An Improved Pipe-wrench.
Year: 1893

page_text: Date of Application, 13th May, 1893
Complete Specification Left, 13th Feb., 1894-Accepted, 17th Mar., 1894
PROVISIONAL SPECIFICATION.
An Improved Pipe-wrench.
I, JAMES A. SMITH, of Cleavesville, Gasconade County, Missouri, U.S.A.,
Gentleman, do hereby declare the nature of this invention to be as follows:-
-
This my invention relates to an improved pipe wrench; which is simple in
construction and not liable to get out of order, and is moreover cheap to
manufacture.
A
My improved pipe-wrench consists of a lever or handle bar having an integral
curvilinear jaw formed at one end and which has its inner side toothed.
loose movable jaw, (consisting of an acute angle-shaped section having a convex
toothed engaging face,) is connected to each side of the bar or lever by a bolt
which passes through the jaws and lever at a point adjacent to the apex of the
angle of said jaws and the bend in the lever which forms the integral and
fixed jaw..
1000
W. H. MUNNS,
Applicant's Agent.
An Improved Pipe-wrench.
I, JAMES A. SMITH, of Cleavesville, Gasconade County, Missouri, U.S.A.,
Gentleman, do hereby declare the nature of this invention and in what manner the
same is to be performed, to be particularly described and ascertained in and by the
following statement :-
My invention has relation to improvements in pipe or rod wrenches, and it
consists of a wrench comprising a lever or handle bar having a fixed curvilinear
toothed jaw at one end, a loose jaw formed by two movable toothed sections loosely
connected to the lever or handle bar adjacent to the fixed jaw; the said movable
sections being independently connected to the lever or handle bar, so that they may
be employed alternately or together, as desired, and so that when they are
employed together, a slipping or casual disengagement of one will not affect the
other.
The invention will be fully understood from the following description and
claim when taken in connection with the annexed drawings in which:
Fig. 1, is a lateral view of a wrench embodying my invention.
Fig. 2, is a top plan view of the same, and
Fig. 3, is a perspective view of one section of the movable jaw removed.
Referring by letters to said drawings: A, indicates the lever or handle bar of
my improved wrench, and B, indicates the curvilinear fixed jaw which is preferably
formed integral with one end of the lever or handle bar, and is provided upon
its inner side with the teeth a, designed to bite into a pipe when the wrench is
applied thereto.
Loosely mounted upon a transverse bolt or rivet, or to lateral studs carried by
the lever and situated at the point where the lever or handle bar merges into the
fixed jaw B, are the sections C, forming loose or movable jaws, which are of a
general acute angle shape and are provided with convex engaging edges or faces b,
ns shown.

page_text: The bolt or rivet connecting the sections C, to the lever or handle bar, takes
through the said sections at a point adjacent to the apex of the angle formed by
the straight edges of the sections, whereby it will be seen that when it is desired
to use but one section, the other section will rest in a position so as not to engage
the pipe or otherwise interfere with the manipulation of the wrench.
As better illustrated in Fig. 1, of the drawings, the teeth c, with which the
sections C, are preferably provided, are oppositely disposed to the teeth a, of
the fixed jaw B, whereby a more firm grasp on the pipe or rod to be manipulated
may be obtained.
To use my improved wrench the fixed jaw B, is hooked over the pipe or rod to
be manipulated, and one or both of the sections C, is swung into engagement with
said pipe or rod after which pressure is applied to the lever or handle bar when the
wrench will be fixed with respect to the pipe or rod, and as the pressure is
increased on the lever or handle bar, the jaw will be caused to more firmly
engage the pipe on the principle of forced clamp or wedge forced inward..
It will be understood from the foregoing description that the sections C, are
connected to the lever or handle bar A, in such a manner as to be independent of
each other, whereby one of the sections may be employed alone or the two might
be employed in conjunction, as is most desirable.
By this construction it will be seen that if one of the sections C, is broken, it
may be removed and replaced by a new section, and it will be further perceived
that when the sections C, are employed together or in conjunction, a slipping or
casual movement of one will not tend to move or otherwise affect the other section
which will hold the wrench in firm engagement with the pipe or rod upon which it
is placed.
A wrench of the construction shown and described, may be manufactured very
cheaply and when one of the sections C, is broken or otherwise impaired, the
wrench is not rendered worthless as the broken section may be removed and
replaced by a new jaw without in any manner affecting the lever or handle bar or
the unbroken section.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is :-
A pipe wrench substantially as described consisting essentially of the lever or
handle bar, the fixed curvilinear jaw B, formed at one end of the lever or
handle bar and having its inner side toothed, and the loose or movable jaws C
comprising the independent, acute angle shaped, movable sections, having convex
toothed engaging faces; the said sections C, being independently connected to the
lever or handle bar by a bolt or rivet which takes through the sections at a point
adjacent to the apex of the angle formed by the straight edges thereof, substantially
as and for the purposes set forth.
Dated this 13th day of February 1894.