GB1006509A - Improvements in or relating to screw threaded fasteners and drivers for use therewith - Google Patents

Improvements in or relating to screw threaded fasteners and drivers for use therewith

Info

Publication number
GB1006509A
GB1006509A GB1712262A GB1712262A GB1006509A GB 1006509 A GB1006509 A GB 1006509A GB 1712262 A GB1712262 A GB 1712262A GB 1712262 A GB1712262 A GB 1712262A GB 1006509 A GB1006509 A GB 1006509A
Authority
GB
United Kingdom
Prior art keywords
wings
nib
screwhead
vertical
faces
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
GB1712262A
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.)
GKN Screws and Fasteners Ltd
Original Assignee
GKN Screws and Fasteners Ltd
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 GKN Screws and Fasteners Ltd filed Critical GKN Screws and Fasteners Ltd
Publication of GB1006509A publication Critical patent/GB1006509A/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
    • F16B23/00—Specially shaped nuts or heads of bolts or screws for rotations by a tool
    • F16B23/0007—Specially shaped nuts or heads of bolts or screws for rotations by a tool characterised by the shape of the recess or the protrusion engaging the tool
    • F16B23/0023—Specially shaped nuts or heads of bolts or screws for rotations by a tool characterised by the shape of the recess or the protrusion engaging the tool substantially cross-shaped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/44—Making machine elements bolts, studs, or the like
    • B21K1/46—Making machine elements bolts, studs, or the like with heads
    • B21K1/463—Making machine elements bolts, studs, or the like with heads with recessed heads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B15/00—Screwdrivers
    • B25B15/001—Screwdrivers characterised by material or shape of the tool bit
    • B25B15/004—Screwdrivers characterised by material or shape of the tool bit characterised by cross-section
    • B25B15/005—Screwdrivers characterised by material or shape of the tool bit characterised by cross-section with cross- or star-shaped cross-section

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Forging (AREA)
  • Slide Fasteners (AREA)
  • Insertion Pins And Rivets (AREA)
  • Connection Of Plates (AREA)
  • Bolts, Nuts, And Washers (AREA)

Abstract

1,006,509. Making screws. G.K.N. SCREW & FASTENERS Ltd. May 4, 1962 [May 26, 1961], No. 17122/62. Heading B3H. [Also in Divisions B4 and F2] To form a screwhead (see Division F2), by a cold heading operation on wire material, a first punch enlarges the wire end and then a heading punch 34 forms the head and its cruciform recess. A nib projecting from the headforming cavity 36 has four wings 39 for forming the grooves of the screwhead, and the side faces of the wings (when the nib is vertical) are vertical or the faces 46 are undercut as shown making an angle of 20 minutes to the vertical and the faces 47 are oppositely sloped up to 3 degrees to the vertical. To counteract the falling away, from the punch faces, of the screwhead metal, V-sectioned ribs 40 with ridge-extensions 41 are formed on the nib between the wings 39 and these displace the screwhead metal towards the grooves formed by the wings. Instead of ridge-extensions 41, the nib may have projections of annulussegment form, describing a broken annulus, concentric with the nib axis and extending between the wings 39 beyond the ribs 40 but not contacting either.
GB1712262A 1961-05-26 1962-05-04 Improvements in or relating to screw threaded fasteners and drivers for use therewith Expired GB1006509A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11283661A 1961-05-26 1961-05-26

Publications (1)

Publication Number Publication Date
GB1006509A true GB1006509A (en) 1965-10-06

Family

ID=22346082

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1712262A Expired GB1006509A (en) 1961-05-26 1962-05-04 Improvements in or relating to screw threaded fasteners and drivers for use therewith

Country Status (11)

Country Link
AT (2) AT253309B (en)
BE (1) BE618104A (en)
CH (3) CH464117A (en)
DE (3) DE1949486U (en)
DK (1) DK113041B (en)
ES (1) ES277721A1 (en)
FI (1) FI45380C (en)
GB (1) GB1006509A (en)
LU (1) LU41783A1 (en)
MY (1) MY6600087A (en)
NL (2) NL133564C (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4089357A (en) * 1975-07-19 1978-05-16 G.K.N. Fasteners Limited Threaded fastener
GB2129348A (en) * 1982-09-08 1984-05-16 Blum Gmbh Julius Screws
EP0206564A1 (en) * 1985-06-03 1986-12-30 Isotech Consultants Inc. Screw driving socket
GB2203075A (en) * 1987-03-23 1988-10-12 Salice Arturo Spa Method of manufacturing a screw head with crossed slots
US5145302A (en) * 1990-06-05 1992-09-08 Titus Tool Company Limited Screws
US5641258A (en) * 1994-04-14 1997-06-24 Sala; Carlo Recessed screw head
WO1999047821A1 (en) * 1998-03-18 1999-09-23 Casino Y Marin Casmar, S.L. New system for holding and tightening screws
WO2016100110A1 (en) 2014-12-17 2016-06-23 Research Engineering & Manufacturing Inc. Recessed head fastener and driver combination

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4355552A (en) * 1980-04-14 1982-10-26 Technofast, Inc. Recessed head screw
US6223634B1 (en) * 1997-10-03 2001-05-01 Phillips Screw Company Recessed head fastener and driver systems

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2588404A (en) * 1946-09-04 1952-03-11 Herman G Muenchinger Fastening device and method of making same
FR1255865A (en) * 1959-05-05 1961-03-10 Phillips Screw Co Hollow head threaded fastener

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4089357A (en) * 1975-07-19 1978-05-16 G.K.N. Fasteners Limited Threaded fastener
GB2129348A (en) * 1982-09-08 1984-05-16 Blum Gmbh Julius Screws
EP0206564A1 (en) * 1985-06-03 1986-12-30 Isotech Consultants Inc. Screw driving socket
GB2203075A (en) * 1987-03-23 1988-10-12 Salice Arturo Spa Method of manufacturing a screw head with crossed slots
US5145302A (en) * 1990-06-05 1992-09-08 Titus Tool Company Limited Screws
US5641258A (en) * 1994-04-14 1997-06-24 Sala; Carlo Recessed screw head
WO1999047821A1 (en) * 1998-03-18 1999-09-23 Casino Y Marin Casmar, S.L. New system for holding and tightening screws
US6453781B1 (en) 1998-03-18 2002-09-24 Casino Y Marin Casmar, S.L. System for holding and tightening screws
WO2016100110A1 (en) 2014-12-17 2016-06-23 Research Engineering & Manufacturing Inc. Recessed head fastener and driver combination

Also Published As

Publication number Publication date
DE1949486U (en) 1966-11-10
ES277721A1 (en) 1962-10-01
DE1675640B1 (en) 1969-12-11
LU41783A1 (en) 1962-07-25
CH464117A (en) 1968-10-15
FI45380C (en) 1972-05-10
CH451605A (en) 1968-05-15
AT253309B (en) 1967-04-10
BE618104A (en) 1962-09-17
MY6600087A (en) 1966-12-31
NL278918A (en)
DE1950935U (en) 1966-12-01
NL133564C (en)
CH456312A (en) 1968-07-15
DK113041B (en) 1969-02-10
FI45380B (en) 1972-01-31
AT241237B (en) 1965-07-12

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