. Pacific Gas and Electric magazine. cranks. The essential difference betweenthe various types is in the contact on the endof the switch arms to the parts normallyhot. For instance, in one type the switch armwas split, making the end forked. When thrown in this contact straddled the line wireand so performed its work. In another type,the end of the switch arm was a flat metal. surface, which when thrown in was pressedagainst a metal bracket mounted, usually, onone of the air switch insulators. The accompanying sketches will give afair idea of the grounding and shorting de-vice recently install
. Pacific Gas and Electric magazine. cranks. The essential difference betweenthe various types is in the contact on the endof the switch arms to the parts normallyhot. For instance, in one type the switch armwas split, making the end forked. When thrown in this contact straddled the line wireand so performed its work. In another type,the end of the switch arm was a flat metal. surface, which when thrown in was pressedagainst a metal bracket mounted, usually, onone of the air switch insulators. The accompanying sketches will give afair idea of the grounding and shorting de-vice recently installed at Colgate on the threeBay lines, the operation of which is practic-ally the same as those mentioned above. Abracket, to which a regular switch jaw isfastened, is mounted on the clamps, on oneof the main line switches, and when put intoservice guarantees a good and reliable con-tact with the ground. 215 Noting Progress of the Worlds Fair During the past month two states and oneforeign country have been added to the Hstof announced participants in the Panama-Pacific Exposition that have picked out theground on which their buildings will beerected. Ohio selected her site October 1 0th, Gov-ernor Judson Harmon coming to San Fran-cisco in person to perform the ceremony. AllSan Francisco turned out to greet GovernorHarmon and gave him cordial welcome. Atthe dedication ce
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