Popular Science Monthly 



731 



A Tomahawk Grease-Gun 



COMBINING the advantages of a 

 grease-gun with that of a spring- 

 separating device, the tomahawk spring 

 lubricator is a most interesting new tool. 

 As the illustration shows, it is a small 

 steel tomahawk, the hollow handle of 

 which is filled with soft graphite lubri- 

 cant. By a turn of the wrist, this lubri- 

 cant is forced through a canal into the 

 "edge" of the tomahawk, and thence be- 

 tween the leaves of the creaking spring. 

 The directions for this tool are the 

 simplest: Hold the edge of the hatchet 

 against the spring to be lubricated, strike 

 a blow with a hammer on the striking 

 butt and turn the handle with the left 

 hand. A goodly quantity of lubricant is 

 promptly forced between the spring 

 leaves. Although the tool is particularly 

 intended for small cars, it can be used 

 on any sized spring on automobiles or 

 trucks. All that is necessary is a heavier 

 hammer and a stronger blow. 



A Socket-Protecting Knot 



AMONG the essentials required in 

 L the electrical element of factory 

 operation is the convenience of the 

 adaptable extension lamp. Considerable 

 trouble is experienced in making plugs 

 and sockets last more than a few weeks. 



This switch grounds the magneto and 

 makes automobile thievery impossible 



Here is a device that saves hours of time 

 in greasing the leaves of automobile springs 



Hence the scheme of putting a knot in 

 their terminal wires, near the socket, be- 

 fore attaching to the cord. This serves 

 for relieving strains and excessive bend- 

 ing of the wires, which in a short time 

 break off, if left straight. Thus the life 

 of the plug or socket is lengthened ten- 

 fold. This is a simple expedient, but it 

 works. 



Device Prevents Automobiles From 

 Being Stolen 



ANEW device intended for the 

 safety of people who leave their 

 automobiles standing on the street or 

 in a public parking space f6r long 

 periods, has been invented. This is 

 merely a switch which, when the plug 

 is removed, grounds the magneto and 

 prevents the engine from being start- 

 ed. When the plug is pushed in as 

 far as it will go, the switch does not 

 make contact ; consequently the mag- 

 neto is free from grounds. When the 

 ])hig is pulled even part way out. the 

 switch makes contact and the magneto 

 is grounded, thus stopping the engine. 

 This condition, of course, continues 

 when the button is entirely removed. 

 No other type of plug could pos- 

 sibly be used to start the car. A ring 

 on the plug can be attached to one's 

 key-ring so that it will not be lost or 

 misplaced. 



