. Scientific American Volume 91 Number 09 (August 1904). Carriage Motors For Bicycle, Contactor Jump Spark One Piece Casting. LightWeight. Large Bearing Sur-faces. Write us to-day GRANT-FERRIS CO. Troy, N. Y. The Franklin Model Shop. Experimental work for inventors: any-thing in metal from a single piece to acomplete working model. Apparatus forcolleges. Exhibition models. Introduc-tion samples of patented articles. Spe-cial tools for making metal perfected. Drawings and de-signs worked out, from inventors ideas*Send for circular 9. , & WEED,129-131 West 31st Stree
. Scientific American Volume 91 Number 09 (August 1904). Carriage Motors For Bicycle, Contactor Jump Spark One Piece Casting. LightWeight. Large Bearing Sur-faces. Write us to-day GRANT-FERRIS CO. Troy, N. Y. The Franklin Model Shop. Experimental work for inventors: any-thing in metal from a single piece to acomplete working model. Apparatus forcolleges. Exhibition models. Introduc-tion samples of patented articles. Spe-cial tools for making metal perfected. Drawings and de-signs worked out, from inventors ideas*Send for circular 9. , & WEED,129-131 West 31st Street, New York. 1YTATTCM JYIACMINERY« BIG MONEY IN MATURES. We manufacture everything pertaining to the busi-ness. The Very ^Latest Process. We will furnisha manager or teach anv purchaser the W. MURPHY & BRO., 1118 Asnland Block, Chicago, 111., U. S. ?8u USE GRINDSTONES P [f so we can suppiy you. All sizesmounted and unmounted, alwayskent in stock. Remember, we make aspecialtyof selecting stones for all spe-cial purposes. *SW Ask for catalogue. The CLEVELAND STONE CO. 2d Floor. Wilshire, Cleveland, 0. (? The St. Louis fair will be reviewed in its technicalaspect in the columns of theScientific Jlmericah Sup-plement. Each number of the Scien-tific Jimerican Supplementcontains one or more articles onthe Engineering and ScientificExhibits of the Fair, illustratedwith photographs especially takenfor us. If you cannot go to the Fairyou can at least learn all aboutits technical novelties by readingthe Scientific JimericanSupplement. Each number costs JOc* by through your newsdealeror from MUNN & CO., Publishers 36i Broadway, New York Luggage carrier, G. Lederman 767,823 Mail bag holder, N. Olson 767,428 Massaging implement, A. U. Patchen 767,593 Match receptacle, burned and unburned, H. S. Alexander 767,675 Measuring inst
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