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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