, 1877-07-27
STEAM STREET.CAn MOTORS.

as;:: as;.ensnt. nea,en Iisriof. Bill poiE.
STEAM STREET.CAIt MOTORS.
Something About Their Looss, Their capa-
hllitIea, hnti Wording Coet---A LarEu Hav.
Ing tn The street-Cur Companies indicated
t'y the Nenults AlrrutIy Attained.
Philadelphia IL saii to l,c :nti.flc,l with Tho
results IT It's experiment IN surface stcam-cars,
md in View Ut tlc l!crlu!.son given BY tho Al
dcrmcn for trial of such c.lrs In New York, the
statement OF soIsto of these results will bu Inter-
esttnE.
T4e first Of the steam strcct-cars produced by
the lsalIw IN Locomotive Works pr Philadelphia
for three .lays on thc West fntl Hallway oi West
f'htladelpha, aud worked satlsfnctOrily. Il was
a t.'sn shipped 70 Drooklyn a,1d ran TIL Jnnc,
giiiccr ran tho car and Kept It III running ORDER
and. with d consumption Of beswccn seven aud
eight po'lntls Of coal per ntlr, q speed Of froM
sixteen to eighteen miles per hour WIS reache,l
and boiler upon The rar platform, antl not d.
tacttrl. TlerU were faults In It's cof,strue.-
tiOn, and tho experiment was valuable fn
showtnE thu inforurtty Of crank-axlo as
sa''t Mas T'S I'll. ss sas sesSssy osefy
tInn Is lea.ling 10 tito general abandonment Of
vr,,lk-axlea on the ordinary locomotives both
hero and abftad. In tho Initial Baldwin street.
rnr engine, too. tho stlachInery lad been at-
tarhctl to iii ortl1naTy wooden Car-0otly, which,
not t,ciHg sufficiently rigid. WAS rnckel ana
ttrnlnca hy tic working Ut tho machinery.
Sill, this first cur worked on tho Market street
railway in rhttadclphi. during the Centennial
scaaOll, carrying thousands VI passengers md
attracttng much notice through The special cur
respondents.
Tbs baldwin Works hayo sluco turned out All
Improved engine. Tho foundation np0n whtcl,
81 f41n hf,11n
ticrs, and machinery arc attarhcd, IL wrought
irun IrarIte, thoroughly eross-braccsl.' THIS
tcstgn rGftnts tic se Qf existing ours, us tho
francwork emu bc adapted to any car-boly:
fhu wheels aru nude Ut rast.arnn centres, fitted
vii steel tires, an nro coupled by cn1,,cctlng-
rotls VI outside csank.plIIs. They arc as fur
apart IA THO wheels Of tho ordinary horsc-enr,
nnl turn the shortest curve with case. Out
warlly tho car, wcH coH,plctel, differs but
little from the ordlnnry street-car, except
that thu front platform IL ROUNDED OF and in
clnsGd below, with windows a}oye through
which tic cnginc.driycr keeps watch aitcat,
stand ready for instnnt seizure. The htcam
street car entire, In full working order. with
sixteen.ionl 0nstdo lneasurcnent) car-body,
weighs, 12,oo0 pounds. Tho bollcrs arc design
smoke. They c,ni.i however, bc arra,eul to
burn coke with tho same result. Coke might
be used, but ttcn thu l!ttnE-up would laayc ~
DO tnac much mare frequently, mud might
MtGCfSl44kI LILY Hl!4b4p4 HlEUk VI ulElHA4us
Tho h'iicrs arc of the upright locomotive pat
tern, like tluse used Oi, street fire engines In
tiis city. They arn of steel, aoubly rlvctcd, and
fully capable of carrying With Ba!ety pressure
ot ;A0 pollnIs ptr asllaru tnch From nucty to
LOO potatls viii, howuvcr, be abu1,dant!y sut-
tlclcnt far a!l nccas III city grades. The COLI
Atructtou IA sleEl thut In ordinary working aud
III u Try attnosplcrc ITO ssca,tl whatever vlsihiy
e wen liz at"sphsqs !" oi " u sos
Will show, but nvcn then nut enough to he objee
t!onabe. An exhaust c!,atnt'cr IL provided by
whirh the sound Ut tho exhaust sttanl In dOmr
away with ana Tug nlaelltnrs aFo thus absolute.
thcy puff fatntiy. T'he throttle-valyr lS SO ar
ranged that In stuFt!ng no Jerking Of tho cur
can he felt, and the t,stfnn Of tl,s valye-closc
car-glycs tle great advantage Ut stopping III!
