roved split pipe-hanger, adapted for attaching a pipe when the climbers are to be used on wooden poles. surface, the wheel is cushioned and the usual noise and Mounted on the arm D is a spring-pressed pawl (?, to a wall or other support. The hanger Is of very adapted to engage the teeth of the rack… … CUSHIONED CAB WHEEL, A CONVENIENT TYPE OF PIPE-HANGEB. the pole by throwing his weight upon it. Thus the vibration materially abated. In the accompanying en- two parts, one adapted to fit under the pipe and the climbing proceeds. A patent on this improved pole- graving, one of the figures shows the…
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