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Model Steam EnginS I M P L I F I E D F O R

Thi finishcil enginc and a small boller iartalltil tn e aoilel boatl8 in. loag- The cngine itrclf ls only r trif,c oro 3 il h$b

Can be bu.ilt withaut a lathe if necessary,a*lwithout casti*gs6 yot*hwe brusing eqwifinent

By C. K. Fankhauser :H.XH#-S:i,iH,ffi""#i3*finished.F"IER a fruitless earcb for flans, for a very simple modelsteamen-gine tlat could be built rith tle r{!orc.' Clos+'ap of eotincaril ho? Grit ol ctlfnncr hfaccil Bcl*,- Complctepartr rcadt for mbly

UFFINc BO XCA P BOTTOMCYLlXDR.HEAD

B E G I N N E R S

ave-rage ome worksbop equipment,f fi-nally designedand made this doubleact-iog, oscillatirrg t1ryemodel.The engine staods a little over 3 iuhigh, has a base 1 by l% in-, a bore of'fi in-, and,a stroke of |4 in- It will op-erate satislactorily on either a pot or-aflash boiler and has su6cient power todrirc a fair-sized model boalThe base and cylinder are brass orb-ronze astiap,-which any brass foundryshould supply from your patterns at ir1'ery moderate cost. \Yhite pine or ma-hoganynay be used in making the pat-

To make tb cylinder patterrL tum tberyliuder fron solid stock Then turo adisk of rvood I 5/L6 is in diarneter bryX in- tbick- (-r-nr*slickness bdudes thl!ll6-ia. allo*arcs for machining.) Thesetno pieces re fitted together as sbown nthe -drawing of the fnished cylinder as-sembly.The f 5/16-in- ,ti.& lorirs the did. !F:*ing nrrfece on wbich tbc cylinderosciUrtes-The pattern for tle enginebeseanii frame can bebuitt uo if serrcralpiecesand fillcted with wa:cThe cylirndermay be cast sdidqn9,drilled out to ff in on a powerdrill press. then bored to 6;ishedsize ou the (Coatinrcd o* lage 84)

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IIOW E$GINE 15 CONSTAI'CT EDDe'4q dnwiugs of ell princlprl p[tr--

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*FORTHEOPOSITEREASOil"Wr&,Itt .V.T. tu6od6Mlarrd, II&c

SIMPLIFIED MODEL STEAM ENGINE(Corti*ued tram 1u1ge z)

$r&ce jrst fui*ed is at rigbt anghs to linehttrees latbc ceaters. Usirg chrce. in tail-stocb'&ill asd ream sbaft baring witl aId-ia- lmle- Revcme casting and square ofiotbtr end of shaft beariry. Drill 3tcsD Dortsrrith hmd drill or drill -press. (The pf,otosshow a rectanCrilar piece at top originallyintended for attarhing a! erhaust start, butfound unnecesary and therefore omittedfmm tle dra$iogs.)Pirtaz- Turu from "td lod. The'*slt ii,{-i!- drill rod or cold-rolled steel, threadedat onc end and scrersnd nto a hole taouedin center of rsston- If cvlinder b canfrul}vborcd and pision is lapperi in, ao piston rin-gis neccsoary.The groove in pisnur will holdgil and prevent udnc l,eal-age- f desired,horreter, a split ring an be made.Crenhrfuft- Build up ftom g.in. cold-rofled steel-.Assemhly.The cytinder is held asainst en-giae framc by a )d-in- bcarilg stud, scle$edirto a hole tapped ia rear of cylinder. A coilspriag holds cylinder agaiost rame. The ten-sion *rculd irsur a dose fit, but sbould Dotintt{ere rvith frte oocillatioa of the cvlinder.Cylindet and eagine-fiamesurfacesstriruU Uelappd togEtberwith fine ralve-Eindins com-pormd- The piston sbould also be caietuttvIapped into tbe cytindrr. The ftywhcd ittumcd from brassaad heycd to sbeft, or maybe a drir.ing ALAltenathtc Conslruetioa. By metins s few.h"ngrs iD deden, it is possible to coistructgD mgtnc of this tvpe without a lathe_ Tlre

lVIn auonmo is aot rhe osttoreurn the lfude blue dip we place inEdps'cth Smoking Tobacco, withsuch-a commeat. People say, -'Whyput those slips ir-Edeeworth is al-ways good-" I[e make sure thet everytio is rhe 6sest pipc tobacco we kaoyrhow to ma&e.But we do lot forget d'ot w sta:Ft-ed selliog Edeps'orth on a satisfac-tioa guaraatoed bacis-aad interrd tosell ir always oo that bacis., Bay a tin today. Spcad a happyhour with its long-buroilg cool fra-grance-aad you rfill agree rith &emillionsof sadsfed Edgewonh smok-ers. Larus & Brcher Co, RichnoadYirgiria. Tobacoaists since ra77.

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Boring cyliadcr with sroail boritg att chnf;ntcylindcr Eay be made from s pice of heavvbrass tubing or from a bras birshins of sud-able size ald bora A dish of bavy brcscan be swcatcd to one side and filid ltat-Then the sorface should be straped do*rr so!ha! onty a small area arooad thi stran portsis ;Jr contact rvith tlre beariug surface oi theangine frane. Other surfaccs can bc iled6mooth- In finisbing the csgirc frane, fiIel-h surface esrin