GB950544A - Bit end of tool for driving screw fasteners - Google Patents

Bit end of tool for driving screw fasteners

Info

Publication number
GB950544A
GB950544A GB1778262A GB1778262A GB950544A GB 950544 A GB950544 A GB 950544A GB 1778262 A GB1778262 A GB 1778262A GB 1778262 A GB1778262 A GB 1778262A GB 950544 A GB950544 A GB 950544A
Authority
GB
United Kingdom
Prior art keywords
shank
bit
side faces
bit end
tip
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
GB1778262A
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.)
Reed and Prince Manufacturing Co
Original Assignee
Reed and Prince Manufacturing Co
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 US184214A external-priority patent/US3133568A/en
Application filed by Reed and Prince Manufacturing Co filed Critical Reed and Prince Manufacturing Co
Publication of GB950544A publication Critical patent/GB950544A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D7/00—Modifying the physical properties of iron or steel by deformation
    • C21D7/02—Modifying the physical properties of iron or steel by deformation by cold working
    • C21D7/04—Modifying the physical properties of iron or steel by deformation by cold working of the surface
    • C21D7/06—Modifying the physical properties of iron or steel by deformation by cold working of the surface by shot-peening or the like
    • 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
    • B25B15/002—Screwdrivers characterised by material or shape of the tool bit characterised by material used or surface finishing

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Portable Nailing Machines And Staplers (AREA)

Abstract

950,544. Making screwdrivers. REED & PRINCE MANUFACTURING CO. May 9, 1962 [Oct. 3, 1961; April 2, 1962], No. 17782/62. Heading B34. [Also in Division B4] The bit end of a screwdriver has a roughened surface produced by shot peening. As shown, the driving end of the shank 2 has four equally spaced vanes, the outer surfaces of which converge towards the tip. The side faces 8, 10 of each vane which are equally spaced respectively on opposite sides of a radius of the shank, are either parallel to each other or converge slightly towards the tip. After being shot peened, the side faces 8, 10 are scored with parallel lines 20, each of which preferably extends at approximately right angles to the axis of the shank 2 and which may extend entirely across or only partially across each side face. The entire bit end is then heated in a neutral salt in a gas fired pot furnace. Following the heat treatment the bit is again shot peened to increase the hardness of the outer surface. The first shot peening step and heat treating step may be omitted. Only some of the side faces of the tool bit may be treated.
GB1778262A 1961-10-03 1962-05-09 Bit end of tool for driving screw fasteners Expired GB950544A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US14271961A 1961-10-03 1961-10-03
US184214A US3133568A (en) 1962-04-02 1962-04-02 Bit end of tool for driving screw fastener

Publications (1)

Publication Number Publication Date
GB950544A true GB950544A (en) 1964-02-26

Family

ID=26840359

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1778262A Expired GB950544A (en) 1961-10-03 1962-05-09 Bit end of tool for driving screw fasteners

Country Status (1)

Country Link
GB (1) GB950544A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001043922A1 (en) * 1999-12-15 2001-06-21 Wera Werk Hermann Werner Gmbh & Co. Kg Hand tool, in particular, a screwdriver
EP3616842A1 (en) * 2018-08-20 2020-03-04 Milwaukee Electric Tool Corporation Tool bit
USD906081S1 (en) 2018-08-20 2020-12-29 Milwaukee Electric Tool Corporation Driver bit
US11342101B2 (en) 2018-07-20 2022-05-24 Milwaukee Electric Tool Corporation Magnetism booster assembly

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001043922A1 (en) * 1999-12-15 2001-06-21 Wera Werk Hermann Werner Gmbh & Co. Kg Hand tool, in particular, a screwdriver
US6883405B2 (en) 1999-12-15 2005-04-26 Wera Werk Hermann Werner Gmbh & Co. Kg Hand tool, in particular, a screwdriver
US11342101B2 (en) 2018-07-20 2022-05-24 Milwaukee Electric Tool Corporation Magnetism booster assembly
US11783977B2 (en) 2018-07-20 2023-10-10 Milwaukee Electric Tool Corporation Magnetism booster assembly
EP3616842A1 (en) * 2018-08-20 2020-03-04 Milwaukee Electric Tool Corporation Tool bit
USD906081S1 (en) 2018-08-20 2020-12-29 Milwaukee Electric Tool Corporation Driver bit
USD933443S1 (en) 2018-08-20 2021-10-19 Milwaukee Electric Tool Corporation Driver bit
US11413729B2 (en) 2018-08-20 2022-08-16 Milwaukee Electric Tool Corporation Tool bit
US11883931B2 (en) 2018-08-20 2024-01-30 Milwaukee Electric Tool Corporation Tool bit

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