IMPROVEMENTS IN THE CONSTRUCTION AND OPERATING OF CORLISS VALVES FOR STEAM-ENGINES
Year: 1884

page_text: We RALPH OGDEN and ISAAC MOORHOUSE LIVSEY both of Ashton-under-Lyne
in the County of Lancaster Engineers do hereby declare the nature of the said
invention for "IMPROVEMENTS IN THE CONSTRUCTION AND OPERATING OF CORLISS
VALVES FOR STEAM-ENGINES," to be as follows:-
The object of this invention is so to construct and operate the rotating valve
known as the "corliss" valve as to cause it to act as a "cut off" valve as well as
a steam admission valve so as to be enabled to work the steam expansively in
Corliss" Engines.
"
The invention consists principally in making the "Corliss" valve in a compound
form composed of a valve working inside an outer shell, which latter works in the
valve seating.
The internal valve may be used as a steam admission valve and the outer shell
as the "cut off" valve, or the shell may act as the main valve and the internal
valve as the "cut off."
The steam admission valve is operated in the usual way of working Corliss
valves, that is by oscillation or partial rotation, and the "cut off" valve is also
worked by an oscillatting movement but in the reverse direction.
The main valve may be worked by an excentric, and the "cut off" valve be
worked by either cam, tappet, excentric, or crank and always put forward.or
backward by the governor, thereby regulating the grade of the "cut off" to the
load on the Engine.
"
The "Exhaust" valves would be ordinary "Corliss valves and worked by an
excentrio

page_text: We RALPH OGDEN and ISAAC MOORHOUSE LIVSEY both of Ashton-under-Lyne
in the County of Lancaster Engineers do hereby declare the nature of our invention
for IMPROVEMENTS IN THE CONSTRUCTION AND OPERATING OF CORLISS VALVES
FOR STEAM ENGINES" and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement:-
The object of this invention is so to construct and operate the rotating valve
known as the "Corliss" valve, as to cause it to act as a "cut-off" valve as well as
a steam admission valve, so as to be enabled to work the steam expansively in
Corliss Engines."
Such being the nature and object of our said invention we will now proceed |
to describe in detail the manner in which the same is to be or may be performed or
.carried into practical effect, and in order that the same may be clearly understood
we have annexed hereunto a sheet of drawings illustrative thereof and have
. marked the same with figures and letters of reference corresponding with those in
the following explanation thereof.
. Fig. 1. in the annexed drawings is a side elevation of part of the valve gear of...
a Corliss Engine, together with a longitudinal section through the cylinder, steam
passages, valve boxes and valves, showing the application of our invention thereto;
and Fig. 2 is an end elevation thereof showing the valve seating in section.
The invention consists principally in making the Corliss valve in a compound
form composed of an internal valve a, a working inside an outer shell b, b which
latter works in the valve seating c, c.
The internal valve a, a may be used as a steam admission valve, and the outer
shell b, b as the "cut-off" valve, or the shell b, b may act as the main valve, and
the internal valve a, as the "cut off."
In the drawing the latter is shown, the shell b, b being attached to the head d, d
at the end of the rod e, e which is the ordinary valve rod; and the internal
- valve a, a being attached to the rod ff on which is keyed the lever g, g the
connection of which to the grooved sleeve h, h on the governor spindle is shown by
the dotted centre lines in Fig. 1.
The shell b, b which in this instance acts as the steam admission valve, is
operated by the lever i, i in the ordinary way of working "Corliss valves" that is
by oscillation or partial rotation, and the internal or "cut-off" valve a, a is also
worked by an oscillating or partially rotating movement but in the reverse
direction.
;
The main valve may be worked by an excentric and the "cut off" valve be
worked by either cam, tappet, excentric, crank or other convenient means, and i
always put forward or backward by the governor thereby regulating the grade of
the cut off" to the load on the Engine.
The exhaust valves k, k are the ordinary "Corliss valves" worked by an
excentric.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what
we claim is the construction and use of a compound "Corless valve" composed of

page_text: an internal valve working inside an outer shell which latter works in the valve
seating, so as to enable the same to act as a "cut-off" valve as well as a steam
admission valve substantially in the manner hereinbefore described and illustrated
by the drawing annexed.