Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
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Edwin Rudolph Grote
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Individual
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Individual
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Publication of GB190925680ApublicationCriticalpatent/GB190925680A/en
F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
F04B37/10—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
F04B37/14—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use to obtain high vacuum
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Engineering & Computer Science
(AREA)
Mechanical Engineering
(AREA)
General Engineering & Computer Science
(AREA)
Sealing Devices
(AREA)
Jet Pumps And Other Pumps
(AREA)
Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil
(AREA)
Abstract
25,680. Grote, E. R. Nov. 6. Liquid-seal valves; actuating valves.-Mercury for sealing a pipe b in a chamber c is raised by energizing an electro-magnet j arranged below a chamber g in communication with the chamber c and containing a floating mass of iron h. The iron is pulled down and thereby causes a rise of mercury in both chambers.
GB190925680D1909-11-061909-11-06Improvements in and relating to Valve Devices for Air or Gas Exhausting Apparatus.
ExpiredGB190925680A
(en)