Martinsburg gazette and public advertiser. [volume] (Martinsburg, Va. [W. Va.]) 1826-1833, 1826-11-30

| cation from tide water TO within &c
miles Of the Snsquehanna. Permit u,
to add, that MIR Chapman is a gen
tleman of handsome talents and at
tainments; interchangeable in the acqul
sition Of useful knowledge. and in it
applications to practical and usefnl pur
poses; and will approve himself an a
| BILE engineer. Such are just the met
our country and the cause of internal
improvement, need. Village Record
Mauch Chunk, Oct. 29th, 1926
"Charies Miner. Esq.
Dear Sir: Since saw you have
been almost constantly engaged in ths
service oflh Lehigh Coal and naviga
ton Company In the fore part Of
the season l ran a course of levels
from this place to the Delaware, and
was several weeks engaged in locating
the improvements which are to form
the slack water navigation Of the LIE
high.-This navigation will consist oil
pools formed in the natural channel oil
the river, where the river bed is near
~ level, by means of dam at the
head of the rapids. The rapid parts
Of the river or falls are TO be overcome
by a short canal, commencing at the
dam at The head Of each fall, and Ter
mlnatiDg in lock at the foot of the fall,
where it opens into the next pool be-
low.
The whole fall from a certain point
on the lock at Mauch Chunk TO a Ger
tain pom, at low water, on the pier of
the chainbridge ovec the Lehigh at
Easton, 364 feet ten inches. to over
come which with slack water napi
CATION, there will be required 81 dams
and So locks Alter that was done.
laid DOT the dams proposed to be cree
ted in the upper section, from Stod
daltsvillc 10 nauch Chunk. The i'm
provement of this section is proposed
to be Effected by u succession OF dams
TO he built in the river, which is well
confined between high hills and little
or no valuable iandto be ovecnowed.
This Improvement, however, is not
proposed to be effected until the other
principal works of the Company are
completed. The whole, amount OF fall
from The foot ofthe great falls at Sted.
dartsville, to the point mentioned on
the lock at the Mauch Chunk, is $685.
feet; requiring SO large dams:
In September l laid our rail road
which ia to extend from Mauch Chunk
to the Goal Mine, a distance of nine
miles, and is to hea single tracked
roll with turn oat places. The top o.
the mine is 936 feet above the river
but the railroad will terminate on the
top ofthc hill above the Village. at ar
elevation of2l5 feet above the river
The rail road is to form neasly an u
inform descent, and to be CONSTRUCTED
IN such manner that coal wagons
may descend by the force of gravity
TIE regulate and controul the descent
of the wagons, new kind of Rrdk,
has been constructed, which is differ
ent and perhaps / may safely say, So
perior to any thing which has been u
fed orthat purpose in the English Oh
other ceilcries. This brake consist.
properly of two Kinds, both founded
npon the same principle. ore is called
an Atm0spher and the other an Hy.
drauhc brake. The former, was pu
INTO operation first; it consists of a hor
izontai cylinder enclosed ateach end
with a. piston working in The inside O.
IT, after The manner of a steam engine
The pistonrod works through ore head
of the cylinder, and in each head OF
end OF the cylinder is valve for the
admission of air, opening inwards
There is also at each end, another valve
TO let the air out, which is regulated
by stop cock. The piston rod i.
worked by crank affixed to one o.
the wagon wheels. air which !.
inside OF the cylinder, resists the mo
lion OF the piston, and forms the check
ing power to the wheels; this check
ing power is made greater or less a,
required by the regulation of the stor
COCK, which admits more or less AR tt
escaps'-A short piece of rail road /.
laid, on which these brakes have beer
successfully tried. The spring Of Tia
atmosphere viii entirely stop the mo
uon OF the wheels when the wager
j. Undcr fuil u,av IooJl III