GB781847A - Improvements in air injectors - Google Patents

Improvements in air injectors

Info

Publication number
GB781847A
GB781847A GB7789/56A GB778956A GB781847A GB 781847 A GB781847 A GB 781847A GB 7789/56 A GB7789/56 A GB 7789/56A GB 778956 A GB778956 A GB 778956A GB 781847 A GB781847 A GB 781847A
Authority
GB
United Kingdom
Prior art keywords
compressed air
disc
venturi
piston
pin
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
GB7789/56A
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.)
Specialties Development Corp
Original Assignee
Specialties Development Corp
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 Specialties Development Corp filed Critical Specialties Development Corp
Publication of GB781847A publication Critical patent/GB781847A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
    • B66F3/25—Constructional features
    • B66F3/35—Inflatable flexible elements, e.g. bellows
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
    • F04F5/14—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid
    • F04F5/24—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid displacing liquids, e.g. containing solids, or liquids and elastic fluids
    • F04F5/28—Restarting of inducing action
    • F04F5/32—Restarting of inducing action with hinged flap in combining nozzle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
    • F04F5/44—Component parts, details, or accessories not provided for in, or of interest apart from, groups F04F5/02 - F04F5/42
    • F04F5/46—Arrangements of nozzles
    • F04F5/461—Adjustable nozzles

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Structural Engineering (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Nozzles (AREA)

Abstract

781,847. Injectors. SPECIALTIES DEVELOPMENT CORPORATION. March 13, 1956 [May 10, 1955], No. 7789/56. Class 71. A compressed air actuated injector suitable for inflating a pneumatic jack comprises a venturi tube 11, 14, 12 having a pivoted closure disc 27 engaging a seat 15 surrounding the throat 14 on the downstream side thereof and openable towards the divergent portion 12 of the venturi, and a compressed air supply orifice 49 in a nozzle head 47 in the convergent portion 11. The pivoted disc 27 is opened against a spring 38 by a compressed air actuated piston 41 linked thereto by engagement of a slotted nut 44 with a pin 46 extending between legs 32 of a bracket 29 hinged about a pin 34 secured to the injector casing. The piston 41 is supplied with compressed air through a flexible hose 55 connected to the main compressed air inlet 51. On discontinuing the supply of conpressed air the piston chamber is vented to atmosphere through the hose 55 and orifice 49, and the disc 27 is closed by its spring thus trapping air in the venturi portion 12. Reopening of the disc 27 is effected by an external handle 37, Fig. 2 (not shown) to allow deflation of the jack cylinder.
GB7789/56A 1955-05-10 1956-03-13 Improvements in air injectors Expired GB781847A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US507240A US2859908A (en) 1955-05-10 1955-05-10 Aspirating device

Publications (1)

Publication Number Publication Date
GB781847A true GB781847A (en) 1957-08-28

Family

ID=24017819

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7789/56A Expired GB781847A (en) 1955-05-10 1956-03-13 Improvements in air injectors

Country Status (2)

Country Link
US (1) US2859908A (en)
GB (1) GB781847A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1042173B (en) * 1958-02-11 1958-10-30 Schmidt Sche Heissdampf Device on jet blowers with continuous supply of propellant

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2975958A (en) * 1958-12-08 1961-03-21 Specialties Dev Corp Aspirating apparatus
USRE29228E (en) * 1969-02-25 1977-05-24 Eaton Corporation Vehicle safety apparatus including an inflatable confinement
US3591314A (en) * 1969-02-28 1971-07-06 Ind Covers Inc Aspirator apparatus for bag-inflation system
US5129674A (en) * 1990-11-27 1992-07-14 Trw Vehicle Safety Systems Inc. Reaction device for air bag module
WO2009109910A1 (en) * 2008-03-04 2009-09-11 Stopak (Pty) Ltd Inflation device
WO2010131137A1 (en) * 2009-05-12 2010-11-18 Stopak (Pty) Ltd Inflation device

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US794881A (en) * 1904-10-12 1905-07-18 David R Thomas Variable-exhaust mechanism.
GB360799A (en) * 1931-04-14 1931-11-12 Harry Edward Gresham Improvements relating to steam injectors
US2300642A (en) * 1939-02-02 1942-11-03 Wallace & Tiernan Company Inc Gas drawing apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1042173B (en) * 1958-02-11 1958-10-30 Schmidt Sche Heissdampf Device on jet blowers with continuous supply of propellant

Also Published As

Publication number Publication date
US2859908A (en) 1958-11-11

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