AN IMPROVED METHOD OF AND APPARATUS FOR PRODUCING ARTIFICIAL RESPIRATION
Year: 1885

page_text: I, WILLIAM ROBERT LAKE, of the firm of Haseltine, Lake, & Co, Patent Agents,
Southampton Buildings in the County of Middlesex do hereby declare the nature of
my invention for "AN IMPROVED METHOD OF AND APPARATUS FOR PRODUCING
ARTIFICIAL RESPIRATION to be as follows:-
23
This Invention relates to a method of, and means for, producing artificial
respiration.
The object of my improvement is to restore natural respiration when it has ceased
or become faint through accidental causes or from disease, and to provide for
effectively administering remedial agents or medicaments to the respiratory organs
when necessary, independently of any aid and without the volition of the patient.
My improvement consists partly in placing a patient in an air tight chamber in
any desired position and in alternately increasing and reducing the pressure of air
therein relatively to normal atmospheric pressure.
The improvement also partly consists in the combination with an air-tight
chamber suitable for accommodating a patient, of mechanism whereby the air within
the chamber may be alternately increased and reduced relatively to normal atmos-
pheric pressure.
HASELTINE, LAKE & Co.,
For the Applicant.

page_text: An Improved Method of and Apparatus for Producing Artificial
Respiration.
I, WILLIAM ROBERT LAKE, of the firm of Haseltine Lake & Co, Patent Agents,
Southampton Buildings in the County of Middlesex do hereby declare the nature
of my invention for "AN IMPROVED METHOD OF AND APPARATUS FOR PRODUCING
ARTIFICIAL RESPIRATION "and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement:-
The object of this invention is to restore natural respiration when it has ceased
or become faint through accidental causes or from disease, and to provide for
effectively administering remedial agents or medicaments to the respiratory organs
when necessary, independently of any aid and without the volition of the patient.
The said invention consists partly in placing a patient in an air-tight chamber in
any desired position and in alternately increasing and reducing the pressure of air
therein relatively to normal atinospheric pressure.
It also partly consists in the combination with an air-tight chamber suitable for
accommodating a patient, of a mechanism whereby the air within the chamber may
be alternately increased and reduced relatively to normal atmospheric pressure.
The accompanying drawings illustrate apparatus such as I have just described
and applicable to my method of treating patients. Figure 1 is a central vertical
section of one form of apparatus. Figure 2 is a transverse section of the same.
Figure 3 is a central vertical section of an apparatus of slightly modified form.
Figure 4 is a transverse section of the latter. Similar letters of reference designate
corresponding parts in all the figures.
A designates a chamber made of wood or other practically rigid material. It
may be of any desirable shape. Preferably it will be of such shape and size that
a patient may either be seated or laid down in it. I have shown it as provided
with a plate of glass a at the front. This will admit light and allow a patient to
see beyond the chamber when sitting within the same.
The chamber must be air-
tight. It has a hinged door a¹ controlling an opening through which the entrance
and exit of a patient may be made. This door and its door-way will be packed so
that air may not enter between them when the door is closed.
B designates a tube made of any suitable material preferably a flexible material,
leading from the interior to the exterior of the chamber. This tube is to be used
by a patient while occupying a seat in the chamber. At the inner end it is pro-
vided with a nose and mouth cover b. This may be secured in position on a
patient's face by a strap b¹. A patient using the tube breathes froin and back into
the atmosphere outside the chamber. Outside the chamber the tube may com-
municate with a vessel so that the air inhaled by the patient will be caused to pass
through the vessel and may thus become charged with a remedial agent or medica-
ment either of a liquid or gaseous character. An atomizer may be combined with
the vessel to effect the charging of the air if desirable, when a liquid is used therein,
and a gas generator may be employed in conjunction with the vessel when a gas
needed.
is
The mechanism which is employed to vary the pressure of air within the chamber
of the apparatus shown in Figures 1 and 2 consists of a flexible diaphragm C of
a rubber cloth or analogous material fitted to an aperture c formed in one of the
walls of the chamber. Normally this diaphragm is in the same plane as the wall
of the chamber with which it is combined. By forcing it inwards the pressure of

page_text: air within the chamber will be increased relatively to normal atmospheric pressure,
but if it is pulled outwards the pressure of air within the chamber will be decreased
relatively to normal atmospheric pressure. By moving it alternately inwards and
outwards in proper time an artificial respiration of the patient will be produced.
The operation may be effected by the hand of an attendant but to secure a
regularity in the increase and decrease of pressure it will be advantageous to attach
a rod D to the diaphragm and connect the rod to a crank E extending from a rotary-
shaft F. Provision may be afforded for varying the operation to suit a patient by
making a series of holes in the crank at different distances from the shaft and
connecting the rod to the different holes by a pin G passing through the rod and
entering one of the holes in the crank. If it is desirable to vary the increase of
pressure relatively to the decrease of pressure in treating different patients this may
be provided for by making a series of holes in the rod so that it may be connected
at different portions of its length to the crank.
A brake H may be used in conjunction with the shaft to hold the shaft in
any position in which it may be left when the operation of the apparatus ceases.
Thus the diaphragm may be normally kept in a position in the same plane of the
chamber with which it is combined. The brake shown is a weighted lever which
may be swung back when the apparatus is used and dropped on the shaft when the
operation of the apparatus is stopped.
The shaft is shown as journalled in brackets fastened to the chamber. It may be
rotated by a hand crank.
The apparatus shown in Figures 3 and 4 has a piston I and cylinder J, in lieu of
a diaphragm. One end of the cylinder is open to the interior of the chamber and
the other to the atmosphere outside the chamber. The piston may be operated by
a handle on its rod or by a rod D, crank E, shaft F, and brake H such as I have
described. The normal position of the piston will be midway in the length of the
cylinder. When moving in one direction from that position it will increase and
when moving in the opposite direction past such position it will decrease the pres-
sure of air in the chamber relatively to normal atmospheric pressuré.
A metronome may be used for a patient to breathe by and the attendant to work
by so as to secure synchronous operations if desirable.
In treating a partly drowned person the patient will be laid face downwards
with the neck in communication with a tube K leading outside the chamber as
thus facility will be afforded for removing the water.
The tubes BK will be provided with cocks so that either may be used at pleasure.
An apparatus for the treatment of partly drowned persons might be advan-
tageously made more in the shape of a long hollow box provided with a top cover.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is
First. The method of restoring natural respiration consisting in placing a patient
in an air-tight chamber with the respiratory organs in communication with the
outside atmosphere and in alternately increasing and reducing the pressure of air
in the chamber relatively to normal atmospheric pressure, substantially as specified.
Second. The combination with an air-tight chamber suitable for accommodating
a patient, of a mechanism whereby the air within the chamber may be alternately
increased and reduced, substantially as specified.
1 T
T
1000
HASELTINE, LAKE & Co.,
For the Applicant.