Taken from Technical Instruction XXXVI Part 4
(Dated 1930)
This was prepayment type of multi-coin-collecting box
which had been standardized for use on all circuits where a
coin-collecting box is required in C.B. and
Automatic areas.
These were superseded by the
Box, Coin Collecting No. 14 circa 1936.
The Box C.C., No. 13, complete, comprises of:-
1 x Mechanism No. 13.
1 x Box, Cash, No. 5 (the containing case).
1 x Mechanism No. 13.
The Box C.C. No. 13 complete, was combined with other
apparatus to form telephones of the wall type and the following are the
Rate Book descriptions of the items required for the equipment of
circuits with prepayment coin-collecting boxes:-
C.B. Areas (1932):-
1 x Telephone No. 115 or 115A.
1 x Relay and Coil No. 29AN.
1 x Bell Set No. 1.
1 x Label No. 43A.
Automatic Areas (1932):-
1 x Telephone No. 123 or 123A.
1 x Bell Set No. 1.
1 x Dial, Automatic No. 11.
25. Telephones Nos. 115 and
123 will be fitted in
normal circumstances, and Telephones Nos. 115A and 123A when specified
on the Advice Note by the Controller, London Telephone Service, or
District Manager. The Telephones Nos. 115A and 123A differ in having
a returned coin chute trough at the bottom of the containing box (Box,
Cash No. 5) and extending along its whole width, surmounted by a plate
glass front approximately 4.5 inches in depth. These telephones are
installed in localities where fraud is found to be prevalent through
criminally inclined persons blocking up the returned coin chute with
paper, thus preventing Callers from obtaining the return of coins after
making an ineffective call, see following Paragraph, and enabling the
money to be dishonestly collected from the trough later on the removal
of the paper.
26. The chief features of the coin-collecting box
are:-
-
Except in connexion with emergency calls it requires the insertion
of the local fee before the exchange can be called, in the case of the
C.B. Exchange, while in an Automatic Area the insertion of the local fee
is necessary before any number except "0" can be dialled effectively.
-
By means of two press buttons, A and B, see Paragraphs 31-33, which
the Caller is relied upon to operate, it enables fees inserted to be
deposited if the call is effective or refunded if ineffective.
-
It permits such additional fees as may be required for Toll and
Trunk calls, or for the transmission of telegrams, to be collected and
thus enables other than local fee calls to be dealt with at Call
Offices.
-
Pennies, sixpences and shillings are accepted.
27. General Description
A description of the operation of the coin-collecting box and its
associated apparatus is given below together with instructions for
installation.
28. Illustrations
External views of complete Telephones Nos. 115 and 115A (for C.B. Areas)
and Telephones Nos. 123 and 123A (for Automatic Areas) are shown on
their respective pages and a general view of the coin-collecting box
mechanism is given in Figure 5.
Fig 5 - Mechanism No. 13
29. Coin Slots
Three coin slots marked "Penny", "Sixpence" and "Shilling" respectively
are provided on the top of the box. The size of each slot is such as to
prevent the use of coins of a larger size than that of the denomination
shown or of badly bent or misshapen coins. If a smaller coin than that
indicated is inserted in any of the slots it is thrown out by means of a
coin gauge, falls into the refund trough chute and is thus returned to
the Caller.
30. Gong Signals
In C.B. areas, all calls must be passed via the exchange operator and to
gain attention it is necessary, except in the case of emergency calls to
insert as a minimum the amount of the fee for a local call. In automatic
areas, all calls except local fee calls must be passed via the manual
switchboard of the automatic exchange where the attention of the
operator is gained by dialling 0 without the precedent insertion of a
fee. In the first case (C.B. areas) the coins which have to be inserted
in addition to the local call fee and in the second case (automatic
areas) the whole of the coins inserted to cover the call made can be
checked by gong signals as follows:-
Each penny inserted strikes a wire gong once, giving a deep toned sound,
each sixpence strikes a bell gong once, giving a high pitched sound, and
each shilling strikes the bell gong twice. The two gongs therefore give
distinctly different sounding signals, which actuate the small
Transmitter No. 21 provided in the coin-collecting box, making them
audible to the operator and thus enabling the value of the coins
inserted in the box to be checked.
31. Buttons controlling the deposit and return of
coins
After insertion, the coins are held in suspension in a pivoted container
which is controlled mechanically by two press buttons marked "A" and
"B".
