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sheffield
Spun steel body, vitreous enamelled, white on the under side or reflecting surface and
green on top. Fitted with a detachable canopy which was provided with the usual type of
twin-leaed-in suspension. A glass cylinder was fitted to the underside to protect the lamp
from rain. Provides an even diffused illumination over a wide area when fitted with the
Opal type of Gas-filled lamp.
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????
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200W GLS
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ES
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???
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???
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1932 Catalogue
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????
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300W GLS
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ES
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???
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???
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1932 Catalogue
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????
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500W GLS
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ES
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???
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???
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1932 Catalogue
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charlton-sieray
See also ELECO Vapoura.
An ornamental unit with asymmetrical distribution curve suitable where "White Way" type of lighting is preferred
to lighting having a directional characteristic. It has a cast aluminium canopy carrying a 24" reflector and an
ornamental diffusing globe. The globe is carried on an aluminium spinning which is much safer than the customary
three set screws. The base of the globe is finished off with an ornamental copper spinning. The globe can be lowered
for cleaning purposes and for lamp replacement and when lowered is suspended by chains so the operator has both
hands free for cleaning.
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???
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???
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???
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Top Entry
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No Gear
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1944 Journal
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preston-sieray
Lantern designed in 1936 for the newly-introduced MAT/V lamp. First
installed in Preston. Could provide a symmetrical light distribution. For use with the
Siemens Sieray-Dual lamp. The metal work of this lantern is exactly the same
as the Charlton-Sieray but is fitted with a larger globe of white glass.
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????
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500W MAT/V
500W GLS
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GES
GES
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Top Entry
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No Gear
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1936 Journal
1936 Journal
1938 Journal
1939 Advert
1944 Journal
1959 Journal
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regent-sieray
See also ELECO Orbital
Described as newly introduced in 1936. Exibited at the Public Works Congress
in 1937. Designed for use with the Siemens Sieray "H" lamp.
Probably named "Regent" after first installation in Regent Street, London, although there's no literature
to back that up. Designed fro asymmetric distribution with 160° or 180° spread between the main beams, light control
being effected by Holophane refractor panels. It consists of a cast-iron hinged top enclosing the wiring chamber, cast
aluminium alloy canopy and bottom framework, with the side angle pieces of heavy guage brass. A special feature is the complete
isolation of the lantern interior from the wiring chamber, connection between the two by means of Mica insulated terminals so sealed-in
as to be watertight. Condensed moisture cannot possibly enter the lantern from the bracket arm whilst the lead wires are totally
enclosed.
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Regent-Sieray
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400W MA/V
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GES
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Top Entry
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No Gear
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1936 Journal
1937 Advert
1937 Programme
1938 Journal
1937 Journal
1938 Programme
1939 Advert
1939 Advert
1939 Journal
1944 Journal
1945 Journal
1947 Journal
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gower-sieray
First described in 1937. A blended-light lantern which could take
one mercury discharge lamp and two gas-filled tungsten lamps. Provides
a directional distribution. Could've been named after the first installation in Gower Street, London; but
the literature is sketchy and only MV Gower lanterns have been explicitly
mentioned as being used.
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gower-sieray
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250-400W MA/V + ???GLS
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GES + ???
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???
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???
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1936 Journal
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bi-way
Believed to be the Holophane Bi-Way.
Exhibited at the Public Works Congress in 1937. For Group A lighting. Could take the
Siemens Sieray "H" lamp. Can be supplied with two-way axial asymmetric,
two-way non-axial asymmetric or symmetric light distribution. The Holophane Bowl Refractor is manufactured
in one piece with an outer surface that is smooth except on the pavement side. It has a reflecting segment on the
pavement side for redirection towards the street, and a series of prisms adjacent to the flange, for refraction of
the upward rays emitted by the lamp. The body of the lantern is soundly constructed and very robust. Hinged cast rings
carry the glass refractor and are connected together by 3/8in. diameter steel rods. The outer casing is of heavy gauge
spun copper, and the reflector of vitreous enamelled steel. The refractor is secured to its ring at three points and
cannot be dislodged accidently when the lantern is opened. Lamp focussing is by means of an adjustable cast bridge.
