From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Magazine reprint article describing the new Marchal Trilux Head-lamp.
| Identifier | ExFiles\Box 61a\2\ scan0017 | |
| Date | 6th September 1927 | |
| Reprinted from The Motor September 6, 1927. A NEW MARCHAL HEAD-LAMP. THE Marchal head-lamp is fitted to many Continental cars and high-class English cars and has earned an enviable reputation for the high quality of its workmanship and the excellent road illumination which it gives. A new model has recently been introduced, and is known as the Marchal Trilux. As will be seen from the accompanying illustration, the bulbs are carried in a support mounted actually in the front of the lamp instead of protruding from the rear through the reflector. Thus one has an absolutely unbroken reflecting surface, which assists considerably in getting the excellent illumination; the rays of light for the main illumination are collected from an inverted bulb mounted centrally at the front into one luminous point and thrown against the periphery of the reflector. The Marchal Trilux Headlamp. There are three bulbs in the Trilux lamp, one mounted at the centre which gives the main beam of light, whilst a second one mounted above it gives illumination of lower power and is used for dimming purposes after the main one is extinguished when meeting oncoming traffic. It is so arranged, however, that by means of the special lens fitted in the front and facing it a good driving light is still obtained. There is yet a third bulb, of the festoon type, mounted lower down, which gives sufficient light for town driving purposes. The bracket in which the bulbs are mounted is made integral with the front rim, so that when this is opened the lamps also are brought readily to hand and the bulbs can easily be changed without fear of damaging the reflector in any way. The price at which the Trilux sells is £25 per pair finished in black enamel, and £25 10s. per pair in chrome nickel. They are handled by C. V.{VIENNA} Desiderio, 143 Whitfield Street, London, W.1. Temple Press Ltd., 5-15, Rosebery Avenue, E.C.1. | ||