IMPROVEMENTS IN APPARATUS FOR MEASURING THE PASSAGE OR FLOW OF LIQUIDS
Year: 1867

page_text: LETTERS PATENT to. Thomas Walker and Thomas Ferdinand Walker,
both of Birmingham, in the County of Warwick, Engineers, for the
Invention of "IMPROVEMENTS IN APPARATUS FOR MEASURING THE PASSAGE
OR FLOW OF LIQUIDS."
Sealed the 6th September 1867, and dated the 13th March 1867.
PROVISIONAL SPECIFICATION left by the said Thomas Walker and
Thomas Ferdinand Walker at the Office of the Commissioners of
Patents, with their Petition, on the 18th March 1867.
We, THOMAS WALKER and THOMAS FERDINAND WALKER, both of Birming-
ham, in the County of Warwick, Engineers, do hereby declare the nature of
the said Invention for "IMPROVEMENTS IN APPARATUS POR MEASURING THE
PASSAGE OR FLOW OF LIQUIDS," to be as follows:-
The improvements relate to means for actuating the valve motion for
changing the direction of flow of the liquid into and from the measuring
chambers. For this purpose an àrm or prolongation from the valve is pro-
vided with a wedge-formed surface or with double inclines, upon which a stud
or roller is caused to travel alternately in opposite directions, and in so doing
at each time of passing the centre or junction of or part between the two
inclines to effect change of position of the valve and in the direction of flow
of the liquid. This stud or roller is carried by an arm and spring connection

page_text: to enable it to follow the wedge-form course or the inclines, and this arm
has the requisite motion given to it in the movement of the diaphragm or
piston dividing the measuring chambers by a rod or connection from such
diaphragm or piston actuating a lever which is also connected to the arm
carrying the stud or roller. The connection between the lever and the arm
is adjustable to afford facility for regulating time of change of position of the
valve or the direction of flow of the liquid. In place of spring pressure being
applied to the arm with the stud or roller a weight may be used. The upper
part of the wedge or the junction of or the upper surface between the double
inclines may be formed by the application of a roller or rollers. Stops are
applied to regulate the extent of motion of the valve.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Thomas Walker and Thomas Ferdinand Walker in the
Great Seal Patent Office on the 13th September 1867.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, THOMAS
WALKER and THOMAS FERDINAND WALKER, both of Birmingham, in the
County of Warwick, Engineers, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Thirteenth day of March, in the year of our Lord
One thousand eight hundred and sixty-seven, in the thirtieth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto us, the
said Thomas Walker and Thomas Ferdinand Walker, Her special licence
that we, the said Thomas Walker and Thomas Ferdinand Walker, our
executors, administrators, and assigns, or such others as we, the said Thomas
Walker and Thomas Ferdinand Walker, 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 APPARATUS FOR MEASURING THE PASSAGE OR
FLOW OF LIQUIDS," upon the condition (amongst others) that we, the said
Thomas Walker and Thomas Ferdinand Walker, our executors or admini-
strators, by an instrument in writing under our or their hands and seals, or
under the hand and seal of one of us or them, 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 Seal. Patent

page_text: pall p to work the ratchet o, the ratchet o being detained by a stop or detent q
weighted at its end. Within the parallel frame is a frame r which receives
the piston rod b¹, such frame r rocking on two pins s, 8, which move in
portions cut away in the parallel frame 1, this arrangement ensuring the
correct action of the piston rod. 6 and 63 indicate the screw and nut on the
top of the piston rod, 61 and 62 a loose collar on the said screw; these
arrangements being for the purpose of raising or lowering the nut so as to
adjust the length of the stroke of the piston. t is a weighted lever working
on the fulcrum pin u, which at one end is supported in the frame f and at the
other end in the standard v, such standard likewise supporting one end of the
arbor or pin w of the crank h and of the counterpoise lever k, or that lever
which is acted upon by the piston rod; this weight carries a friction roller on
a pin y, which roller acts upon the wedge-formed surface or double inclines z
affixed to the axis of the counterpoise lever k, so as to move with that lever.
B is a carrier or pair of arms by which the motion of the parts is com-
municated to the registering wheelwork. The arrows show the direction of
the liquid in one position of the valve acting to move the piston and rod until
the screw at top of the piston rod comes in contact with the end of the
loose frame r, thus lifting this frame and the counterpoise lever k, which by
the wedge or double incline plane z acts on the friction roller of the weighted
lever or hammer t, so as to raise it till the roller has reached the apex of the
wedge or double incline, when such roller falls down the other side of the
wedge or double incline and the lever or hammer t falls, and by falling the
valve becomes reversed by the action of the crank h inside the slotted
lever . A is a stop piece on which the hammer may fall. We prefer india-
rubber or some elastic substance for this purpose. Instead of using the
arrangements shown by the Drawings described, the wedge or double
inclined plane z may be on the weighted lever t, in which case the friction
roller would be carried by the counterpoise lever k, or an additional pulley
or roller might be used in the place of the wedge z or other combinations of
the counterpoise lever and weighted lever may be adopted. The motion
to the index may be given from the axis w or otherwise.
Having thus described our Invention and means which we adopt in
carrying the same into effect, we would have it understood that we do not
confine ourselves to the precise arrangements of parts shown and described, as
these may be varied without departing from the peculiar character of the
Invention, but what we claim in regard to our said Invention is, the actuating
the valve motion so as to alter the direction of flow of the liquid for the
purposes described by inclined or roller surfaces actuated by a stud or another

page_text: roller borne upon by spring or weight pressure and actuated by lever motion
from a piston or diaphragm.
Also we claim the adaptation or combination of means or apparatus for
measuring the passage or flow of liquids as shown and described.
In witness whereof, I, the said Thomas Walker, have hereunto set my
hand and seal, this Twelfth day of September, in the year of our Lord
One thousand eight hundred and sixty-seven.
THOS. WALKER. (L.B.)