IMPROVEMENTS IN THE CONSTRUCTION OF CYLINDERS FOR PUMPS AND STEAM ENGINES
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 THE CONSTRUCTION OF CYLINDERS FOR
PUMPS AND STEAM ENGINES."-A communication from abroad by George
F Blake of Boston. Massachusetts. United States of America.
PROVISIONAL SPECIFICATION left by the said William Robert Lake
at the Office of the Commissioners of Patents, with his Petition,
on the 21st 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 THE CONSTRUCTION OF
CYLINDERS FOR PUMPS AND STEAM ENGINES," a communication, to be as
follows

page_text: cylinder or casing, with which are combined the valves and passages for
admitting and exhausting or discharging the water or steam. The said
detachable cylinder has at one end a flange which extends over the
passages leading from these valves to the same end of the said cylinder, and
apertures are made through the said flange corresponding with the said
passages or ports. The passages have at or near the centre a partition
which cuts off the communication between the two ends of the cylinder.
The said cylinder is held in place relatively to the casing by means of
a bonnet which is bolted over the aforesaid flange and casing, and forms
a continuation of the ports or passages at the end to which the said flange
is secured.
I may apply the said Invention to pumps or engines in which the
suction and discharge valves have separate ports or to those wherein the
same port is used for both suction and discharge.
By the above construction of the flange the joint around the ports is
readily finished with the cylinder, and the said detachable cylinder
may be readily removed from the casing and replaced by another of the
same or a different diameter without disturbing the other parts of the
pump.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said William Robert Lake in the Great Seal Patent
Office on the 12th 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 Twenty-first 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
with
time agree
and no others, from time to time and at all times thereafter during
the term therein expressed, should and lawfully might make, use,

page_text: exercise, and vend, within the United Kingdom of Great Britain and
Ireland, the Channel Islands, and Isle of Man, an Invention for "Im-
PROVEMENTS IN THE CONSTRUCTION OF CYLINDERS FOR PUMPS AND STEAM ENGINES,"
a communication to me from abroad by George F. Blake, of Boston,
Massachusetts, United States of America, upon the condition (amongst
others) that I, the said William Robert Lake, my executors or admi-
nistrators, by an instrument 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 within six calendar months next and immediately after the date
of the said Letters Patent.
NOW KNOW YE, that I, the said William Robert Lake, 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, reference being had to the accom-
panying Drawing forming a part of this Specification:-
.
This Invention relates to a detachable or removable cylinder for
pumps
and engines. This detachable cylinder is placed within an outer
cylinder or casing, with which are combined the valves and passages for
admitting and exhausting or discharging the water or steam. The said
detachable cylinder has at one end a flange, which extends over the
passages leading from these valves to the same end of the said cylinder,
and apertures are made through the said flange corresponding with the
said passages or ports; the said cylinder is held in place relatively to
the casing by means of a bonnet which is bolted over the aforesaid
flange and casing, and forms a continuation of the ports or passages at
the end to which the said flange is secured..
Figure 2 shews the said Invention applied to a cylinder wherein the
same port is used for both suction and discharge.

page_text: A is the removable or detachable cylinder; B is the enlarged flange of
the said cylinder; and C is the bonnet, which is secured by bolts passed
through the flange B into the casing D, and which thereby holds the
said cylinder in place.
It is obvious that the flange B forms a partition which prevents com-
munication between the two ends of the cylinder by the space around the
same within the casing D, and the partition E cuts off the communi-
cation between the two ends of the passages F, F¹; B¹, B', are ports or
apertures in the flange B. By this improved construction of the flange
the joint around the ports is easily finished with the cylinder, and the
said detachable cylinder may be readily removed from the casing D and
replaced by another of the samo or a different diameter without dis-
turbing the other parts of the pump.
This Invention will be found highly advantageous for pumps used in
mines and other places where the water contains gritty substances which
rapidly destroy the interior of the cylinder. The detachable cylinder can
be removed and replaced by a new one in a very short time, and therefore
the disastrous consequences of a long stoppago of the pumps in a mine
will be entirely obviated.
Having thus fully described the said Invention as communicated to me
by my foreign correspondent, and the manner of performing the same,
I wish it understood that I claim, the detachable cylinder A constructed
with the flange B and the ports or apertures B¹ therein, in combination
with the head or bonnet C arranged to form the passages at the end of
the cylinder A and serving to fasten the said cylinder in place as above
set forth.
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 thoround sight twindend and are fo
Witness,
HY. JA'. NoONE.
W. ROBT. LAKE. (L.S.)

page_text: LONDON Printed by GEORGE EDWARD EYRI and WILLIAM SPOTTISWOODE
Printers to the Queen's most Excellent Majesty 1875