32. The depression of button "A", situated in the
front of the box, causes all coins the Caller has inserted to be
deposited in the cash box and when so deposited the coins cannot be
returned. When connexion with the required number is obtained, button
"A" must be depressed before conversation can be carried on.
33. The depression of button "B", which is fitted at
the right hand side of the box, causes any coins held in suspension in
the container referred to previously to be refunded to the Caller. The
coins so returned fall into a trough in front of the C.C. box. Button
"B" is used when the number called is unobtainable, and for the recovery
of any coins inserted in the box in the event of a fault existing which
prevents the exchange from being called.
34. Capacity of coin container
The container in which the coins are held in suspension is divided into
three sections, the respective capacities of which are:-
10 Pennies.
8 Sixpences.
10 Shillings.
35. Construction of box
The Box, Cash No. 5 (the containing box), which is constructed of
pressed steel, is divided internally into two compartments. The upper
compartment accommodates the mechanism, i.e. Box C.C., No. 13, and the
lower one, which is closed by a removable bottom plate, forms a cash
box. Independent access to the two compartments is provided. Access to
the mechanism in the upper compartment is obtained by removing a
detachable front which, when in position, is fastened by a lock. Keys,
Lock J, for use therewith should be requisitioned separately and held by
the Engineering staff for maintenance purposes. In the top section
is a Jack No. 30 and a Switch, Receiver No. 2.
36. The whole of the mechanism is hinged in such a
way that it can be swung clear of the box for inspection or adjustment
or entirely withdrawn if necessary for repair or replacement.
37. The electrical connexions between the hinged
mechanism and the fixed equipment in the box are made by means of a plug
and jack.
38. The mechanical features of the box are exactly
the same for C.B. and automatic working and the mechanism, Box C.C., No.
13, used on one system is interchangeable with one used on the other
system without alteration.
39. Cash box and locks
Access to the cash box portion of the complete coin-collecting box for
the purpose of collecting deposited cash is obtained by removing the
bottom plate which is secured in position by means of a lock. For
information relative to the locks, and keys to be used and the
conditions attending their use, see Paragraphs 96 to 106.
40. Prevention of electric shocks
To avoid any danger of shock to users of Telephone No. 123 or 123A,
future supplies of these types of telephone will be provided before
issue with earthing bolts on the Transmitter Arm No. 1, the Mounting,
Dial, Automatic No. 8, and the Box, Cash No. 5. These bolts should be
wired together and should be connected to an efficient Earth. Cord
Instrument No. 222, waterproof, will be fitted instead of Cord
Instrument No. 222.
41. In the case of Telephones No. 123 already fitted
and not provided with special earthing bolts, one of the bolts securing
the Transmitter Arm No. 1, one of the Dial Mounting fixing screws and
one of the bolts securing the Box, Cash No. 5 to the backboard should be
well cleaned of enamel or other covering, wired together and connected
to an efficient Earth. Cords, Instrument No. 222 should be replaced by
Cords, Instrument No. 222, Waterproof.
42. Apparatus lay-out
The general arrangement of the apparatus and notices in telephone
cabinets and Kiosks Nos. 1, 2, 3 and 4 should be strictly in accordance
with the lay-out plans relative to C.B. and automatic areas and the
conditions specified in Technical Instructions XXXVI, Part 1.
43. Wiring
Cable E and C C n/10 should be used for all wiring between the telephone
and the associated apparatus as indicated by diagrams C.B. 1258 (N. 215)
and A.T. 1860 (N 223), and all wiring should be run on the rear of the
wallboard. Suitable holes for leading-in wires are provided on the back
of the apparatus and no wiring should appear on the face of the
Wallboard.
44. Fixing
The telephone should be fixed to
the wallboard by means of the four bolts and nuts issued with the instrument.
45. Lighting
Good lighting is essential in Call Offices fitted with prepayment coin-collecting boxes and any steps practicable should be
taken to obtain satisfactory conditions in this respect.
46. Details of standard lighting arrangements in cabinets and
the various kiosks and instructions regarding the maintenance of fittings
are given in Circular Power 46, Monthly List, June 1930.
47. Tests
A schedule of tests to prove the correct operation of the
coin box mechanism is given on Sheet 3 of diagrams C.B. 1258 (N 215)
and A.T. 1860 (N 223) respectively.
48. With the exception of the test of gong and chutes
for silver coins all necessary tests can be made by means of the present
(penny) tokens. The occasions on which tests of the sixpenny and
shilling chutes and gong are necessary are expected to be very few and
tokens equivalent to these coins are not therefore supplied. When such
tests are necessary, however, it is anticipated that maintenance
officers will have suitable coins available and by swinging the
mechanism forward when making the tests, any risk of coins being
deposited m the cash box can be avoided.
