Year: 1887

page_text: .
Communications.
I, JOHN GILL, of 88 Mornington Street, Keighley, in the County of York,
Engineer, do hereby declare the nature of this invention and in what manner the
same is to be performed, to he particularly described and ascertained in and by the
following statement :—
The object of this invention is the construction of a simple apparatus by which
a person paying into a receiving box a coin, token, or voucher of a determined value,
is enabled to ring or signal to a telephonic exchange or other distant station as often
as is required until the attendant at the exchange or other station answers by ringing
the
gongs of the speakers instrument or signalling to him; and consists in combining
with a telephonic instrument, a lever which is operated when a coin, token, or voucher
of the required size and weight is placed through an opening communicating with the
said lever, which releases a sliding bar so that the speaker may move the same and
complete the electric circuit for ringing or signalling at the central exchange or
distant station as often as required, until the telephone is raised from the ordinary
lever for speaking, when the coin, token, or voucher is deposited into a receiving box
for collection.
In order to fully describe the invention, I will explain the same by referring to the
annexed sheet of drawings, in which Fig. 1 represents the front view of a telephonic
instrument as arranged according to my invention, the front cover or door being
removed. Fig. 2 is a plan with the receiver and box cover removed. Fig. 3, a side
view of the instrument. Fig. 4, a detail of the lever for the reception of the coins,
tokens or vouchers, and Fig. 5 a detail of the bar for completing the electrical circuit
for ringing or signalling to the exchange or distant station.
Any well known electrical current may be used for ringing or signalling to the
exchange or distant station, but the drawings show the invention as in combination
with a magnetic generator.
The generator A, and transmitter B, are of the ordinary construction, and connected
to the central. exchange or distant station in the usual manner but, according to this
arrangement of the instrument, the speaker cannot ring or signal to the exchange or
distant station, until he has deposited the required consideration into the box.

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On a person wishing to speak through the telephone, he must first place a coin,
token or voucher of the determined value through a slit in the box cover D, such slit
opening into the inclined conductor E, which conveys the coin, token or voucher into
the recessed lever F; which being inclined, allows it to roll to the opposite
end where it is stopped by a projection N of lever N; and by the weight of the coin,
token or voucher, the said lever is moved on its supporting pin to the position as shewn
by detail Fig. 4, where the coin, token or voucher C stops as shewn until liberated as
hereafter described.
When the recessed lever F is operated in the manner described, the curved
projection G at one end of the said lever, is raised out of the recess H, in the sliding
bar J, thereby liberating the same; and thus allowing it to be moved by the speaker by
the knob J, on the outside of the box. By pressing at the said knob, the bar is moved
towards the back of the box, pushing the spring K, against the contact L, by which
the circuit with the exchange or distant station is switched through the ringing
generator A by means of line L', so that on turning the ordinary handle and wheel M,
the signal is made to the exchange or distant station, and on the speaker receiving
a signal in return, he removes the ordinary telephone from the end of lever N to speak:
the lever rising as in ordinary instruments, allows the coin, token or voucher to drop
clear of projection N', and through an opening into the collecting box P; the recessed
lever F, going back to its normal position, and thereby reswitching the circuit with the
exchange or distant station through the speaking apparatus, and locking the sliding
bar, by the projection G entering the recess H, until another coin, token or voucher
is deposited through the before mentioned slit into the recessed lever F, when the
operation is repeated.
According to this arrangement, the circuit is always complete between the speakers
instrument and that at the exchange or distance station, but the speaker cannot ring
up or signal to the exchange or distance station, until he has first removed the
projection G out of the recess H in the manner described.
Having now particularly described and ascertained the nature of this invention, and
in what manner the same is to be performed, I declare that what I claim is:
1. The means employed for the liberation of the sliding bar J, by the deposit of a
coin, token or voucher in the box, substantially in the manner described.
2. The locking of the sliding bar J by the projection G substantially in the manner
shewn and described.
3. The sliding bar J combined with the spring K substantially in the manner and
for the purpose shewn and described.
4. The combination of the recessed lever F with the sliding bar J and lever N with
its projection N' substantially in the manner and for the purpose described.