



rye of vbeoJ, or boat of aWA /. 



* I <* + i- 

 UiieknrM of soak fey | fc. 



k.> -niui . ; i 



The following Uble give* d i 



I r , 



ig with avenge 



diameter of .haft, 

 B -bfrndthofker. 

 T -thickm--of^unkkey. 

 T, .thkkoe of flat key. ato- thidottH of 

 key 4 Inch per fool of length. >. I In 9C. 



key. Taper of 



HI \ IT I 



-arly always cylindrical and made of wrought 

 ( 'at iron is nmly used for dialling. 

 >* are shafts which are subjected to bending without 



The parti of a shaft or axle which rest upon the bearings 

 nr supports mi- mll^lj..io-11'i/.*. y.iY,.r, or -../Air*. 



unmls the supporting pressure is at right angles to the 

 ts i!,. I collars the pleasure U 

 parallel to that axis. 



fu may be solid or hollow. Hollow shafta are stronger 



the smme weight of material. Thus a 



Itollow v -nuil diameter of 10| inches and an 



rnal diameter uf 7 indies would have about the name weight 



