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"WILLAMETTE IRON AND STEEL "WORKS 



SEQUOIA SPARK ARRESTER 



This Arrester is guaranteed the most efficient spark catcher built. It is 

 light weight, projects above the stack but six inches, and readily put on or 

 taken off. Made for any size stack and adapted for use on logging and 

 hoisting engines, locomotives, mill stacks, steamboats, etc. 



NET PRICE LIST 



F'or stack less than 1 2-inch diameter $22.50 



For stack from 1 2-inch to 1 7-inch diameter 27.50 



For stack from 1 8-inch to 23-inch diameter 35.00 



For stack from 24-inch to 27-inch diameter 45.00 



For stack from 28-inch and above Special Price 



EXTERIOR APPEARANCE 

 Showing Arrester Mounted on Donkey Stack 1 



Figure No. 2 shows a cross section through the center of the stack, 

 which clearly illustrates how the draft is unimpeded even though the 

 screen becomes entirely clogged. The clearance around the screen is 

 equal to the area of the stack, hence the area of exhaust is never con- 

 tracted. The sparks* are deflected down into the pan and thence led off 

 to some convenient point through the oudet pipes. 



The advantages are readily appreciated by all firemen and engineers. 



Special circular furnished on request. 



j\ro s . 



