GB357468A - Improvements in the heads of screws and bolts - Google Patents

Improvements in the heads of screws and bolts

Info

Publication number
GB357468A
GB357468A GB409531A GB409531A GB357468A GB 357468 A GB357468 A GB 357468A GB 409531 A GB409531 A GB 409531A GB 409531 A GB409531 A GB 409531A GB 357468 A GB357468 A GB 357468A
Authority
GB
United Kingdom
Prior art keywords
bolts
screws
heads
fletton
peterborough
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
GB409531A
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 GB409531A priority Critical patent/GB357468A/en
Publication of GB357468A publication Critical patent/GB357468A/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
    • F16B23/0092—Specially shaped nuts or heads of bolts or screws for rotations by a tool with a head engageable by two or more different tools

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Piles And Underground Anchors (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Medicines Containing Plant Substances (AREA)

Abstract

357,468. Screws. ATKINS, H. F., Old Fletton, Peterborough. Feb. 10, 1931, No. 4095. [Classes 89 (i) and 89 (ii).] An hexagonal or square-headed screw is formed with a polygonal recess to provide an additional means of turning, particularly for use in inaccessible positions. Specification 13002/15, [Class 89 (i), Bolts &c.], is referred to.
GB409531A 1931-02-10 1931-02-10 Improvements in the heads of screws and bolts Expired GB357468A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB409531A GB357468A (en) 1931-02-10 1931-02-10 Improvements in the heads of screws and bolts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB409531A GB357468A (en) 1931-02-10 1931-02-10 Improvements in the heads of screws and bolts

Publications (1)

Publication Number Publication Date
GB357468A true GB357468A (en) 1931-09-24

Family

ID=9770645

Family Applications (1)

Application Number Title Priority Date Filing Date
GB409531A Expired GB357468A (en) 1931-02-10 1931-02-10 Improvements in the heads of screws and bolts

Country Status (1)

Country Link
GB (1) GB357468A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2421181A (en) * 1943-01-23 1947-05-27 Batchelder James William Stud bolt
US3283638A (en) * 1964-05-04 1966-11-08 Robertson Mfg Co Socket head screw
US3342236A (en) * 1966-03-07 1967-09-19 Isabel Place Self-locking bolt
DE2603996A1 (en) * 1976-02-03 1977-10-06 Hofmann SCREW AND NUT COMBINATION SET FOR STATIC VIBRATING OR SLIP-RESISTANT HV CONNECTIONS ETC.
US4228722A (en) * 1978-04-04 1980-10-21 Kabushiki Kaisha Aoyama Seisakusho Upset bolt
GB2131113A (en) * 1982-11-25 1984-06-13 Chang Chung Hsing Bolt driving formation
US4911593A (en) * 1989-05-02 1990-03-27 Kephart R Dewain Ratchet driven threaded fasteners
GB2250559A (en) * 1990-10-03 1992-06-10 Illinois Tool Works Recess for aligning tool on non-circular fastener head
WO2002075167A1 (en) * 2001-03-15 2002-09-26 Hexhead Cap Screw Investments (Pty) Limited Threaded fastener
US6685412B2 (en) * 2001-10-19 2004-02-03 Cross Medical Products, Inc. Multi-lobe torque driving recess and tool in particular for an orthopedic implant screw

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2421181A (en) * 1943-01-23 1947-05-27 Batchelder James William Stud bolt
US3283638A (en) * 1964-05-04 1966-11-08 Robertson Mfg Co Socket head screw
US3342236A (en) * 1966-03-07 1967-09-19 Isabel Place Self-locking bolt
DE2603996A1 (en) * 1976-02-03 1977-10-06 Hofmann SCREW AND NUT COMBINATION SET FOR STATIC VIBRATING OR SLIP-RESISTANT HV CONNECTIONS ETC.
US4228722A (en) * 1978-04-04 1980-10-21 Kabushiki Kaisha Aoyama Seisakusho Upset bolt
GB2131113A (en) * 1982-11-25 1984-06-13 Chang Chung Hsing Bolt driving formation
US4911593A (en) * 1989-05-02 1990-03-27 Kephart R Dewain Ratchet driven threaded fasteners
GB2250559A (en) * 1990-10-03 1992-06-10 Illinois Tool Works Recess for aligning tool on non-circular fastener head
GB2250559B (en) * 1990-10-03 1995-03-08 Illinois Tool Works Fastener-driving tool
WO2002075167A1 (en) * 2001-03-15 2002-09-26 Hexhead Cap Screw Investments (Pty) Limited Threaded fastener
US6685412B2 (en) * 2001-10-19 2004-02-03 Cross Medical Products, Inc. Multi-lobe torque driving recess and tool in particular for an orthopedic implant screw

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