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About The west shore. (Portland, Or.) 1875-1891 | View Entire Issue (April 1, 1881)
94 THE WEST SHORE. April, 18S1. THE VR BAY rilOI'ELLKR. Rine tb Aril Introduction of the ten pro palter, InaanMrahU anadinoetioM of th. orig Uui lia Ura Uca nIu, yt It U Jultttd that with tbt propeller la ordinary ut, lb full efficiency U not UHaed. Among maehaaioal appllaao. for motive tan, bom be bora more eloeely atadUd thu UiU, yt lb reeulte of than tdi b.v. sol bora M aatiafaatory, Wbea th H Bay lyetem, which It l th par poo of UiU erliel to daaoriU, wu d.viaed, It (MM great a departure from custom eud theory Uiel few Ultevtd any greet advantage would re tail, The system dm gradually developed, bow trer, from theory to iprimnt, from iptri. wot to practice, Mid now wiob to author lljr m Iran It foroed to admit that tin reault of prtotlot, ii!um thy bar gar, iUunp the In via Una m m Important practical edvanoe la eorw propuleio, ' Tm larentiaa date beck no further thu 176. Ia that year Mr. I Iky look oat a patent lor mw form of uromlwr br naaa of which M dlgnd to obviate th Um of power oeusd M tb eauo of ordinary acrew. iy th tuna Uel rraal throwa of b them. Thu hu In WMttoa claim, to fTot by th employment of two orewi working la oppn.il direction, lh bUdM of Mok lorow having purlioa. mil away to paraut of th projection oa thnoa of lb olhr eorew paaaiag through thorn. Oar engraving whtrh iwpnMiU th prMllr a fllted to th a a. for Mario, illustrate, the manner In which Ihla I effected. Th carnal Ml la motion by tb mh nrw r wwt by thiio prolaod by tb Olhr, tb reault bIB( Ihtt til wbal body of water I threat directly astern la a lino with tb ail of th (hip. Tb different motion to ba Imparted to lb two aoraw mast, la all whr duplicate on (ins ar aot provided. Maaaaaltete tb a of gearing t aad againat th prejadlo that ba a atroagly prevailed to th M4nraMit of mHI aa arrengemral oa board ebip Mr. I Uay ba kail to draggle for him taara, w ken a Bret Mbmltlad hi iBvmlloa te tb aollol of Wading aaartB engine, re and aaiaaU.te, b wa mat aot only by th ohjeclioa to (rearing of aay dwerlpUim. bat alio by oppo MtMMl a tb ground lake by anoat of lhm, boa vtewe wr that lb pnpllf Iteell ww a treea that II ld aot tnar aay roagh Bug. Back It woald b aar to mi with la a wy, II wu alw tnld thkl, grenting U immaaliy rroat aaoa daagwa, II aoahl u J. amlwiiata b fuuUd by thing Analing wiia wauta 11 migai com ia oaaurt, Thre wora, bawonr, a fw In prrjndio) pirenai who kwkd apna lb lavonlioa with man firarU , aad la I NT th oootuty whbcb bad bwo lurml for It dTlmut re- aulrad apaa aafiaf a Mta of tnlt atal witb lb iUud Uaarh lUiok, whirk wat Dated with lb pmptlbw, aad tby alrM tb ipnaMil la Mr. Pollard. M. laL l R Tb namlte rvparted by that (mUmm lailamd Im dlrwrlur try frUir inaMla oa a lrff anal, and a aorew ooIImt, Um A'Uuw, nl aWal JO tea bard, wa Alted with tb Iw llay opllr, aad atad a aaoareafal ran tknmgk mgh waUr from lb earth of Kag Iaa4 to tb Th . (k h arrival thwa, Iwwwm, It wat Iaa4 that tb gwanng bad Wawa a badlr aU Ul it wa IkmiU to aataaa tedrtr Um prapUr with It, w duwoter Umb Bad a ana of trial of aiod alt aiialanlii by a4t.teal aad dwtatmixl iwrla, la ardor to tert lb twaor of Um It hay prnprflar agauMt thai of Um mh kanwa fan of Um rdury aorew, Th remit of 0 aafarWMOl ld a awa of H otrtaiatd by wrw with a bmU of Um lind.ih n aa hUd I Um L4 B oraVa, K finaragik wm Ihl rawll that Mm teaai yarbl, , W atl 1 7 teaa aad M a powor. wa kuwd aad Hod with tb I llay prapolUaad tmnnmdi aoartef. Tha raaaita of tb tmb) anadacted by 1 vi. lr..lL.1 it,, nmrui'i ouniultiog onjl or thowod a upriority or th r''in7 orew KUiilnt to a lanng oi nnjr u"-" -ooal oooiumution. It wa then docked to give th proillr tb crucial Ut of a long ocean voy ti(t 10 a Urg lii, and th Oro Jorii ' Uwtwl for in purim. Her length ii 2.'U ft. ..... i.....hi. .