GB943575A - Thread-swaging and fastening screws - Google Patents

Thread-swaging and fastening screws

Info

Publication number
GB943575A
GB943575A GB602462A GB602462A GB943575A GB 943575 A GB943575 A GB 943575A GB 602462 A GB602462 A GB 602462A GB 602462 A GB602462 A GB 602462A GB 943575 A GB943575 A GB 943575A
Authority
GB
United Kingdom
Prior art keywords
thread
lobes
swaging
pilot
shank
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
GB602462A
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.)
General American Transportation Corp
Original Assignee
General American Transportation 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 General American Transportation Corp filed Critical General American Transportation Corp
Publication of GB943575A publication Critical patent/GB943575A/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
    • F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
    • F16B25/001—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by the material of the body into which the screw is screwed
    • F16B25/0021—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by the material of the body into which the screw is screwed the material being metal, e.g. sheet-metal or aluminium
    • 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
    • F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
    • F16B25/0036—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw
    • F16B25/0042—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw characterised by the geometry of the thread, the thread being a ridge wrapped around the shaft of the screw
    • F16B25/0047—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw characterised by the geometry of the thread, the thread being a ridge wrapped around the shaft of the screw the ridge being characterised by its cross-section in the plane of the shaft axis
    • 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
    • F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
    • F16B25/0036—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw
    • F16B25/0042—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw characterised by the geometry of the thread, the thread being a ridge wrapped around the shaft of the screw
    • F16B25/0052—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw characterised by the geometry of the thread, the thread being a ridge wrapped around the shaft of the screw the ridge having indentations, notches or the like in order to improve the cutting behaviour

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Forging (AREA)
  • Formation And Processing Of Food Products (AREA)

Abstract

943,575. Thread-forming screws. GENERAL AMERICAN TRANSPORTATION CORPORATION. Feb. 16, 1962 [April 26, 1961], No. 6024/62. Heading B3V. A thread-swaging screw 10 comprises a shank 11 with a tapered pilot section 11a on which there is a continuous rolled thread 13, the part of the thread on the pilot 11a being partially interrupted by circumferentially spaced flutes F producing lobes L, and the thread being truncated at each flute F and having a substantially full crest at each lobe L and on the rear part 11b of the shank. One or more lobes may be formed, and the depth of the thread decreases towards the end of the pilot 11a. The lobes may have symmetrical leading and trailing swaging faces 16, 17, Fig. 2, or the leading face may subtend a greater or lesser angle than the trailing face, Figs. 2A, 2B (not shown). In a modification, Fig. 3, the flutes F3 are narrow and the lobes L3 wide.
GB602462A 1961-04-26 1962-02-16 Thread-swaging and fastening screws Expired GB943575A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10562961A 1961-04-26 1961-04-26

Publications (1)

Publication Number Publication Date
GB943575A true GB943575A (en) 1963-12-04

Family

ID=22306919

Family Applications (1)

Application Number Title Priority Date Filing Date
GB602462A Expired GB943575A (en) 1961-04-26 1962-02-16 Thread-swaging and fastening screws

Country Status (1)

Country Link
GB (1) GB943575A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3685328A (en) * 1970-09-04 1972-08-22 Mark Richard Carpenter Thread roll dies
EP0024528A2 (en) * 1979-08-22 1981-03-11 Russell, Burdsall & Ward Corporation Thread tapping form
DE3337534A1 (en) * 1983-10-14 1985-05-02 Alfons 5758 Fröndenberg Knoche Universal screw, tool for producing universal screws of this type, and screwdriver for universal screws of this type
US5304024A (en) * 1991-03-18 1994-04-19 Adolf Wurth Gmbh & Co. Kg Screw, method and rolling die for the production thereof
DE29611864U1 (en) * 1996-06-14 1996-09-12 Chu, Yao-ching, Kangshan Chen, Kaohsiung screw
US6450748B1 (en) * 2000-05-30 2002-09-17 Tai-Ping Hsu Screw having a screw thread formed with concave facets
EP3064787A1 (en) * 2015-03-02 2016-09-07 Crown Screw Corporation Self-tapping screw and method of manufacturing the same

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3685328A (en) * 1970-09-04 1972-08-22 Mark Richard Carpenter Thread roll dies
EP0024528A2 (en) * 1979-08-22 1981-03-11 Russell, Burdsall & Ward Corporation Thread tapping form
EP0024528A3 (en) * 1979-08-22 1981-08-05 Russell, Burdsall & Ward Corporation Thread tapping form
DE3337534A1 (en) * 1983-10-14 1985-05-02 Alfons 5758 Fröndenberg Knoche Universal screw, tool for producing universal screws of this type, and screwdriver for universal screws of this type
US5304024A (en) * 1991-03-18 1994-04-19 Adolf Wurth Gmbh & Co. Kg Screw, method and rolling die for the production thereof
DE29611864U1 (en) * 1996-06-14 1996-09-12 Chu, Yao-ching, Kangshan Chen, Kaohsiung screw
US6450748B1 (en) * 2000-05-30 2002-09-17 Tai-Ping Hsu Screw having a screw thread formed with concave facets
EP3064787A1 (en) * 2015-03-02 2016-09-07 Crown Screw Corporation Self-tapping screw and method of manufacturing the same
CN105937534A (en) * 2015-03-02 2016-09-14 王冠精密工业株式会社 Self-tapping screw and method of manufacturing the same

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