baber/WOPTO huggingface dataset:
Patent DE-2213455-A1 (DE)
Title: Optical resolution of racemic alanine - via racemic alanine maleate
Inventor: ASAI SOICHIRO
Filed: 1972-03-20
Abstract: Process for the optical resolution of DL-alanine, wherein DL-alanine is reacted with an equimolar amt. of maleic acid and the resulting DL-alanine maleate subjected to crystallization, wherein a suitable amount of the optically active crystals are added as seed to precipitate the objective crystals of high optical purity. DL-Alanine (62.4 g) and maleic acid (81.1 g) are dissolved in water (70 ml). While the soln. is kept at 49 degrees C, L-alanine maleate (10 g) having a crystal size of not less than 24 mesh is added, and the mixture cooled at a rate of 1 degree C/10 mins. After 20 mins., finely powdered D-alanine maleate (2 g) is added and the mixture further cooled to 30 degrees C. After 1 hr., the crystals are collected and passed through a 48-mesh sieve to give L-alanine maleate (32.3 g., 81.8% purity) and D-alanine maleate (20.6 g, 76.7% purity).
Patent DE-2232774-A1 (DE)
Title: Extruding plastics tube - with premixing chamber preventing segregation of flow entering nozzle
IPC: B29C48/10
Filed: 1972-07-04
Abstract: Method of making extruded thermoplastics tube, e.g. polyethylene, or polypropylene, is as follows; the platics is introduced as a central, radially inward flow into an annular pre-chamber then through an annular, widening aperture into a second, annular compensating chamber, through which it travels to reach the annular extrusion nozzle. The annular gap between pre-chamber and compensating chamber may be either continuous or formed as a series of perforations or slots; these may be incorporated in a replaceable ring.
Patent DE-2313311-A1 (DE)
Title: Cylinder treatment - esp the cleaning and smoothing of the interiors of cylindrical castings without requiring additional manual work
Inventor: SHIBATA TATSUO
IPC: B22C23/02
Filed: 1973-03-17
Abstract: Hollow cylinder interiors, particularly of castings, are cleaned and smoothed by an appts. comprising a cleaner suspended from a running chain via roller at the upper end of a cylindrical housing, by means of a lifting and lowering device. A shaft protrudes below from the cylindrical housing and is rotated by an electric motor, the shaft having a disc with drooping wire brushes capable of rotation about their longitudinal axis. The lower ends of the wire brushes are associated with a weighted disc which continually exerts a downward pull on them.
Patent DE-2334980-A1 (DE)
Title: Amino anthraquinones contg. up to two amino gps. - by reducing nitroanthraquinones contg. up to two nitro gas in tetraline
Inventor: THIEM KARL-WERNER DR
IPC: C07C225/34
Filed: 1973-07-10
Abstract: The reaction is effected at >150 degrees C, esp. >190 degrees C, for 10 hrs, depending on the temp. The reaction time may be reduced to 5-8 hrs at >190 degrees C by passing NH, under normal press. through the reaction mix. Suitable starting matls are 1-nitro-anthraquinone, 1:5-dinitroanthraquinone, etc. high yields of amino anthraquinones being obtd.
Patent DE-2343600-A1 (DE)
Title: Microphotosetting camera for integrated circuit stencils - has two spaced raster stages and superimposing projection system
Inventor: MICHAILOWITSCH GLASKOW ILJA
IPC: G03F7/20
Filed: 1973-08-29
Abstract: The two spaced raster stages are positioned on either side of an objective which projects the image of one into the image of the second. The main projecting objective reproduces the superimposed images on the photographic plate. The raster stages are movable along two co-ordinates at right angles to the optical axis by a programmed controlled motor. The rasters form a pattern of numerous translucent polygonal areas. For standard patterns, one stage carries a set of normal topological shapes and the other a rectilinear window. For curved or angled lines the patterns consist of light transmitting circular areas. These are partly superimposed so that a curved line formed by two circle segments is projected. The system is claimed to improve versatility and to allow faster composition of complex large circuits.
Patent DE-2344737-A1 (DE)
Title: Molybdenum sulphide - contg. glass-fibre reinforced aromatic carbonate - for injection moulded precision parts, esp. lens mountings
Inventor: MERTEN JOSEF DR
IPC: C08K3/30
Filed: 1973-09-05
Abstract: Glass fibre-reinforced, high mol. wt. aromatic polycarbonates, contng. by wt. w.r.t. total wt., 5-50 (10-40)% glass fibres and 1-10 (1.5-5)% MoS2, are used for mfr. of injection-moulded precision parts, esp. lens mounting. The polycarbonates are also used in electronics, electrical and precision engineering, film- and photographic industry, machine- and apparatus construction, office machinery. MoS2 addn. improves accuracy in size, true measurements within narrow manufacturing tolerance ranges and demoulding.
