|Joseph Bramah's workshop was not in the Vauxhall area but just across the river in Pimlico. We have included this article as Bramah had a big influence on the industries in the Vauxhall Area.|
Bramah turned his attention to lock making, he designed and patented a new type of lock with (reputedly) 500 million possible variations in 1784. To advertise this lock Bramah placed a lock in the window with a sign offering �200 to the first person who could pick it. It was 67 years before it was successfully picked. The picker was a skilled American locksmith and it took him 51 hours of manipulation using a variety of elaborate instruments.
Bramah needed machinery to make components for his business and this lead him to employ Henry Maudslay (see separate entry). Maudslay was a genius at devising and making machinery and this was just what was needed to make the very delicate lock parts. Maudslay was quickly made Bramah's foreman to the benefit of both.
In 1785 Bramah patented a hydrostatic machine which lead him on to develop his hydraulic press (patented 1795) to a viable proposition. The problem with the hydraulic press was that it needed a high pressure waterproof seal between the cylinder and the piston. Bramah tried various techniques to make the seal withstand the high pressure. He packed a coil made from hemp and leather in a recess in the neck of the piston. This was only partially effective and it was Maudslay that invented the self tightening collar - a leather flap that fitted the recess. When pressure entered the cylinder, water got under the flap making it bellow out creating a water tight seal that became stronger as the pressure increased. As the pressure was relived the flap retracted making it easy to move the piston back to the start position. Robert Stephenson used a single hydraulic press to hoist the gigantic (1144 ton) tubes for his Britannia Bridge.
Maudslay left Bramah in 1797 over a dispute about pay and set up his own business. According to one source Bramah later joined or collaborated with Maudslay Sons & Field (Maudslay's Company)
Bramah was a prolific inventor and his inventions include
Towards the end of his life Bramah set up a stone and timber works in Pimlico, using the machines he invented.