GB837889A - Screw driver bit - Google Patents

Screw driver bit

Info

Publication number
GB837889A
GB837889A GB514057A GB514057A GB837889A GB 837889 A GB837889 A GB 837889A GB 514057 A GB514057 A GB 514057A GB 514057 A GB514057 A GB 514057A GB 837889 A GB837889 A GB 837889A
Authority
GB
United Kingdom
Prior art keywords
bit
shank
forced
stock
screw driver
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
GB514057A
Inventor
Carl Herman Ansingh
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.)
PL Robertson Manufacturing Co Ltd
Original Assignee
PL Robertson Manufacturing Co 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 PL Robertson Manufacturing Co Ltd filed Critical PL Robertson Manufacturing Co Ltd
Priority to GB514057A priority Critical patent/GB837889A/en
Publication of GB837889A publication Critical patent/GB837889A/en
Expired legal-status Critical Current

Links

Classifications

    • 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

Landscapes

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

Abstract

837,889. Making screwdrivers. ROBERTSON MFG. CO. Ltd., P. L. Feb. 14, 1957, No. 5140/57. Class 83 (2). [Also in Group XXIII] A screwdriver bit comprising a driving portion 3 tapering to a blunt conical end 4 and a shank 2 connected to the portion 3 by an enlarged shoulder 5 is formed from a length of drawn metal stock of square cross-section, by cold forging, the stock being forced into a die having the outlines of the parts 3, 5. The bit is hardened in the usual manner. In use the bit is forced into a tubular tool shank member 16 with the corners 17 of the bit shank biting into the softer metal of the shank.
GB514057A 1957-02-14 1957-02-14 Screw driver bit Expired GB837889A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB514057A GB837889A (en) 1957-02-14 1957-02-14 Screw driver bit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB514057A GB837889A (en) 1957-02-14 1957-02-14 Screw driver bit

Publications (1)

Publication Number Publication Date
GB837889A true GB837889A (en) 1960-06-15

Family

ID=9790453

Family Applications (1)

Application Number Title Priority Date Filing Date
GB514057A Expired GB837889A (en) 1957-02-14 1957-02-14 Screw driver bit

Country Status (1)

Country Link
GB (1) GB837889A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017069953A1 (en) * 2015-10-19 2017-04-27 Bryce Fastener Company, Inc. Methods and apparatus for an enhanced driving bit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017069953A1 (en) * 2015-10-19 2017-04-27 Bryce Fastener Company, Inc. Methods and apparatus for an enhanced driving bit
US9821442B2 (en) 2015-10-19 2017-11-21 Bryce Fastener Company, Inc. Methods and apparatus for an enhanced driving bit

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