IMPROVEMENTS IN AND APPLICABLE to STEAM GENERATORS.
Year: 1879

page_text: LETTERS PATENT to George Allibon, of Liverpool, in the County of Lancaster,
Engineer, for the Invention of "IMPROVEMENTS IN AND APPLICABLE to STEAM
GENERATORS.
"
Sealed the 15th June 1880, and dated the 19th December 1879.
PROVISIONAL SPECIFICATION left by the said George Allibon at the Office
of the Commissioners of Patents on the 19th December 1879.
GEORGE ALLIBON, of Liverpool, in the County of Lancaster, Engineer.
"IMPROVEMENTS IN AND APPLICABLE TO STEAM GENERATORS."
The object of my Invention is to more uniformly beat than has been practicable
hitherto the water in steam generators, and as a result to avoid the unequal
expansion and contraction of the metal of the shell so hurtful to generators now
in use, and especially marine generators.
For that purpose I construct as part of or apply or fit to generators in the lower
part thereof a heater made usually tube like, and placed longitudinally. The said
heater, which is not open so as to allow water to enter, has one or several pipes
opening thereinto, and opening at its or their other end or ends in the steam space.
Steam, and steam only, is allowed to pervade the heater and pipes, and by con-
duction to heat the water surrounding them. Any water of condensation in the
heater is led to the hot well and used as feed, or is otherwise disposed of.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed by
the said George Allibon in the Great Seal Patent Office on the 19th June 1880.
GEORGE ALLIBON, of Liverpool, in the County of Lancaster, Engineer.
"IMPROVEMENTS IN AND APPLICABLE TO STEAM GENERATORS.".
The object of my Invention is to more uniformly heat than has been practicable
hitherto the water in steam generators, and as a result to avoid the unequal
expansion and contraction of the metal of the shell so hurtful to generators now in
use, and especially marino generators.
For that purpose I construct as part of or apply or fit to generators in the lower
part thereof a beater made usually tube like and placed longitudinally. The said
heater, which is not open so as to allow water to enter, has one or several pipes
opening thereinto, and opening at its or their other end or ends in the steam space.
Steam, and steam only, is allowed to pervade the heater and pipes, and by con-
duction to heat the water surrounding them. Any water of condensation in the
heater is led to the hot well and used as feed, or is otherwise disposed of.
Fig. 1 is a front view, and Fig. 2 a side view, both partly in section, of a pair
of double ended two flued marine generators constructed under my Invention.
a, generator shell; b, flucs; c, heater constructed of two cast iron tube like pieces
bolted together and supported on brackets above the bottom of the generator. The
said heater is disposed longitudinally along the bottom of the generator beneath
the space between the two flues b, 6, and has a pipe e leading upwards into the
steam spaco f; g, drain cock through which water accumulating to too great an
extent in the heater c is from time to time run off; h, pipe connecting the heaters
of the two generators i, i¹; j, pipe leading to the hot well through which the steam
as it condenses is led away; k, gauge glass and connections for showing if any
water is accumulating in the heater, and when it is necessary to run such water off
through the drain cock g.
Fig. 3 is a transverse, and Fig. 4 a longitudinal section of a double ended three
flued marine steam generator fitted with my said improvements. Here there are
two heaters c and c and two pipes e and e¹ leading to the steam space of the
generator, one such pipe for each heater. The two heaters are connected together
by the pipe h; j, pipe leading to the hot well; g, drain cock; k, gauge glass and
connections.
It will be evident the heaters may be constructed so as to be in communication
with the steam space through more than one pipe, and that the heater proper may
be constructed of a group of tubes or of other form.
Steam generators constructed and fitted under my said Invention have the
water therein maintained at a nearly uniform temperature throughout. Irregular
expansion and contraction of the shells is thereby prevented, and the life increased.
The following table made from data taken whilst getting up steam illustrates the
action of the said apparatus, and shows that the whole of the water in the generator
was practically uniformly heated :-

page_text: It should be stated that the generator was an ordinary marine boiler with two
flues, and the water used was salt water.
In steam generators injuriously affected by pitting my said apparatus will reduce
the pitting action by removing the attacking gases during the time of getting up
steam, and when a ship is in port.
Having now described and particularized the said Invention in such manner that
others will be enabled to carry my improvements into effect, I claim,-
First. Heating water below the flues of steam generators by the means and
appliances acting substantially as set forth.
Second. Constructing steam generators with heating apparatus, arranged and
acting substantially as set forth.
Third. Applying heaters to steam generators, substantially as set forth.
In witness whereof, I, the said George Allibon, have hereunto set my band
and seal, this (16) Sixteenth day of June, in the year of our Lord One
thousand eight hundred and eighty.
Witness,
J. T. KING.
G. ALLIBON. (L.S.)