Brake Tests
År: 1913
Forlag: Pensylvania Railroad Company
Sted: Altoona, Penna.
Sider: 401
A Report Of A Series Of Road Tests Of Brakes On Passanger Equipment Cars Made At Absecon, New Jersey, In 1913
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250
483. During the tests the time of each rise of 40 degrees Fahren-
heit as indicated by the thermo-couple, was noted on the dynamometer
record as shown by the upper line marked “Temperature rise” in Fig.
149. The temperature thirty seconds after the maximum temperature
occurred was noted as well as the initial and maximum temperatures
of the brake shoes. The temperature of the wheel was also measured
CONNECTIONS TO
MILLIVOLT METER
Fig. 150.
BRAKE SHOE TEMPERATURE.
Method of applying thermo-couple to brake shoe.
previous to each test by means of a mercury thermometer placed in
contact with the wheel and insulated from the atmosphere.
484. During the second series of tests with the reduced area
plain, solid flanged, slotted flanged and reduced area flanged brake
shoes pyrometer readings were not taken. Only the initial and final
temperatures of the brake shoe were noted.
Sparking.
485. Observations of the sparking at the brake shoe were made
during the first series of tests on plain solid and plain slotted shoes. A