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Z 8122 "DI-FRACTOR" LANTERN
British Patents No. 408419
| Outside diameter | 18 ins. |
| Overall height | 25 ins. |
| Weight (complete) | 22½ lbs. |
| Top connection. Standard tapping ¾-inch gas thread. Other tappings to order. |
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G.E.C. "Di-Fractor" Street Lighting Lantern
Totally enclosed dust-proof lantern, specially designed for OSIRA lamps. The body is of heavy guage
copper with porcelain enamel steel inner and outer reflectors. The outer reflector is hinged and
provided with a locating notch for the G.E.C. single piece prismatic bowl refractor-diffuser
(Z 6609), which also acts as a dust-proof outer globe. The refractor has a non-axial asymmetric
distribution, the two main beams being 160 degrees apart in plan. The patented combination of refracting
prisms and diffusing flutes provides a high degree of light control together with an increase of flashed
area, the resultant distribution giving high and even road-brighness with a minimum of glare. The incorporation
of refractor, diffuser and outer globe in one piece of accurate glassware gives a low absorption
high efficiency unit. The possibility of lamp failures due to water-drop or condensation is entirely
eliminated by the patent top connecting box which is similar to that described on page 22.
| Z 8122 | Price complete | each | £5 17 9 |
| Spare Bowl Refractors. | Z 6609 | Spare refractors for Z 8122 lanterns | each | £2 12 6 |
| Spare Felt Gaskets. | Z 7609 | Spare gaskets for Z 8122 lanterns | each | 3 6 |
| Spare Wire Nets. | Z 0609 | Spare wire nets for Z 8122 lanterns | each | 3 0 |
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