DUST CONTROL IN GRAIN ELEVATORS 
21 
Fig. 16.— Hood at tail of conveyor belt 
the belt to catch the chaff and heavy material carried over the tail 
pulley. This material is carried away through the suction line 
connected to the hood as fast as it is deposited. Another type 
(fig. 17) incloses more completely the tail end of the belt and has, in 
addition to the trough or hopper to catch the heavy material, a 
slightly flared hood arranged to prevent any light dust from being 
thrown into suspension at the end of the belt. This hood is especially 
well adapted for installation at the tail of overhead conveyor belts. 
Although hoods of these two types may not be adapted to all belt 
installations, they will serve as a basis for designing others to meet 
various conditions. 
AT MISCELLANEOUS POINTS 
It is impossible to enumerate all the places about an elevator 
where some dust-control measure should be applied, because a dusty 
point in one elevator may have been eliminated in another elevator 
Fig. 17.— Conveyor belt hood 
