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US2284360A
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Extendible builder's tower
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US2261013A
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Builder's tower
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US2317171A
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Clutch
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US2131479A
|
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Loading hoist
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US2042762A
|
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Pawl release
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US1958780A
|
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Stiff leg connecter
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US1976406A
|
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Safety brake
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US1907480A
|
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Friction clutch mechanism
|
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US1919997A
|
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Safety device for hoisting engines
|
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US2071135A
|
|
Locomotive crane
|
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US1850116A
|
|
Hoisting mechanism
|
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US1891769A
|
|
Hoisting mechanism
|
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US1846429A
|
|
Hoisting mechanism
|
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US1774389A
|
|
Winding engine
|
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US1772182A
|
|
Clutch-actuating mechanism
|
|
US1713864A
|
|
Block for trip lines and the like
|
|
US1695498A
|
|
Winding engine
|
|
US1578709A
|
|
Engine for log yarding, skidding, etc.
|
|
US1582962A
|
|
Trolley carriage
|
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US1578887A
|
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Throttle control for gas engines and the like
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