COMPACTS and GECOPHONES


This style of telephone originated circa 1931.  This coincided with the introduction of Bakelite as a flexible moulding material and the Siemens Brothers company producing the pyramid style telephone, which the BPO adopted.

These telephones were called different names, were produced in different models, had different numbers and were made by a number of  manufactures.  In many instances the telephones had no model identification markings on them, but Ericsson always have a number of the base, whilst GEC and TMC generally had none.  They are sometimes called "compacts" but GEC called their model the "Gecophone" and many people call them all "Gecophones", no matter who made them!

GEC produced a number of variants but these were mostly standard telephones.  Ericsson, on the other hand, decided to adopt the compact case for many diverse models which included standard sets but also call and reply, battery, sub-master and railway variants.

Three manufacturers made almost identical "pyramid" style compact telephones: Ericsson, GEC and TMC (TMC made telephones for Telephone Rentals [TR]).  The actual pyramid-shaped body mouldings may well have been made in the same factory; certainly early GEC Gecophone cases are more or less identical to early TMC cases, except that the GEC ones have GEC lettering inside the case.  Ericsson bought some Bakelite mouldings from TMC, which is why many Ericsson clones of the Gecophone have cradles marked TE.  The Ericsson case was deeper on the corners whilst the GEC version had straight lower edges.  But some early Ericsson cases also had flat edges (picture from BPO archives dated 1931).

The base plates of these telephones differed but early Ericsson clones of the Gecophone had base plates that shared some design features of the early TMC phones of this type.  Ericsson clones of the Gecophone made during WW2 have ringer coils that look identical to the first GEC ringer coils.  They have an Ericsson N part number painted on them but they were almost certainly made in Coventry by GEC.

The Ericsson compact was originally supplied with a BPO Dial No. 8 (rather than the Dial No. 10), but both GEC and Ericsson fitted Dials No. 10 with small dial centre labels on many phones.  The handset was the standard BPO Telephone No.164 type but originally used an inset microphone of Ericsson's own design.

Both manufacturers used Mazak (aluminium alloy) castings for the combined terminal block and switch hook pin shaft on the early compacts, but these were soon made in Bakelite.

Somehow the Ericsson designers found room for a full-size ringer and bell gongs within the moulding, which had radiused slots at the bottom to allow the sound to escape.  The gongs are fitted at an upright angle to allow them to fit in the casing.  GEC used miniature curved bell gongs whilst TMC used barrel shaped bell gongs.

Some people confuse these telephones with similar Gecophones but the differences are fairly apparent.  The Ericsson model has a different case with deeper corners, to let out more sound from the ringer and the base plate did not reach the outside edges of the case.  GEC cases had straight bottom edges to the case and a base plate that covered the complete base of the phone, whilst TMC generally used the Ericsson style case, moving to a straight edged case in the 1950's.  The Ericsson case generally has one cord entry hole but two holes have been seen, whilst early GEC models have one cord entry hole with later models having a hole in the case and a semicircular opening between the case and the base for a cable entry ferrule.  TMC had two cord entry holes horizontally next to each other.

All Ericsson models had proper "stag's antler" cradles whereas GEC Gecophones only used this type until 1948, when they changed to a stubby design which was supposed to be damage free.

For line cord termination the Ericsson telephones generally had a curve shaped Bakelite terminal block on the base plate, whilst GEC used a Paxolin plate, mounted on upstands, positioned next to the bell ringer initially and then above the ringer.  TMC connected directly onto the terminals fitted within the main case as the base plate was normally fully loaded with components.

Ericsson also made telephones for Telephone Rentals (TR) and Telematic.  Some of the TR phones used a 2 way handset cord with an Electro-Magnetic receiver, which meant there was no induction coil and the line was polarity conscious.  These were probably the Ericsson N1010B model which has 18 sound holes in the base plate.

Ericsson manufactured, Telephone Rental model with no induction coil

TMC did not make its own dials and bought their dials from STC (manufacturer code W) so the dial should be marked with a W.  The capacitor should be marked TMC.  Dials and components on Ericsson phones would normally have an N prefixed part number.

