Abstract: New chemical compounds, bis(pyrrol-2-yl)halocarbylmethanes, also known as meso-halocarbyl dipyrromethanes, are made by recting pyrrole in either of two reaction schemes. Once such scheme converts pyrrole through an intermediate, a halocarbyl carbonyl pyrrole, to a 2-(1-hydroxyl-1-hydro-1-halocarbyl)pyrrole!, and then converts the latter to the desired halocarbyldipyrromethane; the last step in this scheme is a novel and useful method in itself. The other such sequence converts pyrrole, by reaction with a halocarbyl aldehyde, directly to the desired halocarbyl dipyrromethane.

Abstract: A method and an arrangement for link allocation which provide selecting a free link for a requested connection from a plurality of available route coordinated links according to a particular resource requirement of the requested connection and depending on the current resource seizure of connections that have already been established on utilized links. The establishment of a requested connection and the connections already established have the same or different resource requirement. The current resource seizure for each link resulting from the established connection or connections is stored in a memory. Each link is sorted in the memory in a link allocated memory site which corresponds to the current resource seizure of the link concerned, or the free resource capacity of the link.

Abstract: A developing procedure and a machine to carry out this procedure, based on a cylindrical tank with a horizontal shaft, which, by means of a motor with a double turning direction, moves an carrier arm that pulls a material holder with the material to be developed. The material holder passes through the bottom or base of the tank, in which the developing liquid is placed, turning alternately in each direction. The developing liquid is extracted and the tank is filled with another liquid, until a specific developing process is completed. The unit is contemplated with a microprocessor control, thus forming a simple, portable machine at a low cost.

Abstract: In a twin-wire former for the production of a paper web, two wire belts (11 and 12) together form a twin-wire zone which is divided into three sections (I, II and III). In the first section (I) the two wires (11, 12) travel over a curved forming shoe (16). They form there a wedge-shaped inlet slot (15) with which a headbox (10) is directly associated. In the second section (II), several resiliently supported strips (27) rest against the lower wire (11) and between each of said strips (27) a rigidly mounted strip (28) rests against the upper wire (12). In the third section (III) both wire belts (11, 12) pass over another curved forming shoe (23).

Abstract: Internal gear pump with an internal gear, a thrust plate arranged on each side of the internal gear, a powered external pinion arranged eccentrically relative to the internal gear and meshing with it, and a sickle-shaped, floating filler part split in peripheral direction and bearing with its blunt end on an axial support pin. The first segment of the filler part that faces the teeth of the pinion has a greater radial thickness than its second segment facing the teeth of the internal gear. The first segment features in the parting interface at least one axially extending groove for accommodation of a sealing element. The first segment features at least one stop for restricting wear on the surface facing the teeth of the pinion.

Abstract: A vessel unheading device and method especially suited to handle shot coke produced in a delayed coker unit of a petroleum refining process. The device includes a car having mounted thereon one or more bottom head retracting support members which can be laterally positioned below the head assembly. The support member includes a vertically retractable member suitable for elevating a bearing plate mounted at an upper end thereof into pivotable load bearing engagement with the head, and a horizontally retractable member having one end attached to the bearing plate and another end attached to the vertically retractable member for applying a pivot force. Shot coke or other debris is captured from the opened vessel by a mobile chute wheeled into position adjacent the unheading car. Following complete retraction, the head is transported to a remote location for maintenance.

Abstract: The invention is directed to a press system of a paper machine for making tissue, including a crepe drying cylinder, a press roll with a smooth surface, an extended-shoe press unit, and a press roll fashioned as a suction roll or grooved roll. A first press gap is formed by the press roll with a smooth surface and the press roll designed as a suction roll or grooved roll. A water collection tub is coordinated with the suction roll or grooved roll. A second gap is formed between the press roll with the smooth surface and the extended-shoe press unit after which the felt leaves the periphery of the press roll with the smooth surface. Following thereafter, a third press gap is provided between the press roll with the smooth surface and the crepe drying cylinder. The felt does not pass through the third press gap.

Abstract: A process for the production of an aluminum hydroxide with rounded grain surfaces. An alkaline solution of a specific composition derived from the Bayer process is inoculated and adsorptively precipitated with an aluminum hydroxide with a specific grain distribution. The aluminum hydroxide obtained according to the new process is especially suitable for the flameproof finishing of polyesters.

Abstract: A machine for making bundles (3) of sheets (2), in particular signatures, wrapped by means of a wrapping machine (15), including: a first pusher (7) which moves said bundles (3) in the direction (A) against a stop (10); means (17, 20) suitable to keep the bundle (3) pushed against the stop (10) when the first pusher (7) moves away from the bundle (3) to return in the rear position; and a second pusher (13) which moves the bundle (3) in the direction (B) perpendicular to the groove (16) in which the wrapper of the wrapping machine (15) arranged side by side with the machine is housed.

Abstract: Method and apparatus for correcting distortion in a CD recording and playback system is disclosed. In an improved CD recording and playback system of the present invention, a complex reference signal having precisely defined amplitude and frequency properties is recorded on an information track of a CD prior to the beginning of the audio track(s). During playback of the CD, the reference signal is read from the CD and compared with a identical copy of the reference signal, which is stored in a memory device within the playback system.

