SAVANNAH 



^/l Ma/A,Oio, ' /" /or eac/i J-'O'o/ /e/?ff/A 

 ^ £//a. a/ /rf///efreej_ j i//a a/ cap 

 ffchfjpri/ same aj maj/rmaj/ , J/^6eem 

 c^ia-- J' for eac/1 3-0' a/ /fn^M^ f///n^ 

 Jlbbao/77 c^ia- !" for each 5'c>' of /e/7a//, 

 Pc/r ^ am -^ ■ 



Yoraj.^iO.' /'for each ^'c^'of fen^ffi. 

 i or ^ of fa of ent^ of arml ffoyaf 

 Yarcfj^ aiff, = r for eac/j S'O' of /trj^fff 

 Topj, fore £ mainr "^/o Crea/n of jf7/p. 

 mhren^ ^ mom fop i^icfffr. 

 Top/not f croj/frcej ^s of rcjpecf/t'c 

 mpj . 



Trejflefrecj, aepfh'^ of /7ec/ of fop/7?oj/ 

 /fjic/r-cjnj '^ appff/^ /e/j^ff?'f iv/c^f/r of fop 

 ffonnj/^^ Piagin^ referencoj:- 

 A'oofioeiJ ffoof/ne' Murphy £ Jeffert 



J/tfp MeOef Jeerery of f^fx/fo fJ/aoi^ 

 frt 1333. fm^gm! 

 'Jfjorf ^no/)or] Party Ifyer, CfoHoi S 

 laoriof, eel 1336 



CCAafUd 



iV/rreJ 6ar ropfior/ed ir foor iron iroc/fefr, /a 

 offjfrip, roa/oo in iron joikftr oofnao of rot/ 

 CanvdJ roi-erj fop afO mOoard liOo of w/fO^i 



Orotvo fe io/M ftriv erfaii/'oo frnrtir/:- 

 r/.j C/jape//e, £ff.f>raf/ooafMujeum 

 y/n/r/j/ooiao /nff'fu/ian CJre. IS /3Se 

 fea/o Ji '-ro- 



Figure 7. — Reconstructed drawing of spar and outboard profile of the Savannah. Dotted lines 

 indicate working sails. Standing rigging only is shown. Royal yards were set flying and 

 were crossed only when the ship was under full sail, never at anchor. 



the lower deck at the fore end and in the hold at the 

 after end. The crosshead was of iron and probably 

 had shoes at the ends to work in the tracks or channels 

 in the frame. To help steady the crosshead, these 

 shoes probably were a foot or more long, for the 

 loading of the crosshead is spread out. The pitman 

 to the paddle wheel shaft is to starboard of the center- 

 line of the engine; the steam cylinder piston is slightly 

 off center of the frame and crosshead; and the piston 

 of the air cylinder is close to the port engine frame. 

 The steam lines to the valves of the steam cylinder 

 come in horizontally over the frames. As has been 

 mentioned, the frame may also have supported the 

 paddle wheel axle bearings at the crank. 

 This engine has been criticized by some writers (see 



Tyler's-^ resume of Gilfillan's"'' comments), but the 

 Savannah logbook shows it gave no trouble, and should 

 be compared with the logs of Sirius and Great Western 

 as summarized by Tyler. The relatively slow piston 

 speed and small power put little strain on the moving 

 parts. Tallow was probably used for lubrication, 

 being introduced into the valve chest by pots on top 

 of the casing, where radiated heat would melt the tal- 

 low. From the valve chest the melted tallow was 

 carried into the cylinder, and from there probably 

 passed into the jet condenser. No doubt the lubri- 

 cant became a sludge that had to be removed from 

 the condenser at least once every 48 hours. There is 



-» David Budlong Tyler, Steam Conquers Itie Atlantic, New York 

 and London, 1939. 

 26 S. C. Gilfillan, Inventing the S/iip, New York, 1935. 



PAPER 21: THE PIONEER STEAMSHIP SAVANNAH: A STUDY FOR A SCALE MODEL 



77 



