Improvements in and relating to Rotary Valves.
Year: 1899

page_text: Date of Application, 28th Feb., 1899-Accepted, 8th Apr., 1899
Improvements in and relating to Rotary Valves.
▲ communication from abroad by THE UNITED STATES STEERING GEAR AND VALVE
COMPANY, doing business at 239, Washington Street, Jersey City, in the
County of Hudson and State of New Jersey, United States of America.
I, PETER JENSEN, of No. 77, Chancery Lane, London, Chartered Patent Agent, do
hereby declare the nature of this invention, and in what manner the same is
to be performed; to be particularly described and ascertained in and by the
following statement; -
My invention relates to certain new and useful improvements in the class of
controlling valves, particularly to that class employed in the manipulation and
control of final moving devices, such as steering apparatus, elevators, hoisting
apparatus, or other similar machinery."
The object of my invention is the production of rotary valves which will
enable a final mover to be set in motion to any desired extent, checked at inter-
mediate points, and held in such checked position, and also readily reversed:
and with these ends in view my invention consists in the novel construction of
certain details and peculiar arrangement of parts, as will be more fully herein-
after described and specifically pointed out in the claims.
In order that those skilled in the art to which my invention pertains may fully
understand the same, I will proceed to describe the construction, arrangement,
and operation of the several parts, reference being had to the accompanying
drawings, in which-
Figure 1 is a vertical section of the device.
Figure 2 is a cross section on line x-x of Figure 1.
Figure 3 is a cross section on line y-y of the same.
Figure 4 is a cross section on line of the same.
Figure 5 is a vertical section of a modified form of rotary valve.
Figure 6 is a cross section on line 1-1 of Figure 5.
Figure 7 is a cross section on line 2-2 of same.
Figure 8 is a similar view on the line 3-3.
Figure 9 is an end elevation of a valve attached to a cylinder.
Figure 10 is a side elevation of the same.
In the drawing A represents the valve casing, of conical shape, with an upper
flange a provided with a screw. stuffing box B and a gland c. The lower end of
the body has a similar stuffing box C containing a gland d. Through these
stuffing boxes and glands the stem e of a conical plug valve D forming the con-
trolling valve extends and is provided with a hand wheel, or a sheave connected
by a wire rope or its equivalent to the pilot house or any distant point from
which it is to be operated. The stem f is provided with a connection to any
moving part of the engine and actuates the floating valve E. The valve D has
the ports g and h in its face, and the floating valve E has the ports i and k, which
in turn communicate with the annular spaces ? and m in the body or casing of

page_text: the valve. The inlet F is connected by a pipe to the boiler or other place of
supply. The nozzles or openings G and H connect by suitable pipes with the
opposite ends of the cylinder K and the outlet openings n and o communicate
with the condenser or the atmosphere by means of the nozzle I. In the space m
a partition p is arranged on each side, to separate the two sides, and thus the
live steam from the exhaust. In this case the inlet pipe connects directly with
the annular space m, as shown in Figs. 1 and 2.
In Figures 5 to 8 inclusive the inlet pipe F is shown connected above the
valve D and the port g communicates with the space above said valve.
If desired, the inlet opening may, however, be made through the cover a, as
indicated by the broken lines in Figure 1, and the exhaust opening can be
changed to suit different circumstances.
The stems e and f can pass through the casing without stuffing boxes, and a
conical seat may be formed surrounding the conical projections or collars formed
on the stems, as shown by the broken lines in Figure 1.
The operation is as follows:
The valve D is first opened and the steam will then pass through the ports i
and and the opening G to one end of the cylinder and will cause the piston
to move. The exhaust steam will pass through the pipe connecting the other
end of the cylinder with the opening H, pass through the port h and openings n,
o and I to the condenser or the atmosphere. The piston being connected to the
floating valve causes it to turn and close the ports in the controling valve,
thus stopping the engine-By-this-means-the-piston_can_be_moved and held in
any pre-determined position and thereby control the position of the rudder or
its equivalent.
To reverse the action of the piston the operation is reversed by turning the
valve D so that the ports-g-and-k-connect-with-the-opening_H_and_the_pipe
leading to the opposite end of the cylinder.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, I declare that what
I claim is: :-
1. A rotary valve consisting of the controlling valve D actuated as described,
and provided with ports g and h, in combination with the floating valve E having
ports i and communicating with the annular spaces and m in the body of
the valve casing, as specified.
2. The rotary valve herein described, consisting of the body having annular
spaces 1, m, communicating with the ports i, k in the floating valve E and the
ports g, h in the controlling valve D, and the openings G, H with opposite ends
of the cylinder and the exhaust opening I, all as shown and for the purpose
set forth.
Dated this 28th dox of Fah 1900
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.