LATCHES, LOCKS, AND FASTENINGS 



111 



LOCK BOLTS AND INDEXING MECHANISMS 



r:^':'~V \ 



: ^' Rofaiing 

 member 



ZA ^Machined 

 ^ hole 



Fig. 186. 



,' Conica/ lock bol-f 

 y l-op and boifom of 

 conical end m!l/ed off 

 I'o a//ow for wear 



-keyed lo prevenf rofafion 

 of bolf 



Fig. 187. 



Screw- backed 

 brass shoe j 

 clamps bolf I 



Sides ofsloh 



ground, boflom 



1 relieved^ open 

 end chamfered 



Fig. 188. 



Operaiing spring pushes ogoinsl pin 



Brackel acts as (-4- 

 guide for cone- 

 ended bolf and as 

 refainer for opera fing spring 



Fig. 189. 



ing 



Conical- ended -\'%rSlof 

 lock bolf, \j 



'Slol 



Pin keeps bolf oaf of ' 



engagemenf by dropping 



info slof when bolf is fumed 90deg. 



Fig. 190. 



Pin ^. 



^w 



/ Bayonel siof 

 ~M / keeps bolf oaf 

 j o f engagemenf 



ES 



^^ 



^ 



-Lock bolf 



Fig. 191. 



I Lock boli 



Disengaging pin-—. 

 Locking piece, / 



Pivoi-'{ |:|ri1 



- - - Flaf ground piece acfs as a 

 \ lock boll by engaging slof 



Spring keeps bolf 

 engaged 



— Pivol 



Fig. 192. 



, /g clearance allows spring 

 fo push bolf firmly inio 

 lock- bolf plafe slof 



Cam acl'uafes gear segmeni 

 Fig. 193. 



