i:x(;i\i I HIM. /•/..( v.v/.V(, /(»a' M.txri-.K iria-: 549 



Sih. Maniif.u'turinj; Layouts. 



Thi'sc layouts loll the niliru shop i>r).;.iiii/.itioii I'.ich sli-p 

 in making llii' parts siiowii on liic inaiHilactnriiii.; draw- 

 iii^s. 



iUh. Vhv piiTf rate to he paid for i-acli operation is (k-lfrniiiu-<I 

 al'ti-r arliial manufartun- is slartiKl. 



Mam 1 A(HKiN(i Dk wviniis 



Thi- nianutarturinj; <lra\vinj;s prepared for an\- |)iei-e of Western 

 Klectrie apparatus comprise complete detail drawings for each part, 

 an assembly drawing showing how the \'arious parts are associated, 

 a stock list of the parts required and the quantities of each, and a 

 test sheet which shows the mechanical and electrical requirements 

 which the apparatus must meet in order to insure satisfaclor\- per- 

 formance in the System. 



In the preparation of these drawings, stan<lards are followed which 

 insure that the designs as far as possible will permit of rugged tool 

 construction which will insure long tool life; that the holes are of such 

 dimensions as will permit them to be perforated wherever possible; 

 that thread sizes for the tapped holes selected are such as to insure 

 minimum tap breakage; and other similar details. 



Manlf.xcturinc. Opkrations 



Before deciding upon the manufacturing operations for any part, 

 a careful detailed analysis is made by the Planning Engineers to deter- 

 mine just what operations are required and how the operations shall 

 be performed in order to obtain a satisfactory production in the most 

 economical way. 



In the case of simple parts, it is not a difficult task to determine 

 the manufacturing o[x-rations reejuired and their proper seciuencc. A 

 large proportion of the parts, however, is in the fairh' difficult class, 

 and the ingenuity of the Planning Engineer is called upon, together 

 with the advice and guidance of his superiors, in determining the 

 manufacturing operations to be used in these cases. 



A fair prf)portion of our product makes up what might be called 

 the "difficult class" of parts to manufacture, and in setting up the 

 proper procedure in these cases, we frequently hold conferences where 

 the best talent along the particular lines under consideration is called 

 into consultation in determining the Ix'st procedure. In many of 

 these cases actual experimentation is carried on before the final tool 

 line-up is decided upon. 



