| http://www.w3.org/ns/prov#value | - 8 are sectional views taken along lines 77 and 88, respectively, of FIG. 5; FIG. 9 is a perspective view, partially bnoken away and in section, of the rotator gear and gear train forming a part of the present invention; FIG. 10 is a top plan view of the articulated beam and mast assemblies constructed in accordance with and embodying the present invention; FIG. 11 is a sectional view taken along
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