GB370540A - Screw driver - Google Patents

Screw driver

Info

Publication number
GB370540A
GB370540A GB283431A GB283431A GB370540A GB 370540 A GB370540 A GB 370540A GB 283431 A GB283431 A GB 283431A GB 283431 A GB283431 A GB 283431A GB 370540 A GB370540 A GB 370540A
Authority
GB
United Kingdom
Prior art keywords
screw driver
screw
bragdon
roundheaded
bergemann
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
GB283431A
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.)
FREDERICK ROBERT BERGEMANN
Original Assignee
FREDERICK ROBERT BERGEMANN
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 FREDERICK ROBERT BERGEMANN filed Critical FREDERICK ROBERT BERGEMANN
Priority to GB283431A priority Critical patent/GB370540A/en
Publication of GB370540A publication Critical patent/GB370540A/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
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/02—Arrangements for handling screws or nuts
    • B25B23/08—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation
    • B25B23/10—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation using mechanical gripping means
    • B25B23/105—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation using mechanical gripping means the gripping device being an integral part of the driving bit
    • B25B23/106—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation using mechanical gripping means the gripping device being an integral part of the driving bit the driving bit being a blade

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Facsimile Heads (AREA)

Abstract

370,540. Screwdrivers. BERGEMANN, R. R., 1109, Bragdon Avenue, Pueblo, Colorado, U.S.A. Jan. 28, 1931, No. 2834. [Class 61 (iii).] A screwdriver shank 11 terminating in a driver blade 12 has lateral notches 20, 21 coacting with a resilient auxiliary blade 13 for holding countersunk or roundheaded screws respectively for the initial threading of the screw into the work.
GB283431A 1931-01-28 1931-01-28 Screw driver Expired GB370540A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB283431A GB370540A (en) 1931-01-28 1931-01-28 Screw driver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB283431A GB370540A (en) 1931-01-28 1931-01-28 Screw driver

Publications (1)

Publication Number Publication Date
GB370540A true GB370540A (en) 1932-04-14

Family

ID=9746811

Family Applications (1)

Application Number Title Priority Date Filing Date
GB283431A Expired GB370540A (en) 1931-01-28 1931-01-28 Screw driver

Country Status (1)

Country Link
GB (1) GB370540A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2192576A (en) * 1986-07-19 1988-01-20 Neill Tools Limited Screwdriver
WO2007000595A1 (en) * 2005-06-29 2007-01-04 Aquamark Holdings (Proprietary) Limited Screw driver
US7294170B2 (en) 1997-10-01 2007-11-13 Invacare Corporation Apparatus for compressing and storing oxygen enriched gas

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2192576A (en) * 1986-07-19 1988-01-20 Neill Tools Limited Screwdriver
US7294170B2 (en) 1997-10-01 2007-11-13 Invacare Corporation Apparatus for compressing and storing oxygen enriched gas
WO2007000595A1 (en) * 2005-06-29 2007-01-04 Aquamark Holdings (Proprietary) Limited Screw driver

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