A Main Smoke Chamber 



B Cone with Spiral Veins 



C Perforated Screen Plate 



D Spark Chamber 



E Netting 



E Top Opening Stack __|^ 



G Cinder Receptacle 



H Cleaning Out Holes 



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Description of the Action of the Lima R & H Diamond Stack 



The action of the smoke and exhaust passes up through the Main Smoke Chamber "A" striking against tlie 

 Spiral Cone "B" which gives it a whirKng motion and the larger cinders are thrown outward by centrifugal force 

 against the perforated Screen Plate "C". This plate has openings in it large enough to permit the passage of 

 sparks; after the sparks pass through this perforated screen plate, they pass beyond the line of active draft and by 

 their weight fall into the cinder receptacle "G". The lighter sparks which are not thrown through the perforated 

 screen plate are carried by the draft against the fine netting "E". In firing up, the natural draft through "A" 

 around "B" and under "E" is unobstructed by any netting. This has two advantages; one being that the possi- 

 bihty of clogging is eliminated and the other being that you get an easy, free draft when starting fire. 



Practically, this stack is a centrifugal seperator which prevents the emission of the larger and more dangerous 

 sparks and allows only the small light sparks to escape, which are incapable of carrying fire by the time they leave 

 the stack. The sparks are (juenched by the grinding action against the screen plate by the centrifugal whirl im- 

 j)arted by the spiral veins on the cone. 



The Lima R & H Stack has been an unqualified success. The Lima Locomotive & Machine Co. first started 

 to equip locomotives with this stack in 1905 and since then have furnished over One Hundred Locomotives fitted- 

 with same. ^^„---^^ 



The Washington Forest Fire Association, after investigating the merits of this stack recommended it to the log- 

 gers in the State of Washington and it has been favorably considered by Forest Fire Associations in other States. 

 I'he following is a partial list of users of locomotives equipped with the Lima R & H Stack 



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SHAY GEARED LOCOMOTIVE FITTED WITH "LIMA R & H STACK" 



