GB617428A - Improvements in or relating to wedge-action clamps or the like - Google Patents

Improvements in or relating to wedge-action clamps or the like

Info

Publication number
GB617428A
GB617428A GB1633546A GB1633546A GB617428A GB 617428 A GB617428 A GB 617428A GB 1633546 A GB1633546 A GB 1633546A GB 1633546 A GB1633546 A GB 1633546A GB 617428 A GB617428 A GB 617428A
Authority
GB
United Kingdom
Prior art keywords
jaws
levers
stirrup
bearings
springs
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
GB1633546A
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.)
DANIEL CLARK HAYWARD
WILLIAM DONALD DOUGLAS
Original Assignee
DANIEL CLARK HAYWARD
WILLIAM DONALD DOUGLAS
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 DANIEL CLARK HAYWARD, WILLIAM DONALD DOUGLAS filed Critical DANIEL CLARK HAYWARD
Priority to GB1633546A priority Critical patent/GB617428A/en
Publication of GB617428A publication Critical patent/GB617428A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/02—Details
    • G01N3/04—Chucks
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0014—Type of force applied
    • G01N2203/0016—Tensile or compressive
    • G01N2203/0017—Tensile

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Chain Conveyers (AREA)
  • Manipulator (AREA)

Abstract

617,428. Clamps. DOUGLAS, W. D., and HAYWARD, D. C. May 29, 1946. No. 16335. [Class 44] A clamp of the type in which the gripping pressure increases as the tension on the article gripped increases comprises in one form Fig. 3 a housing 10 carrying two sets of ball-bearings 14,'which engage curved levers 15. The levers are pivoted at 16 to a stirrup 17 and act through ball-seatings 23 on one or each of the gripping jaws 24 which are urged apart by springs 25. A spring 19 urges the stirrup downwards. The upward tension on the bearings 14 tends to turn the levers 15 to increase the gripping pressure on the jaws. In another form, Fig. 5, the jaws are fulcrummed on balls 23 mounted in inclined guides 29 in a housing 10. The jaws 24 have bridge pieces 30 under which passes a cam 28 turnable by handle 27 to lift the jaws and release the article gripped, the jaws being urged apart by springs 25.
GB1633546A 1946-05-29 1946-05-29 Improvements in or relating to wedge-action clamps or the like Expired GB617428A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1633546A GB617428A (en) 1946-05-29 1946-05-29 Improvements in or relating to wedge-action clamps or the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1633546A GB617428A (en) 1946-05-29 1946-05-29 Improvements in or relating to wedge-action clamps or the like

Publications (1)

Publication Number Publication Date
GB617428A true GB617428A (en) 1949-02-07

Family

ID=10075432

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1633546A Expired GB617428A (en) 1946-05-29 1946-05-29 Improvements in or relating to wedge-action clamps or the like

Country Status (1)

Country Link
GB (1) GB617428A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009073091A1 (en) * 2007-11-30 2009-06-11 Dynamic Systems, Inc. Apparatus for a cam-based jack assembly for use in materials testing machines and an accompanying method for use therewith
US7793553B2 (en) 2007-11-30 2010-09-14 Dynamic Systems, Inc. Specimen grip, having a grip shell, for use in a materials testing machine
CN109489880A (en) * 2018-05-23 2019-03-19 南京林业大学 A kind of flexible connection fixture for deceleration root system pulling force in situ measurement
CN112683658A (en) * 2020-12-02 2021-04-20 浙江工业大学 Friction head clamping device installed on friction testing machine

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009073091A1 (en) * 2007-11-30 2009-06-11 Dynamic Systems, Inc. Apparatus for a cam-based jack assembly for use in materials testing machines and an accompanying method for use therewith
US7793553B2 (en) 2007-11-30 2010-09-14 Dynamic Systems, Inc. Specimen grip, having a grip shell, for use in a materials testing machine
US7827868B2 (en) 2007-11-30 2010-11-09 Dynamic Systems, Inc. Apparatus for a cam-based jack assembly for use in materials, testing machines and an accompanying method for use therewith
CN109489880A (en) * 2018-05-23 2019-03-19 南京林业大学 A kind of flexible connection fixture for deceleration root system pulling force in situ measurement
CN109489880B (en) * 2018-05-23 2024-05-24 南京林业大学 Flexible connection clamp for measuring in-situ deceleration root system tension
CN112683658A (en) * 2020-12-02 2021-04-20 浙江工业大学 Friction head clamping device installed on friction testing machine

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