HARVESTING MACHINERY 151 



carry the twine from the knotter hook has proved more 

 reliable than to depend upon the twine being pulled from 

 the knotter hook by the bundle. 



212. Adjustment. It seems impossible to take up the 

 adjustment of the binder in the light of experting in this 

 treatise. However, there are a few misadjustments of- 



FIG. 113 A TWINE DISK. A KNOTTER COMPLETE A KNOTTER HOOK 



common occurrence, and often resulting in loss of dollars 

 to the user of the machine, which may be taken up here. 



1. A loose main drive chain permits the chain to ride 

 the teeth of the sprocket and slip down the teeth, giving 

 the machine a jerky motion, as if some part was catching 

 and stopping the machine. A dry or muddy chain aids 

 in giving this effect. 



2. If the slats are torn from canvases, the elevators 

 are not square or the rollers are not parallel to each other. 

 The method of putting elevators in square has been ex- 

 plained. 



3. If the main gear cuts badly and wears rapidly, 

 either the gears do not mesh properly or the elevator 

 chain is too tight. 



4. The knotter hook will not work properly unless 

 smooth and free from rust. It can be polished with fine 

 emery paper. 



5. The binder attachment will not do its work prop- 



