CAMBRIA STEEL. 



351 



CONVENTIONAL SIGNS FOR RIVETING. 



SHOP FIELD 



/ 



Two Full Heads. 



Countersunk Inside (Farside) and Chipped. 



Countersunk Outside (Nearside) and Chipped. 



Countersunk both Sides and Chipped. 



Ittsnm OUTSIDE. <, 



(FARSIDE) (NEARSIDE^ bOTH 



0QQ 



Flattened to H" nigh or Coun- 

 tersunk and not Chipped. 



Flattened to K" nigh. 



Flattened to K" high. 



This system, designed by F. C. Osborn, C. E., has for foundation the diagonal 

 cross to represent a countersink, the blackened circle for a field rivet and the 

 diagonal stroke to indicate a flattened head. The position of the cross, with 

 respect to the circle (inside, outside or both sides), indicates the location of the 

 countersink and, similarly, the number and position of the diagonal strokes 

 indicate the height and position of the flattened heads. 



Any combination of field, countersunk and flattened head rivets liable to 

 occur may be readily indicated by the proper combination of above signs. 



