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GB1152629A - Improvements relating to Self-Locking Screw-Threaded Metal Fasteners - Google Patents

Improvements relating to Self-Locking Screw-Threaded Metal Fasteners

Info

Publication number
GB1152629A
GB1152629A GB4791667A GB4791667A GB1152629A GB 1152629 A GB1152629 A GB 1152629A GB 4791667 A GB4791667 A GB 4791667A GB 4791667 A GB4791667 A GB 4791667A GB 1152629 A GB1152629 A GB 1152629A
Authority
GB
United Kingdom
Prior art keywords
turns
fastener
thread
truncated
self
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
GB4791667A
Inventor
Eric Gordon Gabbey
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB4791667A priority Critical patent/GB1152629A/en
Publication of GB1152629A publication Critical patent/GB1152629A/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
    • F16B39/00—Locking of screws, bolts or nuts
    • F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
    • F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
    • F16B39/30—Locking exclusively by special shape of the screw-thread
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H3/00—Making helical bodies or bodies having parts of helical shape
    • B21H3/02—Making helical bodies or bodies having parts of helical shape external screw-threads ; Making dies for thread rolling
    • B21H3/025—Rolling locking screws

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Forging (AREA)
  • Clamps And Clips (AREA)

Abstract

1,152,629. Making self-locking fasteners; rolling threads. E. G. GABBEY. 20 Oct., 1967, No. 47916/67. Headings B3A and B3M. [Also in Division F2] A self-locking helically threaded metal fastener is provided with truncated intermediate thread turns of a pitch diameter different from that of adjoining thread turns, all the thread turns having flat flanks, in cross-section. The truncated turns provide a friction locking arrangement between the fastener and a fastener having a co-operating threaded portion of form corresponding to the non-truncated turns. The fastener may be formed by modifying some of the turns of a uniformly threaded fastener using two or more rotatable dies (21, 22) (Fig. 2, not shown), or flat dies, or using in conjunction with a die 43 a pressure roller 42 which is arranged to press on a portion of the thread of the fastener. Alternatively, the fastener may be formed by dies (31, 32) (Fig. 4, not shown) which have portions (31a, 32b) specially shaped to form the truncated thread turns. The thread formation is such that the cross-sectional area of each of the truncated thread turns is substantially equal to that of each of the other turns and that the slopes of all the thread flanks are identical.
GB4791667A 1967-10-20 1967-10-20 Improvements relating to Self-Locking Screw-Threaded Metal Fasteners Expired GB1152629A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4791667A GB1152629A (en) 1967-10-20 1967-10-20 Improvements relating to Self-Locking Screw-Threaded Metal Fasteners

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4791667A GB1152629A (en) 1967-10-20 1967-10-20 Improvements relating to Self-Locking Screw-Threaded Metal Fasteners

Publications (1)

Publication Number Publication Date
GB1152629A true GB1152629A (en) 1969-05-21

Family

ID=10446720

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4791667A Expired GB1152629A (en) 1967-10-20 1967-10-20 Improvements relating to Self-Locking Screw-Threaded Metal Fasteners

Country Status (1)

Country Link
GB (1) GB1152629A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0459960A1 (en) * 1990-05-29 1991-12-04 Sandvik Aktiebolag Screw thread structure
US5163523A (en) * 1990-05-29 1992-11-17 Sandvik Rock Tools, Inc. Screw thread structure for percussion drill driver sub and case
WO2010099947A1 (en) * 2009-03-03 2010-09-10 Flaig, Hartmut Safety screw, screw connection and method for producing a safety screw

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0459960A1 (en) * 1990-05-29 1991-12-04 Sandvik Aktiebolag Screw thread structure
US5163523A (en) * 1990-05-29 1992-11-17 Sandvik Rock Tools, Inc. Screw thread structure for percussion drill driver sub and case
WO2010099947A1 (en) * 2009-03-03 2010-09-10 Flaig, Hartmut Safety screw, screw connection and method for producing a safety screw
CN102483087A (en) * 2009-03-03 2012-05-30 哈特马特.弗莱格 Safety screw, screw connection device and method for producing a safety screw
EP2511542A1 (en) * 2009-03-03 2012-10-17 Flaig, Hartmut Safety screw, screw connection and method for producing a safety screw
EP2628965A1 (en) * 2009-03-03 2013-08-21 Flaig, Hartmut Retaining screw, screw connection and method for producing a retaining screw
CN102483087B (en) * 2009-03-03 2014-05-28 哈特马特.弗莱格 Safety screw, screw connection device and method for producing a safety screw
EA022277B1 (en) * 2009-03-03 2015-12-30 Флайг, Хартмут Safety screw, screw connection and method for producing a safety screw

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee