An Improved Joint for Connecting Condensers and other Tubes subjected to Internal or External Pressure.
Year: 1891

page_text: Date of Application, 14th Aug., 1991
Complete Specification Left, 6th May, 1892-Accepted, 11th June, 1892
PROVISIONAL SPECIFICATION.
An Improved Joint for Connecting Condensers and other Tubes
subjected to Internal or External Pressure.
I, WILLIAM SHARP, of No. 30 Heaton Avenue Heaton Road, Newcastle-
upon-Tyne, Engineer, do hereby declare the nature of this invention to be as
follows:-
―
My invention relates to an improved joint for connecting and repairing condensers
and other tubes subjected to internal or external pressure, the object of my said
invention being to use short lengths primarily, or to connect ruptured tubes and
render them fit for use.
In carrying out my invention I provide a screw thread of fine pitch upon each
end of the severed pipe or tube, and connect the two ends by means of a long
socket or sleeve properly screwed interiorly to suit the screwed ends. The external
diameter of said socket or sleeve may be arranged to pass through the ferrule kole
in either of the tube plates.
In the case of a hole, split, or leak I prefer to cut the faulty tube, so that the
ends may be effectively secured by means of the socket or sleeve before referred to.
Dated this 12th day of August 1891.
FREDK. WALKER,
11, Furnival Street, Holborn, London, E.C., Agent for the Applicant.
COMPLETE SPECIFICATION.
An Improved Joint for Connecting Condensers and other Tubes
subjected to Internal or External Pressure.
1, WILLIAM SHARP of No. 30 Heaton Avenue, Heaton Road, Newcastle-
upon-Tyne in the County of Northumberland 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 an improved joint for connecting and repairing condensers
and other tubes subjected to internal or external pressure, the object of my said
invention being to use short lengths primarily, or to connect ruptured tubes and
render them fit for use.
In order that my invention may be clearly understood I have appended the
accompanying sheet of drawings in which
Figure 1 is an elevational view of the improved joint, and Figure 2 a longitudinal
section of the same.
Figure 3 represents such joint as applied to a defective tube or tubes in a surface
condenser.
In carrying my invention into effect, I provide a screw thread of fine pitch upon
each end A A' Figures 1 and 2 of the severed pipe or tube, and I cause the ends to
be truly faced so as to abut fairly one against the other. I connect the two ends
thus prepared by means of a long screwed socket B, perfectly fitting the screwed
ends of A and A. In the case of the adaptation of my said invention to a surface
condenser in which the tubes are fitted to the tube plates by means of wood or
other expansive ferrules as shewn by Figure 3, I arrange the external diameter of
the socket B so that it may freely pass through the ferrule holes in the tube
plates CC, said tubes being afterwards fixed and rendered pressure tight in the
usual manner.
In the case of other methods of fixing the tubes within the tube
plates, the diameter of the socket B is always gauged so as to pass freely through

page_text: the holes in said plates. In order to make a true butt joint, and thus render a
ruptured or corroded tube again serviceable, I cut the damaged part out, and
truly face the ends by means of a face cutter, the mandrel of which fits or
approximately fits the bore of the tube, or by any other method or means whereby
the required true facing may be attained, and then cut the thread, arranging this so
that both ends may correspond when the socket B is screwed home to embrace
A and A' and form the pressure-tight butt joint a.
In this manner I am enabled to construct a surface condenser primarily without
using long lengths of tube, and practically dispensing with a central stay plate, or
tube carriers, or I am enabled to repair defective tubes in a short space of time and
render them effective.
Although I have described my said invention in connection with surface con-
densers as an instance of adaptation, I wish it to be understood that I do not
confine myself to said application, but may adapt said improved joint to any tubes
subjected to external or internal pressure.
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 :-
The improved joint for tubes subjected to external or internal pressure,
consisting in screwed ends A A', butt or faced joint a and screwed socket B,
substantially as herein described with reference to Figures 1 and 2 of the appended
drawings.
Dated this 21st day of April 1892.
FREDK. WALKER,
11, Furnival Street, London, E.C., Agent for the Applicant.