Journal of the Society of Motion Picture Engineers (1930-1949)

Record Details:

Something wrong or inaccurate about this page? Let us Know!

Thanks for helping us continually improve the quality of the Lantern search engine for all of our users! We have millions of scanned pages, so user reports are incredibly helpful for us to identify places where we can improve and update the metadata.

Please describe the issue below, and click "Submit" to send your comments to our team! If you'd prefer, you can also send us an email to mhdl@commarts.wisc.edu with your comments.




We use Optical Character Recognition (OCR) during our scanning and processing workflow to make the content of each page searchable. You can view the automatically generated text below as well as copy and paste individual pieces of text to quote in your own work.

Text recognition is never 100% accurate. Many parts of the scanned page may not be reflected in the OCR text output, including: images, page layout, certain fonts or handwriting.

416 PETER MOLE tf. S. M. P. E. generator end of the frame to avoid having to conduct the heat radiated by the engine and its exhaust pipes over the generator. The generator is self-ventilated, and in many hours of service has proved well adapted for the purposes for which it had been designed. This little power plant is six feet long, two feet wide, and three feet, ten inches high, weighing only 2100 pounds, so that it may be readily transported from place to place on a truck carrying additional equipment. It is covered completely by a sheet metal housing insulated with sound-proofing material; the housing is made in sections to facilitate repairing. The unique feature of the plant is the system of voltage control and engine governing. The use of filament lamps has made close FIG. 3. 160-kw., gas-electric generator set. control of the voltage very necessary, since a sudden rise of voltage, due to a reduction of the load, tends to burn out the lamps. During the nominal shooting period it is essential that the voltage be maintained constant, in order that the illumination of the units be uniformly maintained. Hand control is inadequate, because the least inattention on the part of the operator might allow wide voltage fluctuations and consequent detrimental effects. In taking sound pictures it is essential that the generating equipment operate as silently as possible, as often the locations are in canyons and valleys, the reverberation characteristics of which make noisy equipment impracticable. Adequate muffling of the exhaust and the use of suitable sound-insulated housing in these modem