Abstract: The equipment system consists essentially of the undercarriage 101 having supporting wheels, the rotary device with dovetailing prongs 102, the sowing machine 103 and the land roller or clod breaker apparatus 104. The system components may be used in various combinations or individually.

Abstract: The invention relates to a closed hollow support which has stiffening sections in its interior. The stiffening sections are connected with the support section and with one another. The support sections, which form the outer surface of the hollow support, are welded together along longitudianl seams and at least one of them has holes which are suitable for guiding a welding tool, a screwdriver or a riveting tool used to connect the stiffening sections.

Abstract: The application relates to an apparatus for discharging hot air generated by an internal combustion engine from the engine compartment of motor vehicles, particularly private motor cars or estate cars, which include front quarter panels extending along the sides of the engine compartment and inner fenders providing front wheel wells. In order to develop an arrangement of this kind so that it will have the simplest possible, weight-saving construction and so that air outlet apertures can be concealed, the present invention discloses that in the region of the engine compartment, air inlets are provided leading into a cavity formed by the arcuate wheel well panel, the front quarter panel, and the wheel well roof panel. Further, this cavity is in communication with air outlets lying in the region of a front vertical door gap and disposed substantially in a transverse plane of the vehicle.

Abstract: The disclosure is directed to an improvement in the gas phase polymerization of propylene using a Ziegler-Natta catalyst in the presence of hydrogen wherein the gaseous propylene is withdrawn from the reactor, cooled and condensed and returned as a liquid to the reactor in order to regulate the polymerization temperature. The amount of the gaseous phase in the condenser-cooler-accumulator system is kept constant by regulating the amount of gaseous phase returned to the reactor.

Abstract: In a self-supporting stirrer for mixing a bed of free-flowing solids, the lower end of the stirring device, facing the bottom of the stirred vessel, passes into a hub. The hub is located on a vertical drive shaft which extends through the bottom of the stirred vessel and consists of shaft sections detachably joined to one another. The drive shaft itself is carried in a cage attached to the bottom of the stirred vessel and can be adjusted vertically by means of a lifting device. This opens or closes an annular gap between a centering cone, provided at the bottom of the stirred vessel, and a conically recessed ring, inserted in the hub. In this way, the need to empty the vessel, for example when carrying out maintenance or repair work, is avoided.

Abstract: A longitudinal bearer support for a forward longitudinal bearer supported under angular bending at the end wall of a self-supporting motor vehicle body, whereby the end wall is locally bulged out in the direction of the vehicle end within the connecting area of each forward longitudinal bearer in such a manner that a form-rigid body results; each forward longitudinal bearer is forked in its approach at the form-rigid body and the resulting arms at least partially surround the form-rigid body; two arms are created by the forking which, extending either parallelly to one another or at an angle to one another, lead to the subfloor.

Abstract: A spiral stirrer unsupported at one end, for mixing and stirring free-flowing solids, especially in continuous gas phase polymerization. The stirrer comprises a plurality of turns formed from hollow profiles. The botton end of the spiral, facing the bottom of the stirred vessel, is attached to a hub seated on a drive shaft. In the vicinity of the transition from the hub to the first turn of the spiral, a distributor spiral is provided to avoid flowless zones in the hub region. Uniform distribution of the gas entering at the bottom of the vessel is also achieved.

Abstract: An improved method of removing heat from polymerization reactions of normally gaseous monomers in the gas phase comprising feeding the monomer in liquid form to a polymerization zone, immediately after entering said zone, removing a portion of said gaseous monomer from the polymerization zone, liquefying said portion of monomer by cooling it at the same pressure as that prevailing in the polymerization zone, recycling the liquefied monomer to the polymerization zone together with fresh monomer in liquid form and causing said liquid monomer to change to the gaseous form immediately after entering said zone. The improvement consists in not only condensing the monomer outside the polymerization zone but also storing the same, in keeping the temperature in the polymerization zone constant by regulating the rate at which liquid monomer is fed to the zone, and in keeping the temperature and pressure in the polymerization zone within limits conducive to the gaseous state of the monomer.