Fluid pressure braking system for a bicycle

A pressure fluid brake system for a bicycle or a motorcycle, comprising;

• a. an operating lever for a handlebar of said bicycle or motorcycle,
• b. a master cylinder having a piston mounted for movement with and by said operating lever from one end thereof, said master cylinder being longitudinally extended at the other end thereof to a length greater than the pressure stroke of said piston so as to form a reserve chamber in said cylinder, said reserve chamber being at the other end portion of the cylinder,
• c. an adjusting member in said reserve chamber for changing the volume of said reserve chamber, said adjusting member having a portion thereof projected outwardly of said extended portion so as to be operable from the outside of said reserve chamber,
• d. a braking mechanism mounted on a wheel of the bicycle or motorcycle, said braking mechanism having a body with a slave cylinder having a piston mounted for movement co-operable with motion of the piston of said master cylinder,
• e. a pressure fluid supply conduit connecting said master cylinder with said slave piston of the braking mechanism, said conduit opening into said master cylinder at a position intermediate the ends thereof, said conduit and said cylinders being filled with fluid such as oil,
• f. said adjusting member which changes the volume of said reserve chamber being the only means compensating for leakage of fluid and wear of the braking mechanism, and
• g. the piston in the master cylinder and the adjusting member being coaxial with the longitudinal axis of the master cylinder.