IMPROVEMENTS IN SURFACE CONDENSERS.
Year: 1862

page_text: LETTERS PATENT to Fraser Selby, of Surbiton, in the County of Surrey
Engineer, for the Invention of "IMPROVEMENTS IN SURFACE CONDENSERS.
Sealed the 23rd January 1863, and dated the 28th July 1862.
PROVISIONAL SPECIFICATION left by the said Fraser Selby at the
Office of the Commissioners of. Patents, with his Petition, on the
28th July 1862.
I, FRASER SELBY, of Surbiton, in the County of Surrey, Engineer, do hereby
declare the nature of the said Invention for "IMPROVEMENTS IN SURFACE
CONDENSERS," to be as follows:-
I construct a series of coiled pipes, each coil of small diameter, through which
the steam is made to pass. I fix each coiled pipe in a separate tube or.
chamber suppied with a flow of water, so that every coil is surrounded by a
distinct supply of water passing continually through the tube or chamber in
which it is fixed. Each coil is connected at the inlet end to the exhaust pipe
or chamber, common toa series of them, anda similar provision is made at the
opposite end to carry off the water condensed from the steain. The supply and
overflow of the circulating water are provided for in a similar manner.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Fraser Selby in the Great Seal Patent Office on the 28th
January 1863.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, FRASER
SELBY, of Surbiton, in the County of Surrey, send greeting..
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-eighth day of July, in the year of our
Lord One thousand eight hundred and sixty-two, in the twenty-sixth year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto
me, the said Fraser Selby, Her special licence that I, the said Fraser Selby,
my executors, administrators, and assigns, or such others as I, the said Fraser
Selby, my executors, administrators, and assigns, should at any time agree with,
and no others, from time to time and at all times thereafter during the
term therein expressed, should and lawfully might make, use, exercise, and
vend, within the United Kingdom of Great Britain and Ireland, the Channel
Islands, and Isle of Man, an Invention for "IMPROVEMENTS IN SURFACE
CONDENSERS," upon the condition (amongst others) that I, the said Fraser
Selby, my executors or administrators, by an instrument in writing under my,
or their, or one of their hands and seals, should particularly describe and ascer-
tain the nature of the said Invention, and in what manner the same was to be
performed, and cause the same to be filed in the Great Seal Patent Office
within six calendar months next and immediately after the date of the said
Letters Patent.
NOW KNOW YE, that I, the said Fraser Selby, do hereby declare the
nature of my said Invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement thereof, reference being had to the Drawings hereunto aunexed,
that is to say:-
My Invention consists in constructing surface condensers of a series of cham-
bers, cases, or tubes, each containing within it a coil or coils arranged in such
a manner that the steam may pass inside the coil or coils, and a separate
stream of water entering each chamber, case, or tube (in which a coil or coils
are fixed) to condense the steam. The coils may be made either of parallel or
taper tubing, and the coils themselves may be made either parallel or conical.
They may be placed round each other by having each successive coil of larger
diameter, or they may be coiled together encircling each other, or in any other
convenient manner. For small engines one coil and chamber will be sufficient,

page_text: DESCRIPTION OF THE DRAWINGS.
Figure 1 is an elevation, partly in section, of one of my improved surface
condensers composed of one coil fixed in a chamber or tube; Figure 2 is a
plan of the same; Figure 3 is a sectional elevation of one of my condensers
with two coils, one being round or encircling the other, placed in the same
chamber; Figures 9 and 10 shew, in elevation and plan, three coils arranged
for being inserted in one chamber the number of coils may however be varied;
Figure 4 isa plan of Figure 3; Figure 5 shews an arrangement for connecting
coils together; Figure 6 is an end view, Figure 7 an elevation, and Figure 8 a
plan shewing an arrangement of a series of chambers or tubes each containing
one coil, as shewn at Figure 1.
The letters indicating corresponding parts are as follows. Similar letters
refer to similar parts in all the Figures.
A, A, are the chambers or tubes in which the coils are enclosed; B is a a
bolt or tube for securing the ends 1), D, of the chambers; C, C, are the coils;
S, S', and W, W', are chests used when there is a series of chambers A, as
shewn at Figures 6, 7, and 8. Although the chambers A are shewn cylindrical,
they may be of any other form desired; they may also be employed as
framing of engines. The action of the condenser is as follows:-If for a
small engine only one chamber and one coil are necessary, as represented at
Figure 1, the exhaust steam from the engine may enter direct into the coil C
wherein it will be condensed, and the resulting water drawn out from the
bottom end of the coil. The cooling water enters the chamber A through the
pipe w, and overflows or is drawn or forced out through the pipe w', or vice
versa. In Figure 3 the exhaust steam enters the pipe s, into a chamber S"
thence into the coils C,C,and, when condeused, flows or is drawn out from the
bottom of the coils. The cooling water enters the chamber A,as before described
with reference to Figure 1. When series of these chambers containing a coil
or coils are used, as shewn at Figures 6, 7, and 8, the exhaust steam from the
engine enters through the pipe s into the chamber or chest S, thence into the
coil or coils, where it is condensed, and flows or is forced or drawn into the chest
or chamber S',and issues through the pipe s'. The cooling water enters through
the pipe w and chest W into the chambers A, A, A, and is ultimately drawn,
forced, or overflows into the chest W1, passing out through the pipe w¹.
Although only water has been mentioned in the description as a means

page_text: of cooling or condensing, yet any other medium may be employed if preferred,
and the condensers may be used in refrigerating, distilling, and in all cases
where air, steam, or gaseous fluids require condensation.
And having now described the nature of my said Invention, and in what
manner thesame is to be performed, 1 declare that I claim, constructing surface
condensers of coiled pipes enclosed in cylinders, tubes, or other like vessels,
through which the vapour or auriform body and the cooling or condensing
liquid are made to pass, substantially in manner herein-before described.
In witness whereof, I, the said Fraser Selby, have hereunto set my
hand and seal, this Twenty-eighth day of January,One thousand eight
hundred and sixty-three.
FRASER SELBY. (L.S.)