Assertion: bore | /r/CapableOf | urge loose material
Facets:
Source sentences:
text: Efiicient transfer of excavated material from the floor of the bore and to the interior of the casing 25 through the agency of the scoop 22 is enhanced and facilitated by the provision of an arcuate shield 53 fixed to and transversely of the end of the frame 27 to substantially and conformably close across at least the lower portion of the bore spacedly adjacent the Wall of the scoop 22 remote from the excavating head, whereby advance of the assembly in an excavating direction acts through said shield to push loose material into the path of the rotating scoop and its mouth 24, and by the provision of spiral blades 54 fixed exteriorly of the housing 16 and rotatable therewith in a maximum diameter approximating that of the bore to urge loose material thereby encountered into the path of the scoop intake.