The TMC later case is very similar to that of the GEC Gecophone (no cutaway along the lower edge) but with a proper "stag’s antlers" style cradle, rather than the stubby GEC design.  The base plate will probably have no markings and painted black.  They have a small square wire gauze grille about 2” x 1½", covering the slots that let the bell sound out.  The Telephone Rentals variant they made will have a TR logo on the handset and probably a TR dial label.

It appears that the same TMC ‘innards’ were used to refurbish older telephones as the chassis is also found labelled as a "Conversion Set for PAX instruments Code SS2597 TMC S55680".  The induction coil is identical with the BPO No. 27.  Surplus stocks of these assemblies were sold off by J Bull (Electrical) Ltd during the 1980s and to confuse people further, some have been fitted to Gecophone bodies as well.

The Paster diagram found inside these telephones will be prefixed with an "S" for TMC, "N" for Ericsson and "KS" for GEC.  Some GEC models have the letters DRG followed by numbers and these relate to drawing numbers.

Identification of the maker can be simple, with the model number being more difficult.  Dating can be difficult, because unlike the GPO who dated and marked all their equipment, much of the privately provided equipment was poorly marked or even unmarked.

Make and model can be found from the identifier table below and dates may be found on the capacitor, under the rim of the dial and on the transmitter.  If no dates are evident then the model production dates can be helpful.

Gents & Co. produced intercom telephones called "Interphones".  These were based on Gecophone parts, mainly the case, base plate, handset and some components.  The handsets on these telephones may have the manufacturers markings obliterated by grinding out - generally in a very rough manner.  These telephones had a rotary switch or press buttons to call other extensions.

 

Compact Quick Identifier
 

  Ericsson (ETL) GEC TMC
Case markings "Ericsson" on rear of case Inside the front of case
the letters "GEC" and
"GEC" on rear of case
None
Bottom Edge of case Corners deeper Straight Deeper & Straight
Handset markings ETL GECOPHONE
or G.E.C.
TMC or TR
Switch hooks Large antlers Large or short antlers Large antlers
Cable entry hole Single hole in
rear of case
Single or Semicircular hole or
Two holes one above the other
Two holes side by side
 in rear of case
Telephone ID marks N prefix
plus figures
on external face of base plate
K, ST or TEL prefix
plus figures or nothing
on external face of base plate
S prefix
plus figures or nothing
on external face of base plate
Diagram N prefix plus figures KS or DRG prefix plus figures S prefix plus figures
Bell gongs Large curved Miniature curved Barrel shaped
Bell gong fixings Two nuts on each gong Hex set screws Large slotted screws
Induction Coil Fitted in case Fitted in case Fitted on Base plate
Base Plate terminal block Bakelite
Generally curved in shape
Paxolin None
Cords always terminate in the case
Dial markings N prefix plus figures 104G
Plus "C" and the date
Marked with a W
Possibly marked 4004 as well
Base plate - Shape Base plate is shaped
Edges do not meet casing
Covers the base completely Covers the base completely or shaped
Base plate - Openings No holes or 18 round holes
 in  base plate
Round holes in base plate
Sometimes mesh covered
Oblong slots in base plate
covered with mesh

 


Ericsson
Introduced around the same time as the GEC Gecophone (1930/1931), Ericsson seems to have moved away from the compact to the 300 type telephone when the 300 type started production around 1938.  No compact telephones are shown in any catalogue printed after 1946 and it must also be noted that the Ericsson compact was never updated or new variants introduced after 1936.  Ericsson also produced cases for TMC and it appears that TMC changed cases to the GEC type circa 1950.

Ericsson produced a multitude of models and like GEC included tropicalised variants.  Ericson tropicalised variants had the part number suffixed with the letter "T".

The table below gives identifying features of all the known variants.  Model and diagram numbers all start with the prefix N.  The table below allows identification by the label number and if the diagram is not on the web site, then please enquire.

