IM- PROVEMENTS IN SURFACE CONDENSERS
Year: 1864

page_text: LETTERS PATENT to George Tomlinson Bousfield, of Loughborough
Park, Brixton, in the County of Surrey, for the Invention of "IM-
PROVEMENTS IN SURFACE CONDENSERS."-A communication from abroad
by William Judson, residing at New York, United States of America..
PROVISIONAL SPECIFICATION left by the said George Tomlinson Bousfield
at the Office of the Commissioners of Patents, with his Petition, on the
27th May 1864.
İ, GEORGE TOMLINSON BOUSFIELD, of Loughborough Park, Brixton, in the
County of Surrey, do hereby declare the nature of the Invention for "Im-
PROVEMENTS IN SURFACE CONDENSERS," to be as follows:-
This Invention has for its object improvements in surface condensers.
For these purposes the end plates of a condenser through which the ends of
the tubes pass are at their outer surfaces recessed or countersunk around each
of the holes, the diameter of the countersunk portion being greatest at the
outer surface of the plates. In each of these recesses a ring of packing; by
preference of vulcanized india-rubber, is placed, this ring embraces the
protruding end of the tube. In order that the ring of packing may be
forced into the recess in the plate around the tube, there is fixed at one end
of each tube a projecting collar, around the inner face of which a recess is
formed by the inner face being cút to an incline in such manner that the

page_text: diameter of the recess in the collar is greatest at its outer circumference;
hence when the end of a tube is drawn inwards towards the end plate of
the condenser, the ring of packing will be compressed between the fixed
collar and the plate, and such ring will enter the recesses formed respec-
tively in the plate and the collar. At the other end of each tube there is
a similar collar which slides on the end of the tube, and this end of the tube
has a male screw thread formed on it to receive a screw nut. On screwing
up the nut the two rings of packing will be similarly compressed into their
respective recesses in the plates through which the tube is passed, and
in this manner all the tubes are securely fixed in the plates at the ends of the
condenser.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said George Tomlinson Bousfield, in the Great Seal Patent
Office on the 26th November 1864.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, GEORGE
TOMLINSON BOUSFIELD, of Loughborough Park, Brixton, in the County of
Surrey, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-seventh day of May, in the year of our Lord
One thousand eight hundred and sixty-four, in the twenty-seventh year
of Her reign, did, for Herself, Her heirs and successors, give and grant
unto me, the said George Tomlinson Bousfield, Her special licence that
I, the said George Tomlinson Bousfield, my executors, administrators,
and assigns, or such others as I, the said George Tomlinson Bousfield,
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," a communication to me from abroad by William Judson, a person
resident at New York, United States of America, upon the condition
(amongst others) that I, the said George Tomlinson Bousfield, my exe-
cutors or administrators, by an instrument in writing under my, or their,
or one of their hands and seals, should particularly describe and ascertain
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

page_text: within six calendar months next and immediately after the date of the said
Letters Patent.
NOW KNOW YE, that I, the said George Tomlinson Bousfield, do hereby
declare the nature of the said Invention, and in what manner the same
is to be performed to be particularly described and ascertained in and by
the following statement thereof, reference being had to the Drawings hereunto
annexed, and to the figures and letters marked thereon, that is to say :-
. DESCRIPTION OF THE DRAWINGS.
Figure 1 shows parts of a longitudinal section, shewing the two ends of a
tube and the means of fixing the same into the end plates; Figure 2 shows
the end view where a screw nut is used, and Figure 3 shows the other end
view where a projecting undercut collar is fixed or formed on the end of the
tube, but if preferred a screw nut and undercut collar may be used at each
end.
a, a, are the two end plates, where recesses are formed around the holes,
through which the ends of the tubes 6 protrude. One end of each tube is
cut with a male screw thread to receive a screw nut; c and d is an undercut
collar which slides on the end of the tube b. The other end of each tube b
is by preference formed with or has fixed thereon a collar e with an under-
cut recess; f, f, are rings of flexible and elastic packing, by preference of
vulcanized india-rubber. By thus forming the collars and the end plates with
undercut recesses the rings of packing will act more advantageously in ren-
dering the ends of the tubes where they pass through the end plates more
securely fluid-tight than when like rings of packing have been heretofore used
on the ends of tubes when using other forms of recesses in the end plates and
in the parts which press the packing into recesses.
In witness whereof, I, the said George Tomlinson Bousfield, have here-
unto set my hand and seal, this Twenty-fifth day of November,
in the year of our Lord One thousand eight hundred and sixty-
four.