Improvements in Steam Sterilizing Apparatus.
Year: 1896

page_text: Date of Application, 21st May, 1896
Complete Specification Left, 22nd Feb., 1897-Accepted, 24th Apr., 1897
PROVISIONAL OF MOLTIVATION.
Improvements in Steam Sterilizing Apparatus.
I SHERIDAN DELÉPINE M.B., B.S. Professor of Pathology at the Owens
College, Manchester in the County of Lancashire, do hereby declare the nature
of this invention to be as follows:-
It is often desirable to submit articles of clothing, sheets, blankets and the like
to the action of a current of saturated steam. This is more especially the case
when such objects have to be thoroughly disinfected.
My invention has for its object to provide a cheap, portable and very simple
apparatus in which steam is generated (under slight pressure so as to ensure a
temperature of 100° C.) in large quantity in order to produce a powerful current
very rapidly thus preventing unnecessary waste of time.
Moreover the apparatus may be so constructed that after the objects have been
submitted to the action of steam for a sufficient length of time, the steain may
he diverted, the steaming chamber opened and the objects still submitted to the
action of a temperature of 100° C. to cause complete evaporation of the water
which has condensed in the articles submitted to the action of steam.
The apparatus consists of a steaming chamber closed at top by a lid. provided
with a valve which blows off when the steam is at a pressure of 2 lbs. or more
to the square inch.
Into the said steam chamber, I admit steam all round near the bottom and this
steam enters through an annular opening.
The steam is generated in the chamber left between the bottom of the boiler
and the false bottom, round which the steam is admitted into the steaming or
sterilising chamber. To prevent splashing and passage of water from the boiler
into the steaming chamber, an annular diaphragm is interposed between the false
bottom and the surface of the water. There is a jacket round the steriliser and
there is a communication between the boiler and this jacket, through an annular
space between the bottom of the boiler and the inner wall of the outer jacket.
Or into the said chamber, I admit steam all round near the bottom, and this
steam enters through an annula: opening, into which the steam is admitted by
a tap, which connects said inner jacket with an outer one. This outer jacket
opens directly into a boiler formed between the bottom of the steaming chamber,
and the bottom of the apparatus.
When steam is generated in the boiler, it forces the water into the outer
jacket, before it can escape into the air, and this can be insured by weighting
the valve in the lid accordingly. This occasions a slight rise in the boiling point,
and the steam escaping through the water in the outer jacket keeps this water
also at a temperature of at least 100 degrees Centigrade.
When it is desired to use the chamber for drying purposes, the steam is
prevented from passing into the inner chamber and escapes through a pipe fixed
near the top of the apparatus, and communicating with the jacket only; the
steam could not previously escape through this opening, which is guarded by a
valve which blows off when the pressure is over that at which the valve in the
id blows off.
Dated this Tronts first day of Mar 1996
,BROWNE & Co.,
Agents for the Applicant.

page_text: I SHERIDAN DELÉPINE, M.B., B.S. Professor of Pathology at the Owens
College, Manchester in the County of Lancashire, 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 :-
It is often desirable to submit articles of clothing, sheets, blankets and the like
to the action of a current of saturated steam. This is more especially the case
when such objects have to be thoroughly disinfected.
My invention has for its object to provide a cheap portable and very simple
apparatus in which steam is generated (under slight pressure so as to insure a
temperature of 100° C.) in large quantity in order to produce a powerful current
very rapidly thus preventing unnecessary waste of time.
Moreover the apparatus may be so constructed that after the objects have been
submitted to the action of steam for a sufficient length of time, the steam may be
diverted, the steaming chamber opened and the objects still submitted to the action
of a temperature of 100° C. to cause complete evaporation of the water which has
condensed in the articles submitted to the action of steam.
The apparatus consists of a steaming chamber closed at the top by a lid provided
with a valve which blows off when the steam is at a pressure of 2 lbs. or more to
the square inch. Into the said steam chamber, I admit steam all round near the
bottom and this steam enters through an annular opening.
The steam is generated in the chamber left between the bottom of the boiler aud
the false bottom, round which the steam is admitted into the steaming or sterilizing
chamber.
To prevent splashing and passage of water from the boiler into the steaming
chamber, an annular diaphragm is interposed between the false bottom and the
surface of the water. There is a jacket round the sterilizer and there is a com-
munication between the boiler and this jacket, through an annular space between
the bottom of the steaming chamber and the bottom of the boiler and the inner
wall, of the outer jacket.
Or into the said chamber, I admit steam all round near the bottom, and this
steam enters through an annular opening into which the steam is admitted by a tap,
which connects the said inner jacket with an outer one. This outer jacket opens
directly into a boiler formed between the bottom of the apparatus.
When the steam is generated in the boiler, it forces the water into the outer
jacket before it can escape into the air. This can be insured by weighting the
valve in the lid accordingly. This occasions a slight rise in the boiling point, and
the steam escaping through the water in the outer jacket keeps this water also at a
temperature of at least 100° Centigrade.
When it is required to use the chamber for drying purposes, the steam is
prevented from passing into the inner chainber and escapes through a pipe fixed
near the top of the apparatus, and communicating with the jacket only; the steam
could not previously escape through this opening, which is guarded by a valve
which blows off when the pressure is over that at which the valve in the lid
'blows off.
And in order that my invention may be better understood I will now proceed to
describe the same with reference to the drawings accompanying this specification
in which
Fig. 1 is a section of sterilizer without drying arrangement.
Fig. 2 is sterilizer so constructed that it may be used also as a dryer.

page_text: With reference to Fig. 1 a shews sterilizing chamber, boiler, c first false bottom:
with hole d in centre, e second false bottom fixed to c by means of flange f, g small
holes in flange f to allow steam to pass from b to a.
The aggregate surface of all the holes g is smaller than the sectional surface of
outlet h. i shows valve guarding outlet h to blow off at about two lbs. to the
square inch. k jacket into which boiling water is driven when pressure of steam.
rises in boiler b. 1 outlet to jacket k provided with suitable valve m. w clamp, of
which there are a number for securing the cover y.
With reference to Fig. 2, n shews sterilizing chamber becoming drying chamber
when tap is turned off, disconnecting the chamber and boiler o. p inner jacket..
9 outer jacket communicating freely with boiler o.
Steam and water are forced into jacket g when pressure rises in boiler o..
r shews water gauge. s outlet for steam coming directly from outer jacket q.
t valve to same. u outlet for steam coming from chamber n. v valve to same.
The arrows indicate currents of steam.
The boiler may be heated by any suitable means such as by a stove placed
underneath same.
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 improved apparatus constructed substantially as and for the purposes set.
forth.
Dated this 22nd day of February 1897.
BROWNE & CO.,
Agents for the Applicant.