Patent DE-2353583-A1 (DE)
Title: Cathode assembly - for diaphragm-type electrolytic cell with vertical electrodes
Inventor: GIACOPELLI UMBERTO DR
IPC: C25B11/02
Filed: 1973-10-25
Abstract: Cathode assembly for a diaphragm type electrolytic cell with vertical electrodes in which there are metallic perforated pockets (5), in principle vertical and mutually parallel, connected by at least one transverse current collector wall (7). Each of the pockets is reinforced internally by a central piece of conductive sheet material (10) fixed to the above collector wall. At least a part of that internal reinforcement (10) has a reducing, tapered effective cross section as it goes away from the collector wall (7) as shown. The plate (10) may have a series of vertical slots which gradually lengthen as they are further from the above wall, or may have a single tapered cut-out as shown with its point nearest to the above wall. Electrolysis of alkali metal halide brines. Increase in weight of the cathodes due to the reinforcing plates is minimized; free circulation of the electrolyte in the cathode zones and free release of gas at the cathode are relatively unimpeded. More uniform current density.
Patent DE-2358336-A1 (DE)
Title: Travelling crane supporting girder - has grooves in corner sections accommodating edges of web plates
Inventor: AUER OTTO
IPC: B66C6/00
Filed: 1973-11-23
Abstract: The girder is of triangular section, the corners being in the form of extruded aluminium profile sections, joined together by web plates and welded. Recesses are provided in the aluminium sections into which the plate edges fit. The girder can alternatively be of square section, and the aluminium sections outside the main supporting plane can be of the same shape.
Patent DE-2362481-A1 (DE)
Title: Yarn winding machine adjustable brake devices - with two sets of yarn brake discs one of which is selectively operable
Inventor: KOSLOWSKI GERHARD
IPC: D02H13/00
Filed: 1973-12-15
Abstract: Yarn brake device includes a pair of brakes each formed by a pair of brake discs of which the first pair is constantly in operation and the second pair is brought selectively into operation. The device is used in yarn rewinding machines. Breakdown of machines brought about by fluctuating or transiet surges in yarn tension is prevented.
Patent DE-2363037-A1 (DE)
Title: Stopping a cold pilger tube mill if mandrel breaks - using moving magnet and coil to generate signal voltage
Inventor: GEORGE HEINZ
IPC: B21B33/00
Filed: 1973-12-19
Abstract: A detector circuit for a cold pilger tube rolling mill in which, when mandrel breakage occurs, the mandrel travels further than usual on the outlet side and operates a relay which stops the mill; the novelty is that the relay is actuated by a circuit contg. a detector coil located over the tube blank, and a magnet is mounted on the end of the mandrel; if the mandrel breaks, the magnet passes through the coil and the voltage induced is used to stop the mill. The magnet may be a permanent magnet or an electromagnet with an alternating- or directional-magnetic field, and, in the case of a directional field, the coil pref. moves to and fro along a path at a prescribed frequency with an amplitude of up to 10cm. A rapid and reliable device. The magnetic field from, e.g. a permanent magnet is not entirely shielded by the tube-blank and can be used for control purposes.
Patent DE-2363668-A1 (DE)
Title: Automatic optical detection and location of airborne helicopters - by sensing periodic blade induced light intensity variations using cell with variable sensitivity
Inventor: WILKE KARL-HEINZ DIPL ING
IPC: G01S3/783
Filed: 1973-12-21
Abstract: The method and device are for automatic detection of helicopters and for determining their directions to enable armoured vehicles to detect helicopters sufficiently quickly in a battle situation over a wide angular range. It can be used by as many vehicles as required without mutual interference and relies on the helicopter requiring line-of-sight to the vehicle. The light from the monitored region is focussed optically onto a light sensitive cell. The periodic intensity modulations caused by the rotating blades of a helicopter enable its presence to be detected. The ratio of the useful signal to the ambient signal (i.e. the periodic to the steady and statistically varying signals is optimised by filtering and/or manipulation of the special sensitivity of the cell.
