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US Patent: 590,948
Automatic railroad-switch
Patentee:
Adelbert G. Lawrence - Motley, MN

USPTO Classifications:
246/278, 246/282, 246/353

Tool Categories:
transportation machines : railroads : track and switches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
M. E. Gooley
A. C. Paul

Patent Dates:
Applied: Jan. 04, 1897
Granted: Sep. 28, 1897

Patent Pictures:
USPTO pdf tiff
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Description:
The inventor, Adelbert G. Lawrence (1837-1911), was also granted a band sawmill patent, 619,490. We have not been able to determine if his band sawmill was ever manufactured. This railroad-switch patent improves on the inventor's earlier patents 402,252 and 550,926.

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