HAMMOND LUi BER COMPANY

Manufacturers of

Mills at Sarnoa and EureLa, Cdiforrria

(Continuecl from 1'age 10) clevelop the companl-'s hrst hvtlraulic barker for pulp mil1 use.

Ilydraulic lrarkers ilre 1l()t neu'itt tl're forest products inclustry, Ittt have lreen tlse<l alnlrlst cntirelv on l.gs slatctl for prrlp procluctiort, for u.hich u'ood tttrtst lle lr:rrk frcc' LT this 1)iocess thc u'hole ltlg, ltiter bcirrg barl<cd, gocs through a rrrecharric:rl chiytpcr and is retlttcecl to cIips srrital;lc for thc digestinL pr()ccss.

In \\'evcrhaettscr's irrtcgratc<1 ()1)eritti()11 at Lougvicu', the 1eq-sllphatc lrlant f ill sul-rsist not o1 u'holc logs lrrrt e1 saq'nrill itn(1 l)l-\'\\'ootl leftovcrs restlltillg f1"111 1l1q 'ri- 11[rrv ltldtrfacture of thcse proclttcts irotrl I )9ugl:rs fir. Itcnor-i1g tlre lrurh ironr s1:rlts :rncl e<lgirrgs irr thc slLl'rrri11 is costll' ar-rt[ <liHlcult, ltncl the percentltge oi clean u'oocl rccor-eralrlc is il0t high. Because lrlLrlt clLtt 1rc rcllioVe<l nrore clcat'i1r- u'ltett tl're u'ooc1 is still in 1og fornl, \\'elcrhleuscr enginccrs pl:rrrnecl the 1en'hldr:ru1ic lt:rrltcr t, proclucc lrrtrk-free s1alrs an<1 etlgings, rcaciv ior thc chippingplant n'ithottt iurtlter hancllirrg on the cotlvr:yor lirlcs.

Logs coming t1l) the long "lrull" chnin are shttr.rtccl mcchanicallv lrv a set ol rcversible trlttrsier chains ()nt(l a series of tu'ctrtr--fortr large trttnrlion s'hce'ls, arr:tll!{cd ill tn'o ollpose<l lines of tu'elvc each t() cratllc the log ot't its trili over thc jets. ()r.re line of these l'hecls has notchctl eclgcs, s,l.rich grip the 1og:Lnd rotate it against thc oppositt: free-rttnnit-rg truntriotr u'hccls. Thc u'heels are tl.tottntecl on su-ivc1 bltses so that the ltngle clf the u'hecl agaillst thc 1og can bc changed. This arrgle lrtljustlllcnt detcrmines thc spccd of 1og travel fonr,ard (or backn'llrd) and is varied bv the ()perator, stationcd in a glass cnciosecl cagc facirlg the barker assembly, to suit the size and character of iog' 'lhc trnnnit,n l'hee1s feetl the log across the trvo jets oi \\'ater conring from oscillllting nozzles nloulltcd belorv thc log. 'l-he ltack anrl forth movetltent of the jets, parallel to thc 1og lcrrgth, rclllo\-es itpproximatelv a four-fttot spiral of lr:rrk:rs the 1og rot:rtes atlcl moves foru'arcl. 'fhc log is rtot 1r11tlrr-e<l to rer.r.rain stirtionary becattsc the force of the u':ttcr n'ottld Pellctrate tl're u-oocl fillrc. SprlL-r'ill-ld l)ark Irrr-ticles:rre clirccted to$'ard lt lrack u';i11 rvhich rcturus lhc u-:tter for rettse after lrark lrlrrticlcs are sc:rccne<l out' Ilrtrk is crtrriecl itr|av lrv co11\'e\'()rs for use:ts hog {r'rcl in the ltoilcr plant. -\fter c()llplctillg its otle lnirrttte l);rsslttlc ovcr the jcts. thc shorrt log is transfcrrccl back to thc bull cliain for rorrtirrg to thc rtrill's lttg cleck lLncl llatrtlslLl'.

-\ccorrling to \\-clcrltAeuser engirlcers thc dclir-cr-r' oI Iogs to the slLrvlr.rill lr:Lrk frcc is also lt foru'lrrcl stcp ill i ntitro V irrg su $. rrrillin g Practiccs. Thc ioll orvirr g ltrlr'ltri tllge's :trc rclLlizecl : the sau'r'er has :t llettcr opportttnitv to judgc his crrtting Proce durc nrrtre e lllcientlr- ; delrris ilcclllntllati()n in thc rnill is redtlcc(l ; mill operation is slrctl u1l :trtcl cotrlcvor jams rtre urirritrtized: \\'ear arl<l telir ort batlcl sa\\'s is r-erlucecl fronr gravcl arrcl <lirt imlrcdcletl in llark :tnci barl< is renroverl from t'ood che:tply errottgh to permit <liversion of the bark ior other pr()(luct trr:tnufactttre as tcchniqtrcs arc <leveloped.

Mill Crew Goes Elk Hunting

-fhe creu- of tl.re sal'nri11 of Tycer, Nealy & I)ennis, Inc., (irants I'ass. n'ere the guests clf the management cin a \\'eek's elk hunting trip irr Idaho, the mill being shut down for this l)l1rpose. The party left October 20.

lnstqllotion time qnd cosl is sloshed becquse lhere'sNO SAWING! }IO P[ANING!

N0 ilTTl!lG! N0 PRlttllNG!

is l216 St. Poul NEW YORK OfflCE cHtcAGOOFilCE..... sAN FRANCISCO OtFICE I.OS ANGETES OFFICE 5lO0 So. EoylcAvc., loi Angeler ll,Colilornio Logon 5'6245