. Electric railway journal . THREE ASPECT FLAGMAN—FIRST POSITION—PROCEED; SECONDPOSITION—SIGNAL SWINGING, STOP; THIRD POSITION—SIGNAL HANGING VERTICAL, STOP A New Electrical Insulation A new form of electrical insulating material calledCondensite-Cellulac is being placed on the market bythe Diamond State Fiber Company, Bridgeport, material is said to be entirely different in physicaland chemical characteristics from any other form offiber, hard rubber, mica or synthetic insulation. It issaid further to combine in great part the stable physi-cal and chemical properties, and high dielect
. Electric railway journal . THREE ASPECT FLAGMAN—FIRST POSITION—PROCEED; SECONDPOSITION—SIGNAL SWINGING, STOP; THIRD POSITION—SIGNAL HANGING VERTICAL, STOP A New Electrical Insulation A new form of electrical insulating material calledCondensite-Cellulac is being placed on the market bythe Diamond State Fiber Company, Bridgeport, material is said to be entirely different in physicaland chemical characteristics from any other form offiber, hard rubber, mica or synthetic insulation. It issaid further to combine in great part the stable physi-cal and chemical properties, and high dielectric resist-ance of condensite, which is employed in its manufac-ture, and the good qualities of the best grade of vul-canized fiber. These properties are summarized by themanufacturers thus: It is permanently anhydrous and. SHAPES IN WHICH NEW INSULATING MATERIAL IS ALREADYBEING MOLDED non-hygroscopic, and is impervious to the action of oiland ordinary acids or solvents. It is infusible and isnot affected by the action of heat within the range oftemperature ordinarily encountered. It is not fragileand will stand considerable vibration or shock. This insulating material is furnished in merchantableshapes, sheets, rods, tubes, etc., and is readily ma-chined. It may be formed into very thin sheets ( or less in thickness). It can also be supplied in thesoft uncured state, permitting of its being hardened in appears the word stop, and displays a red light at-tached to the banner. When no train is approachingthe banner is held to one side between two screens uponwhich is painted the phrase look and listen, and thelamp suspended from the banner is not lighted. If thecircuit through the holding magnets is broken, but theapparatus is otherwise in good condition, the bannerwill swing irrespective of the ap
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