GB487153A - Improvements in or relating to screws and screw drivers for use therewith - Google Patents

Improvements in or relating to screws and screw drivers for use therewith

Info

Publication number
GB487153A
GB487153A GB34068/36A GB3406836A GB487153A GB 487153 A GB487153 A GB 487153A GB 34068/36 A GB34068/36 A GB 34068/36A GB 3406836 A GB3406836 A GB 3406836A GB 487153 A GB487153 A GB 487153A
Authority
GB
United Kingdom
Prior art keywords
screws
relating
use therewith
screw drivers
wings
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
GB34068/36A
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
Priority claimed from US54100A external-priority patent/US2058197A/en
Application filed by Individual filed Critical Individual
Publication of GB487153A publication Critical patent/GB487153A/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
    • F16B23/0015—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 rectangular, e.g. one-slot head

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Portable Nailing Machines And Staplers (AREA)

Abstract

487,153. Screwdrivers. CLARK, W. K. Dec. 11, 1936, No. 34068. Convention date, Dec. 12, 1935. [Class 61 (iii)] [Also in Group XXV] A screwdriver comprises a shank 28 terminating in a bit comprising a substantially conical spine 29 and wings 30 of the form shown: the spine is roughened or fluted at 32 and rounded at 29. The wings 30 may converge slightly towards the bottom.
GB34068/36A 1935-12-12 1936-12-11 Improvements in or relating to screws and screw drivers for use therewith Expired GB487153A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US54100A US2058197A (en) 1935-12-12 1935-12-12 Screw
US101623A US2160244A (en) 1935-12-12 1936-09-19 Screw driver

Publications (1)

Publication Number Publication Date
GB487153A true GB487153A (en) 1938-06-13

Family

ID=26732645

Family Applications (1)

Application Number Title Priority Date Filing Date
GB34068/36A Expired GB487153A (en) 1935-12-12 1936-12-11 Improvements in or relating to screws and screw drivers for use therewith

Country Status (3)

Country Link
US (1) US2160244A (en)
BE (1) BE418916A (en)
GB (1) GB487153A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1029620B (en) * 1954-05-14 1958-05-08 Rudolph M Vaughn Screw head that has a screwdriver slot with undercut side walls
DE1675656B1 (en) * 1961-03-31 1970-04-23 Pierre Launay screw

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2502648A (en) * 1944-10-24 1950-04-04 Horace W Hacker Screw
US2676510A (en) * 1950-09-23 1954-04-27 Nat Screw & Mfg Company Screw driver slot with driver wedging means
US4497225A (en) * 1983-05-06 1985-02-05 John Vaughn High torque fastener and driving tool
US4589154A (en) * 1983-05-06 1986-05-20 John Vaughn Method and apparatus for forming the head of a high torque fastener
US4590825A (en) * 1983-05-06 1986-05-27 John Vaughn High torque fastener and driving tool
US4670927A (en) * 1983-05-06 1987-06-09 John Vaughn Method and apparatus for forming the head of a high torque fastener
US8955418B2 (en) 2013-03-08 2015-02-17 Black & Decker Inc. Threaded fastener driving tool

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1029620B (en) * 1954-05-14 1958-05-08 Rudolph M Vaughn Screw head that has a screwdriver slot with undercut side walls
DE1675656B1 (en) * 1961-03-31 1970-04-23 Pierre Launay screw

Also Published As

Publication number Publication date
US2160244A (en) 1939-05-30
BE418916A (en)

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