Show pneumatic cutoff cut off the foll following cutout cut out has been designed by emil petersen of copenhagen and has been used by b him in for some some time for automatically cutting out a charged battery one of the boxes is hermetically sealed through the cover passes three glass tubes two are bent to V shape and are filled with mercury which has its wire contacts in the tube the third tube passes parses into a metallic tube which is is provided with a valve at the I 1 far end this valve stands under the immediate control of an electromagnet whose circuit is closed or opened bythe by the mercury when the cells begin to gas noticeably the mercury is pushed up and the aux auxiliary ilary circuit is close 1 the valve is now opened and at the same time the charging circuit broken the gas can escape while the chaeff charging inc circuit remains open until I 1 closed again by hand in order to pr e em oscillations of the mercur mercury y the bore of it 1 tube is made small so that the motion of the mercury is impeded the apparatus can aas easily ily be provided with a bell which warns 6 the e dynamo attendant that the cells are charged denver mining reporter it is reported that loose and hatfield have secured a bond and lease on the grizzly at alta for |