Anti-Mildeiv Grain Protector 



19 



models by means of smoke. A full-sized 

 machine, ordered for Wallachia, may now be 

 seen at Messrs Rotherall & Bastin's, Black- 

 friars. In length its tubes are 32 feet, across 

 the ship, 19 feet, the vertical tube being 13 

 feet, or, in other words, the tubes extend 

 nearly across the hold in both directions ; 

 above the hatches the tubing to the bell- 

 mouth will rise some 7 feet. The cost of 

 this apparatus will be about ^^150, a sum that 



The woodcuts, with letterpress following, 

 fully explain the working : — 



A — Funnel-shaped ventilator. 



B — Section of perpendicular cylinder with small 

 holes or perforations. 



C — Sections of horizontal cylinders with same. 



D— Interior pipes for keeping up the circulation 

 communicating with the atmosphere by E. 



E — Mouth or opening at top of pipes D. This not 

 being seen in the drawing, E is placed on pipe D at 

 top thereof. 



might be saved in a single voyage upon an 

 extensive cargo. For granaries and other 

 magazines, where a full current cannot be en- 

 countered, as on board ship, a very ingenious 

 Archimedean screw arrangement has been 

 made for forcing down the air into the store 

 amongst the corn. Experience will no doubt 

 shew other advantages and applications. The 

 plan has the merit of simplicity and of work- 

 ing without need of any continuous attention. 



F — Standards for supporting lower horizontal pipes 

 and apparatus generally. 



G — Inner opening of pipes D, 



H — A compartment in the ship or other place con- 

 taining the grain seed, &c., with the apparatus intro- 

 duced therein. 



I — Deck of ship. 



K — Sponges chemically prepared for purifying the 

 air as it passes into the cylinders. 



N — Supports for the upper horizontal pipes. 



A cap is provided for the cylinder B when the 

 funnel ventilator is removed. 



