Ballast regulator side plow
Ballast shoulder cleaner
Ballast shoulder cleaner
Ballast side plow
Boom and dipper stick construction
Bucket for excavating beneath buried utility lines
Bucket mounted footing tool
Coupling of an excavator shovel
Crowd system for power shovels
Device for plowing ballast
Digger with supporting base pivotable on transversible member
Drain ditch digging attachment for a back-hoe
Earth digging machine for use on soft or undulating terrain, par
Earth moving machine
Excavating buckets
Excavating buckets
Excavating machine with position indication of its work implemen
Excavator
Excavator dipper with lightweight replaceable section
Excavator with articulated arms