FARM MACHINERY 



249 



the failure to make a complete knot. The names of the 

 various parts of the tying mechanism may be learned from 

 the accompanying illustration. If the needle does not carry 

 the twine over far enough, the twine disk, or cord holder, 

 will grasp only one strand, and the knot will be tied only 



in one end of the cord, 

 with the other extending 

 back to the machine. 

 This condition is shown 

 in No. 1, Fig. 155, and 

 may be caused occasion- 

 ally by a straw interfer- 

 ing with the placing of 

 the twine. 



When the twine disk 

 is too tight, the symp- 

 toms will be much like 

 those just described, ex- 

 cept that one end of the 

 band will be frayed (No. 

 2,) indicating thatifc has 

 been cut off by being 

 pinched too tightly and 

 that the spring should be loosened. If both ends are cut 

 off irregularly, as shown in No. 3, it is quite a sure sign 

 that the holder is too tight. 



If the knotter spring, which holds the finger down upon the 

 knotter hook, is too loose and does not hold the ends of 

 the twine while the knot is pulled over the hook forming the 

 knot, the ends of the band will appear as shown in No. 4. 

 The same kind of band is found when the knife cuts 

 the twine too soon before the knotter finger has closed 

 over it. 



Fig. 155. The ends of bands which have 

 not been made into perfect knots. (After 

 Steward in Trans. Am. Soc. A. E.) 



