An Improved Arrangement of Valves for Controlling the Admission and Exit of the Actuating Force of any Fluid Pressure Engine.
Year: 1890

page_text: Date of Application, 23rd Jan., 1890-Accepted, 1st Mar., 1890
COMPLETE SPECIFICATION.
An Improved Arrangement of Valves for Controlling the Admission
and Exit of the Actuating Force of any Fluid Pressure Engine.
I, JOHN GEORGE MOORE, Engineer, 21, Dundas Street, Monkwearmouth,
(Sunderland), 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 invention relates firstly. To the introduction between the cylinder ports and
the distributing valve of another valve having ports in duplicate, each set coinciding
with the ports in cylinder face. Second, to a method of altering the angle of advances
of the eccentric.
Fig. 1 is a longitudinal section of cylinder. C is an ordinary slide valve actuated
by engine. E reversing valve. A cylinder ports. A¹ ordinary ports. A and A³ ports
constructed as shown. Ports A', A³, and A³ being all contained in reversing valve E.
Figure 2 is a vertical section through line M N.
Figure 3 is a vertical section through line O P.
Figure 4 shows section of plate used between valves C and E when valve C is a
double-ported valve.
Figure 5 shows the arrangement of reversing gear when the steam is used
expansively. R is the reversing lever to which is connected the spindle D of the
reversing valve E. I is a lever for moving the eccentric strap T into the position
necessary for the angle of advance for ahead and astern motion.
Figure 6 shows a method which may be used for changing the positions of the
reversing valve E and the eccentric strap T with one lever only, with this arrangement
the lead is fixed.
The action is as follows:-When the ports A¹ are put in communication with
cylinder ports A, on the moving (by an eccentric or other means) of valve E to right,
steam will enter through left hand port A' to cylinder port A and exhaust through
right hand port A¹ and down centre of reversing valve E into cylinder exhaust
port E', and hence to atmosphere or condenser, thus the engine will move in one
direction.
To reverse the direction, ports A³ and A³ are put in communication with cylinder
ports A A, when steam enters the right hand port A³, it is shut off from end of cylinder
by diagonal rib shown in figure 2, hence along passage A³ (fig. 2) to the underside of
rib separating diagonally ports A and A³, hence into cylinder left port A³, and the
engine will be exhausting out of cylinder right hand port A into reversing valve
port A3, hence along passage A2 into left hand port A³ and down centre of reversing
valve E into cylinder exhaust port E', hence to atmosphere or condenser.
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 is
1st. The means described and shown in figs. 1, 2, and 3 for controlling the admission
and exit of the actuating force of any fluid pressure engine.
2nd. The means shown in figure 4 for applying a double ported valve in place of
ordinary valve C.
3rd. The means described and shown in figs. 5 and 6 for the requisite alteration of
position of eccentric angle of advance for ahead and astern motion.
Dated this 23rd day of January 1890.
JOHN GEORGE MOORE,