Tamping tool retainer

Details Tamping tool retainer Tamping tool retainer

1982-12-17

1985-02-26

Reese, Randolph

Railways

Track layers

Tamper

172753, 299 93, 403 16, 403370, 404133, E01B 2716, A01B 3522, A01B 122, E01C 1930

Patent

active

045012008

ABSTRACT:
There is described a vibrating railroad ballast tamping tool head which provides ease of replacement of tamping tools, in the field. The head according to a preferred embodiment has a tamping tool holder mounted centrally on the end of a tool drive shaft, a pair of spaced tamping tool-shank receiving sockets being provided in the holder one on either side of the drive shaft and open to the underside of the holder. A pair of tamping tools each having a lower ballast engaging working face and an upper shank are located by means of tapered bores and key ways within each of the sockets and a tamping tool retaining yoke engages the shanks of both tamping tools underneath the tool holder and locks the tools to the holder by means of a centrally disposed bolt which is received in a blind bolt hole in the holder and draws up to force the tools into the sockets and to lock them therein.

REFERENCES:
patent: 2487696 (1949-11-01), Coffing
patent: 2726871 (1955-12-01), Schnellmann
patent: 3177813 (1965-04-01), Stewart
patent: 3581664 (1971-06-01), Kruse et al.
patent: 3677187 (1972-07-01), Stewart
patent: 3774687 (1973-11-01), Van Der Lely
patent: 4002209 (1977-01-01), Van Der Lely

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