

AND DESIGN 



EXERCISE 123 "i' Engineer's Vicr. Draw the sec 



elevation shown in fig. 131 ; also a aid. . a tr<>nt !. \.n..n. 



ami a phm. Scale ll inches to a foot. All tin- dinirn.siMiis a; 

 be taken i! "in tin- illuHtrationa of the Heparate details .ii..\\n \\\ 

 ngn. 1 



This vice has the advantages of the instantaneous -JIM- \n. . 

 together witli those of the ordinary BCJ \\ IM n tl 



is pushed over towards the screw M tin- nut L is lowere<l. and tin 

 in \able jaw may be instantaneously moved out r in .. suit tin 

 size of the work to be griped. After the I Leased, tin 



movable jaw is screwed up tight against the work as in an ..rdin ai \ 



~/l% o.tf^P 

 . ifr + w>>7l>LXM+ 



yw//,X'//MV l 



'ff 



Fio. 130. 



