| 摘要 |
A readily portable device for enabling a vertical columnar structure such as a tree, pole or the like to be climbed without causing damage thereto, this device comprising a pair of rigid, elongate longitudinal members of substantially equal length. These longitudinal members are disposed in a spaced-apart, substantially parallel relationship, with least two step-like members disposed between the longitudinal members, to provide footing to a climber of the vertical structure. A flexible member such as a rope is utilized for tightly encircling the vertical structure, with the flexible member being able to be affixed adjacent the upper end of the device, to form a support therefor. The flexible member is placed in substantial tension at such time as the vertical structure has been encircled and weight is placed on one of the step-like members. The upper end of the device has a structure-contacting portion, with latter portion being brought into a firm, no-slip relationship with the vertical structure at the time of the tensioning of the flexible member, as a consequence of weight being placed upon one of the step-like members.
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