abstract

171,397. Schworetzky, G., WerlÚ, N., and Graaff, C. Nov. 11, 1920, [Convention date]. P i s t o n valves; actuating- mechanism.-A tubular sliding valve applied to a fire-extinguisher comprises a stuffing- box f, Fig. 1, provided with two packings t, and a sliding member b provided with radial holes i<1>, an axial bore k, and a nozzle e. A space z between the packings t communicates with a pipe s for the extinguishing liquid. The valve is operated by the lever h pivoted on a pin a carried by a fixed member g. The front part of the lever is formed as a hood to cover the nozzle, and is provided with an opening x which only uncovers the nozzle when the valve is open. The hood is formed with slots w which engage with pins r to reciprocate the valve. The nozzle is protected from the entrance of foreign matter by a guard d, Fig. 2, pivoted on the pins r, and having forked ends y engaging with the pin a. The guard is operated when the handle is moved. The extension n of the valve b may open the pressure storage vessel p by means of a non-return valve. The Specification as open to inspection under Sect. 91 (3) (a) comprises also a tube b, Fig. 1, (Cancelled), sliding in a stuffing-box f, and provided with openings i. A sleeve g supports an operating lever h which engages in slots in the lower end of the tube b. This subject-matter does not appear in the Specification as accepted.