Improvements in Tools for Expanding the Ends of Pipes and the like.
Year: 1896

page_text: Con
ILEN
of Portland, in the County of Middlesex, and State of Connecticut, United
States of America, Plumbers.]
Improvements in Tools for Expanding the Ends of Pipes and the like.
I, HENRY HARRIS LAKE, of the Firm of Haseltine, Lake & Co., Patent Agents,
45 Southampton Buildings, in the County of Middlesex, do hereby declare the
nature of this invention to be as follows:-
This invention relates to an improvement in tools for expanding the ends of
lead pipes, and it consists of two corresponding semi-conical, partly hollow dies,
respectively pivoted forward of their longitudinal centres to the outer
The
ends of two levers pivoted together, and provided with handles.
said dies are connected with the handles, so that by pressing the handles
together, the said dies are separated, and whereby the end of a lead pipe may
be expanded for use in connection with pipe joints or soldering, in the usual
manner. Preferably the jaws are pivoted to the outer ends of the levers, and con-
nected to the handles of the opposite levers, whereby both ends of the dies are
positively moved. If desired a spring may be arranged between the handles,
tending to force them apart, and hence hold the dies close to each other.
Dated this 4th day of December 1896.
HASELTINE, LAKE & Co.,
45 Southampton Buildings, W.C., Agents for the Applicant.
Improvements in Tools for Expanding the Ends of Pipes and the like.
I, HENRY HARRIS LAKE, of the Firm of Haseltine, Lake & Co., Patent Agents,
45 Southampton Buildings, in the County af Middlesex, 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 an improved tool for expanding the ends of lead pipes

page_text: preparatory to coupling them, and particularly to their use in metal pipe-joints
of the general class to which the pipe-joint shown and described in British Patent
4894 of 1895 belongs. The object of the present invention is to produce a simple
compact, convenient and accurate tool for expanding the ends of lead pipes for the
general purposes described.
With these ends in view, the invention consists in a tool having certain details
of construction and combinations of parts as will be hereinafter described, and
pointed out in the claims.
In the accompanying drawing,
Figure 1 represents a view in side elevation of one form of the improved tool,
Figure 2 is a view thereof in longitudinal section.
Figure 3 is a detached broken view showing one of the dies and one of the levers
in inside elevation, and
Figure 4 is a view of the device in transverse section on the line ab of
Figure 2.
In carrying out the invention as herein shown, two corresponding semi-conical,
partially hollow dies A and A¹ are employed, respectively pivoted forward of their
longitudinal centres by means of pivots a, to the short outer ends B B of the
levers, having long handle ends B2 133, and pivoted together by means of. a pivot B
The semi-conical die A is provided at its rear end with an inwardly projecting,
slightly bowed hooked operating-rod A2, which passes freely through a transverse
hole b, formed in the outer end of the handle end B2, and hooks into a perforated
lug, formed at one edge of the inner face of the outer end of the handle-end B³
On the other hand the semi-conical die A' is provided with a corresponding
inwardly projecting, slightly bowed, hooked operating rod A passing freely
through a transverse hole 62 formed in the outer end of the handle-end B3, and
hooking into a perforated lug 3, formed at one edge of the inner face of the handle-
end B. These lugs are located upon opposite edges of the said handle-ends, as
shown in Fig. 4, so that the hooked ends will clear each other. A spiral spring C
interposed between the handle ends of the two levers, exerts a constant effort to
throw them apart, whereby the flat faces of the dies are brought into contact.
rods A2 and A3, it will be observed, are on the opposite side of the .fulcrum
pivot B from the pivots a a.
The
In using the device its semi-conical dies are inserted into the end of the pipe
to be expanded, after which the handle-ends of the levers are drawn together
against the tension of the spring, C, by closing the hand upon them. whereby the
dies are forced apart through the medium of their operating-rods A3 and A³. The
expansion of the pipe will not be done all at once probably, but by gradually
working the dies into it, and repeating the operation by separating them by
closing the hand upon the handle ends of the levers.
Having now articularly described and ascertained the nature of the said in-
vention and in what manner the same is to be performed, as communicated to me
by my foreign correspondent, I declare that what I claim is:
1. In a tool for expanding lead pipes, the combination with two corresponding
semi-conical dies, of two levers to which the said dies are respectively pivoted, and
means connecting the rear ends of the dies with the opposite levers respectively.
2. In a tool for expanding lead pipes, the combination with two corresponding
semi-conical dies, of two levers, to the short outer ends of which the said dies are
respectively pivoted, and two operating rods respectively projecting inward from
the inner ends of the dies, and connected with the handle-ends of the opposite
levers so that each die is connected with the short end of one lever, and the handle
end of the other lever at points opposite the fulcrum of the levers.
3. In a tool for expanding lead pipes, the combination with two corresponding
semi-conical dies, of two levers to the short ends of which the said dies are respec-
tively pivoted, and two operating rods respectively extending inward from the

page_text: inner ends of the dies, and passing through the handle-ends of the adjacent lev:3,
and connected with the said ends of the opposite levers.
Dated this 19th day of August 1897.
HASELTINE, LAKE & Co:,
45 Southampton Buildings, London, W.C., Agents for the Applicant.