IMPROVE- MENT IN STEAM PUMPS
Year: 1873

page_text: LETTERS PATENT to Robert James Worth, Engineer, of Stockton-
on-Tees, in the County of Durham, for the Invention of "IMPROVE-
MENT IN STEAM PUMPS."
Sealed the 2nd April 1874, and dated the 27th October 1873.
PROVISIONAL SPECIFICATION left by the said Robert James. Worth
at the Office of the Commissioners of Patents, with his Petition,.
on the 27th October 1873.
I, ROBERT JAMES WORTH, Engineer, of Stockton-on-Tees, in the
County of Durham, do hereby declare the nature of the said Invention
for "IMPROVEMENTS IN STEAM PUMPS," to be as follows:-
C
This Invention relates to improvements in steam pumps, which arc
either actuated directly by steam power or otherwise, and are equally
as suitable for feed pumps as for any other hydraulic purpose.
:
When used as a direct-acting steam pump I. place the steam cylinder
and the pump in a direct line, the piston of the steam cylinder and that;
of the pump being attached to the opposite ends of the same rod.

page_text: .
On the outside of the pump I cast or attach thereto a chamber or
valve chest, in which ports or inlets are formed communicating with
each end of the pump (similar to those in an ordinary steam cylinder),
by which the water is admitted into and expelled from the said pump,
and also a port (similar to the exhaust port of a steam cylinder), which
port forms the suction passage to the pump, and a passage is also cast
through the chamber or valve chest similar to the passage by which
steam would be conveyed to it were it a steam cylinder, and which said
passage forms the delivery way from the pump.
Nearly covering these ports in the pump is a slide valve having ports
cast through it corresponding with those in the pump. Through these
ports in the valve the water is admitted through the pump ports alter-
nately into each end of the pump.
Attached to or cast with the steam cylinder and in a direct line with
that on the pump is another valve chamber with ports for admitting
steam to the cylinder, similar to an ordinary steam cylinder, and covering
the said ports is an ordinary slide valve, which is connected with the
slide valve in the pump by a rod passing through both casings.
Attached to this steam slide valve, or the rod in connection with it, is
a piston working in a cylinder, herein-after called the auxiliary cylinder,
and on the back or side of this auxiliary cylinder is a valve, by means of
which and suitable ports and mechanical arrangements herein-after
described, steam is admitted alternately on each side of the piston in
said auxiliary cylinder.
The valve for admitting steam to the auxiliary cylinder is connected.
to the shorter end of a lever fixed in any convenient position, the longer
end of which lever is connected with the main piston rod of the steam
cylinder and pump, by which arrangement when the steam and pump
pistons are at the end of their stroke the valve of the auxiliary cylinder
is at the end of its stroke, and the steam is thus admitted to one end
of the auxiliary piston, driving it, together with the steam slide valve
and pump slide valve attached to it to the end of their stroke, causing
a movement of the pistons in the steam cylinder and pump by the
admission of steam to the steam cylinder, the same movement occurring
with the piston and valve at the end of each stroke of the pistons in the
main steam cylinder and pump by which steam is admitted to one and
water to the other, and a continuous reciprocation maintained.

page_text: In place of the ordinary slide valve and auxiliary cylinder a piston
valve may be used to answer both purposes, that is, to admit steam to
the main cylinder and to drive the pump slide valve, in which case the
piston valve is caused to move by auxiliary steam ports and a valve
exactly in the same manner as the piston in the auxiliary cylinder
herein-before described.
In another form of the pump I place the steam cylinder and pump in
a direct line and construct the said cylinder and pump exactly as herein-
before described, with the exception that the valve chests an steam
cylinder and pump need not necessarily be in a direct line, and the
auxiliary cylinder and ports and slide valve are altogether omitted. In
this form the steam piston rod is connected to one end of a triangle-
shaped frame and the pump piston rod to the opposite end, within which
frame works a connecting rod, causing the revolution of a crank shaft
and fly wheel, on which shaft are one or more eccentrics, which by
means of suitable rods give motion to the slide valves of the cylinder
and pump.
In place of the pump piston and rod herein-before described a ram
may be used, in which case there is only a passage from the slide face to
one end of the pump..
The
pump, piston rod, or ram may be worked from a crank or eccen-
tric on any revolving shaft, the pump slide valve being worked from
another crank or eccentric at right angles to the former.
SPECIFICATION in pursuance of the conditions of the Letters Patent
filed by the said Robert James Worth in the Great Seal Patent
Office on the 27th April 1874.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, ROBERT
JAMES WORTH, Engineer, of Stockton-on-Tees, in the County of Dur-
ham, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-seventh day of October, in the
year of our Lord One thousand eight hundred and seventy-three, in
the thirty-seventh year of Her reign, did, for Herself, Her heirs and
successors, give and grant unto me, the said Robert James Worth, Her
special licence that I, the said Robert James Worth, my executors,.

