| 摘要 |
An underground pipe installing device comprising a T-shaped frame for positioning in a T-shaped operating trench in the ground, and which is located relative to a target trench in alignment with the intended pipe installation. The frame is suspended in the trench by a plurality of chains, and a hydraulic piston and cylinder assembly is pivotally carried by said frame. A clutch yoke carried on the extended end of the piston is adapted for selective engagement and disengagement with a push rod, employed to form a hole for the pipe. An elongated clutch operating handle and conduits from the cylinder to a hydraulic control valve extend upwardly above the ground level to provide for easy manual control of the device.
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