544 



BULL SVSriiM TECHXICAL JOIRSAL 



XOTK COMPARISON OF SIZF. OF SHAFTS 



Shaft fok No. 2 I vi'E Cali.in(. Dial 

 Opcr's. Req'd. (18) 



Rough form thread portion, and (). I). 

 counterlx)rc'. finish turn, thread and cut off 



Limits ±.0015" for diam. 

 =t.002" for I'gth. 

 Rough and fin. form i diams, shear 1 

 diam., thd. and polish. 



Limits +.00;)",-.()(>5" I'gth. 

 Shear S. V. face to I'ght. burr and polish 

 long end. +.0(K)" 



Limits — .001" for diam. 

 Straddle mill Mats— mill four (4) slots. 

 (2)oper's. +.000" 



Limits —.002". 



Miifhine and Tools 

 Davenport .^uto Screw .Machine, .S 

 chucks, .S pl.iin and form tools, 1 thread 



<lie and three gauges. 



\o. 1 H. & S. II. S. M. 



1 chuck, 2 form tools, thread die, emery 



stick and 4 gauges 



Xo. 1 B. & S. II. S. M. 



1 ( huck, 2 form tex>ls, emery stick ,ind 



.S gauges 



//./«</ Mill 



.Miilinn fixture, vise and jaws and spii . 



cutters 



C'kankshait fok No. 21 Bli.ss 

 Pinch Press 



Opcr's. Req'd. (8) 



Rough and finish, center, turn face com- 

 plete and polish limits diam. +.008",- 

 .000" length ±.008". Mill concave key- 

 wavs, '.I " slot and 4 flats — i oper's. 

 Limits ±.005". Drill '4" x ^s" hole. 



Mochhifs niul Tools 



lleiiiK 12" X 5' lathe, center drill, turn- 

 ing and polishing tools. No. 3 B. <S: S. 

 mill machine milling fixtures, arbors and 

 (Utters. Cincinnati 1 sp. D:l'. drill jig 

 an<l drill 



Fig. 1— Dial .Sh.ifl vs. Cr.ink Sh.ill 



