Improvements in Surface Condensers.
Year: 1896

page_text: PROVISIONAL SPECIFICATION.
Improvements in Surface Condensers.
I, JOSEPH POGSON, of the Corporation Tramway Depot, Huddersfield, in the
County of York, Engineer, do hereby declare the nature of this invention to be..
as follows:-
This invention relates to that class of condensers suitable for tramway engines,
and has for its object the construction of the tube plate boxes so as to facilitate the
examination of the condensing tube ends, and to secure the condensing tubes to the
tube plates in a more substantial manner without the aid of solder, and in such a
way that, when a tube joint is defective, the tube may be more readily withdrawn
and
replaced by a new tube or temporarily repaired by a plug, than is the case
with tube plate boxes constructed in the manner as hitherto."
In carrying out my invention I form the tube plate boxes in sections bolted
together, each section is bored for the reception of the condensing tubes, the ends"
of which are inserted in the holes of the tube plates and expanded to a steam tight
joint, the tubes being further secured in the respective holes by the insertion of
taper ferrules.
Each tube plate box is covered by a lid bolted thereto and opposite to each
condensing tube a hole is bored and threaded, into which a screwed plug is
inserted.
"
Should the end of a condensing tube begin to leak, on withdrawing the plug
opposite to the tube, the end of the latter may be examined and further expanded,
or the ferrule withdrawn and a new tube inserted without having to break the-
joint of the cover plate and remove same from the tube box before the condition!
of the tube end could be ascertained.
1 ... 1906
:
I, JOSEPH POGSON, of the Corporation Tramway Depôt, Huddersfield, in the-
County of York, 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:-
This invention relates to that class of condensers suitable for tramway engines,.
and has for its object, the construction of the tube plate boxes so as to facilitate
the examination of the condensing tube ends, and to secure the condensing tubes to
the tube plates in a more substantial manner without the aid of solder, and in such
a way that, when a tube joint is defective, the tube may be more readily withdrawn
and replaced by a new tube, or temporarily repaired by a plug, than is the case-

page_text: with tube plate boxes constructed, and the tubes attached, in the manner as
hitherto.
In describing my invention in detail, reference is made to the accompanying
drawings in which
Fig. 1 represents an end view of portions of two sections of a tube plate box
constructed according to my invention.
Fig. 2 is a section through the condensing tubes, and
Fig. 3 is a cross section on line a. b. through the tube plate box drawn to a
larger scale.
In carrying out my invention I form the tube plate boxes A. in sections flanged
and bolted together at B, each section is bored for the reception of the condensing
tubes C. the ends of which are inserted in the holes of the respective tube plate
boxes, one box A. at each end of the condensing tubes C, the ends of the said tubes
are expanded to form a steam tight joint between the tubes C. and plate boxes A.
in any convenient manner, the condensing tubes C. being further secured in the
respective holes in the tube plate boxes A. by the insertion of taper ferrules E.
driven into the expanded ends of the condensing tubes C.
Each tube plate box A. is covered by a lid which may form part of the box as
shown or be bolted thereto in any convenient manner and opposite to each
condensing tube C. a hole is formed in the lid and threaded, into which a screwed
plug F. is inserted, the plug by preference having a square hole G. formned therein
for the purpose of screwing the plug into or from the threaded hole.
The condenser may be made of aluminium or other suitable metal, and should
the end of a condensing tube C. begin to leak at the junction of same with the tube
plate box A, the interior may be examined on the withdrawal of the screwed plug F.
opposite the end of the tube, the end of the latter may then be further expanded,
or by removing the screwed plugs F. opposite to each end of the leaking or damaged
condensing tube C, the same may be temporarily repaired by driving a plug into
each end of the tube, or the tube may be removed and replaced by a new one,
without having to break the joints B. between the sections of the tube plate boxes,
or removing the lid should the box A. be prepared for a lid and bolted thereto,
before the condition of the tube end could be ascertained or a new tube inserted.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is,
A surface condenser in which are combined tube boxes A, condensing tubes C,
ferrules D. and screwed plugs F, all arranged substantially in the manner as shown
and for the purpose as hereinbefore set forth.
Dated this 17th day of December 1896
JOHN WAUGH,
Agent.