IMPROVEMENTS IN VALVE COCKS
Year: 1854

page_text: LETTERS PATENT to Samuel Perkes, of Walbrook, in the City of London;
Civil Engineer, for the Invention of "IMPROVEMENTS IN VALVE COCKS."-A
communication.
Sealed the 8th August 1854, and dated the 14th February 1854.
PROVISIONAL SPECIFICATION left by the said Samuel Perkes at the
Office of the Commissioners of Patents, with his Petition, on the 14th
February 1854.
I, SAMUEL PERKES, of Walbrook, in the City of London, Civil Engineer,
do hereby declare the nature of the Invention for "IMPROVEMENTS IN VALVE
Cocks" to be as follows:-
This Invention has for its object a peculiar construction and combination of
parts of a valve cock for drawing off liquids, and consists of forming the body
of the cock with a partition which divides the body into two parts or compart-
ments. In the partition is an opening to receive and become the seat of a
valve. The valve has a stem which passes through a tube forming part of the
cover of the opening into the body of the cock. The upper part of such tube is
formed into a stuffing box, which is pressed on by a screw. On the exterior of
the tube is formed a male screw, on which the handle (having a female screw
through it) turns, and by turning rises or falls. The handle has formed
thereon two uprights, which are connected together at the upper parts through
a hole, in which upper part the end of the stem of the valve passes and turns
freely. On the stem of the valve is formed a collar below, and a nut is
screwed on the stem of the valve above the metal which connects the two
uprights; hence when the handle is turned and rises or falls the valve will be
caused to rise off or close on to its seat.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed by
the said Samuel Perkes in the Great Seal Patent Office on the 11th
August 1854.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, SAMUEL
PERKES, of Walbrook, in the City of London, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Fourteenth day of February, in the year of our Lord
One thousand eight hundred and fifty-four, in the seventeenth year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto me, the said
Samuel Perkes, Her special licence that I, the said Samuel Perkes, my
executors, administrators, and assigns, or such others as I, the said Samuel
Perkes, 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 VALVE COCKS,"
communicated to me from abroad, upon the condition (amongst others) that
1, the said Samuel Perkes, by an instrument in writing under my hand and
seal, should particularly describe and ascertain the nature of the said Inven-
tion, 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 Samuel Perkes, 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) :-
This Invention has for its object a peculiar construction and combination of
parts of a valve cock for drawing off liquids, and consists of forming the body
of the cock with a partition which divides the body into two parts or compart-
ments. In the partition is an opening to receive and become the seat of a
valve. The valve has a stem which passes through a tube forming part of the
cover of the opening into the body of the cock. The upper part of such tube
is formed into a stuffing box, which is pressed on by a screw. On the exterior
of the tube is formed a male screw, on which the handle (having a female
screw through it) turns, and by turning rises or falls. The handle has formed
thereon two uprights, which are connected together at the upper parts through
a hole, in which upper part the end of the stem of the valve passes and turns
freely. On the stem of the valve is formed a collar below, and a nut is screwed

page_text: on the stem of the valve above the metal which connects the two uprights;
hence, when the handle is turned and rises or falls, the valve will be caused to
rise off or close on to its seat.
Having thus stated the nature of the said Invention, I will proceed to explain
the manner of performing the same.
DESCRIPTION OF THE DRAWING.
At
Figure 1 shows an external elevation of a valve cock constructed according
to the Invention. Figure 2 shows a longitudinal section thereof; and Figure
3 is a plan thereof. A is the barrel of the cock constructed with screw
couplings, as is shewn, but cocks according to this Invention may be fixed in
other ways. The barrel is made with an enlargement, and by preference of a
spherical form, where it is divided by a partition B, as shewn. The partition
B has a passage through it, which is closed when desired by the valve D on
the stem d. The stem d passes through the fixed cover and stem C screwed
into the upper part of the barrel, and rendered fluid-tight by a washer.
the upper part of the fixed stem C is formed a stuffing box to keep the passage
of the stem d of the valve D fluid-tight. On the upper part of the fixed stem
C is formed a screw a, a, on which the handle E moves, it having through it a
female screw corresponding with the male screw a; hence when the handle
E is turned the valve rises and falls by reason of the uprights g, g, which
come together at their upper ends, and there is an opening therein through
which the upper end of the stem d of the valve D passes, and in which it can
freely turn, the stem d being lifted and depressed by reason of the collars and
nut n at the upper end of the stem d.
Having thus described the nature of the said Invention, and the manner of
performing the sanie, I would have it understood that I make no claim to any
of the parts separately. But what I claim is the combination of parts herein
described.
In witness whereof, I, the said Samuel Perkes, have hereunto set my
hand and seal, this Ninth day of August, in the year of our Lord One-
thousand eight hundred and fifty-four.
Witness,
GEO. PITT,
4, Old Square.
SAMUEL PERKES. (L.S.)