292 



Popular Science Monthly 



Hand Sled Propeller Made of Dis- 

 carded Buggy Wheels 



FOR ice and smooth, level, well packed 

 snow, this is a very fine sled pro- 

 peller. It is made of two old buggy 

 wheels with the spokes sawed ofif just 

 where each one enters the felloes. The 



Propelling the sled over smooth snow and ice 

 by turning the shaft between the supports 



axle holes in each hub should be plugged 

 with wood. 



For a shaft, take a 3^-in. rod and bend 

 it in the form of a crank. To support 

 this shaft, two hardwood pieces 20 in. 

 long, 4 in. wide and 2 in. thick are needed. 

 These support posts should be fastened 

 to the top of the sled by means of screws. 

 A K-in. hole, bored through the top of 

 each, should be slightly reamed out with 

 a hot iron in order to make a suitable 

 bearing for the shaft. When the shaft 

 has been placed, the wheels should be 



' The buggy wheels arc fastened on the ends of 

 a shaft bent to form a crank in the center 



fastened in place on either end of the 

 Bhaft. This is done by driving each end 

 of the shaft into holes bored through 

 the wooden plug in each wheel. 



The end of each spoke should be 

 sharpened and an 8d. finishing nail driven 



in up to the head. By using a file, this 

 head may be sharpened to a point. 

 Thus the nail heads will do the pushing 

 without allowing the spokes to slip on a 

 smooth surface. 



It is evident that when a boy, sitting 

 on the sled, turns the crank, the wheels 

 will revolve, thus easily propelling the sled 

 over the ice or snow. — F. E. Brimmer. 



The Most Convenient Way to Lock 

 a Motorcycle 



IF it's a three-speed motorcycle that 

 you have, simply lock the gear- 

 shifting lever in neutral position by snap- 

 ping your lock in the guide-slot. This 

 method has the advantages over the 

 ordinary scheme of chaining and locking 

 the wheels, in that you will have no diffi- 

 culty in moving your machine about in 

 the garage, nor will you have to soil your 



Two ways of locking a gear shift lever on 

 a motorcycle to prevent its being stolen 



hands while putting the lock either on or 

 off. This same principle can be used if 

 you have a single-speed cycle, by drilling 

 a hole through the lever and the guide- 

 bar, so that the lever can be locked when 

 in the "free" position. Always remember 

 that it pays to buy a good lock. 



How to Straighten a Bent Rim 

 on a Headlight 



LAMPS are about the first part of an 

 u automobile to sustain an injury in a 

 wreck or accident, as the spun metal is 

 very thin and will become dented with a 

 slight blow. Dents on the rims or other 

 parts of the lamp may be straightened as 

 follows: Take the other lamp and pour 

 melted babbit metal into the part that is 

 bent in its mate. When the metal has 

 cooled, it is used as an anvil to straighten 

 the bent part. For hammering the 

 metal, use a rubber or soft faced hammer. 



