580 



Popular Science Monthly 



It took five men to throw Moses to the ground, 

 "hog tie" him and then shoe him properly 



Moses Didn't Want to be Shod. So 

 They '*Hog-Tied" Him 



WHEN forest rangers and government 

 engineers are in the field many miles 

 away from the nearest town, they frequent- 

 ly have to do their own horseshoeing. This 

 is a comparatively easy task if the animal 

 is tractable and accustomed to the opera- 

 tion. But often the men have to "hog-tie" 

 their horses — that is, throw them to the 

 ground and tie their feet together. To 

 throw a horse to the ground without injur- 

 ing him is no tenderfoot's job. It requires 

 much patience and muscular power. 



The horse shown in the illustration is 

 Moses, one of the animals attached to a 

 topographical engineering party in Oregon. 

 Moses wouldn't stand and allow his captors 

 to shoe him. Consequently he was forced 

 to submit to all the indignities of the hog- 

 tie. Three men are holding his feet by 

 ropes, one is holding his head and the other, 

 leaning over him, is doing the shoeing under 

 difficulties. The sixth man in the party 

 has a cub bear skin which he is tacking to 

 a dead tree. When the men have finished 

 shoeing Moses they will roll him over so 

 that he will be on the down-hill side. This 

 is the only position in which he can regain 

 his newly-shod feet without considerable 

 danger of hurting himself. 



An Alarm That Warns You 

 of a Leaking Tire 



IT frequently happens that air leaks slowly 

 from a tire without the driver's knowing 

 it. The tire becomes flat and the rims of 

 the wheel cut into it. To warn drivers in 

 time, GeOrge F. Young, of Indianapolis, 

 Indiana, has invented an electric alarm 

 which can be attached to any wheel. It 

 consists of an electric switch which is 

 mounted on the axle of a wheel. The blade 

 of this switch projects toward the spokes 

 of the wheel." The end of the blade stops 

 very close to the spokes, though enough 

 space is left to enable the blade to barely 

 clear them. 



Working in conjunction with the blade 

 of the switch is a metal finger mounted on 

 one of the spokes of the wheel. This finger 

 can slide radially to the wheel, but a spring 

 normally holds it away from the axle, 

 with one end up against the underside of 

 the inflated tire. The other end of the 

 finger will clear the projecting blade when 

 the tire is properly inflated. Just as soon 

 as the tire begins to flatten, the finger is 

 pressed radially inward and it strikes 

 against the projecting blade. The switch 

 is thereby closed, and an alarm, such as a 

 well located light or a buzzer which is very 

 easily heard, is operated. 



The various switches are mounted so that 

 they do not rotate with the wheels with 

 which they are associated; but they are 

 placed in a position so that they will be 

 thrown to one or the other of their closed 

 positions when* the tire is punctured or if 

 the air suddenly leaves it. This method of 

 mounting may be carried out in several 

 different forms. The one most convenient 

 is shown in the accompanying illustration. 



GROUNDED SWITCH 



PLUNGER LOWtREO 

 INFLATED TIRE 



A flattened tire presses a switch-finger in- 

 ward. The electric switch is thus closed, and 

 an alarm in the circuit at once gives warning 