Patent DE-2400779-A1 (DE)
Title: Infinitely variable hydraulic torque converter - has automatically adjusting blade angle and curvature of driving and driven blade groups
Inventor: KOETTER WOLFGANG
IPC: F16H41/26
Filed: 1974-01-09
Abstract: The converter is of the type comprising a bladed pump impeller circulating hydraulic fluid which in turn drives a bladed turbine rotor. Each blade is sectionalised chain-fashion, the links being interconnected such tha rotation of one link is transmitted to all the links of that blade, thus altering its curvature and entry angle. On the pump impeller this blade adjustment is effected by a torque-sensitive centrifugal mechanism, whilst the blades on the turbine adjust due to the impulse of the fluid impinging upon them and thus automatically adjust to the most favorable entry angle. The blade assemblies are arranged in three radially superimposed tiers whose relative adjustments are linked by gearing.
Patent DE-2405747-A1 (DE)
Title: Elevating roof for sliding roof vehicles - has roof luggage rack with cover to pivot over roof opening
Inventor: OSTERMEIER REINHARD
IPC: B60P3/32
Filed: 1974-02-07
Abstract: A roof rack is fitted to the vehicle roof forward of the sliding roof and secured to the rain gulleys in the usual way. A box like cover which can also serve as protection for the luggage carried on the roof rack and lockable to the roof rack frame as an anti theft device is pivotable by a parallelogram linkage to the roof rack and moved into a second position over the opening in the roof when the sliding section has been moved. A flexible edge strip normally fixed to the underside of the cover, is released and used to close the gap between vehicle roof and cover. A second roof rack fitted to the rear of the roof opening may be used as an added support to the cover when in the elevated position.
Patent DE-2410389-A1 (DE)
Title: Cable ducting with pocket mounted on wall - has closure plate with hooked edges pivoting over the lateral opening
Inventor: NEUMANN GERHARD
IPC: H02G3/04
Filed: 1974-03-05
Abstract: The cable ducting consists of a pocket component attached to a wall or another supporting structure and a closure plate. The pocket is U-shaped with its left arm extended and folded over to leave an entrance for the cables. The cables are laid through this opening and rest on the bottom of the pocket. The closure plate consists of an angled plate with hooked edges that locate over counter hooks along the edges of the opening. The lower hooked edges are spiral-shaped so that the cover plate can pivot down away from the opening. Cables can enter the pocket through holes set into the top edge of the opening.
Patent DE-2410866-A1 (DE)
Title: Vertical arc welding with consumable electrode wire - using intermittent arc to produce a series of overlapping spot welds
Inventor: CLOOS ERWIN
IPC: B23K9/007
Filed: 1974-03-07
Abstract: Prodn. of vertical welded seams with endless wire electrodes and esp. fillet welds, in which the welding gun is moved either stepwise or continuously along the seam while the arc is operated at a low, partial power or switched intermittently on and off so that a seam is produced consisting of individual overlapping spot welds, and the welding of the next spot only occurs when the molten pool of the preceding spot has cooled sufficiently so that there is no danger of falling drops from the previously molten material. Welding is pref. carried out upwards with an and off times of 0.7-2.5 seconds, the same time intervals pref. being used in both cases, and with the welding gun oscillating transversely with amplitude 40% of the half the seam width and at 2.5-8 Hz. Used for vertical welding, e.g. in shipbuilding. Thin seams can be obtd. without difficulty, e.g. only 3-6mm on plates 10-25mm thick.
Patent DE-2424619-A1 (DE)
Title: X-ray radiation screen with diaphragms - has deep radiation diaphragm on rotary arm and radiation filter frames between
Inventor: MESZAROS SANDOR
IPC: A61B6/06
Filed: 1974-05-21
Abstract: X-ray apparatus radiation screen is coupled to the X-ray generator with controls and has two or more diaphragms arranged in sequence in the radiation sense. Apart from conventional diaphragms (8, 9), the rotary (10) arm mechanicall coupled to these mounts a deep-radiation diaphragm (7). Between the planes containing any two adjacent diaphragms (7, 8; 8, 9) are two movable frames (15) with radiation filters (16). The mechanical coupling for the arm used to control the deep-radiation diaphragm should incorporate a sliding block. The frame holding the filter should move in a straight line and its actuator, forming part of the circuit linking the generator controls to the HT voltage controlled switch, should be positioned by means of contacts which are tripped by means on the frame and are in this same circuit.
