Shepherdstown register. [volume] (Shepherdstown, Va. [W. Va.]) 1849-1955, 1869-08-21
For the Register.
The New independent Bridge.

Mr.. EdiloI-ln order that the princi-
niles upon which This bridge depends may
be understood and appreciated by DIS
corning public, the following will serve
as an illustration of principles and proper
tiops claimed by inventor: First. elevate
the fulcrums OF the srlI6cisl lever about
- lee. to the bundled, anc start and pro-
oress the work independent OF The water.
When the end of the bridge is built up
and recessed back far enough 10 receive
The counter bslsnce stone. The bsIsnce
beams are applied on The lower course oil
steamers, and the first and second cour-
ses of sneamers are connected with IRON
rods in each section, To insure sTene'h
enough in the wood work TO hold up The
balance weight, When The balance stone
is anplied and bull, on. and tie easing oil
that end of the bridge begun, or compile
ted, then the progression OF the arIllIcisl
lever can be commenced over the TIyer,
independent OF the water. As the work
men progress the work through the air,
The bridge forms beautiful curve on top
by lis own inverted weight, OF about nine
inches 10 the hundred. which makes
natural instead OF on artltlcisl arch. by
its tremendous pull or draughi. Tins
universal law Of projection, then. on The
indefinite and PHILOSOPHICAL la" OF The
lever, constitutes the universal conductor
upon which a self supporting power and
An independent system OF brdge building
depends. The center Of gravity being re-
tanned on The abuIment no distance what
ever alters The law, or changes tie com
bInaiion of the wooden chain, that IS DIES.
tined TO span the mighty MYERS OF our con
tinen,. The triangular sy stem Of easing
of the bridge. from the front line OF the
abutmenl to about one third the distance
oil wide span. together with the cOncave
wooden pms, are the things that are to
command The patent for seIi supporting
power. and us application to an inJePen-
dent system of practical bridge building.
adapted to all pat, Of our common conn
try. The mode OF easing of tie bridge
at the line o! trans position IN front dnd IN
The rear Of recess, gives the advantage OF
building levers twenty. thirty. and SIN
t. fold OF their hight. when no other
method hitherto discovered. admits OF
buildng.a wooden bridge nl more than
ten dlancters successfully. To Illustrate
the easing of practically; We will suppose
a lever thirty feet high IN vertical depth.
and thirty drameters, making nine hun.
bred feet span; then the ullngu!ar easing
must reach out ,hree hundred feet aud be
made perfectly solid The whole hight OF
the lever nj tho line ol ushspnslton. and
fastened on at the right and left Of tho YER
ticle braces, which are also graduated
from the right and left OF The 'ransposl-
ton line, in sizes for the extra strength
a, the center Of gravity. When bridge
is built entirely ovrr Ihe liver. aud extend
ing on TO the sbutment with recess
equal To The first end OF the bridge. Then
Il e purchase is taken and the last end
borne down by the balance power which
conn Ie,es the curve. and forms the bridge.
We thus form by degrees and powers ap.
piled, not only one of the finest bridges
in the world; but We establish a unlver'
sal. unthought Of, and unconCeIved sys.
TEN Of strength. economy, and beauty.
A. CoTTRELL.