The cast head incorporates cable inlets anda separate wiring chamber heat insulted from the body of the lantern, the
design being such as to prevent the ingress of water into the lantern.
A new design of this lantern was made available in 1945 which utilised a
Holophane bowl refractor. It used a
Holophane one piece bowl refractor which can be
supplied to give two-way axial, two-way non-axial or symmetrical light distribution
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????
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250-400W MA/V
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GES
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Top Entry
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No Gear
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1937 Journal
1937 Programme
1937 Journal
1938 Advert
1944 Journal
1945 Journal
1945 Programme
1946 Journal
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dalston-sieray
Exhibited at the Public Works Congress in 1937.
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???
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250-400W MA/V
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GES
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???
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???
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1937 Journal
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pinnacle
Exhibited at the Public Works Congress in 1937.
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???
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80-125W MB
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3BC
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???
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???
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1937 Journal
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duo-dome
Believed to be the Standard Type Holophane Duo-Dome.
Exhibited at the Public Works Congress in 1937. The lantern consists of a cast iron body with detachable hood and
vitreous enamelled reflector. It is fitted with an external focussing device attached to the hood. The
Holophane Duo-Dome Refractor is smooth on both the exterior and interior surfaces and is attached to the
reflector by means of an internal copper sleeve. It can be supplied with two-way axial, 150° or symmetrical
distribution.
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???
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80-125W MB
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3BC
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???
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???
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1937 Journal
1944 Journal
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ruralux
Exhibited at the Public Works Congress in 1937.
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???
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80-125W MB
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3BC
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???
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???
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1937 Journal
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barnet-sieray
For Group A lighting. A more decorative version of the Regent-Sieray.
Designed for use with the Sieray "H" type lamp (MA/H) but also could accomodate
the Sieray-Dual lamp (MAT). Gives an asymmetric light distribution with a spread of
160° between main beams, the control being effected by Holophane refractor
plates. Made of non-ferrous metals expect for the cast iron top and vitreous enamelled
reflector. By 1945, refractor plates for either 160° or 180° main beams were available.
Similar in construction to the Regent-Sieray Lantern except it's fitted with a dished bottom door, glazed with
diffusing glass, which improves the appearance of the lantern without detracting from its efficient light distribution.
The extra depth allows accomodation for the 500W Sieray-Dual Lamp.
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???
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250-400W MA/V
300-500W MAT/V
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GES
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Top Entry
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No Gear
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1938 Programme
1939 Programme
1939 Advert
1939 Journal
1944 Journal
1945 Programme
1946 Journal
1946 Programme
1947 Programme
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albion-sieray
Designed to use the Sieray Horizontal Burning Lamps which don't require magnetic arc deflector.
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Albion-Sieray
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400W MA/H
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ES
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???
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???
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1938 Programme
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sola-sieray Lantern
Designed for use with the 140W Sieray Sodium lamp (SO/H). Gives an asymmetric light
distribution with a spread of 160° between main beams, the control being effected by
Holophane refractor plates. The top is of cast-iron, the ends
are cast aluminium and the refractor plate bottom supports are heavy guage copper.
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???
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140W SO/H
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BC
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???
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No Gear
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1939 Programme
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camden-sieray
For Group B lighting. Fitted with a Holophane
Bowl Refractor. Designed for 80W or 125W "Sieray" lamps. Consists of a cast iron top to which is hinged a cast iron
ring carrying an external vitreous enamelled reflector and Holophane Bowl Refractor. The lantern is fitted with
an internal vitreous enamelled reflector and external focussing device.
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???
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80-125W MB
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3BC
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Top Entry
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No Gear
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1944 Journal
1945 Programme
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arp lantern
Complies with British Standard Specification BS/ARP 37. For wartime use. The large area of the reflecting
surface is utilised therefore night appearance is good. The large diameter (12") provides good daylight appearance.
