JF Ptak Science Books Quick Post
This is an editor's conception of explaining the operating principle of how the soon-to-be-built Brooklyn Bridge (finished in 1883) would support itself to the readers of the Scientific American in 1878:
These "strands" of cable would be fixed to the superstructure with these devices:
A simple explanation of an enormous undertaking.
And I just need to include this image of the wrapping of Roebling's cables, which was an enormously dangerous job, not helped by the height of the short fence that was supposed to keep these men from falling to their death in the river: