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 



locafJng PJwi^er 



■Ori/J Bvshiry 



IccAA/uf- 



m_ 



Soft ms/ie/- 



rxf/' 



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 



