Abstract: A traveling service unit for an associated textile spinning mill machine may be elevationally adjusted with respect to a reference rail mounted longitudinally along the machine by a feeler guide element pivotably mounted to the service unit in following engagement to the reference guide rail in conjunction with an operatively associated controller connected with vertically adjustable roller support assemblies of the service unit 1 for varying the elevation of the service unit 1 as necessary to compensate for deviations in the pivotal disposition of the feeler guide element with respect to horizontal.

Abstract: In a traveling service unit of the type utilized in conjunction with a textile spinning mill machine, the transverse and longitudinal inclination of the service unit with respect to the machine is monitored and adjusted with respect to a fixed horizontal reference plane by at least two electronic levels or like inclination detectors each operatively connected through an associated controller with a vertically-adjustable roller wheel supporting assembly of the service unit for controlling the elevation of the service unit at each supporting assembly to compensate for detected inclination deviations.

Abstract: An adjusting device for adjusting the position of weights mounted for longitudinal movement within a ski. A drum is rotatably supported within a housing on the ski and has flat belts wound thereon, one belt extending to a weight supported for movement between the binding area on the ski and the tail of the ski and the other belt extending to a weight mounted for movement between the tip of the ski and the binding area. A manually engageable setting member is provided for rotating the drum to control the amount of flat belt wound onto the drum. A hollow member is provided in the ski to simplify the manufacturing process. The hollow member has the flat belts and the weights mounted therein for movement with respect thereto along the longitudinal axis of the ski. Printed indicia can be provided on either the flat belts or on the ski to indicate the relative location of the weights with respect to the tip and the tail of the ski.

Abstract: A container, especially a flat container suitable for confining high internal pressures includes inner membranes secured to lateral side frame members. The inner membranes have inwardly facing convex surfaces and bear against outer walls through hard foam filler material located in the spaces between the inner membranes and the outer walls. The membranes and the walls are manufactured by filament winding techniques.