Patt.50A

The Patt.58 had a masking disc in front of the lamp in place of the spill rings.

(Manufacture stopped in 1960)

This lantern provides a very intense soft edged narrow beam of light, the size of which can be varied slightly. It is particularly suitable for simulating sunlight on the stage, and for photography and other cases where a really intense beam is required.

SPECIFICATION
The housing is constructed in sheet steel, efficiently ventilated. The rear door carrying a 10-inch diameter silvered glass parabolic reflector, gives access to the lamp tray which carries and gives axial and vertical adjustment to the lampholder. The lamp is focused by worm drive from the rear of the housing. The front is fitted with spill rings to cut off stray light, and runners to carry colour frames. The tilting fork which locks the lantern in position by two 3-inch diameter handles, terminates in a ½-inch Whitworth stem, for suspension by barrel clamp or insertion in base, stand or other support. The lantern is wired in 3-feet heat-resisting tails without plugs. Finish: black crystalline enamel outside, matt black inside.