Patent DE-2425125-A1 (DE)
Title: Slitter for moving bar - cutter disc travels along elliptical path
Inventor: HOLTHOFF HELMUT
IPC: B23D25/02
Filed: 1974-05-24
Abstract: The material is cut while it runs through a machine by a cutting disc which moves with the material and at the same speed as the material. The material passes through the machine on 'V' rollers. The cutting disc is mounted on a lever which in turn is mounted on the end of a second lever. Both levers are driven round so that the cutting disc moves over a path in the shape of a flat ellipse which is parallel to the material to be cut. The drive rollers for the material are driven from the same motor which rotates the levers. The drive or support rollers for the material have circumferential axial cut-outs to provide clearance for the cutter.
Patent DE-2425325-A1 (DE)
Title: Dynamometer ring using strain gauges - has wire strain gauges in holes in a part on which a head ring is placed
Inventor: BROSA ERICH
IPC: G01L1/22
Filed: 1974-05-24
Abstract: The head ring of the dynamometer presses on an overload protection device, so that a higher pressure range can be used. Several symmetrically arranged holes in the pressure cylinder are provided with strain gauges on their walls. The radius of the hole pitch circle is such that the whole pressure area of the dynamometer is divided in two equal surface areas inside and outside the pitch circle. The wire strain gauges are about tangent to the dynamometer radius. Holes for the strain gauges (13) are interconnected by sloping channels. The strain gauge holes and possibly the central hole are sealed by plugs.
Patent DE-2437988-A1 (DE)
Title: Strap for clamping overlapping tunnel lining members - trough section strap has locating ends for trough-shaped members
Inventor: FELDE HANS WERNER VOM
IPC: E21D11/22
Filed: 1974-08-07
Abstract: The strays for clamping together the overlapping end of trough shaped tunnel lining members (3, 4) is similarly trough shaped in cross section, long enough to fit over the overlap regions, supported by a pair of hooked bolts (11, 23) each end. The ends (A, B) have stiffening flanges at the bolt regions, and one end (A) has a welded-on flap (37) to butt against the end of the upper trough shaped member (3), while the other end (B) has a lug (15) each side to locate against the open end of the lower trough shaped member (2, 4). The welded in flap (37) is positioned on top of an extension of the side (28) of the strap (20) which extends beyond the lug (21) through which the bolt (23) passes, this extension having a sloping lower side.
Patent DE-2446249-A1 (DE)
Title: Tantalum oxide high resistance layer prodn - uses evacuated reaction chamber for reduction of tantalum chloride with hydrogen
Inventor: STOLZ MANFRED
IPC: H01C17/14
Filed: 1974-09-27
Abstract: The resistance layer is intended for considerable miniaturising of thin film circuits and is produced by depositing a tantalum cpd. In an evacuatable reaction chamber tantalum chloride is reduced by hydrogen. On addn. of an oxygen carrier, entrained in the hydrogen, tantalum oxides are deposited on a substrate whose temp. is regulated between 600-900 degrees C, pref. 600-750 degrees C. Typically the total press. of gases in the reaction chamber is 100-400 torr. The resistance layers may be tempered on air over a time period of 6-24 hrs., during which the temp. is maintained between 240-320 degrees C.
Patent DE-2447048-A1 (DE)
Title: Multi purpose optical device - combines telescope and microscope with camera for astronomical down to microscopic distances
Inventor: PAYER THOMAS
IPC: G02B5/04
Filed: 1974-10-02
Abstract: The device comprises a multi-section telescope (a) with lens (a8) and a diaphragm (7, 8), and ocular (9), an auxiliary barrel (b) with lens (14) and diaphragm (20, 21), a second auxiliary barrel (c) with a mounting for a camera lens (26), a table tripod, an angled barrel (22) with a reversing prism (23) and a connection for a camera lens aperture, and a sleeve (18) which fits on the ocular end of one of the auxiliary barrels and is threaded for connection to a standard tripod. In the case of the largest telescope for astronomical or terrestrial observations, the outer tube has an inner diameter of 66mm.
Patent DE-2451490-A1 (DE)
Title: Waterproofing, air permeable protective compsn. - comprising colloidal dispersion of paraffin wax, beeswax, fatty acid in alkali
Inventor: PAN ADAMAND TZU FUNG
IPC: A23B7/16
Filed: 1974-10-30
Abstract: Compsn. comprising a paraffin wax of m. pt. 50-60 degrees C, a 15-18C fatty acid and beeswax dispersed homogeneously in aq. alkaline soln. is prepd. by mixing the components to form a coloidal emulsion. Cellulosic matls. and paper are water proofed by applying the above diluted comps. to form an air permeable coating. The storage life and freshness of fruits, flowers, vegetables and meats is increased by applying the above compsn.
