Scientific American
NEW
TEN-WHEELED
There have lately
of
the
Central
PASSENGER
l�ounds to the square
ENGINE.
been built for passenger service
Railroad
of
New
Jersey
powerful and handsome locomotives.
from our illustration
that
No.
twenty-five
It will be seen
(one of
624
the con­
inch.
The
engine
is
SEPTEMBER 6, I902.
of a
de­
noteworthy
due
speed of boring,
partly
center
is
to
the great
height of
the
boiler,
9 feet 5 y� inches above the rail.
indebted for our information to the
whose
We are
American
Loco­
signment) is of the six-coupled, ten-wheeled type, with
motive Company, at whose Brooks Works this hand­
wagon
some engine was constructed.
top, wide-firebox bOiler,
truck tender.
and
a
standard
two­
There are a great many points of ex­
•
cellence in the design of this engine for the service
in which it is to be engaged.
all other methods of shaft sinking.
cidedly handsome and imposing appearal1(�e, which is
A NEW
The peculiarity of its
•
SYSTEM OF
The three most
this invention are
of the men working within the shaft from accident,
and a decided minimizing of
the risks
generally in­
curred in such work.
Our illustration
will supply
a
very comprehensive
Two
shafts each 25 feet 6 inches in diameter are at present
SINKING SHAFTS.
FROM OUR ENGLISH COHIlE8PONDENT.
being bored by this machine at a colliery at Mansfield,
Yorkshire, and a description of the plant being used
forward of the
will
supply
and
very
a n o t h e r for
idea
the fireman in
operation.
firebox,
the
back
feet
bOiler,
is
the
wide
firegrate
in
8
diame­
has
in
its
cast
entire
'Cll'cumference
boiler car�
the
its
frame,
ter,
due
to the fact that
ries
of
circular
steel
the
a
good
A
customary
position at the
of
the
the eomfort and absolute immunity
idea of the general appearance of the appliance.
•
A short while ago we described in the SCIENTIFIC
eontour, with two separate cabs, one for the engineer
characteristics of
an annular tee­
de-
slot.
Fitted in
Signed to bu rn
this
slot
fine
s u i t a b l e
an thracite
coal,
and
great
the
carrying
of
renders
it
place
projecting
ad­
so
that the diam­
to
the
tele­
arms,
scopic
fi r e b ox
vi s a b l e
each
clamps,
the
bulk
are
eter over such
en­
gineer forward
arms
over the barrel
ponds approxi­
of
the
mately
bailer,
where
he
corres­
the
has
with
diameter
an
unobstruct­
of
the
shaft
ed
view.
to
be
sunk_
The
unusual a l' e a
Upon
of
arms
the
fe e t,
is
tained
rying
by
car­
fire-
out
of
Length, 109 inches;
width,
Its dimensions are:
:)1 inches;
depth
at
inches, and at the back, 46 inehes.
with
both
rocking
and
water-tube
the
It is
grates,
and the box is radially stayed to the outer shell.
The barrel of the boiler is 60�:( inches in diameter
at the front and 69:,;'� inches at the throat.
of steel varying from %
ness.
It is built
being
diameter,
13 feet 10Ys
the
length
inches.
The
over
inches in
tube
heating
sheets
surface
in
pre­
two
AMEHTCAN the ingenious freezing process for boring
on each arm.
shafts
the bank and lowered by means of winch and guide
through
sandy
soil.
We
illustrate
herewith
another method applicable to all kinds of
soil
from
This plant is put together complete on
rcpes to the bottom.
It will, therefore, be seen that
sand to rock, which has been devised by the Hardy
the whole of the drilling plant can be lowered at once,
Patent
and raised again after the completion of the boring,
Pick
which has
Company,
already
of
Sheffield,
been submitted to
England,
and
practical tests
thus abolishing the slow and tedious methods of clear­
ing the pit bottom.
with highly satisfactory results.
It is a curious fact that there have been compara­
inch to 11-16 inch in thick­
There are 282 charcoal-iron tubes, 2
outside
drill,
fe r a b I y
ally over the rear pair of drivers.
provided
an
compressed
air
A NEW S"YSTEM OF SINKING SHAFTS.
later-
front, 591h
are
improved form
a b­
the
t h e se
mounted
squ a r e
67.7
box
grate,
In fact, from the time of rapping
to the lowering and starting 'of eight drills in the bot­
tively few developments in the process of shaft sinking,
tom, less than ten minutes have elapsed.
either to minimize the cost of the undertaking or to
ever, is not the only feature in connection with the
expedite its progress.
frame.
Yet the sinking of shafts must
the firebox is 156 square feet and in the tubes 2,031
always necessarily be accompanied by enormous initial
square feet, making a total of 2,187 square feet.
Its
circumference
number of holes may be
is
so
This, how­
indexed
that
any
drilled mathematically cor­
expenditure, such as the installation of surface plant.
rect without the trouble of marking out, an item which
weight on the leading wheels is 41,000 pounds and on
The
adopted,
has
hitherto
the
however, is either by the hammer and pick system, or
ing
loss
by
it may be taken that a, round of 60 holes, 6 feet deep,
driving
wheels
120,000 pounds,
weight of 161,000 pounds.
loaded is 106,000 pounds.
making
a
The
total
The weight of the tender
The cylinders are 19 inches
process
boring
ce rtain
of
Sinking
machines,
almost
universally
and as a matter of fact under
circumstances
even
now
the
latter
process,
can
be
of
been
time.
drilled
diameter by 26 inches stroke and the drivers are 69
altnough slow, cannot be equalled; but where rock or
inches diameter)
inches in diameter.
of
very
serious
Reducing
through
hard
this
moment,
to
actual
limestone
(25
involv­
figures,
feet
6
and the gear raised to the bank in
hard ground is encountered even the machine boring
two hours and a half, a result which we venture to
in length by 2 inches in width, and the least area of
process
think has never before been approached.
the exhaust
operation.
used.
is
The steam ports are 24.2 inches
65 square inches.
Piston
valves
are
(inside)
a
very
expensive
and
protracted
The appliance illustrated herewith is a de­
In combina­
tion with the sinking frame a new form of scaffold
a
cided improvement, in the way of utilizing a mechanical
has been introduced, by means of which bricking, or
of 1Ys inches, and a lead in full
plant for shaft sinking, and in the north of England
tubbing, can be carried on at the same time as the sink­
The working pressure is 210
where it has been employed it promises to supersede
ing'.
They have a greatest travel of 5::.( inches;
steam lap
becomes
gear of 1-32 of an inch.
Cylinders, 19x26 inches_ Drivers, 6g inches. Heating Sorface, 2,187 square feet.
NEW
TEN-WHEELED
PASSENGER
ENGINE
FOR THE CENTRAL
© 1902 SCIENTIFIC AMERICAN, INC.
After a suitable spot has been found for the first
Wejgllt, 16],000 pounds.
RAILROAD OF NEW JERSEY.