-ii it uid rfnnlh ID ft. 3 inchci. Hh. ii filled with two eompuund, inverted, di rv..,.!..! Mirfajia.rfindf minii cnuine. In cyliadcra are 28 inohe and 64 inch in Jime l.r m..lil ith a li-ntrlh o(ltnikOl 3 ft., her power nominal being 1 10 horte power! br tonnaga, ntt rrgialer, ia hill tunaj ili)lo-nient on IN It. mean draft, 2.WW toni her ordinary aurew bul a diameter of 13 ft. H inchea, and mean pitch of 111 ft fl inch; her le lay ro puller haa a diameter of II ft, and a mean pitch of IMfL A aeiira of trial-runa waa male with her at Cardiff but autumn, in order to obtain data aa to her id with tha ordinary acrew with ahioh ah waa then fitted. 1 lieae trial having been onncluded, aha waa litU-d with the l)e llay iiniieller, a ia llluatrated in our engraving. Th tnala which followed gar very remarkable reeulta, a will h aeen from the fullowing com paraliv atatemant, which we eitract from Mr. Volkard'areiMirt: Four run over oonra of Si-fifth milia, two with tide and two againat. (Koroa of wind two to four.) Hea oalin. The liguroa in th llrat onloniB ahnw th rreulU of a trial niKlo on llie IIHli of July. IHSU. with the ordinary acrew; and Uioae in Hie eciiid column th reault of a trial mad on th 10th of Auguit, 1SHII, with the I llay rroeller. r circa of wind, Hire, Ttoi rwulull'ioa flu 4 rant i.779 Aim 4a m iniuula , 66 H Nlj ttfvwur Uivrer" mi I nnu) 71 1 Inn .l.i ,llt rtlllwal tvwm pr1,f . (Ill Ml. J Tims IMraa. villi llil IimI a aMit!., t4 m eilli aluel Mia. .11 a . tf .11 J l M kitolj pof mint M m mm ' I90 W " 10 M U " 11,) Tuntln Ut HrrU tlw. r Vw..i. a"lMtlun i Mi a-A 1 " 4 II Tu rttuUi.l II Mln. 1511 U n. Tl ft II 11 M Hon. i ii 10 KtMHi wr hour, lit t lit I IU. ai MS It Mln. Bra i a i Almiat immetlialelv aftxr her trial with th le Hay pmiielUr. th Cora .Uiii-mi left for Alex. aadna and tha llaouU Mr. Iluoovk accom. panying ber aa th ngineer DominaUd by the 0Mniany to waU k and report on the working of m pniiir ana gearing during th voyage. Tb awing with which ah waa thm Httiul n.l bleb had beea dMigned by Mr. Hiaoock. failiol to giv eatufaolion-not, bnwevor, from defect ia deeign, but from faulU ariaing from loo haatv oonatnietina. iHirfng th. vnyag to Aleiandria, with 1,7(10 tone of ouira. tlieuc Imht U. IK. Il.n.,l .. ken with a heavy freiKht of grain, that gen Uemaa report th pr..llcr never to have aaawd bim aay troahl, and th aaving of fuel be wa aid to compote, fully bore out th re. anil obtained at th trial, it Card.IT. Th. '' of geanng adoitfal waa bar prevnl itarlf anreliabls and Mr. Hiaoock, oa bi return, dugnd a e of mitre-toothed gearing. Th arlr .haft, which u of atcL and came on of the arrewa. ii . ,.i, of tb maiB abaft, thigh of le diameter; and K..Ki in. ooiiow anait ol phuaiihor saa carrying the other acrew Th. Ai Bwtaoa whe.1 m keyed ob to the mam .haft, aad lraa.mil. a rev.na motion u th third aeUoa wheel oa th hollow ahaft throagh th mterwMdiary or aerood motioB heel. All Um wkeela. which ware f ll.. ft .:- 'Tn,iTW, " oracibl. awl; and all their beanna. were atrm a aoh.l .... i i P'V' h'r "'" U Iran of th. thT' aaa Kited ha ah. relaraej from ber Mcood ya te llreaMrbavwa aad back, oa which th. preHU, wa treted teMrely b;m..Un,Tn th! northern teal with tha moat tempeatuooi weather Captain Cawley, her oommander, had ever ei perienced. Taking on board, at Cardiff, a