OR APPARATUS TO BE EMPLOYED IN DIVING OR SUBAQUEOUS OPERATIONS
Year: 1868

page_text: OR APPARATUS TO BE EMPLOYED IN DIVING OR SUBAQUEOUS OPERATIONS."—A.
communication from abroad by Cornwall Henwood and Robert
Harkness Twigg, both residing at Sombrero Island, in the West
Indies.
Sealed the 9th April 1869, and dated the 15th December. 1868.
PROVISIONAL SPECIFICATION left by the said Clinton Edgcumbe
Brooman at the Office of the Commissioners of Patents, with his
Petition, on the 15th December 1868.
I, CLINTON EDGCUMBE BROOMAN, of the Firm of Robertson, Brooman,
and Company, of 166, Fleet Street, in the City of London, Patent Agents,
do hereby declare the nature of the said Invention for "IMPROVED MEANS
OR APPARATUS TO BE EMPLOYED IN DIVING OR SUBAQUEOUS OPERATIONS," to be as
follows:-
The chief object of this Invention is to enable persons engaged
under water in any form of subaqucous machine or apparatus to hold

page_text: conversation with persons above water. I place a plate or partition
of metal or other material across or at either end of a speaking tube
one end of which communicates with the person above water, and the
other end with the person below water, or the plate or partition may
be a fixture to the subaqueous machine or apparatus, or form part of it, or
be fixed to or form part of an apparatus above water, the object of such
plate or partition being to prevent the compressed air in the subaqueous
machine from escaping and at the same time allow the sound to pass
with only a slight diminution in its force.
The subaqueous machine or apparatus is constructed of or partly
constructed of or lined or covered with such material (felt for example)
as shall reduce or annihilate all sounds that do not come through the
speaking tube. The person or persons under water has or have affixed
to him or them contrivances for reducing or annihilating such sounds
as do not come through the speaking tube, such as a pad over one ear
ring trumpet over-the-other, connected by a tube with the
speaking tube. The waste air is carried off from the subaqueous.
machine or apparatus by means of a pipe, so as to reduce the sound
made in escaping from some forms of subaqucous apparatus.
air
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Clinton Edgcumbe Brooman in the Great Seal
Patent Office on the 27th April 1869.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, CLINTON
EDGCUMBE 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 Fifteenth day of December, in the year
of our Lord One thousand eight hundred and sixty-eight, in the thirty-
second year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said Clinton Edgcumbe Brooman, Her
special licence that I, the said Clinton Edgcumbe Brooman, my exe-
outors, administrators, and assigns, or such others as I, the said Clinton
Edgcumbe Brooman, my exccutors, administrators, and assigns, should

page_text: at any time agree with, and no others, from time to time and at all
times thercafter 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
5 Invention for "IMPROVED MEANS OR APPARATUS TO BE EMPLOYED IN DIVING OR
SUBAQUEOUS OPERATIONS," (communicated to me from abroad by Cornwall
Henwood and Robert Harkness Twigg, two persons at present resident
at Sombrero Island, in the West Indies,) upon the condition (amongst
others) that I, the said Clinton Edgcumbe Brooman, my executors or
administrators, by an instrument in writing under my, or their, or onc
of their hands and seals, should particularly 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 Scal Patent
Office within six calendar months next and immediately after the date of
the said Letters Patent.
NOW KNOW YE, that I, the said Clinton Edgcumbe 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 ascertained in
and by the following statement thereof, that is to say :-
The chief object of this Invention is to enable persons engaged
under water in any form of subaqueous machinc or apparatus to hold
conversation with persons above water. I place a plate or partition
of metal or other material across or at either end of a speaking tube,
one end of which communicates with the person above water and the
other end with the person below water, or the plate or partition may
be a fixture to the subaqueous machine or apparatus or form part of
it, or be fixed to or form part of an apparatus above water, the object of
such plate or partition being to prevent the compressed air in the
subaqueous machine from escaping, and at the same time allow the
sound to pass with only a slight diminution in its force.
The subaqueous machine or apparatus is constructed of or partly
constructed of or lined or covered with such material as shall reduce
or annihilate all sounds that do not come through the speaking tube;
the person or persons under water has or have affixed to him or them
contrivances for reducing or annihilating such sounds as do not come
through the speaking tube, such as a pad over one ear and a hearing
trumpet over the other, connected by a tube with the speaking tube.
The waste air may be carried off from the subaqueous machine or

page_text: apparatus by means of a pipe so as to reduce the sound made in
escaping from some forms of subaqueous apparatus.
In witness whereof, I, the said Clinton Edgcumbe Brooman, have
hereunto set my hand and seal, this Twenty-fourth day of April,
One thousand eight hundred and sixty-nine.
C. E. BROOMAN. (L.s.)