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US1781211A
|
|
Skip-bucket discharge mechanism
|
|
US1740743A
|
|
Automatic tram-car loading gate
|
|
US1703071A
|
|
Material-handling system
|
|
US1649279A
|
|
Cable-winding mechanism
|
|
US1680242A
|
|
Material storage and handling system
|
|
US1707197A
|
|
Hoisting apparatus
|
|
US1632755A
|
|
Means for fastening hoisting rope to skip buckets and counterweights
|
|
US1594863A
|
|
Tram-car equipment
|
|
US1573778A
|
|
Tailblock equipment
|
|
US1570303A
|
|
Skip-bucket car-loading apparatus
|
|
US1557965A
|
|
Two-way tramcar skip-hoist apparatus
|
|
US1622566A
|
|
Material storage and handling system
|
|
US1622565A
|
|
Flow-facilitating means for gravity hoppers
|
|
US1609271A
|
|
Material-handling apparatus and system
|
|
US1628314A
|
|
Skip-hoist system
|
|
US1595539A
|
|
Material-handling apparatus
|
|
US1698680A
|
|
Material-handling apparatus
|
|
US1547290A
|
|
Storage plant for coal and the like
|
|
US1543433A
|
|
System for handling coal, ashes, and the like
|
|
US1703035A
|
|
Coal and ashes handling system
|
