1933 – Giant Walking Bridge – M. Clemients (French)

During 1933, engineer's were determining how the Golden Gate Bridge[1] was to be built. Source: Modern Mechanix and Inventions, Dec 1933. One engineer's suggestion for the solution of the problem of sinking caissons[2] is depicted here in this picture of a "walking bridge." Definite placement of caissons has always been an engineering bugaboo when they are …

1916 – “King Grey” the Electric Titan – Fern Pieper (American)

I first saw this mentioned in David M. Earle's interesting book titled "Re-Covering Modernism: Pulps, Paperbacks, and the Prejudice of Form", but John Ptak's recent post reminded me of it. I have used his image of the prototype walking machine. The model of King Grey, the Electric Titan.  Although called "Electric", the motive power is …