Year: 1897

page_text: I, JOSEPH BELL, residing at Troutdale, in the County of Multnomah, and State
of Oregon, United States of America, Mechanical Engineer, do hereby declare the
nature of this invention to be as follows:-
:-
This invention relates to wrenches, and particularly to what are known as pipe
wrenches; and the object thereof is to provide an improved device of this class
whereby a pipe or other cylindrical body may be grasped and securely held by a
handle or manipulated in any desired manner.
In the practice of my invention I provide a handle, one end of which is pro-
vided with a metal head to which is secured side jaws which form a part of said
head, and these jaws are provided on their inner sides with longitudinal cavities
or recesses, in which the sides of the head of the handle fit, and said jaws are
bolted to the head of the handle or otherwise secured thereto.
The outer ends of the jaws of the metal head are preferably segmental or cir-
cular in form, and formed on the inner side thereof are semi-circular cavities or
recesses whereby sprocket teeth are provided, and I also provide a chain one end
of which is connected with a yoke, and the head of the handle is pivoted between
the free ends of the sides of said yoke by means of a pivot pin or bolt, which con-
stitutes one of the bolts by which the jaws of the metal head are secured thereto.
The said yoke consists of two side arms or plates, the outer ends of which are
provided with inwardly directed cylindrical heads which fit into corresponding
cavities formed in the outer sides of the jaws of the metal head or handle, and
these ends or heads of said side arms or plates are provided with transverse bores
or passages through which is passed a pin or bolt.
The head of the yoke consists of inwardly directed tubular extensions formed
on said side arms or plates, and through which a bolt or pin is passed, and
mounted on said bolt or pin between said inwardly directed tubular extensions
is a tubular sleeve which preferably consists of two sections each of which is
provided at its inner end with a projecting blade, and said plates project side by
side, and provide means for connectng the chain with the yoke.
The chain consists of two forms of links, one of which constitutes the hinged
link of the chain, while the other constitutes the side link of the chain, and these
links are connected and held in the manner of an ordinary drive chain.
The side links are composed of two separate similar pieces, and each of these is
provided on its inner surface with inwardly directed cylindrical shoulders or pro-
jections which pass through transverse holes or openings in the central or chain
links, and pivot pins are provided by which the side links and inner or chain
links are connected; and these pivot pins may be headed or riveted in any desired
manner, and the side links of the chain for a predetermined distance from the
end thereof, are provided with cylindrical lugs or projections on their opposite
sides, and the pivot pins by which the side links and central links of the chain
are connected, pass through these lugs or projections.

page_text: In practice, the chain is passed around the pipe, and the free end thereof is
passed between the side arms of the plates of the yoke, and then by moving the
handle bar back and forth, the sprockets or projections on the jaws of the metal
head of the handle will engage with said lugs or projections on each side of the
chain, and said chain may be thus drawn through the yoke, and caused to firmly
grasp and hold the pipe, and it will thus be seen that I accomplish the object
of my invention by means of a device which is simple in construction and
operation, and one which is well adapted to accomplish the result for which it is
intended.
DL: 0011 1.
1
1007
1
Improvements in Pipe Wrenches.
I, JOSEPH BELL, residing at Troutdale, in the County of Multanomah, and
State of Oregon, United States of America, Mechanical Engineer, 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: ―
This invention relates to wrenches, and particularly to what are known as pipe
wrenches; and the object thereof is to provide an improved device of this class
whereby a pipe or other cylindrical body may be grasped and securely hell, and
handled or manipulated in any desired manner, without injury thereto.
The invention is fully disclosed in the following specification, of which the
accompanying drawing forms a part, in which:-
Fig. 1, is a sectional end view of a pipe, and a side view of my improved wrench
connected therewith;
Fig. 2, a view at right angles thereto;
Fig. 3, an inside view of a jaw which forms a part of a head connected with
the handle of the wrench;
Fig. 4, a central longitudinal section of a chain which I employ, and which
constitutes a part of my improved wrench;
Fig. 5, a plan and side view of one of the links of said chain; and,
Fig. 6, a plan and side view of the other link.
In the practice of my invention, I provide a handle 5, one end of which is pro-
vided with a head 6 to which are secured side jaws 7, which form a part of said
head, and these jaws are provided on their inner sides with longitudinal cavities
or recesses 8, in which the sides of the head 6 of the handle fit, and said jaws 7 are
bolted to the head of the handle as shown at 9, and 10, in Figs. 1, and 2.
The outer ends of the jaws 7, of the head of the handle, are preferably segmental
or circular in form as shown at 11, and formed on the inner side thereof, are
semi-circular cavities or recesses 12, whereby sprocket teeth or projections 13, are
provided, and I also provide a chain 14, one end of which is connected with a
yoke 15, as shown at 16, and the head of the handle is pivoted between the free
ends of the sides of said yoke, by means of the pivot pin or bolt 10, which con-
stitutes one of the bolts by which the jaws 7 of the head 6 are secured thereto.
The details of the construction of the chain 14, the yoke 15, and the con-
nection of the ladder with the head of the handle are best shown in Fig. 4, and
on reference to said figure, it will be seen that said yoke consists of the side arms
or plates 17, the outer ends of which are provided with inwardly directed

