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eleco: highway reference book 1951

Dating from 1951, The Highway Reference Book included a page of ELECO's lanterns and brief descriptions of their uses.



PROGRESS IN STREET LIGHTING BY ELECTRICITY

ENGINEERING & LIGHTING EQUIPMENT CO. LTD., ST. ALBANS, HERTS.

Specialists in street and highway lighting units, the above Company have lately added to their range of two-way directional lamps the following :-


THE "WARWICK" is a side-entry lantern for use with 250/400-watt MA/V or 125-watt MB/F mercury lamps, the main body of which comprises an aluminium alloy casting to which the refrator retaining ring is secured by a hinge and swivel bolt. A notable feature is the suspension assembly which permits irregularities up to 12° in column or bracket alignment to be overcome.

Except for a set of prisms at the back of the bowl to avoid waste of light behind the fitting the bowl refractor has a smooth exteriro surface. A vitreous enamelled internal reflector ensures fullest light utilisation. Immediate adjustment to the lampholder position can be effected to achieve correct focal relation between the lamp and the refractor.

THE "GOLDEN RAY" MARK II, is a top-entry lantern for use with 45/60-watt and 85/140-watt SO/H sodium lamps, and is particularly suited for use in industrial areas where maintenance cleaning presents a serious problem.

The sealing of the external prisms of the refractor panels is augmented by the provision of a hinged "Perspex" bottom door totally enclosing the lantern, a substantial white felt gasket eliminating the possibility of ingress of atmospheric pollution.

THE "ARISTOCRAT" is intended for use with tubular fluorescent MCF/U lamps, 2 x 80-watt and 1 x 40-watt, and is designed to ensure ease of maintenance. The starter switches for the three lamps are housed externally so that immediate access can be obtained. The main reflectors on either side of the fitting can be hinged away, exposing the whole interior of the fitting.
THE "LANCASTER." - A side-entry lantern for 250/400-watt MA/H horizontal-burning mercury discharge lamps, which combines the advantages of the increased lighting efficiency possible with a horizontal source, a controlled cut-off distribution and the neat and general appearance resulting from end suspension. Controlled cut-off distribution is effected by the positioning of the light source well up in the body of the fitting, while light distribution is effected by a combination of anodized aluminium internal side reflectors and the bottom refractor dish specially designed for use with this type of fitting. The refractor prisms are carried in the inside of the dish having a smooth exterior surface.


Other fittings in the Eleco range include :-

THE "ORBITAL" is one of a complete range of fittings available for Mercury Discharge Lamps of 250/400 watt. Robust construction is an outstanding feature, and special attention has been paid to easy access to the interior. The distribution is by means of specially designed refractor prisms, which ensure the fullest possible utilization of light from the discharge lamp for road illumination.
THE "ROYSTON", with an hexagonal body is cast in one piece and focal positions for the two sizes of lamp are incorporated. The single piece dome refractor gives symmetric, axial or non-axial distribution, and is held by a release device based on the bayonet principle, which has the additional feature that it is impossible to replace the refractor incorrectly when removed for cleaning. For use with 300/500-watt Tungsten lamps or 80 and 125-watt mercury fluorescent lamps.
THE "STEVENAGE" is similar to the "Royston" but with the addition of a clear outer globe which is held in a cast globe ring, the fitting being completley dustproof.
THE "WELWYN" embodies a single-piece refractor, giving 170° distribution in the horizontal plane. Pre-determined fixing stops are incorporated to ensure that each size of lamp is in correct focal position. 60/200-watt Tungsten lamps or 80 and 125-watt mercury lamps can be fitted.
THE "WARE" is similar to the "Welwyn" but has an additional clear outer globe held in a cast hinged ring. Provision is made for fixing a 16 in. diameter vitreous enamelled reflector if required.
THE "BALDOCK". - The optical system of this lantern consists of a bowl refractor which gives axial or non-axial distribution.
THE "PINNACLE" for use with 80 and 125-watt mercury discharge lamps and gas-filled lamps up to 200-watts. Made in two designs, 2-way and 3-way Front extension and 3-way Back extension. The porcelain lampholder is adjustable for correct focal position and has an anti-vibration device which greatly reduces lamp breakage. The surface of the mirrored reflectors is dimpled to minimize glare and the fitting is supplied to give either 160° or 180° plan distribution.