IMPROVEMENTS IN METERS FOR MEASURING WATER OR OTHER FLUIDS, PARTS OF WHICH IMPROVEMENTS ARE APPLICABLE TO STEAM AND HYDRAULIC MOTIVE POWER ENGINES
Year: 1873

page_text: PROVISIONAL SPECIFICATION left by Arthur Henry Robinson at the
Office of the Commissioners of Patents, with his Petition," on the
26th November 1873.
I, ARTHUR HENRY ROBINSON, of the City of Dublin, Gentleman,
do hereby declare the nature of my said Invention for "IMPROVEMENTS IN
METERS FOR MEASURING WATER OR OTHER FLUIDS, PARTS OF WHICH IMPROVEMENTS
ARE APPLICABLE TO STEAM AND HYDRAULIC MOTIVE POWER ENGINES," to be as
follows:-
:
This Invention has for its object a simple and effective means of
measuring and indicating the quantity of water or other fluid passing
through a fluid meter.
In carrying out my Invention I employ a cylinder of a given capacity
through which the fluid to be measured is caused to pass. A piston is
made to work in the cylinder by the pressure of the inflowing fluid, and
on the outer end of the piston rod there is fitted or formed a rack which
actuates a toothed wheel or segment working loosely on a fixed nut, in
which nut works a screw spindle which operates the valves. The
rotation of the toothed wheel or segment elevates a weighted lever to a
:

page_text: position just beyond the vertical by means of a stop or projection
formed on the said toothed wheel or. segment coming in contact with a
corresponding stop fitted on the boss of the said lever; so soon as the
lever has just passed the vertical position the piston in the cylinder will
be at one end thereof; and the lever will then fall into a horizontal or
nearly horizontal position, and cause the screwed spindle to rotate in the
fixed nut, and thereby effect the alteration of the valves, and cause the
inflowing fluid to enter the cylinder at the opposite end thereof, the
fluid which was contained in the cylinder having been forced therefrom
by the traverse of the piston. The piston is loose and provided with a 1
stuffing box and is free to slide along the piston rod in order to admit
of a shorter piston rod being employed; collars are fitted or formed on
the piston rod for the purpose of enabling the piston to traverse the rod
the requisite distance for actuating the valves.
The valves for admitting and discharging the fluid from the cylinder
which are similar to those described in my Provisional Specification No.
2713, A.D. 1873, are contained in two separate chambers which are con-
nected to opposite ends of the cylinder by pipes or otherwise. Each
chamber is provided with a stuffing box through which one end of the
screw spindle before referred to passes so as to act upon the valves
therein, such end of the screw spindle being tubular and forming the
mouth of the outlet pipe. The tubular ends of the screw spindle each
have an opening situate opposite the delivery pipe, which pipe is in
connection with the stuffing box.
'
"Any ordinary counting mechanism may be applied in connection with
any convenient moving part of the apparatus for the purpose of
indicating the quantity of fluid measured.
The same arrangement of valves is applicable to steam and hydraulic
motive power engines.
Although I have described a weighted lever for actuating my valves,
I may in some cases employ eccentrics or other known contrivances for
imnartina motion to the valves.