Improvements in or connected with Apparatus for Measuring or Recording the Quantity of Water or other Fluid Passing Over a Notch or Sill or Through a Channel.
Year: 1895

page_text: Date of Application, 24th Dec., 1895
Complete Specification Left, 22nd Sept., 1896-Accepted, 31st Oct., 1896
TRUVIDIONAD SIBUITATION.
Improvements in or connected with Apparatus for Measuring or
Recording the Quantity of Water or other Fluid Passing Over a
Notch or Sill or Through a Channel.
I, DANIEL LEAN HUTCHISON, of 6, Bellhaven Terrace, Kelvinside, in the
County of Glasgow, Civil Engineer, do hereby declare the nature of this invention
to be as follows, that is to say:
My said invention relates to apparatus of the kind described in my Patent
Specification No. 9481 of 1893. By means of the said apparatus a continuous
record is traced on a drum turned continuously and uniformly by clockwork or
otherwise, the ordinates parallel to the drum's axis, of the line traced representing
the quantity of water passing per minute, or other time unit at the time that each
point of the line is being marked. The line thus traced shows the variations, if
any, in the quantities passing during the time that the line is being traced, and
the total quantity passing in a day or other period can be derived by calculation
from the fine. It is, however, more convenient in some cases for the total quantity
to be shown by the instrument without requiring calculation; and by my present
invention I provide apparatus for thus showing total quantities, and which
apparatus may be substituted for the tracing apparatus of my former instrument,
or it may be combined therewith.
In carrying out my invention according to one modification, a cam turned by a
float and which is of the kind used in my former instrument, acts through a small
antifriction roller on a small frame guided to move vertically and preferably
partly counterbalanced. The small frame carries a narrow-edged wheel, which is
by a weight or light spring kept in contact with the face of a disk fixed on a
horizontal axis. The disk is driven continuously and uniformly by clockwork or
otherwise, and it makes the wheel turn with a speed proportional to its distance
from the centre of the disk. An increase in the quantity of water passing, causes
the wheel to move further from the centre of the disk and vice versa. The wheel
is on a spindle which by means of a worm on it actuates counting mechanism
arranged to show on dials as in ordinary meter counting mechanism the numbers of
revolutions made by the wheel, or the total quantities of water to which those
revolutions correspond.
Dated this Twenty-third day of December 1895.
EDMUND HUNT,
Applicant's Agent.

page_text: Improvements in or connected with Apparatus for Measuring or
Recording the Quantity of Water or other Fluid Passing Over a
Notch or Sill or Through a Channel.
I, DAVID LEAN HUTCHISON, of 6, Bellhaven Terrace, Kelvinside, in the
County of Glasgow, 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, that is to say :-
f
My said invention relates to apparatus of the kind described in my Patent
Specification No. 9481 of 1893. By means of the said apparatus a continuous
record is traced on a drum turned continuously and uniformly by clockwork or
otherwise, the ordinates parallel to the drums axis, of the line traced representing
the quantity of water passing per minute, or other time unit at the time that each
point of the line is being marked. The line thus traced shows the variations, if
any, in the quantities passing during the time that the line is being traced, and the
total quantity passing in a day or other period can be derived, by calculation, from
the line. It is, however, more convenient in some cases, for the total quantity to
be shown by the instrument without requiring calculation; and by my present
invention I provide apparatus for thus showing total quantities, and which
apparatus may be substituted for the tracing apparatus of my former instrument,
or it may be combined therewith.
The apparatus consists essentially of a float and a cam, similar to those of my
former instrument arranged to move vertically a frame carrying a wheel which is
driven by having its rim in contact with the face of a revolving disk, and which
actuates meter counting mechanism. Variations in the quantity of water passing
cause variations in the speed of the wheel and such variations are registered by the
meter counting mechanism.
And in order that my said invention and the manner of performing the same
may be properly understood I hereunto append a sheet of explanatory drawings,
to be hereinafter referred to and showing my improved apparatus.
Figure, 1, of the drawings is a front elevation of the apparatus with a part of a
casing enclosing it removed.
Figure, 2, is a transverse vertical section of the apparatus.
In these drawings the same reference letters are used to mark the same or like
parts wherever they are repeated.
As shown in the drawings a cam, A, turned by a float and which is of the kind
used in my former instrument, acts through a small antifriction roller, B, on a
small frame, C, capable of sliding vertically on guide rods, D, fixed to the cam
frame, E, and the casing, G, of the apparatus. The guide rods, D, are joined at
their upper ends by a crosshead, H, on which is a bracket, J, carrying a pulley, K,
over which passes a cord, L, connected at its ends to the frame, C, and a balance
weight, M. The small frame, C, carries a narrow-edged wheel, N, the wheel
being on a spindle, P, loose in an auxiliary frame, Q, hinged at its upper part to
the frame, and having attached to its lower end a weight, R, sufficient to keep
the wheel rim in contact with the face of a disk, S, fixed upon a horizontal axis, T.
Instead of the weight, R, a spring suitably arranged might be employed. The
disk, S, is driven continuously and uniformly by clockwork or otherwise, and it
makes the wheel, N, turn with a speed proportional to its distance from the centre
of the disk. An increase in the quantity of the water passing causes the wheel, N,
to move further from the centre of the disk, S, and vice versa. A worm, V, on the
wheel spindle, P, actuates counting mechanism arranged to show on dials, W, as
in ordinary meter counting mechanism, the number of revolutions made by the

page_text: wheel, N, or the total quantities of water to which those revolutions correspond.
The counting mechanism is carried on the frame, C.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :
In or connected with apparatus for measuring or recording the quantity of water
or other fluid passing over a notch or sill or through a channel, a float and cam of
the kind described in my Patent Specification No. 9481 of 1893, arranged to move
vertically a frame carrying a wheel which is driven by a disk turned by clock-
work, and which actuates meter counting mechanism substantially as hereinbefore
described.
Dated this Twenty-first day of September 1896.
EDMUND HUNT,
Applicant's Agent.