New Sport for Boys. 



Electric Self-Starter. 



Fishing Bait of New Design. 



new plug has a cylindrical shell with a 

 short thread instead of the usual screw 

 shell with many threads. Furthermore, 

 the center contact member is fitted with 

 a spring which exerts sufficient pressure 

 on it so that the plug is firmly held in a 

 receptacle and at the same time estab- 

 lishing good electrical contact. The plug 

 will not loosen from vibration, and it 

 may be taken out of a receptacle with- 

 out arcing. 



The unicycle is made in three sizes, 

 the smallest having a 48-inch hoop, the 

 next a 54-inch hoop, and the largest a 

 6o-inch hoop. The respective weights of 

 these various sized machines are 22, 23 

 and 25 pounds. There is nothing fragile 

 in the construction of the unicycle, and 

 anyone weighing even in excess of 150 

 pounds can safely ride on any of the 

 models. 



A New Sport for Boys 



What promises to be a most popular 

 sport for boys is offered by a recently 

 devised type of vehicle known as the 

 "unicycle". In reality, this vehicle con- 

 sists of a large hoop on which is mounted 

 a framework carrying the seat and pro- 

 vided with two smaller wheels. The 

 hoop is made of one-half inch gas pipe 

 welded into a ring, while the framework 

 is of durable wood. 



The unicycle affords much fun to the 

 boys and is a sport that is entirely unique 

 and incomparable to existing ones. Its 

 main use is for coasting, in which it is 

 possible to attain high speeds. The rider 

 rests on the seat and keeps his feet off 

 the ground. The small wheels are also 

 raised off the ground so that the rider is 

 actually being carried by the hoop alone. 

 The device is so light that it can be im- 

 mediately controlled by placing the feet 

 on the ground, either to steer it or slack- 

 en the speed, as well as to bring it to a 

 stop. 



An Electric Self-Starter 



One of the leading electrical manu- 

 facturing companies has recently placed 

 on the market an electric self -starting 

 and lighting system for Ford cars. 



The principal member of the system 

 is a single electric machine which is used 

 both as the generator and motor. It is 

 wound for twelve volts and is employed 

 in conjunction with a six-cell, 42-ampere 

 hour battery. This battery serves the 

 function of starting the car as well as 

 furnishing current to the head, side and 

 tail lights. 



The motor-generator member of the 

 equipment weighs about 52 pounds and 

 is supported rigidly on the right-hand 

 side of a Ford engine by means of a 

 pressed steel bracket secured at three 

 points. The storage battery is carried 

 on the right-hand running board of the 

 car. When the automobile has attained 

 a speed of about eleven miles per hour, 

 the electric machine acts as a generator 

 developing an electromotive force suffi- 



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