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A brief history of support props

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Wooden prop being used to support drywall ceiling panel Before steel reinforced props were invented, timber props were used in construction.
photograph of William de Vigier, inventor of the steel adjustable prop or acrow prop At the beginning of the twentieth century, William de Vigier, born in Switzerland, invented the first steel adjustable prop after moving to London in 1935.

De Vigier named his invention the acrow prop after his solicitor Mr A. Crow.

2 steel adjustable support props or Acrow props The adjustable acrow prop could be used over and over again in construction, unlike the previous timber props which were cut specifically for the project being undertaken.