The republic. [volume] (Washington [D.C.]) 1849-1853, 1852-03-03
leaving an unerpendcd baIanc. Of.
100000 %

The Patent Office buildings &c. On the 2g.b Of July
last received an official letter from you, placing
the @ork OF these buildings under my charge, to-
g'iher with al The papers and drawings perta IN
ing TO %; "ll 81 which we're duly received and an
inventory Of them transmitted to your Office.
Immediately GA entering on the duties Of my sp-
continent, ] proceeded 20 make drawings Of the
ea'f ring as FAR as executed, from actual adnca
surcmcuts, thoWing also the proposed finch,
which drawings are herewith submitted
~ The time ] received the charge Of the work
tIc exterior VALE Of this wing we're high enough
~ receive the oornicc. portion Of which whs cut
and ready 90 be sCt IN toe building about one.
third u tho archIng II the upper story was com.
plfted the windOw. frames were made and placed
10 the walls, and The each were oil made and
glazed.
Since that time the exterior walls have been
completed, the marble piers Or supporting the re-
naming arches Of the uf per story have been sct
and the archinR Of the building entirely finished.
The plan upon which this wing was commenced
contemplated the subdivision II the whole into
small rooms but after it had prorrcsscd AZ high
as the hyJr ~ the upper story, u was decided 20
throw the whole " the story into one room for the
exhibition oi models This alteration involved the
neC0sity Oi making several changes ia the build
ing, 90 which % will be proper for me 10 advert
firsi, The chinneys had been built ia the parti-
ton walls between the several rooms, which
brought ALL the lucs out IN the exhibition room
in order TO avoid the removal Of thcec rhiuneys,
t1cy we're carried horizontally under the nDOf II
the room, aud built Up In the outside walls ne high
a. The COrnIcc; they were then carried back again
towards the centre u tho building, over the upper
hcr ni arches, and topped out. The horizontal III.
f',uon thus gwen 60 The upper part Of thcsc lJcs
~il no doubt 20 interfere with their drau0ht AZ To
render j. inprudent o. rely on them for any s-sist
ance 10 warHIug The building; ! therefore made
careful calrulatOn ~ the sracc % De heated and
t1c amount q heating surface provided for in the
contract Of Messrs Iancs Beebe & c. ebo were
a. az Tune engaged Iu putting up The apparatus
fJr heating, and found that ulIcn the ssiistsnco
expected 60 De derived from the fires co. the rooms
cyuiI not be depended upon, the apparatus ia pro
gre. % construction would be insufficient 10 warm
the building ] therefore suggest that four add
h1nal furnaces. u the kind now being erected, be
iu' rpln 'he cellars, 90 be connected with those
alfc'1y 90 progress.
As De warming Of buildings crelusivcly by
means % hot ar furnaces is often objected TO- II
WI %. proper lpr use O. remark that tho fiIrnaccs
WIN "hIch ths portion 81 the Patent Office will b.
"dihe', are 81 40 entirely different character
Hohi ordinary hyi-alr furnace and not ID al liable
70 tho 0Jc'ulus 90 often urged against this method
Of heating. The air Iu the Chamber 10 parr,.,I
cntrcly by mcdhs u hot water pipes con. trlrtsd
IN stack, aud connected % boilers. 4o a. a. o,,
ducc circulation ~ water throughout the ul',s
thcse pipes arc confined entirely 10 TIC ,i, sj,,
bcrs ana The main horizontal nucs " the basement
story, and not introduced into. the rooms "a ia
sometimes the CasC the air IN the chambers is thus
heated and conveyed, by iues in tie walls. 10
every apartment In the building
BY Ibis arrangement two important points are
gained iTst, the pipcs can never be- heated above
The boiling point, and stdOm above Isyo Of Farren
heit thus rendering il Impossible 10 carbonize the
err ~ 20 deprive - If its natural moisture and
secondly, the injection Of a current Of warm Air
must necessarily oiect a corresponding quantity 0f
ar pfeyOusiy iu The rooms, and thus inc ven.
Hlhiion' and prevent the ingrcsl Of cold air from