Sanders
Sand is used by trams to stop wheels slipping, or to assist wheel grip in emergency braking situations. Usually sand was stored in bins under the seats in the passenger cabins close to the wheels. Generally in older vehicles the sander was operated by a small pedal in the floor. The pedal operated to open the sanders either mechanically or by air pressure. In more modern vehicles the sanders are operated electrically by pressing a button on the operator's console. Normally the sand is dropped in front of the wheels onto the track, but in some trams in Brisbane, Australia sand could also be dropped behind the wheels, in case the tram was slipping backwards on steep track. In these trams the driver depressed the sand pedal lightly to drop the sand in front of the wheels, but fully depressed the pedal to drop sand behind the tram wheels.
Read more about this topic: Tram Controls
Famous quotes containing the word sanders:
“Still, it will sometimes strike a scientific man that the philosophers have been less intent on finding out what the facts are, than on inquiring what belief is most in harmony with their system.”
—Charles Sanders Peirce (1839–1914)
“The a priori method is distinguished for its comfortable conclusions. It is the nature of the process to adopt whatever belief we are inclined to, and there are certain flatteries to the vanity of man which we all believe by nature, until we are awakened from our pleasing dream by rough facts.”
—Charles Sanders Peirce (1839–1914)
“Consider what effects which might conceivably have practical bearings we conceive the object of our conception to have. Then our conception of these effects is the whole of our conception of the object.”
—Charles Sanders Peirce (1839–1914)