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POPULAR SCIENCE MONTHLY. 



the axle. The American designer, however, would in most eases be 

 controlled more by the artistic appearance and would use a single chain 

 which would be placed under the body of the carriage, and thus as much 

 out of sight as possible. 



Fig. 16 shows an English design of electric dog cart. The mechan- 

 ism consists of a single motor which is connected with the axle by means 

 of spur gearing, this being so arranged that several different speeds can 

 be obtained for the vehicle with the same velocity for the motor. To 

 obtain variable speeds by means of gearing it is necessary to introduce 

 a considerable amount of complication, and in thi< country the opinion 





of mosl designers appeals to be that the gain effected thereby is not 

 sufficient t<> compensate for the increased complication, and differential 

 speed gearing is not often used. 



A comparison of Figs 14 and 16 with 6 and 9 will clearly show that 

 in so far as artistic effeci is concerned, our manufacturers of electric 

 vehicles have little to learn from Europeans, although the industry here' 

 is much younger than abroad. As to the operative merits, all that can 

 be said is tbat the American carriages run so well and possess such en- 

 durance that it is probable that they are not second U> any in these 

 respects. 