For mounting heights of 19' and upwards, at a spacing
in plan of not less than 100', when fitted with 25W pearl lamp. When so installed a general level of illumination
of 0.0002 foot-candle will be provided and howhere will the value exceed 0.004 foot-candle. The fitting consists of a
standard 12" diameter R.L.M. Reflector, stove-enamelled black inside and outside, carrying an annular slotted mask
so designed and located as to procude the desired light distribution. The exterior of the mask and the interior of the
bottom portion are stove-enamelled black; the cylindrical upper portion is stove-enamelled white inside. Access
for cleaning and relamping is provided by the removal of the bottom portion of the mask. In designing this reflector
the Siemens lighting engineers have aimed at producing a fitting giving its resutls through the medium of
large areas at low lighting intensities e.g. the reflector is flashed to a depth of approximately 2¼" whilst
a reasonably broad ring of light is emitted from the slot in the mask. In this fitting the mask is fixed to the top of
the reflector.
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???
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25W GLS
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BC
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???
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No Gear
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1940 Advert
1940 Journal
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concrete lantern
For Group B lighting, this design evolved in collaboration with
Concrete Utilities in 1945 to form part
of a concrete bracket arm. "The cast concrete head carries a ring, to which
are fixed the lampholder supports, porviding three lampholder positions,
and to which a Holophane Duo-Dome refractor is
attached by three special fasteners. A quarter-turn of these fasteners
instantly frees the refractor for cleaning etc., without the removal of
any stud or nut. All rings and supports, etc., are made of non-corrodible
metal, consequently maintenance is reduced to the absolute minimum.
A Concrete Lantern for Group 'A' lighting is in course of development, and
this will incorporate an ingenious method of dissipating heat from the
lantern interior, the subject matter of a patent."
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???
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???
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???
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???
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???
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1945 Programme
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newton-sieray minor
For Group B lighting. A side entry lantern fitted with a single-piece Holophane
Dome Refractor.
It is made with a one-piece cast canopy and reflector and is tapped ¾-in. gas thread as standard (with
provision for 1-in. if required). In the top of the lantern are three pairs of cast lugs, to one of which
a strap is fixed which carried the appropiate lampholder. These are arranged that any lamp for which
the fitting is designed will take up its correct focal position. The strap carries a porcelain skirted pattern
and is of the B.C., E.S., or 3-pin B.C. type. The reflector is stove enamelled white on the reflecting surface.
The glassware is available with two types of distribution: symmetric and 2-way non-axial with 170° between
the main beams. The maximum candle power is at 78° to the downward vertical. The glassware is held in
position by two phosphor bronze rods which are secured to the main casting, the necessary locking being
obtained by two phosphor bronze springs. Provision is made for locating the glassware correctly in respect to
the body of the lamp. Could also be fitted with an optional clear glass outer globe.
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???
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100-200W GLS
80-125W MB/V
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BC
3BC
ES
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Top Entry
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No gear
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1945 Programme
1946 Journal
1946 Journal
1946 Programme
1947 Book
1947 Journal
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halton-sieray
Introduced in 1946. For Group "A" lighting. [Picture probably incorrect - shows an earlier lantern with earlier refractor bowl]. A bowl refractor lantern of new design
which uses the Holophane 4140 bowl refractor. Bowl refractor type normally suitable for the 250 or 400-watt medium pressure (MA/V) "Sieray"
mercury discharge lamp. By adding an internal reflector it is possible to use this lantern with Siemens tungsten filament lamps.
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???
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250-400W MA/V
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GES
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???
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???
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1946 Programme
1947 Journal
1947 Programme
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marton-sieray
Introduced in 1946. For Group "B" lighting. A small bowl refractor lantern.
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100-200W GLS
80-125 MB/V
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BC
3BC
ES
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???
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???
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???
