Improved Price Changer Mechanism for use with Coin Freed Gas Meters.
Year: 1897

page_text: Date of Application, 5th May, 1897
Complete Specification Left, 5th Feb., 1898-Accepted, 2nd Apr., 1898
PROVISIONAL SPECIFICATION.
Improved Price Changer Mechanism for use with Coin Freed
Gas Meters.
We, RICHARD THOMAS GLOVER and JOHN GEORGE GLOVER, of the Firm Thomas
Glover and Co., Ld., 214 to 222, St. John Street, Clerkenwell, London, Gas Meter
Manufacturers, do hereby declare the nature of this invention to be as follows:-
--
This invention relates to an improved construction of adjustable price changer
mechanism and consists of a worm and long pinion mounted in bearings and to
which an end motion may be imparted by a lever or other suitable contrivance
after the insertion of a coin.
The thread of said worm gears with a pinion or worm that is in connection with
the meter and valve mechanism and the long pinion engages with another wheel
which is idly mounted upon a suitable support.
The worn and long pinion in one piece or separately mounted on a spindle are
slidable endwise as before mentioned, and the amount of said endwise movement
is regulated by the adjustment of a limiting stop to cause or allow the meter to
deliver any given number of cubic feet, or fractional part of a cubic foot before
the valve closes under the action of the meter and valve mechanism.
By the return movement of the coin actuated mechanism, the wheel into which
the long pinion is geared is rotated by the coin lever or other coin actuating con-
trivance which turns the worm and returns it to its normal position by the screw-
action of its thread in the 'teeth of the pinion of the meter and valve mechanism
which therefore acts as a nut to return the worm to its starting position for opera-
tion by the insertion of another coin.
Thus it will be seen there are two different characters of movement effected
by the coin mechanism, that is to say, on the forward movement after the inser-
tion of a coin the worm and long pinion is slid along and the worm acting as
a rack rotates the meter mechanism pinion a given distance to open the valve
and the return movement of coin mechanism, such as for the insertion of a fresh
coin rotates the idle wheel and operates the screw and leng pinion to return it to
the starting position without affecting the meter mechanism.
T
1
1
1007
H. GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said Richard Thomas Glover and John George Glover.
COMPLETE SPECIFICATION
Improved Price Changer Mechanism for use with Coin Freed
Gas Meters,
We, RICHARD THOMAS GLOVER and JOHN GEORGE GLOVER, of the Firm Thomas
Glover and Co., Ld., 214 to 222, St. John Street, Clerkenwell, London, Gas Meter
[Price 8d l

page_text: Manufacturers, 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 relates to an improved construction of adjustable price changer
mechanism and consists of a worm and long pinion mounted in bearings and to
which an end motion may be imparted by a lever or other suitable contrivance
after the insertion of a coin.
'
'
The thread of said worm gears with a pinion or worm that is in connection with
the meter and valve mechanism, and the long pinion engages with another wheel
which is idly mounted upon a suitable support.
The worm and long pinion in one piece or separately mounted on a spindle are
slidable endwise as before mentioned, and the amount of said endwise movement
is regulated by the adjustment of a limiting stop to cause or allow the meter to
deliver any given number of cubic feet, or fractional part of a cubic foot before
the valve cioses under the action of the meter and valve mechanism.
By the return movement of the coin actuated mechanism, the wheel into which
the long pinion is geared is rotated by the coin lever or other coin actuating con-
trivance which turns the worm and returns it to its normal position by the screw
action of its thread in the teeth of the pinion of the meter and valve mechanism
which therefore acts as a nut to return the worm to its starting position for opera-
tion by the insertion of another coin.
The invention is particularly represented in the annexed drawings in which
Figure is a plan of a coin freed gas meter, but having the top removed, with
our present invention fitted thereto."
Figure 2 a front elevation of the same. Figure a side elevation.
of
The invention as herein referred to consists of a price changer .c., an apparatus
consisting of a worm A on a rod B which is free to be slid end on in a bearing G
under the action of a lever D pivotted at E, to which lever D the other end
the rod B is connected and held by a ball or other head G and by which said rod
has a swing or pendulous motion, say, to the distance, as indicated by the dotted
lines at Figure 2 when moved by the lip II of the appliance I acting on the coin
resting in the coin rest M fitted outside the casing and connected to the appliance I
by the pivot J.
The lower part of the pendulous lever D is formed of two prongs L, L, at a
distance apart, thereby leaving a gap between them but are connected at the
bottom by a coin rest M for receiving a coin passed through a slot in the front
of the casing, the lever being at a sufficient angle for its rest to receive the coin
when moved the necessary distance for that purpose, there being a shutter not
shown connected to the stem 1 to close the slot except when its slot coincides with
the slot in the casing. N is a double faced lip of the stem I and one lip P acts
as a discharger of the coin from the cradle or rest at the commencement of the
return motion of the lever D, the lip Q coming to bear against the back of one of
the prongs L to force the lever I back when the handle or knob K is reversed and
so cause the shutter slot to uncover the slot in the casing for the insertion of a
fresh coin.
The forward throw of the lever I slides the rod B along in the bearing C until
it bears against the stop R, this being adjustable in the groove of the plate S and
affixable by the nut T according to the quantity of gas to be consumed for the
value of each inserted coin, the variations or changes can be effected by uncover-
ing a sealed plate from the front of the casing when and how desired.
During the forward sliding action of the rod B, the worm A causes the pinion U
to rotate and this being on the shaft V of the worm W ensures the rotation of the
pinion X to effect the opening movement of the gas inlet valve Y in the manner
described in the Specification of our previous Patent No. 22830 of 1894 and there-
fore needs no further reference to it in this description although it is only shown
in the drawings as an example of a coin slot meter mechanism to which our pre-
sent invention can be adopted.

page_text: The worio rod B has its fore end toothed as a long pinion Z and during the
forward travel of the lever D, said teeth slide in the teeth of the idle wheel a with-
out imparting rotation to said idle wheel a by reason of the pawl bon the lever D
riding over the teeth but during the reverse travel of the lever D the pawl b
engages the teeth of the idle wheel a and forces it round on its axle pin c, conse-
quently the long pinion Z becomes rotated and with it the worm A, the pinion U
remaining stationary and not affecting the other appliances within the meter
casing.
From the foregoing, it will be understood that there are two different characters
of movement effected by the coin mechanism, that is to say, on the forward move-
ment after the insertion of a coin the worm A and long pinion Z is slid along and
the worm acting as a rack rotates the meter mechanism pinion U a given distance
to open the valve Y and the return movement of coin mechanism such as for the
insertion of a fresh coin rotates the idle wheel a and operates the screw A and
long pinion Z to return it to the starting position without affecting the meter
mechanism.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed we declare that what we
claim is:-
1. A coin freed gas meter price changer, consisting of the appliances
marked A, Z, D, a in combination and as means for operating the valve opening
mechanism of such a meter in the manner specified and substantially as repre
sented in the annexed drawings.
2. The particular arrangement of appliances constituting the operable parts of
a price changer affixable to a coin freed gas meter in the manner shown and
operating in the manner and for the purposes referred to in the foregoing speci-
fication.
The 5th day of February 1898.
H. GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said Richard Thomas Glover and John George Glover.