IMPROVEMENTS IN THE VALVE PORTS AND STEAM PASSAGES OF STEAM CYLINDERS
Year: 1885

page_text: суплабго
JAMES CLYNE, Engineering Factor carrying on business at 3. Hadden Street,
Aberdeen do. hereby declare the nature of my invention for IMPROVEMENTS IN
THE VALVE PORTS AND STEAM PASSAGES OF STEAM CYLINDERS, to be as
follows:-
An arrangement of the valve ports and steam passages whereby the slide valve
is moved by the piston rod and travels always in the same direction as the piston.
This action is effected by reversing the steam passages from the ports, that is to
say when the piston is finishing the stroke at the lower end of the cylinder the
slide valve is moved in that direction by the piston rod the steam instead of going
to the top end of the cylinder as is usually the case is directed to the lower end of
the cylinder by the steam passage from the port to the cylinder being reversed.
Dated this nineteenth day of August 1885,

page_text: COMPLETE SPECIFICATION.
Improvements in the Valve Ports and Steam Passages of Steam
Cylinders.
I, JAMES CLYNE, Engineering Factor, carrying on business at 3 Hadden Street,
Aberdeen in the County of Aberdeen do hereby declare the nature of my inven-
tion for IMPROVEMENTS IN THE VALVE PORTS AND STEAM PASSAGES OF STEAM
CYLINDERS and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
This Invention has reference to a new and improved construction of the steam
passages from the ports to the cylinders, and consists of an arrangement of the
valve ports and steam passages whereby the slide valve is moved by the piston rod
and travels always in the same direction as the piston.
This action is effected by reversing the steam passages from the ports. That is 1
to say when the piston is finishing the stroke at the one end of the cylinder the
slide valve is moved in the same direction by the piston rod, thus opening the ports
at the opposite end of the valve for the admission of steam which through the
reversed passage gets at the same side of the piston thereby reversing its motion.
I may state that this effect can be performed either by the arrangement of an
auxilliary cylinder operating the main slide valve as herein after described in the
accompanying sketch or by a simple slide valve, in both cases operated by a kicker
or arm bolted to the piston rod and actuating two discs attached at proper regulated
distances on the valve spindle rod.
This is effected in the manner following.
The piston in completing the stroke moves, the disc or stop A by the arm or
kicker B, thus opening the steam passage C. The steam pressure moves the piston
valve D which carries along with it the slide valve E by which movement the
steam is admitted into the reversed passage F and so actuates the main piston, or
the arm or kicker B can operate a disc or stud placed in the same manner on the
slide valve spindle rod without an auxilliary valve.
This arrangement is not shewn in the accompanying sketch.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim and desire to be secured to me is
The reversed arrangement of Steam Passages only.