LATCHES, LOCKS, AND FASTENINGS 



10/ 



Fig. 149. — Common 

 steel hinge applied to a 

 machine-tool cover. 



Fig. 150. — Cover lugs cast 

 integrally, and pivot pins fas- 

 tened in loose piece for greater 

 span. 



Fig. 151. — Wlien swing- 

 ing member A is to be 

 removable, the bearing is 

 cut as in the left view. 



Fig. 152. — Swinging rod re- 

 tained by pinned collar A. Both 

 lugs are integral with the casting. 



Fig. 153.— 



Pivot bearing as 

 used on an adjust- 

 able vise .iaw. 



Fig. 154.— Tog- 

 gle or pawl joint. 

 Angle A should be 

 30 to 45 deg. to 

 retain the member. 



Fig. 155. — Radial and axial play are taken 

 up by the hardened and ground bushings 

 tapered to an included angle of 22^0 deg., 

 sufficient to prevent sticking. 



Fig. 156. — Needle-bear- 

 ing pivot for either rota- 

 tion or oscillation, with 

 three hardened and ground 

 washers for separating the 

 roUei-s. 



Fig. 157. — Three liall joints used in a gear-shift 

 mechanism. Hole A is in shifting rod; B is the pivoting 

 center, which is retained by the inserted locating plug 

 at C. 



Fig. 158. — Socket joint 

 witli hemispherical rod 

 ends held in place by screw 

 bushings. 



Fig. 159.— Self-ad- 

 justing socket joint. 

 The sheet -metal 

 spring cover is held 

 in place by two screws. 



