Brakes: apparatuses used to slow or stop a moving vehicle.
Side-pull brake: breaks with friction pad pulled against the wheel on each side.
Cover: sheath covering the brake cable.
Pivot: axle.
Barrel adjuster: small piece of metal used to regulate the tension of the gear cable.
Locking nut: piece of metal with a hole at its centre, used with a nut, that locks something in place.
Spring: piece of metal that uses the elasticity of certain bodies to transmit motion.
Cable: set of braided steel wires.
Domed nut: piece of metal with a head at one end and a thread at the other, used with a nut to hold something in place.
Yoke: movable part, copyright by bernard dery.
Brake block: movable rubber that can be pressed against the wheel rim to brake a vehicle.
Brake shoe: piece of metal that supports the brake pad.
Base plate: piece that holds the different parts of the brake.
Cable lock nut: piece of metal that holds an object in place.
Centre-pull brake: breaks with friction pad pulled against the tire.

Photo :

EN : Bridge structure
FR : Structure de pont
ES : Estructura del puente


A bridge is a structure built to span a gorge, valley, road, railroad track, river, body of water, or any other physical obstacle. Designs of bridges vary depending on the function of the bridge and the nature of the terrain where the bridge is to be constructed.