Types AC 130-140
Magneto Table Telephones (AC140 shown)
MICRO-TELEPHONE. RE 2002 (Old No. 520), resting on a cradle switch, with cord RS 7021 (Old No. 2252), flexible cable and terminal block with disc protector.
GENERATOR. 2-magnet, which rings satisfactorily through a line resistance of 12,000-15,000 ohms. The magnets of the generator also form the legs of the telephone.
RINGER. Resistance of coils 1000 ohms.
The connections are so arranged that the bell in the telephone remains silent while the generator is being operated.
Overall dimensions: 12.0 x 7.9 x 5.5 inches.
Weight, 11.7 lbs.
TYPE AC 130 is fitted with a flexible cable RS 9600 (Old No. 2150), which is connected to terminals fitted under the ebonite base-plate. The generator is fitted with a "cut-out" with a flat spring, which is effected through the longitudinal movement of the spindle.
TYPE AC 140 is fitted with a flexible cable RS 9610, which is connected to the terminals fitted on the back edge of the ebonite base. The generator is fitted with a "cut-out" with a spiral spring, which is effected through the longitudinal movement of the spindle.
Taken from the Ericsson Telephone Catalogue 1912
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