Pittsburg dispatch. [volume] (Pittsburg [Pa.]) 1880-1923, 1891-06-28
PLEASED AN EXPERT.
Detailed Report Of One Of the Engi-
neers Appointed to Test
THE, GTY'S AMOSKEAG ENGINES
No Doubt In His Mind as to the Means That
We're Employed.
BOTH MACHINES WAY OVER THE MARK

Jacob schinneller, one Of the judges in
last Mondays fire engine test, yesterday
filed his report of the test 1t will be
lodged with the Master, George P. Hamil-
ton. It is as follows,
IN THE COURT oB COMMON PLEAS No.4l
OF ALLEGHENY COUNTY.
h. e. Stafford. mo. 2os, January
wl'sn neoon'n s5sz; ill., llss e as
Personally appeared before me, the under
signed authority, came Jacob Schinneller,
who being duly sworn according to law de-
poses and says;
That he Is a mechanical and hydraulic
engineer and has been such engineer for
more than 20 years, and has practical
knowledge of and experience with machfn-
cry including pumping engines and pumping
machinery for that length Of time.
That deponent was the assistant mechanf-
cal engineer under Joseph Lowrie in the
erection and construction of the engines
connected with the Pittsburg Water Depart
ment, located at Brilliant station, this city.
That in addition to this he built and superin-
tended the building of the water works at
Sharpsburg, Braddock and Wilmerding, and
is now engaged in the construction of a
water works for the borough of Homestead,
has had an extensive knowledge and expert
ence with machinery in general
That on Monday, June q, 1891, at o'clock
P. M, on the Monongahela wharf at the foot
of Wood street, in the city Of Pittsburg, this
deponent, in connection with John Wander
velde and George II. Browne, at the instance
of the defendants in the above mentioned
case and for the defendants in the above
mentioned case, tested two fire engines in
ivx ~ Co.
capacity to see if they complied with the
specifications according to order Of the
Master in the said case dated June Is, 1891.
Capacity of the Two Engines.
Deponent further deposes and says that
said test demonstrated that each and both of
said engines had q capacity ofover /, 100 gal
Ions per m mute, to-wit: That said engine No.
2, now located on smithfield street, in said
CITY had capacity of 1,529.49 gallons per
minute; and that engine No. j, located on
Seventh avenue, in said city, had capacity
the said test at that time made.
Deponent further says that for detailed
were made, the results obtained and the
manner of reaching said results, he submits
to the Master the following:
That he went to said place above desig-
mated at O'Clock P. NJ. on Monday, June o.
1891, and found said engine No. coupled to
q fire plug or hydrant, and substantially In
readiness to start. That said engine No.
was standing upon Wood street, near said
engine No. 2, in condition to be attached to
said fire plug and start in operation when
operation when the test of said engine No.
was completed. That each engine has two
pumps, and that each of the pumps dis
charges twice during each revolution of the
engine; that after No. 2 was started and with |
its pumps in actual operation and discharg-
ing water the revolutions of said engine No |
were taken by deponent and by said |
George II. Browne with q speed indi-
Gator and od9meter, , both @ bsa,1 being I'VE well known
revolutions of a shaft or wheel can be ac- |
curately taken and registered; that the time |
was determined by stop watch held BY the !
the affidavit by him filed; said engine No. /
was tested twice. During the first test of I
that engine the odometer held by George H. |
Browne was not used, for the reason that the |
said George a. Browne failed to hear the |
signal, but the speed indicator held by de- |
ponent was used by deponent during this
engine during this test made average |
speed of 750 revolutions per minute.
Discoveries of the Second Test.
A second test of said engine No. Q was
almost Immediately thereafter made, by
which the odometer held and used by
George II. Browne showed and registered
that the engine made at that time not less
than 737 revolutions per minute; while the
held and used by this deponent
SQOWeQ anu IeRlSIoICu tudt tAo cllSlilo |
ing this test made an average OF 720 revolu-
tions per minute.
Said engine No 8 was then tested or oper-
nted exactly in the same manner as herein
before described i'll relation to said engine
No. q and the odometer held by said George
H. Browne during this test or operation
showed and registered that said engine
made not less than 664 revolutions per minute.
But after said test last mentioned, the said
Engines were taken to their respective
engine houses and both pumps of said engine
No. were taken apart, inspected and care
fully and accurately measured by this de-
ponent and they were found by deponent to
be in good working order, and the dimen-
lions Of the same are as followss
Diameter Of pumps. ......................4H inches
Diameter OF pump rod-. inches
length OF stroke. inches
In order to obtain the capacity of said
pumps, or the amount of water discharged
by them, you would resort to the following
Tho diameter of the pumps AZ, squared
1y. 1854, and that result multiplied by S,which
would equal 134.4016, equals the displace-
nent Of one pump on the downward stroke.
As each engine is provided with, and actu-
lily has in operation, two pumps, this result
344016 times equals 268S032, shows or
EQUALS the displacement OF both pumps ON
he downward stroke
The Displacement Of Each Pump.
From tha nm strokes of each pump the