. The Street railway journal . bolts, and turnbuckles, where a snug fit is re-quired, my experience has been that the electrolytic processis better, as in the employment of the hot process for thiskind of work it is necessary to run over the bolt with a die,or in the case of the nut to retap. This would remove thegalvanizing done by the hot process. * * * In the case ofcoach or wood screws the hot process is better, as it givesus a heavy coating. The hot process would likewise applybetter to washers, cross-arm braces, and anchor or groundrods, because the zinc is thicker. H. Frederic Frasse, P
. The Street railway journal . bolts, and turnbuckles, where a snug fit is re-quired, my experience has been that the electrolytic processis better, as in the employment of the hot process for thiskind of work it is necessary to run over the bolt with a die,or in the case of the nut to retap. This would remove thegalvanizing done by the hot process. * * * In the case ofcoach or wood screws the hot process is better, as it givesus a heavy coating. The hot process would likewise applybetter to washers, cross-arm braces, and anchor or groundrods, because the zinc is thicker. H. Frederic Frasse, Purchasing AgentEdison Electric Illuminating Company, Brooklyn, N. Y. August 17, 1907.] STREET RAILWAY JOURNAL. 267 AN ELECTRIC DRILL FOR HEAVY WORK An electric drill especially designed for heavy drillingand reaming has been placed on the market by the VanDorn Electric & Manufacturing Company, of this drill the motors are of the enclosed type, ventilatedby means of holes in the top and bottom heads and in the. ELECTRIC DRILL FOR HEAVY WORK sides of the machine, air being drawn in through the venti-lating holes and forced out through the vent holes in theside. The drills are made in four different sizes, Nos. 0,1, 2 and 3, and are wound for 110 and 220 volts, direct cur-rent. The No. o machine is equipped with a Jacobs chuck,taking in sizes from o to 5/16 drill. The Nos. 1, 2 and 3machines are equipped with standard Morse taper sockets,according to these numbers, taking in the drills that fitthese sockets. The upper and lower thrust are ball bear-ings. All other bearings are of phosphor bronze. Thegearing and all other gearing parts are made of machinesteel case-hardened. A movement of a quarter turn of aknurled ring starts or stops the machine, so it is at all timesunder instant control of the operator. Each machine isequipped with an armored cable grounded to the machine. +++ EXCESSIVE SPRINKLING IN DETROIT The question of track sprinkling in Detroit has assumeda
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