page_text: cylindrical heads 18, which fit into corresponding cavities formed in the outer
sides of the jaws 7, as shown by dotted lines at 19, in Fig. 2, and these ends
and heads of the side arms or plates are provided with transverse bores or
passages 20, through which the bolt 10 passes.
The head of the yoke 15, consists of inwardly directed tubular extensions 21,
formed on the side arms or plates 17, through which the bolt 22, is passed, and
mounted on said bolt 22, between said inwardly directed tubular extensions 21 is
a tubular sleeve which preferably consists of two sections 23 each of which is
provided at its inner end with a projecting plate 24, and said plates project side
by side, and provide means for connecting the chain 14, with the yoke.
It will be apparent that the separate sections 23 of the sleeve which is mounted
on the bolt 22, may be formed integrally if desired, and in this event, the
plates 24, will consist simply of an annular projection formed on said sleeve.
The chain 14, consists of two forms of links, a plan and side view of one of
which is given in Fig. 5, and a plan and side view of the other in Fig. 6, the
link 25, shown in Fig. 5, constitutes the hinged link, and the link 26, shown in
Fig. 6, the side link of the chain, and these links are connected and held in the
manner of an ordinary drive chain.
The side links 26, are composed of two separate similar pieces 27. and each of
these is provided on its inner surface with inwardly directed cylindrical shoulders
or projections 28, which pass through transverse holes or openings 29, in the
central link 25, and the pivot pins 30, by which the links are connected, pass
through these cylindrical shoulders or projections 28.
The pivot pins 30, may be headed or riveted in any desired manner, and the
side links of the chain for a predetermined distance from the free end thereof,
are provided with cylindrical lugs or projections 31, on their opposite sides, which
are in line with the cylindrical lugs or projections 28, on their inner sides, and
which are larger than said lugs or projections 28, and the pivot pins 30, are
lengthened so as to extend through said cylindrical lugs or projections 31.
In Fig. 4, only one of the side links is shown as provided with these cylindrical
lugs or projections 31, but only a part of the chain is shown in this figure, and
it will be seen, on reference to Figs. 1 and 2, that about two-thirds of the chain
is thus provided, and the operation will be readily understood from the foregoing
description when taken in connection with the accompanying drawing, and the
following statement thereof.
In practice the chain is passed around the pipe as shown in Figs. 1 and 2, and
the free end thereof, is passed between the side arms or plates 17, of the yoke 15,
as is clearly shown in said figure, and then by moving the handle bar back and
forth, the sprockets or projections 13, on the jaws 7 of the head 6 will engage
with the cylindrical lugs or projections 31, on each side of the chain, and said
chain may be thus drawn through the yoke and caused to firmly grasp and hold
the pipe.
As hereinbefore stated, the pivot pins 30 of the chain may be riveted or other-
wise secured in place, but the ends of said pins which pass through the cylindrical
lugs or projections 21 on the free end of the chain should be flush with said lugs
or projections as is shown in Fig. 4, in order that they will not interfere with the
passage of the chain between the jaws 7, as herein before described.
It will thus be seen that I accomplish the object of my invention, by means
of a device which is simple in construction and operation, and one which is well
adapted to accomplish the result for which it is intended, and it is evident that
changes in, and modifications of the construction herein described may be made
without departing from the spirit of my invention or sacrificing its advantages.
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:-
1. The herein described wrench, comprising a handle provided with a head

page_text: having side jaws which project at the end thereof, and in line with the handle,
said side jaws being circular or segmental in form at their outer ends and pro-
vided at their inner sides adjacent to said outer ends with sprockets or teeth, and
a chain, provided at one end with a yoke, between the sides of which the head
of the handle is pivoted, the free end of said chain being adapted to be passed
through said yoke and between the jaws of the head, and the links of the chain
being provided with lugs or projections which are also adapted to pass through
said yoke, and with which said sprockets or teeth on the jaws of the head of the
handle are adapted to engage, substantially as shown and described.
2. A wrench, comprising a handle provided at one end with a head, having
side jaws which project therefrom, and which are provided with sprockets or teeth
on their inner sides which are arranged in the form of a segment, and a chain
provided at one end with a yoke, to the cross head of which said chain is con-
nected, and between the sides of which the head of the handle is pivoted, the
free end of the chain being adapted to be passed through said yoke, and between
the jaws of the head of the handle and the links of the chain being provided with
lugs or projections in connection with which said sprockets or teeth are adapted
to engage, substantially as shown and described.
14 ,
1
100%
WHEATLEY & MACKENZIE,
40, Chancery Lane, London, W.C., Agents.
WHEATLEY & MACKENZIE,
40, Chancery Lane, London, W.C., Agents.