Year: 1887

page_text: Date of Application, 27th Oct., 1887
Complete Specification Left, 27th July, 1888
Complete Specification Accepted, 31st Aug., 1888
I, JOSEPH JOHN TYLOR, of 2 Newgate Street, in the City of London, Civil
Engineer, do hereby declare the nature of this invention to be as follows:-
This invention relates to improvements in that class of liquid meters known as
inferential, in which the quantity of liquid, passed through a pipe in a given time, is
registered by the revolution of a wheel or fan set in motion by the stream of liquid;
and has special reference to that kind of meter for which a Patent was granted to me
bearing date the 3rd September 1885 No. 10,443. The object of the present invention
is to provide means whereby the range of correct registration of meters of this kind is
increased beyond what can be obtained by any form of brake heretofore used, and to
increase the sensitiveness of such meters.
My invention consists, firstly, in forming the internal surface of the chamber, in
which the registering fan or wheel revolves, with a series of corrugations or alternate
projections or fillets and hollows or grooves which hold or retain the outer layer or
film of water in the fan chamber in such manner that it has a retarding, restraining,
or brake-like effect upon the revolving wheel or fan, whereby the latter is prevented
from moving at a speed which is inconsistent with the quantity of water passing
through the meter. The corrugations, projections, or fillets, and the, hollows or
grooves, may be formed on the cylindrical sides of the fan chamber, or on the bottom
thereof, or on both sides and bottom, and they may be placed in a vertical or radial
direction, or at any suitable angle with reference to the direction of the current or
stream of water.
Any of the known brake arrangements may be used in combination with tho
aforesaid corrugated or grooved fan chamber, as for example, the arrangement
described in the Specification of my aforesaid Patent No. 10,443, A.D. 1885, and
such known brake arrangement may be fixed in or over the fan chamber, or be made
adjustable therein or thereon, either by opening the meter for that purpose, or from
the outside without opening or taking the ineter to pieces.

page_text: My invention consists, secondly, in forming the roots or parts of the blades of the
registering fan or wheel, near the axis, so that each such root or part slopes alternately
in an opposite direction. By this means the tendency of the fan or wheel to be raised
off its toe-piece, or to be pressed down thereon by reason of all the roots, or parts of
the blades near the axis, being sloped in one direction, is obviated. The registering
fan or wheel so formed with the roots, or parts of the blades near the axis, sloped in
alternate directions is preferably provided with an oil cup, a steel pointed toe-piece
and a steel bearing plate as shown in the Drawing annexed to the Specification of my
aforesaid Patent No. 10,443.
By these improved arrangements, I am enabled to produce meters in which the
range of correct registration is considerably greater than in meters provided only with
the brakes, or other adjusting devices, heretofore in use, and at the same time, meters
constructed in accordance with my present invention are more sensitive to the action
of small currents of liquid, and therefore measure the passage of small quantities more
accurately than meters constructed as heretofore.
J. J. TYLOR.
Per W. H. Beck,
115, Cannon Street, London,
Agent.

page_text: t
Improvements in Liquid Meters.
I, JOSEPH JOHN TYLOR, of 2 Newgate Street, in the City of London, Civil
Engineer, 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, reference being had to the accompanying sheet of Drawings and
to the letters and Figures marked thereon, that is to say :-
This invention rolates to improvements in that class of liquid meters known as
inferential in which the quantity of liquid, passed through a pipe in a given time, is
registered by the revolution of a wheel or fan set in motion by the stream of liquid,
and has special reference to that kind of meter for which a Patent was granted to me
bearing date the 3rd September 1885 No. 10,443. The object of the present invention
is to provide means whereby the range of correct registration of meters of this kind is
increased beyond what can be obtained by any form of brake heretofore used, and to
increase the sensitiveness of such meters.
In the Drawings hereto annexed, Figures 1 and 2 are vertical sectional elevations
of meter cases constructed in accordance with the specification of my beforementioned
Patent with my present improvements applied thereto; Figure 3 is a transverse
section of same on line 1-1 of Figures 1 and 2.
My invention consists, firstly, in forming the internal surface of the circular
chamber D, in which the registering fan or wheel F revolves, with a series of
corrugations or alternate projections or fillets P, and hollows or grooves Q, which hold
or retain the outer layer or film of water or other liquid in the fan chamber D, in such
manner that it has a retarding, restraining or brake-like effect upon the revolving
wheel or fan F, whereby the latter is prevented from moving at a speed which is
inconsistent with the quantity of water passing through the meter. The corrugations,
projections or fillets and the hollows or grooves may be formed on the cylindrical sides
of the fan chamber D as shown at P, Q, in Figures 1, 2 and 3, or on the bottom
thereof as shown at P¹, Q1 in those Figures, or on both sides and bottom; and they
may be placed in a vertical or radial direction or at any suitable angle with reference
to the direction of the current or stream of water or other liquid.
Meters constructed with circular fan chambers having a number of projections or
fillets and hollows or grooves on the surface thereof, as above described, and illustrated
in the Drawings, enable the current of liquid passing through the meter to act
centrally upon the measuring fan, whereby the side action and consequent wear and
tear on the toe pieces occuring in meters with oval cases having only two brake
surfaces is obviated; the brake action due to such projections and hollows being equal
at every point of the circumference. The measuring fans of meters so constructed
may also be run much faster and with less noise than those of meters of the ordinary
construction. This increased speed of measuring fan gives a greater range of correct
registration.

page_text: Any of the known brake arrangements may be used in combination with the
aforesaid corrugated or grooved fan chamber, as for example, the arrangement
described in the specification of my aforesaid Patent No. 10,443, A.D. 1885, and such
known brake arrangement may be fixed in or over the fan chamber, or be made
adjustable therein or thereon either by opening the meter for that purpose, or by
means of suitable and well known appliances from the outside without opening or
taking the meter to pieces.
My invention consists, secondly, in forming the roots, or parts of the registering
fan or wheel F near the axis E so that each such root or part slopes alternately in an
opposite direction as shown clearly in Figure 4 in which it will be seen that the
root of each blade F slopes in a direction opposite to that of each adjacent blade.
By this means the tendency of the fan or wheel F to be raised off its toe piece, or to
be pressed down thereon by reason of all the roots, or parts of the blades near the axis,
being sloped in one direction, is obviated.
By these improved arrangements I am enabled to produce meters in which the
range of correct registration is considerably greater than in meters provided only with
the brakes or other adjusting devices heretofore in use, and at the same time, meters
constructed in accordance with my present invention are more sensitive to the action
of small currents of liquid, and therefore measure the passage of small quantities more
accurately than meters constructed as heretofore.
Having now particularly described and ascertained the nature of my said invention
and in what manner the same is to be performed, I would have it understood that I
am aware that it is not novel to employ rough surfaces or one or more projecting
plates or obstructions in the interior of the fan case of a meter for the purpose of
producing a regulating or counter current opposed to the currents caused by the
revolution of the wheel or fan, and I make no claim generally to such devices, but I
declare that what I do claim is :-
First-In a liquid meter, constructing the internal surface of the registering fan or
wheel chamber with alternating projections or fillets P or P¹ and hollows or grooves
or Q', as hereinbefore described, and illustrated in Figures 1, 2 and 3 of the Drawings
hereto annexed, and for the purposes specified.
Second In a liquid meter, constructing the registering fan or wheel with the
roots, or parts of the blades near the axis sloping alternately in opposite directions as
herein before described, and illustrated in Figure 4 of the Drawings hereto annexed.
Dated this 97th day of Lul.. 1000