49. Maintenance
Minor repairs such as the adjustment
of spring contacts, escapement, pendulum, balance, counter weight and
the clearance of obstructions from the chutes can be carried out readily
with the mechanism in situ.
50. The escapement should be adjusted by means of its
pendulum bob so that Springs Nos. 8 and 9 remain open for a period of
about seven seconds when the "B" button is depressed.
51, The operation of the balance-arm is controlled by
means of a counter weight and the adjustment should be such that the arm
is not actuated by a weight less than that of two pennies.
52. Where repairs of a more extensive character are
necessary the mechanism should be replaced under maintenance exchange.
53. Fault Records
In order that uniformity of
practice in the recording of faults may prevail, the descriptions of the
various parts of the mechanism given on diagram Misc. 2673, see figure
5, should be used. The entry on the fault card showing the nature and
cause of the fault should clearly indicate the part of the coin box on
which the defect occurred.
54. Emergency call arrangements in kiosks accessible
from the public highway in C.B. areas
In order that the exchange may be called in respect of
emergency
calls, e.g. Fire, Police and Ambulance, without the insertion of the
usual fee being necessary where a prepayment type of coin-collecting box
is fitted in a kiosk accessible from the public highway, on a Call
Office circuit connected to a C.B. exchange, the following arrangements
at the Call Office end should be made in accordance with diagram C.B.
1258 (N 215), Sheets 4 and 5, Plan No. 5A, C.B. 1398 (N 1154), Plan
No. 5E or C.B. 1391 (N 1156), Plan, No. 5F.
55. A Press Button G, brass, with watertight barrel
associated with an earth. connected 50-ohms resistance bobbin should
be fitted in the kiosk and joined up in such a way that the earthed
resistance is normally disconnected but is connected directly to the "B" line when the button is depressed.
56. Resistance bobbins of the values specified on the
relevant diagram should also be provided, and inserted in the circuit in
the positions indicated, for the purpose of preventing the operation of
a marginal relay at the exchange when a normal call is made. They should
be located as indicated by the relevant diagram.
57. The press button should be fitted immediately
above the Telephone No. 115 or 115A and a Label No. 161 should be fitted
behind the fixing plate.
A
Label No. 37, White, engraved EMERGENCY CALL (engraving 8B, 1, filling red)
should also be fitted immediately above the press button.
58. Frame Notice No. 18 for the accommodation of an
Emergency Notice T403G, should be fitted immediately above the emergency
call label as shown on the relevant standard apparatus and notice
lay-out plans specified in Technical Instructions XXXVI, Part I.
59. The exchange name and telephone number, only,
should be displayed on a (rd S.S. 506 placed in the Frame Notice No. 1
immediately below the transmitter arm. The Card S.S. 506 will replace
the Instruction Card T.E. 254 normally fitted in the Frame.
60. Cards S.S. 506 and T. 403G should be obtained and
fitted as laid down in T.I. XXXVI, Part I.
61. Certain modifications are also necessary at C.B.
exchanges when prepayment coin-collecting boxes are installed whether,
or not, emergency call facilities are provided as in the ease of Kiosks
accessible from the public highway, see
Paragraphs 54 to 60 and 62 to 70.
62. Modifications of C.B. Exchange Equipment
The circuit arrangements required at a C.B. exchange for working in
connexion with circuits having prepayment coin-collecting boxes
associated with them are shown by Diagram C.B. 1241, Figs. 1-4. When
provision is made for emergency Fire, Police and Ambulance calls from a
Kiosk accessible from public highways, see Paragraphs 54 to 60, the
circuit concerned should be joined up at the exchange in accordance with
Diagram C.B. 1241 (Figs. 1 and 1A), the necessary equipment being
provided and arranged. as laid down in the mimeographed Circulars of
June 4t 1929 and August 9th 1929, entitled "Prepayment type
Coin-collecting Boxes, Emergency call facilities."
63. When the modifications indicated by Diagram C.B.
1241 have been carried out, the conditions at a C.B. exchange on the
lines concerned are as outlined in the following paragraphs 64 to 70.
64. Calling Equipment
(a) Normal case, i.e. when emergency call facilities are not provided -
The "A" line is disconnected from the cut-off relay (C.B. 1241, Fig. 1).
(b) When emergency call facilities are provided - All. the leads to the
normal calling equipment are disconnected from it and are connected
instead to a special calling equipment, the "A" line being left
disconnected (C.B. 1241, Figs. 1 and 1A).
