Branch Pipes to Thin Metallic Main Pipes.
Year: 1887

page_text: Date of Application, 14th Oct., 1887
Complete Left, 2nd Jan., 1888
Complete Accepted, 3rd Feb., 1888
Branch Pipes to Thin Metallic Main Pipes.
I, JOHN WOTHERSPOON of Clyde Tube Works, Coatbridge, in the County of
Lanark, North Britain, Iron Tube Manufacturer do hereby declare the nature of this
invention to be as follows:-
This Invention which relates to improvements in the means or method for con-
necting service or branch pipes to thin metallic main pipes consists as follows. A
conical screw threaded hole is made in the main pipe for the reception of the service
or branch pipe, the end of which is similarly tapered and screw threaded, so that it
can be screwed by means of a wrench into the main pipe. A fixed or solid collar is
provided on the branch pipe, a little beyond the tapered screwed part to form a
shoulder which rests upon a saddle piece, the central opening in the same being of
such a diameter as to allow the pipe proper to pass through.
The service pipe is secured to the main pipe by a strap bolt, on screwing up the nuts
of which the saddle piece is pressed against the beforementioned collar thus supporting
the branch pipe, and forming a suitable joint.
Instead of the strap bolt, and saddle piece any other equivalent embracing or
clasping contrivance may be adopted.
It will thus be seen that a suitable service connection can easily and quickly be
made on main pipes of malleable iron, steel or other metal.
Dated this 13th day of October 1887.
D. DRYSDALE AUSTIN,
101, St. Vincent Street, Glasgow,
Petitioner's Agent.

page_text: Branch Pipes to Thin Metallic Main Pipes.
I, JOHN WOTHERSPOON of Clyde Tube Works, Coatbridge, in the County of
Lanark, North Britain, Iron Tube Manufacturer 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 which relates to Improvements in the means or method for con-
necting service or branch pipes to thin metallic main pipes consists as follows. A
conical screw threaded hole is made in the main pipe for the reception of the service
or branch pipe, the end of which is similarly tapered and screw threaded, so that it
can be screwed by means of a wrench into the main pipe. A fixed or solid collar is
provided on the branch pipe a little beyond the tapered screwed part to form a
shoulder which bears against a saddle piece, the central opening in the same being of
such a diameter as to allow the pipe proper to pass through.
The service pipe is secured to the main pipe, by a strap bolt, on screwing up the
nuts of which the saddle piece is pressed against the before mentioned collar thus
supporting the branch pipe and forming a suitable joint.
Instead of the strap bolt and saddle piece any other equivalent embracing or
clasping contrivance may be adopted.
It will thus be seen that a suitable service connection can easily and quickly be
made on thin main pipes of malleable iron, steel, or other metal, the metal of which
could not support a connection by the screw alone.
In order that my said Invention may be properly understood and readily carried
into effect, I will now proceed to describe the drawings hereunto annexed.
Figure 1, is a transverse section of a main pipe to which a branch pipe is attached
in accordance with my present Invention.
Figure 2 is a plan of the same.
My present improvement consists in drilling and tapping, in the main pipe A, a
conical screw threaded hole, into which the similarly tapered and screwed end C, of
the service or branch pipe B, is screwed in the ordinary manner by means of a wrench.
A fixed or solid collar D, is provided on the branch pipe B, a little beyond the
tapered screwed part C, to form a shoulder which bears against a saddle piece E, with
a central opening of such a diameter as allows only the pipe B, proper to pass through
easily.
The service or branch pipe B, is further secured to the main pipe A, by means of a
strap bolt F, on screwing up the nuts G, of which the saddle piece E is pressed against
the beforementioned collar D, thus supporting the branch pipe B, and forming a
suitable joint.

page_text: 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
The conical screw-threaded hole in main pipe A, and tapered screw-threaded end C,
of service or branch pipe B, screwed together and held in position by the clasping or
embracing contrivance,-forming a combined screwed and gland supported joint,-
substantially as hereinbefore described.
D. DRYSDALE AUSTIN,
Applicant's Agent.