Abstract: A tube-driving apparatus has piston and cylinder units supported on an abutment and internally connected to cylinders forming tension members which surround the units. A thrust collar engageable with the tube or pipe to be driven is slidably supported on floor beams and has clamping rings which can be secured or released from grooves on the exterior of the cylinders spaced-apart in the direction of driving.

Abstract: Conveying apparatus which may be embodied as a jib for a cutter-loader machine in tunnelling or mining applications. The apparatus employs a scraper-chain assembly which in known manner is entrained around rotatable members and is circulated within guide channels with side surfaces adjoined by a base or floor surface. An electric drive motor is coupled via reduction-ratio gearing unit to one or other of the rotatable members. The motor and the gearing each have housings joined together end-to-end and the housing of the motor is joined to at least one other body section of the apparatus. The housings and this body section have the same cross-sectional profile defining the aforesaid guide channels.