484 POPULAR SCIENCE MONTHLY. 



ployed. The position of the motor, with reference to the carriage 

 wheel, in the single motor design, is shown in Fig. 8. The gear at- 

 tached to the carriage wheel is used also as a brake wheel, a friction 

 band being located so as to bear against the periphery, while the pinion 

 on the end of the motor shaft meshes into teeth on the inner side of 

 the rim. This single motor design is also used in the omnibus made 

 by the Columbia Company, a number of which are now in regular ser- 

 vice on Fifth avenue, New York. These omnibuses, which are illus- 

 trated in Fig. 9, seat eight passengers, and are able to carry as many 

 as are willing to crowd into them. One feature of the electric motor 



■I 



Fig. 8. Position of Motor in the Single Motor Design. 



which fits it admirably for automobile service is the fact that for a 

 short time it can put forth an effort far greater than its normal capacity, 

 and it can do this at all times, without any special preparation. Owing 

 to this feature it is practically impossible to stall the vehicle. If the 

 wheels run into a rut or sink into a mud hole, the motor will be able 

 to turn them around, and if they do not slip the carriage will be moved 

 ahead. 



The management of the vehicle is exceedingly simple and entirely 

 free from care, the driver having nothing to tax his mind but the 

 steering lever and the handle of the controlling switch. As the mov- 

 ing parts all have a rotatory motion and are perfectly balanced, there 

 is no possibility of vibration, and there is an entire absence of heat or 

 disagreeable odors. 



Any one who has observed the action of a two-horse team will have- 

 noticed that, unless the pavement is very smooth, the tongue con- 