Ericsson Quick Identifier

Model No. Terminal Blocks Switch hook Contacts Induction Coil Bell Diagram Date Diagram No.
             
N1010 (Auto)
N1380 (CB)
Straight with 7 terminals, marked TR, R, T, 1, 2, 3 and 4.
On the base plate is an oblong, 4 way terminal block marked L1, L2, C and B.
18 holes in base plate.
2 x Make 6 terminal.
Terminal 5 not connected
Yes
 
March 1931 N13502
             
N1010 MOD (Auto)
N1380 MOD (CB)
Straight with 7 terminals, marked TR, R, T, 1, 2, 3 and 4.
No components on the base plate.
Used with an external bellset.
2 x Make 6 terminal.
Terminal 5 not connected.
No Bell or capacitor April 1931 N14275
             
N14357 (Auto) Straight with 7 terminals, marked TR, R, T, 1, 2, 3 and 4.
Used as an extension with a N1010 or N14443.
2 x Make 6 terminal.
Terminal 5 not connected.
No Bell or capacitor August 1931 N14387
             
N14443 (Auto)
With 1 button on case
Straight with 7 terminals, marked TR, R, T, 1, 2, 3 and 4.
On the base plate is an oblong, 4 way terminal block marked 1, 2, 3 and 4.
Used as an main with a N14357.
2 x Make 6 terminal.
Terminal 5 not connected.
Yes June 1931 N14442
             
N2180 (Dial)
N8420 (CB)
Straight with 7 terminals, marked TR, R, T, 1, 2, 3 and 4.
On the base plate are two 4 way terminal blocks (curved on earlier telephones with oblong shaped later).
Convertible telephone.
1 x Make and 1 x Change-over 6 terminal.
Terminal 5 may not be connected.
Yes December 1932 N14320
N14321
             
N20089 (Auto) Straight with 7 terminals, marked TR, R, T, 1, 2, 3 and 4.
On the base plate is a 4 terminal curved terminal block, a Retard Coil and a Capacitor.
Intercom telephone side station.
2 x Make 6 terminal.
Terminal 5 may not be connected.
No Bell December 1931 N14952
             
N20129 (Auto)
With 1 press button on case
Straight with 7 terminals, marked TR, R, T, 1, 2, 3 and 4.
On the base plate a 4 terminal curved terminal block.
Main telephone used with N20130 as the extension.
2 x Make 6 terminal.
Terminal 5 not connected.
Yes December 1931 N15305
             
N20130 (Auto)
 
Straight with 7 terminals, marked TR, R, T, 1, 2, 3 and 4.
On the base plate is a 4 terminal curved terminal block.
Extension telephone for use with N20129.
2 x Make 6 terminal.
Terminal 5 not connected.
No Bell.
DC Buzzer instead
December 1931 N15306
             
N20129A (Auto)
With 1 press button on case
Straight with 7 terminals, marked TR, R, T, 1, 2, 3 and 4.
On the base plate is a 4 terminal curved terminal block.
For use with Preference services.
2 x Make 6 terminal.
Terminal 5 not connected.
Yes February 1932 N15455
             
N20129B (Auto)
With 2 press buttons on case
Straight with 7 terminals, marked TR, R, T, 1, 2, 3 and 4.
On the base plate is a 4 terminal curved terminal block.
2 x Make 6 terminal.
Terminal 5 not connected.
Bell February 1932 N15456
            N15477
N20138 (CB) Straight with 7 terminals, marked TR, R, T, 1, 2, 3 and 4.
On the base plate is a 4 terminal curved terminal block.
No dial.
1 x Make, 1 x Change-over and 1 x Break 6 terminal.
Terminal 5 not connected.
No Bell.
DC Buzzer instead
March 1932  
             
N20234 (Battery)
With 1 press button in dial black plate
Straight with 7 terminals, marked TR, R, T, 1, 2, 3 and 4.
On the base plate is a 4 terminal curved terminal block marked ZE and MC.
1 x Make and 1 x Change-over 6 terminal.
Terminal 5 and 6 not connected.
DC Bell August 1933 N16949
             
