Improvements.in Direct Acting Motors and Pumps.
Year: 1892

page_text: "Date of Application, 15th. 'July, 1892-Accepted, 3rd Sept., 1892.
COMPLETE SPECIFICATION.
Improvements.in Direct Acting Motors and Pumps.
We BRIERLEY DENILAM HEALEY of Bamber Bridge in the County of Lancaster
Civil Engineer,.and. GEORGE. SOUTHERN of Station Road, Bamber Bridge afore-
said, Mechanical 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 :-
This invention refers to change valves for operating the main valves, and to
tappet gear for operating the change valves of direct action motors, such as are
used for pumps and motors for various purposes, and is a further development
of the details shewn and described in the Specification of Patent No. 2429,
A.D. 1882.
And in order that this invention may be understood three sheets of drawings
are appended hereto.
Figure 1 is a section of main cylinder one half along the main valve and one half
along the change valve: Figure 2 is a section through or across the valve chambers
shewing the valves at the centre of their stroke: Figure 3 is an end view and
Figure 4 is a transverse section, all referring to the apparatus when used as a
motor. Figure 5 is a section shewing the application as adapted to a pump:
Figure 6 is an end view: Figure 7 is a side view: Figure 8 is a transverse
section Figure 9 is a section across the main valve chamber, and Figure 10 is an
enlarged section of the suction valves of the pump.
Either water or steam may be used for driving the apparatus herein referred to.
Referring to Figures 1 to 4, as the main piston a approaches the left hand
tappet the change valve e will move towards the right and uncover the passage d,
the chambers being open to the exhaust and the chambers of open to steam
pressure, the main valve y will move to the right and thereby admit steam to the
left hand end of the main cylinder.
P
When the main piston arrives at the right hand end of the main cylinder a similar
action of the parts will then take place.
The ends of main valve chamber have plugs which regulate the travel of the
main valve. The piston rod may run through both covers of cylinder or only
through one cover.
Referring to Figures 5 to 10, the water in the left hand cylinder A having
driven the main piston to the right hand end of cylinder C, the tappet D
has been pushed to the right, and carried with it the change spindle E. The
passages F being open to the exhaust, and the chamber G under pressure, the
slide valve plunger H has gone to the right, and admitted pressure to the right
hand cylinder A. When the piston B arrives at the left hand end of the
cylinder C, the action of the parts will be repeated in a similar manner. The
suction valves J and delivery valves K may be placed at the side or at the top
of main cylinder C.
It is obvious that the cylinders A may be separated from the cylinder C by a
connecting trunk without departing from the object of this invention.

page_text: Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed we declare that what we
claim is :-
1. The use of improved tappet combined with a change valve for operating the
main valve of motors or pumps substantially as herein shewn and described.
Dated this Thirteenth day of. July 1892.
B. D. HEALEY.
GEORGE SOUTHERN.