Abstract: A zoom lens mounting capable of focusing beyond the usual range of object distances towards close ups in a particular region of the zooming range has a control member which changes its position depending upon the relative position of a focusing actuator to a zoom control cam member or vice versa, wherein the aforesaid focusing actuator and the aforesaid cam member are each provided with an area subject to constraint with the aforesaid control member and an area not subject to the constraint.

Abstract: An apparatus for simulating the actual conditions of foam formation during crude oil production includes a transparent cylindrical measuring vessel having a circumferential flange formed at its open top. A ring-shaped member is seated on the flange and defines a chamber in communication with the measuring vessel. The ring-shaped member and the measuring vessel are connected in a gas-tight manner. A supply line for the liquid to be dissolved or distributed in the crude oil sample and a discharge line for the liquid evaporating under measurement conditions open into the chamber. The supply line is connected to a supply reservoir via a metering valve for the liquid. A stop valve is provided in the discharge line.

Abstract: 1.4;3.6-Dianhydrohexitol nitrates substituted by purine bases, namely, adenyl-desoxy-1.4;3.6-dianhydrohexitol nitrates of the general formula Ia as well as theophyllinyl-desoxy-1.4;3.6-dianhydrohexitol nitrates of the general formula Ib, ##STR1## wherein R.sup.1 and R.sup.2 are the same or different and, independently of one another signify(a) a hydrogen atom,(b) a straight-chained or branched alkyl group with 1 to 7 C-atoms,(c) an .omega.-phenylalkyl group, whereby the alkyl group has 1 to 7 C-atoms and whereby the phenyl ring can be halogen-substituted in the p-position, or wherein(d) R.sup.1 signifies one of the residues given under (a) to (c) and R.sup.2 an acyl radical or an aliphatic, possibly methyl-substituted monocarboxylic acid with 2 to 7 C-atoms, or wherein(e) R.sup.1 and R.sup.

Abstract: A fast compact zoom lens comprising a varifocal section followed on its image side by an image forming section, the varifocal section including, from front to rear, a first lens unit of positive power for focusing, a negative second lens unit movable for variation of the magnification, a third lens unit movable along with the second lens unit to compensate for the image shift, and a positive fourth lens unit stationary during zooming.

Abstract: In a multi-story tower for goods display with rectangular platforms and spacer supports extending between successive platforms, the reception sockets for the spacer supports are arranged in the region of the short side of the rectangle of the platform outline and offset away from the corners in the direction towards the middle of the short side of the rectangle, so that the observer looking in the direction of the long side of the rectangle can better recognize and gain access to the goods.

Abstract: An automatic focusing adjustment device in which light is projected to an object to be photographed and its reflection is passed to a sensor having three image receiving areas, whereby a signal from the central area is computed with each of signals from the flanked areas to form focusing adjustment.

Abstract: The invention provides a novel method for preventing deposition of polymer scale on the walls of a polymerization reactor in the course of polymerization of various ethylenically unsaturated monomers such as the suspension polymerization of vinyl chloride in an aqueous medium. The method comprises coating the reactor walls with a coating solution containing (a) a polymeric compound having hydroxyl groups such as a polyvinyl alcohol and (b) a silicic acid compound such as water glass followed by drying of the coated surface and washing thereof with water.

Abstract: A screen sleeve for use in combination with a hardenable mass for securing an anchoring element, inserted into the sleeve, in a receiving material where the sleeve is formed of an axially elongated, woven wire mesh, cylindrically shaped tubular member closed at one end and open at the other. The tubular member has a flange at its open end. Adjacent the flange, one or more outwardly projecting protrusions are formed from the wire mesh defining the tubular member.

Abstract: For the automatic checking of the operational accuracy of inspection machines used in a bottle inspection operation, a star wheel with angularly spaced pockets for the bottles is rotated past testing heads. One or more checking parts are positioned relative to the star wheel to provide an automatic check of the accuracy of the inspection afforded by the testing heads. The checking operation can be effected without interrupting the inspection procedure. The checking can be performed continuously or at specific intervals. Accordingly, a continuous check can be kept on the inspection procedure, in particular without the use of test bottles.

Abstract: The invention provides a method for increasing the color density of a dyed fabric material of, especially, a synthetic fiber as well as the fastness of the color to rubbing and washing. The inventive method comprising (a) pretreating the dyed fabric material with an organopolysiloxane which is an amino-modified organopolysiloxane or a dimethylpolysiloxane, and then (b) exposing the thus pretreated dyed fabric material to low temperature plasma of an inorganic gas under a reduced pressure. The inorganic gas is preferably oxygen or a gaseous mixture containing at least 10% by volume of oxygen. The color-deepening effect is particularly remarkable when the color of the dyed fabric material is black to impart increased graveness and vividness of the color.

