GB561024A - Improvements in or relating to electrically-controlled fluid-pressure operated jacks - Google Patents

Improvements in or relating to electrically-controlled fluid-pressure operated jacks

Info

Publication number
GB561024A
GB561024A GB1452442A GB1452442A GB561024A GB 561024 A GB561024 A GB 561024A GB 1452442 A GB1452442 A GB 1452442A GB 1452442 A GB1452442 A GB 1452442A GB 561024 A GB561024 A GB 561024A
Authority
GB
United Kingdom
Prior art keywords
duct
valve
spring
port
passage
Prior art date
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
Application number
GB1452442A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
British Thermostat Co Ltd
Original Assignee
British Thermostat Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by British Thermostat Co Ltd filed Critical British Thermostat Co Ltd
Priority to GB1452442A priority Critical patent/GB561024A/en
Publication of GB561024A publication Critical patent/GB561024A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1423—Component parts; Constructional details
    • F15B15/1476—Special return means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
    • F02B39/16—Other safety measures for, or other control of, pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/202—Externally-operated valves mounted in or on the actuator

Abstract

561,024. Jacks. HURST, W. F. F. MARTIN-, and BRITISH THERMOSTAT CO., Ltd. Oct. 16, 1942, No. 14524. [Class 78 (iii)] An electrically controlled fluid pressure operated jack comprises a telescopic ram 3, 4 normally extended by a spring 14. Fig. 2 shows a form adapted for pneumatic operation; in which the admission and exhaust valves 35, 32 are controlled by a spring-biassed magnetic core 22 influenced by a solenoid coil 20. The admission plug 33 connects by a duct 34, valve passage 35, duct 37 and annular chamber 38 to a passage 12 around the cylinder 6 and a port 13 leading into the cylinder below the piston 7. When the pull is completed, the solenoid is de-energized so that the spring 23 can move the core 22 to close valve 35 and open valve 32. The air then escapes by way of port 13, passage 12, annulus 38, duct 37, valve duct 31 and orifice 42 to the atmosphere. In a form for hydraulic operation, the core 22 slides a piston valve in its ported'sheath to connect the cylinder 6 either with the admission plug 33 or with a radial exhaust nozzle. The jack is stated to be applicable to the actuation of a two-speed supercharger for an aircraft engine, under the control of an altitude or like operated switch. In both forms the spring abutments and the location of port 13 may be such as to make the collapsed disposition the normal one.
GB1452442A 1942-10-16 1942-10-16 Improvements in or relating to electrically-controlled fluid-pressure operated jacks Expired GB561024A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1452442A GB561024A (en) 1942-10-16 1942-10-16 Improvements in or relating to electrically-controlled fluid-pressure operated jacks

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1452442A GB561024A (en) 1942-10-16 1942-10-16 Improvements in or relating to electrically-controlled fluid-pressure operated jacks

Publications (1)

Publication Number Publication Date
GB561024A true GB561024A (en) 1944-05-02

Family

ID=10042752

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1452442A Expired GB561024A (en) 1942-10-16 1942-10-16 Improvements in or relating to electrically-controlled fluid-pressure operated jacks

Country Status (1)

Country Link
GB (1) GB561024A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2166196A (en) * 1984-10-26 1986-04-30 Peter Rebbettes Fluid operated actuator
EP1947052A3 (en) * 2007-01-19 2010-10-13 Liko Research & Development AB Arrangement at telescopic lifting beams
CN106321548A (en) * 2015-05-27 2017-01-11 王润湘 Overpressure air cylinder
CN110273888A (en) * 2019-07-05 2019-09-24 太原理工大学 Miniature linear hydraulic actuator and application method with nozzle baffle type control volume

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2166196A (en) * 1984-10-26 1986-04-30 Peter Rebbettes Fluid operated actuator
EP1947052A3 (en) * 2007-01-19 2010-10-13 Liko Research & Development AB Arrangement at telescopic lifting beams
CN106321548A (en) * 2015-05-27 2017-01-11 王润湘 Overpressure air cylinder
CN110273888A (en) * 2019-07-05 2019-09-24 太原理工大学 Miniature linear hydraulic actuator and application method with nozzle baffle type control volume

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