600 



A Wooden Lighthouse Candlestick 

 and How It Is Made 



IT is easy to make a wooden candle- 

 stick in the shape of a lighthouse. 

 The one illustrated is about six 

 inches high and about four 

 inches in diameter. The 

 lighthouse is white, with yel- 

 low and red ornamentation; 

 the windows are painted. 



The saucer in which the 

 lighthouse stands can be 

 used to receive burnt 

 matches. It is nailed or 

 glued to the lighthouse. 

 Every lighthouse keeper has 

 a daughter. Carve her out 

 separately if you like and 

 glue her into the saucer so as 

 to have her leaving the door. 

 Let her dress be yellow and 

 her belt red. 



The depth of the saucer is 

 about two inches. It is 

 painted red. These colors 

 can be varied to suit the 

 tones of the room or the owner's fancy. 



A hole is cut in the top of the lighthouse 

 to allow the candle to be placed inside. • 



Popular Science Monthly 



^r* 



The lighthouse candlestick 

 makes a pleasing table 

 decoration. The colors are 

 varied to suit the fancy 



Intake 



Getting Rid of the Poppet- Valves on 

 a Gasoline Engine 



THE trend of the times 

 in engine construc- 

 tion as well as in every 

 other kind of manufac- 

 ture is toward 

 simplicity. 

 Wherever one 

 thing' can be 

 made to do the 

 work of two or 

 even more 

 parts, nothing 

 is left untried 

 to facilitate the 

 merger. A 



western manufacturer has brought out a 

 new gasoline engine in which the poppet- 

 valve, camshaft and associated parts are 

 eliminated and a common rotary valve 

 substituted in their stead to perform the 

 same functions. 



When the rotary valve is in a position 

 opposite the apertures in the cylinder head, 

 the burnt gases pass out through the aper- 



tures to the exhaust pipe. The 

 exhaust part of the valve opens 

 when the piston has reached the 

 limit of its downward travel on 

 the power stroke. As the piston 

 approaches the top of the cylin- 

 der in the usual manner, the 

 valve is rotated counter 

 clockwise by means of gears 

 which are securely fastened 

 to the crankshaft and valve 

 respectively. They are in a 

 ratio of two to one and are 

 tied by means of a suitable 

 belt or chain. 



The by-pass in the valve 

 remains open until the piston 

 has reached the limit of its 

 upward travel. When the 

 piston starts back the aper- 

 ture in the valve is rotated 

 opposite the aperture in the 

 cylinder head. The influx of 

 gas is through the aperture 

 in the cylinder head, through 

 the rotary valve and its 

 aperture, and through the 

 aperture in the cylinder head to the cylin- 

 der. The valve aperture remains open 

 until the piston has reached the limit of its 

 downward travel. 



In this way the mechanism of the engine 

 is so simplified that there is little chance of 

 anything getting out of order and the life of 

 the engine is considerably lengthened on 

 account of the elimination of friction. 



haust 



Section through in- 

 take and exhaust 

 portion of cylinder 

 head on angular 

 line gas supply 



When the rotary valve is opposite the apertures 

 in the cylinder head, the burnt gases pass 

 out through the apertures to the exhaust pipe 



