Improvements in Hot Air and Vapour Baths.
Year: 1896

page_text: Date of Application, 28th Nov., 1896
Complete Specification Left, 10th Dec., 1896-Accepted, 30th Jan., 1897
I, JOHN BEVERIDGE THISTLETON, of 1 Old Quebec Street, Oxford Street, in
the County of Middlesex, Electrician, do hereby declare the nature of this
invention to be as follows:-
This invention relates to improvements in baths such as are described in the
Specification No. 11143 of 1891.
In order to economise and equalise the heat I construct the bath of two casings
with a space between, through which the products of combustion of the lamp or
burner are led.
The outside of the outer case is covered with non-conducting material such as
asbestos and the inside of the inner case is lined with asbestos cloth or the like to
prevent the patient's limb from coming into contact with the hot metal, the cloth
being of an open texture to allow the heat to pass through. The space between
the casings may be divided into a number of passages, or be made in the form of
a coil.
I also mount the bath in such manner that it may be raised, lowered, turned, and
inclined in any desired manner. Preferably I do this by fixing to the under side of
the bath a semicircular rack working in a socket or bearing at the top of a vertical
column free to be raised, lowered, or turned in a tubular standard rising from the
foot or stand.
The socket is provided with a pawl to take into the ratchet teeth.
J. B. THISTLETON.
Improvements in Hot Air and Vapour Baths.
I, JOHN BEVERIDGE THISTLETON, of 1 Old Quebec Street, Oxford Street, in
the County of Middlesex, Electrician, 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 baths such as are described in the
Specification No. 11143 of 1891.
In order to economise and equalise the heat I construct the bath of two casings
with a space between, through which the products of combustion of the lamp or
burner are led.
The outside of the outer case is covered with non-conducting material such as
asbestos and the inside of the inner case is lined with asbestos cloth or the like to
prevent the patient's limb from coming into contact with the hot metal, the cloth
being of an open texture to allow the heat to pass through. The space between
the casings may be divided into a number of passages, or be made in the form of
a coil.

page_text: I also mount the bath in such manner that it may be raised, lowered, turned, and
inclined in any desired manner. Preferably I do this by fixing to the under side of
the bath a semi-circular rack working in a socket or bearing free to turn on the top
of a vertical column which can be raised or lowered, in a tubular standard rising
from the foot or stand.
The socket is provided with a pawl to take into the ratchet teeth.
The drawing shews a sectional elevation of an apparatus constructed according
to this invention.
a. is the outer casing covered with asbestos a' (or it might be with other
non conducting material) and b is the inner casing fixed at the right hand end
(which is open) to the end of the casing a. It is supported and steadied by rivets
and washers a and is lined with openwork asbestos fabric 6' held in place by
wires c. d is the lamp which may be rigidly fixed to the casing a as shewn, or it
may be connected to it by a ball and socket joint or the like, but this is not usually
necessary as the apparatus need never be tilted to any considerable extent. e is a
deflecting plate to spread the products of combustion. f is a chimney or opening
through which the products of combustion escape. g is a sleeve of flannel or like
material tied to the end of the casing a which is flanged for that purpose. h is a
semi circular rack fixed to the casing a and pivotted at in the forked head or
socket j on the top of the column k working in the standard 1. m is a thermometer
going into the inner cylinder.
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 :-
1. Baths of the class referred to having a double casing into which products of
combustion or other heated fluid can be introduced.
2. The combination with baths of the class referred to of a lining of openwork
fabric of asbestos or the like whereby the patient's limb is prevented from coming
into contact with the hot metal but through which the heat can pass.
3. Baths substantially as described and shewn in the drawing."
Deted this Oth day of December 1896
J. B. THISTLETON.