Improvements in Disinfecting Apparatus.
Year: 1892

page_text: Date of Application, 24th Nov., 1892
Complete Specification Left, 24th Aug., 1893-Accepted, 30th Sept., 1893
PROVISIONAL SPECIFICATION.
Improvements in Disinfecting Apparatus. .
I WILLIAM LITLER BRADFORD of The Crescent Iron Works Salford in the
County of Lancaster Laundry Engineer, do hereby declare the nature of this
invention to be as follows:-
This invention relates to improvements in that class of disinfecting apparatus
wherein steam is used as the disinfecting medium, and more especially to those
using a steam current at a low pressure. The improvement consists principally in
the combination of a steam boiler and a jacketted disinfecting chamber situated
above the same, the products of combustion of, which boiler are carried under the
jacket of the disinfecting chamber for the purpose of drying and superheating the
steam in the said jacket.
The advantage of this combination over such apparatus as are at present in use
and which utilise the lower portion of the "jacket as the steam boiler being:-
That only the requisite amount of steam is generated in the boiler itself and the
steam is then dried and superheated in the lower part of the jacket by the heat
from the flues above referred to instead of, as in other apparatus an unnecessarily
large amount of steam being generated partially charged with water by the large
surface of the "jacket boiler" and which use of the jacket as a boiler or steam
generator also prevents its use as a drier and superheater.
I propose to make the boiler in a simple cylindrical or other form affording the
greatest facilities for cleaning the sediment out of the same, which facility cannot
be obtained in the cramped surface of the "jacket boiler" and which facilities for
cleaning are so important in an atmospheric boiler.
The upper part of the steam boiler is connected directly with the jacket through
which latter the steam passes and enters the disinfecting chamber at the top
escaping from the latter at the bottom and thus ensuring a higher temperature in
the jacket than in the chamber and also by passing downwards through the chamber
ensuring uniformity of temperature in the latter.
The boiler is fed automatically with water by a ball cistern fixed at the side.
For drying purposes the jacket is provided with a valve whereby the steam can
be allowed to escape into a flue instead of entering into the chamber.
Dated this 23rd day of November 1892.
GEO. DAVIES & SON,
4, St. Ann's Square, Manchester, Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Disinfecting Apparatus.
I WILLIAM LITLER BRADFORD of The Crescent Iron Works Salford in the
County of Lancaster, Laundry 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 improvements in that class of disinfecting apparatus
wherein steam is used as the disinfecting medium, and more especially to those
using a steam current at a low pressure.
The nature of my said invention and the manner in which the same is to be
performed or carried into practical effect will be readily understood on reference
to the annexed sheet of drawings and the following explanation thereof.
Fig. 1 on the drawing is a vertical section of a disinfecting apparatus constructed

page_text: according to my invention and Fig. 2 a plan view thereof on a much smaller scale
showing the position of the inlet and outlet doors and the general form of the
receptacle.
The improvement consists principally in the combination of a steam boiler a and
a disinfecting chamber surrounded (excepting on the inlet and outlet sides) with
a steam jacket c the said jacketted disinfecting chamber being situated as shown
above the boiler a the products of combustion from the furnace d of which are
carried under the bottom of the jacket c of the disinfecting chamber and passing
thence by a flue e to the chimney f, the said heated products of combustion after
heating the boiler thus serving for the purpose of drying and superheating the
steam in the said jacket c.
The advantage of this combination over such apparatus as are at present in use,
and which utilize the lower portion of the steam jacket itself as the steam boiler,
being that only the requisite amount of steam is generated in the boiler a itself,
and the steam is then dried and superheated in the lower part the jacket c by the
heat from the furnace d and flue e above referred to instead of, as in other
apparatus an unnecessarily large amount of steam being generated partially
charged with water by the large surface of the "jacketted boiler" and which.use
of the jacket as a boiler or steam generator also, prevents its use as a dryer and
superheater.
propose to make the boiler a in a simple cylindrical or other form affording the
greatest facilities for cleaning the sediment out of the same, which facility cannot
be obtained in the cramped surface of the "jacket boiler" above referred to, and
which facilities for cleaning are so important in an atmospheric boiler.
The upper part of the steam boiler a is connected directly by a pipe g with the
lower part of the jacket c from the upper part of which the steam passes through
openings into the upper part of the disinfecting chamber bentering the latter at
the top and escaping therefrom through openings at the bottom into a pipe k
leading to the chimney, and thus insuring a higher temperature in the jacket c than
in the chamber and also by passing downwards through the chamber ensuring
aniformity of temperature in the latter.
The boiler a is fed automatically with water by a ball-cistern fixed at
the side.
For drying purposes the jacket e is provided with a flap or other valve in the
box m at the top whereby the steam can be allowed to escape direct into the flue or
chimney instead of passing through the chamber b.
As seen at Fig. 2 the inlet and outlet doors are on opposite sides and the steam
jacket c only passes up the front back of the chamber b.
The doors are not required to be steam tight nor the apparatus to be fitted with
steam gauges or safety valves as nothing but a current of dry low pressure steam is
employed.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
The combination with a low pressure steam boiler of a steam jacketted disinfecting
chamber placed above the same, and so arranged that the steam from the boiler
passes through the steam jacket and thence through the disinfecting chamber to
the chimney or outlet, and that the products of combustion of the boiler furnace act
directly upon the bottom of the steam jacket substantially as hereinbefore described
and illustrated by. the drawings annexed.
GEO. DAVIES & SON,
4, St. Ann's Square, Manchester, Agents for the Applicant.