, 1877-12-28

water, requiring f,f0D times its Gwn hulk to CT
paul IN. has but nc.ciRttll of an inch room, 1t
surstMn1 1t, niNl cu1fne IT, and exert Just
- tntc1, fore or power to expand ns wn,lli lie
required TO cunpteea It to that space, viz: ono
eighth OF a c1il'fc Inch. This being true let
t'1cir cuml,rrko1no boilers and reduce thesr fire.
fDtxes 10 tic size Df an ordinary conmun sturc.
Thc cylinder in which tic main pfht,,n works is
ail the boiler required: eoncaye cYlfnsler-lead
the prctcnt engines Is required TO sustain the
heat and Increased presfiirc. Tho bed OF coal
rests against anu within tho coneare surface Of
the cyInder-llcai. md II fed With aIr from the
IL IS tight furnace, fed with coal OF other
suitable fuel frum reservoir above. Tho hot
afr md other liberated gases pass up pipe
through wate!-tank above tue cylinder,
supply of. hot wafer IL regularly inJectef!
wilLin anil on 10 tlls convex projection OF
the et1!,,der.head, which nj red heat tonytrts II
instantly Into steam; tue em1 u tho piston Ia
wien pushed back the right distance, dlsciosca
a hue III tho cylinder will pipe to allow the
steam to escape Into the chamber or condenser
bciow,.-.a sac.iurn having been previously
t1le pi.tor concaye jetting, almost touching the
convex surface 0f the eyilDdcrtcad, has but lit
tte rontn lor the c1panston Of sfcan,t but Jet
has considerable space lof tho intfotluction OF
hot, with = solii two.inch pipe leading duwn
vertically through Tho cylinder, viii, a valve,
antl nc-fourth!nch. diameter ori0ce, Is ready to
discharge Of Inject water on aud rlt!in the
more II desired, In tho tank above. l
hays estimated that one pint of water
thus used would .nove tic pston
OF N ordiuarT.slzcxi steamloat and Its necessary
IN water suddenly On an cnglnc In ills shape,
as iii Immediate c1Hloston would take piare OF
the cy1inder.lc7l, being red-liot, and thereby
being the weakest part, would blow ont, or, II
acaunon shot. or perhaps tho whole. cylinder
give way under the sudden pressure and cxllttie
III burst like 4 canson. To prevent tllts. UNDER
meath the cylinder arc two condcnsing air
slea'n aud air in the condenser behind Il, Tic
other from the hot-air. smoke, and gas Of the
llrc.iuc. Which is controlled BY an otcillating
wight which again il controlled by the f1orc-
nlent of the u!ston.rod. To facilitate the opera
t!on Of the oscillatlng weight, aud also as saic-
ty'ralye to tue waleF.tank, Into Which, abuve
the wnter, II discharged the bot alt, gas, etc.,
fToM tue fre-fiue or pipe, Is axcd small shaft
with wheel, esying turbine action by the
watty.tank. Thp usctllattng weight 10 connected
with fuycr-rud nborc to this wheel, mud exetts
Its force 70 condcnte hot alr, steam. aud gas
drawn from thu wates'tank within the aireham.
ber uuler the cylinder. With which it II connect,
cd with vnive that n opened At the same tme
or an instant before tho water Is injected on the
| irc.ptate. This arrangement. gives an elnstfe
cushion to overcome the tncrtia OF the piston at
tile time 1t receives the plrssure Of the steam
| and Ut the same time being capable Ut greater
| compression than steam, the explosive power /.
III It were drank up without dltninishlnx much
OF It's expanding power, mud as tbs hut aIr IA
rendered more expansive by the introduction
Vi Atean,, 1t reacts On the piston with equasaeil
| or reactluS fofce the s1rlc 10 my sDriug would
II MORO Il required valve mis-! open tue atl