Abstract: The invention relates to an apparatus for cooling plastic profiles, comprising: a trough for receiving a cooling medium through which the profile can be guided; at least one inflow opening for delivering cooling water into said trough; at least one outflow opening for leading cooling water out of said trough; several guiding means arranged in said trough as separating walls which subdivide the trough into several sections in the longitudinal direction of the profile with first openings for calibrating the profile, and with further openings for producing a turbulent flow of the cooling water circulating between said inflow opening and said outflow opening.

Abstract: A device for removing the anus of slaughtered animals. The device includes a cutting device for cutting out the anus of a slaughtered animal, which cutting device comprises a substantially cylindrical blade drivable for rotation and translation and having a leading cutting edge. The device further includes positioning elements for initially positioning the blade such that the center line thereof extends substantially through the anus of the slaughtered animal and a blunt locating pin for causing the blade to follow a curved path such that the cutting edge follows substantially the form of the rectum of the slaughtered animal while avoiding contact with bone.

Abstract: The bit holder (1) is nonpositively connected to a bit bushing (3) with adherence to a pressure per unit of surface area of >100N/mm.sup.2 between the conical outer surface of the bit bushing (3) and the inner wall of the receiving bore (2) of the bit holder (1). After the bushing has been driven into the receiving bore (2), the conical outer surface of the bit bushing (3), formed by rectilinear generatrices, protrudes beyond the bore (2) by an excess amount (a).

Abstract: A spiral resistor being of a type formed on a semiconductor substrate to withstand high voltages, comprises at least one thin field-plate layer covering said substrate between adjacent turns of the resistor. This prevents the well-known phenomenon of the "phantom gate" from occurring which would result in the characteristics of spiral resistors deteriorating over time.

Abstract: A twin-wire former for a paper machine having two endless loop wires, a wire support frame and a head box. The web forming zone leading from the entrance slot, which is at the breast roll in one wire loop and the forming roll in the other wire loop, is inclined at an angle of 30.degree. to 50.degree. to the horizontal. The wire support frame has the shape of an inverted U with a front support arranged upstream of the head box, a rear support arranged downstream of the headbox and an upper beam which connects the upper ends of the front and rear supports to each other. A lower beam is located within the loop of the lower wire and extends to both of the forward and rearward sides of the rear support with one end extending into the U-shaped frame while the other end extends at least approximately up to the remote end of the loop of the lower wire. At least one water removal element of the upper wire is suspended from the upper beam. At least one water removal element of the lower wire rests on the lower beam.

Abstract: Butting assembly and butting method employing the same to butt a single bar (11) or to butt a bundle of bars (11) by butting the single bars (11), the assembly being installed upstream of a processing machine, the bars (11) being fed one by one by hand or automatically to the butting assembly, which comprises a trolley (12) capable of to-and-fro alternating motion and able to move along a guide (13) extending lengthwise along the axis of the bar (11), the trolley (12) including at its upstream end gripper means (15) and at its downstream end abutment plate means (14) on the same axis as the bar (11), the abutment plate means (14) being kept resiliently in an inactive position and cooperating directly with position detection means (16) associated with an assembly (17) that manages and controls the butting assembly (10), the extreme positions of the trolley (12) being defined on the guide (19) by two end-of-travel stops (19), which are an upstream end-of-travel stop (19a) and a downstream end-of-travel stop (19

Abstract: A multi-level layered cellular radio architecture serves mobile subscriber stations moving within the system. Best server selection is performed for the mobile stations by assigning within each cell a preference value to each other one of the cells with which is associated by proximity of service area. The strength of the radio signal received by the mobile from the serving cell as well as the radio channels of associated cells is measured. A decision as to the best serving cell for the mobile station is made based upon both the preference value of the associated cells and the signal strength of their respective radio channels.

Abstract: A device for moving large and heavy apparatuses combining modular rail sections positioned one after the other to form two parallel rails onto which slides a load-carrying plate extending transversely between the rails. The upper surface of the rail section has a central row of upwardly projecting supporting elements positioned at regular intervals along its length. The undersurface of the carrying plate has two opposite edge portions each having two parallel rows of guiding elements projecting down and positioned at regular intervals along its length. When the plate is positioned on top of the rails, the two rows of guiding elements define a guiding channel which may releasably engage the central row of supporting elements projecting up from the corresponding rail. The upper layer of each supporting element and the bottom layer of each guiding element are made of a friction material, either low friction material to facilitate movement therealong or high friction material to enhance friction.

Abstract: An installation is provided for the deflagration of explosives. The installation includes a splinter and explosive-proof tunnel housing having open ends and receiving a deflagration reactor positioned inside the tunnel housing and having an entry passageway and entry zone, a deflagration zone and an exit zone and exit passageway. A conveyor device extends from outside the reactor and into and through and out of the reactor and includes a plurality of carriers movable along the conveyor device for receiving and transporting explosives into and through the entry zone and into the reactor zone for ignition and burning of the explosives in the reactor zone. Each of the carriers includes a device for closing in substantially air-tight manner the entry passage and the exit passage as the carrier moves through the reactor. Devices cooperate with the device for closing the entry passageway and the exit passageway for allowing a controllable residual airflow through the reactor.