Improvements in Jointing Metal Pipes.
Year: 1898

page_text: Date of Application, 19th Mar., 1898-Accepted, 14th May, 1898
COMPLETE SPECIFICATION.
Improvements in Jointing Metal Pipes.
I, ROBERT EWING, of 68, Victoria Street, Westminster, London, in the County
of London, England, Sanitary 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:-
My invention relates to improvements in jointing iron or other metal pipes,
particularly iron or other metal pipes which have an inner lining of soft metal
such as lead or tin, for the purpose of conveying sewage or water, or for the pro-
tection of electric cables or wires, or other purposes.
The object of my invention is to secure a simple, reliable and inexpensive joint
in such lined pipes.
My invention consists of putting together, end to end, two plain rectangular
butt-end, socketless metal pipes, lined with lead or other soft metallic material;
the lead lining being turned outwards over the butt-ends; and uniting by fusion
or brazing or otherwise the lead ends; projecting flush or nearly so with the
exterior side of the iron or other metallic outer pipe; afterwards slipping an iron
or other metallic collar or thimble, lined or unlined over the butt-ends to strengthen
and protect the joint so made; or the said lining of the iron or other metallic
pipes may be continued a short distance along the external side of each rectangular
butt-end, and the slip collar or thimble, lined or unlined, drawn over the externally
lined ends of the two contiguous pipes. The lead surfaces at the abutting ends of
the pipes in this case may or may not be united by fusion or brazing or otherwise;
but the joint is completed in this instance by caulking the lining between the slip
or thimble collar, and the external side of end of pipe.
In order that my invention may be the more readily understood reference is to
be had to the drawings accompanying this specification.
Fig. 1 is a longitudinal section of my improved joint, showing lead ends, A,
united and projecting flush, or nearly so with exterior side of butt-end of iron
pipe and an unlined iron collar or thimble B drawn over the inner lead joint,
and a continuous lining C, and an even and true interior at D, being obtained.
Fig. 2, is a longitudinal section of my improved joint showing the lead ends A
continued a short distance along the exterior side of butt end of iron pipe to E,
and the joint completed by caulking the lead lining at E, between the slip collar
or thimble B, and the external side of end of pipe, a continuous lining C, and an
even and true interior obtained at D.
Having now particularly described and ascertained the nature of my invention
and in what manner the same is to be performed I declare that what I claim is: ---
(1) In a metal pipe lined with lead or other metallic substance the ends of the
lining material A, continued and turned outwards over the retangular butt-ends
of the outer socketless metallic pipes; and a metallic slip collar or thimble, lined
or unlined, covering the united or soldered lead or lining ends, substantially as,
and for the purposes set forth in these specifications and drawings.

page_text: (2) In a metal pipe lined with lead or other metallic material the lining (),
turned over the rectangular abutting ends of the outer metal pipes, and continued
a short distance along the external side of end of outer metal pipes; and covered
by and caulked in a slip collar or thimble, lined or unlined, substantially as, and
for the purposes set forth in these specifications and drawings.
(3) The use of a slip collar or thimble in the jointing of metal pipes lined with
lead or other metallic material substantially as and for the purposes set forth in
the accompanying specifications and drawings.
Doted this Nineteenth day of March 1898.