N20237 (Battery)
With 1 press button
Straight with 7 terminals, marked TR, R, T, 1, 2, 3 and 4.
On the base plate is a 4 terminal curved terminal block marked C, C, B and B.  There is also a 2 way and way terminal block on the base plate as well.
1 x Make and 1 x Change-over 6 terminal.
Terminal 5 and 6 not connected.
DC Bell June 1933 N17010
             
N1590 (Call and Reply).
With 1 press button
Straight with 7 terminals, marked TR, R, T, 1, 2, 3 and 4.
On the base plate is a 4 terminal curved terminal block marked 1, 2, B and B.
2 x Make None DC Bell or Buzzer November 1933 N17293
             
N1590A mod
(Call and Reply)
With 1 press button
Straight with 7 terminals, marked TR, R, T, 1, 2, 3 and 4.
On the base plate a 4 terminal curved terminal block marked 1, 2, B and B.
Transmitter and Receiver in series.
Electro-magnetic reciver.
1 x Make and 1 x Change-over None DC Bell or Buzzer October 1933 N17992
             
N1010B (Auto) Straight with 6 terminals, marked 1 to 6.
On the base plate is a 4 terminal curved terminal block, marked A+, B- and EB.
No induction coil.
Electro-magnetic receiver and Spool 100 ohm Resistor fitted.
Line is polarity conscious.
18 holes in Base plate.
2 x Make which are connected in parallel None.
Handset cord only has two wires.
Yes July 1934 N18835
             
N20405 (Auto) L shaped and similar to the BPO 232 with 8 terminals, marked 1 to 8.
On the base plate are two 4 terminal curved terminal blocks. These are both marked 1, 2, 3 and 4.
No induction coil.
Electro-magnetic receiver
Line is polarity conscious.
1 x Change-over and 1 x make (Make is not connected) None.
Handset cord only has two wires.
No Bell.
Relay instead
September 1934 N19477
             
N1010 (Auto)
N1380 (CB)
L shaped and similar to the BPO 232 with 8 terminals, marked 1 to 8.
On the base plate is a 4 terminal curved terminal block.
2 x Make 6 terminal.  Terminal 5 not connected. Yes April 1935 N19995
             
N1592 (Call and Reply) L shaped and similar to the BPO 232 with 8 terminals, marked 1 to 8. 1 x Make, 1 x Break and 1 x Change-over None No April 1935 N50623
             
N1590A and N1591A (Call and Reply)
1 press button
L shaped and similar to the BPO 232 with 8 terminals, marked 1 to 8.
On the base plate is a 4 terminal curved terminal block, marked 1, 2, B and B.
2 x Make None DC Bell or Buzzer September 1935 N50759
             
N20234 (Battery Ringing) L shaped and similar to the BPO 232 with 8 terminals, marked 1 to 8.
On the base plate is a 4 terminal curved terminal block, marked Z, E, M & C.
1 x Break and 1 x Change-over None DC Bell December
1935
N50817
             
N20259 (Operators) L shaped and similar to the BPO 232 with 8 terminals, marked 1 to 8.
There are no components in this telephone.
4 way handset cord.
2 x Make None No February 1936 N52239
             
N20416 Compact with lamp and switch on front.
Used with a loudspeaking unit, the microphone of which is located behind the telephone dial.
         
             
N20543 (table)
N20544 (wall)
L shaped and similar to the BPO 232 with 8 terminals, marked 1 to 8.
On the base plate are two, 4 terminal, curved terminal blocks, each marked 1, 2, 3 and 4.
2 x Make and 1 x Change-over 6 terminal.
Terminal 5 not connected.
No Bell.
Relay instead
March 1936 N52263
             
N1380A mod (Auto)
 
L shaped and similar to the BPO 232 with 8 terminals, marked 1 to 8.
On the base plate are two, 4 terminal, curved terminal blocks, each marked 1, 2, 3 and 4.
Two way handset cord.
Indicator lamp.
1 x Make and 1 x Change-over None No Bell.
Relay and lamp instead
August 1936 N52614
             
