Z 8125 "FULHAM" DI-FRACTOR LANTERN British Patents Nos. 424800, 408419 and 427835. Outside diameter 18 ins. Overall height 26 ins. Weight (complete) 30 lbs. Top connection. Standard ¾-inch gas thread. Other tappings up to 1½ins. to order.

G.E.C. "Fulham" Di-Fractor Lantern

Totally enclosed dust-proof lantern, specially designed for use with 250-watt and 400-watt OSIRA lamps. Constructed of heavy gauge copper with porcelain enamelled steel inner and outer reflectors. The outer reflector is hinged and provided with a locating notch for a G.E.C. single piece prismatic bowl refractor, which also acts as a dust-proof outer globe. The light distribution is non-axial asymmetric, the main beams being 160° in plan. The G.E.C. patented bowl refractor enables so good a control of light to be obtained that a very high degree of road brightness is produced, and this is now the criterion by which street lighting should be judged. The lantern is wired with heat-resisting leads from the patent top connecting box, specially designed to eliminate all danger of lamp failure due to water drop or condensation. A two-positioned G.E.S. porcelain lampholder enables the lantern to be used with 250 or 400-watt lamps. A felt ring is provided for the refractor bowl.

The external finish of the lantern is aluminium colour with all reflecting surfaces heavy vitreous enamlled.

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