GB190403651A - Improvements in Hydraulic Brakes for Cycles and Motor Vehicles - Google Patents

Abstract

3651. Heath, F. G. Feb. 13. Brakes.-In a hydranlic brake for motor and other cycles, a cylinder B in the handle-bar C communicates, by means of a metal, gutta-percha, or other tubing H, with the bottom of a similar cylinder B' from which the brake blocks are operated. The cylinders and tubing contain water, to which some glycerine &c. has been added. A ring or cup D of india-rubber or other material protrudes from the cupped end of the piston A and receives a metal hemisphere E, which spreads the cup against the cylinder when pressure is exerted on its flat face, and so prevents leakage. If the piston is loose in the handle-bar, a split tube g<1>, with bayonet slots g<2> to take lugs on the cylinder, is provided. A lever f<1>, pivoted in an extension of the tube g', is adapted to be engaged by the bent end of the hand-lever F to force the piston into the cylinder. A bell-crank lever is sometimes used instead of the lever f<1>. In a modification, the inner end f<3>, Fig. 3, of the lever F presses on the piston when its other end is pressed down. The cylinder B<1> is secured to the framing by a clip, Fig. 6, to which it is brazed. A loop L, connected to the piston A' is attached to the yoke M carrying the blocks J. Release springs N are attached to the piston and cylinder. The cylinder B' may be adapted to operate a band brake.