GB719680A - Improved screw driver bits - Google Patents

Improved screw driver bits

Info

Publication number
GB719680A
GB719680A GB2330652A GB2330652A GB719680A GB 719680 A GB719680 A GB 719680A GB 2330652 A GB2330652 A GB 2330652A GB 2330652 A GB2330652 A GB 2330652A GB 719680 A GB719680 A GB 719680A
Authority
GB
United Kingdom
Prior art keywords
shoulder
screw driver
improved screw
group xxii
driver bits
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
GB2330652A
Inventor
Frank Kinney Brown
Harvey Fisk Phipard
George Edwin Jenney
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.)
Research Engineering and Manufacturing Inc
Original Assignee
Research Engineering and Manufacturing Inc
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 Research Engineering and Manufacturing Inc filed Critical Research Engineering and Manufacturing Inc
Priority to GB2330652A priority Critical patent/GB719680A/en
Publication of GB719680A publication Critical patent/GB719680A/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
    • B25B23/0007—Connections or joints between tool parts
    • B25B23/0035—Connection means between socket or screwdriver bit and tool
    • 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
    • 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
    • B25B15/005—Screwdrivers characterised by material or shape of the tool bit characterised by cross-section with cross- or star-shaped cross-section

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)

Abstract

719,680. Screwdrivers. RESEARCH ENGINEERING & MANUFACTURING, Inc. March 5, 1951, No. 23306/52. Divided out of 719,625, [Group XXII]. Class 61. [Also in Group XXII] A cruciform screwdriver bit, for screws with correspondingly recessed heads, made from bar stock by the process forming the subject of Specification 719,625, has a pointed, wearresisting end 12, slightly enlarged parts 20 of the ribs that form a shoulder 21, and recesses 36 that co-operate with a detent ball 40 in a socket formed in a handled shank or in a spindle for power operation. The shoulder 21 is spaced from the end face 24 of the holder 25, the rear of the bit taking the thrust during driving. Specification 673,303 also is referred to.
GB2330652A 1951-03-05 1951-03-05 Improved screw driver bits Expired GB719680A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2330652A GB719680A (en) 1951-03-05 1951-03-05 Improved screw driver bits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2330652A GB719680A (en) 1951-03-05 1951-03-05 Improved screw driver bits

Publications (1)

Publication Number Publication Date
GB719680A true GB719680A (en) 1954-12-08

Family

ID=10193483

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2330652A Expired GB719680A (en) 1951-03-05 1951-03-05 Improved screw driver bits

Country Status (1)

Country Link
GB (1) GB719680A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4509887A (en) * 1980-11-13 1985-04-09 Santrade Ltd. Means for connecting a male part to a female part
US20130214496A1 (en) * 2012-02-18 2013-08-22 Jack Lin Chuck

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4509887A (en) * 1980-11-13 1985-04-09 Santrade Ltd. Means for connecting a male part to a female part
US20130214496A1 (en) * 2012-02-18 2013-08-22 Jack Lin Chuck

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