close the valve, R, in order to shut A NEW COVERING FOR BOILERS AND PIPES. artificial ice and in the refrigeration of cold storage off the water from the carbid. When the gasometer Where pipes are used for the conduction of steam buildings. When applied to these pipes, the covering descends, the… … Not many years ago acetylene gas was merely a pro- duct of the chemical |aboratory. Although the great light-value of acetylene was well known, the great cost of the gas prohibited its general introduction as an from the radiation of the heat. This causes not only illuminant. Acetylene may now be…
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