Improved Apparatus for the Direct Extraction of Vitiated Air from Patients in Hospitals, Infirmaries, or like places.
Year: 1890

page_text: Date of Application, 20th Sept., 1890
Complete Specification Left, 20th June, 1891-Accepted, 1st Aug., 1891
PROVISIONAL SPECIFICATION.
Improved Apparatus for the Direct Extraction of Vitiated Air from
Patients in Hospitals, Infirmaries, or like places.
I, SIDNEY BARWISE of No. 51 Alexandra Road, Blackburn in the County of
Lancaster, Batchelor of Medicine, do hereby declare the nature of this invention
to be as follows:-
:-
This invention relates to improved apparatus and appliances employed for
extracting, and removing foul and vitiated air from the patients and beds of same
in such a manner that each separate bed. is practically isolated, making the invention
specially useful and advantageous in efectious diseases, hospitals, infirmaries, work-
houses and other like places where it is necessary to convey putrid emanation from
sick persons, infection from persons suffering from infectious diseases, and vitiated
air generally, directly to the outside so as not to contaminate the air supply of other
patients and the attendants.
According to this my said invention in the wall of the room and above the bed,
I form a hole communicating with the outside air, or with an exhaust ventilator,
this hole can be opened, and closed at will, and into same I fix one end of a
detachable shaft or tube bent to such a form that its opposite end is over the bed
and patient occupying same, and being bell or trumpet mouthed the vitiated air
arising from the patient is readily drawn and carried by way of the shaft to the
outside of the building.
When perfect isolation of a patient is necessary a canopy or screen of cotton or
other material which may be disenfected, is carried by the exhaust shaft above the
mouth of same and falling over and around the bed and patient the latter are
practically separated from the remainder of the room. The screen or canopy may
be open in one or more places to allow of a free access of fresh air, the foul air
being exhausted as described a more pure and healthy atmosphere than heretofore
can be maintained in a room or building in which are many patients.
Dated the 19th day of September 1890.
WALTER BRIERLEY,
Central Chambers, Halifax, Agent for the Applicant.
COMPLETE SPECIFICATION.
Improved Apparatus for the Direct Extraction of Vitiated Air from
Patients in Hospitals, Infirmaries, or like places.
I, SIDNEY BARWISE, of No. 51 Alexandra Road Blackburn, in the County of
Lancaster, Batchelor of Medicine, 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 improved apparatus and appliances employed for
extracting and removing foul and vitiated air from the patients and beds of same
in such a manner that each separate bed is practically isolated, making the invention
specially useful and advantageous in infectious diseases, hospitals, infirmaries, work-
houses, and other like places where it is necessary to convey putrid emanation from
sick persons, infection from persons suffering from infectious diseases, and vitiated
air generally, directly to the outside of the building, so as not to contaminate the
air supply of other patients and the attendants.
According to this my said invention, in the wall of the room, and above, or above
and below the bed, I form a hole communicating with the outside air, or with an

page_text: exhaust ventilator, this hole can be opened and closed at will, and into same I fix
one end of a detachable shaft or tube bent to such a form that its opposite end is
over or under the bed and patient occupying same, and being bell or trumpet
mouthed, the vitiated air arising from the patient is readily drawn and carried by
way of the shaft to the outside of the building.
When perfect isolation of a patient is necessary, a canopy or screen of cotton or
other material, which may be disinfected, is carried by the exhaust shaft above the
mouth of same, and falling over and around the bed and patient, the latter are
practically separated from the remainder of the room.
The screen or canopy may be open in one or more places to allow of a free access
of fresh air, the foul air being exhausted as described, a more pure and healthy
atmosphere than heretofore can be maintained in a room or building in which are
many patients.
Such being the nature and object of my said invention, the following is a
complete description of same, reference being made to the accompanying drawings,
in which
Fig. 1 is an outline section of a building or ward of an infirmary, shewing my
improved apparatus applied so as to exhaust and carry off foul or vitiated air
directly from patient and bed.
Fig. 2 is a plan view of same.
At 1 is a main exhaust pipe, the end or ends of which are connected with a fan,
a water spray, steam jet, chimney flue shaft, or other like means of drawing air
through the pipe 1. At 2 are a series of branch pipes connected with the pipe 1,
the open ends 3 of which are under the beds 4, or as shewn by dotted lines on Fig. 1,
may be above or over the bed. Each branch pipe 2 is provided with an internal
disc and a handle 5, by means of which any one or more of the branch pipes 2 may
be cut off when it is not required to exhaust from the whole of the beds, and for
purpose of exhausting at will from below or above the bed. The regulating discs
may be outside the building, or inside as at 5.
In some cases it will be advantageous to withdraw the vitiated air from above
the bed, in other cases from below or underneath the bed, and when perfect isolation
is desirable, a canopy or screen will be placed around the bed, so as to enclose both
bed and exhaust pipe inlet.
The vitiated air may be discharged from pipe 1 into the flue of a chimney or
furnace, and it is obvious the details may be varied according to circumstances and
surroundings so long as it is provided that the system of drawing and carrying off
foul and vitiated air from special localities, that is to say drawing off and carrying
away the foul air separately and directly from any one patient (so that contamina-
tion cannot pass to other patients) as distinguised from any plan for the general
ventilation of the ward, room, or building, as heretofore practised.
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 applied as and for purpose herein fully set forth and
illustrated by annexed drawings.