provements in Liquid Meters and in Machinery for Producing the same.
Year: 1890

page_text: Date of Application, 30th Apr., 1890
Complete Specification Left, 30th Jan., 1391-Accepted, 7th Mar., 1891
PROVISIONAL
QURALDICATION
Improvements in Liquid Meters and in Machinery for Producing
the same.
L, WALTER GEORGE KENT, of 199, 200 and 201, High Holborn, in the County
of Middlesex, Manufacturer, do hereby declare the nature of this invention to be
as follows:-
--
This invention has for its object improvements in liquid meters and in machinery
for producing the same.
The class of meter to which my invention applies is that in which a piston of
oval form rotates and also moves to and fro endwise in a measuring chamber
approximately but not exactly of cylindrical form.
The meters described in former Patents granted to me belong to this class.
Heretofore the measuring chamber of such meters has been made in separate
parts afterwards fixed together, that is to say the chamber has been bored out and
then there has been fixed within it the abutment carrier with the parts in
connection therewith.
In other words the parts of the interior of the measuring chamber which
encroach on the true cylindrical form have been separately made and inserted after
the chamber is bored.
I form the measuring chamber in one piece and work it to the form required;
this enables me to obtain a truer interior form and a stronger construction also it
lessens the cost of manufacture.
With these ends in view I have modified the shape of the meter and I have
designed machines for its production.
The alteration in the form of the meter which admits of the measuring chamber
being bored out in one piece by machinery consists in stopping the abutment
carrier short of the bottom of the measuring chamber so that a tool may pass
beneath it to face the surface against which the end of the abutment flap works
and so also that the abutment carrier may be more readily slotted to receive the
joint end of the abutment flap.
The machine for fashioning the measuring chamber consists of a chuck in which
the work is held, and which is mounted on an axis or mandrel and driven as in an
ordinary lathe. In front of the chuck is a transverse bed and a saddle moveable
along the bed. The saddle carries a tool holder and this receives the tools for
boring the measuring chamber and for facing the end or bottom face. There is a
guide ring upon the exterior of the chuck corresponding to the interior form of
the chamber and in contact with the guide ring is a roller carried by an arm
projecting from the saddle. There is also upon the saddle a spring arm which
bears on the exterior of the chuck or work holder on the opposite side of the axis.
During the boring operation the guide ring operates to traverse the tool holder
upon the bed and so to produce the required deviation from the true cylindrical
form. When facing the end or bottom face the guide ring is put out of action.
The tool facing cuts beneath the abutment carrier.
The same chuck or work holder may be provided with several guide rings to
enable it to produce meter chambers of different sizes.
The centre from which the interior of the measuring chamber is worked is not
the same as that from which its outer flange requires to be turned and faced; and
again another centre is necessary for boring the hole to receive the post on which
the piston works and for turning this post to meet these requirements the chuck
or work-holder is carried in guides upon the mandrel and can be shifted in these
guides to pass from centre to centre.

