Improvements in and relating to Prepayment Gas Meters.
Year: 1897

page_text: Improvements in and relating to Prepayment Gas Meters.
I, JOHN ANDERSON, of 5, Hazelbank Terrace, in the City and County of Edin-
burgh, Gas Meter Maker, do hereby declare the nature of my invention to be as
follows:-
This invention has reference to improvements in and relating to coin-freed or
prepayment automatic working gas meters.
According to these improvements a spur pinion is mounted on a spindle con-
nected to the coin turning barrel, and gears into a spur wheel on a boss or sleeve
mounted loose on a parallel spindle. A bevel wheel is also mounted on this sleeve,
and a bevel wheel is mounted on a radial stud or spindle connected to and pro-
jecting out at right angles to aforesaid spindle, and gears into this wheel and
also into another bevel wheel termed a secondary bevel wheel on a sleeve mounted
loose on the same spindle as the first named bevel wheel.
As the coin turning barrel rotates after the insertion of each coin, the spur
pinion turns the spur wheel and the bevel wheel on the same sleeve turns the
bevel wheel on the stud at right angles and the parallel spindle is thus corre-
spondingly turned, and a pin on the latter works into a groove or clutch on the
spindle of gas controlling valve and lifts and opens the latter to pass gas to
meter. A toothed wheel is mounted on the same boss as the secondary bevel
wheel and gears into a worm on a spindle connected through wheel gearing to
the ordinary mechanism of meter.
As prepaid gas is being consumed the worm and worm wheel are actuated by
the ordinary mechanism of meter and the secondary bevel wheel acts on the wheel
at right angles and turns the spindle in the opposite direction to the first bevel
wheel, and so acts on and closes the valve when all the prepaid gas has been con-
sumed.
A pointer is mounted on the end of the parallel spindle to indicate the number
of prepaid coins for which gas has still to be supplied, and a tilting lever is
operated on by a pin on this spindle to close or obstruct the coin slit when the
maximum number of coins have been inserted.
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1907
Improvements in and relating to Prepayment Gas Meters.
I, JOHN ANDERSON, of New Grange Works, Gorgie Road, in the City and County
f Edinburgh, Gas Meter Maker, do hereby declare the nature of my invention
Price 81

page_text: 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 ;—
This invention has reference to improvements in and relating to coin-freed or
prepayment automatic working gas meters.
And in order that my said invention and the manner of carrying same into
practice may be properly understood I have hereunto appended a sheet of
explanatory drawings in which Figure 1 is a plan view and Figure 2 a detached
detail view, of the mechanism for operating the gas controlling valve in accord-
ance with my improvements.
Referring to these drawings:-
According to these improvements a spur pinion A² is mounted on a spindle A¹
connected to the coin turning barrel A, and gears into a spur wheel B2 on a boss
or sleeve B mounted loose on a parallel spindle B. A bevel wheel B3 is also
mounted on this sleeve B¹, and a bevel wheel C is mounted on a radial stud or
spindle C connected to a boss C on the shaft B and carrying a spur wheel C and
gears into this wheel B³ and also into another bevel wheel D¹ termed a secondary
bevel wheel on a sleeve D mounted loose on the same spindle Bas the first named
bevel wheel B³.
As the coin turning barrel A rotates after the insertion of each coin, the spur
pinion A turns the spur wheel B2 and the bevel wheel 133 on the same sleeve
turns the bevel wheel C on the stud C¹ at right angles and the parallel spindle
is thus correspondingly turned and the spur wheel C on which the radial spindle C¹
is carried gears into a spur pinion d on a screw threaded continuation of the
spindle of gas controlling valve and traverses and opens the latter to pass gas
to. meter. A toothed wheel E is mounted on the same boss D) as the secondary
bevel wheel D¹ and gears into a worm E¹ on a spindle E connected through worm
and wheel gearing G G to the ordinary mechanism of meter. The spur pinion d
on the screw spindle d² of valve spindle d' is formed with an internal screw which
works said screw on the extension of valve spindle for the purpose specified.
As prepaid gas is being consumed the worm E' and worm wheel E are actuated
by the ordinary mechanism of meter, and the secondary bevel wheel D¹ acts on
the wheel Cat right angles and turns the spindle B in the opposite direction to
the, first bevel wheel 13 and so acts on and closes the valve when all the prepaid
gas has been consumed.
A pointer is mounted on the end of the parallel spindle B to indicate the
number of prepaid coins for which gas has still to be supplied, and a tilting lever B
is operated on by a pin B5 on this spindle B to close or obstruct the coin slit when
the maximum number of coins have been inserted.
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:-
In prepayment gas meters, the arrangement in combination of spindles and
spur and bevel gearing for operating the gas controlling valve, substantially as
herein described in reference to and shown in the accompanying drawings.
Dotad 1 101
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1000
IAAT
KINNITANIA
W. R. M. THOMSON & Co.,
96, Buchanan Street, Glasgow, Agents.
W. R. M. THOMSON & Co.,
96, Buchanan Street, Glasgow, Agents.