Collaro Ltd


 

COLLARO HISTORY

Christopher CollaroCollaro Langley Mills 1944-45

Collaro Ltd was founded in 1920 by Christopher Collaro (18-06-1895 Constantinople Turkey – March 1986 Poole, Dorset, England); a Greek national who immigrated with his widowed mother to London in his early teens.

The first advertisements for Collaro spring motors appear in the March 1925 edition of The Gramophone. STRONG SILENT COMPACT and BRITISH.  Four motors are advertised, suggesting that Collaro had been busy in design and manufacture of these high quality motors. Their unique feature was that the frame was made in one piece so “Any one part can be removed or replaced without interfering with the rest of the Mechanism”. They were mainly sold wholesale to the trade.

Collaro motors were advertised with the very first E.M.G gramophone (Magnaphone of 1925). Thorens or Collaro at £2 extra.

Because of the very high quality of Collaro motors, demand was high and with exports to the US increasing, Collaro moved to larger premises in Peckham, London.

By 1930, Collaro had six new models of spring motors. Still with the one piece frame but even more compact and refined; more importantly, cheaper to produce and now affordable to the general public.  They also started manufacturing electric gramophone motors.

During WW2, Major Christopher Collaro and his workforce were moved out of London to Langley Mill in Derbyshire. Here the factory was refitted, the workforce enlarged to 2000 and they were set to producing munitions for the war.

After the war, Collaro moved down south again and set up at Barking, Essex. They resumed manufacturing gramophone parts. Now concentrating on record changers and also producing Collaro branded record players and related accessories.

Christopher Collaro and Collaro Ltd held dozens of patents for improvements in gramophones from 1930 to 1959, when Collaro was sold and it’s assumed Major Collaro retired.  

Collaro Ltd was sold off to the American conglomerate, Magavox. By 1961 Collaro was described as the largest manufacturers of record changers in the United Kingdom. In 1974, Magnavox were acquired by Philips and the Collaro name died.


 

COLLARO TIMELINE


Here is a quick reference page for Collaro Spring Motors.

Dates for Collaro motors are subjective and are taken from advertisement and dated catalogues. It does however seem plausible that at least the electric motors were names by the year they were released. All the advertisements and reviews I have read seem to bear this out.

This page will attempt to document spring and early electric motors used in gramophones. It will not cover the plethora of Collaro record changers and players.


 

COLLARO SPRING MOTORS

1925 advertisment in The Gramophone magazine:

Models: M1; M2; M2a & M3a

Model Date Frame Governor Features Spring # Width x Thickness Spring Length Outer End Inner End
Collaro M1 1924/25 One piece cast Ball First Collaro Motor Single 7/8” x 0.020" 11' 6" Pear Hole
Collaro M2 1924/25 One piece cast Ball Used in early EMG gramophones Single 7/8” x 0.022" 11' 9" Pear Hole
Collaro M2a 1924/25 One piece cast Ball One piece frame Double 3/4” x 0.023" 13' Pear Hole later Hub
Collaro M3a 1924/25 One piece cast Ball Vertical barrels Double 1 1/4” x 0.024" 19' 8" Keyhole Hole

1930 advertisment in The Gramophone magazine:

Models: A27; A28; A30; B28; B30; C27; & D30

Model Date Frame Governor Features Spring # Width x Thickness Spring Length Outer End Inner End
Collaro A27 pre-1930 One piece cast Ball   Single 7/8” x 0.024" 10' 6" Pear Hub
Collaro A28 1930 19/- One piece cast Ball Improved winder mechanism Single 7/8” x 0.024" 10' 6" Pear Hub
Collaro A30 1930 19/- One piece cast Ball Compact Single 7/8” x 0.022" 8' 9" Pear Hole
Collaro B28 1930 33/- One piece cast Ball Two-spring A28 Double 3/4” x 0.023" 8' 9" Pear Hub
Collaro B30 1930 28/- One piece cast Ball Two-spring A30 Double 3/4” x 0.023" 8' 10" Pear Hub
Collaro C27 1930 46/- One piece cast Ball Two-spring A27 Double 1” x 0.024" 14' 9" Pear Hub
Collaro D30 1930 One piece cast Ball Larger B30 Double 1” x 0.028" 15' 6" Pear Hub

 

COLLARO ELECTRIC MOTORS

Collaro Induction Motor "Empire": The Gramophone review, July 1931. £3.

The first Collaro electric motor.

  • The turntable is driven through gearing by a high speed motor in a drum-shaped armature
  • All moving parts, including the governor are enclosed in a one piece aluminium casting
  • Both main bearings are fitted with spring-loaded wick lubricators
  • Incorporated in the vertical turntable spindle is a flexible coupling which ensures freedom from speed fluctuation due to variations in supply voltage
  • The circuit includes a pre-set automatic stop switch
  • Ingenious reversible contact plate for adjusting voltage for 100/130 to 200/250 volts A.C.
  • Here is a picture of the WIRING of this motor to the block. Looking into the motor behind the governor there are 4 wires from the stator. Top left-Thick brown. Top right-Thick black. Botton right-Thin brown. Bottom right-Thin black.
  • This one fitted to an EXPERT Senior

Collaro No32 Induction Motor: First mentioned in The Gramophone, March 1932.
£2. 5s. 0d & £2. 10s. 0d. with unit plate

This was basically the same as the earlier "Empire" induction motor except Collaro managed to reduce the price even further.

  • Less torque than the "Empire" motor but still adequate for most users
  • More compact design
  • Stator changed from the huge cylinder shape to a more compact rectangular shape with fewer field coils
  • As fitted to the EXPERT Audio Player

Collaro AC-34

There is mention in The Gramophone magazine of 1934, of Collaro working on new AC motors but I have found no details until finding pictures of this AC-34 motor on a Polish site. With just the one standard voltage, perhaps they were only made for the export market

  • AC-34 turntable motor 200 / 250V 50 cycles only
  • Compact design
  • Note the later AC-34 with a different lever speed adjustment, cheaper pot-metal body and ~50-60 cycles

Collaro U-36. Universal AC/DC motor: 1936. £3. 5s. 0d.
With Unitplate and pickup 85/-, and with volume control 87/-.

First mentioned in The Gramophone magazine in August 1936

  • There is mention of a Collaro Universal motor in July 1934 but I cannot find any information on that model
  • Universal motor. AC or DC, 100-130 & 200-250V 25 to 60 cycles
  • Was often used in the Collaro Automatic Record Player and in Collaro record changers

Collaro AC-37. Dual Voltage: 1937

First mentioned in The Gramophone magazine in September 1937

  • AC-37 turntable motor 100-130 & 200-250V 50/60 cycles
  • Was often sold as a complete unit. Comprising of a motor mounted on a plate with Collaro tonearm. Here are a few pictures of a boxed unit. AC-37

Collaro AC-47. Dual Voltage: 1947

Probably the most popular electric motor produced by Collaro. Basically an updated AC-37

  • AC-47 turntable motor 100-130 & 200-250V 50/60 cycles
  • Was often sold as a complete unit. Comprising of a motor mounted on a plate with Collaro tonearm. Here is a noisy video of a working Collaro AC-47

MISCELLANEOUS Collaro Electric Motors

  • Collaro A.C. 505 Centre Drive Electric Gramophone Unit (C.1950's). Brochure uploaded at TTMF by Graham Rankin