GB878824A - A screw threaded element having means for preventing its accidental removal from an appropriately screw threaded body - Google Patents

A screw threaded element having means for preventing its accidental removal from an appropriately screw threaded body

Info

Publication number
GB878824A
GB878824A GB2821357A GB2821357A GB878824A GB 878824 A GB878824 A GB 878824A GB 2821357 A GB2821357 A GB 2821357A GB 2821357 A GB2821357 A GB 2821357A GB 878824 A GB878824 A GB 878824A
Authority
GB
United Kingdom
Prior art keywords
washer
cap
cable
outlet
teeth
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
GB2821357A
Inventor
John Henry Fulford
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.)
National Research Development Corp UK
Original Assignee
National Research Development Corp UK
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 National Research Development Corp UK filed Critical National Research Development Corp UK
Priority to GB2821357A priority Critical patent/GB878824A/en
Publication of GB878824A publication Critical patent/GB878824A/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
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B41/00—Measures against loss of bolts, nuts, or pins; Measures against unauthorised operation of bolts, nuts or pins
    • F16B41/005—Measures against unauthorised operation of bolts, nuts or pins
    • 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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/005—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts comprising locking means for the threaded member

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)

Abstract

878,824. Locking nuts and bolts. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Dec. 5, 1958 [Sept. 6, 1957], No. 28213/57. Class 89(1). [Also in Group XXVIII] A blanking-off cap 1 which is adapted to be screwed on to a gas cock outlet 2 is provided with means for preventing its accidental removal from the outlet, the means comprising a washer 9 mounted for rotation relatively to the cap in the direction in which the latter would require to be rotated to unscrew it from the outlet, the washer 9 having, however, means for restraining its rotation relatively to the cap in the opposite direction, and a cable 18, one end of which is fixed to the washer 9; when the other end of the cable is fixed relatively to the outlet 2 and the cable is fully wound about the cap by rotation of the washer 9 relatively to the cap, the cable will oppose unscrewing of the cap. The outlet 2 is provided with a cylindrical plug 5 which enters a conical end portion 4 of the outlet bore. The washer 9 is carried by a stem 7 of the plug 5 and provided with equidistantly spaced slots 10 which are engaged by ratchet-like teeth 11 protruding from a washer 8 also carried by the stem 7, the washer 8 having pins 12 for engaging holes 13 in the end wall of the cap 1. Riveted to the end of the stem 7 is a cup 15 for retaining a spring 16 which urges the washer 9 into engagement with the washer 8. In operation the washer 9 is turned, by means of integral lugs 17, in the unscrewing direction of the cap 1 until the cable 18 is taut, the teeth 11 engaging the slots 10 to prevent the washer 9 from turning in the opposite direction. To remove the cap 1, the washer 9 is moved away from the washer 8 against the action of the spring 16 thus disengaging the teeth 11 from the slots 10 and allowing the cable 18 to be unwound. Alternatively, the teeth 11 may be provided on the washer 9 and the slots 10 provided in the washer 8 or teeth on the washer 9 may cooperate with slots in the end wall of the cap 1. In a second embodiment, Fig. 3 (not shown), pegs carried by the end wall of the cap 1 cooperate with indentations in the washer 9. Alternatively, Fig. 4 (not shown), pegs carried by the washer 9 co-operate with depressions formed in the end wall of the cap 1.
GB2821357A 1957-09-06 1957-09-06 A screw threaded element having means for preventing its accidental removal from an appropriately screw threaded body Expired GB878824A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2821357A GB878824A (en) 1957-09-06 1957-09-06 A screw threaded element having means for preventing its accidental removal from an appropriately screw threaded body

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2821357A GB878824A (en) 1957-09-06 1957-09-06 A screw threaded element having means for preventing its accidental removal from an appropriately screw threaded body

Publications (1)

Publication Number Publication Date
GB878824A true GB878824A (en) 1961-10-04

Family

ID=10272113

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2821357A Expired GB878824A (en) 1957-09-06 1957-09-06 A screw threaded element having means for preventing its accidental removal from an appropriately screw threaded body

Country Status (1)

Country Link
GB (1) GB878824A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000066930A1 (en) * 1999-04-30 2000-11-09 Crane-Resistoflex Nut locking apparatus
US7571937B2 (en) 2004-09-10 2009-08-11 Sps Technologies, Llc Fluid coupling assembly with integral retention mechanism

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000066930A1 (en) * 1999-04-30 2000-11-09 Crane-Resistoflex Nut locking apparatus
US6557900B1 (en) 1999-04-30 2003-05-06 Crane-Resistoflex Nut locking apparatus
US7571937B2 (en) 2004-09-10 2009-08-11 Sps Technologies, Llc Fluid coupling assembly with integral retention mechanism

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