N1380 Mod (CB) L shaped and similar to the BPO 232 with 8 terminals, marked 1 to 8.
On the base plate is a 4 terminal curved terminal block, marked L1, L2, C and B.
2 x Make 6 terminal.
Terminal 5 not connected.
No August 1936 N52615

 

GEC
GEC produced two styles of the compact Gecophone, standard and tropicalised, in a multitude of models.  The Gecophone was the original compact telephone and easily identified as it is a one piece telephone with a handset microphone of the spittoon type.  All GEC Gecophones had cases with straight edges and a base plate that covered the bottom of the phone completely.

Introduced circa 1931 GEC produced a standard Gecophone that had an old fashioned style ringer (which was a size reduced Bell No. 1A) and because of the ringers size the base plate terminal board was fitted, sideways, next the ringer.  A Capacitor was fitted to the base plate and the telephone case housed an Induction Coil.  All the mouldings were Bakelite.  There was one cable entry in the rear of the case and the base plate had two large holes to allow the sound of the bells to be heard at a greater volume.

In 1933 a model was produced that was called a "convertible telephone" which was a local battery telephone with a two winding Induction Coil and a dial blank plate.  The capacitor was then fixed in place with a metal strap and the bell ringer much reduced in size.  The base plate then had eight holes to allow the ringer to be heard.  When exchanges changed over to the Automatic system these telephones could be converted by replacing the induction coil for an ASTIC version and installing a dial.  These telephones can be easily identified as they have switch hook contact sets comprising of one make and one changeover, whilst most Gecophones have a contact set comprising of two make contact sets.

As well as the "convertible", GEC also updated the original Gecophone.  The main change being a superior Induction Coil which had enhanced ASTIC qualities, the capacitor was held in place with a strap, the bell ringer was reduced in size, the line cord now entered the phone via a ferrule in the base plate and the Bellset terminal board was positioned above the bell ringer.  The terminal block in the 1931 models was fitted to one side of the bell ringer and the line cord entered the phone via the upper casing which made working on an opened telephone difficult due to the cables restricting the movement of the upper case; repositioning of the terminal block made access significantly easier.  The switch hook forks also changed from the "antler" style to a short stubby style, which GEC were designed to be difficult to break.  The 1933 style of construction continued in production until 1956, with just a change after 1948 when Tropicalised variants were introduced. 

GEC tropicalised Gecophones had a new type contact springset fitted at an angle to the terminal strip, varnished Induction Coil, mesh over the base plate sound holes and an enlarged "neck".  The enlarged "neck" ventilated the case and was also insect proof.

In 1956 there is mention of the Gecophone K or Gecophone 1000, which used an identical case to the Gecophone.  The internal circuit was redesigned to match that of the newly introduced "1000 Telephone" but also acquired the new modern curved handset, with no spittoon.  A new Induction Coil was introduced and two cylindrical capacitors were fitted.  There is no indication that any of these were sold or produced in any number, but the phones were allocated code numbers for standard and tropicalised models.  The GEC pictures available here were probably field trial pictures and it is thought that this model was dropped in favour of the new desktop telephone, the "1000 Telephone".

The next Gecophone model, called the "New Gecophone", was first produced in 1959 and was identical to the plastic telephone used in the UK by the GPO throughout the 1960's and 1970's.

Some Gecophones have a DC bell and were usually installed on certain GEC PAX's.  They also had no induction coil because these phones were fitted with an Electro-magnetic receiver, which was just connected in series with the transmitter.  In this case the handset cord would only have two conductors, instead of the usual three.

The Gecophone saw considerable use on private (PAX, not PABX) systems installed by Reliance Telephone Company (a GEC subsidiary) and in the public network of the Irish P&T and some Commonwealth countries.  Examples also turn up with the branding 'Air Ministry' on the base.  The ST1503 model has been seen with Reliance labels on the case.

