Motion picture handbook; a guide for managers and operators of motion picture theatres ([c1916])

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FOR MANAGERS AND OPERATORS 677 formation of oxygen the instant it touches the "oxone." The water supply is usually so arranged that the water, by its weight, forms a pressure of air in the reservoir, and this pressure prevents it reaching the oxone, which is arranged somewhat as per Fig. 316. When the gasburner is opened some of the air escapes, which allows the water to rise and touch the cakes of sodium peroxide (oxone), whereupon gas is formed, the pressure increased, and the water again driven down until enough gas is used to decrease the pressure, and again allow it to rise and touch the cakes, thus releasing a new supply of gas, and so on until the cakes are entirely exhausted, whereupon the reservoir must be opened, cleaned, and a new supply of cakes and water put in. It is, of course, very essential that the reservoir be absolutely gas tight. W'hen the oxygen has been formed it may be combined with ether, or with high grade gasoline. This is accomplished in a Figure 316. part of the machine called the "Saturator." When the oxygen leaves the reservoir a portion enters a tube and is led directly to the burner. Another portion is led through a tube to the saturator, in which is a pad, usually made of flannel, saturated with ether, or high grade gasoline. The oxygen passes through the saturator, and is there loaded with ether or gasoline (as the case may be) vapor, which makes it inflammable, and enables it to act as a substitute for hydrogen. Caution: In warm weather, and when the saturator is nearly full, very little oxygen is required to vaporize the ether, and there is less danger of explosion (popping and snapping) than when the saturator is nearly empty or when it is very cold. The foregoing is merely intended to set forth the principle o o oooo o o o o o o o o o o o oo )0 OO OOO bo ooooo