The Birmingham age-herald., 1902-06-16
MooRE'S COOLING MACHINE.
Weather Chief Exhibits His New Alp
 paratus.

 Washington Special to N. Y. Commercial.
 The gravity apparatus for cooling dwellings invented by Prof Willis L. Moore, chief of the weather bureau. pat ents for which were recently secured, has been placed in operation for public dem onstration. The machine looks like cylinder stove, and the inventor claims will in time come to be as essential to the comfort of a dwelling in summer as heating apparatus In winter. Professor Moore says that the cost of cooling a given space with his machine is approxi- mately the same as that of heating the same space by means of a stove or fur mace. Besides this. the different uses to which the machine may be put are un- limited. He expects it to prove of great value to hospitals, particularly for reduc- ing the temperature of wards in which fever patients are confined, and in addi- tion to its use for cooling residences and hotels he says 1t solves the problem of individual cold storage. Secretary of Az riculture Wilson. after viewing the work ings of the gravity machine, ordered that one be placed in his private office, and number of other officials of the Department of agriculture and the Weather Bureau have followed hls ex- ample.
 Prof. Moore's invention, in addition to reducing the temperature, cleanses and renders the air dry and healthful. Hot air, filled with dust, was taken into the machine at a tempera ture of nearly 100 degrees and expelled almost instantly at a temperature of 30 degrees and with it's relative humidity lcssened by more than half.
 The gravity machine operates, as Its name implies, on the principle of gray ity. That Is, it makes use of the diff ference in weight between air at high and at a low temperature. The gravity cooler is moreover, automatic. It works solely on the principle of gravity. requires no motive power and is self-adtusting When the weather Is very hot the ma chine works faster that when 1t is only moderately warm, and when the weather Is temperate the machine ceases its oper- ations altogether. It Is necessary to charge the machine only once a day, preferably in the morning, and 1t will then automatically keep the dwelling in which 1t is placed at a cool, even temperature.
 Secretary ot Agriculture Wilson had heard of Professor Moore's machine and walked to the weather bureau from church Sunday morning. MT. Wilson was warm after his walk, and told Professor Moore he wanted to be '.cooled off," He was taken to the roc m where tho ma chine was in operation, and few minutes later buttoned up his coat and remarked that ne did net care to be frozen to death in summer.
 The machine in operation at the weather bureau is much too large for the room in which it Is placed. and makes the room feel like the cold storage de- I.artment of a packing house.
 It is of the size intended for a hospital ward. and was built for experimental pur- poses
 Professor Moore says that as soon as the foreign patents were granted he would make public the formula of the compound with which the machine is charged. He said, however. that the com position contained no ammonia, nor any of the usual ingredients of ordinary freezing mixtures.
 The ro om in which tho machine was in operation contained 4OOO cubic feet of air, and, although the doors were being opened end closed every few minutes, the temperature renamed below GO de- grees and the room was much too cold for comfort.