National Republican., 1876-12-14
THE wATER sBPPLY.

The following extract from the recent report Of
Col. T. Lubey, the water registrar, showing the
mode of pumping the water into the high grounds,
Georgetown, and giving complete description Of
the pump, is OF interest to the public:
The system of water supply in Georgetown diff
distribution and arrangement. All that part of
the city below the level Of 100 feet is supplied d
and all that portion of the city 100 feet ABOVE tide
is supplied from the high service reservoir corner
of High and Road streets, the same being fed
from loinch main from the steam force-pump,
located on Fourth, near High street This bump
is supplied by 12-inch main connected with the
large mains in Bridge street. In January last,
the old pump becoming useless by constant wear,
anew oneof greater power and capacity was SUBJ
stituted. The new pump is one of Knowles pat
ent, with the latest Improvements attached. 1t
capacity, power and durability.
In December break was found in the high SER
vice reservoir, caused by leak from an old stop
cock that was attached to the main-pipe and
which was csrelessly allowed to remain and
covered over by the workmen when the reservoir
was tuilt, and also leak from the forcing main,
which to some extent undermined the bottom Of
the reservoir. The water was shut of by order Of
the engineer in charge of the Washington aQue-
duct and remained OF for aperiod Of nine months,
during which time we were obliged to pump the
water direct into the iron MAINS and to avoid in
convenience to citizens, as we'll as to afford pro-
worked Continuously. except NV when ta t ib became @
necessary to clean the boilers and renew fire.
brick; but during this period at no time was 1t
necessary TO make any repairs to the pump or
machinery attached thereto, as 1t run smoothly
from the first and to the satisfaction of the de-
partment as we'll as to the engineer in charge
During the period above referred to the pump
run ga days, 657s hours, 39 $50 minutes, averag-
ing 81 strokes per minutes, at 27.sl10O gallons to
the stroke thus lifting 26S gallons of water.
and run at an average of 30 strokes per minute
lifting q sl-100 gallons each stroke, andas mat
ter Of record and information, 1 give correct
dagcTiDtiOn n
The dimensions of the engine are Diameter
steam cylinder "a inches, diameter Of plungers Is
which gives pIunger displacement OF Ia. ii Gu,
bic inches or 27s1 gallons. The style of the pump is
direct acting, the steam piston and the water
plungers being rgidly connected in a straight
line, SO that the movement of one part produces a
corresponding motion of the other. The pump is
in every particular selfcontained; the water end
and steam cylinder to which all movable parts
are attached are mounted on q heavy cast-iron
frame or box-bed, and are securely held in posi-
tion by large steel bolts. The plungers are con-
ming from end 70 end and which are secured to
heads.
The forward yoke, directly opposite the steam
cylinder, is also connected with the steam piston
rod, and, on motion being given to this part 1t is
communicated to the plungers, and in the same
straight line. The water valves are of rubber,
and eighty -four in number; they are 81 inches in
diameter BY 4 inch thick; the area Of opening
through each valve seat for the passage Of water
is 5.4 inches; the valves are contained in heavy
plates.
The pump has inch suction and 1oinch de-
livery opening on each side of chest both of which
can be connected up if required. The plunger,
on auxiliary valve, moves in patent gun-metai
casing, being made in two parts, and one end of
easily into the chest and are held in position BY
the steam chest bonnits, which bolt up against
their respective fanges. The object Of this cas-
sticking Of the auxiliary valve and which is ac-
compiished by the varying expansion of the two
metals, VIZ: The valve which is Of iron and the
The weight Of the pumpis 25,OOo pounds. The
pump was tested July q, 1876, q run of twenty
four hours, and under the following conditions
and result: A log was kept by the engineer in
charge noting the pressure in the delivery main
every half hour, and the remaining position Of the
hour. Indicator cards were taken each hour from
both ends Of the cylinder, and the average horse
power figured therefrom; the steam valves were
properly set, and the steam piston found to be
perfectly tight; the exhaust was free, that line
coming very near to the atmospheric line and
the compression or cushion brought up TO nearly
This served TO bring the piston to easy state of
rest, and as It was as easily started in the oppo
site direction fas pump ran smoothly and without
The steam pipe leading to steam cylinder was
not covered, and from which there was a slight
from the log, are as follows: Average steam pres
sure In boiler, by gauge, for the twenty-foHr
hours, 40 pounds; average initial pressure in
age water pressure On delivery main, 525
pounds; total number Of strokes taken by counter
IS, SOC; consumption Of coal in pounds 4i4s5 tenn
perature Of feed water, 75o; amount delivered by
pump in United States gallons, Ilo7 ooi SO:
velocity Of water through delivery pipe 1873 feet
per minute. The average indicated, horse power,
Is "a Y for the tEenty-four hours running. The
theoretical or horse power utilized in delivering
this quantity Of water against a pressure OF 52.5
pounds through the 10-inch main Is 2325, which
shows the engine to have been in perfect condi-
ton, and the friction of the moving parts to have
been reduced to minimum.
Taking the above data, the duty will read as
follows: q, ,Ss0,s20 pounds; raised one foot high
with 100 pounds coal or 80 ol5, ,253 pounds raised
enc foot high with 112 pounds coal
Material for the Divorce Market.
The following marriage licenses have been is
sued: Geo. w. Brown and Mary B. Cuthbert; ].
Z. Forrest, Of OfPbiladelphia, and Mary F. Smith;
Samuel jackson and Joanna Walker; r. E
Washington and Ellen c. Weaver; H. Timber
lake, OF Frederick county, Va, and Lille A. s.
Byrne, Of Loudoun county, Va.
BOYS SUITS AND ovERcoATs.