baber/WOPTO huggingface dataset:
Patent DE-2456844-A1 (DE)
Title: Sound reproduction chamber with loudspeakers located around walls - is used to achieve sound pattern of original recording arrangement using different loudspeaker intensities
Inventor: POENSGEN KARL OTTO
IPC: H04R1/32
Filed: 1974-12-02
Abstract: A three dimensional sound reproduction sytem utilizes a large number of electrostatic loudspeakers located on different sides of an enclosed space in order to provide an exact reproduction of the sound pattern generated when the original recording was made. Typically, loudspeakers (5, 6) may be located in various patterns on the walls. A number of different sound intensity levels may be used between the different loudspeakers. The sound being reproduction may be divided up into several frequency bands which are fed to loudspeakers of appropriate sizes, and the division may be accomplished by means of passive or active filters. The intensities of the signals fed to the various loudspeakers are carefully chosen.
Patent DE-2459944-A1 (DE)
Title: Radially compressed sleeve end - produces location groove for axially securing shaft in bearing
Inventor: MIRBETH HEINZ GEORG ING GRAD
IPC: F16B21/16
Filed: 1974-12-18
Abstract: To secure a shaft (10) in a bearing (11) against axial movement, one end of a cylindrical sleeve (12) is radially compressed. This operation is done by a hammer blow onto a punch (15) with an internal taper (16). The resulting deformation of the sleeve end (13) forces the internal corner the internal corner (14) into the shaft surface. Since the shaft (10) is made from a softer material than the sleeve, a location groove is formed which retains edge (14). By axially tapping one end of shaft (10) it is possible to loosen the location of the sleeve such that it can rotate without being able to slide axially.
Patent DE-2461530-A1 (DE)
Title: Conveyor for long material such as rails - has vertical conveyor with two driven conveyor chains with pick up arms
Inventor: HOLTERMANN JOSEF
IPC: B65G47/84
Filed: 1974-12-27
Abstract: The conveyor system for long material, especially for rails, has a bottom roller track and a top transverse conveyor with a level crossing device arranged between the roller track and transverse conveyor. The level crossing device (3) consists of a vertical conveyor (4) and a reversal conveyor (5). The vertical conveyor (4) has at least two driven conveyor chains (8) with connected pick-up arms (9), and the chains are guided over a top sprocket (6) and a bottom sprocket. The reversal conveyor (5) has a shaft (10) with brackets (12) connected via lever arms (11). This shaft (10) acts simultaneously as a shaft for the driven sprockets (6) of the vertical conveyor (4).
Patent DE-2501942-A1 (DE)
Title: Self-tapping screw for use with plastic materials - needs only one sixth turn to be fully tightened
Inventor: MASSONEY DWIGHT FRANCIS
IPC: F16B15/06
Filed: 1975-01-18
Abstract: The self tapping screw (10) is provided with a screw thread with a rise of 40 deg. to 60 deg. on its forward flank and a rise of 0 deg. to 20 deg. on its rear flank. The end portion (24) of the screw has the thread periphery of true circular form whilst the portion (22) near the head has a periphery formed of three lobes with their dip diameter greater than the tip diameter of the circular portion (24). The screw (10) is driven into the hole (14) in the plastic (12) until the head (20) abuts the plate (16). The plastic material (12) is deformed and flows into the spaces between the threads so that only one sixth of a turn is required to tighten the screw.
Patent DE-2502126-A1 (DE)
Title: Workpiece heat expansion measurement - using laser beam interferometry to measure test piece dependent path length change
Inventor: LINSEIS SELB DIPL PHYS DR
IPC: G01B11/16
Filed: 1975-01-20
Abstract: The test piece is mounted in a groove in a mounting block and quartz crystals having a reflective surface are placed at each end of the test piece. Two laser beams are then directed along the groove at the test piece and the crystals, and, if the test piece is transparent, one beam is reflected by the crystal, at the far end of the test piece, through it, and the other by the crystal at the near end. The two reflected beams are directed via a mirror to an interferometer, when the pattern is used to detect and measure any test piece expansion. If the test piece is not of transparent material, an axial hole may be drilled through it to allow the necessary passage of the laser beam.
