Partitioned Pipe and Process of Making the same.
Year: 1891

page_text: Date of Application, 22nd Sept., 1891-Accepted, 24th Oct., 1891
COMPLETE SPECIFICATION.
Partitioned Pipe and Process of Making the same.
A communication from abroad by THE HOGAN ENGINEERING COMPANY, a
Corporation organised under the Laws of the State of New York, and doing
business in the City, County, and State of New York, United States of
America.
I, JOHN CORRY FELL, of the firm of Fell and Wilding, of 1, Queen Victoria
Street, in the City of London, Patent Agent, 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 :-
The object of this invention is to furnish a cheap and strong pipe with partition
extended longitudinally through its bore, by which construction it is adapted to
convey two separate fluids, or to conduct gas and electric wires separately to their
destination.
In this invention, a blank of tee-shape is first formed with the lateral webs
nearly twice as wide as the transverse web, the lateral webs are then bent with
their edges adjacent to the edge of the transverse web, and are finally secured to
one another and the transverse web, by brazing, welding, soldering, or any other
suitable means.
The pipe may be made of round, square, corrugated or any other desired form
externally, and the edges of the lateral webs may be either scarfed or butted where
they are joined together.
The construction will be understood by reference to the annexed drawing, in
which
Fig. 1 is an end view of the tee-shaped blank;
Fig. 2 a view of the same looking toward the transverse web;
Fig. 3 an end view of a round pipe formed by scarfing the edges of the lateral
webs and securing them together upon the edge of the transverse web;
Fig. 4 is an end view of a similar pipe formed by butting the edges of the lateral
web together, and securing them upon the transverse web;
Fig. 5 is an end view of a partitioned pipe of square form externally; and
Fig. 6 is a perspective view of the completed pipe.
Figs. 7 and 8 are alternative constructions for the tee-shaped blank.
In Figs. 1 and 2, a is the transverse web, and b the lateral webs, each of which
is made of sufficient width to bend into a semi-circle, or other desired form, and
lap upon the edge of the web a. The edges of the web b may be scarfed and
overlapped as shown in Fig. 3, or they may be butted together as shown in Figs. 4
and 5.
The pipe may be made of metal adapted only for soft solder, or of copper, brass,
or other materials adapted for brazing. The pipe may also be made of iron, in
which case the transverse web a may be formed heavier, that is, thicker than the
webs b, to sustain the pressure required in welding the edges of the lateral webs
thereon, if required.
Such welding is preferably effected by heating the entire blank to a suitable
temperature, either before or after the lateral webs are bent in semi-circular shape,
and the blank, when thus heated, is passed through a die or between rolls adapted
to compress the edges of the lateral webs upon the transverse web to unite the
edges of the three webs securely together.
The operation of such rolls or dies is well known in the art, and the bending of
the webs to bring their edges in contiguity, may be effected by such rolls or dies
during the welding operation, or the lateral webs may be bent with their edges in
contact before they are heated. The lateral webs may be partially bent when the

page_text: blank is first formed, and thus adapted more readily for bending with their edges
in contiguity as shown in Fig. 7, where the lateral webs are partly curved for
subsequent shaping into a round pipe; and in Fig. 8 where the lateral webs are
shown inclined to the transverse web at an angle of 45 degrees, to facilitate their
formation into a square pipe like that shown in section in Fig. 5. The pipe c¹
when completed appears as shown in Fig. 6, with a solid partition connected rigidly
with its opposite sides extending lengthwise of the pipe, dividing its interior into
two longitudinal spaces.
By making one of the webs wider and the other narrower than they are shown
in Fig. 1, the partition may be located somewhat at one side of the centre if it be
desired to form unequal spaces within the pipe; but the process of bending the
lateral webs and securing them upon the transverse web, would be the same in such
case.
As the article which I have invented is dependent upon the method described
herein, the process and product are inseparable, and both are therefore claimed
herein.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1st. The process of making partitioned pipes, which consists in first forming a
blank of tee-section with the lateral webs wider than the transverse web, secondly,
bending the edges of the lateral webs over upon one edge of the transverse web,
and, thirdly, securing the edges of the lateral and transverse webs together,
substantially as hereiù set forth.
2nd. A partitioned pipe, consisting in a transverse web formed with two integral
lateral webs having their edges bent upon the edge of the transverse web and
secured thereto, substantially as set forth.
Dated this 22nd day of September 1891.
FELL & WILDING,
1, Queen Victoria Street, London, E.C., Agents for the Applicant.