GB833783A - Improvements in or relating to stopcocks - Google Patents

Improvements in or relating to stopcocks

Info

Publication number
GB833783A
GB833783A GB1206357A GB1206357A GB833783A GB 833783 A GB833783 A GB 833783A GB 1206357 A GB1206357 A GB 1206357A GB 1206357 A GB1206357 A GB 1206357A GB 833783 A GB833783 A GB 833783A
Authority
GB
United Kingdom
Prior art keywords
tube
diameter
screw
squeezing
april
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
GB1206357A
Inventor
George Charles Devereux
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.)
HJ Elliott Ltd
Original Assignee
HJ Elliott 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 HJ Elliott Ltd filed Critical HJ Elliott Ltd
Priority to GB1206357A priority Critical patent/GB833783A/en
Publication of GB833783A publication Critical patent/GB833783A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K7/00—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves
    • F16K7/02—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with tubular diaphragm
    • F16K7/04—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with tubular diaphragm constrictable by external radial force
    • F16K7/06—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with tubular diaphragm constrictable by external radial force by means of a screw-spindle, cam, or other mechanical means
    • F16K7/061—Screw clamps

Abstract

833,783. Valves. ELLIOTT Ltd., H. J. April 9, 1958 [April 12, 1957], No. 12063/57. Class 135. A stopcock, primarily for use in burettes and pipettes, comprises a tube 2 of flexible, resilient, material having a smooth internal surface, an obturating member such as a ball 3 jammed in the tube and making contact with an annular area of the inner wall thereof so that fluid cannot normally flow past said member, and a screw device for squeezing the tube across a diameter which passes through said area, the tube and said member being such that when the tube is squeezed as aforesaid, channels will be opened between the tube and said member on another diameter and will permit the passage of fluid past said member. As shown, the tube is housed in a body 1 carrying a hand screw 4, 5 for squeezing the tube and having holes 9 on a diameter at right angles to the screw to allow the tube to deform away from the ball 3, the opposite ends of the tube being connected to parts 7, 8 of a burette.
GB1206357A 1957-04-12 1957-04-12 Improvements in or relating to stopcocks Expired GB833783A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1206357A GB833783A (en) 1957-04-12 1957-04-12 Improvements in or relating to stopcocks

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1206357A GB833783A (en) 1957-04-12 1957-04-12 Improvements in or relating to stopcocks

Publications (1)

Publication Number Publication Date
GB833783A true GB833783A (en) 1960-04-27

Family

ID=9997746

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1206357A Expired GB833783A (en) 1957-04-12 1957-04-12 Improvements in or relating to stopcocks

Country Status (1)

Country Link
GB (1) GB833783A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4730635A (en) * 1987-08-19 1988-03-15 Hall Surgical Valve and method
DE202013002910U1 (en) * 2013-03-27 2014-06-30 Brand Gmbh + Co Kg Pipettierhilfsgerät

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4730635A (en) * 1987-08-19 1988-03-15 Hall Surgical Valve and method
DE202013002910U1 (en) * 2013-03-27 2014-06-30 Brand Gmbh + Co Kg Pipettierhilfsgerät

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