Patent DE-2458341-A1 (DE)
Title: Stop valve upper portion - accommodates spindle sleeve closed at outer end in which thrust rod slides
Inventor: STEINBERG HERBERT
IPC: F16K31/50
Filed: 1974-12-10
Abstract: The sealing body of the valve is thrust from outside against a seat, and the upper portion (4), screwed onto the housing, accommodates a rotary non-rising spindle sleeve (5), closed at the outer end. In this sleeve there slides a thrust rod (6) fixed to the sealing body (7). The rod can be of polygonal section, with a threaded portion at the top screwing into the sleeve, and a holder ring can be fixed in the underside of the upper portion after insertion of the sleeve, the rod passing through this ring. Peripheral grooves can be cut in the outside of the sleeve near the bottom, to accommodate sealing rings (57).
Patent DE-2503227-A1 (DE)
Title: Yoke for electric motor permanent magnets - has windows for magnets and outer flux return sheath holding magnets in place
Inventor: SKRDLANT KAREL
IPC: H02K1/17
Filed: 1975-01-27
Abstract: The yoke, holding permanent magnets of an electric motor, has the permanent magnets (3) located in windows in the yoke (1). the magnetic flux return elements (7) are located on the outside of the yoke and also serve to fix the permanent magnets. The magnets sit in the windows in the yoke between radial, hooked projections (4) that prevent them moving axially. The inner surfaces of the magnets are machined. The magnets are held in the windows by a cast material or by deformations of the yoke. The flux return element consists of a laminated structure composed of wires wound around the outside of the magnets.
Patent DE-2504212-A1 (DE)
Title: Refuse disposal system with collection channels - has pressurised pneumatic ejector system for transferring shredded refuse
Inventor: KRAUS JOHANN
IPC: B65F5/00
Filed: 1975-02-01
Abstract: The arrangement for removal of domestic, trade and industrial refuse which is disposed of through tubular shafts. The refuse disposal system is pressurised and it is constructed from well proved building components. On the bottom of the disposal shaft is arranged a refuse shredder (3), a blocking valve (4)and a pneumatic transporter (5) connected to a collection pipeline (6). The pressurised pipeline can be connected to a vacuum collection pipe of a refuse collector. Alternatively the pressurised pipeline can be used to fill an open refuse collecting hopper.
Patent DE-2504663-A1 (DE)
Title: Flexible endoscope with servomotor - has multi-directional movement of distal end controlled by proximal end head
Inventor: STORZ KARL
IPC: A61M25/01
Filed: 1975-02-05
Abstract: The distal end of the endoscope shaft is moved multi-directionally by tension and/or spring elements in the shaft, with these elements actuated by one or more servomotors (2, 8) in the head-piece on the proximal end. Preferably the servomotors are small electric motors (2, 8) with reduction gears (11-14). The electric motor shafts (9, 10) have worm gears (11, 12) engaging worm wheels (13, 14) onto whose shafts (15, 16) the tension elements (17, 18) can be wound or unwound. Push-buttons can be fitted to the headpiece for forward and backward running of the motors, thus permitting maximum comfort of operation using just finger pressure to control the endoscope.
Patent DE-2517594-A1 (DE)
Title: Program controlled electronic data switching system - has several processing units which are at least partly doubled and functional states are logged
Inventor: GEHRMANN HORST
IPC: H04L12/52
Filed: 1975-04-21
Abstract: One of the processing units operates as a line switching unit, and one as a program control unitsatellite-like connected to a doubled central store, and functional states of system units operating as processing units and storage units are logged in at least one state register. In order to signal failure of the whole system other connected exchanges have a logic circuit (L1, L2) connected to register stages of functional state register (FZR), in which the functional states are stored, which signal the failure of the whole system. Outputs of the logic circuits are connected through further circuits to the system switching circuits (SAA) for outgoing data traffic, so that when the whole system fails, the system switching circuits send out a start polarity.
Patent DE-2520616-A1 (DE)
Title: Folding mechanism for furniture legs - has leg lock mechanism in upright and folded positions
Inventor: KNEILE KARL
IPC: F16B12/52
Filed: 1975-05-09
Abstract: The design is particularly for table legs and has a fixing plate (1) on which the support feet (3) pivot between the upright and folded position. A locking mechanism ensures safe and simple operation with locking of the leg in both positions. The locking mechanism (4) has an adjustable handgrip (20) that can move on the folding axis (2). This is connected to a locking link (35) which has holding eyes (40, 41) at both positions. The hand grip is connected to a hook (22) that fits round a spigot. The locking link (35) the hook, handgrip and spigot fit inside the U-shaped cross section of the support legs (3).