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
Grant status
Application
Patent type
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.)
G K N SCREWS AND FASTENERS Ltd
Original Assignee
G K N 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

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS, WEDGES, JOINTS OR JOINTING
    • F16B23/00Specially shaped nuts or heads of bolts or screws for rotations by a tool
    • F16B23/0007Specially 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
    • F16B23/0023Specially 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21KMAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00Making machine elements
    • B21K1/44Making machine elements bolts, studs, or the like
    • B21K1/46Making machine elements bolts, studs, or the like with heads
    • B21K1/463Making machine elements bolts, studs, or the like with heads with recessed heads
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B15/00Screwdrivers
    • B25B15/001Screwdrivers characterised by material or shape of the tool bit
    • B25B15/004Screwdrivers characterised by material or shape of the tool bit characterised by cross-section
    • B25B15/005Screwdrivers characterised by material or shape of the tool bit characterised by cross-section with cross- or star-shaped cross-section

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)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US11283661 true 1961-05-26 1961-05-26

Publications (1)

Publication Number Publication Date
GB1006509A true 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 (7)

Country Link
BE (1) BE618104A (en)
DE (3) DE1950935U (en)
DK (1) DK113041B (en)
FI (1) FI45380C (en)
GB (1) GB1006509A (en)
LU (1) LU41783A1 (en)
NL (2) NL278918A (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 A threaded fastener head recess

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 Type
DE1950935U (en) 1966-12-01 grant
FI45380C (en) 1972-05-10 grant
LU41783A1 (en) 1962-07-25 application
DE1949486U (en) 1966-11-10 grant
FI45380B (en) 1972-01-31 application
NL133564C (en) grant
DK113041B (en) 1969-02-10 grant
DE1675640B1 (en) 1969-12-11 application
NL278918A (en) application
BE618104A1 (en) grant
BE618104A (en) 1962-09-17 grant

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