Im- PROVEMENTS IN DIRECT ACTING STEAM PUMPS
Year: 1875

page_text: LETTERS PATENT to Thomas King, of Langley, near Oldbury, in
the County of Worcester, Engineer, for the Invention of "Im-
PROVEMENTS IN DIRECT ACTING STEAM PUMPS."
Sealed the 7th September 1875, and dated the 10th July 1875.
PROVISIONAL SPECIFICATION left by the said Thomas King at the
Office of the Commissioners of Patents, with his Petition, on the
10th July 1875.
I, THOMAS KING, of Langley, near Oldbury, in the County of
Worcester, Engineer, do hereby declare the nature of the said In-
vention for "IMPROVEMENTS IN DIRECT ACTING STEAM PUMPS," to be as
follows:-
:―
The Invention has for its object improvements in that class of steam
pumps in which the steam and pump cylinders are fixed in a line with
each other on a casting or bed plate, and in which the steam and pump
pistons are connected to or fixed upon the same piston rod, and consists
in a novel arrangement and combination of parts, whereby a simple and

page_text: efficient steam pump is produced. For this purpose I arrange at each
end of the steam cylinder a stud or pin, which studs or pins pass through
stuffing boxes fixed to the cylinder covers, and extend a short distance
into the interior thereof. These studs or pins are provided with heads,
which act in combination with the lower or inner ends of levers mounted
upon axes of motion fixed to the cylinder covers. These levers are pin
jointed to rods which pass through stuffing boxes fixed to the ends
of the valve chest, and are connected to the valve. Thus when the
piston arrives at or near either end of the steam cylinder it strikes
against one of the studs or pins, and thereby reverses the steam valvo,
by which means the steam is admitted to the cylinder just before the
completion of the stroke, thereby providing an efficient cushion and
preventing the slamming of the piston against the cylinder ends or
covers.
The pump cylinder has arranged on each side thereof a valve chamber,
each of which is provided with a pair of valves, the one pair governing
the admission and the other the outlet passages. One inlet valve and
one outlet valve communicate with one end of the cylinder, and the
other valves communicato with the other end of the cylinder, whilst
both of the outlet valves open into or communicate with an air chamber,
by which the pressure and flow of water are equalised.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Thomas King in the Great Seal Patent Office on
the 10th January 1876.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, THOMAS 2
KING, of Langley, near Oldbury, in the County of Worcester, Engineer,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Tenth day of July, in the year
of our Lord One thousand eight hundred and seventy-five, in the 8
thirty-ninth year of Her reign, did for Herself, Her heirs and suc-
cessors, give and grant unto me, the said Thomas King, Her special
license that I, the said Thomas King, my executors, administrators,
and assigns, or such others as I, tho said Thomas King, my executors,

page_text: 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
DIRECT ACTING STEAM PUMPS," upon the condition (amongst others) that
I, the said Thomas King, 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 In-
vention, 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 Thomas King, 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 Invention has for its object improvements in that class of steam
pumps in which the steam and pump cylinders are fixed in a line with
each other on a casting or bed plate, and in which the steam and pump
pistons are connected to or fixed upon the same piston rod, and consists
in a novel arrangement and combination of parts, whereby a simple and
efficient steam pump is produced. For this purpose I arrange at each
end of the steam cylinder a stud or pin, which studs or pins pass through
stuffing boxes fixed to the cylinder covers, and extend a short distance
into the interior thereof. These studs or pins are provided with heads,
which act in combination with the lower or inner ends of lovers mounted
upon axes of motion fixed to the cylinder covers. These levers are pin
jointed to rods which pass through stuffing boxes fixed to the ends of
the valve chest, and are connected to the valve. Thus when the piston
arrives at or near either end of the steam cylinder it strikes against one'
of the studs or pins, and thereby reverses the steam valve, by which
means the steam is admitted to the cylinder just before the completion
of the stroke, thereby providing an efficient cushion, and preventing the
slamming of the piston against the cylinder ends or covers.
The numn aulinder has ornonged on each side thereof a value chamber

page_text: which the pressure and flow of water are equalised, and from which it
passes by the pipe n. o is the inlet passage for the water into the inlet
valve chamber j.
Having thus described the nature of my said Invention, and the mode
in which I carry the same into effect, I would have it understood that
what I claim as my Invention of improvements in direct acting steam
pumps is,―
Firstly. The peculiar arrangement and combination of parts by which
the steam is governed in its admission to and emission from the steam
cylinder by an ordinary slide valve, operated in manner substantially as
herein shown and described.
And, Secondly. I claim the peculiar arrangement and combination of
parts by which the water is governed in its admission to and emission
from the water cylinder by means of two pairs of valves, which aro
arranged in valve chambers on each side of the cylinder i, in manner
substantially as herein shown and described.
In witness whereof, I, the said Thomas King, have hereunto set
my hand and seal, this Fourth day of January, in the year of
our Lord One thousand eight hundred and seventy-six.
THOMAS KING. (L.S.)