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1946 Programme
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euston-sieray lantern
(Incorrectly initially called the Weston-Sieray in a journal and then called the Dilux in another. The lantern
is similar to Holophane's Dilux as they both use the same trough refractor).
For Group "A" lighting. Side-entry bowl refractor lantern designed to house either a 250 or 400-watt
Sieray MA/V lamp. The lamp burns horizontally with a magnetic arc deflector.
Called 'newly designed' in 1947. The lantern employs a Holophane refractor in conjunction
with reflectors of anodised aluminium to control the light distribution - the use of the horizontal burning lamp
and the design of the optical system ensuring a broad beam of light in the horizontal plane.
The lantern body is constructed of silicon aluminium alloy and its lines are in keeping with the present-day trend.
It is designed primarily for side entry but if required it can be suitable for pendant mounting - the exterior contour
of the body being altered in this case so that it presents a symmetrical appearance. In the side entry position the
lantern is fixed on the bracket by means of a boss on the lantern which is tapered internally and into which will fit
a split brass cone. The cone is pulled up tightly on to the bracket arm by means of a running screwed plug and the
length of the boss ensures an adequate bearing surface.
The framework, which carries the prismatic glass refractor, is hinged for access to the lamp for replacement purposes -
the wing nut fixing being captive.
The lantern employs a Holophane prismatic dish refractor in conjunction with reflectors of anodised aluminium to control the
light distribution - the use of the horizontal burning lamp and the design of the optical system ensuring a broad beam of light in the
horizontal plane. The lantern body is constructed of silicon aluminium alloy and its lines are in keeping with present-day trends. It is designed
primarily for side entry but can be suitable for pendant mounting - the exterior contour of the body being altered so it presents a symmetrical
appearance. In the side entry position the lantern is fixed on to the bracket by means of a boss on the lantern which is tapered internally
and into which will fit a split brass cone. This cone is pulled up tightly on to the bracket arm by means of a running screwed plug and
the lenth of the boss ensures an adequate bearing surface. The framework, which carries the prismatic glass refractor, is hinged for access to
to the lamp for replacement purposes - the wing nut fixing being captive.
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???
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250-400W MA/V
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GES
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Side Entry
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No gear
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1947 Journal
1947 Programme
1947 Journal
1948 Journal
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wilton-sieray 3-80
Details of construction include: aluminium body braced by transverse and longitudinal U channels,
control gear platform completely wired with three sets of "Sieray" long type control gear (choke, power factor capacitor, quick start
transformer and radio suppressor capacitor), three anodized aluminium reflectors of fixed contour, and separate clear "Perspex"
moulded doors. The unit is suitable for pole or spanwire mounting.
For pole mounting the lantern is erected in four simple sections. A robust mild steel frame bracket is bolted in place first,
followed by the control gear platform ready assembled and wired. The anodized aluminium reflectors are then clipped in and held by
turn screws. Finally, the "Perspex" doors are added and secured at the base of the lantern by wing-nuts.
The lantern accommodates three 80-watt "Daylight", "Natural" or "Warm White" fluorescent tubes. A mounting height of 25 ft. is recommended
and a spacing of 40 yards to give 6,000 lumens per 100-ft. linear of road. The ratio of the peak candle power to the average of
the values in all directions downward from the source and lying 30° and 45° from the vertical is less than five.
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5313
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3x80W MCF
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6xBC
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Side entry
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Gear
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1951 Book
1953 Public Lighting
1959 Public Lighting
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wilton-sieray 2-40
|
???
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2x40W MCF
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4xBC
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Side entry
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Gear
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1951 Book
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orbicular
|
????
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???W SO/H
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BC
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Side Entry
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No Gear
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1953 Advert
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Coventry
|
????
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4,6,8x80W MCF
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BC
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Top Entry
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Gear
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1956 Advert
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Carpenter
|
????
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2,3 3' tubes
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BC
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Top Entry
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Gear
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1956 Advert
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Crawley
|
????
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2x20W MFC
2x40W MFC
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BC
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Top Entry
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Gear
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1956 Advert
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