Improvements in Cylinder Valves for Steam Engines.
Year: 1896

page_text: Date of Application, 17th Feb., 1896-Accepted, 21st Mar., 1896
COMPLETE SPECIFICATION.
Improvements in Cylinder Valves for Steam Engines.
I, JAMES CLARKE GETTY, of Indiana, in the County of Indiana, and State
of Pennsylvania, United States of America, Gentleman, 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 valves for steam-engine cylinders. The object of my
invention is to provide simple and inexpensive means by which engine cylinders
may be kept free from water or condensed steam while at work without requiring
the attention of the engineer.
With this object in view, the invention consists of certain features of con-
struction and combination of parts, which will be hereinafter fully described and
claimed.
In the accompanying drawing in which like numerals of reference denote
corresponding parts in the several views:-
Fig. 1 is a longitudinal vertical sectional view of a steam cylinder with my
invention thereto applied.
Fig. 2 is a similar view on an enlarged scale of my invention showing the
exhaust valves in a position opposite to that shown in Fig. 1.
Fig. 3 is a detail perspective view of one of the valves removed from its casing.
1 denotes a steam cylinder, 2 the inlet ports, 3 the slide valve for controlling
the admission of steam to the cylinder, 4 the piston, and 5 the exhaust ports at the
ends of the cylinder.
These parts may be of any well-known or improved construction and as they
form no part of my invention a detail description of them is not deemed
necessary.
Pipes 6 and 7 are connected to the cylinder and communicate with the interior
thereof through the exhaust ports 5. Each of these pipes may be made in a
single piece and then bent downward and under the cylinder or as shown in the
accompanying drawing each pipe may consist of sections 9, 10, and 11, connected
by elbows 12 and 13. Valve casings 15 are secured to the inner ends of the
sections 11 and are provided with valve seats 16. Pipes 17 are connected to the
inner ends of the valve casings and in turn are connected with a T-joint which is
provided with an outlet pipe 18.
Check valves 19 and 191 are arranged within the valve casings 15. A rod 20
extends from valve to valve and has its ends fitting into sockets 21 formed in the
nner faces of the valves.
In operation, when steam is admitted at the end A of the cylinder, the check
valve 19 will be forced against its seat and be closed by the live steam entering
that end of the cylinder and the movement of this valve will be imparted to the
valve 191 by the rod 20 and the valve 19' will be moved from its seat and be
opened, thus allowing the water at the end B of the cylinder to escape.
he return stroke of the piston the valve 19' will be closed and the valve 19
vill be opened so as to allow the water to escape from the end B of the
ylinder.
On
In the present instance I have shown the ends of the rod 20 as being loosely
onnected to the check valves. This enables the parts to be fitted and insures
heir working whether the pipes, valves and valve-casings are true or not. I have
Iso shown the valves as being provided with laterally projecting guide arms 22
CD

page_text: and with supporting lugs 23. It is evident however that the rod may be fixedly
secured to the valves and they may be of any of the well known or improved
constructions without departing from the spirit of my invention.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, 1 declare that what I
claim is
The combination with an engine cylinder, of pipes connected at the ends thereof,
valve casings secured to the free ends of said pipes, short pipes secured to the
inner ends of the valve casings, a T joint connecting the inner ends of the short
pipe, valves located in said valve casings and having a notched periphery adapted
to abut against the valve seats in said casings and close the exit through the valves,
said valves being provided with sockets and with laterally projecting arms to slide
on the valve seats, and a rod engaged in said sockets and connecting the valves so
that the valves will be actuated in unison, substantially as described.
Dated this 14th day of February 1896.
WHEATLEY & MACKENZIE,
40 Chancery Lane, London, W.C., Agents.