The wonders of modern mechanismA résumé of recent progress in mechanical, physical, and engineering science . loweredto serve as a brake. The foot-cranks can be used whendesired, but, as the machine weighs one hundred and fortypounds, this would not be very often unless the rider wasfond of hard work. A speed of thirty-two miles an houron a macadamized road is claimed for the machine. Untilthe weight is reduced it can hardly compete with theHitchcock. An interesting motor bicycle has recently been patentedin Germany and has been introduced there and in Wolfmuller and Geisenhof a
The wonders of modern mechanismA résumé of recent progress in mechanical, physical, and engineering science . loweredto serve as a brake. The foot-cranks can be used whendesired, but, as the machine weighs one hundred and fortypounds, this would not be very often unless the rider wasfond of hard work. A speed of thirty-two miles an houron a macadamized road is claimed for the machine. Untilthe weight is reduced it can hardly compete with theHitchcock. An interesting motor bicycle has recently been patentedin Germany and has been introduced there and in Wolfmuller and Geisenhof are the inventors. Itsmechanism will be easily understood from the two dia-grams appended, taken from La Nature. It will be ob-served that the rear wheel is solid, instead of being made HORSELESS VEHICLES. 147 of light spokes. The reason giv^en for this construction isthat the little motor develops two and a half horse-power,and that if the rear wheel were made to weigh six pounds,as in many bicycles, there would be danger, in a wet spot,of its slipping and causing the engine to race in a danger- FiG. WoLFsaTLLER & Gelsenhofs Gasolixe Bicycle.—a, driving-wheel; B, steering-wheel ; C, D, E, F, G, H, frame tubes ; M, reservoir; N, evaporator; O,valve box ; P, lamp and ignition chamber; p. ignition tube ; R, Water reservoir;S, cock for regulating the entrance of gasoline into the evaporator; T, funnel ofthe evaporator; U, regulator of water for cooling cylinders; V, distributingmechanism ; \V, cylinders ; I J, connecting rod ; K, cam ; K, roller; K, rod ofthe distributing mechanism ; L, piston. ous manner. It is necessary to oppose more resistance tothe pistons. The mechanism is covered with wire guards,not shown in the accompanying illustration because theyobscure the parts. This bicycle weighs one hundred andten pounds, and the touch of a button serves to vary itsQ k 13 148 WONDERS OF MODERN MECHANISM, speed from three to twenty-three miles an hour. Theinventor
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