Perth Amboy evening news., 1905-09-12

fore he must remain most OF the
time within the engine, because he
cannot quickly and conveniently
reach his post from any point on the
room floor. The who're en-
must be reached from the water
md through the narrow passages
described. In the case of the snow
engine, the valve gear, trottle, gaug-
es, and all running parts except the
may be conveniently reach
from one end of the engine, and the
engineer can quickly reach his post
from II point where he may nap
en- to be on the engine % floor.
This difference in accessibility is a
very important fact, and in case OF
accident might be serious.
The blue print submitted with the
specifications provides ample space
for an engine of the size, namely,
15x36 feet, but the Allis-Chalmers
engine occupying II feet 6 inches by
43 feet inches would require a
larger engine room and largely in
crease the cost of building and foun-
dation.
The Allis-Chalmers plan shows the
condenser on the suction pipe, N
in that respect does not conform to
the specifications, which require 1t
to be on the delivery pipe.
In view of the foregoing facts,
recommend that the bid of the Allis-
Chalmers Company under Glass b.
be rejected, because; one, the engine
offered is not designed primarily as
o pumping engine in accordance
with the best engineering practice;
two, the design is not in accord with
| Section Al of the specifications;
three, the appearance of the engine
is not in accord with paragraph 40
of the specifications; four, the con-
denser is not placed in accord with
paragraph SO of the specifications:
five, 1t will be to the best interests OF
the city to reject said bid.
The next higher bid, that of the
Snow Steam Pump Works, is formal
and in accordance with the specifica-
lions in all respects. The engine Of
fered is a properly designed pump
ing engine in accordance with the
best engineering practice. AS may
be seen from the blue prints and
photographs, it Is compactly and
strongly built, having a heavy cast
iron frame bolted at n end to the
storm cylinders, and at the other 10
the water end, holding all firmly in
line and space. The fly wheel is
!, properly placed at the center OF the
engine and close to the load. The
, running parts are conveniently ac-
{ cessible for the engineer from a sing
; lie position or from any part OF the
: engine room, and the engine is the
best value for the price bid of any
r of the engines offered in Glass b.
: There is no material difference in
| the price per pound between this en-
, CINE and the Allis-Chalmers engine
: If the contract is awarded for a Glass
9 b. engine, I recommend that it be
q awarded to the Snow Steam Pumf
{ Works.
| Comparative Economy.
I Glass A engine is required to give
! A duty of 100, 900, 900 foot pounds
p and Glass B $4,000 900 foot poundl
Z for each 1000 pounds of steam con
/ sumed. This difference in duty ar
/, fects not merly the amount of fue
consumed, but several other item
of cost, as follows:
o Effect on Coal Burned.
/ Taking the evaporation at
noui,ds of water or steam per poun'
v of cooal, which is a fair average, II
. actual operation the difference II
duty means that Class A engine WI
> use 2,6O4 pounds of coal and Clas
B engine 1929 pounds of coal
raise on million gallons OF waite
Il $50 feet. In other words, wne
Is humping four million gallons dali!
the yearly saving with the highe
duty engine will be 500 times 4 time
sr SIS equals 8 $500 pounds, or "a
l. tons of coal at So per ton equa
et 1880 annual saving.
Or Effect on Cost of Building.
ut Comparing the Snow fly wheel 81
OF CINE of Glass B with the WorthlnI
n ton direct acting engine Of Class.
at engine will need an engine nous
IA only AZ feet by As feet in size, co
s. tanning 1882 square feet floor spa
to accommodate two engines; viii
or Glass B engine will require 53 re
by so feet, or $3.50 square feet
eel floor space. The engine foundatio
he of Glass A engine will each conta
he AZ cubic yards of concrete, while t
st. foundations of Glass B engine W
al contain 1904 cubic yards each. a
he suming the engine house to be blu
cd entirely of concrete up to the grou
lin level, and of good hard burned S
of ected brick above the ground lev
1st with steel trusses and slate roof,
IN estimate that the engine house a
he engine foundations will cost.
er. Glass A $6,S22, and for Glass B 81
In TAT.
.od The increased cost of both engii
hat and building will increase the cost
the interest, depreciation or sink
ing fund, insurance and repairs for Cl
-, u ovar Glass A.