Startling with Rrrat rrotnptnrsa. powerful
levar brake 4 provided, by which, In q single
,nuslou Vi the bur, tho engineer can stop tho
horse-ear stoppagc. Considerable ttrne Il thus
saved, however !c!sdrels The. pruSrcss Ut tho
cur may need to bo made Tor the sake ot snfcty
The news stcantraF ;. Baldwin" was placcl On
tho Market stsyes ltno March u last, ind sil'cr
then has BEEN keat f. conttanurla!ly usut seven
days per week, making lightweight utltn per
aay, Of over iU,000 nlllrs thus far, with total
repair outlay oi s3.l5 f,r o new set OF brake
sltSs' Thn totaI Quantity Of eoal oa consumed
10 the milo run. The quantity Of water used
tcr snfle IL Ot{ gnllonH, md the evaporation aY-
cragcs trycn imun'ls Of water to oile pound nf
coal. Thu working ol the Murkut-btrest steam.
c4r has given data fur tbs calculation OF cOln-
parntiyg expeilso schedules, nnd tho exhibits
hun Ist. an'i est.lnates furnished by the car
companies stund u follows:
cost or RUNNING osR Two.MonsH CAR nNk DAY.
F"s one car nine horsss are 1aqa!rod; 6rst coat
Feed and sial!s s1psn.cs, ,tfesd, straw, hnst.
lara AtHh1 t5,RA niI N}Fin nil
shnelns of nine horses, st ceats........... "a
! Aanttaance of haruesa Ut nine hosscs. At -,
Asaenanec oi niny horse. i,sas sia;ijo,
1t 31ti pct cent pet Annnm for drprscla'
Hoa, equiyaleAt PET day for ulna horses 10 /. u
Maintenance Of cAF..... .............. :. %
Wages Of uftsFf....-... .:.......:......... LIS
pas a'se 1a;s.s: sS;.s: e. S sS'. & sas seS.
| per annum ...+.-............,.,+.. .37
Totai..,....,... ........................s 81
eo.r nv Mukalxe oys 4rEAx-cAp 0ax mar.
Fuel. ~ miles, at y pounds psr mils.. equAt
TO 70 ~ rouads, 4 g pcE 2. $40 pouods...-.N' g
WI Wsso: q susinssf., .iItesa ioai;, ii Is sena 49, ~
xxDcs,is Dss, aEa, sad .; g; IN. n.ch,y
Daily Interest on cost of stsam'csF tSa, COO,
+ Ut psf cent per annunl.-.."...... .....+ AZ
s..faa .te.ia o.r1 hoi.oe.i Il H. 5s pei d.y q
equal IN 3oos .45 per car per aRnuta.
The stccpest grades tn the Market street linz
are ~ feet to the l00 With sharp curves, s4
| thus far there has lIut been slu9Eo fustanee o
"track. .lumpux' Ut The curves nor " stslling'
| on The grades.
In addition to the steam street cars, in whIcl
tho passcnxtr aud working departments art
united In oIr vehicle, separate m m0tQrs are Ms4t,
to which ordinary ears Inuy be attached. TAa
general principles involved arc the sasne-at
Iron framework casHea the working parts, th'
centre lnarhlucEy falling within this whecl-base
and dutlg nway With tho rocking fofe-and- VI
motion tnciicut 10 tho ordinary duintuY b,
reason Ut the oycEhanKiux weight Til
| .e,t,tnr ali y,1,Era nff hnFlsa