292 



Popular Science Monthly 



of them and inserting a wire pin. The 

 eccentric is placed midway between the 

 bearings. The ring is sHpped on the 

 eccentric and the guide plates bolted 

 fast. The Hy-wheel is assembled on the 

 outside of the bearing and pinned on 

 the same way. 



Place the bearing support with its 

 assembled parts in position on the base. 

 Try the connecting rod to be certain it 

 will connect properly, and mark the 

 points for drilling holes in the base. 

 These want to go all the way through. 

 Battery or stove bolts are inserted from 

 the bottom and the support is bolted 

 down. 



Since the connecting rod will have to 

 lead the eccentric by a quarter turn the 

 heavy side of the eccentric will need to 

 be turned until it is on the back of the 

 engine, or on the side with the inlet, 

 when the position of the connecting rod 

 end may be marked on the fly-wheel. 

 This will be ^4 in. directly above the 

 center of the shaft. A ^-in. hole is 

 drilled at that point and a head 

 iM. in. 

 position 



Next 

 position 



screw 



fastens the connecting rod in 



assemble the slide valve in 

 as well as the eccentric rod. 

 These are bolted together on the outer 

 end. Adjust the eccentric rod until the 

 valves just cover the ports. When this 

 is done lock it in place by means of the 

 adjusting nuts. When all parts appear 

 in their proper positions the cylinder 

 may be permanently fastened in position 

 by soldering them to the sheet-metal 

 supports. Power for the engine may be 

 secured from a boiler or radiator. 



A Pully Made from Wax and Wire 



A PULLEY for a small motor or 

 other piece of apparatus can be 

 very easily made by drilling a small 

 hole through the shaft where the [nilky 

 is to be located. A wire is put through 



Shaft 



:||i ,ii|, ,Benf Wire 



T 



Form 



Sealing wax and wire can be made into a 

 light pulley for a small motor 



the hole, held tightly, and bent as shown 

 in the cut, making the outer curve a 

 little less than the diameter the finished 

 pulley is to have. The shaft that is to 

 take the pulley is then held vertically, 

 and a form the size of the pulley desired 

 is placed around the coiled wire. 



Sealing wax is then poured in and 

 allowed to harden for an hour 'or two. 

 The coiled wire will hold the sealing wax 

 together, and will be found to be strong 

 enough for light work. 



Making a Space with a Chain Line 



^^^_^ I 



HANGING 

 PLASTER 



Making an opening for electrical wiring 



AN electrician was called to do some 

 L wiring in a brick house where the 

 plaster was put on lath nailed to a 

 vertical strip fastened to the bricks. In 

 applying the plaster numerous hangers 

 or hooks back of the lath were in the way 

 (if the conduit. It was an easy matter to 

 insert the fish wire but how io make a 

 sufficient opening for the conduit puzzled 

 the electrician until a chain was seen in 

 the tool -box. 



This was tied to the end of the fish 

 line and worked back and forth by 

 jogging it up and down against the 

 l)laster until a large enough opening was 

 produced to let in the conduit without 

 any obstruction. — Chaki.ks F. Smisor. 



