|
|
Lamps No. 2
Click here for more information
Drawing - CD259.
Introduced circa 1913.
In general a No. 2 lamp with a carbon filament will have no
filament support,
but a metal filament will have a filament support.
The moulded base is coloured, to identify the rated
voltage.
EI, Telephones, General, Z5015 refers.
Length - 45mm.
Diameter - 7mm.
|
 |
|
Lamps No. 3
A 24v line lamp, short in length, for 24v exchanges.
|
|
|
Lamps No. 4
A 17v pilot lamp for meter circuits on 24v exchanges.
|
|
|
Lamps No. 5
A 24v pilot lamp for 24v exchanges.
|
|
|
Lamps No. 7
A tubular lamp, rated at 21w for S.B.C holders.
Used for supervisory purposes in exchanges.
Voltages - 22v, 40v and 50v.
Colours - Blue, green, red and white.
|
|
|
Lamps No. 8
Lamp with bayonet cap, used on Lamps, Headgear No. 2.
Originally supplied in the voltages 22v, 40v and 55v.
Later supplied at 50v, 10watt.
Click here for more information
Drawing - CD84.
Length - 54mm.
Diameter - 36mm.
|
|
|
Lamps No. 9
A Festoon style lamp, rated at 10w for Lamp, Fitting, Misc 3729, with
Opal shade.
These were used at the Dorchester Hotel and installed above doors in
the corridors. The light was operated by a button on the room
telephone set.
Voltage - 40v.
Colours - Blue, green and red.
|
|
|
Lamps No. 10
A Pear shaped lamp, rated at 40w, for use on Lamps, Alarm, Indicating
No. 1.
Voltages - 25v and 50v.
|
|
|
Lamps No. 12
Festoon style lamp with Tungsten filament, rated at 10w.
Used on Lamp, Fittings No. 1.
50 volts, 10 watts, clear, red and green.
Drawing - CD86.
Click here for more information
Length - 46mm.
Diameter - 13mm.
|
 |
|
Lamps No. 32
Pigmy sign lamp with standard bayonet cap.
50 volts, 15 watts, clear, red and green. Size - 59mm x 29mm. |
|
|
Lamps No. 42A
|
|
|
Lamps No. 49A A tubular, wire ended, lamp of 5mm diameter used
with Lamp Fitting No. 20/5A.
6 volts at 60mA.
|
|
|
|
|
|
|
|
|