946 



A Puller 



A SIM 



iX StCL- 



shown ill 

 metal i8 



Popular Science Montlih/ 



to Remove Steering Wheels 



on Automobiles 



PLE device for removing a 



ring wheel from its post is 



the illustration. It is made of 



in. long, I in. wide and l-o in- 



The puller and its applica- 

 tion on a steering wheel 



thiik. The bar is bent as 

 shown and a hole drilled and 

 tapped for a J-^-in. screw in the center. 

 The end of the screw is pointed to fit 

 into the center of the steering head 

 post. The two bent ends are hooked 

 under the cross-arms of the steering 

 wheel and the screw-end set in the 

 center of the post. It is only neces- 

 sary to apply a common wrench to 

 draw the wheel from its place quickly. 



Milk as a Lubricant for Drilling 

 in Copper 



SOME years ago a man came into 

 the writer's shop with a copper tube 

 having a J-s-'"- wall. He wanted fifteen 

 holes drilled into this tube with a No. 80 

 drill, which is somi'whal smaller than a 

 pin. The writer had a dozen drills of 

 this size on han<l so one of them was 

 placed in the chuck and the drilling 

 began. That is, it was intended that it 

 should begin. Hut no sooner did the 

 drill touch the tube than it snapjjed olT 

 like so much glass. Another drill was 

 tried using oil as a lubricant, with the 

 same result. Then soap water, difTerent 

 kinds of oil and e\'er>' known lubricant 

 were tried ])ut without avail, l-'inally 

 only one drill was left with not e\'en one 

 hole in tiie lube to show for the destruc- 

 tion of the other eleven. It seemed a 

 hopeless case. Then as a final resort 

 milk was tried and grcatK* to our 

 surprise all the holes were drilled with 



the last drill. This sounds incredible 

 but it is true, nevertheless. The milk 

 contains just enough oil to act as a 

 lubricant and enough water to act as a 

 cooling agent. This combination of oil 

 and water cannot be obtained in any 

 other form. Milk is not only useful in 

 drilling copper, but also in working it 

 in any manner. — Leslie S. Lyons. 



Lubricating the Working Joints of a 

 Pocket Knife 



POCKET knives naturally come in 

 close contact with the body and 

 for this reason they become dry and 

 rusty from the heat and perspiration. 

 Necessarily any lubricant must be of 

 some dry material. A very simple and 

 efficient, as well as cleanly method is to 

 use a little powdered graphite on the 

 joints. The graphite may be obtained 

 from the lead of a pencil. After applying 

 it, work the blades a few times to get it 

 into the joints. 



Compressing Automobile Leaf Springs 

 to Bolt Them 



THE problem of compressing the leaf 

 springs on a Ford was solved in the 

 following manner without the use of the 

 usual clamp. A large wrench was 



Drawing spring in close contact with 

 chassis frame for bolting it in position 



tightened into position, after which the 

 wrench was pulled to the right and the 

 spring was compressed and easih' bolted 

 into jiosition. The illustration shows 

 the nutlKKl of [irocedure. 



