For Practical Workers
���Using a Hinge for a Vise
A SERVICEABLE and durable vise may be made with a few simple tools, at a very small cost. Procure an 8 or lo-in. strap hinge and cut it off along the lines marked A-B in Fig. /. Fasten the hinge, with two small bolts to your workbench or on to a board, which may in turn be fastened to the bench, as in Fig. //. Secure another bolt of }i-\r\. diameter, 2}4 ins. long, and thread it for a distance of 2% ins. Insert it through the holes A", X, which should be drilled before the hinge is fastened to the bench. See Fig. /. Put on a winged nut and your vise is complete.
Any hinge may be made to serve as
���a clamp in the same way, by putting a small bolt through two of the holes and tightening up the winged nut with a wrench. — H. W. Lueddecke.
How to Make a Distilling Apparatus
EVERY chemical laboratory requires a good, distilling apparatus for obtaining pure chemicals. The one here described is inexpensive and easily made. A piece of brass or copper tubing 20 ins. long, with a diameter of 2 ins. and a thickness of about 1/16 in., is fitted with 2 rubber stoppers ij/g ins. in diameter, having a center hole of
���A strong hinge makes a good vise if adjust- ed in this fashion
��Running water and simple laboratory- equipment serve to make this still
X ill- Two holes 5/16 in. in diameter, arc drilled 2 ins. from each end, and 2 brass tubes ij^ ins. by 5/16 in. are carefully soldered into them. One of these tubes is for supplying water to the large tube, which acts as a water- jacket, and the other is for discharging the water.
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