IM- PROVEMENTS IN STEAM BOILERS
Year: 1876

page_text: LETTERS PATENT to Edward Primerose Howard Vaughan, F.C.S., of 67, Chancery
Lane, in the County of Middlesex, Patent Agent, for the Invention of "IM-
PROVEMENTS IN STEAM BOILERS." A communication from abroad by Jean
Marie Félix du Temple, of Paris, in the Republic of France.
Sealed the 16th September 1876, and dated the 12th May 1876.
PROVISIONAL SPECIFICATION left by the said Edward Primerose Howard
Vaughan at the Office of the Commissioners of Patents on the 12th May 1876.
EDWARD PRIMEROSE HOWARD VAUGHAN, F.C.S., of 67, Chancery Lane, in the
"IMPROVEMENTS IN STEAM BOILERS."
County of Middlesex, Patent Agent.
communication from abroad by Jean Marie Félix du Temple, of Paris, in the
Republic of France.
A
This Invention relates to improvements introduced into the construction of steam
boilers with a view to increase the generating power of such boilers while reducing
their bulk, weight, and cost.
Figures 1, 2, of the accompanying Drawing are side and end views of a boiler
constructed according to this Invention.
In these Figures a is a cylindrical reservoir in communication with the feed pump,
and having a section at least equal to the sum of the sections of the vaporising
tubes b, b, b. The latter are set close to each other throughout the length of the
feed cylinder a to which they are tapped, and from which they ascend in spirals or
This reservoir c
zig-zags into the upper reservoir or steam and water chamber c.
may be of a cylindrical, elliptical, or lenticular form, and its length should be at
least equal to that of the lower or feed reservoir a. d, d, are two pipes, having
cach a section at least equal to half the combined sections of the vaporising tubes
b, b, b. These pipes communicate on one hand with the lower reservoir a, and on
the other with the upper reservoir c. As seen in the Drawing, the two reservoirs
a and c, as also their connecting pipes d, d, are set beyond range of the furnace fire
f, which acts only on the vaporising tubes b, b, b. The apparatus arranged as
above is charged with water to about half level of the upper reservoir c. The
steam generated in the vaporising tubes b, b, b, (which as above noted are alone
exposed to the action of the furnace) egressing in this reservoir forces the water
backwards through the connecting pipes d, d, into the lower reservoir a, from
Posice 71

page_text: whence it returns with the feed water into the tubes b, b, b, thus establishing and
maintaining a continuous circulation throughout the apparatus.
The form, dimensions, and general details of construction and arrangement of the
different parts of the boiler may be varied according to circumstances.
SPECIFICATION in pursuance of the conditions of the Lotters Patent filed by
the said Edward Primerose Howard Vaughan in the Great Seal Patent Oflice
on the 2nd November 1876.
EDWARD PRIMEROSE HOWARD VAUGHAN, F.C.S., of, 67, Chancery Lanc, in the
County of Middlesex, Patent Agent. "IMPROVEMENTS IN STEAM BOILERS." A
communication from abroad by Jean Marie Félix du Temple, of Paris, in the
Republic of France.
This Invention relates to improvements introduced into the construction of steam
boilers with a view to increase the generating power of such boilers while reducing
their bulk, weight, and cost.
Figures 1, 2, of the accompanying Drawings are side and end views of a boiler
constructed according to this Invention.
In these Figures a is a cylindrical reservoir in communication with the feed pump,
and having a section at least equal to the sum of the sections of the vaporising
tubes b, b, b. The latter are set close to each other throughout the length of the
feed cylinder a to which they are tapped and from which they ascend in spirals or
zig-zags into the upper reservoir or steam and water chamber c. This reservoir c
may be of a cylindrical, elliptical, or lenticular form, and its length should be at
least equal to that of the lower or feed reservoir a. d, d, are two pipes, having
each a section at least equal to half the combined sections of the vaporising tubes
b, b, b. These pipes communicate on one hand with the lower reservoir a, and on
the other with the upper reservoir c. As seen in the Drawings the reservoirs
a and c, as also their connecting pipes d, d, are set beyond range of the furnace fire
f, which acts only in the vaporising tubes b, b, b. The apparatus arranged as
above is charged with water to about half level of the upper reservoir c. The
steam generated in the vaporising tubes b, b, b, (which as above noted are alone
exposed to the action of the furnace) egressing in this reservoir forces the water
backwards through the connecting pipes d, d, into the lower reservoir «, from
whence it returns with the feed water into the tubes b, b, b, thus establishing and
maintaining a continuous circulation throughout the apparatus.
The form, dimensions, and general details of construction and arrangement of the
different parts of the boiler may be varied according to circuinstances.
Having now described and ascertained the nature of the said Invention, and the
nanner of carrying the same into effect, 1 declare that what I claim and desire to
protect by the herein-before in part recited Letters Patent is, the lower or feed
reservoir, and the upper or steam and water chamber c, directly connected by
pipes d, d, in combination with spiral or zig-zag vaporising tubes b, b, b, which
alone are exposed to the action of the furnace, the whole constructed and arranged
in manner and for the purpose substantially as herein set forth and shewn in the
Figures of the accompanying Drawings.
In witness whereof, I, the said Edward Primerose Howard Vaughan, have
hereto set my hand and seal, this Second day of November, in the year of
our Lord One thousand eight hundred and seventy-six.
E. P. H. VAUGHAN. (L.S.)