There may also be dates on the telephone components; sometimes the on the rear edge of the dial along with the figures "104", but in most cases on the capacitor.

Click here for more information on the GEC Gecophone.

Click here for GEC Gecophone wiring diagrams, picture identification and conversion to UK plug & socket.
 

Model Numbers

Originally, GEC telephones were always numbered with a two, three or four digit number, prefixed by the letter K i.e. K7055.

The K numbers continued until around 1933/1934 when the telephones and switchboards had their Catalogue numbers changed to figures only, that consisted of  three or four digits i.e. 204A (Current Comments - Volume 2, Number 4 - 1932).

Circa 1948 (Current Comments - Volume 3, Number 1 - 1948) the catalogue numbers changed to two letters followed by four numbers i.e. ST1301.

On 1st June 1955, GEC adopted a new method of code/catalogue numbering their telephone range.  The code consists of three groups of characters.  Every code number started with TEL.  But in 1956 the Gecophone was renamed the "Gecophone K" or "Gecophone 1000".  This was an updated telephone and superseded all previous Gecophones.  The only Gecophones available were then the TEL31G and TEL32G and whether these were produced in any number is open to debate.
 

GEC Quick Identifier

K prefixed models
1931 to 1933
Numbered models
1933 to 1948
ST prefixed models
1948 to 1955
TEL prefixed models
1955 to 1959
Capacitor - integrated fixings Capacitor - fixed with strap Capacitor - fixed with strap Capacitor - two cylindrical
Handset - Spittoon type Handset - Spittoon type Handset - Spittoon type Handset - Non-spittoon type
Base plate Terminal block
 - sideways
Base plate Terminal block
 - above ringer
Sideways on DC version
Base plate Terminal block
 - above ringer
Base Plate Terminal block
 - next to ringer
Induction Coil - DRG 41996 Induction Coil - DRG 42425
& DRG 52381
Induction Coil - DRG 52381 & DRG 53269 Induction Coil - DRG 53803
Contacts - straight Contacts - straight Contacts - straight (STD)
At an angle - tropicalised
Contacts - straight
Ringer mechanism - large Ringer mechanism - small Ringer mechanism - small Ringer mechanism - small
Cable entries - one large Cable entries - two Cable entries - two Cable entries - one
Large holes in base plate - 2 Large holes in base plate - 8 Large holes in base plate - 8 Large holes in base plate - TBA


GEC List of Gecophones

Model No. Signalling Type Description
K 8167 CB TABLE Gecophone
K 8387 AUTOMATIC TABLE Gecophone used on PAX systems
K 8388 AUTOMATIC WALL As K 8387 but supplied with wall mounting bracket
K 8389 AUTOMATIC TABLE Gecophone with DC bell
K 8390 AUTOMATIC WALL As K 8389 but supplied with wall mounting bracket

 

