Abstract: The invention relates to a vibrating plate for ground compaction, comprising a drive motor, an exciter unit which is driven by the drive motor and by means of which a base plate can be set in vibration, an adjustably mounted hood, which can be adjusted between an operating position at least partially covering the drive motor and a maintenance position at least partially exposing the drive motor, an exhaust air guiding device leading from the drive motor to an exhaust air opening in the hood for the cooling air of the drive motor, the exhaust air guiding device being formed in two parts and comprising an exhaust air adapter on the drive motor side and an exhaust air guide on the hood side, the exhaust air adapter and the exhaust air guide together forming a continuous exhaust air path from the drive motor to the exhaust air opening in the hood when the hood is in the operating position, the exhaust air adapter being attached to the drive motor, and the exhaust air guide being attached to the hood such that it

Abstract: The invention relates to a vibrating plate for ground compaction, comprising a drive motor, an exciter unit which is driven by the drive motor and by means of which a base plate can be set in vibration, an adjustably mounted hood, which can be adjusted between an operating position at least partially covering the drive motor and a maintenance position at least partially exposing the drive motor, an exhaust air guiding device leading from the drive motor to an exhaust air opening in the hood for the cooling air of the drive motor, the exhaust air guiding device being formed in two parts and comprising an exhaust air adapter on the drive motor side and an exhaust air guide on the hood side, the exhaust air adapter and the exhaust air guide together forming a continuous exhaust air path from the drive motor to the exhaust air opening in the hood when the hood is in the operating position, the exhaust air adapter being attached to the drive motor, and the exhaust air guide being attached to the hood such that it

Abstract: The invention concerns a homogenous, in particular multicolored plastic sheet or panel, based on ethylene vinyl acetate copolymer (EVA) as binder with a filler content of 30 to 80 wt. % and a process for producing it. In other embodiments the binder contains, in addition to the 70 to 85 wt. % of EVA, polypropylenes to improve the processability (tendency to adhere), EPDM to improve the flexibility, and polyethylenes to reduce the tendency to soiling. In the process described, several additives, each consisting of a binder containing at least some ethylene vinyl acetate copolymer, up to 80 wt. % of fillers and up to 5 wt. % of pigments, are mixed, plasticized and granulated or comminuted to form granules or chips of assorted colours which are mixed and, possibly after other processing operations, pressed to form the plastic web or plates.

Abstract: A yarn roll carrier tube and method of employing same to effect uniform compression of a yarn roll mounted on said tube is disclosed. The tube includes a central compressible portion, a contoured portion at one end, and an annular opening having a recessed stop portion at the other end. The tubes are sized such that the contoured portion may be inserted into and frictionally retained within the annular opening of a similar tube by a predetermined mount dictated by the position of said stop shoulder by the exertion of a compressive force exerted by one said tube against the other. Yarn rolls mounted on adjacent said tubes are partially compressed by the insertion of one tube into the other into said nested position, said insertion resulting in a preferential compression of the central portions of the yarn rolls. Subsequent compressive forces of a greater magnitude when exerted against the tubes result in axial foreshortening of the tubes and greater compression of the yarn rolls.

Abstract: Filamentary or thread textile material is wound onto lap creels (2), which are capable of being pushed, in a telescoping manner, one into the other to form stacks (3). Each stack (3) is covered with a film tube or hose (6) which is shrunk onto the stack for holding together the individually wound lap creels (2). Immediately prior to a treatment, several stacks (3) are formed into a column, which is compacted by an axially effective compression. The slackened tension of the film tube (6) is then re-established by renewed shrinkage thereof prior to or at the start of the treatment of the textile material. Film material capable of repeated shrinking, especially heat shrinking is used for this purpose.

Abstract: A sleeve type lap creel has two outer sleeve sections (1, 2) and an intermediate sleeve section (3) arranged in axial alignment with one another. The outer sections form substantially hollow cylinders. The intermediate section is formed by carrier ribs (8, 9) extending axially from each outer sleeve section toward the other sleeve section. The carrier ribs are circumferentially spaced so that the ribs of one outer sleeve section fit between the ribs of the other outer sleeve section. Initially, the ribs (8, 9) are fully extended and interconnected, for example axially or in the circumferential direction by frangible bridges (15). By pushing the outer sections toward each other the frangible bridges are broken and the ribs of one section move into the other section and vice versa. The ribs have projections (16) which fit into recesses (17) of the sleeve sections for arresting the ribs in the sleeve sections in a plurality of different positions, whereby the length of the lap creel is changeable.

