Railways – Track layers – Tamper
Patent
1989-05-31
1991-03-05
Peters, Jr., Joseph F.
Railways
Track layers
Tamper
E01B 2700
Patent
active
049969250
ABSTRACT:
There is provided a new and useful tamping tool for a railway ballast tamping machine comprising: a shank comprising a shaft, means for fastening the shaft to a tamping machine, and, integral with the shaft, a foot including a first surface; a deformable stress equalizing pad; and a tamping pad adapted to be removably secured to the foot, the tamping pad having a cavity adapted to receive the foot therein, the cavity having a surface corresponding to the first surface of the foot and having at least one other surface corresponding to a second surface of the foot, the relative dimensions of the foot and the cavity being such that when the foot is inserted into the cavity with the equalizing pad between the first surface and the surface corresponding thereto, the at least one other surface is jammed against the second surface, and the equalizing pad is deformed in compression to a thickness which is less than its original thickness. Components for the tool and a method of joining a tamping pad to a shank are also provided.
REFERENCES:
patent: 3301335 (1967-01-01), Snelling
patent: 4155665 (1979-05-01), Kaarlela
Mojica Virna Lissi
Peters Jr. Joseph F.
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