Page:Popular Science Monthly Volume 90.djvu/786

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��Popular Science Monthly

��A Light-Running Home-Made Feed Truck

NY convenience to lighten the work of the farm chores is always welcome. The feeding of stock, where there is a large herd, is a tedious task which can be light-

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��Writing a Name Under Shell on White of an Egg

HERE is a somewhat different egg trick, which is startling as well as mystify-

��ing, with

���A light-running truck used'for hauling feed to large herds of stock where a feeding device is not a permanent fixture

��ened considerably by the use of a feed truck. The illustration shows a home- made feed truck that holds 12 bushels. The list of materials is as follows:

��2 Top side rails, 5 ft. 2 in. by 2 in. by i^ in. 2 Middle uprights 28 in. by 2 in. by 1 3^ in. 4 End standards, 30 in. by 2 in. square. 2 Upper cross rails of ends, 30 in. by 2 in. by

ij^ in. 2 Lower cross rails of ends, 26 in. by 2 in. by

I J^ in. 2 Side sills, 40 in. by 2 in. square. 4 Floor joists, 26 in. by 2 in. square. I Axle bed, 26 in. by 2 in. square. 1 Front wheel bolster, 26 in. by 2 in. square. I Front wheel bolster, 12 in. by 2 in. square.

The frame is first built with mortise and tenon joints, according to the dimensions given, then the frame is covered on the inside with yellow pine boards that are ^ in. thick, placed horizontally on the bottom and vertically on the sides and ends. The wheels were obtained from a junk dealer and they did service formerly on wheelbarrows. The axle was forged from a piece of shafting obtained at a local black- smith shop. The axle was fastened under the frame just back of the center on the frame pieces. The forward wheel is a 5-in. swivel truck caster bought from a hardware dealer. This was placed on the two pieces cut for the front bolster. The truck is more easily trundled by hand when it is loaded than is the ordinary wheel- barrow. — T. H. LiNTHICUM.

��You hand a friend a hard boiled egg the request that it be minutely examined. After he has satis- fied himself that the egg is of the ordinary kind you ask him to print his name on the shell with a pencil or pen. Then tell him to break off the shell, and, much to his astonishment, he will discover his name plainly written on the white of the egg. As you have probably guessed, there is a previous preparation, but it is very simple. Dissolve i oz. of alum in a half-pint of vinegar. Take a small pointed brush and out- line your friend's name, or what- ever you desire, on the shell of the egg. Let it dry thor- oughly and then boil the egg for about 15 minutes. If these directions are carried out all tracings of the writing will have disappeared from the outside of the shell — but when the shell is cracked open it will plainly show on the white of the egg.

��A Center Finder for Round Bars and Shafts

IN the illustration is shown a cheaply con- structed center finder for round shafts. It consists of a steel square A made of 3^ by I to a

��in.

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��mild steel stock carefully worked deg. angle. Riveted to this is a beveled straight edge B at 45 deg. from either leg of the angle A. To use this device, place it across the end of the shaft as shown and draw a line along the straight edge B; then move it to another posi- tion and draw another line. The intersection of these two lines, as at C, is the center of the shaft. Of course, greater refine- ment and better wearing qualities may be obtained by hardening and grinding the various parts involved in the construction. — W. Burr Bennett.

���The center of a shaft or bar is easily found

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