IMPROVEMENTS IN METERS OR APPARATUS FOR MEASURING WATER OR OTHER LIQUIDS
Year: 1872

page_text: PROVISIONAL SPECIFICATION left by Charles William Earle Marsh
at the Office of the Commissioners of Patents, with his Petition, on
the 14th February 1872.
I, CHARLES WILLIAM EARLE MARSH, of Laurence Pountney Lane,
in the City of London, Civil Engineer, do hereby declare the nature
of the said Invention for "IMPROVEMENTS IN METERS OR APPARATUS FOR
MEASURING WATER OR OTHER LIQUIDS," to be as follows:-
This Invention has for its object the arrangement and construction of
self-acting apparatus for accurately measuring water or other liquids.
when flowing at various velocities, or so as to be capable of measuring
and registering irregular streams or otherwise.
For this purpose according to my Invention a self-acting tilting
bucket or vessel is employed, constructed with two compartments or
chambers, and arranged so as to tilt or turn over and empty themselves
alternately by means of floats and weight of liquid when the desired
quantity is received into one of its compartments, and at the same time
when one compartment is being discharged the other is placed in
position ready to receive the flow of liquid, which when it has also

page_text: received the desired quantity will act in like manner. The bucket or
measuring vessel is divided by a partition into two equal compartments,
by preference of triangular form, one side of which when uppermost
forms the top or open inlet and outlet for the liquid to be measured.
Pivots or axes are fixed upon the opposite ends of the bucket or vessel
upon which it can turn or vibrate freely. These axes are mounted in
suitable bearings to support the bucket or vessel which rocks or vibrates
thereon.
Each of the measuring compartments or chambers is fitted with a
float and catch or locking arrangement, which is so arranged that it will
keep the compartments in an upright position. As the compartment
fills with liquid the float rises, and when full it liberates the catch, and
the bucket or measuring vessel immediately balances over by the weight
of liquid it has received, thus emptying itself and bringing the other part
or compartment of the measuring vessel into an upright position under
the flow of liquid, where it locks itself until acted upon by the float
and fluid in the manner previously described. Supports or springs of
suitable construction and materials are placed under each compartment
to receive the concussion when it falls. These supports or cushions are
arranged so as to take the strain off the locking and other arrangements,
and also to prevent the bucket or vessel from moving beyond its pre-
scribed limit. Any suitable registering apparatus may be connected
with and so as to be acted upon by the tilting or measuring vessel,
in such manner as to indicate the successive alternate movements
thereof, for discharging the contents of the compartments in order to
register the volume or quantity of fluid which passes into and is dis-
charged from each compartment. The pivots or axes of the bucket or
measuring vessel should be placed at such a point that they will allow
sufficient weight over the centre of gravity as to give the vessel a rapid
motion when set free by the floats, by which means none of the liquid
is allowed to pass unmeasured during the tilting movement of the
apparatus.