|
US1898987A
|
|
Winding machine
|
|
US1844650A
|
|
Mast band
|
|
US1749060A
|
|
Cable-control device
|
|
US1799139A
|
|
Plow for scraper buckets
|
|
US1708912A
|
|
Drag-scraper equipment
|
|
US1708913A
|
|
Skip-hoist structure
|
|
US1707954A
|
|
Skip hoist
|
|
US1809771A
|
|
Outlet apparatus for ash bunkers
|
|
US1674586A
|
|
Release for the automatic brakes of winding drums
|
|
US1676765A
|
|
Mechanism for operating winding-drum friction clutches
|
|
US1721479A
|
|
Drag scraper
|
|
US1707958A
|
|
Skip hoist
|
|
US1666027A
|
|
Automatic fuel-supply means for boilers
|
|
US1633299A
|
|
Skip-hoist and tram-car equipment
|
|
US1740722A
|
|
Storage and reclaiming system
|
|
US1715003A
|
|
Automatic brake
|
|
US1601698A
|
|
Skip hoist
|
|
US1536432A
|
|
Skip-hoist and tram-car operating means
|
|
US1560230A
|
|
Skip-hoist equipment
|
|
US1535664A
|
|
Drag-scraper equipment
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