Improvements in Valves for Controlling Steam Engines.
Year: 1899

page_text: Date of Application, 28th Mar., 1899
Complete Specification Left, 16th Dec., 1899-Accepted, 20th Jan., 1900
PROVISIONAL SPECIFICATION.
Improvements in Valves for Controlling Steam Engines.
WILLIAM PEPPER, Sunnyside, West Villas, Stockton-on-Tees, Engineer, do
hereby declare the nature of this invention to be as follows;―
My invention is to reduce the force necessary for sliding a valve by hand;
for this purpose I introduce a cylinder on the back of the valve, this is fitted with
a piston, the piston being supported on a lever carried by a spindle, one end of
which passes through a stuffing box and is operated in the usual manner, the
other end rests on a footstep so that the pressure of steam cannot push it end-
ways; by partly revolving the spindle the lever will carry the piston and slide
the valve along as required, the steam acts on the piston in place of the valve
and reduces the necessary force to work it.
In preference, I secure the piston on the lever as described, but the piston may
be on the valve, and the cylinder on the lever.
WILLIAM PEPPER, Sunnyside, West Villas, Stockton-on-Tees, 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:
My invention is to reduce the force necessary for sliding a valve by hand; for
this purpose I introduce a cylinder on the back of the valve, this is fitted with a
piston, the piston being supported on a lever carried by a spindle, one end of
which passes through a stuffing box and is operated in the usual manner, the other
end rests on a footstep so that the pressure of steam on the piston cannot push
it endways; by partly revolving the spindle, the lever will carry the piston and
slide the valve along as required, the steam acts on the piston in place of the
valve and thus reduces the necessary force to work it. In preference, I secure
the piston on the lever as described, but the piston may be on the valve and the
cylinder on the lever.
In order that my invention may be better understood I append a drawing
which shows the arrangement in sectional elevation, and plan.
The valve V is fitted with a piston P, at the back, this piston is suspended on
a lever L, which is part of, or attached to the spindle S, the valve is enclosed in
a steam case C, the top end of the spindle passes through a stuffing box B, and is
fitted with an arm A, for working the spindle.

page_text: As the piston P, forms the back of the valve V, the pressure in the case C,
cannot act on the full area of the valve but presses on the piston P, which is
carried by the lever L, and is supported at the bottom end of the spindle S.
The valve as made to slide by working the arm A and as the pressure is taken
off it and transferred to the bottom end of the spindle, as described, the force
required to slide it is reduced.
'
The valve does not travel in a straight line but from E, to F, along the
arc DD, the space H, is to allow it to have the necessary side travel for this.
Having now particularly described and ascertained the nature of my said in-
vention, and in what manner the same is to be performed, I declare that what
I claim is:
A piston, or cylinder, as the case may be, carried by an arm, or lever, as herein
set forth.