John A. Roebling's Sons Co. - Specimen Stock Certificate
Inv# SE3340 Specimen Stock
Specimen Stock printed by Franklin Lee Division - American Bank Note Co. John Augustus Roebling (born Johann August Röbling; June 12, 1806 – July 22, 1869) was a German-born American civil engineer. He designed and built wire rope suspension bridges, in particular the Brooklyn Bridge, which has been designated as a National Historic Landmark and a National Historic Civil Engineering Landmark.
Roebling devised "an equilibrium strength approach, in which equilibrium is always satisfied but compatibility of deformations is not enforced." This was essentially an approximation method similar to the force method: First, Roebling computed the dead and live loads, then divided the load between the cables and the stays. Roebling added a large safety factor to the divided loads and then solved for the forces. This approach gave a sufficiently accurate analysis of the structure given the assumption that the structure was sufficiently ductile to handle the resulting deformation (Buonopane, 2006).
Roebling's company John A Roebling's Sons Co. is credited with being the cable contractor for the Golden Gate Bridge in San Francisco, California, constructed from 1933 to 1937. The Golden Gate Bridge was and still is a technical engineering marvel that Roebling, posthumously, has his footprint on. Read more at https://en.wikipedia.org/wiki/John_A._Roebling
Stock and Bond Specimens are made and usually retained by a printer as a record of the contract with a client, generally with manuscript contract notes such as the quantity printed. Specimens are sometimes produced for use by the printing company's sales team as examples of the firm’s products. These are usually marked "Specimen" and have no serial numbers.
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