Production of Electric Light for a Certain Time.
Year: 1888

page_text: Date of Application, 7th Apr., 1888
Complete Specification Left, 31st Dec., 1888
Complete Specification Accepted, 23rd Feb., 1889
Production of Electric Light for a Certain Time.
We, DIXON HENRY DAVIES of 88 Caledonian Road, Leeds, in the County of
York, Solicitor, and JOHN MESNY TOURTEL, of 3 Princes Street, Westminster, in
the County of Middlesex, Engineer, do hereby declare the nature of this invention to
be as follows:-
In our Provisional Specification No. 8206 of 1887 we have described apparatus
such that by introducing a coin and operating a push an electric light is produced and
this light is maintained for a certain time determined by clockwork, or for such time
as the operator may remain seated.
Our present invention relates to improvements in apparatus of this kind whereby
we render its construction more simple, and its operation more certain.
Under a slit through which a coin can be introduced we provide a pivotted pocket
for the reception of the coin the bottom of this pocket being closed by a lip at the end
of a lever behind the pocket which is pivotted on the same axis with the pocket and is
pressed by a spring. A push, which is worked outside the casing containing the
mechanism, passes freely through the pocket if there is no coin it, or if there is in
it a coin too small to reach up to the push, but if the coin is of sufficient size to present
its upper part in the way of the push then on forcing in the push, the pocket and lever
are forced back and an armature, attached to the lever by a spring, is moved up to the
poles of an electro magnet. The pocket when it is thus forced back, by means of
projections on it, moves the lever of an electric switch closing the electric circuit of a
The lamp is
glow lamp and moving also a lever which winds up a clockwork spring.
thus kindled and at the same time the electro magnet having its coils in the lamp
circuit, is excited and retains the armature thus holding the lever behind the pocket.
On releasing the push, the pocket returns, but the lever behind it being held back so
that its lip no longer. closes the bottom of the pocket, the coin drops out of it into a
receptacle below. The light continues while the clock work runs down, until finally
the lever that wound up the clockwork moves hack the switch lever thus opening the

page_text: circuit, whereupon the light becomes extinguished, and the electro magnet is rendered
inert, so that it releases the armature and allows the lever behind the pocket to return,
everything being now restored to condition for a fresh operation.
Should the coin introduced be too small the push when operated does not move the
pocket but moves the lever that closes its bottom and the coin in that case drops into
a shoot opening to the outside of the casing. Should the electricity fail, the operator
by drawing out the push a little can bring the pocket away from the closing lever and
thus cause the coin to drop into the shoot by which it is delivered externally.
Instead of employing clockwork to determine the duration of the light, a spring
seat may be arranged to make a contact as described in our previous Provisional
Specification when it is pressed down by a sitter.
The light then continues as long as the sitter remains seated, but when he rises the
circuit is opened and the light is extinguished, the electro magnet also becoming inert
and the parts resuming the condition for being started afresh by introduction of a
coin.
Dated thin 7th 1
CAI 1000

page_text: Production of Electric Light for a Certain Time.
We, DIXON HENRY DAVIES, of 88 Caledonian Road, Leeds, in the County of
York, Solicitor, and JOHN MESNY TOURTEL, of 3 Princes Street, Westminster, in
the County of Middlesex, 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 :-
In our Specification No. 820687 we describe apparatus such that, by introducing a
coin and operating a push, an electric light is produced, and this light is maintained
for a certain time determined by clockwork, or for such time as the operator may
remain seated. Our present invention relates to improvements in apparatus of this
kind, whereby we render its construction more simple, and its operation more certain,
as we shall describe referring to the accompanying drawings.
Figs. 1 to 11 illustrate the apparatus arranged so that the duration of the light is
determined by clockwork, and Figs. 12 to 16 shew the arrangement such that the
duration of the light depends upon the operator remaining seated.
Figs. 1, 2, 5, 6, 9 and 10 are part vertical sections, Figs. 3, 4, 7 and 8 are plans,
and Fig. 1 is an outline elevation shewing the whole apparatus.
Figs. 1 and 3 shew the apparatus with a coin introduced and ready for operation.
Figs. 2 and 4 shew the apparatus being put into operation.
Fig. 5 shews the apparatus in operation and the coin being released into the cash
box.
Fig. 7 shews the position of the switch just before the light is automatically
extinguished.
Figs. 6 and 8 shew the machine returning a small coin, such as a halfpenny, to
the operator; Fig. 8 shewing also the clockwork by which the duration of the light is
determined.
Figs. 9 and 10 shew two different arrangements whereby the apparatus is made to
return the coin to the operator in case of failure of electricity, Fig. 9 shewing also the
clockwork.
Fig. 11 shews a front elevation of the whole apparatus with part of the casing
removed.
Figs. 12 and 13 are vertical sections of the apparatus, Figs. 14 and 15 are part
sections and Fig. 16 is a part plan of the seat, shewing the contact made by the
sitter.
The same letters are use throughout to designate similar parts in the various
figures.
As shewn in Figs. 1 to 11 there is a box divided into two compartments A
and B; A containing the mechanism and B containing an electric incandescent
lamp L. The coin is inserted through the slit B₁ in the hood shaped guard A'
and passes through the slit S, in the cover X, into a pocket D which pivotted

page_text: at E to a fixed bracket H. The bottom of the pocket D is closed by a lip Gat
the end of a lever F pivotted at E and having its flange I pressed against the
partition N by a spring J.
P is a push fitted to slide in a guide M, a square part of it p moves through
a washer M having a square hole, so that the push cannot turn.
A pin R passing through p is pressed by two flat springs Q and Q¹ keeping
the push in the position shown in Figs. 1, 3, 5, 7, 9. Two counterweights 9 9¹
tend to bring the opening of the pocket D immediately over the partition N.
When a coin w of the requisite value is introduced into the pocket D and the
push P pushed in, then the push meeting the upper part of the coin moves back
the pocket D and the lever F, and brings them 'into the position shown in Figs. 2
and 4. An armature h, which is attached to the lever F by a flat spring 9, is
thus moved up to the poles of an electromagnet t t'.
Also a projection V from the pocket D' strikes the arm of a lever U pivotted
at C and brings the lever U into the position shown in Fig. 4. This lever U and
a ratchet wheel e are fixed on the spindle C on which is free to turn a wheel D¹
that gears with the other wheels of the clockwork d. When the lever U is, as
described above, moved into the position shown in Fig. 4, the pawl fescapes the
teeth of the ratchet wheel, but a spring S₁ fastened to the spindle C is strained.
Upon the push P being released the spring S¹ turns the ratchet wheel e, and,
through the pawl f, the wheel D', and thus moves the clockwork d.
To the arm of the lever U a contact piece a is fastened by a flat spring j.
When the lever U is moved into the position shown in Fig. 4, a is brought
against a contact piece c, thus completing an electric circuit so that the current
flows through the lamp L producing the light.
The electromagnet t t, which is in the circuit of L, becomes excited and holds
by attraction the armature h which at that moment is in contact with its poles,
notwithstanding that the push P is released the lever F is held back and as the
pocket D falls back to the position shown in Fig. 5, the coin as indicated by w¹
is discharged down the shoot K.
To prevent the pocket D from swinging farther back than the position shown
in Fig. 5, the weights q q₁ are connected by a bar i which stops against a pro-
jection upon the back of the lever F.
As the clock runs down, the lever U returns slowly to its original position,
Fig. 3, and carries with it the contact piece a till it reaches a groove S cut in c
as shown in Fig. 7; then, as the lever U continues its motion the flat spring j
yields until it meets the head of the screw o whereupon a is suddenly thrown
back to its original position. The light is thus extinguished, and the magnet t t¹
becomes inert releasing the armature h and lever F, whereupon the spring J brings
these as well as the pocket D back to the position shewn in Figs. 1 and 3; the
machine being again ready for operation.
When a coin too small is introduced into the apparatus, the push P passes over
it through the opening in the pocket D without acting on the pocket, and
strikes the projection on the lever (Fig. 6) thus removing the lip G from
beneath the pocket D and allowing the coin indicated by to drop down the
shoot into a tray m from which the operator may remove it.
Should the apparatus, when operated, fail to produce a light, then the electro
magnet remains inert and thus on release of P the lip G is not removed from
beneath the pocket D which returns to its position of rest still containing the coin.
The operator may regain possession of the coin by pulling outwards the push P,
as shewn in Fig. 10 in opposition to a strong flat spring I and thus by a hook si
(which engages with a projection y on the pocket D) bringing the pocket B clear
of the lip G whereupon the coin is returned to the operator by the shoot / into
the tray m as indicated by w³.
The hooks may be dispensed with and the coin recovered by a sudden release
of P in which case the momentum of the weights 9 q¹ causes the pocket D to
swing back clear of the lip G Fig. 9 allowing the coin to descend by the shoot 1.

page_text: The lamp L may be placed in a reflector O having an opening Z in the bottom Y
of the box through which the light can reach the operator.
For that form of apparatus in which the light is supplied so long as the operator
remains seated.
Figs. 12 and 13 are vertical sections in which the mechanism is substantially
the same as that previously described, except that the clockwork is dispensed with,
that the armature is fastened directly to the lever F, and that an elongation of
the projections I on the said lever moves a switch lever a in opposition to a
spring and brings it into contact with a contact piece C. So long as the
electro magnet t is excited, the lever F is held through the armature against
its poles thus keeping the switch lever a in contact with e in opposition to the
spring K. G Figs. 14, 15 and 16, is a portion of the seat in which is fixed a
contact socket H¹; a contact pin 1'is fixed beneath a spring J¹ under the cushion K¹ of
the seat. H¹ and I are in circuit with the lamp so that a light cannot be obtained
unless the operator is seated depressing the spring J as shown in Fig. 15, and
bringing and H' into contact. Contact being thus made, then upon operating
the mechanism by means of the coin and push, the switch lever a is brought
against c, as in Fig. 13, and the light is produced. The light continues as long
as the circuit is kept closed, but, upon the operator rising, the spring J
breaks the contact between H¹ and I' and the current ceases to flow. The magnet t is
thus rendered inert, and releases the armature h on the lever F and thus allows the
spring to bring the lever a to its position of rest against the stop n as shewn in
Fig. 12. The light thus extinguished can only be renewed by the insertion of a fresh
coin and a repetition of the operation described.
In case of failure of electricity the coin is returned as already described. The lamp
may be arranged as shewn in Figs. 12 and 13, within a reflector O which has a
window Z, and is attached to an arm F1 jointed at E' so that the lamp can be placed
at a convenient angle to throw the light where required. The wires and v are
connected to the terminals of a battery or other source of electricity..
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what
we claim is :-
1. In apparatus for effecting by introduction of a coin production of electric light,
the combination of the spring push P, the pivotted coin receiving pocket D, the
lever F pivotted with the pocket and having lip G and armature ½ and the electro
magnet tt arranged and operating substantially as described.
2. The combination of the pivotted pocket D, the pawl lever U and the clockwork d,
substantially as described.
3. The combination of the pawl lever U its spring contact piece a and the curved
and grooved contact piece c, substantially as described.
4. In combination with apparatus such as is referred to in the first claim, the seat
with spring contacts substantially as described with reference to Figs. 12 to 16
inclusive.
1
L
1000
ABEL & IMRAY,
Agents for the Applicants.