The New York herald., 1875-07-19
KOHLER'S PLAN.


KOHLER'S PLAN.
Mr.. J. William Kohler. civil engineer. has sub
mitted plan worthy OF careful attention, Of which
we give an illustration.
DESCRIPTION.
Ipropose, In the centre ofthe roadway. to erect
at given distances lin general az distances OF MY
feetl on solid blocks of granite inserted In the
ground to q depth SUFFICIENT TO secure perfect
stability three sets OF cast iron columns at suf-
ncent distances from one anot.er 10 permit a
track for horse cars to run between. These col
umns, tested TO more than the necessary crushing
resistance, can be decorated to suit the tasto OF
the city authorities. In the general drawings,
forwarded herewith, have selected an
inexpensive, and, al the same time,
eeSaace to the soSstructon to ocv,ase any oSec.
tions on the ground OF disfEuremens to the
tnorOughfares. ON the inner slue oil the TWO outer
columns, ana firmly bolted TO the centre one, l
propose TO place two cast iron girders TO prevent
outward lateral movement OF the columns, a21
also TO prevent oscillation generally.
propose ON the capitals OF each set OF columns
to pace wrought iron Rirder on tile lattice prin-
down line The dimenslons OF wncs as Of ,Se snp
porting columns, varying with the span las
already stated. The drawings showing girder or
fifty loot openlng). Above the lower 1anRcs OF
these girders, ana firmy bolted to the perpendic-
ular webs. propose to place continuous l. irons
to support small wrought iron girders, upon
which are LAID for each track three Dalks OF Iim-
Der, Two OF which carry the chairs, In which are
locomotive and cars run. / also place a safety
rail- OF wrought iron, OF double Il iorm to act rs
guard ran 10 prevent Tne carrages oy any cnance
this ueslderatum Is to nX beneath each truck
couple OF strong wrought iron crutches, with steel
rollers, whicn. without touching the centre rail,
are bent under the upper nange, leaving three
quarters OF an inch play on the under side and
also on either side OF the rail- IL is obvious II the
cars jump or meet Win an obstacle on the rails
the ends OF the crutches VIII come in contact with
and thus prevent the cars being elevated any
higher on the rails.
On the centre girder ION the upper member) 1
propose placing q rack for insulators, or sucn
height as to carry all The city telegraph lines OF
wires running IN the same direction as the rail-
road.
Tne height OF the line OF rails Is so adapted that
the moor VI the passenger cars Is exactly level
with the top of the two outside girders and
propose placing a continuous platform, extending
the whole length OF the railroad, on either sde OF
the vIaduct, l0r the uD aud down track, four feet
wide, with neat hand rail. so that, IN case OF any
st0ppage, the passengers can walk In perfect
safety 70 the nearest intermediate station.
sengers on the side walk l propose, ior tue ar
rangement oil the Intern edIate Stations TO adopt
the following plan n:-At any point where 1t may
be necessary TO establish a station I throw a
light double wrought IRON lattice grder from the
main main glrder lsupported at It's Junction by Two
nearest house from the sidewalk; staircase
leads up to the second floor, which Is planned out
with ticket Office, ladies' ana general waiting
rooms lavatories, &c. At the END or the gallery
pair OF gates shut of the communication with
the contInu Gus platform. which extends alongside
either track. On the arrival OF the train the
ductor opens these gates, and the passengers en-
Ter into the cars, and the arrivals pass along the
gallery 10 the waiting rooms and the nee 10 the
street below.
propose to adopt locomotive working at high
and low pressure (Allen's patent), which ex-
hausts its steam without noise, 80 not to
Irignten horses or Inconvenience the public. Be-
low the ashbox swinging tray Is fixed to catch
any ashes or sparks winch might otherwise fall on
the horse cars underneath.
The whole irame work. girders and tension rods
under the tracks Is lett open, so that snow may
not accumulate.
HANNAHS' ELEVATED RAILWAY.
Another plan that has some merits has been
submitted by J. M. Hannahs, civil engineer. OF
Chicago. OF which we give an illustration.
DESCRIPTION.
This is designed to be placed double tracs) on
single columns in the middle OF the wide avenues,
or on transverse orders spanning narrow streets
or a single track on each side OF business streets
1t can be curved from one system to the other
with perfect ease.
The leading recommendation OF the Hannahs
plan is not only Its apparent, but Qf OF approved
strength its reality and assurance Of safety
This feature may be described as follows The
longitudinal girders, two TO each track, which are
sixty feet In length and thirty-six inches deep,
rest at either end on the columns, or the tran
verse glrders, as may De. They are formed OF
plate and angie iron, the upper angle and the
stlnening brackets all being their outer SID es,
leaving their inner sides smooth and free from all
obstructioDs. These glrders are connected across
and under the bottom with light iron | beams
Between the girders on these / beams are placed
oak stringers on which are the rails. Thus Is
formed an iron enclosure within which runs the
lower part OF the car. only the light upper part OF
the car being above and in sisht. Hence the
car can never leave the track, and, even with
broken wheel or axle, there would be mo- shock or
danger. The gauge Will be narrow, the bottom of
the running within two or three inches OF tne
The cars Will be little longer and narrower
than horse cars.
There are many important points concerning
this railway which II Will be impossible 10 men,
tlcn here, but which Will undoubt tedly be DULY
considered by the commission Mr.. Hannahs
further claims that no other railway can occupy
less space, nor can be less an obstruction In q
street, nor can equal strength be given by any
otner with the same weight OF iron; and as there
are no extraordinary and costly shapes OF iron in
Its construction that none can be built so quickly
and cheapiy.
Mr. hannahs In his detailed description recou-
mends three lines Of railway all meeting at their
extremlties. The middle route ne proposes to To-
cate IN Elm and Marion streets, tunneing
square and through buildings the other way into
Lafayette place. He estimates the cost in narrow
streets at $3.50, 900.
KITCHEN & HATFIELD'S PLAN.
Mcssrs. Kitchen & Hatfield, civil engineers, have
supplied the following plan to the Commisslon:-
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