618 



Popular Science Monthly 



not necessary. The 5-minute period must 

 be reckoned from the time the can is 

 placed inverted over the steam outlet, and 

 the steam must be at least 205 deg. F. 

 when the can is placed in position. An 



Sterilizer on a two-burner kerosene stove 

 with can in position for sterilizing utensils 



accurate thermometer, with a scale reading 

 to 212 deg. is necessary. 



Repairing Gasoline Pipe with 

 Oiled Paper 



SOME time ago I took my long-used 

 motorcycle and started out for a day 

 of pleasure, supposedly. I had my rifle and 

 a lunch with me. When riding over a 

 particularly bad stretch of rocky road, I 

 took a "spill," but soon picked myself up, 

 only to find the oil running from the tank. 

 My machine not being equipped with 

 footboards, the small oil-pipe running from 

 the tank to the pump was exposed and this 

 pipe had been so badly damaged by the 

 "spill" that it was broken in two places. 

 Stopping the flowing oil with a small plug, 

 I decided that I was to enjoy a 6-mile walk 

 to town. After some thinking I took some 

 of the wax-paper wrapped around my 

 lunch and started to piece out the broken 

 space. I rolled the paper tightly around 

 the ends of the pipe and wrapped it with a 

 small roll of insulating tape which I had 

 with me. After the motor was run a few 

 seconds to suck the air out of the pipe, the 

 oil started to circulate and I was able to get 

 home without walking.— Duncan Dillon. 



A Practical Wagon Trig Operated from 

 Driver's Seat 



THE device illustrated is a substitute 

 for a wagon brake and consists of a 

 hard wood trig A, not larger than 3 in. 



square and i bout 30 in. long, which is 

 operated by two ropes, B and C. These 

 are fastened to a screweye or staple so 

 placed that the trig will balance as at D. 

 The rope B should be fastened to the rear 

 axle as near the wheel as possible, and have 

 such a length that the trig will drag upon 

 the ground a few inches behind the wheel as 

 at E, when the wagon is moving forward. 

 It will drag at right angles with the direc- 

 tion in which the wagon is moving unless it 

 strikes some obstacle which gives it a 

 different angle, when the trig will auto- 

 matically resume its correct position as 

 soon as the obstruction is passed. 



If it is necessary to back the wagon, or 

 when it is upon a down grade or level 

 ground the trig may be hoisted clear of the 

 road by rope C, as at Z); this rope passes 

 through a pulley at F to the front of the 

 wagon where it can be easily reached by the 

 driver. When the rope is released the trig 

 will at once fall into its place behind the 

 rear wheel as the wagon moves ahead. 

 When the horses stop to rest the wagon 

 will settle back until it rests upon the trig 

 which will be so far under the rear wheel 

 that the downward pressure as the wheel 

 settles backward will force the trig against 



The trig as it is fastened to the rear axle of 

 a wagon and operated with a rope from seat 



the ground; this prevents the trig from 

 turning or slipping back and gives it a 

 good grip. — Charles A. King. 



