Popular science monthly . Above: A reel which may beattached to the rear wheel ofany automobile intended forthe use of telephone com-panies, can roll up a half mileof wire in less than ten minutes Above: Unload-ing a five-tonreel of telephonecable withoutmanual labor byusing an ordin-ary drum-winchplaced directlyaft of the driv-ers seat. It isdriven by powerfrom the truckAt right: A lockdesigned to con-trol both thespark and throt-tle levers onau tomobi les

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Keywords: ., bookcentury1800, bookdecade1870, booksubjectscience, bookyear1872