Railways – Track layers – Tamper
Patent
1976-02-04
1978-01-17
Spar, Robert J.
Railways
Track layers
Tamper
37142A, 172719, E01B 2700
Patent
active
040685942
ABSTRACT:
Tamping tool for tamping railroad ballast comprising shank and detachable foot member. In one form, there is a detachable wedge inserted between the upper portion of the foot member and the shank. In another form, there is an arcuate joint between the foot member and the shank.
REFERENCES:
patent: 163835 (1875-05-01), Wimpee
patent: 3082555 (1963-03-01), Hill
patent: 3465833 (1969-09-01), Lutz
patent: 3469331 (1969-09-01), Wood
patent: 3536147 (1970-10-01), Norton
patent: 3581664 (1971-06-01), Kruse et al.
patent: 3638736 (1972-02-01), Hahn
Rowold Carl
Spar Robert J.
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