Twin Box Ericssons
These were not a major part of Ericssons
range; in fact there is no record of Ericssons ever manufacturing a complete unit
themselves. They did, however, rebuild many Bell/Western Electric phones with
their own parts in Europe. At this point the phone would be classed as an Ericsson. They
also sold replacement parts which were used to update older phones. See the Component
chapter for further details. They also made a complete "top
box" for twin box phones , mostly for sale in the United States but known in Europe as well. This area needs further investigation.
Twin box phones were a U.S. design, made necessary by their larger less efficient
generators and transmitters and bulky wet cell batteries. They were made and sold in
Europe by the Bell Telephone Manufacturing Company and the Consolidated company,
but few survive intact. The Ericsson rebuilds are more common. Ericsson parts
were also used by many other manufacturers. In Australia, they were widely used
as replacements by the State administrations, the PMG, and private suppliers.
The phones are also found with electrical or telephone company nameplates on them.
Ericsson records show that their representative, C. A. Fahlstedt, had been selling
phones and components in Sydney as early as the 1890s. Fahlstedts were replaced
as agents in the early 1900s by Hellstrom Dunn & Co. and James Paton in Sydney,
Bartrams in Melbourne, and J Ferguson in Fremantle.
twin box phones to fall into three main groups:
Bell lookalikes : These
models were Bell/Western Electric designs, overhauled with Ericsson components
by Ericssons or others. Typically they will have the Ericsson replacement transmitter
and OST receiver, but they will retain the Western Electric spur switchhook, bells,
and 3-bar generator. They were used by firms like the National Telephone Company,
KTAS and JYDSK. National also used a very early Bell 3-box model.
Distance Phones; such as those used by the state railways in Australia, and the
New Zealand Post Office. These have a wider battery box to house more cells ,
giving better performance on long lines. Again, they are Western Electric models
which have been refitted with the more reliable Ericsson parts. These phones appear
to have been locally repaired rather than Ericsson-built, and so they should still
be called Western Electric or, perhaps more appropriately, PMG.
States models; these were not built by Ericssons, but by other firms using marked
Ericsson parts. A number of such firms have been identified. Their catalogue illustrations
may show twin box phones with Ericsson logos. Ericssons appears to have built
top boxes in the U.S. but the records are sparse and ambiguous. This area needs
further investigation. U.S. phones may have parts marked L M Ericsson -
Standard of the World or L M Ericsson Buffalo . Some manufacturers
seem to have used the Ericsson name to suggest the higher quality of their phones
using the LME parts.
To Twin Box Phones
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