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The South Bend Spark Arresters. 



PATENT BOOMERANG SPARK ARRESTER 



Particular attention is called to our new Patent Boomerang Spark Arrester, 

 with which all of our engines are equipped. The exhaust, which is the cause of 

 so much trouble with the ordinary Spark Arrester, is made use of in the Boomerang 

 Spark Arrester, and the heavier the draft, the better it works. 



The sparks and smoke going through the stack are separated by a cone, which 

 is a little larger in diameter at base than stack. The smoke, being light, takes the 

 course of least resistance around the outer edge of cone and through screen. The 

 sparks, on account of the momentum, travel straight up and are diverted by the 

 solid steel cone into the boomerang and thence into screen conveyor tube into bucket 

 or half barrel on roof or any convenient p]ace. 



Briefly stated, the merits claimed for the above Spark yVrrester are as follows: 



Absolutely stops all s])arks from passing out of stack. 



It does not choke exhaust. 



Will outlast other spark arresters. 



Works equally well with wood or coal. 



MADE IN ALL SIZES FOR DONKEYS AND LOCOMOTIVES. 



Prices quoted on application. 



Manufactured by WASHINGTON IRON WORKS, Seattle, U.S. A. 



