60 Materials <nul '/'////> //<///////// 



but material may be taken off at any point, espe- 

 cially when the apron is flush with the floor. It 

 is used for horizontal work, but not for grades 

 of more than 30 unless cleats are provided to 

 hold the material so that it will not slide back 

 along the top of the conveyor. 



Bucket (".oni'eyor*. The bucket conveyor can 

 be used to convey material horizontally or verti- 

 cally or both. The buckets are mounted between 

 chains. They are frequently pivoted, so that 

 they will always swing in a vertical position, what- 

 ever direction the chain may be running. Attach- 

 ments are made for dumping the buckets at any 

 point, either on a horizontal or a vertical run. 

 Chain conveyors with pivoted buckets are used 

 in power houses for handling coal and ashes. 

 Coal is dumped from the cars or canal boats in- 

 to the conveyor, elevated to the top of the bins, 

 carried horizontally to a particular bin, and 

 dumped. The empty bucket continues on over the 

 bins, down to a tunnel underneath the boilers and 

 back to the loading point. The same conveyor 

 is used to clean out the ashes, which are shot from 

 the ash pits down into the buckets under the boil- 

 ers, and elevated up to a point where they are 

 discharged into the cars or boats. 



Many styles of buckets are used, depending on 

 the service. Frequently, the buckets are perfor- 

 ated so as to pick up material out of the water 

 and allow the water to drain off during transit. 

 The buckets may be spaced some distance apart 

 or may be arranged to overlap, in which case this 



