416 



FOREST AND STREAM. 



fJijBK 31, 1888, 



STEAM LAUNCH MACHINERY. 



TWO Increasing use of ste aa i 

 lame-lies renders information concert 

 great v ,ili n» ill givln- I U. .-<• f..nM m plat in- li 



field ,1s it Is in • ..ci;il|.i,.|;ill 1 !lillini.'lll i 



lug the series ol articles 



and ijal , ol co isidi ra I 

 Jaunchi-'. -id- wheel ;m.l stern wheel I.-..U- 



The Utile lii'-iii V ::• 

 cojnpaning cuts, is l>m It i 

 to be run hi c< :i:. 

 ableforsoreo launches of the - 



parts .-,: - 



of all part- '■"' •■• i-T.ii 



n,-i, . 



heads anil steam chest cover ;]1V tlirneil 

 i-ylind r !- encased i„ polished brass, th- . , 

 section rods are of steel, link and rods beta 

 Jink- block, fastenings, packinR nuts, etc., nr 

 engine is furnished witu in i>- ■yliri.l.-i- lulu 

 ha, i.l wheel I'"!' turiiiti ; -.; 

 on these small engine . the link and handle 

 following table*, ,if greai use to I 



eiiial-M tor u ; . 



revolutions for the small engines n,,.| two 



style, Where this is exceeded in praotic 



beeo i greater. 



i motive power for yachts and 



.... ■ i liinu' existing practice of 

 tint.' invest mftil a review of the 

 li in their selection. Continn 



•L we prOdUCe this ive-l. illils- 



iln.se interested in 



::,::;;:/■■!/' 



cal- 



,;ni. and tour hundred 

 hundred fop t Iib 1 krgsr 

 .- :■, power of oourse 



Approxi- 







. w 



Lbs. 



Height Size Ol BOOJ Cor 

 r'm Boor which suitable. 

 to top of 



l'or boats a',, i ii . ii iii length the larger style of engine with 



i !,■ , r i:, it,- must, appropriate. It is known as the Snyder 



, , „ . Marina Engine. Their frame is strong ami graceful, the 



as in the steamers of the Western ami Southern rivers. Each 

 Of the engines are bolted to a east iron bed-plate, the plun of 



which is also to be found among the illustrations. 1 

 coupled together at right angles to one another, so th 

 -r> can always he started. The reversing lever opcrat 

 b,,ili engines and with it steam can he cutoff atone-: 

 earhih:, stroke. A spur wheel is shown in the cut in ct 

 to higher speed is wanted. Knghicer's data as follows 



Approxi 

 mate 



U'-lght 

 Lbs. 



gi 

 M 



6 to 81 

 9 to 12 



r.-to i»» 



Bed pi, 



Dm Size of Boat for 

 H'tC. Cr'nkiwhieh suitable 

 •In. ShltS 



to 30 5 to C 



80to85|6 to 7 



40 to 60|7 to 10 



(10 to 75' 8 to 18 



" Heigbl of center of shaft fro: 



in respei i to boilers, we gives-. 

 • i . ,;..• h- :i passes up through t 

 other th- water circulates thro 



kinds of verticals. In 

 idcd by water, in the 

 id which the heat 



ami are inspected and tested up to -JQOlbs. per square 'inch. The cut 

 <,f the tubular boiler shows tlie manner in which the water circulates. 



ire cut near top and bottom of the furnace, to remove 



liment from crown sheet an, I water leg. The water is 

 eai ried high above the furnace, ami danger from low wafer lessened 



. ty ping as fitted. The outer shell is nowhere exposed 

 to the action of the fire. Ash pan, grates, sinoke-honnct. spring safety 



I grange, water gauge, gauge cocks, blow off cocks, feed 

 check, feci globe valve, steam stop valve and whistle are the princi- 

 pal linings which go with the boiler. 



Dimensions of Boilers. 



Sbse of Boat for which 



suitable. 



(Approximate.. 



Ulani. of 



Boiler. 



Diain. 



U a S'3-H 









Boiler. 



Tubes. 



*V=3" 



Length. 



Beam. 



Draft. 



24 



43 



IK. 



SMX «A 



20 ft. 



4Mift. 



22 in. 



26 



40 





m ■■ M4 



22 " 



a •■ 



21 " 



38 

 SO 



48 

 4S 



2 

 3 



4 x m 



26 •■ 

 28 " 



to$ 



87 •' 

 38 •• 



33 



48 



2 



Mx sji 



30 - 



o •• 



30 " 



3(1 



48 



2 



5X6 



32 " 



6H " 



32 '■ 



38 



54 



2 



6X6 



85 •• 



r •■ 



35 •' 



11 



60 



2 



7X8 



38 '• 



7^ " 



38 « 



4(1 



7(i 



2 



8HX 8 



40 " 



8 '• 



40 •' 



18 



82 



2 



» 



45 " 



i" • 



48 " 



so 



82 



2 



10 Xl2 



fir, •• 



u " 



U " 



M 



85 



2 



12 X12 



70 " 



12 " 



80 " 



Tiie water tube boiler will be < 

 lions A is the dOme Cop or sr.no 

 water space; D the furnace; and 

 si,. II of 5-16 lap-welded wrougl 

 twelve hundred pounds to thesqi 

 acting as boiler Hue, No 8 i 

 of a pint- threaded on tin- outsi 

 with a hole in ami through :h- c 

 alloy which v.i 1] me 1 1 onti 

 and leaves the plug uncovered ol 

 of the fire, and as it nulls the si 

 boiler, putting i 



lUglll i 



2!..ix2!.j. A I., Ml.-.' II, 

 -iehrv tulies and is > 



For small iaunehe 

 the company. The 

 lhatofatwentv-hici 

 wh—i is fifty inches 

 inches. 



Tlio cost of boiler- 



old fifty, and thee 

 ihoiit five hundrct 

 ...il.-rswillbeabou 

 iml live hundred at 





matches 

 VALE 



bhisurii 



■aliens to tin- bow 



lapsized in a Bquall in 



l.al.e Chainplaiu Captain and 



