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Page:Popular Science Monthly Volume 90.djvu/634

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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.

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