Glass plate mono negative

London engineer says his device will save all in sunken submarine . Floating dock to carry a baby vessel . Mr Walter Paddon , an ex chief engineer of the merchant service who lives at Bayswater , London , claims that he can save the lives of every member of the crew in a submarine disaster . He has constructed a model of a submarine in wood . It is two feet long . A baby submarine a quarter of its size is in a floating dock on its deck . Mr Paddon calls his invention Paddon ' s detachable safety chamber . He says it would enable a crew of 100 men to leave a sunken submarine and come to the surface quite dry within 15 minutes . As soon as a submarine was sinking and orders were given that it was unable to rise , the crew would leave the parent ship by an airlock , with doors at each end . As soon as they had all passed into the smaller boat , the door to the airlock would be closed and bolted . Jack screws would then free the baby submarine from the floating dock and it would rise by its own buoyancy , with the crew in it . This method would be more expediant than the Davis apparatus where each man leaves separately . Photo shows , Mr Walter Padden and his model . 20 March 1934