Assertion: cylindrical bore | /r/HasProperty | engaged by wheel
Facets:
Source sentences:
text: Rotation of the assembly characterized by the excavating head and casing 25 is the function of a motor 33 carried by the frame 27 in driving engagement through a speed reducer 34 with a pinion 35 disposed for rotation about an axis parallel to that of the casing 25 in meshed engagement with a ring gear 36 fixedly and exteriorly embracing said casing between the bearings 29 supporting the same, it being manifest that the drive arrangement shown and described is effective when the motor 33 is actuated to rotate the casing 25 coaxially in and relatively to the frame 27 centered and supported in a cylindrical bore engaged by the wheels 30, and to simultaneously rotate the excavating head, housing 16, and spiral scoop 22 fixedly associated with said casing in an outward extension beyond the associated casing and frame.