Page:Popular Science Monthly Volume 89.djvu/308

 294

��Popular Science Monthly

��Jig for Drilling Holes in Peripheries

THE jig sliown in the drawing was designed for drilling holes in the periphery of the blanks shown in Fig. I. The piece A is made in the milling machine, the divisions being obtained by means of the dividing head. The blanks are held on the spindle B by means of the nut. The plunger holds it in position while the hole is being drilled. The spring prevents vibration from loosening the plunger. The piece A can be made with the holes spaced equally or not. — C. Anderson.

��Diagrams of jig and pieces to be drilled

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��Convex Milling Cutters

N adaptation of convex milling cutters opens a wide range of either convex or concave cutters for formed work in the lathe.

All that is necessary is a piece of

��A

���A holder of milled steel for the cutter is a saving in convex milling

��mild steel milled so as to enter the tool- post, which is drilled and tapped on one end to receive the stud with the body turned to fit the hole in the cut- ters, and milled square or hexagonal on the head for the monkey-wrench.

This holder is cheap to construct and the saving in speed-formed lathe tools by this method amounts to many times its cost. — Geo. P. Breitsch.mid.

A Painless Way of Killing Chickens

CHICKENS may be killed quicks- and painlessly in the following manner. Procure a piece of stout cord or rope about five feet long and make a slip noose at one end. Fasten the other end on a pole or the side of a wall so that the noose hangs about three feet from the groimd. Put the chicken's legs in the noose and draw it tight. Grasp the chicken's head near the mouth with the left hand (the chicken will open its mouth voluntarily) and with a small sharp-pointed knife, reach into the chicken's mouth over the tongue, to where the head joins on to the neck. By giving a quick jerk with the knife, the jugtilar vein will be severed. This is a quick and painless way of killing chickens. — John D. M.^cKnight.

Measuring Bucket for Flowing Water

A BUCKET which measures exact quantities of water from a flowing stream is shown in the illustration. The amount measured depends on the size and location of the shaft. A counter is attached to the shaft to register the amount of dis- charge from the bucket as it tips to turn out the water. The over- flow occurs when the water reaches a level that throws the weight off balance so far that it turns the bucket on its bearings and s])iils the contents, after which it rights itself for another charge.

���Ingenious device fo

measuring flowing

water

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