Publication: Street Railway Journal
New York, NY, United States
INSULATORS, INCLUDING THIRD RAIL
AETNA INSULATING COMPOUND. This compound is manufactured especially for electric railway insulation. The various forms in which it is made are obtained by pressing the compound in dies under high pressure. The finished product, as used for insulation in trolley line suspensions, strain insulators, third rail insulators, etc., is extremely tough, and impervious to weather exposure. It is the first of this class of insulating compounds for electric railway use, and has come into extensive use in all civilized parts of the world. —ALBERT & J. M. ANDERSON MANUFACTURING COMPANY, BOSTON, MASS.
ELECTROSE INSULATOR PINS. Are made in various sizes and of any form to meet regular and special requirements. Electrose pins possess great strength combined with the highest possible form of electrical insulation. —ELECTROSE MANUFACTURING COMPANY, BROOKLYN, N. Y.
ELECTROSE INSULATORS. H. W. Buck, chief engineer of the Canadian Niagara Power Company, in a published statement, said: "This material is a very good insulator, is very strong mechanically and is entirely free from cracks and other defects which are common in glass and porcelain. Electrose insulators have been used on the Buffalo transmission lines of the Niagara Falls Power Company for the past three years, and they are the only insulators on those lines which have caused no trouble." Made in sizes ranging from 1,000 to 250,000 volts. —ELECTROSE MANUFACTURING COMPANY, BROOKLYN, N. Y.
GENERAL ELECTRIC THIRD RAIL INSULATORS. These insulators are furnished for standard or special work. Malleable iron supports are used with reconstructed granite or vitrihed clay forming the insulator proper. —GENERAL ELECTRIC COMPANY, SCHENECTADY, N. Y.
HEMINGRAY INSULATORS. These insulators are of the screw glass type with special drip petticoats. —THE HEMINGRAY GLASS COMPANY, COVINGTON, KY.
INSULATORS. Made by the JEFFREY MANUFACTURING COMPANY, COLUMBUS, OHIO.
J-M THIRD RAIL INSULATORS. Reconstructed granite consists of selected orthoclase granite pulverized, moulded into any desired form under heavy pressure, and then fused into a solid mass at a temperature approximating 3,000° F. It is highly glazed, and being vitreous, does not contain or absorb moisture. It is of unlimited durability, not being affected by heat, cold or any commercial acids or alkalies. Its crushing strength is about 15,000 lbs. per cu. in., and its tensile strength 1,000 lbs. per sq. in. of cross section. After years of severe test in all sorts of climatic conditions, it has been generally adopted throughout the world for third rail insulation. —H. W. JOHNS-MANVILLE COMPANY, NEW YORK.
"OHIO BRASS" THIRD RAIL INSULATORS. Made from semi-porcelain, which possesses great mechanical strength, best of insulating qualities, and is low in cost. The castings are all of malleable iron. A large number of types of third rail insulators arc made to suit various requirements. —THE OHIO BRASS COMPANY, MANSFIELD, OHIO.
RECONSTRUCTED GRANITE INSULATORS. Composed of selected orthoclase granite, pulverized moulded into any desired form under heavy pressure, and then fused into one solid mass at a temperateur approximating 3,000 deg. F. They are well vitrified, highly glazed, and possess unlimited durability, not being affected by hot or cold nor by acids. The material shows high crushing strength and high ohmic resistance. The company controls several patented types of third rail insulators, among which are the "Courtenay," "Lawrencourt" and "Crossbar" varieties, and also makes a specialty of executing orders for insulators from the owners of other types. —RECONSTRUCTED GRANITE COMPANY, NEW YORK.
VICTOR INSULATORS. Thar electric current may be confined to the circuit which shall convey it, glass or porcelain in the form of shells nested and cemented together is introduced be