CORN MACHINERY 23! 



carrying of the corn by hand. These are provided with 

 double-chain conveyors and may be had in sections, mak- 

 ing a "drag conveyor" which may be extended to almost 

 any direction from the main feeder. 



322. Separating device. To separate the corn and the 

 cobs, the whole, after passing through the shelling 

 mechanism, is made to pass over a cob rack which per- 

 mits the corn and chaff to pass through. The cob rack 'is 

 made in at least three ways a vibrating rack, a rod 

 rack with rakes, or an endless rack with thumpers under- 

 neath. The latter two have advantage in lightness and 

 amount of power required, and also in the steadiness by 

 which the machine may be operated. 



323. Cleaning device. To clean the corn and free it 

 from chaff and husks a fan is provided which sends its 

 blast through some form of sieve or rack. The corn sieve 

 may be dispensed with and a single rack used. 



324. Grain elevator. The grain on all portable ma- 

 chines is elevated by a chain cup elevator into the wagon 

 box. To carry the corn to the lower end of the elevator 

 an auger is universally used. 



325. Cob carrier. To carry the cobs from the sheller 

 a single- or double-chain conveyor is used. It is an ad- 

 vantage to have this swing from the sheller. 



326. Dustless sheller. To carry the chaff and husks 

 away from the sheller an auxiliary fan is provided on the 

 larger machines to gather and discharge the dust and 

 chaff at one point. A sheller so arranged is called a dust- 

 less sheller. 



327. Shuck sheller. A few of the spring shelters are 

 arranged to handle partially husked corn, and many of 

 the cylinder shellers are so arranged. The capacity of 

 the machine is much reduced in handling snapped or un- 

 husked corn. 



