New-York tribune. [volume] (New York [N.Y.]) 1866-1924, 1904-05-08

reduction IN power expenses by the use OF the
Standard rlunger Elevator becomes an important
employed for the pumping. the exhaust from the
ing in The Cooler months Of the Year thu5 render
ing the expense Of elevator power merely nominal
In the plunger elevator the car is operated from
beneath by q moving column or plUpger, OF steel,
finished and polished 70 uniform diameter and OF
length little greater than the travel OF the car.
By hydraulic power: that is Il Is sTstained and
moved by Water serTSndin and aGnigeg With
greater than that OF the plunger itself There IS
merely nominal owing the fact that the cylinder
and plunger are of great strength The cylinder
inclosing the plunger Is absolutely tight, being
closed at the bottom by Welded end and eaTTy
packing through which the smooth plunger passes.
being surrounded by water at ell times
INSTALLATION OF 4 PLUNGER
The installation Of plunger elevator IS most
interesting. and a brief description OF tho work
Will prove Of value TO the layrnan as well as the
engineer. The first step IS the sinking into the
soil OF steel casing. or small steel caisson, which
Is OF slightly larger diameter than the cylinder.
70 provide space for the reception OF the cylinder
itself This caisson is sunk until solid rock IS
oountered. and from this point downward the rock
ing, It IS unnecessary in solid rock. In the work
OF sinking the cylinder there Is absolutely no inter
ference with the foundations OF the building.
When the hole prepared for this cylinder is
The cylinder is adjusted the punger IS placed with
in the cylinder. and the platform OF the car IS at
joint on the plunger Itself which IS also firmly
or Cable IS also ndepeHdehty oonnse sd to the
platform from the lower end OF the .punEer. II
this apparatus is at the packing in the stuffng box
above this level The operation Of the elevator Is
entering II az the stunF bex and mo pas s aroand
the plunge, through The ANGULAR sIace betWsee2 II
plunger and the car and sustain u solidy at all
points. When the now OF water is stepped, the
car remains stationary. ana when the water is
allowed 10 escape from the cylinder the car de
fall. the water cannot escape through the
box with velocity suflcIent TO permit Of dan
gerous descent. II the cylinder should burst the
for tie water TO escape through the apparatus he
tween the casing and the cylinder which IS closed
a result
II the pipes supplying the water or the con-
be STOPPED in perfectly normal manner at the
valve directly at the cylinder. In fact there Is
the STANDARD piunre- elevator The man In the
operates the. elevator through the controlling
FOR or esve It for descent t or c e II fSr
q stop This valve is certain in fits operation and
% produce sTnoothness and freedom from vibration
OF bounding. at all speeds and at every change Of
METHOD OF CoUNTERBALANCING.
There is no loss OF power resulting from diminu-
ton OF water pressure the elevator aseends, or
from the weight OF the plunger itself BY 4 care
fui method OF .counterbalancing. accomplished by
the water within the elevator cylinder loss Of
power IS done away with. while ia addition L
counterbalancing effect IS secured in the ordinary
manner by a counterbalance weight. which is
tached 70 the car by cables the combined weight
OF which per g. exactly equal TO one half the
loss OF buoyancy In the plunger as IL ascendS The
counter'balancing arrangement equalZes the lift
times IN a manner most simple and efficient. The
cables employed ave OF great strength. but they
plungsr elevators In operation to-day it has never
been found necessary TO them.
nearly three hundred feet as the Standard Plurger
10 5nstn SS3Psny Is now doing II Is Impossible
"a sections OF steel tubing. each section about
that secures an absolutely uniform column. with
us strength IN no way impaired at the point OF
pany has devised a special Joint more than equal
TO the strength Of the steel tubing composing the
Ing or buclding In the actual use Of the com
on9 elevators there has never been known
any detection Of bending buckling or deviation
This shows that the material OF the plunser Is
subject 20 strain only 10 the amount OF a Slight
eced at its centre from e e~ Verea 10 an aye e
sufficient 70 cause Il 20 touch the side OF an ord
destructive stress.
EASY TO REPAIR
All working parts OF the apparatus connected
with the elevator directly accessible; should II
be desired TO renew cylinder-which has never
happened In the history Of plunser eleyators-sucb
cylinder could be easily removed from its casing
and new one substituted the cylinder Is AZ
the bottom OF an open elevator well with an
necessary and convenient room above II for
over he Cd s t 2, SSSgTse: is great ADVANTAGE
=, No, S.iis into The ea,ding IN such to in
Inc maximum OF economy or operation must re-
SUIT from the use Of the plunger elevator a. II "a
purposes There Is no loss from friction Of
S~o'eHs worm gears and ths multiplicity OF devices