page_text: administrators, and assigns, or such others as I, the said Robert James
Worth, my executors, administrators, and assigns, should at any time
agree with, and no others, from time to time and at all times there-
after during the term therein expressed, should and lawfully might
makė, use, exercise, and vend, within the United Kingdom of Great 5
Britain and Ireland, the Channel Islands, and Isle of Man, an Inven-
tion for "IMPROVEMENTS IN STEAM PUMPS," upon the condition (amongst
others) that I, the said Robert James Worth, my executors or adminis-
trators, by an instrument in writing under my, or their, or one of their
hands and seals, should particularly describe and ascertain the nature 1
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 Robert James Worth, do hereby. 1
declare the nature of my 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 :-
This Invention relates to improvements in steam pumps, which are
either actuated directly by steam power or otherwise, and are equally as 2
suitable for feed pumps as for any other hydraulic purpose.
When used as a direct-acting steam pump I place the steam cylinder
and the pump in a direct line, the piston of the steam cylinder and that”
of the pump being attached to opposite ends of the same rod.
On the outside of the pump I cast or attach thereto a chamber or 2
valve chest, in which ports or inlets are formed communicating with
each end of the pump (similar to those in an ordinary steam cylinder),
by which the water is admitted into and expelled from the said pump,
and also a port (similar to the exhaust port of a steam cylinder), which
port forms the suction passage to the pump, and a passage is also cast. 3
through the chamber or valve chest similar to the passage by which
steam would be conveyed to it were it a steam cylinder, and which said
passage forms the delivery way from the pump.
Nearly covering these ports in the pump is a slide valve having ports.
cast through it corresponding with those in the pump. Through these 3
ports in the valve the water is admitted through the pump ports alter...
nately into each end of the pump..

page_text: Attached to or cast with the steam cylinder and in a direct line with
that on the pump is another valve chamber with ports for admitting
steam to the cylinder (similar to an ordinary steam cylinder), and;
covering the said ports is an ordinary slide valve, which is connected:
with the slide valve in the pump by a rod passing through both;
casings.
Attached to the steam slide valve, or the rod in connection with it,
is a piston working in a cylinder, hereafter called the auxiliary cylinder,,
and on the back or side of this auxiliary cylinder is a valve, by means
of which, and suitable ports and mechanical arrangements herein-after
described, steam is admitted alternately on each side of the piston in
said auxiliary cylinder.
The valve for admitting steam to the auxiliary cylinder is connected
to the shorter end of a lever fixed in any convenient position, the longer
end of which lever is connected with the main piston rod of the steam'
cylinder and pump, by which arrangement when the steam and pump
pistons are at the end of their stroke the valve of the auxiliary cylinder.
is at the end of its stroke, and the steam is thus admitted to one end of
the auxiliary piston, driving it, together with the steam slide valve and
pump slide valve attached to it, to the end of their stroke, causing a
movement of the pistons in the steam cylinder and pump by the admis-
sion of steam to the steam cylinder, the same movement occurring with
the piston and valve at the end of each stroke of the pistons in the
main steam cylinder and pump, by which steam is admitted to one and
water to the other, and a continuous reciprocation maintained.
In place of the ordinary slide valve and auxiliary cylinder a piston
valve may be used to answer both purposes, that is, to admit steam to:
the main cylinder and to drive the pump slide valve, in which case the
piston valve is caused to move by auxiliary steam ports and a valve,
exactly in the same manner as the piston in the auxiliary cylinder
herein-before described.
In another form of the pump I place the steam cylinder and pump in
a direct line, and construct the said cylinder and pump exactly as herein-
before described, with the exception that the valve chest on steam
cylinder and pump need not necessarily be in a direct line and the
auxiliary cylinder and ports and slide valve are altogether omitted. In
this form the steam piston rod is connected. to one end of a triangle

page_text: snaped frame and the pump piston rod to the opposite end, within
which frame works a connecting rod, causing the revolution of a crank
shaft and fly wheel, on which shaft are one or more eccentrics, which by
means of suitable rods give motion to the slide valves of the cylinder
and pump.
In place of the pump piston and rod herein-before described a ram
may be used, in which case there is only a passage from the slide face to
one end of the pump; the pump piston rod or ram may be worked from
a crank or eccentric or any revolving shaft, the pump slide valve being
worked from another crank or eccentric at right angles to the former.
Having thus stated the nature of my Invention, I will proceed to
describe the manner of carrying the same into practical effect, reference
being had to the accompanying Sheet of Drawings, and to the figures
and letters marked marked thereon.
Figure 1 represents a plan of the pump and steam cylinder with the
pump in section; Figure 2, a longitudinal elevation.
A is the pump; B, B, the pump piston and rod; D, triangle-shaped
frame, to which the pump and steam cylinder piston rods are attached;
E, pump slide valve shewing port ways cast through it; F, crank shaft;
G, fly wheel; H, H, eccentrics for working pump and steam cylinder
valves; I, steam cylinder. The slide valve E is shewn in the centre of
its stroke instead of its true relative position to the piston B to shew
more clearly the construction of the ports.
Having now described and particularly ascertained the nature of my
said Invention, and the manner in which it may be carried into effect,
observe in conclusion that which I claim as the Invention secured
to me by the herein-before recited Letters Patent is,―
I
may
9.
Firstly. The particular form of slide valve herein described, whether
used exactly as shown on the accompanying Drawing or in conjunction
with means for relieving the pressure on the back, also in direct-acting
steam pumps where the steam and pump valves are connected together
so as to work simultaneously by means of a smaller steam cylinder.
Secondly. The use of a slide valve of a similar form to that on the
accompaning Drawings, but with only one port through.

page_text: Thirdly. The general arrangement and construction of steam pumps
is severally herein-described and set forth.
In witness whereof, I, the said Robert James Worth, have here-
unto set my hand and seal, this Twenty-fourth day of April,
One thousand eight hundred and seventy-four.
ROBERT JAMES WORTH. (L.S.)