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GB191318702A - Improvements in Screw-drivers. - Google Patents

Improvements in Screw-drivers.

Info

Publication number
GB191318702A
GB191318702A GB191318702DA GB191318702A GB 191318702 A GB191318702 A GB 191318702A GB 191318702D A GB191318702D A GB 191318702DA GB 191318702 A GB191318702 A GB 191318702A
Authority
GB
United Kingdom
Prior art keywords
drivers
screw
recesses
greenhalgh
screwdrivers
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
Inventor
Fred Harry Greenhalgh
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
Application granted granted Critical
Publication of GB191318702A publication Critical patent/GB191318702A/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
    • B25B15/007—Screwdrivers characterised by material or shape of the tool bit characterised by cross-section with blade of flat or substantially flat cross-section

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Connection Of Plates (AREA)
  • Dowels (AREA)

Abstract

18,702. Greenhalgh, F. H. Aug. 18. Screwdrivers. - A screwdriver has channels or recesses a in its opposite sides, and the flanges are tapered off at b to the thickness of the web c between the recesses.
GB191318702D 1913-08-18 1913-08-18 Improvements in Screw-drivers. Expired GB191318702A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191318702T 1913-08-18

Publications (1)

Publication Number Publication Date
GB191318702A true GB191318702A (en) 1914-01-29

Family

ID=32579042

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191318702D Expired GB191318702A (en) 1913-08-18 1913-08-18 Improvements in Screw-drivers.

Country Status (1)

Country Link
GB (1) GB191318702A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2814223A (en) * 1957-11-26 cheatle
US4016912A (en) * 1975-12-15 1977-04-12 St Amour Lionel Screwdriver for slotted head screw

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2814223A (en) * 1957-11-26 cheatle
US4016912A (en) * 1975-12-15 1977-04-12 St Amour Lionel Screwdriver for slotted head screw

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