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.
676 MOTION PICTURE HANDBOOK
In this connection the following letter taken from the Projection Department of The Moving Picture World, July 5, 1913, is of sufficient value to warrant receiving space. The letter is from Mr. George A. Kraus, Magellan, New Mexico. Mr. Kraus says:
"My own experience with gas-making outfits, after having tried every American make, as well as one outfit imported from England, is that the Model B Calcium Gas Machine, manufactured by the Enterprise Optical Company, Chicago, is the lightest and most simple in operation. It can be set up and charged, ready for use in from five to ten minutes. There is never more than one pound pressure on the machine. When in use the water in the upper tank regulates the gas. So long as one uses the gas generated, the water in the upper tank lowers to the lower one, generating gas as needed. The moment you shut off the gas the machine stops generating. After the show, drain off the water and take off the standpipe. Should there be any oxone left over, it can be used again the next time the machine Is charged. I have run three continuous shows, of three reels each, with one charge of 30 cakes of oxone, but the saturator has to be recharged after every performance. I have two saturators connected with the standpipe of one, which gives sufficient hydrogen for the three shows without recharging. I project a 12-foot picture at 41 feet, using my Model B gas machine, and get plenty of light. For road work or permanent location the Model B could not be too highly recommended."
It is not my purpose to give directions for the operation of these outfits, as full and very complete directions accompany them when purchased. Suffice to say they are all quite practical, reasonably simple in operation, and capable of producing a very good light, at a cost which is not very much different from the cost of tank gas, when distances of shipment of tanks is averaged, always provided they be handled with intelligence, be kept scrupulously clean, and that the directions supplied by the manufacturers be explicitly followed.
Don't imagine you can produce good limelight by careless, sloppy methods. It simply can't be done. The illumination is a comparatively weak one at best, and good results are hard to get (for moving picture projection} under the best conditions. This is all the more reason why the limelight user should exercise every care to get every possible bit of light brilliancy his outfit is capable of producing.
The gasmaking outfits make the gas as it is used. This is accomplished by the use of sodium peroxide, which, when properly prepared and brought into contact with water, gives off approximately 300 times its own bulk in oxone. The sodium peroxide is made into cakes and is usually sold under the trade name "Oxone," though some manufacturers use other trade names, one of which is "oxylithe." These cakes are placed in a reservoir, which forms the greater part of the gas making machine, and water is added, which causes the