Dallas herald. [volume] (Dallas, Tex.) 1849-1873, 1867-10-19
Pneumatic RAILWAYS.

Tho scientific mechanical worl,
is somewhat excited, at the preson
time, on tho subject of pneumati,
railways, The successful operation
of at least two short lines for tn,
transmission Of letters IN London
has given an impetus to the spirit o
inquiry and experiment altogether
new in their history, both in Eng
land and our own country.
There is now in course Of con
structon Mt London, n pneumatic
passenger railway of soms mile ant
two, thirds in length, intended e
connect two great railway stations
Tho pneumatic tube will be thirteer
feet in diameter, OF cast iron enclos
cd in q covering of brick The brick
aud mason entrances to this move
and ponderous undertaking are
about completed, and the laying o
the immense tubes wilhbo proceed
cd with rs speedily as may be prac
ticable. This limo will run nearly
It's entire length on the bed of tht
Thames river, and its promised car
ly completion may mark n new and
important era in submarine opera
tions, if it should prove n success
as it is regarded by scientific men in
both England and France, as an in
dex to the practicability Of tubing
the Strait of Dover. That this las
PROTECTIVE Mt no far distant day be
accomplished, may be regarded a'
a fnality, unless the irresistible
march of mind of enterprising mar
is circumscribcd by impassab
bounds before the desired object il
attained. .grE dssE 5.Iii 7oi 1000.
Mr.. Beach, of the Scientific Amer
can, is at the head and front of thu
revival Of tho pneumatic railway
movements in our own country, botl
in reference to passenger ways anc
those for the transmission of parcel,
and letters. He has had construct
cd a model of both classes of thu
ways above mentioned. His mode
for the pneumatic passenger way il
of wood veneering, of a tubular
form, six feet in diameter and ovel
seventy feet in length, with q, ,cal
running through it on four wheels
capable of seating ten or a dozer
persons. This car has ono end fit
ted to the internal surf:tce Of the
tubing, after the manner of a pis
ton, and is propelled by the atmos
phcre being forced into, ahd''ex
hausted from the tubing, sy pow
efful eight bladed fan ofDr. Bcachs
own invention., 10 "oiirsihn9'' 'sl'ss
The pneumatic way in course o
construction at the present time bo
tween Newark and Jersey City, N
j., and described in the following
item which we clip from the New
York .Journalnof Comm eroo, is, from
its description, evidently after Mr.
Beachs plan for pneumatic parce
and letter tubeiways,l and which VIZ
look foraas an entire mechanical
and trust also, a pecuniary success
tube will be three feet in di
ameter, made of white wood veneel
and differs from all otherpneumati'
tunnels in the fact that tho air vii
be isolated from the external atmos
.phegeaand forma continuous circuit
The car for, the transportation Of
mails and lightbaggage, ip1 the case
aofrthis experimental tube, fits close
7ly TO, the sides, and is pushed, along
fby the pressure of air from behind
caused by, the working of a station
ary steam rotary pump orfan wheel
The practical result is the establish
ment of a powerful current Of air
moving in the desired direction. by
which the car will irresistably be
borne along, 1t is claimed that a :
speed of one hundred miles, which
is about the moving rate Of the hnr
ricane, can be obtained through this
tube, There are ingenious contriv
ances for checking the speed and in in
suring safety to the articles in tran
sit, but it is not necessary to describe
them or TO estimate the probable
success Of the invention, for it will
soon have an opportunity ofprovin!g
itself, or making a failure. Should
the small tube work satisfactorily
the company chartered by the State
Of New Jersey will put down 9
larger one suitable for carrying pas
sengers. ..4Gdt. Bulletin. . sb'r' sa.