IMPROVEMENTS IN APPARATUS FOR COMPRESSING AIR
Year: 1874

page_text: LETTERS PATENT to William Robert Lake, of the Firm of Haseltine,
Lake, & Co., Patent Agents, Southampton Buildings, London, for
the Invention of "IMPROVEMENTS IN APPARATUS FOR COMPRESSING
AIR." A communication from abroad by Joseph François and
Guillaume Dubois, both of Seraing, Belgium.
PROVISIONAL SPECIFICATION left by the said William Robert Lake
at the Office of the Commissioners of Patents, with his Petition,
on the 5th December 1874.
I, WILLIAM ROBERT LAKE, of the Firm of Haseltine, Lake, & Co.,
Patent Agents, Southampton Buildings, London, do hereby declare the
nature of the said Invention for "IMPROVEMENTS IN APPARATUS FOR COM-
PRESSING AIR," a communication, to be as follows:-
This Invention consists chiefly in a novel construction and arrange-
ment which permit the giving of large sections to the suction valves, to
obtain a considerable wet surface in the interior of the compressor with

page_text: a minimum quantity of water, and thereby permit with safety a
maximum velocity of the piston, and consequently a maximum pro-
duction of compressed air.
SPECIFICATION filed in pursuance of the conditions of the Letters
Patent, and of an Order of the Lord Chancellor, by the said
William Robert Lake in the Great Seal Patent Office on the
15th June 1875.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
ROBERT LAKE, of the Firm of Haseltine, Lake, & Co., Patent Agents,
Southampton Buildings, London, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Fifth day of December, in the year of our
Lord One thousand eight hundred and seventy-four, in the thirty-
eighth year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said William Robert Lake, Her special licence
that I, the said William Robert Lake, my executors, administrators, and
assigns, or such others as I, the said William Robert Lake, 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 APPARATUS FOR COMPRESSING AIR," a communication to
me from abroad by Joseph Francois and Guillaume Dubois, both of
Seraing, Belgium, upon the condition (amongst others) that I, the said
William Robert Lake, my executors or administrators, by an instru-
ment in writing under my, or their, or one 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 Seal Patent Office on or before
the Eighteenth day of June, One thousand eight hundred and seventy-
five.
NOW KNOW YE, that I, the said William Robert Lake, do hereby
LT

page_text: same is to be performed, to be particularly described and ascertained
in and by the following statement, reference being had to the accom-
panying Drawing forming a part of this Specification :-
This Invention consists chiefly in a novel construction and arrange-
ment which permit the giving of large sections to suction valves, to
obtain a considerable wet surface in the interior of the compressor with
a minimum quantity of water, and thereby permit with safety a
maximum velocity of the compressing piston, and consequently a
relative maximum production of compressed air.
DESCRIPTION OF THE DRAWINGS.
Figure 1 is a plan of the said Invention; Figure 2 is a section on the
line A, B, Figure 1; Figure 3 is a section on the line C, D, Figure 1;
Figure 4 is an end view of the said apparatus. Like letters indicate
the same parts throughout the Drawings.
A is a double-acting compressing piston; B is the rod of this piston;
O is the body of the compressor and chests containing the delivery
valves F, F¹; D, D', are inclined ends or covers of the body of the
compressor in which are fitted the suction or foot valves E, E¹; G, G¹,
are injecting nozzles with numerous holes continually open for intro-
ducing water into the interior of the compressing apparatus, this water
being obtained from compressed air accumulating vessels.
In witness whereof, I, the said William Robert Lake, have here-
unto set my hand and seal, this Twelfth day of June, in the
year of our Lord One thousand eight hundred and seventy-
five
Witness,
HENRY JAMES NOONE.
Wx. ROBT. LAKE. (L.S.)