The sun. [volume] (New York [N.Y.]) 1833-1916, 1878-08-04
COMPRESSED AIR rs 4 Moron.
CtiiiSing the Enormous Pressure OF 5000
Pounds Per squire Inch.

Mr.. Henry Bushnell Of New Haven is the
Inventor md constructor 81 "a new compress oil
air motor street ear. the chief popularity Of
which is that he is able to force mir into his re-
ceivers until his gauge registers the enormous
pressure Of more than 5000 pounds per square
inch. His receivers are tubes. tho largest Of
which are twenty feet long. and only eight
Inches in diameter. insid" measurement There
are four Of these. two lying side by side above
the aXles. and next TO the wheels on either side
OF the car. Between them at one end are four
other tubes, each six feet long and six inches IN
diameter. inside measurement. The material
Is wrought iron three-eighths Of an inch thick
lap-weded The heads Of the tubes arc ON
and II half inches thick. and are welded in. The
double cylinder engine which utilities this air
In turning tho wheels Of tho ear does
g gimo ul atydr,m "' ,piahE nom a -t1Am en-.
only two and thror-fourth- inches ia diameter
inside measurement. Tho machine built by
MIR. Bushnell 10 compress thu mir consists OF
three steam air pumps. The first and largest
Is merely f'eder 10 IN" SECOND. The air that
comes from it Is coni"nsed 10 pressure of
worthy Of The proves OF the second luap. which
IN turn brushes il into a greatly uallrr COM
pass Th" thild pump gives IN" iual pressure
The gaug"on IN" COMPRESS. ng machine ha,
registered 5000 pounds per sgparr inch. Tie
plungers az the second and thiri puml have
no head'. L'y ar merely rods 81 steel forced
into vessels containing OIL As the plungers
N
oil falls and riso. adm tiny tie nir
through one valve ma f,r.in. II OH
Of nnOth.r II l. ft.rrfnr, necessary
10 have th, npr. ina, ~ mo i,irnt,or' n,lv ~
tight moi Ain ilglt inder th,. tr,.,f 1ndnus r,.
sure An Ike oll uth r Dnl stances ,,ivs. ,ti,
heat Will. Being oolnurs,sel nul n il uo,.s
sArv 10 cool in. ,hnnlR.r thnf Grst raseivr- thn
air from tn. tlird uump by A sIVering Of ro,t IN
waste saturated in water On he other hand
the expansion of the air as il il given Of M orh
half revolution Of the ear engines MI orb, Anai
mud after running the car fnr n short linn. tLr
engine rylind. ~ and ne,,,i,, MIN. ara Vii moi
with fro.'. THIS cooln,ss DESTROYS in unrt fhe
elasticity Of tho mir ~ IL enter, tho ~ n iars
To- remedy this Mr. bushnell will surround tLn
cylinder, with stout metal iu.i.,ts I1rrefh
which he will f,rre air wit1 Tho MD Of "A small
pump Eeared 10 In. unrhiurry 81 The oar Tbis
newly-comir, sci air. he saws will sunniv h"at
enough To- keDt, the evil udnrs warm
Tho writer r,le rr,,utlv on tl,n nn,v ca- M
far on thp Nhitn.,vill,, r,oI ne VI pn-Irn III
could 10 wititnut int.rfarirV win III. tr,i,s ~
the horse cars THO tnotinn ,yas ersv NH ,t
times about t,vire ms rauid III. Tint ~ "A horse
car Tbo r'.v, ,,i,i.i.,' t.,,..,i r. %.
nrnrurilv in stnr,in,, and s,Dn'in,, IN, li
ttnre travelled in ,,Ginis .nd ,.tiIr,,in, ,vns a
little over "A mile A. tin si.t ia. ,,ai,'5. e.
tered 500 bounds Al Inc rnti,rn Tho Irasl1ir re
indicited yns 500 t0ni,ts WhIn tit mir w. a
allowed H. es AIN. from ., turned .oct ~ r,,,r
esn,,t,,, .t',,' ~, ,,', % Il" ,, '"i ~