Richmond enquirer. [volume] (Richmond, Va.) 1815-1867, 1817-09-05

YIELD so often that they have been rernorcj TO
give PLACE 10 new ones. That we may safely
conclude and say, that thaS been proved in
practice, tSt tissss bc{cTS eanR0i be scglodei Ia
do any serious injury, not 10 such degree IS
TO force through the furnace walls ufa mill and
much less 10 force through the STREET iron Guy
ering OF the boiler in the steam boat .Etua, by
the elastic power OF steam. that aiwaYS rises
gradually, giving time FOR the weakest part To
yield. lfit mStantaneously rose like S,inrow-
der the effect would be suite different. fdety
contradiction, or amy person to explode one Of
my boilers by steam.
Now, cannot any steam engineer make per
iectsaie steam boat on these principles, so ciesr-
iycrPiGiHed even to the common sense Of all, by
adopting Il cytiHdric boster mat w;il hold 1900,
1000, 700, even $50 pounds pressure 10 the
irch area gifts inner surface, and eguppiug it
"ith t,r0 Solf 0ctlg safety valves, as lhaye done
on board the iEtna,) thai one 81 them navy he
enclosed with q cover aud locked, after il has
heeu loaded and regulated io,iti with ccrtaiii--
{: tie instant the pressure rises TO the great
est pow er he ever intends to use, say , pounds
TO The inch, ifhe chooses IL work on the per
fect Wait and Boltous princir, of condeusing
10 form a vacuum u obtain htS power, At ne
chooses 20 work with the elastic power of high
pressure 70 0Ry dsgYsc, since he is now inform
ed aad CONVINCED, th1t as Tie pressure rs rails
Ell the speed Of his boat will be increased, and
t!ie consumption OF ms fuel !@y pc lcSSeuCG t.
one Half he may load MS safety valve 10 litt al
ST., 10, 10, 20, 80. 80. 100 or $50 pounds to
the inch with safety, just a. Tar as re wishes 10
pht my principle IN operation, to save e%pence
or lessen the weightOr the consumption ot fucl
The less the pressure he uses. tie slower VIII
be the speed OF his boat, bat the people VIII
believe ii is the safer but wiih amy other than
Il circalir form ofboller, he can obtain no fate
", because he cannot prevent The steam from
rising ia two or three minutes to pressure that
viii explode his boiler, III case the valve be not
lifted to Les Ike steam escape. Bui with nay
boier, while he works a conIensing engine
tclth three pounds, he may still load his lock ed
valve AT $50 pounds, and then the fire will burn
down after tue engine stops, before the pres
sure will rise from to $50 pounds 10 lit the
valve, and he may held his steam from evening
to morning, and then start with crest power, e
ven before he has "a spark of fire kndled III his
furnace, and thus he may save his fuel, and ne
yer let hissteam 20. How striking is the con-
! traSt removal from the brink OF destructi-
on to perfect security.
If the editors of newspapers will give curTen-
cy to this ore publication, every steam nginesr
who May read it, may know how tn make Steam
boats H0re safe Than any other mode oil travel
Ing and al Diitch less 1penSe than he can make
the dung erOHS engines used. But | wish
all 10 take notice, that have expended the
greater part of long and laborious lfc. of ar
0"ous ana intense study, to acquire the know
ie@5e which have communicated TO d,Scov-
er the principles defray the eXpeuces OF test
ing them, and to secure my right by patent,
and 10 establish extensive works to manutiic-
ture the steam engines, both at Philadelphia
and PittGburg, to supply the demand that
therefore by this publication do not mean to
reiinquish or impair any Of my vested aud law
FIJI rights, asa pateutee, disc0verer aud iuvcu-
tor. 10 tie good people submit the case
they Will Judge whether it will promote their
interests to support me.
- For sake Of public good it is hoped eve
~ dwsricGn Editor will give tins one inse rton;
for 1t may stop the useless expenditure OF hun-
dreds or thousands of dollars, and save many
lives; but my patience has been long since eX.
leausted III paying for publishing such informal
tion, that was neither read nor regarded,
which, although ii was 10 promote my own in
terest, it was intended to save tie owners OF
each Steamboat at least $4,000, and perhaps
the life Of the reader.
OLIVER EVANS.