Pipe-Wrench. Page: 2 of 3
[1], 2 p. : ill. ; 23 cm.View a full description of this patent.
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UNITED STATES PATENT OFFICE.
BENJAMIN F. ADAMS, OF STRATFORD, TEXAS, ASSIGNOR OF ONE-HALF TO F. G.
FOXWORTH, OF STRATFORD, TEXAS.
PIPE-WRENCH.Specification of Letters Patent. Patented May 5, 1914.
Application filed March 12, 1913. Serial No. 753,818.To all whom it may concern:
Be it known that I, BENJAMIN F. ADAMS,
citizen of the United States, residing at
Stratford, in the county of Sherman and
5 State .of Texas, have invented certain new
and useful Improvements in Pipe-Wrenches,
of which the following is a specification.
This invention relates to an improvement
in pipe wrenches.
10 The primary object of the invention is to
provide a pipe wrench which may be readily
adjusted to pipes which vary in diameter
and in which the movable jaw member will
be resiliently held in contact with the work.
15 A further object of the invention is to pro-
vide a construction which, while strong and
durable, may be manufactured at a compara-
tively low cost.
For a full understanding of the invention,
20 reference is to be had to the following de-
scription and accompanying drawing, in
which:-
Figure 1 is a side elevation; Fig. 2 is a
perspective view; Fig. 3 is a perspective
25 view of the resilient member which engages
with the pivoted jaw; and Fig. 4 is a per-
spective view of the pivoted jaw.
Corresponding and like parts are referred
to in the following description and indicated
30 in all the views of the drawing by the same
reference characters.
In the drawing, 10 designates the shank of
a wrench which is formed with a curved ex-
tension 11, the inner face 12 of which is pro-
35 vided with a plurality of teeth 13. A jaw
member 14 is pivotally supported on the
shank. This jaw member consists of the
curved work engaging face 15 provided with
a plurality of teeth 16, the teeth being oppo-
40 sitely disposed to those of the work engaging
face 12 of the curved extension which forms
the other jaw member. The body portion 17
of the jaw 14 is provided with the spaced
parallel arms 18 which at their terminals are
45 apertured, receiving a pivot pin 19 which
passes through them and the shank 10.
A sleeve 20 is either formed integral with
or secured to the shank 10. This sleeve is dis-
posed below the pivot point of the jaw 14.
50 A flat spring 21 is arranged on one face of
the shank 10, said spring being provided at
one of its terminals with a yoke 22 which
embraces the shank. The spring 21 extends
through the sleeve 20 being provided adj a-
55 cent its free terminal with lugs 23 whichcontact with the sleeve to prevent the dis-
placement of the spring. The yoke 22 is
preferably formed integral with the spring
and comprises an extension 24 which em-
braces the shank, and a second extension 25 60
which extends transversely of the shank, the
extensions being secured together. The
sleeve 20 is secured to the wrench after the
spring has been placed thereon, the side por-
tions of the sleeve being either welded to 65
the wrench or a bolt may be passed through
both of said side portions and the shank. In
this construction the sides of the yoke ex-
tend midway across the shank to permit of
the formation of a bolt-hole therein without 70
weakening the same.
The yoke 22 of the spring is disposed to
contact with the shank 10, the spring being
moved longitudinally of the shank as the
jaw is opened in order that the jaws may ac- 75
commodate work which varies in diameter.
In placing the wrench on a pipe, the yoke
of the spring is moved longitudinally of
the shank and the pivoted jaw member al-
lowed to open. After the pipe has been 80
grasped between the jaws, the spring is
moved toward the jaw, its terminal 26 con-
tacting with the jaw and maintaining the
same in engagement with the pipe. It will
be noted that the pressure of the pipe on the 85
jaw will prevent the spring from moving
longitudinally of the shank, the spring pre-
venting the jaws from falling off the work
when the same is moved loosely on the work.
It will be noted that normally the spring 90
may slide freely on the shank but that when
the same is forced in contact with the jaw,
the jaw and spring will be held against dis-
placement. When a pipe or other piece of
work is placed between the jaws the body 95
14 will be moved against the tension of the
spring and the spring will bow, slightly
bending at the point where the same extends
through the sleeve which is arranged on the
shank, the lower portion of the spring and 100
the yoke which is formed integral therewith
being brought into binding engagement with
the sleeve and the shank, effectually support-
ing the spring against slipping and the jaw
against movement except such as is per- 105
emitted by the resiliency of the spring be-
tween the sleeve and the jaw. Thus the
pressure of the work supports the spring
against movement longitudinally of the
shank. 1101,095,616.
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Adams, Benjamin F. Pipe-Wrench., patent, May 5, 1914; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth859309/m1/2/: accessed June 20, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.