65. "A" position cord circuit C.B. 1241, Figs. 3 and
4
The resistance spool normally fitted in the sleeve circuit of the
calling cord is replaced by a relay thus providing for the required
reversal of the exchange battery on the answering cord when the calling
plug is inserted into a jack.
66. On cord circuits having repeating coils (C.B.
1241, Fig. 2), the 83-ohm resistance spool normally fitted in the sleeve
circuit on the calling plug side is replaced by a Relay HC, shunted by a
400-ohm resistance spool, and Relays HR and HA are fitted in train with
Relay HC. The connexions of the Relay HR provide for the reversal of the
exchange battery on the answering side of the cord circuit when the
calling plug is inserted into a jack, and the method of connecting the
operator's telephone circuit to the contacts of Relay HA and HC ensures
that that circuit is temporarily disconnected during the momentary
period of battery reversal, thus minimizing the click received by the
operator when the battery reversal takes place.
67. To distinguish the modified cord circuits from
the ordinary cord circuits, the speaking and listening keys of the
former are provided with cerise coloured plug covers and key handles.
68. The modified cord circuits can be used for
answering ordinary subscribers' circuits but not for answering on
jack-ended, junction circuits.
69. For the completion of reverted calls (e.g. trunk
calls etc.), transfer lines, wired in accordance with Diagram C.B. 1415,
are required. Duplicate jacks are necessary because the cord circuit
answering plug must always be used in the Call Office line. The extra
jack permits of the plug in the transfer circuit being changed without
"clearing" at the distant end.
70. Hold Jacks
See Paragraph 85, are provided on the "A" positions as indicated by
Diagram C.B. 1241, Fig. 5.
71. Operation of circuit at a C.B. exchange
The diagrams referring are:-
Telephone No. 115 or No. 115A without emergency call facilities - C.B.
1258 (N 215).
Telephone No. 115 or No. 115A with emergency call facilities - Sheets 1
and 2. C.B. 1258 (N 215).
Exchange end, Line and Cord Circuits - Sheets 4 and 5. C.B. 1241.
72. Calling the exchange. Normal conditions
The removal of the receiver operates the usual switch-hook connexions,
but, as the Earth connected normally to the "A" line at the exchange is
disconnected at the cut-off relay, the line relay is not operated by the
telephone loop.
73. The insertion of the first penny operates a crank
arm immediately below the coin slots, which breaks contacts 11 and 12
and makes contacts 10 and 11. The penny, after rolling down an inclined
chute, drops into a container and rests on a pivoted balance arm.
74. On the insertion of the second penny, which rolls
down the chute in a similar manner to the first, the combined weight of
the two coins depresses the balance-arm. The operation of the arm closes
contacts 3 and 4 and a calling signal at the exchange results. The
circuit of the line relay at the exchange is completed by Earth and
contact 3 via contact 4, one winding of the retardation coil contacts 8
and 9, switch-hook contacts, primary winding of induction coil, B line,
cut-off relay contacts, line relay and battery to Earth.
75. Calling the exchange from a kiosk by means of the
emergency press button
On the depression of the emergency button, a low resistance Earth
(50-ohms) is connected directly to the "B" line causing the operation of
marginal and line relays at the exchange. On operation, the relays lock
and an interrupted Earth is connected to the calling lamp, causing it to
flash until the answering plug is inserted.
76. Exchange answers
When the operator inserts the answering plug, the cut-off relay is
operated and battery is connected to the "B" line and Earth to the "A"
line via the cord circuit. The polarized relay, No. 194A, see diagram
C.B. 1258 (N. 215), Sheets 4 and 5, is now in circuit but, as it is
arranged to operate only with a negative battery on the "A" line, it
does not operate at this stage and consequently the telephone
transmitter (No. 1) is in circuit for speech. The coin-collecting box
transmitter (No. 21) is also in circuit in series with the line.
77. If it is found when the operator takes
particulars of the number required, that additional coins are necessary,
connexion is made to the "Hold" jack (as described later, see Paragraphs
85 and 86), while the value of the coins inserted is checked by the gong
signals.
78. Caller connected
The insertion of the calling plug into a subscriber's line or junction
jack reverses the tip and ring connexions of the answering cord so that
battery is connected to the "A" and Earth to the "B" line. The polarized
relay, No. 194A, is therefore operated and short-circuits the telephone
transmitter (No. 1).
