Improvements in Stop Indices for Pre-payment Gas Meters.
Year: 1889

page_text: Date of Application, 11th Sept., 1889-Accepted, 19th Oct., 1889
COMPLETE SPECIFICATION.
Improvements in Stop Indices for Pre-payment Gas Meters.
I, WILLIAM ANDREW MCINTOSH VALON, of the Gas Works, Rainsgate, in the
County of Kent, 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 :—
This invention consists in improvements upon one for which application for
Letters Patent No. 10,598-89 has been made, and is in part for the same object,
namely, to so construct dry gas meter indices that immediately after a certain desired
quantity of gas has passed through the meter, the index and consequently the
meter will stop, and the supply of gas to the fittings beyond will be cut off.
In order that this invention may be easily understood drawings are attached
hereto, Fig. 1 being a front elevation of the dial plate of a dry gas meter index.
Fig. 2 is a plan of the index and upper part of the meter. Fig. 3 is a side elevation
of the same, with the side plate and part of the valve box removed, and Fig. 4
shows an alternative arrangement for stopping the meter and therefore the
registration.
In carrying out this invention I make the index with a spindle A, a projecting
pin C, a disc D, with a notch shown in the drawing Fig. 3 in deep black, just the
same as described in my Specification No. 10,598 before referred to, but instead of
placing the spring F and arın or lever G as described in that specification, I now
place the spring F, and a different form of lever G behind the back plate of the
index, as will be seen on referring to the drawings attached hereto. The lever G is
pivotted at H to a support I fixed to the back plate of the index, and is pressed against
the end of the spindle A by the spring F. The upper part of the lever G is forked
as seen in Fig. 2 and fits a recess in an arın J, one end of which slides through
a hole in the back plate of the index, and the other end through a hole in the upper
part of the guide piece K. This guide piece is supported by the bar L and short
standards fixed to the top of the valve box. The sliding arin J has a cross piece M
fixed to it, and this arm carries a pin N which slides through a hole in the lower
part of K. Both the end of the arm J and the pin N therefore work through holes
in the guide K.
It will be seen from the foregoing that when the registering pointer O has reached
the same position as the adjustable pointer P, the spring F will press the end of
the spindle A and consequently the pin C into the notch, and at the same time will
cause the bar J to slide towards the back of the meter and so bring the cross
piece M into such a position that it catches the tangent screw, as the said screw
revolves, and stops both meter and index.
In the resetting of the pointer P by applying a key to the square end of the
worm spindle Q, the pin C is driven out of the notch in the disc D and the end of
the spindle A forces the lower end of the lever G so that its upper end draws forward
the cross piece M and so relieves the tangent screw, when the meter is again free
to work.
In this
In Fig. 4 will be seen an alternative arrangement for stopping the meter.
case the pin C is fixed to a disc D attached to the worm wheel, and the inclined
notch shown in deep black is formed in the clutch E, which is keyed or pinned to
the shaft or spindle A.
The remaining parts of the meter not specially described either in this specification
or in the one before referred to, are made much in the usual manner, R being the
horizontal metal partition, S the top of the valve box, T the stuffing box, U the
worin, V the upright spindle, W the tangent screw, X, X the arms, and a, a, flag
rods, while b is the inlet to the meter.

page_text: Instead of either of the foregoing arrangements being applied to the hundreds
dial, the invention may be adapted to a special dial made of any convenient size, or
it may be applied to either of the other additional dials.
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
I claim is
1. The construction of dry gas meter indices with a spring F and lever G as herein
described and shown on the drawings.
2. The arin J, cross piece M with pin N and guide piece K, all arranged as herein
described and shown on the drawings, and
3. The arrangement of pin C, disc D, and clutch E as herein described and shown
on the drawings.
Dated this 11th dow of Sentainber 1880
W. H. BENNETT,
Agent for the Applicant..