A Well-equipped Sound-film Vehicle
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'WHAT is claimed to be the most VV comprehensively equipped soundfilm vehicle yet produced has just been put into operation by Revelation Films, Ltd., for publicity work. The machine used is a specially adapted Dennis 4-tonner, supplied by Pass and Joyce, Ltd., with coachwork designed expressly for the purpose by Mr. A. H. Pass and built by Dennis Brothers, Ltd.
The equipment includes the latest Super-Parvo recording and photographic apparatus. and complete lighting and generating plant. The body has accommodation for a staff of four, in addition to the driver. It incorporates a sliding roof and roller shutters at the rear. Owing to the fact that the generating set weighs 2i tons, special attention has been paid to chassis suspension. When fully loaded the complete vehicle weighs 8 tons 6 cwt. It is privately licensed and can, accordingly, travel at 30 m.p.h. The petrol-electric generating set comprises a four-cylindered engine of Ricardo design, built by F. Perkins, Ltd., which develops 100 b.h.p. at 1,200 r.p.m., and is mounted with its auxiliaries on a welded steel frame. The lubrication system is of the dry-sump • type, incorporating no fewer than three pumps, a cooler and a filter. The dynamo is a product of Pulver and Co., Ltd. It is of special construction, being arranged for three-wire operation and having two commutators with an output of 28 kw. each.