79. When the Caller hears his correspondent, he must
press the button A. the actuation of which causes the deposit of the
coins, opens contacts 10 and 11 and closes contacts 11 and 12. The
former contacts remove the short circuit from the telephone transmitter
and the latter short-circuits the polarized relay and coin-collecting
box transmitter.
80. When the coins are deposited, the balance arm is
released and contacts 3 and 4 are opened.
81. The call can now proceed in the normal manner and
standard conditions exist for supervisory and clearing signals.
82. Ineffective Calls
If the call is ineffective, the Caller obtains the return of his coins
by pressing the "refund" button B. This operation opens contacts Wand ii
and closes contacts 11 and 12 as when button A is depressed. In
addition, contacts 8 and 9 are opened while contacts 6 and 7 are closed
and Earth is applied to the 2,000-ohm relay, No. 128 B, connected to the
"A" line, see Diagram C.B. 1258 (N. 215), which relay operates and locks
up via its own contacts, disconnecting the line and thus giving the
clearing signal at the exchange. This relay remains locked and the
clearing signal persists until the operator takes down the connexion.
83. Misuse of "refund" button and use of "Hold " jack
Should the Caller depress the "refund" button B after the operator has
answered but before the calling plug is inserted in a jack, the
2,000-ohm relay, No. 128 B, will not be operated as there is no battery
on the "A" line at the exchange. The polarized relay is also
short-circuited by contacts 11 and 12 and therefore cannot operate when
the calling plug is inserted subsequently. Unless some further
precautionary measures were taken a momentary signal only would be given
on the supervisory lamp (whilst contacts 8 and 9 are open) and the fact
that the "refund" button B had been depressed might pass undetected by
the operator.
84. To frustrate any fraudulent attempt by a Caller
to obtain a call in this way without payment, an escapement is provided
in connexion with the "refund" button which delays, for about seven
seconds, the return to normal of contacts 6, 7, 8 and 9 that are
operated when this button is depressed. When thus operated, contacts 6
and 7 connect Earth to the 2,000-ohm relay, No. 128 B connected to the
"A" line, but there being 110 battery on this line at the exchange, the
relay is not energized. Contacts 8 and 9, however, open the line circuit
and so operate the supervisory signal at the exchange for about seven
seconds. The glow of the supervisory lamp will draw the attention of the
operator to the irregularity, or if, during the seven seconds' interval,
the calling plug is inserted, thereby connecting battery to the "A"
line, the 2,000-ohm relay, No. 128B, will operate and lock up, thus
permanently disconnecting the line.
85. As a further precautionary measure, a "Hold" jack
is provided on each "A" position dealing with prepayment coin-collecting
box circuits, for use in operating any calls when it is impossible or
undesirable to connect the calling plug immediately to a subscriber's or
junction jack. The calling plug is inserted 111 the "Hold" jack and
produces the same conditions as when this plug is inserted into an
ordinary jack. Any attempt on the part of a Caller to obtain the call
without payment by securing the refundment of his money, i.e. by
pressing button B, during the interval before the required connexion is
completed is thus frustrated in a similar manner to that described in
Paragraph 82 dealing with "ineffective calls."
86. The "Hold" jack is used also while the insertion
in the coin-collecting box of any additional fees required is being
checked by the operator.
87. Automatic Exchanges
No special circuit arrangements are necessary. The provision and
segregation of switches and "0" level circuits will be carried out in
accordance with the equipment specification.
88. Operation of circuit on an automatic exchange
The diagrams referring are:-
Telephone No. 123 (or No. 123A) - A.T. 1860 (N. 223) Sheets 1 and 2.
89. Type of dial
The telephone is fitted with a Dial Automatic No. 11 to permit of the
operator being called without prepayment when 0 is dialled. This dial is
a modification of Dial Automatic No. 10, to which is added a pair of
spring contacts, Nos. 13 and 14, and a controlling cam. The cam is
mounted loosely on the main spindle of the dial and is operated by the
Switching lever but is so arranged that its operation Only takes place
when 0 is dialled.
90. Normal Conditions
The contacts Nos. 13 and 14 of the dial are in series with contacts Nos.
4 and 5 of the coin-collecting box and are normally closed, thus
providing a short circuit across the impulse springs of the dial. In
addition, the coin-collecting box transmitter (No. 21) is
short-circuited by contacts Nos. 11 and 12. In other respects the
circuit conditions are equivalent to the standard automatic telephone
and the Call Office is therefore unrestricted so far as incoming calls
are concerned.
