US249477A - Wrench - Google Patents

Wrench Download PDF

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Publication number
US249477A
US249477A US249477DA US249477A US 249477 A US249477 A US 249477A US 249477D A US249477D A US 249477DA US 249477 A US249477 A US 249477A
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United States
Prior art keywords
screw
stop
wrench
spring
head
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Expired - Lifetime
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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
    • B25B13/00—Spanners; Wrenches
    • B25B13/10—Spanners; Wrenches with adjustable jaws
    • B25B13/12—Spanners; Wrenches with adjustable jaws the jaws being slidable
    • B25B13/16—Spanners; Wrenches with adjustable jaws the jaws being slidable by screw or nut
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S81/00—Tools
    • Y10S81/03—Wrenches, thread-adjustment lock

Definitions

  • the nature and object of my invention are a stop or spring-catch, in combination with the adjusting-screw which operates the movable jaw of the wrench for the purpose of locking the screw when thejaw has been adjusted.
  • Figure l is an elevation.
  • Fig. 2 is a cross-section, on an enlarged scale, at the dotted line in Fig. 1.
  • Fig. 3 is a sectional view representing the spring-stop on an enlarged scale.
  • the movable jaw b of the ordinary monkeywrench represented by Fig. l, is adjusted toward and from the stationary jaw b by turning screw a in the movable jaw, which is provided with a female screw to receive screw a.
  • the head a of screw a is cylindrical and pivoted in the abntmentgot'handle h..
  • the spring catch or stop 8 is pivoted on pin 0, (shown by dotted lines in Fig. 1,) which is firmly inserted in the end of handle h.
  • One end of stop sis firmly held against the circumference of screwliead a by spring 0.
  • the circumference of screw-head a should be slightly toothed or furrowed, (as it usually is in this class of monkeywrenches,) so that the end of stop 8 may enter the furrows, and thereby prevent the turning of screw a more effectually than by the simple friction of the stop on a screw-head having a smooth circumferential surface.
  • Spring 0 is doubled or'bent over pin 6 between the ears 8 of stop 8, the lower part of the spring resting on the bar d of the wrench, and the upper part pressing against the under side of stop 8, as shown in Figs. 2 and 3.

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

Description

(Np Model.)
A.- NELSON.
WRENCH.
Patented Nov. 15,1881. I
UNITED STATES PATENT ()FFICEO AUGUST NELSON, OF KENT, OHIO.
WRENCH.
I SPECIFICATION forming part of Letters Patent No. 249,477, dated November 15, 1881.
V Application filed May 12, 1881. (No model.)
To all .whom it may concern Be it known that I, AUGUST NELSON, of Kent, Portage county, Ohio, have invented a new and useful Improvemeht in Wrenches, of
i which the following is a specification.
The nature and object of my invention are a stop or spring-catch, in combination with the adjusting-screw which operates the movable jaw of the wrench for the purpose of locking the screw when thejaw has been adjusted.
In the drawings, forming a part of this specification, Figure l is an elevation. Fig. 2 is a cross-section, on an enlarged scale, at the dotted line in Fig. 1. Fig. 3 is a sectional view representing the spring-stop on an enlarged scale.
- The movable jaw b of the ordinary monkeywrench, represented by Fig. l, is adjusted toward and from the stationary jaw b by turning screw a in the movable jaw, which is provided with a female screw to receive screw a. The head a of screw a is cylindrical and pivoted in the abntmentgot'handle h.. The spring catch or stop 8 is pivoted on pin 0, (shown by dotted lines in Fig. 1,) which is firmly inserted in the end of handle h. One end of stop sis firmly held against the circumference of screwliead a by spring 0.
Itis preferable that the circumference of screw-head a should be slightly toothed or furrowed, (as it usually is in this class of monkeywrenches,) so that the end of stop 8 may enter the furrows, and thereby prevent the turning of screw a more effectually than by the simple friction of the stop on a screw-head having a smooth circumferential surface.
Spring 0 is doubled or'bent over pin 6 between the ears 8 of stop 8, the lower part of the spring resting on the bar d of the wrench, and the upper part pressing against the under side of stop 8, as shown in Figs. 2 and 3.
In adjusting the movable jaw 12 by turning screw a the screw-head a should first be released from stop 8 by pressing the thumb or finger on the stop. When the movablejaw has been properly adjusted, then by removing the pressure of" the finger on the stop 8 the reaction of the compressed spring 0 forces the end of stop .9 down on screw-head a to retain it in position. g
I claim as my invention- In a wrench having one of its jaws actuated by a screw, the combination, with the milled head of said screw, of the sprin g-stop 8, attached to the part carrying the stationary jaw of the wrench, substantially as and for the purpose set forth.
AUGUST NELSON.
US249477D Wrench Expired - Lifetime US249477A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2428949A (en) * 1946-03-22 1947-10-14 B M C Mfg Corp Wrench with toggle actuated jaw
US2808751A (en) * 1956-11-09 1957-10-08 James E Fercana Latch for adjusting worm of a movable jaw wrench

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2428949A (en) * 1946-03-22 1947-10-14 B M C Mfg Corp Wrench with toggle actuated jaw
US2808751A (en) * 1956-11-09 1957-10-08 James E Fercana Latch for adjusting worm of a movable jaw wrench

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