Model No. Signalling Type Description
75 AUTOMATIC TABLE STANDARD MODEL
85 AUTOMATIC WALL STANDARD MODEL ON WALL BRACKET
90 AUTOMATIC TABLE DC RINGING - FUW PAX 5000 OR 5100
94 AUTOMATIC TABLE DC RINGING - FUW PAX 5600
175 CB TABLE STANDARD MODEL
185 CB WALL STANDARD MODEL ON WALL BRACKET
316 CONVERTIBLE TABLE CONVERTIBLE
317 CONVERTIBLE WALL CONVERTIBLE
416 CONVERTIBLE TABLE CONVERTIBLE
417 CONVERTIBLE WALL CONVERTIBLE
516 CONVERTIBLE TABLE CONVERTIBLE
517 CONVERTIBLE WALL CONVERTIBLE
658 CONVERTIBLE TABLE CONVERTIBLE
659 CONVERTIBLE WALL CONVERTIBLE
ST 1301 CB TABLE STANDARD MODEL
ST 1302 CB WALL STANDARD MODEL
ST 1401 CB TABLE TROPICAL
ST 1402 CB WALL TROPICAL
ST 1406 CB TABLE TROPICAL - SHIPS TELEPHONE
ST 1407 CB WALL TROPICAL - SHIPS TELEPHONE
ST 1501 AUTOMATIC TABLE DC RINGING - FUW PX1110 OR PX1210
ST 1502 AUTOMATIC WALL DC RINGING - FUW PX1110 OR PX1210
ST 1503 AUTOMATIC TABLE AC RINGING
ST 1504 AUTOMATIC WALL AC RINGING
ST 1601 AUTOMATIC TABLE TROPICAL - DC RINGING - FUW PX1110 OR PX1210
ST 1602 AUTOMATIC WALL TROPICAL - DC RINGING - FUW PX1110 OR PX1210
ST 1603 AUTOMATIC TABLE TROPICAL
ST 1604 AUTOMATIC WALL TROPICAL
ST 1610 AUTOMATIC TABLE TROPICAL - SHIPS TELEPHONE
ST 1611 AUTOMATIC WALL TROPICAL - SHIPS TELEPHONE
ST 1701 MAGNETO TABLE CONVERTIBLE - REGULAR
ST 1702 MAGNETO WALL CONVERTIBLE - REGULAR
ST 1703 MAGNETO TABLE CONVERTIBLE - LOOP AUTO CLEAR
ST 1704 MAGNETO WALL CONVERTIBLE - LOOP AUTO CLEAR 
ST 1705 MAGNETO TABLE CONVERTIBLE - EARTH AUTO CLEAR
ST 1706 MAGNETO WALL CONVERTIBLE - EARTH AUTO CLEAR
ST 1707 MAGNETO TABLE CONVERTIBLE - RSAX EARTH CLEAR
ST 1708 MAGNETO WALL CONVERTIBLE - RSAX EARTH CLEAR
ST 1709 MAGNETO TABLE CONVERTIBLE - EARTH RING OFF
ST 1710 MAGNETO WALL CONVERTIBLE - EARTH RING OFF
ST 1711 CBS 1 TABLE CONVERTIBLE
ST 1712 CBS 1 WALL CONVERTIBLE
ST 1713 CBS 1 PARTY LINE TABLE CONVERTIBLE
ST 1714 CBS 1 PARTY LINE WALL CONVERTIBLE
ST 1715 CBS 2 & 3 TABLE CONVERTIBLE
ST 1716 CBS 2 & 3 WALL CONVERTIBLE
ST 1717 CB MANUAL TABLE CONVERTIBLE - CB
ST 1718 CB MANUAL WALL CONVERTIBLE - CB
ST 1719 AUTOMATIC TABLE CONVERTIBLE - AUTOMATIC
ST 1720 AUTOMATIC WALL CONVERTIBLE - AUTOMATIC
ST 1801 MAGNETO TABLE CONVERTIBLE - TROPICAL
ST 1802 MAGNETO WALL CONVERTIBLE - TROPICAL
ST 1803 MAGNETO TABLE CONVERTIBLE - TROPICAL - LOOP AUTO CLEAR
ST 1804 MAGNETO WALL CONVERTIBLE - TROPICAL - LOOP AUTO CLEAR 
ST 1805 MAGNETO TABLE CONVERTIBLE - TROPICAL - EARTH AUTO CLEAR
ST 1806 MAGNETO WALL CONVERTIBLE - TROPICAL - EARTH AUTO CLEAR
ST 1807 MAGNETO TABLE CONVERTIBLE - TROPICAL - RSAX EARTH CLEAR
ST 1808 MAGNETO WALL CONVERTIBLE - TROPICAL - RSAX EARTH CLEAR
ST 1809 MAGNETO TABLE CONVERTIBLE - TROPICAL - EARTH RING OFF
ST 1810 MAGNETO WALL CONVERTIBLE - TROPICAL - EARTH RING OFF
ST 1811 CBS 1 TABLE CONVERTIBLE - TROPICAL
ST 1812 CBS 1 WALL CONVERTIBLE - TROPICAL
ST 1813 CBS 1 PARTY LINE TABLE CONVERTIBLE - TROPICAL
ST 1814 CBS 1 PARTY LINE WALL CONVERTIBLE - TROPICAL
ST 1815 CBS 2 & 3 TABLE CONVERTIBLE - TROPICAL
ST 1816 CBS 2 & 3 WALL CONVERTIBLE - TROPICAL
ST 1817 CB MANUAL TABLE CONVERTIBLE - TROPICAL
ST 1818 CB MANUAL WALL CONVERTIBLE - TROPICAL
ST 1819 AUTOMATIC TABLE CONVERTIBLE - TROPICAL
ST 1820 AUTOMATIC WALL CONVERTIBLE - TROPICAL
TEL/1G/ AUTOMATIC TABLE GECOPHONE
TEL/2G/ AUTOMATIC TABLE GECOPHONE
TEL/3G/ AUTOMATIC TABLE GECOPHONE
TEL/4G/ AUTOMATIC WALL GECOPHONE
TEL/6G/ AUTOMATIC TABLE GECOPHONE - WITH BUTTON
TEL/10G/ CB TABLE GECOPHONE
TEL/13G/ AUTOMATIC TABLE GECOPHONE
TEL/31G/ATS AUTOMATIC TABLE GECOPHONE K or GECOPHONE 1000
TEL/32G/ATT AUTOMATIC TABLE GECOPHONE K or GECOPHONE 1000


