A New Arrangement for Closing and Holding Corliss Valves.
Year: 1890

page_text: Date of Application, 13th Oct., 1890
Complete Specification Left, 6th July, 1891-Accepted, 8th Aug., 1891
PROVISIONAL SPECIFICATION.
A New Arrangement for Closing and Holding Corliss Valves.
JAMES BARBOUR of Falls Foundry Belfast Ireland Engineer do hereby
declare the nature of this invention to be as follows :-
--
The usual method of closing corliss valves when liberated from the opening or
trip gear is by a lever on the valve spindle which is connected by a rod to a
piston in a cylinder acted upon by a spring the cylinder containing a cushion of air
so that the valve is closed softly or without knock.
The object of this invention is to dispense with the connecting rod piston and
cylinder and their joints and with fewer parts or joints obtain a like or better action
in closing Corliss valves.
This object is attained by this new arrangement for closing and holding Corliss
valves which consists in fixing on the end of the valve spindle an oblong block
which is held between two or more flat springs that are fixed in a suitable position.
When the valve is closed the springs are deficcted least and are in contact with
the block on the end of the valve spindle.
When the valve is opened the flat springs are forced wider apart by the oblong
block turning between them.
When the valve is liberated from the opening gear the flat springs force the
block back to its position where the valve is closed the same springs acting as an
elastic stop to the valve thus a simple means is obtained for closing and holding
Corliss valves.
Dated this 10th day of October 1890.
JAMES BARBOUR.
COMPLETE SPECIFICATION.
A New Arrangement for Closing and Holding Corliss Valves.
JAMES BARBOUR of Falls Foundry Belfast Ireland Engineer 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 :-
The usual method of closing Corliss valves when liberated from the opening or
trip gear is by a lever on the valve spindle which is connected by a rod to a piston
in a cylinder acted upon by a spring the cylinder containing a cushion of air so that
the valve is closed softly or without knock.
The object of this invention is to dispense with the connecting rod piston and
cylinder and their joints and with fewer parts or joints obtain a like or better action
in closing Corliss valves.
This object is attained by this new arrangement for closing and holding Corliss
valves which consists in fixing on the end of the valve spindle an oblong block
which is held between two or more flat springs that are fixed in a suitable
position.
This new arrangement for closing and holding Corliss valves will be understood
from the following description reference being had to the drawing herewith in which
the same letters and figures of reference apply to the same or like parts.
Fig. 1 is a side elevation of so much of a steam engine cylinder with Corliss valves
as is necessary to shew the arrangement.
Fig. 2 is a top view of the springs.
This arrangement consists in fixing on the end of the valve spindle (a) an oblong

page_text: block (b) which is held between two or more flat springs (c) that are fixed to a
bracket (c) on the cylinder.
When the valve is closed the springs (c) are deflected least and are in contact
with the block (b) on the end of the valve spindle (a).
When the valve is opened the flat springs (e) are forced wider apart where in
contact with the block (b) by the oblong block (b) being turned on its centre
between them as shewn in the drawing on one of the valves.
When the valve is liberated from the trip or opening gear the flat springs (c)
force the block (6) back to the position where the valve is closed and the springs (c)
deflected least the same springs (c) acting as an elastic stop to the valve. Thus a
simple means is obtained for closing and holding Corliss valves in which the power
to close the valve is applied on each side of the centre of the valve spindle so the
spindle is balanced instead of being closed by a single lever on one side of the centre
as is usual.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
The combination of an oblong block on Corliss valve spindles moved and held
between flat springs as described for the purpose of closing and holding Corliss
valves.
Dated this 4th day of July 1901
JAMES BARBOUR.