Abstract: Axially extending ribs (7,8) are evenly distributed around the circular circumference of a lap creel. Upper ribs (7) protrude radially outwardly from the outer surface of a shell (5) of the lap creel in an upper carrying portion (1). Lower ribs (8) protrude radially inwardly from the inner surface of the shell (5) in a lower carrying portion (2). The radius of the upper carrying portion (1) is smaller than the radius of the lower carrying portion (2). Radially outer limiting surfaces (9) of the upper ribs (7) have a smaller radius than the inner radius of the shell (5) in the lower carrying portion (2). The radially inner limiting surfaces (10) of the lower ribs (8) have a radius which is larger than the outer radius of the shell (5) in the upper carrying portion (1). The limiting surfaces (9) of the upper ribs (7) have a larger radius than the radius of the limiting surfaces (10) of the lower ribs (8).

Abstract: A process for the production of decorated molded articles wherein a base article is produced by casting and/or compression molding from a hardenable substance containing a minor amount of a thermosetting synthetic resin and a hardener therefor, and a major amount of at least one inert filler, and, optionally, accelerators, colorants and other auxiliary materials and by providing the article with a surface layer of hardenable lacquer resin.

Abstract: A pulse generator circuit generates pulses or logic signals with variable upper and lower levels. According to a preferred embodiment of this invention there are provided two variable voltage sources representing variable logic state levels. For alternately connecting these voltage sources with the output of the circuit there is provided a diode bridge in the configuration of a Graetz rectifier with two nodes connected to these voltages sources and the other two nodes forming complementary output signals; these latter two nodes are also connected to equal and opposite constant current sources which are reversible in accordance with a control signal. The voltage sources are coupled to the bridge via operational amplifiers configured as voltage followers. In each associated feedback loop of the voltage sources there is a diode substantially identical to those of the bridge which is coupled to a constant current source equal in magnitude to those of the constant current sources connected to the bridge.

Abstract: The invention relates to a lap creel made of rod shaped carrying members (1) which form, together with ring shaped fixing elements (2-6) a circular cage. The carrying members (1) project radially outwardly across a portion of the fixing elements (2-6). A fixing element (2) arranged at one end of the lap creel, has inwardly opening grooves (10), the number of which corresponds to the number of carrying members (1). Through these means the appropriate end of the lap creel receives a free-space inner cross-section which corresponds to the outer cross-section of the opposite end of the lap creel. The outer surfaces (7) of the carrying members (1) form parts of a shell which is shaped so that an imaginary enveloping of the lap creel in the central region has a contraction (8). The lap creel thus receives a bi-conical shape; that is, a shape which occurs if two truncated cones at the smaller of the end face diameters are arranged end to end.

Abstract: A lap creel comprising rod shaped carrier elements is used, for example, in the textile industry for winding up textile threads or yarns. For this purpose the rod shaped carrier elements are held together by holding or fixing elements which together with the carrier elements form a circular cage from which the carrier elements protrude radially beyond the holding elements. A plurality of holding elements may be arranged along the lap creel. The individual rod shaped carrier elements have a tapering shape so that the lap creel itself has a conical shape with a largest diameter end and a smallest diameter end. At the largest diameter end the holding element encircles the carrier elements so that the latter face radially inwardly. At the smallest diameter end, the carrier element surrounds the holding element so that the carrier elements face radially outwardly in the form of ribs.

Abstract: A conical yarn carrier comprises yarn supporting surfaces in the form of longitudinal rods which are held together by securing rings to form a cage having a circular cross section. Radially extending openings and longitudinally extending slots or channels are provided between the rods. These slots or channels extend lengthwise between adjacent yarn carrier rods and approximately from the middle of the yarn carrier axially to its upper edge and overlap with said openings. The yarn carrier further comprises a ring element located on the carrier surface forming rod. The ring element is axially displaceable within certain limits and comprises radially inwardly extending projections guided in the slots or channels.