The New York herald. [volume] (New York [N.Y.]) 1840-1920, 1873-01-03

spetmSn- lie, no ooupt - some ueosx WY" p
ostain shncvIe1se o. steam sgs that ~: viarda
encs'' in snres ressiuse nom overkessed steam
and the cause OF boiler explesions''. also
Common sense 70 Isia,s. That steam boilers are
most liable 20 Get IRE 70 buLdings Nnen
cSos % IL
OF very little value 70 him. ] need not take Up
your valuable space In trying 70 reoss ns sss,c
one 20 believe. HIS arguments ere - circuitous
and his logic hollsw the steam pipes ne speans
Museum ns But the sist u his wordy article, as
stated above In to prove In plain werds that steam
boilers are most wnsn SnS ssss that
superheatinG win occur when the nre under sne
boiler is out ..atcgsthsrn and - current n,s o.
from the boiler, by which the pipes wouIa
become hot enough e set Are TO the nrss con-
INV 1r. WARDS description Of the construction and
operation of the boiler referred 10 10 alse eveiy
particular, ~ reference to the boiler itsen wan
The motive of Mr.. Wizard in making this eratui,
tous exhibition Of himself Ii found ~ the close OF
Inventions or drawings Of devices, any one OF
which would have rendered our boiler "aoseIutsy
Weros E nrs9snds sS SaS G
"'''N '''''-'s- '''r' W. c. BAKER
NEW YORK, Jan. 2, 1879.
Fire Marshal Mcspedon's- Absurdities
Corrected. sa
s. aet FlsAf JERSEY CITY, Dec. 81, 1917.
To THE EDITOR OF THB HERALD;- 49,
cI have looked with great interest at the dts
cussion in your columns on superheated steam,
and have been amazed at the ignorance Of the
very first principles or heat and steam displayed
by your Fire Marshal Mcspedon. Why, sir, every
school boy OF fourteen knows that steam is .
vapor, and not gas into which water has been
tai Tan f haoN ouAa
as you remove the heat You condcuse the steam
He also knows that water is composed OF two ele-
Ssnsy Or se e asS Of
ter, and that It Is impossible to resolve this water
into lie constituent gases except By certain
connection with the generation Of steam
IN boiler. The statement that steam
the Hs not
but impossible. II 1t were 80, why not keep the
fires banked all the time and save fuels The state
ment that pound OF steam occupies 1900 times
the space Of pound Of water Is mistake, the
truth being that one cubic inch OF water generated
pounds pressure occupies 400 cubic inches OF
space; and as you increase the temperature and
pressure OF yon ar steam you lower its volume, 10
pounds pressure has q volume OF only ss3 as CON-
pared with water, and.eo on.
Mr.. McSped0n evidently does not understand the
laws OF sensible and latent calOrc or ne would not
advance such theories. Respectfully,
ARCHIBALD JAMESON.
An Engineer on Supplemented Steam.
f.erap NEW YORK, Dec 81, 1872
TO TIE EDITOR OF THE HERALD Ra
sIR-In your issue Of yesterday you published q
communication on superheated steam from Fire
Marshal McSpedon, who calls himself an expert.
He is altoget Their wrong in his ideas on steam.
Superheated steam Is produced by relocating the
steam afer 1t is generated in the boiler The
superheater Is connected with the boiler and Is
heated by the fire Of the boiler or bv an auxiliary
tire. McSpedon says that after the fires are
banked the steam becomes supelheated and forms
o gas. There il hts mistake. Alter the fire Ia
banked the steam remaining in the pipes becomes
condensed unless the Ore is left down far enough
to make steam, and condensed steam is water
instead of powerful gas. Consequently owners OF
steam boilers need have no fears OF explosions or
fires II they see that their fires arc properly
banked and the hot Goals are thrown in the ash
pans and wet out, for there is where the real
danger OF fire from steam boilers 10. And II Fire
Marshal McSpedon would take a few lessons from
some good fireman before he calls himself an ex-
pert, ft would save him from being the laughing
stock OF engineers. eo 1901 ENCINEEk.