Abstract:
Carry pack made from plastic film that is enclosed on all sides and has a handle for carrying the pack. The handle has two layers, has a folding line at its end facing the top panel of the pack and is sealed to the top panel in the area of this folding line.
Abstract:
Schiff bases of aminocycloalkanecarboxylic acid esters of the formula ##STR1## where R, R.sup.1, R.sup.2, m and n have the meanings given in the description, are prepared by a novel process. The compounds are intermediates for the preparation of the corresponding aminocycloalkanecarboxylic acids and of esters thereof.
Abstract:
An assembly of filament-drawing rollers, used for stretching rovings or fiber bundles in a spinning machine, is divided into a plurality of stages each including an elongate driven roller and a set of coacting counterrollers, the driven rollers being interconnected at both ends by respective gear trains for rotation at predetermined relative speeds by a motor driving one of these gear trains. In order to prevent any overstressing of the mechanism if nonmatching gears are inadvertently inserted into the two gear trains, a torque limiter in the form of a shearing bolt or a friction clutch is interposed between at least one driven roller and an associated driving gear. Advantageously, the torque limiter is provided with a device generating an alarm signal upon relative rotation, due to overload, of its input and output shafts respectively joined to the driving gear and the driven roller.
Abstract:
A yarn feeding funnel for a textile spinning machine having an upper shaft portion and a body portion. A yarn inlet opening in the upper shaft portion is radially offset from the axis of rotation of the yarn feeding funnel and facilitates the formation of a yarn balloon of controlled extent between the yarn inlet opening and a yarn guiding eye which is coaxial with the funnel rotation axis. A plurality of alternative yarn inlet openings, each at a predetermined, different radial spacing from the funnel rotation axis, may be provided to vary the characteristics, such as the diameter, of the yarn balloon formed between the yarn inlet opening and the yarn guiding eye.
Abstract:
The invention relates to the regeneration of solid rail road wheels, the operating safety of which is impaired by the danger of rupture or buckling, by the action of the block brake, especially after the brake has been acting for a long time by influencing the active internal stress state in the wheel rim, in such a fashion that damaging effects are no longer present in the sense of reduced operating safety. This is achieved by heating the wheel center of the solid railroad wheel. The heating process is such that plastic deformation occurs, especially in the area of maximum internal stress and the internal stresses in the solid wheel can thereby be relieved. The temperature difference required for this, between the heated area of the wheel center and the wheel rim is at least 100 deg C.
Abstract:
Bobbins wound with rovings from a preparatory stage are loaded onto a carriage which receives them on an orthogonal array of horizontal pegs and transports them to a holding station for transfer, one column at a time, to a service unit moving continuously or intermittently past a multiplicity of working positions of a ring spinning machine whose spindles draw the roving from bobbins on a supply rack. The service unit, whose primary function may be that of a yarn-tying device or a traveling air blower, has a vertical conveyor with stems alignable with the pegs of the carriage in the holding station for picking up the bobbins to be transferred and delivering them, individually, to storage areas at or near the supply rack where fresh bobbins are needed as determined by a sensor aboard that unit. The storage areas may have overhead grippers onto which a bobbin is pushed from an erected stem at the upper vertex of the vertical conveyor.
Abstract:
The separation of different components of a fluid, e.g. of He, H.sub.2, O.sub.2, or the like from gaseous mixtures, separation of saturated and unsaturated hydrocarbon, water separation from organic mixtures, waste water purification etc., is effected by passing the treated fluid over a row of permeation cells each formed by a container subdivided, by a wall more readily permeable by one component of the fluid, into an inlet chamber and a permeate chamber. The respective chambers are arranged in series directed opposite to each other and the respective products are withdrawn at the respective ends of the series. A part of the product of the permeate chamber series is fed back into the inlet chamber series. Preferably, the delivery of untreated fluid into the inlet chamber series is effected at a point selected such as to obtain the smallest possible difference in the concentration of a respective component in the incoming untreated fluid and in the fluid being circulated through the system. A number of combinations of the basic unit of the method is disclosed. The invention results in reduced energy and permeable area requirements by limiting the volume of recirculated fluid and by strategic location of the inlet for untreated fluid.
Abstract:
A thread breakage repair apparatus for use in open-end spinning machines includes a fixture which holds the thread and trims its broken end and it also includes a movable assembly, on which a drawoff tube is mounted which is connected to a source of suction. This drawoff tube is brought close to the end of the thread held by the clamping and severing fixture, whereupon a controller releases the clamped thread which is then aspirated into the interior of the drawoff tube. The mechanical transport mechanism for the thread may be reversed in motion by the controller, permitting already spun thread to be backspaced so that the end of the thread may be reattached to the fibers located in the spinning rotor. The drawoff tube may also be of the telescoping type whose extension is determined by the controller.