Spike driving machine including improved rail clamping apparatus
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United States of America Patent
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-
Apr 1, 1986
Grant Date -
N/A
app pub date -
Jun 29, 1984
filing date -
Jun 29, 1984
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A spike-driving machine for use in driving spikes into railroad ties and including a rail clamping apparatus for securing the machine to the rails while spikes are being driven into the rails. The rail clamping apparatus can employ only a single hydraulic cylinder and is constructed so as to firmly grip the rails even if the heads of the rails are substantially worn and also constructed so as to grip a variety of different sizes of rails whether or not those rails are new rails or substantially worn.
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