, 1879-05-31
ELEVATORS,

II ~ Il ~ L o1ACs
/ HOARD or GOVERNMENT EXPERTS uyQuAL1-
r1spLr OWES THE HALE MACHINE TIE pnEB-
EnRNCH.
spec!a' Dfsea'eh to The 7sfbunA
WAsu1soToN, u. G., May N.-Followtng fs
tho report of tue Doard OF Experts appointed by
Secretary Sherman to investigate mud decide
upon the merits Of the several classes of clega-
tors In use In the United States, the object
being to acruro tho best maclinn tor the Cllieago
Post. QGlcc, now In pyoccHa Of complexion:
WARRINGTON, D. G., Mar e. 16D-7o the
Hon. 6oliM Sherman, Secretary af shs Treasury
If the UMi!rd S'ates-DEAR Sir: The under.
examine anil report upon the in,ertte OF the
planB, specifications, nlnl proposals submitted
by l,u various blducss Tor tho passenger anl
mall elevators for tho new Custom House anil
beg leave to submit the following report:
All bfddprs desiring It were given ample op-
po,,uulty to explalu their several plans aud Tho
varous .levIcrs proposcd by them for lnsur!lg
d Va,ts W weru made 10 New York md baltimore,
that wc might personally exnnine samples ol
tho machines proposed whilst tllty wcre IN
daily usu; IN Eost caacs wc ,scrs accompanied
bY the builders Of tho mnehnc8 or those rep
VYs wcro thus conb1cd to form correct tulg-
mcut Of tlrir pcculilrtfes OF agtt0n, eonstruc-
tin,I, n,,l efficiency, and to obtain, as iar pos
testimony OF practcal rha1actur ns 10 thu
durability, frequency Of repairs. numher OF ac-
eklerts md tE.e nature Of them, rs well rs other
poInts which We thought 1t dcslranle or noces-
anry 10 know,
Alter careful examination oil aIl tho facts be-
fogc us aud ulaturo dellacrattsNi, We hayo cutna
| to tie conclusion that tile clnBs Of elevators en-
| ploylus nSdrostatic pressure as tho motive
power arc, all things considered tho most satis-
| fnctory. ..
| From that class We have unanimously selected
| ihn plans nms psopo1a'8 presented ty w. E.
Halo S Co., Chicago, as the most advantageous.
| We give below s0nle of tho reasou8 lOr Our
conclusions:
Tie h,,lraulsc elevator possesses the follow
| luz qualifications: Extreme simplicity, thu
| n,Snsw,u,n amount Of Maeu.ncgy, ns,senca of nil
which the roprs run, disl ctis!nE entirely with
The use ot stean at lGh rre4sltres, nsed III COM
plieatca machinery, morkhg as h!gh sclos1tIes,
AMI requiring nfcc adjustment uuu clo8c Ittcli~
! tIon Of skilled englilc1!Etrcrs.
Tile hydraulic tnrln In It's simplest shape
{whcra 1t Is supplied With water directly fr1tn
| t.,c mn,ns} requires 10 snos:"E saavhnery VI
rcpt lie p!stor.s and shcaygs. Even In It's must
| elaborate lOrnl, Whcru WAter cnnnOt be obtained
| frun t,lr street mains, no marhincry is rcqulrrA
D&llrr than II simple. di1eet.actii!g steas,.t,ump
icasy Ut n1anpuatlon} to raise sltu wnrr Into Il
Junk, thereby producing tlle h0ad necessary to
Tile ,nael,,ne recommended by us, In addition
to a!l t.Ic Rboyc Inns ti,e following nlerits Sufe-
ty.-as there asg no co1s, raGks, aetts, Or Slalts
ltalu to fracture between the applied puwcr and
tile passenger car.
Yho power IL applied hy direct downward
pu1l, in 4 straight ifne, mud alwnys Ia tllt pp-
poAlto direction to tic movement Of the cur, tho
piston thus netting us . partta cnuntcrbaauce.
| Que source ot accidents. which VIC arc told ara
the nlust frequent In elevators with the ustlal
Rtcanl hostlnSalr1llns, aud aEc very dangerous,
caused by obstsucuous which niuy 10 accidental.
ly PLACED 81 rs To Ir.,Iect hpynnd tho ttuors NJ
thctlaursot exit. pcrllapa temporarily 1ol,lnH thu
In whilst iio ehEue continues To Tlilt, iAere'
by ul,wnIng tl,u ropoa Hh.ll they bceoniu slack,
| lcavlut the car entirely wtthuut their supuQrt
then, u course, wl,cn the Temporary obstructotl
| Yiclds, thu cur must fall.
SnelI M accident cannot posaibly occur With
tho llatr r.!aele, as tu pstun III lhe hyt3raule
cylinder IL Il, such cases ltul IN tositoh by tle
st!tl Colnnn 0f water aGoyu und hclnw Il, nttl
consequently tue ropes are kept perlccty t'Ellt
uarc until lie yar IL reisase1 frou. ;ie ubstruc.
ton. No water cnu ESCAPE when the valve Il
set IN hl!uw ln rar tu descend. 81 thu car must
te hrh!, as,,l, when allowed to move, Gull unly
acs.r!'I al fast O. tl'e wAsor eau pass through
lie pipes al.l v4EVes.
il lis "sh,ppcr" or starting rome breaks, Of
t.ccnIncs drtatchcl 81 that The valyus rAnhot Ut
euaeh by tlle operator tn tie car thu plstun tar
ptIy 4esccnd to tlr lower part of the ryInter
s,..sI"g shu cas to tue tan ot ttn stft, wtsese Il
Will be held snley llntl t!.c rope ean bo IT,
ndIllsted Or the valve bc opcned bt l,'lh:
, EUR Tue hanlt stHsutl 1He cur Ca1lAot W any
tucAts bc ra!scd Too high.
. Tllr uropsr speed of ll.u car can bc 40 recu
latetl III II bu entirely beyond Tho coH,ru Ut tts
operator III tin car hy simple adjustment U
tho outlet AInl inlot opnll}nE.
Extraordinary pressure upon tie cy!nllel
causrI t,y l. tou ktl'}tien stup, when tho ear Il
: lleasy iossloI, producing water.rau ia ayuttet
by rnltcf galye belwce,, tlc cylinder and lit
sl!nply p,pe, 50 that tic pressure un tliu rYlt,c
| will nut exc.yd thu head Ut water under WIItcl
1t IL working.
Ly u trruIlar method Of using tie water Il
tho cylinder, II can t,u plncet vertical ami ye
lay.' ,lIc same powcr through lis whuIe leuat
0 No water IL used In thr Hrscent Of the Inad
n BY the adoption ut the loug, upright cyliu1rt
:. tl.c great I'M, worry objectionable u,ultlplEealiu
! Of ailuaye. f. ayalIcd.
II tl,c Hale machine, with an ordinary high
i, of ifs, ls spec'' Of the car Is only twice, or
/. Most thrlec, that ot tut piston, whilst tn ptle
hydraulic usuchttles Proposed 1t Is trptn ten l.
twelve tines, thus largely Increasing tho 10 xe
required to do the work, multiplying tlIu nl.sn
ber U! sscaycs n1'd Increasing tie wear unou III.
ropes to MI eurinOus extent, a.ld lilo dagger
;. thelr tracluru by season OF ulv ireuuenl bend
y EnE Of ttle wtrea.
! 'fIr small sIzs OF tho cylinder that uan bs cn,
It ployed ttur tile Ftlaou gIytp nboyr} REDUCES lh