 

TMC
The TMC compact cases originally were originally bought from Ericsson, so had the bottom of the case deeper on the corners but by the early 1950's they had changed to straight lower edges (like the GEC Gecophone).  The original base plates were also like Ericsson's and did not meet the edges.  Later base plates were flush with the case and had six oblong slots covered with mesh under the bell gongs. 

Most models had all the components fitted to the base, the bell gongs were barrel shaped and the case had two cable entry holes (horizontal) in the rear.

Under the outer rim of the dial there should be markings, one being the  letter "W" (they never made dials and so always bought them from STC) and possibly a date.  The marking "4004B", which is the TMC code for the dial, may also be present.

Telephone Rental models base plates have also been found with a set of 9 holes in a circle under each gong, a case with extended corners, a 6 way terminal block on the base plate and a flexible cord connecting the base to the main body.  These phones are most probably made with component parts purchased from Ericsson.

Many of the TMC compacts found have a cylindrical capacitor.  These were introduced in the UK circa 1947.

TMC also produced telephones for TR - Click here to view TMC telephones.

These telephones generally have no markings on the base but may have a diagram inside the case.

Model numbers all start with an S prefix.

Many compact telephones can be dated by means of the capacitors, but the TMC cylindrical and square capacitors will probably be undated.

TMC Quick Identifier

S52596 S52597 Unknown/TR
Capacitor - Cylindrical (1947 on) Capacitor - Cylindrical (1947 on) Capacitor - Cylindrical or square
Handset - Spittoon type Handset - Spittoon type Handset - Spittoon type
Terminals in case - 7 Terminals in case - 6 Terminals in case - 8
Terminals on Base plate - None Terminals on Base plate - None Terminals on Base plate - 6
Cable entries - 2 Cable entries - 2 Cable entries - 1
Holes in base plate - Slots Holes in base plate - Slots Holes in base plate - 18

The unknown/TR compact is probably made from parts supplied by Ericsson.  Ericsson base plates had 18 sound holes in the base plate and the plate stamping looks very similar to the Ericsson base plate.

 

Gents & Co.
Based on the Gecophone case this company produced and marketed intercom telephones called "Interphones".


GENTS & Co. Quick Identifier

 

Model Identification Sizes
2036 Rotary dial switch and ringing lever on right side of casing 5, 10 & 15 way
2046 Rotary dial switch and ringing lever on right side of casing 5, 10. 15, 20 & 25 way
2096 Single press button in dummy dial plate Used in pairs
R50 Press buttons in place of dial 5 or 10 way


Click here for Gents telephones
 

 

 
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Last revised: August 11, 2022

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