91. The short circuit across the dial is removed by
the insertion of two pennies or, when 0 is dialled, as described later.
92. As previously stated the mechanical features of a
Box C.C. No. 13 are exactly the same whether used for C.B. or automatic
working, the circuit arrangements only being modified. No special relays
or coils are required to meet automatic conditions.
93. Unit fee calls normally completed automatically
The first penny inserted operates the crank arm fitted below the coin
slot. Consequently, contacts 11 and 12 are broken and contacts 10 and 11
are closed, thus short-circuiting the telephone transmitter (No. 1) and
removing the short circuit from the coin-collecting box transmitter (No.
21). After rolling down an inclined chute, the penny comes to rest in
the container on the pivoted balance-arm. On the insertion of the second
penny, which comes to rest in a similar manner to the first, the added
weight operates the balance-arm causing contacts 4 and 5 to open and
remove the short circuit from the impulse springs of the dial. The
Caller is now able to dial the number required. When the called number
answers, the Caller should depress button A. the actuation of which
causes the deposit of the coins, opens contacts 10 and 11, closes
contacts 11 and 12 and 4 and 5 and transfers the short circuit from the
telephone transmitter to the coin-collecting box transmitter. The
circuit having been thus restored to normal, conversation can proceed.
The connexion at the exchange is released when the receiver is returned
to the switch-hook.
94. Calls not completed automatically
The Caller dials 0 without previously inserting any coins. When the dial
is thus revolved to its full extent, the short circuit across the
impulse springs is removed by the operation of the special cam
previously referred to which opens contacts 13 and 14. The cam is so
arranged that these contacts remain open until the tenth impulse has
been completed, i.e., until the dial has returned to normal, before they
again close. The calling signal is thus given on the exchange manual
switchboard and the operator takes particulars of the call. When the
call matures, the operator requests the Caller to pay the appropriate
fee. The first coin placed in the slot breaks contacts 11 and 12 and
makes contacts 10 and 11. The coin-collecting box transmitter (No. 21)
is thus placed in circuit and enables the value of the coins inserted to
be checked by the operator in the manner already described, see
Paragraph 30. When the full fee has been collected, the Caller is
requested to press button A, the actuation of which causes the deposit
of the coins in the cash box and transfers the short circuit from the
telephone transmitter to the transmitter (No. 21) in the coin-collecting
box as previously described. The circuit having been thus restored to
normal, the call can proceed in the usual manner and standard conditions
exist for supervisory and clearing signals. No special cord circuit
conditions are required on the automatic manual switchboard.
95. Ineffective calls
If the call is ineffective, the Caller obtains the return of his coins
by pressing the refund button B. This operation opens contacts 10 and 11
and closes contacts 11 and 12, as when button A is depressed, but, in
addition, the depression of button B opens contacts 8 and 9, which
disconnects the telephone circuit. These latter contacts are so arranged
that their return to normal on the release of button B is delayed by the
escapement fitted in the coin-collecting box, which, as previously
described, is adjusted so that the contacts remain open for a
sufficiently long period, about seven seconds, to clear any connexion
completed automatically at the exchange. When calls are completed by an
operator, the depression of button B and the consequent disconnexion of
the circuit for an interval of seven seconds causes the cord circuit
supervisory lamp to glow for a corresponding period, giving a clearing
signal at the automatic manual switchboard.
The pictures below show a Telephone No. 119 which
was fitted with a Boxes, Coin Collecting No. 13. The
Telephone No. 115 was used in C.B. areas and the
Telephone No. 123 were also fitted with the same
mechanism. The coin mechanism is called a Mechanism No. 13.
Unlike later A&B coin boxes there were no active
components housed in the case, except for the switch hooks and receiver.
A separate Bellset and Transmitter had to be fitted.
The connection from the mechanism was by means of brass
pins which located on brass springs, when the mechanism was swung into
the casing.
Fitted with a Lock No. 31 (Engineering cover) and
a Lock No. 4 (Cash box cover).
Superseded by the BCC No. 14
and many of the BCC No. 13's were converted to BCC No. 14's.
Click here for more information on
the Mechanism No. 13
GEC Current Comments article 1
GEC Current
Comments article 2
Pictures
The two pictures of the Telephone
No. 119 below look like pre-production mock up as there is no wiring and the front
of the cash container is not correct. These pictures are dated 1924.
 |
 |
| Front cover removed from the Coin Box
exposing the Mechanism No.13 in position |
Front cover removed from the Coin Box
exposing the Mechanism No.13 in maintenance position |
