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Sangamo
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Sangamo Weston Limited
British Sangamo Company Limited
Cambridge Arterial Road,
Enfield
Middlesex
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The firm's name is British Sangamo Company Limited until January 1939. At some point between that date and the next
advert in July 1939, the firm's name changes to Sangamo Weston Limited.
The firm are exhibiting various Sangamo Time Switches and apparatus for street lighting control. Among the Time Switches
the most important is the Sangamo Type S.S. Time Switch, a small synchronous switch particularly suitable for
street lighting control. Other exhibits include various Sangamo street lighting
psot boxes and a range of Illumination Meters from Weston. - Public Lighting #10, 1938 and APLE Conference Programme 1938
The type SSC (SS in the adverts) Solar Dial synchronous switch is described. The main features
of the switch are the Solar Dial which settings can be made up to
three-quarters of an hour either side of sunrise or sunset, the Day
Omitting Device to cut out the whole sequence of operations on any
day or days of the week, and the External Manual Operation by means
of which the switch may be externally operating by hand
without disturbing the sequence of operations. Solar Dials are
supplied for four different latitude ranges: 50°
52° 54° and 56°. - APLE Conference Programme 1939
Several switch types are available for street lighting applications and all use the Type G Synchronous Motor.
The "S" range is outlined but full details of the various options of the "SS" range are described. - APLE Conference Programme 1945
The time switches are of the synchronous motor-driven type. The "SS" switches are enclosed
in bakelite cases and are of the plug-in type, the bakelite base forming the plug receptacle.
Various weatherproof post mounting boxes are available for use with these switches. The switches
are fitted with a standard 24-hour dial, with a solar dial for operating at times of sunrise
and sunset, or with a 1-hour dial. All switches are supplied as single pole, single throw types
and the 24-hour and solar switches are also available with single pole, double throw, changeover
contacts. The day omitting device, when fitted, enables the operations to be cut
out on any predetermined day or days of the week. - APLE Conference Programme 1946
Are exhibiting the SS, S15 and S8 time switches. Also are showing the HMT House Service Meters for
registering the energy consumed by lighting and power circuits; and Indicating Instruments for measuring voltage, current and
power. - APLE Conference Programme 1947
Full range of the SS time switches are being exhibited. All are housed in moulded bakelite cases and
are of the plug-in type. Various weatherproof post mounting boxes are supplied for use with these switches. The most popular
for street lighting is the SSC which is fitted with a solar dial for operating at sunrise and sunset. This switch can
also be provided with a simple fitment affording "off" and "on" operations between the above times. The solar dial is
interchangeable with the standard 24-hour dial and the switch can also be supplied with a one hour dial. Other switches include
the S15 with 25A contacts and S8 which may have up to 4 poles for 2 or 3 cycle operation. Meters and Instruments
are also being shown including the HMT A.C. Watthour Meter and the new S85 pocket size photometer. - APLE Conference Programme 1948
A full range of the well known SS time switches are being exhibited. They are of the synchronous motor
driven type and are available in a number of forms for a wide variety of automatic time control applications
on A.C. circuits. They are housed in moulded bakelite cases and are of the plug-in type, the bakelite case forming the
plug receptacle. Various weather proof post mounting boxes are supplied for use with these switches. The most popular
switch for street lighting control is the type SSC switch which is fitted with a solar dial for
operating at the times of sunrise and sunset. This switch can alos be provided with a simple fitment affording
"on" and "off" operations between the above times. The solar dial is interchangeable with the standard
24-hour dial and the switch can also be supplied with a one hour dial. All the switches are supplied as
single-pole, single-throw types and the 24-hour and solar swtiches are also available with single-pole,
double-throw changeover circuits. The day omitting device, when fitted, enables the operations to be cut-out on
any pre-determined day or days of the week. - APLE Conference Programme 1949
References:
APLE Conference Programme Bournemouth 1938
APLE Conference Programme Glasgow 1939
APLE Conference Programme Glasgow 1945
APLE Conference Programme London 1946
APLE Conference Programme Southport 1947
APLE Conference Programme Eastbourne 1948
APLE Conference Programme Llandudno 1949
- External Links:
- Grace's Guide
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