TELEPHONE MANUFACTURING Co. (TMC)
TMC produced the compact style telephone and the cases are exactly the same as ETL compacts. Later, TMC did start to use cases similar to the GEC type.
The case itself just contains the dial and the base plate is normally populated with the components.
TMC cases normally have two cable entry holes in the rear, which have ebonite grommets. Some cases, however, have been seen with a single cable entry. TMC also made these phones for Telephone Rental and some of these have base plates which have been found with a set of 9 holes, in a circle, under each gong (as do Ericsson compacts).
Many compacts found have a cylindrical capacitor. These capacitors were introduced in the UK circa 1955.
These phones can sometimes be dated by looking at the markings on the capacitor.
Click here for more information on compact telephones.
The information below show unknown models with unknown diagrams. Any information of these would be gratefully received.
This is a Compact made for Telephone Rentals in 1950
TMC produced this compact telephone for Telephone Rentals. They normally have no part number on the base and no number on the internal diagram.
The telephone has a basic GPO circuit with all the components in one body. These can be easily converted to work in the UK.
It has two capacitors (in the same casing), an induction coil and a bell on the base plate. In the body of the phone is an 8 way terminal array with a 6 way terminal block on the base plate. This is slightly unusual for TMC Compacts which generally do not have a terminal block on the base plate.
The base plate is stamped with 18 sounds holes and the case has elongated corners (the same as an Ericsson). See below for a picture.
The capacitor is square whereas GEC and Ericsson used oblong capacitors. These capacitors are dated.
TR markings on rear of case
Inside the case - standard GPO induction coil
Base plate showing 6 way terminal block and square capacitor
To convert to UK plug and socket use a BT line cord and wire as follows:-
Compact dated later than 1955
Note Ericsson style case
Note the induction coil is mounted on the base plate.
Note Ericsson case but it has a square edged base plate
Last revised: January 07, 2023