GB853002A - Improvements relating to headed screw fasteners and the manufacture thereof - Google Patents

Improvements relating to headed screw fasteners and the manufacture thereof

Info

Publication number
GB853002A
GB853002A GB15190/58A GB1519058A GB853002A GB 853002 A GB853002 A GB 853002A GB 15190/58 A GB15190/58 A GB 15190/58A GB 1519058 A GB1519058 A GB 1519058A GB 853002 A GB853002 A GB 853002A
Authority
GB
United Kingdom
Prior art keywords
head
shank
threads
rolling
screw
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
GB15190/58A
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 GB853002A publication Critical patent/GB853002A/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
    • 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
    • B21H3/06—Making by means of profiled members other than rolls, e.g. reciprocating flat dies or jaws, moved longitudinally or curvilinearly with respect to each other
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Slide Fasteners, Snap Fasteners, And Hook Fasteners (AREA)

Abstract

853,002. Making screws; rolling screw threads. GENERAL AMERICAN TRANSPORTATION CORPORATION. May 12, 1958 [March 12, 1958], No. 15190/58. Classes 83 (2) and 83 (4). [Also in Group XXV] A method of making headed screws in which the threads are formed up to the plane of the underface of the screw head comprises forming an annular cavity 9 in the underface of the head of the screw blank 1, adjacent to the juncture of the shank 2 and the head 3, and thereafter rolling the shank between thread-rolling dies so as to produce full threads adjacent to the head while displacing excess material 11 from the shank into the annular cavity. The rolling dies have their upper corners unrelieved so as to ensure complete formation of the screw threads 4 up to the underside 5 of the head 3 and to cause axial displacement of any excess material along the shank and within the cavity 9.
GB15190/58A 1958-03-12 1958-05-12 Improvements relating to headed screw fasteners and the manufacture thereof Expired GB853002A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US853002XA 1958-03-12 1958-03-12

Publications (1)

Publication Number Publication Date
GB853002A true GB853002A (en) 1960-11-02

Family

ID=22190689

Family Applications (1)

Application Number Title Priority Date Filing Date
GB15190/58A Expired GB853002A (en) 1958-03-12 1958-05-12 Improvements relating to headed screw fasteners and the manufacture thereof

Country Status (1)

Country Link
GB (1) GB853002A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2494354A1 (en) * 1980-11-19 1982-05-21 Microdot Inc AXLE-NUT FIXING DEVICE
US4583897A (en) * 1984-03-19 1986-04-22 Briles Franklin S Annular dovetail head fastener

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2494354A1 (en) * 1980-11-19 1982-05-21 Microdot Inc AXLE-NUT FIXING DEVICE
US4583897A (en) * 1984-03-19 1986-04-22 Briles Franklin S Annular dovetail head fastener

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