Science for beginners . ht. 5. In case gasoline is spilled by accident, or has leaked fromthe receptacle, open wide the doors and windows of the roomto change the air completely before bringing a flame into theroom. Also thoroughly ventilate all cupboards and closets inwhich there is a possible chance of the air having become sat-urated with the gasoline vapor. If these precautions are observed there will be but littledanger in handling gasoline. 34 THE PRODUCTION AND USE OF LIGHT VI. THE GASOLINE GAS MACHINE 38. Gasoline Easily Vaporizes.—We have seen that gaso-line exposed to the air vaporiz
Science for beginners . ht. 5. In case gasoline is spilled by accident, or has leaked fromthe receptacle, open wide the doors and windows of the roomto change the air completely before bringing a flame into theroom. Also thoroughly ventilate all cupboards and closets inwhich there is a possible chance of the air having become sat-urated with the gasoline vapor. If these precautions are observed there will be but littledanger in handling gasoline. 34 THE PRODUCTION AND USE OF LIGHT VI. THE GASOLINE GAS MACHINE 38. Gasoline Easily Vaporizes.—We have seen that gaso-line exposed to the air vaporizes rapidly. We have also seenthat if any considerable quantity of gasoline remains exposedto the air of a room for a short time that the air becomes socharged with vapor of gasoline that it burns readily. Infact, the mixture frequently explodes violently when a flameis brought near. This is the cause of most accidents whichoccur from the careless use of gasoline. Because gasoline does evaporate so readily when exposed. Blower Mixer Fig. 15.—A gasoline gas machine. Carbureter to air it is possible, by using a properly constructed machine,to produce gasoline gas. Several gasoline gas machines arenow in use furnishing gasoline gas for use in country resi-dences and in school buildings which are out of reach of acity supply of common illuminating gas. 39. Gasoline Gas Machines.—There are several differenttypes of gasoline gas machines. Every machine must, how-ever, consist of two distinct and different parts and usuallypossesses a third. The essential parts are a blower or pump,and a carbureter. The third part is called a mixer. The Blower is a simple device for forcing a current of air THE GASOLINE GAS MACHINE 35 out through the carbureter and back into the pipes of thebuilding. It maintains the pressure on the gas. Fig. 15shows a common form of blower. It consists of a large fanoperated by means of a heavy weight. The weight is woundup at intervals as required. It exerts a
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