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US1673965A
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Apparatus for fabricating structural members
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US1669184A
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Elevator
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US1623084A
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Drilling apparatus
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US1619232A
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Method of fabricating structural members
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US1505304A
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Safety device for high-speed elevators
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US1553497A
|
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Combination draw works and shaft drive for rotary-drilling rigs
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US957536A
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Automobile transfer turn-table.
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US968230A
|
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Automobile-transfer turn-table.
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US920519A
|
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Belt-gearing.
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US916650A
|
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Machine for truing the ends of metallic pipes or other objects.
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US899648A
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Rope-sheave.
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