GB221636A - An improved boring brace - Google Patents

An improved boring brace

Info

Publication number
GB221636A
GB221636A GB2154523A GB2154523A GB221636A GB 221636 A GB221636 A GB 221636A GB 2154523 A GB2154523 A GB 2154523A GB 2154523 A GB2154523 A GB 2154523A GB 221636 A GB221636 A GB 221636A
Authority
GB
United Kingdom
Prior art keywords
crank arms
brace
socket
crank
boring
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
GB2154523A
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
Priority to GB2154523A priority Critical patent/GB221636A/en
Publication of GB221636A publication Critical patent/GB221636A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B45/00—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor
    • B23B45/06—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor driven by man-power

Abstract

221,636. Curtis, R. Aug. 25, 1923. Hand and breast drills.- In boring-braces of the kind in which the crank arms may be adjusted in sockets on the knob and chuck portions to vary the throw of the crank, the crank arms C are secured in the socket A by screws D which screw into both walls of the socket and which pass through clearance holes in the crank arms. A series of spaced apertures E may be provided to receive the clamping screw. The crank arms may be of rectangular cross-section.
GB2154523A 1923-08-25 1923-08-25 An improved boring brace Expired GB221636A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2154523A GB221636A (en) 1923-08-25 1923-08-25 An improved boring brace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2154523A GB221636A (en) 1923-08-25 1923-08-25 An improved boring brace

Publications (1)

Publication Number Publication Date
GB221636A true GB221636A (en) 1924-09-18

Family

ID=10164675

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2154523A Expired GB221636A (en) 1923-08-25 1923-08-25 An improved boring brace

Country Status (1)

Country Link
GB (1) GB221636A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102974863A (en) * 2012-12-11 2013-03-20 衡水供电公司 Simple hand-operated puncher

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102974863A (en) * 2012-12-11 2013-03-20 衡水供电公司 Simple hand-operated puncher

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