Improvements in Change Tills.
Year: 1898

page_text: Improvements in Change Tills.
We, WILLIAM DOMAN, Commission Agent, of 129, Cheapside, E.C., THOMAS
MICHAEL ROOKE, Journalist, of 347, Camden Road, London, N.W., and FREDERICK
EDWARD COE, of 27, Bouverie Street, E.C., do hereby declare the nature of this
invention to be as follows:-
Our invention relates to mechanism whereby a shopman, on selling goods to
a customer and receiving from him coins amounting to a higher value than the
price of the goods, is enabled at once and without calculation to give the right
change.
For this purpose we provide a set of receptacles one for each denomination
of coin, such as a farthing or penny a shilling up to a sovereign. In con-
nection with each of these receptacles there is a part, which on inserting a received
coin is moved so as to turn a cylinder through a portion of a revolution pro-
portional to the value of the coin. On the cylinder studs or teeth are suitably
arranged relatively to parts moved by keys, there being one key for each
coin and each multiple of coins up to the next higher denomination. The
shopman touches such of these keys as correspond to the price of the purchase
and then on operating an actuating key moves parts which, as governed by
the studs or teeth on the cylinder extrude coins from the coin receptacles so
as to make up the required change. If for instance the price of the purchase
were 5/-2 and a sovereign were given by the customer, the shopman having
put the sovereign into its receptacle, on touching the key for 5/- and the key
for 2 and then the actuating key, would cause 14/- 10° the proper change, to be
extruded from the receptacles.
Dated this 10th day of August 1898
ABEL & IMRAY,
Agents for the Applicants.
Improvements in Change Tills.
We, WILLIAM DOMAN, Commission Agent, of 129, Cheapside, E.C., THOMAS
MICHAEL ROOKE, Journalist, of 347, Camden Road, London, N.W., and FREDERICK
EDWARD COE, of 27, Bouverie Street, E.C., 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:-
:-
Our invention relates to mechanism whereby a shopman, on selling goods to
a customer and receiving from him coins amounting to a higher value than the
[Price S1

page_text: price of the goods, is enabled at once and without calculation to give the right
change.
For this purpose we provide a set of receptacles one for each denomination
of coin within a limited range such as a half penny to a shilling. In con-
nection with each of these receptacles there is a part, which on inserting a received
coin is moved so as to turn a cylinder through a portion of a revolution pro-
portional to the value of the coin. On the cylinder studs or teeth are suitably
arranged relatively to parts moved by keys, there being one key for each
coin and each multiple of coins up to the next higher denomination. The
shopman touches such of these keys as correspond to the price of the purchase
and then on operating an actuating key moves parts which, as governed by
the studs or teeth on the cylinder extrude coins from the coin receptacles so
as to make up the required change. If for instance the price of the purchase
were 10 pence and a shilling were given by the customer, the shopman having
put the shilling into its receptacle, on touching the key for 10d. and the key
for and then the actuating key, would cause one penny and a halfpenny
the proper change, to be extruded from the receptacles.
Fig. 1 of the accompanying drawings is a vertical section of apparatus for
operating as above set forth.
Fig. 2 is a front view of part of the cylinder and its driving ratchets.
Fig. 3 is a part front view of the coin slides and receptacles under them.
Figs. 4, 5, 6 and 7 are part plans of the coin slides shewing them in different
positions.
The same reference letters are employed to denote the same parts in the
different figures.
a is one of a row of receptacles, one for each different denomination of coin,
arranged at one end of the machine, and glass fronted so that their contents
can be seen.
Above each receptacle is fitted a slide 6 into a recess of which is placed a
tendered coin c.
Should this be too small the slide cannot be pushed in because a spring hook d
catches a projection e from the slide. But, should the coin be of the right
size the lever of the hook d is pressed aside by it allowing the slide to be pushed
in against a spring f, the coin passing down a shoot into the receptacle a below.
When the slide 6 is pushed in, it moves a lever g in opposition to a spring at its
lower end, and by this movement a ratchet toothed segment h turns partly round
a ratchet toothed pinion which extends the whole length of the row of levers g
and by means of gearing ; partly turns a cylinder k in one direction.
The operator presses down spring keys for coins making up the amount of
purchase and these by means of ratchet toothed segments m turn another ratchet
pinion which is on the same axis with i but is oppositely toothed. By the
movements of the keys the cylinder is thus turned backwards. By means
of an arm o on each lever g a rod carrying a tablet p is raised, so that the amount
tendered is seen through glass in the upper part of the machine. The tablet p
is held up by a hook engaging in a spring q. In like manner when the keys
are depressed a tablet r is raised shewing the amount of the purchase and this
is also similarly held up. The operator finally depresses a single keys and by
means of a lever on which the cylinder is mounted pushes the cylinders
against slides u at the bottom of the receptacles a. The cylinder has holes or
deep recesses in it which are presented towards the slides ; wherever there is
a hole or recess, the slide facing it is not moved but the other slides are moved
and eject coins from the receptacles into a trough v. As the cylinder k was turned
by the levers g a distance proportional to the value of the coins tendered, and
as it was turned back by the keys a distance proportional to the value of the
goods purchased, its final position is dependent on the difference between these
values, that is to say the amount of change to be given, and this amount is by
the forward motion of the cylinder delivered into the trough . By the move-

page_text: ment of the key s acting on a lever w, a plate carrying the springs q is moved
forwards releasing the rods of the tablets and which thereupon drop out of
sight. A spring brake prevents the cylinder from overrunning; this is released
by an arm projecting from wc and thereupon a spring plunger y acting upon a
heart cam on the axis of k brings back the cylinder to zero. A totalising
counter may be worked by a wheel engaging the gear wheel on the ratchet
pinions and u.
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. The herein described method of effecting delivery of change representing
the excess of a value tendered over a value purchased by causing a cylinder to
turn in the one direction a distance proportional to the amount tendered, then
to turn in the opposite direction a distance proportional to the amount of purchase
thus bringing it to a position where it presents on one side solid or unperforated
parts corresponding to the amount of change, and finally moving it laterally so
that these solid parts act on slides causing them to extrude from receptacles
coins equivalent to the change.
2. A change till arranged and operating substantially as described with
reference to the drawings.
3. In combination with a set of inserting slides and receptacles for different
denominations of coins, a cylinder turned proportionally in the one direction
by the coin slides, a set of purchase keys arranged to turn the cylinder propor-
tionally in the opposite direction and a change key adapted to move the cylinder
laterally to operate extruding slides, substantially as described.
4. In combination with the operating parts referred to in the preceding claim a
set of tablets to shew the amount tendered, and a set of tablets to shew the amount
purchased, arranged and operating substantially as described.
Dated this 12th day of June 1899.
ABEL & IMRAY,
Agents for the Applicants.