Transaclions Society Naval Archilecls and Marine Engineers, Vol. 20, iqii. 



To illustrate paper on " Tool Steel for the U. S. Navy,' 

 by Lewis Hobart Kenney, B. S., M. E., Member. 



Plate 141 



Naf93.~ 



Pyrometer cor.'-ecr/a/js - Pre-Pe^^f \200' ff/gf? ffeaf -J2S' 

 Tesf of/7/^/7 speed too/ sfee/s - fo ^e/ecr /nafer/a/ for tf>e U S Nayo/ Acaoemy umter 

 ■SC/7ea'i//e 3244, fo compare sreef fur/i/s^ed unaer spec/ficaf/on 47-S-S, ana ro secure da fa 

 foracurye of cuff/ng speed and e/apsed t/me of ri/ns /n m/nufss- A// fao/s kvara ran i/afi/ 

 ru/ned and no /uf^r/canr or cuffing compoand was used. 



'Spec/f/ed Cf?en7/ca/ Co^npos/f/on of fff'gfi Speeff •Sfee/- 



\ Carden \ Chnimit/m ffy/f^Ofrese ffifisp^oros SfffCffn Sv/pftor Tbftgsfen \fa/}ad/um 



Scfied 3244\-5S rn .js 



47'S-S \S5 



U 



3ZS -€00 



/£gof62a-oo so re /-CJ 



/&S0 ■ iSSd 



- £j(p/anar/or? of Con^puraf/ar*s. - 



1 /.'"r'r .'.'.re ^ ■^''^^f^^'O^/ '"^'^ of e/apsed f/mos ef re//7S of ft}o/s£'/,€-2,€-3''f20-S/j 

 /?af/o ofe/cpsed I Ar/t/?mef/co/ mean of e/apsed f//7fts efrens of offier rea/s- 



fimes af ri/ns ' 



Lei*ier//ff€~ 



Ar/r/7/ngr/ca/ /7?aan of a/a/ised fimes of runs of after reg/a 



^of/o of afietv 

 rar/os ' 



^af/a ofpr/ee 

 per/y 



i/pper//ne - 



dppar//ne • 



Ari^/7}ef/ca/ me(fn ef efuff^ed r>mes ofra/js of reo/s £-/, £•£, ^-A'(20S/) 

 _ /faff a of foo/j e-f, £-2. 6J ^</4S€) ' 

 ffarJo of of/jer fco/s 



LoM-erf/m — -^g^/p of a^/i^r fapZ-J 



i^af/o of foo/3 €-/, e-2, €-3 ^ifS0 ' 

 _ P/'70e of roo/j £-/.62,S-3 per.'&_ -/4Sf/ ' 

 Pr/ce of off/er rao/j per //) 



t Voider //ne — ^"^^ °'' '^^^^^ ^''° ^-' ^^^^^ .. 



f^/ceoffoo/J £-/, €-2, £-3 per //? •^43^)' 

 i^e/af/ya va/be /n cenfs per poi/nd- ' 



r/7e upper //ne /n fa&fe ^/fatrs f/7e refaf/ye \^a/(/e /n cenfs per pac/7d of af/te/^ 

 foo/s campdred tv/ffj 'pr/ce per pound, cenfs 'of foa/s 6-/, £-2, £-3. 



_^ Pr/Cea/'foo/s6-/,S-2'£'3per//>chXAr/f/7. dTeon of e/apsed f/mss of runs fn m//} of af/>er foa/s 

 Ar/fnmefiea/ /neon of e/apsed f/mes of runs m m/n of roc/s €/, &-2, £-3 

 Tf7e /otver /fne /n fof;/e sf?a**'s *'7e ra/af/ya id/ue /n cenfs per paand of foo/'S S-f 

 £-2, €-3, cc/Tjpifred tflfff 'prrce per poU'r-d, cer>t:s ~of or/r^r foo/S 



^ Pr/ce of offer foe/s par /d CKS /CAr/r'A /Keandfa/apsedr/ma.3efrvns/nnj//f.cffoo/s6-/.i-Zt3 

 Arft/?mef/co/ mean of e/opsed r//nes of rans /n mJn of ofAer faa/.5 



ffasptcrfuf/y svd»T?/ffe& 



