LATCHES, LOCKS, AND FASTENINGS 



' Cover 



117 



Aliernaie con- 

 sfruc-tion re- 

 quiring /<ey io 

 guide plunger 



Fig. 227. — Spring-backed plunger type of 

 automatic door lock, for light duty. 



Fig. 228.— Spring-backed 

 plunger engaging a cast lug 

 on case, suitable for light duty. 



^ 



"J 



I Openings larger ihon) 

 j head or rivet or sere w/ 



Screv/ lype cover fasfening 

 Fig. 229. 



To add wear resislonce, 

 lafch and screw cyan- 

 ided 



Cover located by^ 

 'dowel pins 

 may be 

 lifted off 

 when latch 

 is opened 



Fig. 230. 



Fig. 231. — Simple cleaning-hole cover. 



'A two coil spring 

 may be substituted 

 tor the shoulder 



Fig. 232.— Shouldered stud 

 fastening. 



' A ^ 



Knob must be 

 unscrewed un- 

 til the corners 

 A-A clear 



Stud bent 30deg., with knob for 

 locking a chip cleaning hole cover 



Fig. 233. 



Fig. 234.— 

 Simple swing 

 bolt and open- 

 end slot. 



1 

 I 



i 



l— ' 



Fig. 



235.— Tee-bolt 

 fastening. 



type of 



