Improvements in Reducing Valves.
Year: 1892

page_text: Date of Application, 21st Dec., 1892
Complete Specification Left, 20th Sept., 1893-Accepted, 21st Oct., 1893
PROVISIONAL SPECIFICATION.
Improvements in Reducing Valves.
I, JOHN ELIOT HOWARD, of Coomb's Wood Tube Works, Halesowen, near-
Birmingham, Manufacturer, do hereby declare the nature of this invention to be-
as follows:-
The valve case consists of a cylinder having a piston working in it. The
inlet and outlet pipes are diametrically opposite to one another and lead to ports
on the inner face of the cylinder. The piston has a circumferential groove
which allows the steam or other fluid to pass round it from the inlet to the
outlet port. The outlet has a passage leading from it to the end of the cylinder
beyond the piston so that when the pressure here increases the piston is moved
longitudinally against an adjustable spring and so partially closes the ports.
diminishing the flow and thus reducing the pressure in the outlet to proper
amount.
...
J. E. HOWARD.
COMPLETE SPECIFICATION.
Improvements in Reducing Valves.
I, JOHN ELIOT HOWARD, of Coomb's Wood Tube Works, Halesowen, near
Birmingham, Manufacturer, 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 valve case consists of a cylinder having a piston working in it. The
inlet and outlet pipes are diametrically opposite to one another and lead to
ports on the inner face of the cylinder. The piston has a circumferential groove
which allows the steam or other fluid to pass round it from the inlet to the
outlet port. The outlet has a passage leading from it to the end of the
cylinder beyond the piston so that when the pressure here increases the piston
is moved longitudinally against an adjustable spring and so partially closes the
ports diminishing the flow and thus reducing the pressure in the outlet to the
proper amount.
DESCRIPTION OF THE DRAWINGS.
Figure 1 is a vertical longitudinal section of the valve and
Figure 2 is a horizontal section on the line XX Figure 1.
A is the inlet pipe and B the outlet pipe. C is a cylinder fixed in the valve.
shell by the nut D. EE are holes drilled in the cylinder C. F is a piston
working in the cylinder :-as shown it has two circumferential grooves in it
but the number of grooves may be varied.. The piston F has rods fl projecting.
from its top and bottom which pass through stuffing boxes G. The rods f¹
may be made hollow as shown and the upper one is acted upon by the spring H
whose strength can be adjusted by the screw and hand wheel I. J J are hollow
caps enclosing the ends of the rods f¹ and K is a passage leading from the
outlet B to the interior of the lower cap .
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
1. The combination of inlet and outlet pipes, a hollow cylinder perforated.

page_text: with holes leading to the inlet and outlet pipes, a piston in the cylinder, a
passage or passages in the piston connecting the inlet and outlet openings, a
spring acting on one side of the piston and a passage leading from the outlet to
the other side of the piston substantially as described.
2. Reducing valves substantially as described and shown in the drawings.
Dated this 13th day of September 1893.
J. E. HOWARD.