US131828A - Improvement in rotary wrenches - Google Patents

Improvement in rotary wrenches Download PDF

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Publication number
US131828A
US131828A US131828DA US131828A US 131828 A US131828 A US 131828A US 131828D A US131828D A US 131828DA US 131828 A US131828 A US 131828A
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United States
Prior art keywords
improvement
wrench
rotary
pawls
wheel
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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
    • B25B13/46—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle
    • B25B13/461—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member
    • B25B13/462—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member the ratchet parts engaging in a direction radial to the tool operating axis
    • B25B13/463—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member the ratchet parts engaging in a direction radial to the tool operating axis a pawl engaging an externally toothed wheel

Definitions

  • Figure 1 t represents a face view of the wrench, showing the adjustable jaws, the pawls, and the wheel in which the pawls work; and Fig. 2 is an edge View of the same.
  • A is the head.
  • BB are the jaws.
  • D is a cog-wheel on the back of the head, having a tubular neck, E, with a collar.
  • F The handle F is connected with the wheel and head by means of the strap G, which passes around i the neck.
  • H H are two pawls, which are jointed to the handle by the pivot-screw I and halved together, so that one rests upon the other.
  • J is a spiral spring, by which the pawls are connected; and K, an eccentric dog, which is operated by a thumb-screw, L, on the back of the wrench, by which either of the pawls is made to engage with the cogged wheel D.
  • the head of the wrench is revolved by workingthe handle back and forth.
  • the pawl H is engaged, and by working the handle the wrench will be revolved to the right.
  • the pawl H will be disengaged, and H will engage with the wheel, and the Wrench will be rotated the other way.
  • the disengaged pawl will be held by the dog, while the spiral spring will hold the other pawl to its work.

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

Description

A. rTcHERf Improvement in Rotary-Wrench.
Patented Oct. 1 1872.
Witnwiriz:
giuminr.
UNITED STATES PATENT OFFICE.
ALMON PITOHER, QF FREEDOM, MINNESOTA, ASSIGNOR OF ONE-HALF HIS RIGHT TO LESTER D. PITGHER, OF DIXON, ILLINOIS.
IMPROVEMENT lN ROTARY WRENCHES.
Specification forming part of Letters Patent No. 131,828, dated October 1, 1872.
are used in turning the jaws of a rotary wrench,
as hereinafter fully described.
In the accompanying drawing, Figure 1 t represents a face view of the wrench, showing the adjustable jaws, the pawls, and the wheel in which the pawls work; and Fig. 2 is an edge View of the same.
Similar letters of reference indicate corresponding parts.
A is the head. BB are the jaws. D is a cog-wheel on the back of the head, having a tubular neck, E, with a collar. F. The handle F is connected with the wheel and head by means of the strap G, which passes around i the neck. H H are two pawls, which are jointed to the handle by the pivot-screw I and halved together, so that one rests upon the other. J is a spiral spring, by which the pawls are connected; and K, an eccentric dog, which is operated by a thumb-screw, L, on the back of the wrench, by which either of the pawls is made to engage with the cogged wheel D. The head of the wrench is revolved by workingthe handle back and forth. As seen in Fig. 1, the pawl H is engaged, and by working the handle the wrench will be revolved to the right. By turning the dog round the pawl H will be disengaged, and H will engage with the wheel, and the Wrench will be rotated the other way. The disengaged pawl will be held by the dog, while the spiral spring will hold the other pawl to its work.
Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-
The two pivoted independent pawls H H, pressed toward each other by spring J, and held separately oil from wheel D by eccentric (log K, as and for the purpose described.
ALMON P-ITOHER. Witnesses:
. M. B. DoBsoN, KELSEY Onn'rrss.
US131828D Improvement in rotary wrenches Expired - Lifetime US131828A (en)

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