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» MONOPHONE «   ( 1937 )


Have a look at an OLDER (1920) VERSION

ROTARY DIAL TELEPHONE    » M O N O P H O N E «    Model 40     (1937)
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                            AUTOMATIC ELECTRIC COMPANY, CHICAGO / USA

This  beautiful bakelite telephone has a  build-in ringer.  It needed
maintenance: Cleaning !!!  Some cables and connections were broken or
corroded;  the ringer was not connected right and had to be adjusted.

The LETTERS ON THE DIALER are for  MEMORIZING TELEPHONE NUMBERS ...
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      1             4 = G H I     7 = P R S     0 = Operator
      2 = A B C     5 = J K L     8 = T U V
      3 = D E F     6 = M N O     9 = W X Y

R E M A R K S   T O   R E S T O R A T I O N  ...
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                         HOW TO REPAIR THE OLD COIL-CORD CONNECTIONS:

For flexibility, every  "ONE"  of the 3 wires consist of many threads
of thin wires,  wound around cotton strings  and there are more plain
cotton strings for durability. There is no way to solder these wires.
Cut the damaged cable away.  Remove 2" of the outer  and  1/2" of the
inner insulation.  Carefully separate  the  "wire strings"  from the
plain cotton strings.  Cut the  cotton strings away and fold the wire
strings back parallel to their insulation.  Than press it in the OLD,
UNFOLDED & CLEANED metal hook connector to have the electric contact.

      Have a look at an NEWER (1967) VERSION

                    Historical Remarks ...
impressum:
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© C.HAMANN     http://public.beuth-hochschule.de/~hamann     06/05/09