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Scherzer rolling lift bridges.
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Operating rolling lift bridge with the optional motor kit sold separately.
His last engineering work before he died done in 1893 was the design of two of these rolling lift bridges in chicago.
The first scherzer rolling lift bridge was built in 1895 to span the chicago river at van buren street.
The bridge span can be rotated upwards to almost 90 degrees which allows just about any type of traffic to pass under it without ever harming the bridge.
It was patented 1901 by theodor rall.
Scherzer was the inventor of a refinement of the bascule bridge called the scherzer rolling lift bridge.
Yet they are at too low a level to be connected by a direct shaft there would be no clearance for trains.
Scratch build a scherzer rolling lift bridge.
Scherzer rolling lift bridges.
The scherzer rolling lift is a refinement patented in 1893 by the american engineer william donald scherzer.
Our model is based on a bridge built in the early 1900 s and was designed by the scherzer rolling lift bridge co.
More information can be found here.
Scherzer rolling lift span of girder construction fits model railroad situations with no compromising.
The scherzer rolling lift bridge compan is pi handle all work related to the design and construction of movable bridges.
One of the few surviving examples is the broadway bridge 1913 in portland oregon.
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His design pivots the bridge like a rocking horse.
The friction is lowered because it is rolling friction.
Armitage the two pinions that ride the racks at each side of the bridge must turn together.
The bridge has a counterweight and raises with a rolling lift motion that moves the bridge up and out of the.
Unlike a drawbridge it roles up and out of the way.
Scherzer rolling lift bridges.
The bridge was 115ft long and carried street traffic.
The rarer rall type combines rolling lift with longitudinal motion on trunnions when opening.
Can be made operable by ai b.
It has a bridge end and a weight ends and a roller between them when the bridge is opened to let boats through.
Is a rolling lift bridge designed by william scherzer this type of bridge is like a drawbridge.
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Available in single and double track versions.