Brake cylinder for a hydraulic brake

In a brake cylinder of a hydraulic brake comprising a piston moving within said cylinder, the improvement comprising a solid resilient body between said piston and brake fluid in the cylinder, said resilient body having a face abutting the brake fluid, edges that abut the walls of the cylinder, and yet another face adjacent the face of the piston, there being a free space between the piston and the adjacent face of the resilient body, which space is free of brake fluid and into which the resilient body penetrates upon a pressure rise in the brake cylinder, said brake piston and resilient body being adjustably connected by a connecting member biased toward the brake piston by a spring, said member passing through the piston and being fixed to the resilient body.