SYMBOLIC NOMENCLATURE. 



CLASS 2. 

 Symbols for Operations causing Changes in Shape. 



129 



Straightening 201 



Bending 202 



Forming 203 



Folding 204 



Indenting 205 



Winding 211 



lui tm^ 212 



Blocking into shape 221 



Mandreling 222 



Spinning 223 



CLASS 3. 

 Symbols for Operations causing Changes in Form by Plastic Means. 



Moulding 301 



Casting 302 



Rolling 311 



Forging 312 



Swaging or pressing 313 



Drawing (likewire) 321 





CLASS 4. 



Symbols for Operations causing Changes in Form by Cutting. 



I. Shearing. 



Shearing proper 401 Combined punching and cupping 



(double action press) 451 



Punching, inside, including trimming, 411 

 " outside, " " 412 



CLASS 5. 

 II. Paring Tools producing Surfaces of Revolution. 



Turning 5 O1 



Clamp milling 502 



Screw " 503 



Thread-cutting, male 504 



Counterboring 542 



Countersinking 543 



Boring . 

 Drilling 



Reaming 561 



521 ! Thread-cutting, female 571 



541 Burring 581 



CLASS 6. 

 III. Paring Tools producing Ruled Surfaces. 



Planing 601 Milling, straight or curved lines 651 



Slotting 602 



Broaching 603 



Sawing 621 



9 



Profiling 66l 



