Railway Tread Brake
The brake shoe carries the brake block. The block was originally made of wood but is now usually cast iron. When the brake is applied, the shoe moves and presses the block against the tread of the wheel. As well as providing braking effort this also "scrubs" the wheel and keeps it clean. Tread brakes on passenger trains have now largely been superseded by disc brakes.
Read more about this topic: Brake Shoe
Famous quotes containing the words railway and/or tread:
“Her personality had an architectonic quality; I think of her when I see some of the great London railway termini, especially St. Pancras, with its soot and turrets, and she overshadowed her own daughters, whom she did not understand—my mother, who liked things to be nice; my dotty aunt. But my mother had not the strength to put even some physical distance between them, let alone keep the old monster at emotional arm’s length.”
—Angela Carter (1940–1992)
“Look. And the dancers move
On the departed, snow bushed green, wanton in moon light
As a dust of pigeons. Exulting, the grave hooved
Horses, centaur dead, turn and tread the drenched white
Paddocks in the farms of birds. The dead oak walks for love.”
—Dylan Thomas (1914–1953)