cargo of coal of over 1,700 ton, tba Coro Afnria left that port for tha Thamoi on the 6th of lut month, and met on her jonrnay nn ohan. ncl with the heavy atorma whioh raed on th 7vh and 8th of that month. Although oonaid trebly injured in her upper work by the force of the aoa, the ahip made a good run round to the Thamee, beating all th ateamere which itarted with her. A few daya after her arrival, a large party of engineer! and gentlemen con nected with tho ahipping intereat were preaent on boanl to obaerve the behavior of th pro peller during a run from Graveaend to th Mtplin and hack. On thia oooaaion tha verdiot waa that there waa a total abienoe of the vibra tion cauaed by ordinary aorewa, no atern wave or waah waa perceptible, and the motion more reaomhled that of a Bailing ahip than that of a acrew-ateamer. Th veiael'a a peed, aa far a it oould be tried in a heavy tideway and .hallow water, fully bore out the reault. of the Cardiff trial. The report of their ooniulting engineer hu eat iafied the director, that the De Bay Propeller Co. that owing to the auoccei of the new gearing they have no further diffioultie. to overcome. Duriug the trial on the Thame, iuat referred to, although almost new and aoverely tried by the pa.iage from Lardill, it worKea .moomiy ana without a .inn of heated bearinga. The owner. of the t'oni Maria are now to latiaKed of the advantage, of the De Bay propeller that they are taking atep. to have it fitted to other veaaeli of their licet. A. further experience demon atrate. the advantage, and reliability of the ayatein, we may exptct that an invention whioh claim, to have taved aa in the cue of the Cora Maria nearly 50 of fuel (even if that initauce ahould prove to be exceptionally fav orable) mu.t aoouer or later be widely adopted. The gain to commerce with auoh oondition. will be o apparent to our reader, that we need give no figure, to illuatralo it, and, after run ning nearly 12,000 mile, of ocean journey with out the leaat miahap, Mr. De Bay baa fully removed the ground, for the fear, expreaaed a. to tho weaknea. of hit propeller. It initio and Scientific I'rtu. Till first iron bridge built in Idaho ha iuat been comploted acroaa Snake river at Blaokfoot. It i. oompoaed of Dve .pane, each 100 ft in length, while on the eaat aide ii about 00 ft of approach built of timber, and on the wett aid aliout 23 ft., making the entire bridge 583 ft. in length. There are aix pier, or oriba, which ar built of heavy timber. 12 inohe equare and tilled with rock, over 100 oord of rook being uaed for that uurnna. tha waioht nl tha nriha being eatimatcd at 75 to 125 ton eaoh, baaidei the weight of the bridge. Exoowmixt or Scikntifio RmaABcn. At the recent anniverury meeting of the Royal Astronomical Sooiety of London, in addition to the ordinary buainoaa, a resolution wai carried by a large majority to the effect that a general meeting ahould be held within two month, to take into consideration tha ntiaatmn nf tha an- dowment of acientilio retearoh, and to ezpraai ... . ui ,ui ooi(y on tn .UDjeot. Blui'iiim Albcmkr ar Mean, or ELicraio Lhhit. The albumen, from whioh th bood ooninaclo bay been entirely removed, ia tub jected to th acUon of an eleotrio light, the reya of which are properly oollected by mean I lmtniXe-' ""1 W1 be bleached within 24 hour. The albumen may be in a dry or fluid state. Klkt.IC LlllHTIlnimn Tk. P..k .U,,MWUW.W-' rnrot propow. to employ th eleotrio light in 42 lighthu.r, along the ooaat, where oil hu till B0 VT" UP preaent tim. there are bat eeren eleotrio lighthouaaa in th whole world, three of whioh belong to Fraooe.