What is "equalizing bar"

Equalize \E"qual*ize\, v. t. [imp. & p. p. Equalized; p. pr. & vb. n. Equalizing.] [Cf. F. ['e]galiser.]

1. To make equal; to cause to correspond, or be like, in amount or degree as compared; as, to equalize accounts, burdens, or taxes.

   One poor moment can suffice To equalize the lofty and the low.
   --Wordsworth.

   No system of instruction will completely equalize natural powers.
   --Whately.

2. To pronounce equal; to compare as equal.

   Which we equalize, and perhaps would willingly prefer to the Iliad.
   --Orrery.

3. To be equal to; equal; to match. [Obs.]

   It could not equalize the hundredth part Of what her eyes have kindled in my heart.
   --Waller.

   Equalizing bar (Railroad Mach.), a lever connecting two axle boxes, or two springs in a car truck or locomotive, to equalize the pressure on the axles.