. Scientific American Volume 78 Number 01 (January 1898) . TYPEWRITERS HALF PRICE VA^e will sell you any typewritermade for one half reguliir price,many for one quarter. Erery ina-chirie guaranteed in perfect SOLD, RENTED, ivithpriv-liege of examination. Send for III-UBtrated catalogue.~ • 2 CI711. i * National Typewriter Exchange, »»..^«s-. Sargents Artistic , Hardware i Elegant Trimmings In Hardware may be selected by you if you pro-pose building, well made and useful, too. Sendfor a copy of Sargents Book of De-signsi a book that will enable vou
. Scientific American Volume 78 Number 01 (January 1898) . TYPEWRITERS HALF PRICE VA^e will sell you any typewritermade for one half reguliir price,many for one quarter. Erery ina-chirie guaranteed in perfect SOLD, RENTED, ivithpriv-liege of examination. Send for III-UBtrated catalogue.~ • 2 CI711. i * National Typewriter Exchange, »»..^«s-. Sargents Artistic , Hardware i Elegant Trimmings In Hardware may be selected by you if you pro-pose building, well made and useful, too. Sendfor a copy of Sargents Book of De-signsi a book that will enable vou to selectsomething that will please. Sargent & Co,37 Chambers Street, New York. i Sargents [Easy Spring] Locks Cbe Cypewriter excbange. 1H Barclay NEW YORK166 Adams CHICAGO38 Court Square, BOSTON818 Wyandotte St,, KANSAS CITY, will save you from10 to 50!6 ou Typewri-ters of ail ^r Send for Catalogue ELECTRO MOTOR, SIMPLE, HOW TO make.—By G. M. Hopkins. Description of a s mall elec-tro motor devised and constructed with aview to as^iist-ine amateurs to make a motor which might be drivenwith advantage by a current derived from a buttery, andwhich would hao sufficient Pdwer to operate a footlathe or any requiring not ovei- one man pow-er. With 11 figures. Contained in Scientific Amer-ican SiTppLEMENT. No. «4I. Piicc 10 ceuts. To behad at this office and from ail newsdealers. e,m\m anaParts^—. of 8 Lt. Dynamo. Simple Elec-tric Motor and other Machinesdescribed in ^ci. Am. Supple-ments. Gas Engine Castings,Telephones and Electrical Sup-plies. Send stamp for catalogue. MIANUS ELECTRIC COMPANY. mm MIANUS. CONN. PERPETUAL MOTION A valuable series of papers giving all the classic formsof
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectdevice, booksubjecttb
