. Electric railway journal . heold hard-drawn wire has not wornwell but because there is a hammering of each support bythe pantograph. This is similar to the trouble experiencedby the New Haven Railroad, although, as the service is muchlighter than on that system, the effect has not been so notice-able. A No. 000 grooved, mild Siemens-Martin steel wirewill be used. Its conductivity is 13 per cent that of elongation is 3^-2 per cent and its ultimate strength andelastic limit are 75,000 lb. and 50,000 lb. per sq. in. respect-ively. The contact wire will be suspended below the con-duct
. Electric railway journal . heold hard-drawn wire has not wornwell but because there is a hammering of each support bythe pantograph. This is similar to the trouble experiencedby the New Haven Railroad, although, as the service is muchlighter than on that system, the effect has not been so notice-able. A No. 000 grooved, mild Siemens-Martin steel wirewill be used. Its conductivity is 13 per cent that of elongation is 3^-2 per cent and its ultimate strength andelastic limit are 75,000 lb. and 50,000 lb. per sq. in. respect-ively. The contact wire will be suspended below the con-ductor wire by means of single bolt hangers. These hangersare similar to those used by the New Haven Railroad exceptthat a bolt with spring washer is used in place of flat-headmachine screws. The supervisor estimates that, workingwhen power is off each night, it will require fifty days to in-stall the new wire. This will be done with the regular forceand without in any way interrupting service. AN ITALIAN 1300-VOLT D. C. RAILWAY. Line Car In an address before the convention of the National As-sociation of Manufacturers, May 21, at the Hotel Pontchar-train, Detroit, Mich., Gilbert H. Montague, of the NewYork bar, assailed the Oldfield bill and other efforts atpatent reform as endangering the present satisfactory anduseful system on which the industrial prosperity of thecountry is foundationed. Mr. Montague insisted that theSherman law, properly administered, will cover all thepoints in the Oldfield bill and declared that any tendencyto restrict invention must undermine American supremacyin the industrial arts. At the present time, he pointed 35,000 United States patents being issued annually con-stitute more than one-third of those granted by all thecountries of the civilized world. Forty years ago, saidthe speaker, an effort was made to amend the United Statespatent system so that anyone by paying a fixed royalty tothe patentee might carry on the manufacture of an inven-tio
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