IMPROVEMENTS IN LIQUID METERS
Year: 1869

page_text: LETTERS PATENT to John Loader, of Upper Clifton Street, Worship
Square, and William Henry Child, of Worship Street, both in the
County of Middlesex, for the Invention of "IMPROVEMENTS IN LIQUID
METERS."
Sealed the 11th March 1870, and dated the 9th December 1869.
PROVISIONAL SPECIFICATION left by the said John Loader and William
Henry Child at the Office of the Commissioners of Patents, with
their Petition, on the 9th December 1869.
We, JOHN LOADER, of Upper Clifton Street, Worship Square, and
WILLIAM HENRY CHILD, of Worship Street, both in the County of
Middlesex, do hereby declare the nature of the said Invention for
"IMPROVEMENTS IN LIQUID METERS," to be as follows:-
For this purpose we employ a pair of cylinders and a shaft or axis
common to both. On each end of this shaft or axis is formed or fixed
a crank pin or eccentric, and on each of such crank pins or eccentrics is

page_text: mounted a disc or piston, which is carried round thereon by the pressure
of the liquid passing through the cylinders. These discs or pistons have
their peripheries in contact with the inner peripheries of the cylinders,
and although they are carried round in an orbit on their crank pins, as
before described, they do not make a complete revolution on their own
axes, but only slightly rock to and fro thereon. A stop or abutment is
connected to each of such discs or pistons by means of a cylindrical
joint, which may be connected to the stop or abutment, in which case
the stop or abutment will be caused to slide to and fro in a suitable slot
formed for it in the cylinder; or the stop or abutment may be rigidly
fixed in the cylinder, and may pass through the two parts of a cylindrical
joint working in a correspondingly formed recess within the disc or piston,
a suitable space being formed within the disc or piston to receive the
stop or abutment as the disc or piston is carried round on its crank pin
or eccentric, the two parts of the cylindrical joint being forced together
by any suitable means so as to make a tight joint at those parts. The
cylinders or the discs or pistons are provided with a number of clastic
packing pieces, which are received into suitable undercut recesses formed
across their peripheries, whilst if desired the sides may be rendered tight
with capability of adjustment by means of a plate or disc forced up
thereto by springs, screws, or other suitable means. The discs or pistons
are mounted on opposite sides of their common axis. The inlet ports
are situated near to one side of the stops or abutments, and the outlet
ports near to the other side thereof. The two inlet ports and the two
outlet ports are connected together by suitable ways or passages. On
the common axis is formed or mounted a worm, which by taking into a
worm wheel gives motion to a suitable registering apparatus. Or motion
may be given to such registering apparatus by any other suitable
means
SPECIFICATION in pursuance of the conditions of the Letters Patent, 3
filed by the said John Loader and William Henry Child in the
Great Seal Patent Office on the 9th June 1870.
TO ALL TO WHOM THESE PRESENTS SHALL COME, wе, JOHN
LOADER, of Upper Clifton Street, Worship Square, and WILLIAM HENRY
CHILD, of Worship Street, both in the County of Middlesex, send 3
greeting.

page_text: WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Ninth day of December, in the
year of our Lord One thousand eight hundred and sixty-nine, in the
thirty-third year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto us, the said John Loader and William Henry
Child, Her special licence that we, the said John Loader and William
Henry Child, our executors, administrators, and assigns, or such
others as we, the said John Loader and William Henry Child,
our executors, administrators, and assigns, should at any time agree
with, and no others, from time to time and at all times thereafter
during the term therein expressed, should and lawfully might make,
use, exercise, and vend, within the United Kingdom of Great Britain
and Ireland, the Channel Islands, and Isle of Man, an Invention for
"IMPROVEMENTS IN LIQUID METERS," upon the condition (amongst others)
that we, the said John Loader and William Henry Child, our executors
or administrators, by an instrument in writing under our, or their,
or one of their hands and seals, should particularly describe and
ascertain the nature of the said Invention, and in what manner the
same was to be performed, and cause the same to be filed in the Great
Scal Patent Office within six calendar months next and immediately
after the date of the said Letters Patent.
NOW KNOW YE, that we, the said John Loader and William Henry
Child, do hereby declare the nature of our said Invention, and in
what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement thereof, that is.
to say :-
For this purpose we employ a pair of cylinders and a shaft or axis
common to both. On cach end of this shaft or axis is formed or fixed
a crank pin or eccentric, and on each of such crank pins or eccentrics is
mounted a disc or piston, which is carried round thereon by the pressure
of the liquid passing through the cylinders. These discs or pistons have
their peripheries in contact with the inner peripheries of the cylinders;
and although they are carried round in an orbit on their crank pins, as
before described, they do not make a complete revolution on their own
axes, but only slightly rock to and fro thereon. A stop or abutment is
connected to cach of such discs or pistons by means of a cylindrical
joint, which may be connected to the stop or abutment, in which case
the stop or abutment will be caused to slide to and fro in a suitable slot

page_text: two parts of a cylindrical joint e', working in a correspondingly formed
recess or cavity within the disc or piston, a suitable space d' being
formed in each dise or piston d to receive the upper end of its stop or
abutment e as the disc or piston is carried round on its crank pin or
eccentric c¹. In one part of the cylindrical joint e¹ is placed a packing
piece e, which is forced out by suitable springs so as to keep the joint
constantly tight. Instead of using a cylindrical joint and parts con-
nected therewith, as above described, the arrangement shewn at Figure 4
may be employed. Or instead of using fixed stops or abutments e we
sometimes employ stops or abutments which are fixed to the discs or
pistons by pins or cylindrical joints fixed to the stops or abutments, in
which case the stops or abutments will be formed separate from each
other, and will slide up and down in suitable guides provided for them,
as shewn by the red lines in Figure 3, the stops or abutments being only
slightly recessed in each end of each cylinder. These arrangements it
will be seen will prevent the discs or pistons d making a complete
revolution on the crank pins c', but will allow them slightly to rock to
and fro thereon. The discs or pistons are provided with packing
pieces d, which are forced outwards by springs d or by other suitable
means. These packing pieces are received into suitable undercut
recesses formed across the peripheries of the discs or pistons d, as shewn,
or if desired they may be applied to the cylinders instead of to the discs
or pistons, as will be readily understood. In some cases we pack one
side of each disc or piston by means of a disc or plate forced up thereto
by screws or other suitable means. The inlet ports f to the cylinders
are situated near to one side of the stops or abutments, and the outlet
ports g near to the other side thereof, the two inlet ports being both
connected with the chamber f', and the outlet ports being both con-
nected with the chamber g¹. On the common axis b is formed a worm b¹,
which by taking into a worm wheel gives motion by the pinion h¹ to
any suitable registering apparatus mounted on the top of the meter, but
which we have not shewn, as such is now well understood. Or if
desired motion may be given to the registering apparatus by any other
suitable means.

page_text: Having thus described the nature of our said Invention, and the mode
in which we carry the same into effect, we would have it understood
that we claim, the peculiar arrangements or combinations of apparatus
for measuring liquids, substantially as herein shewn and described.
In witness whereof, we, the said John Loader and William Henry
Child, have hereunto set our hands and seals, this Eighth day
of June, in the year of our Lord One thousand cight hundred
and seventy.