Railroad car truck spring jack

Details Railroad car truck spring jack Railroad car truck spring jack

1996-11-27

1998-08-11

Smith, James G.

Metal working

Means to assemble or disassemble

Spring applier or remover

29225, 29238, 29252, 254 93R, 254 105, B23P 1904

Patent

active

057910332

ABSTRACT:
A railroad car truck frame jack clamps a side frame, the clamps suspend a cross tube which in turn suspends one or more cylinders which raise a bolster plug thereby lifting the bolster relative to the side frame and decompressing the truck springs for repair or replacement, twisting loads being minimized in the preferred embodiment by a lost motion slot.

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