An Improved Method for Connecting Service or Branch Pipes to Thin Metallic Main Pipes.
Year: 1887

page_text: Date of Application, 10th Sept., 1887
Complete Left, 22nd Oct., 1887
Complete Accepted, 22nd Nov., 1887
An Improved Method for Connecting Service or 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
for "AN IMPROVED METHOD FOR CONNECTING SERVICE OR BRANCH PIPES TO THIN
METALLIC MAIN PIPES to be as follows:-
دو
This Invention which relates to an improved method for connecting service or branch
pipes to main pipes, has for its object to make a perfect service connection easily and
quickly on main pipes made of malleable iron steel or other metal, which are too thin
to receive the ordinary gas or screw thread for this purpose.
In accordance with the present invention, the hole in the main pipe intended for
the reception of the service or branch pipe is made or drilled with a slight taper, and
the end of the branch pipe fitted accurately into its seat by being tapered externally
to the same angle. A fixed or solid collar is provided on the branch pipe immediately
beyond the tapered part already referred to, or a simple jam-nut is screwed on to form
an equivalent shoulder, which rests upon a saddle piece, the central opening in the
same being of such a diameter as allows only the pipe proper to pass through.
The service branch 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, forcing
the tapered end of the branch pipe into its seat, and thereby forming a perfect joint.
Instead of the strap bolt and saddle piece, any other equivalent embracing or clasping
contrivance may be adopted.
It is preferred to make the piece of service pipe directly connected to the main, just
leaving sufficient length beyond the saddle to receive the ordinary screw threaded
thimble or coupling.
D. DRYSDALE AUSTIN,
101, St. Vincent Street, Glasgow,
Petitioner's Agent.

page_text: 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 an improved method for connecting service or branch
pipes to main pipes, has for its object to make a perfect service connection easily and
quickly on main pipes made of malleable iron, steel or other metal which are too thin
to receive the ordinary gas or screw thread for this purpose.
In accordance with the present Invention the hole in the main pipe intended for the
reception of the service or branch pipe is made or drilled with a slight taper, and the
end of the branch pipe fitted accurately into its seat by being tapered externally to
the same angle. A fixed or solid collar is provided on the branch pipe immediately
beyond the tapered part already referred to, or a simple jam-nut is screwed on to form
an equivalent shoulder which rests upon a saddle piece, the central opening in the
same being of such a diameter as allows only the pipe proper to pass through.
The service branch 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, forcing
the tapered end of the branch pipe into its seat, and thereby forming a perfect joint.
Instead of the strap bolt and saddle piece, any other equivalent embracing or clasping
contrivance may be adopted.
It is preferred to make the piece of service pipe directly connected to the main, just
of sufficient length beyond the saddle as will receive the ordinary screw threaded
thimble or coupling.
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, shews a plan of a main pipe to which a branch pipe is attached in accord-
ance with my present Invention. Figure 2, represents a transverse section of the
same, shewing the service or branch pipe provided with a fixed or solid collar.
Figure 3 being a longitudinal section of the service or branch pipe represented with a
loose collar or jam nut.
My present Improvement consists in drilling a conical hole in the main pipe A, and
tapering the end B, of the service or branch pipe externally to the same angle, so that
when inserted into the said conical hole the tapered end B, fits accurately into its
seat D. A fixed or solid collar E, is provided on the branch pipe C, immediately
beyond the tapered part B, already referred to, or a simple jam nut F, is screwed on
to form an equivalent shoulder, which rests upon a saddle G, the central opening in
the same being of such a diameter as allows only the pipe proper to pass through.

page_text: The service branch C, is secured to the main pipe A, by a strap bolt H, on screwing
up the nuts I of which, the saddle G is pressed against the beforementioned solid
collar E, or jam-nut F, forcing the tapered end B, of the branch pipe C, into its
seat D, and thereby forming a perfect joint.
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 hole in main pipe A, and tapered end B, of service or branch pipe C,
fitted accurately together and held in position by the clasping or embracing contrivance
substantially as hereinbefore described with reference to the annexed drawings.
Dated this 21st day of October 1887.
D. DRYSDALE AUSTIN,
Applicant's Agent.