page_text: The oval piston of the meter which is of vulcanite I fashion is a similar machine
with a guide ring of corresponding forms.
The piston has two surfaces which require to be formed by the machine riz.: the
external surface and the internal surface. Separate machines may be employed to
do the external and the internal work.
Dated this 20th day of A mail 1000
CARPMAEL & Co.,
Agents.
COMPLETE SPECIFICATION.
Improvements in Liquid Meters and in Machinery for Producing
the same.
1, WALTER GEORGE KENT, of 199, 200 and 201, High Holborn, in the County
of Middlesex, Manufacturer, 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 has for its object improvements in liquid meters and in machinery
for producing the same.
The class of meter to which my invention applies is that in which a piston of
oval form rotates and also moves to and fro endwise in a measuring chamber
approximately but not exactly of cylindrical form.
The meters described in former Patents granted to me belong to this class.
Heretofore the measuring chamber of such meters has been made in separate
parts afterwards fixed together, that is to say the chamber has been bored out and
then there has been fixed within it the abutment carrier with the parts in
connection therewith.
In other words the parts of the interior of the measuring chamber which
encroach on the true cylindrical form have been separately made and inserted after
the chamber is bored.
I form the measuring chamber in one piece and work it to the form required;
this enables mo to obtain a truer interior form and a stronger construction also it
lessens the cost of manufacture.
With these ends in view I have modified the shape of the meter and I have
designed machines for its production.
The alteration in the form of the meter which admits of the measuring chamber
being bored out in one piece by machinery consists in stopping the abutment
carrier short of the bottom of the measuring chamber so that
tool may pass
beneath it to face the surface against which the end of the abutment flap works
and so also that the abutment carrier may be more readily slotted to receive the
joint end of the abutment flap.
The machine for fashioning the measuring chamber consists of a chuck in which
the work is held, and which is mounted on an axis or mandrel and driven as in
an ordinary lathe. In front of the chuck is a transverse bed and a saddle
moveable along the bed. The saddle carries slides aud on these a tool holder and
this receives the tools for boring the measuring chamber and for facing the end or
bottom face. There is a guide ring upon the exterior of the chuck corresponding
to the interior form of the chamber and in contact with the guide ring is a roller
carried by an arm projecting from the saddle. There is also upon the saddle a
spring arm which bears on the exterior of the chuck or work holder on the opposite
side of the axis. During the boring operation the guide ring operates to traverse
the saddle with the tool holder upon the bed and so to produce the required
deviation from the true cylindrical form. When facing the end or bottom face the
guide ring is put out of action. The tool facing cuts beneath the abutment
carrier.
The same chuck or work holder may be provided with several guide rings to
enable it to produce meter chambers of different sizes.

page_text: n
wheel k. The wheel is driven by a worm / upon an axis parallel to the lathe axis
or mandril and driven therefrom by a belt and speed pulleys. m is the boring slide
on which is a capstan head tool upon holder m³. The boring slide can be moved
along guides on the surfacing slide by a screw n. A handle and ratchet gear is
provided for turning the screw automatically to feed the tool forward. The tool
holder m receives and holds the several tools required for the work: it can bo
turned to bring either tool to the working position and then locked by means of the
hand nut m. The chuck carries upon it a ring guide o the exterior form of which
corresponds accurately to the interior form which it is desired to impart to the walls
of the measuring chamber and to the guide ribs a' which serve to guide the
extremities of the piston. The saddle has at one of its ends an arm carrying a
roller p to bear against the guide ring o. At the other end of the suddle a bracket
is fixed and this bracket carries an axis about which an arm q' can turn freely.
This arm carries another roller q which also can be made to hear against the
periphery of the ring or flange o. ris a coiled spring fixed at one end to the axis
on which turus; at its other end it bears against the arm q. is a handle upon
the axis by which the axis can be turned and provision is also made for
clamping it.
When the machine is set to bore or fashion the sides of the measuring chamber
the handles is moved over up to a stop and there clamped and the coiled spring r
then presses strongly upon the arm q. The roller p is thereby held constantly in
contact with the guide ring o and this ring not being concentric with the mandrel
the saddle receives a movement to and fro along the bed and the tool as the
work revolves heing fed forward by the screw a produces an internal surface of the
required form.
When surfacing the bottom of the chamber and the flanges
the pressure of the spring on the army is released and the saddle is clamped to
the bed g. The surfacing gear with the parts netuating the same, is then
brought into operation to traverse the tool over the face of the work.
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!
claim is :-
1. A. liquid meter such as described with the abutment carrier and parts in con-
nection therewith in one piece with the sides or walls of the measuring chamber and
with the abutment carrier stopping short of the bottom of the chamber so that the
bottom, which also is in one piece with the walls of the chamber, may be surfaced
beneath and beyond the abutment carrier as herein set forth.
2. The machine substantially as described for fashioning the measuring chamber;
comprising a click or work holder mounted on an axis or mandrel with appliances
for adjusting the position of the centre and with a transverse bed and saddle, the
latter carrying the tool (and the necessary slides) and with a guide ring corre-
sponding in form to the interior of the measuring chamber and serving to control
the position of the saddle and tool when the interior sides or walls are being operated
upon as herein set forth.
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