US141477A - Improvement in wrenches - Google Patents

Improvement in wrenches Download PDF

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Publication number
US141477A
US141477A US141477DA US141477A US 141477 A US141477 A US 141477A US 141477D A US141477D A US 141477DA US 141477 A US141477 A US 141477A
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Prior art keywords
wrench
wrenches
handle
improvement
slot
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Expired - Lifetime
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    • 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
    • B25B13/00—Spanners; Wrenches
    • B25B13/48—Spanners; Wrenches for special purposes

Definitions

  • the awing represents a perspective view of the Wrench.
  • the object of my invention is to provide a convenient-sized bolt-wrench possessing the requisite strength for light or heavy work; and consists of a tapered slot, the large end of which is toward the handle of the wrench, and the other end is closed, and the inner surface of one side of the wrench is serrated.
  • A is the Wrench, and B the handle.
  • C is an elongated tapered slot, the large end of which is toward the handle,and the other end D is closed, and the inner surface cl of one side is serrated.
  • the largest bolts, which require the greatest force to operate them, are necessarily operated by the upper part of an open end wrench, Where pressure causes the greatest strain upon the jaws; but by making the Wrench with the large end of the slot to the handle, as shown in the drawing, the largest bolts are operated by that part of the wrench which is nearest to the handle, where the same degree of pressure causes the least strain up-V on the wrench.
  • This arrangement, and the closing of the end, as described, greatly increase the strength of the wrench,which is of special advantage for heavy work requiring such strength as with an open end can be obtained only by making the tool so large as to render it inconvenient for use.
  • the wrench'A B having tapered slot C,With the large end of the slot toward the handle and the other end D closed,'and the side d serrated, substantially as shown and described.

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

Description

S. W. WAKEFIELD.
Wrenches.
N0, 141,477I PatentedAugust, 1873.
UNITED STATES PATENT FFICE.
SAMUEL W. WAKEFIELD, OF KEOKUK, IOWA.
IMPROVEMENT IN WRENCHES.
Specification forming part of Letters Patent No. 141,477, dated August 5, 1873; application filed May 16,1813.
To all whom it may concern:
Be it known that I, SAMUEL W. WAKE- vFIELD, of Keokuk, in the county of Lee and State of Iowa, have invented certain new and useful Improvements in Wrenches; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use it, reference being had to the accompanying drawings, which form p rt of this specification.
The awing represents a perspective view of the Wrench.
The object of my invention is to provide a convenient-sized bolt-wrench possessing the requisite strength for light or heavy work; and consists of a tapered slot, the large end of which is toward the handle of the wrench, and the other end is closed, and the inner surface of one side of the wrench is serrated.
A is the Wrench, and B the handle. C is an elongated tapered slot, the large end of which is toward the handle,and the other end D is closed, and the inner surface cl of one side is serrated.
The largest bolts, which require the greatest force to operate them, are necessarily operated by the upper part of an open end wrench, Where pressure causes the greatest strain upon the jaws; but by making the Wrench with the large end of the slot to the handle, as shown in the drawing, the largest bolts are operated by that part of the wrench which is nearest to the handle, where the same degree of pressure causes the least strain up-V on the wrench. This arrangement, and the closing of the end, as described, greatly increase the strength of the wrench,which is of special advantage for heavy work requiring such strength as with an open end can be obtained only by making the tool so large as to render it inconvenient for use.
What I claim, and desire to secure by Let.
ters Patent, is-
The wrench'A B having tapered slot C,With the large end of the slot toward the handle and the other end D closed,'and the side d serrated, substantially as shown and described.
In testimony that I claim the foregoing I have hereunto set my hand this 7th day of May, 1873.
SAMUEL W. WAKEFIELD.
Witnesses HENRY W. RoTHERT, W. B. COLLINS.
US141477D Improvement in wrenches Expired - Lifetime US141477A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030093061A1 (en) * 2001-11-13 2003-05-15 Ganem Charles F. Anti-drawback medical valve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030093061A1 (en) * 2001-11-13 2003-05-15 Ganem Charles F. Anti-drawback medical valve

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