. Cassier's magazine. n,and the valves are designed for workingunder a pressure of 250 pounds. Fig. 2 illustrates the self-packingradiator valve, provided with a Jenkins-disc and non-rising stem. The packingconsists of a piece of vulcanised rubber,which can be easily renewed. The threads on the bonnet of thesevalves are the same size as those in theJenkins disc valves, made by the com-pany, and the old style trimmings maybe replaced with this new self-packingdevice without removing the valve fromthe radiator. It can also be applied, ifdesired, to any of the companys brass,wedge-gate valves wit
. Cassier's magazine. n,and the valves are designed for workingunder a pressure of 250 pounds. Fig. 2 illustrates the self-packingradiator valve, provided with a Jenkins-disc and non-rising stem. The packingconsists of a piece of vulcanised rubber,which can be easily renewed. The threads on the bonnet of thesevalves are the same size as those in theJenkins disc valves, made by the com-pany, and the old style trimmings maybe replaced with this new self-packingdevice without removing the valve fromthe radiator. It can also be applied, ifdesired, to any of the companys brass,wedge-gate valves with non-rising stem. IN the quarry processes of to-day thereis a wide field of usefulness for arock-cutting machine intermediate in itsfunctions between the heavy track chan-nelling machine andthe machine drill asapplied in the plugand feather methodof breaking rock. In the developmentof new quarrying properties also it isadvisable to prove up the value of thedeposit before heavy investments are A NewChannelling Machine. FIG. 2.—A SELF-PACKING RADIATOR VALVEMADE BY CRANE CO., CHICAGO MANUFACTURING NEWS
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Keywords: ., bookcentury1800, bookdecade1890, bookpublishernewyork, booksubjec
