An Improved Pipe Joint or Coupling.
Year: 1898

page_text: Date of Application, 20th Sept., 1898-Accepted, 29th Oct.. 1898
An Improved Pipe Joint or Coupling.
We, JAMES SEYMOUR CLINCH and JOHN SEYMOUR CLINCH, both of 18 and 20, Roe
Street, Liverpool, in the County of Lancaster, Hosiers, do hereby declare the nature
of this invention and in what manner the same is to performed, to be particularly
described and ascertained in and by the following statement:
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This invention has reference to the joining up, or coupling the ends of lengths of
tubes of soft metal, such as lead, tin, white metals, and other like metals; but it
is also applicable for use in connection with pipes of other metals, such as those of
copper, or equivalently soft, or semi-soft metal; and also with rubber, gutta percha,
and other hose, and in some cases, also hard metal pipes.
The object of the invention has been to provide a joint or coupling which shall
obviate the use of lead or solder joints, or brazed joints, as the case may be, and to
thereby diminish the cost usually attendant on the joining up of pipes, either in
new work, or in repairing pipes.
The invention will be described with reference to the accompanying drawings,
which illustrate a joint or coupling according to this invention joining up two ends
of two pipes lengths. In these drawings, Figure 1 is a sectional elevation, Figure 2
an outside elevation, and Figure 3 a cross section at A A Figure 1.
Referring to the drawings, a represents two lengths of pipe, and a¹ the ends to be
jointed together, 6 represents the body of the coupling device, through which, mainly,
the joint is effected, this coupling or body having on each side two annular
rings c and d. The rings care provided internally with a thread; and the outside
of the ring d is tapered or coned, and on it rests the inside surface of the end a¹ of
the pipes a; and the inside of the rings d being cylindrical and flush with the
interior of the body b, inaking a parallel way through the device.
Into the spaces between the rings c, and the ends a¹, there are introduced the
glands or annular wedges e, the external threads of which, screw into the threads in
the rings c, and the inner sides of which are inclined or coned equivalently to the
outside of the ring d.
In use,
the glands e are passed onto the pipes and then the ends a¹ are splayed
out to about the same inclination as the outside of the conical rings d. These
splayed ends a are then fitted on to the rings d; and then the glands e are screwed
into c, their internal tapered sides eventually coming onto the exterior of the splayed
out part a. They thus act as annular wedges, pressing very tightly onto the
cones d, and making by their wedging and compressing action, permanent water or
gas tight joints between the internal metal of the lead pipe ends, and the coupling
cones d.
In the case of lead or like pipes, the pressure on the ends a¹, caused by
the wedge glands, is to produce a lip of metal at the end of the gland and the end
of the rings d.
The example shewn in the drawings is a straight joint or coupling; it is, however,
to be understood that the coupling may be angular, say in the form of an elbow
joint, or bent to a curve; and it will, therefore, be clearly understood that the
invention is not restricted to the particular form of jointing or coupling shewn in the
drawings, but may be modified as to form and shape in several directions without
departing from its essential characteristics.

page_text: Having now particularly described and ascertained the nature of this inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is
1. A joint or coupling for pipes of the character specified, consisting of a device
having internal coned or tapered rings over which the expanded or tapered ends of
the pipes fit, annular internally threaded rings outside the aforesaid rings, and annular
wedges or glands adapted to screw into the external rings, the internal inclined part
of said wedges pressing upon the outside of the tapered pipe ends; substantially as
set forth.
2. The soft metal pipe joint or coupling particularly as shewn in and set forth
with reference to the drawings.