Discoveries and inventions of the nineteenth century (1905)
Routledge, Robert · London : G. Routledge and Sons · leaf 328
the shortest being \ ft and thelongest 54 ft in length. Each suspension cable is secured by the doublingback of the wires over a kind of stirrup, through which passes a plate ofiron, supported by the two suspension cables, the latter being close toge-ther, and, indeed, only separated by the… … Fig. 147. IRON BRIDGES. 287 To test the stability of the bridge, fifteen heavy pieces of artillery, accom-panied by fifty horses and 300 people, were made to traverse it at variousspeeds, and the results were entirely satisfactory. Indeed, a few years-afterwards the people of Fribourg had another…
Inventions
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