IM- PROVEMENTS IN INHALING TUBES
Year: 1853

page_text: LETTERS PATENT to Richard Archibald Brooman, of the firm of
Robertson, Brooman, and Co., of 166, Fleet Street, in the City of
London, Patent Agents, for the Invention of "IMPROVEMENTS IN
T
Scaled the 6th October 1853, and dated the 20th April 1853.
PROVISIONAL SPECIFICATION .left by the said Richard Archibald
Brooman at the Office of the Commissioners of Patents, with his
Petition, on the 20th April 1853.
I, RICHARD ARCHIBALD BROOMAN, of the firm of Robertson, Brooman,
& Company, of 166, Fleet Street, in the City of London, Patent
Agents, do hereby declare the nature of the said Invention for "IM-
PROVEMENTS IN INHALING TUBES" to be as follows:-
This Invention is an improvement in the construction of inhaling
tries for expanding the chest and exercising the lungs by means of
respiration. The theory on which the operation of these instruments
is tased is well known. It has been found to increase the beneficial
effect to exhale the breath under more pressure than is exerted in the
act of inhaling it; and to effect this is the object of this improvement.

page_text: (a) is a short tube of silver or other non-corrosive metal, which forms
the mouth piece. At the end of this is a valve chamber, consisting of
a short cylinder b, open at both ends. One end forms the seat for a
poppet valve (c), the guide stem of which plays within a socket in a
cap (d), which is attached at the opposite end of the said cylinder; the
cap being fitted like a stopper, so as to be readily taken out and re-
placed. Within this cap is a small orifice (e); and it is through this
that the breath is forced by exhaling. By enlarging or contracting this
orifice, various degrees of pressure, may be produced; and for that
purpose several caps may belong to one instrument, each having at (e)
a different sized orifice, so that this part may be very conveniently
regulated. The operation is as follows:-On placing the tube (a) in
the mouth, and drawing the breath, the valve (c) is lifted from its seat,
and permits the air to pass-through; but with a certain degree of
obstruction, so that some force is required. On fully inflating the
lungs the process of exhaling commences. This causes the valve (c)
to drop into its seat again. The air must then pass out by (e) which
increases the pressure, and therefore produces a greater degree of
mechanical action on the muscles and membranes of the chest and
lungs, thereby forcing the air into the most remote recesses of the
lungs, and producing the curative effects peculiar to this class of
instruments.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Richard Archibald Brooman, in the Great Seal
Patent Office, on the 19th October 1853.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I,
RICHARD ARCHIBALD BROOMAN, of the firm of Robertson, Brooman,
and Company, of 166, Fleet Street, in the City of London, Patent
Agents, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twentieth day of April, in the year of
our Lord One thousand eight hundred and fifty-three, in the sixteenth
year of Her reign, did, for Herself, Her heirs and successors, give and

page_text: grant unto me, the said Richard Archibald Brooman, Her special
licence that I, the said Richard Archibald Brooman, my executors,
administrators, and assigns, or such others as I, the said Richard
Archibald Brooman, my executors, administrators, and assigns, should
at any time agree with, and no others, from time to time and at
all times thereafter during the term therein expressed; should and
lawfully might make,, use, exercise, and, vend, within the United
Kingdom of Great Britain and Ireland, the Channel Islands, and
Isle of Man, an Invention for "IMPROVEMENTS IN INHALING TUBES,"
communicated to me by a foreigner residing abroad, upon the con-
dition (amongst others) that I, the said Richard Archibald Brooman,
by an instrument in writing under my hand and seal, should par-
ticularly describe and ascertain the nature of the said Invention, and
in what manner the same was to be performed, and cause the same to
be filed in the Great Seal Patent Office within six calendar months
next and immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Richard Archibald Brooman, do
hereby declare the nature of the said Invention, and in what manner
the same is to be performed, to be particularly described and ascer-
tained in and by the following statement thereof, reference being had
to the drawing hereunto annexed, that is to say:
This Invention has relation to the construction of inhaling tubes for
expanding the chest and exercising the lungs by means of respiration.
The theory on which the operation of these instruments is based is well
known. It has been found to increase the beneficial effect to exhale
the breath under more pressure than is exerted in the act of inhaling
it; and to effect this is the object of these improvements. The figure
of the drawing annexed represents an inhaling tube, as thus improved.
a, is a short tube of silver or other non-corrosive metal, which forms
the mouth piece. At the end of this is a valve chamber, consisting of
a short cylinder, open at both ends. One end forms a seat for a
poppet valve c, the guide stem of which plays within a socket in a
cap d, which is attached at the opposite end of the said cylinder; the
cap being fitted like a stopper, so as to be readily taken out and
replaced. Within this cap is a small orifice e; and it is through this
.

page_text: that the breath is forced by exhaling. By enlarging or contracting
this orifice, various degrees of pressure may be produced; and for
that purpose several caps may belong to one instrument, each having
at e, a different sized orifice, so that this part may be very conveniently
regulated.
The operation of the instrument is as follows:-On placing the tube a,
in the mouth, and drawing the breath, the valve c, is lifted from its seat,
and permits the air to pass through, but with a certain degree of obstruc-
tion, so that some exertion is required to overcome it. On fully inflating
the lungs the process of exhaling commences; this causes the valve c,
to drop into its seat again. The air must then pass out by e, which
increases the pressure, and therefore produces a greater degree of
mechanical action on the muscles and membranes of the chest and
lungs, thereby forcing the air into the most remote recesses of the
lungs, and producing the curative effects peculiar to this class of
instruments.
And having now described the nature of the said Invention, and in
what manner the same is to be performed, I declare that what I claim
is, the construction of inhaling tubes in such manner that the breath
of the user shall be exhaled under greater pressure than is exerted in
the act of inhaling, as herein-before described.
In witness whereof, the said Richard Archibald Brooman have
hereunto set my hand and seal, the Eighth day of October,
One thousand eight hundred and fifty-three.
R. A. DROOMAN. (L.S.)