| 摘要 |
A drive for a sewer rodding machine is disclosed which includes twist barrier means in the form of a circular arcuate surface, such as the periphery of an idler wheel, around which the rod is looped to prevent the twist of the twisting rod from getting back into the storage reel. The storage reel and torsion-taking wheel are supported for rotation in the rotatable carriage on axes which are generally normal to the axis of rotation of the carriage. In one form, the axis of rotation of the carriage is inclined relative to ground. The periphery of the torsion wheel is flanged to provide a channel, and trained about the wheel in this channel, under the rod, is a drive chain having dogs thereon at spaced intervals for driving the coupled rod. An annular freely rotatable confining band surrounds the periphery of the wheel and confines the rod in the channel against radially outward movement. The confining band is canted slightly, relative to the wheel, to allow for entry and exit of the rod.
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