hxcimj.him; ri..i.\\i.\\; /oa- m.imi .iciiia-. m.^ 



I'm .\l>\ AN 1 \(.l> OI I'l.WMNC 



In onk-r ti) iiu-rl tlu- rf(|uiri-niriils of llir l»-U-|)h()iH- l)usiiU'ss, ihi- 

 l-".ni;iiut'rinK 1 Vp.irtUKMits of tlu- Sysirm .in- coiisl.iMtly (li'Vi-lopiiiK 

 lu-w (k-signs ami i'lianj{itiv; pri-si-til (Ifsiijns with tlu- oliji-ct of improv- 

 ing; the quality of. or ri'tluc-ini; tlu- ro.sl of tfk-phono sorviri-. This* 

 nu-ans that the pnxlurts that \vi- an- inaiuifactiirin^ an- constantly 

 utuk-ruoinj; (k'\i'lopnR'ni. with tlu- n-siilt that wi- art' conliinially 

 lonfroiitwl with rhanijin^ inaniifactiirinji; prohk-nis. 



The decisions reached liy the various orijani/ations of tlu Hell 

 System to proceinl with the intrcHluction of the new and chanj;e(l 

 designs just referred to arc based entirely on ini|)ro\e(l service, lower 

 lists, or iMith: conse(iuently, before any work on new developments 

 An Ik' done the Manufacturing IVpartmenl must furnish firm esti- 

 mates of the cost of one or any numbei of ])ieiesof apparatus that 

 may Ix* required. 



This is made possible by our al)ilit\' to plan a job in detail on jiapei 

 Mul to make an accurate appraisal of the manufacturing costs before 

 pr(xluction is starteti. The cost established, selling prices can be 

 determinetl. and a final decision made b\- the Systern as to the merits 

 of any new devlopment. 



Furthermore, by scrutinizing the design antl concentrating on the 

 \arious manufacturing operations to be used before the tools are 

 built, numerous changes can be introduced to facilitate manufacture 

 Hid in this way avoid getting into the factory what have been termed 

 ' iiospital jobs " which result in retarded production antl infiated costs. 



The two designs illustrated in Fig. 2 bring out what is possible in 

 .1 manufacturing analysis of an engineering design. The part shown 

 is the mounting plate used in the calling dial. The design originally 

 showed ears, which were blanked out and turned over toward the 

 inside of the blank and perforated, as shown in the upper \ievv. 



The lower view shows the design as it was developed due to the 

 Manufacturing Department's suggestions to blank the ears from the 

 inside of the bl.ink and turn them outward, thus locating the mounting 

 holes in exactly the same piosition as the engineering design, but 

 saving material. It also simplified the bending of the ears. Instead 

 of a double bend, there is an S bend. The holes were made larger 

 also to permit perforating instead of drilling. The lugs and holes 

 were also unevenly spaced so as to make it impossible to perforate 

 or assemble the part in the wrong position. In shop language, the 

 part was made "f<K)l proof" in this respect, whereas the model was 

 not. 



