Track bushing machine and method

Chain – staple – and horseshoe making – Chain making – Sprocket chain

Patent

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Details

29401F, B21L 2100

Patent

active

041320638

ABSTRACT:
Bushings formed by rubber rings bonded to the steel tubes having octagonal bores are inserted into or removed from two parallel groups of spaced cylindrical bores formed in a track shoe that is clamped in the machine. The machine includes a single hydraulic ram having an octagonal rod secured to its piston, which rod receives predetermined arrangements of bushings and/or spacers thereon that are first pivoted into alignment with the first group of bores to insert new bushings into the bores; and are thereafter pivoted into alignment with the second group of bores to insert another group of new bushings into the second group of bores. The radius and angle of the arc through which the push rod is pivoted is arranged to position corresponding flats of the two groups of octagonal bushings at the same but complementary angles to a reference plane having the axes of the bores lying therein. By placing an elongated spacer on the push rod, old bushings may be pushed out of each group of bores. The machine also includes a swaging tool which is selectively mounted on the rod and rounds out oval or otherwise damaged bores of worn track shoes before new bushings are inserted therein.

REFERENCES:
patent: 1986493 (1935-01-01), Abramson
patent: 2020162 (1935-11-01), Rodgers
patent: 2387551 (1945-10-01), Abramson
patent: 2392251 (1946-01-01), Matthews
patent: 3028724 (1962-04-01), Kaplan
patent: 3075346 (1963-01-01), Quarve

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