GB191217575A - Improvements in Wrenches for Gripping Cylindrical Objects. - Google Patents

Improvements in Wrenches for Gripping Cylindrical Objects.

Info

Publication number
GB191217575A
GB191217575A GB191217575DA GB191217575A GB 191217575 A GB191217575 A GB 191217575A GB 191217575D A GB191217575D A GB 191217575DA GB 191217575 A GB191217575 A GB 191217575A
Authority
GB
United Kingdom
Prior art keywords
chain
block
wrenches
pawl
pivoted
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
James Maher
Harry Edward Peaff
Lawerence Leroy Campbell
Thomas Terry
Original Assignee
James Maher
Harry Edward Peaff
Lawerence Leroy Campbell
Thomas Terry
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
Priority claimed from GB191217575T external-priority
Application filed by James Maher, Harry Edward Peaff, Lawerence Leroy Campbell, Thomas Terry filed Critical James Maher
Application granted granted Critical
Publication of GB191217575A publication Critical patent/GB191217575A/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B13/00Spanners; Wrenches
    • B25B13/48Spanners; Wrenches for special purposes
    • B25B13/50Spanners; Wrenches for special purposes for operating on work of special profile, e.g. pipes
    • B25B13/52Chain or strap wrenches

Abstract

17,575. Maher, J., Pfaff, H. E., Campbell, L. L., and Terry, T. July 29. Chain wrenches.-Relates to pipe wrenches of the kind comprising a serrated gripping-surface acting in conjunction with a chain. The toothed block 5 is slidably mounted in the end of the handle 1 and its shoulders are engaged by cams 9 pivoted on the pin 8 and projecting from a lever 10 connected to the chain 11, whereby, during the operation of the wrench the block is forced outwardly with sufficient force to bite into the pipe or the like. The locking of the chain is effected by a pawl 18 pivoted on a pin 19 in a slot 12 and provided with a concave lower end 20 adapted to engage one of the chain pins or rollers and hold the adjacent links against a surface 15 on a block 13 shaped to conform to the configuration thereof or that the pressure is borne by the block and links and only to a small extent by the chain pins or rollers. A blade spring 21 maintains the pawl in engaged or disengaged position.
GB191217575D 1912-07-29 1912-07-29 Improvements in Wrenches for Gripping Cylindrical Objects. Expired GB191217575A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191217575T 1912-07-29

Publications (1)

Publication Number Publication Date
GB191217575A true GB191217575A (en) 1913-04-10

Family

ID=32642418

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191217575D Expired GB191217575A (en) 1912-07-29 1912-07-29 Improvements in Wrenches for Gripping Cylindrical Objects.

Country Status (1)

Country Link
GB (1) GB191217575A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2834238A (en) * 1956-03-06 1958-05-13 Sr Fredrick D Stover Pipe wrench with cooperating slidable jaw and flexible pipe holding means
US3302497A (en) * 1965-02-23 1967-02-07 Dale D Paden Chain pipe wrench
CN101811291A (en) * 2009-02-19 2010-08-25 纬泰机械(上海)有限公司 Chain clamp

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2834238A (en) * 1956-03-06 1958-05-13 Sr Fredrick D Stover Pipe wrench with cooperating slidable jaw and flexible pipe holding means
US3302497A (en) * 1965-02-23 1967-02-07 Dale D Paden Chain pipe wrench
CN101811291A (en) * 2009-02-19 2010-08-25 纬泰机械(上海)有限公司 Chain clamp

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