| 摘要 |
An apparatus for lining chimney pipes and the like with cementitious material, and particularly to the improvement in pipe lining apparatus including a conically shaped leading nose providing control switches activated by a nose cap freely positioned thereover, and a gradually rearwardly tapered hollow sectional trailing spreader body adjusted to be circumferentially enlarged by additional expansion panels connected between the separable sections of the spreader body, and a vibrator within the body to exert vibrative force on the body sections to set the cementitious material deposited externally of the apparatus between it and the chimney pipe to be lined thereby.
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