Abstract: A forage or picking harvester for the rough grinding of grain has a housing with a cylindrically shaped outer wall. A cutting blade wheel is located within the housing coaxial with the cylindrically shaped wall. The housing has an inlet and an outlet with a discharge duct forming the outlet and extending outwardly from the cylindrically shaped wall. Blades are mounted on the cutting blade wheel and extend radially of the axis of the wheel with the radially outer ends moving along a circle located at the inside surface of the cylindrically shaped wall. A comb-like arrangement of bearing arms is located within the discharge duct adjacent to the opening from the housing so that the blades on the cutting wheel hurl the grains against the bearing arms whereby the arms effect a rough grinding of the grain.

Abstract: A shaft coupling assembly having a first and a second internal fluid chamber system, each containing therein a fluid medium which is placed under pressure when torque is transmitted through the coupling assembly, each of the fluid chamber systems including a plurality of chambers and a plurality of channels which converge from a common point placing the channels in flow communication with each other and which interconnect the plurality of chambers of each of the systems. The channels of the first and the second systems are axially offset relative to each other and each of the systems is designed to create a throttling effect offering resistance to flow of the fluid medium within each of the systems. The coupling assembly enables compensation for axial, radial, angular and/or torsional shaft offset and, additionally, makes it possible to damp the vibrations in an axial, radial, angular and torsional direction and to adjust the stiffness of the coupling assembly.

Abstract: The disclosed AD conversion device has an AD conversion circuit for AD converting information corresponding to object brightness and other photographic information in a double integrating system. The integrating time for AD converting the photographic information not corresponding to the object brightness is shorter than the integrating time for AD converting the information corresponding to the object brightness.

Abstract: A coupling assembly particularly for a trailer hitch or similar device, wherein a coupling hook is to be engaged about a coupling sphere including an annular retainer plate having a radially innermost conical support region and a radially outermost conical guide region formed integrally with each other opening away from said coupling sphere with the support region having an opening angle of about 156.degree. and the conical guide region having an opening angle of less than 120.degree., the support region extending radially through about one-third of the total radial width of the annular retainer plate.

Abstract: The pressure plate for a motor vehicle friction clutch comprises a clutch cover, a non-rotatable but axially displaceable presser plate and a diaphragm spring which is supported in the region of its external circumference on the presser plate and on a smaller diameter on the clutch cover. Securing elements retained on the clutch cover pass through openings of the diaphragm spring and hold the diaphragm spring between the two wire rings, of which the wire ring placed on the side of the presser plate is axially undulated. The regions of the wire ring which form undulation crests in relation to the diaphragm spring extend below the support faces of the securing elements. A projection is formed by bending or as additional part on the wire ring and fixes the wire ring non-rotatably.

Abstract: For leading off the forces acting when tension is exerted on the safety belt and with the pawl (40, 140) engaging in the external teeth (31) of the ratchet wheel (30) in the frame (10) receiving the belt shaft (20), pawl (40, 140) located in the opening (14, 114) following on to the ratchet wheel opening (13, 113) is pivotable at one end about an axis (40a) parallel to the belt shaft and is held with a clearance in the opening is provided at its end (40b) remote from the pawl fulcrum with a force flux transfer surface which is supported on the mating surface of the opening (14, 114) when tensile forces act on the belt and in the engagement position.

Abstract: In a field chopper or chopper forage harvester, a disc wheel chopper is mounted within a housing for rotation about an axis with an elongated discharge tube opening from the radially outer surface of the housing. A crushing device is located within the discharge tube and is positioned to receive the material carried along the circumferentially inner surface of the housing by the disc wheel. The discharge tube forms an air transport duct located radially inwardly of the crushing device relative to the axis of the disc wheel chopper so that air flow generated by the disc wheel bypasses the crushing device and flows through the air transport duct for supporting the flow of material exiting from the crushing device.

Abstract: A hinge attachment arrangement for mounting a door on a motor vehicle includes a pair of hinge wings interconnected by a hinge pin with one hinge wing to be secured to a vehicle door and the other to a fastening element secured to the door frame on the vehicle. The other hinge wing is secured to the fastening element by at least one bolt. The other hinge wing and the fastening element also have at least one continuous borehole for receiving a plug or bolt when the other hinge wing is attached to the fastening element. The borehole and the plug or bolt form guide surfaces which slide one relative to the other so that the guide surfaces afford self-centering and the elimination of play in the assembly of the hinge attachment arrangement.

Abstract: A pair of pipe members are joined together in a flange connection assembly particularly suited for fiber-reinforced plastic components, the pipe members being formed to include an inner pipe jacked consisting essentially of a thermoplastic material and an outer pipe jacket consisting essentially of a fiber winding impregnated with a snythetic resin. A threaded section is formed in each of the outer pipe jackets at the end of each of the pipe members, a flange bushing is provided with a loose flange ring threadedly engaged on each of the threaded sections and a covering collar covering at least the end of each of the pipe members is inserted at the inner pipe jacket.