James Abercrombie and Harry Cameron in 1922 filed a patent for the hydraulic ram-type blowout preventer. Their invention was a vital technology for ending dangerous oil gushers. 

“The object of our invention is to provide a device designed to be secured to the top of the casing while the drilling is being done and which will be adapted to be closed tightly about the drill stem when necessary,” they noted in their application, which was approved in January 1926. It revolutionized the petroleum industry. Read the rest of this entry »