Patent DE-2503997-A1 (DE)
Title: Telephone exchange switching matrix - has polarised relays and semiconductor diodes with fault location facility
Inventor: BOCK HELMUTH-JOACHIM
IPC: H04Q3/00
Filed: 1975-01-31
Abstract: The telephone exchange matrix is part of a switching network connecting one set of line with a number of destinations. The incoming and outgoing circuits are in the form of a line and column matrix with their crossover points being connected via diodes. A system of bistable polarised relays (K11) forms the multiple switching network. Each relay has one end of its winding connected to one side of the matrix and the other connected to the second axis via two diodes (GE11), (GP11). An automatic fault alarm (MP), (ME) gives warning of diode failure. By means of suitable test voltages from the control unit (ST) the point of failure can be located.
Patent DE-2511804-A1 (DE)
Title: Circuit-breaker trip unit - has eccentric compression springs rotating actuating disc through lost motion connection
Inventor: GLOBIG MANFRED
IPC: H01H3/30
Filed: 1975-03-18
Abstract: Two spring-loaded telescopic arms (14, 15) provide the motive power for this circuit-breaker trip. The operate on a bar (11) so that it is rotated about a central shaft. This rotation is transmitted to a disc unit by a system of grooves and dowels (8, 9, 12, 13). The disc is linked to the circuit-breaker contacts by mechanical links (17). The spring-loaded arms are compressed by an external handle linked to the central shaft. This handle, after compressing the springs, causes the bar to go beyond a stable position which releases the spring energy to provide high speed movement to the circuit-breaker contacts.
Patent DE-2514349-A1 (DE)
Title: Analogue circulating storage circuit - with selector switch connecting load shifting circuit and signal generator in ring circuit (NL051076)
Inventor: LORENZ EBERHARD ING GRAD
IPC: G11C27/02
Filed: 1975-04-02
Abstract: The analogue circulating storage circuit has an input selector switch, which connects a load shifting circuit and a signal generator in a closed loop circuit. The signal generator consists of an analogue store, with a clamping circuit for adjusting the ground level of the load shifting circuit to that of the analogue store, and an amplitude restoring circuit. The latter pref. consists of a variable amplifier, with its signal input connected to the output of the analogue store and its output connected via the selector switch with the input of the load shifting circuit.
Patent DE-2515128-A1 (DE)
Title: Optical system producing thermographic picture - has receiving optics, scanner, transformation optics single photocell or group
IPC: H04N3/09
Filed: 1975-04-08
Abstract: The scanner of the optical system produces a picture raster and is designed for line scanning as an even-numbered, rotating polygonal prism. The input optics consist of two parts and the second part, which comprises a lens, is arranged directly in front of the polygonal prism. It has a focal distance corresponding to the distance from its own principal plane to the principal plane of the first part. The transformation optics are dimensioned and arranged, so that they transform the photocell or detector on the edge of the polygon. A diaphragm is arranged between the transformation optics and the photocell or the detector.
Patent DE-2515581-A1 (DE)
Title: Tert-butyl glycidyl ether prepn - reacting glycerol monohalohydrin with isobutylene and dehydrohalogenating
Inventor: SEXTON ARTHUR ROSS
IPC: C07C43/13
Filed: 1975-04-10
Abstract: Tertiary-butyl glycidyl ether is prepared by (1) reacting a glycerol alpha-monohalohydrin with isobutylene to produce a mixture of the 1- and 2-tert-butyl monoethers and the 1,2-di-(tert-butyl ether) of the halohydrin; (2) reacting the 1-monoether with a dehydrohalogenating agent, thus to produce tert-butyl glycidyl ether; and (3) separating the glycidyl ether from the remaining halohydrin ethers and recycling the latter to step.
Patent DE-2516468-A1 (DE)
Title: Self braking furniture castor - with telescopic mounting shaft with projection pivoted brake pads
Inventor: ROMAGNONI MAURO
IPC: B60B33/02
Filed: 1975-04-15
Abstract: The castor is mounted inside a moulded housing and located on a central pivot axis (15) using a moulded sleeve (12). The central shaft is pressed upwards by a spring (35) inside the bottom end of the hollow sleeve. As the weight is released on the castor the spring presses the central shaft upwards and in so doing pivots a brake cam (23) to press against the inside face of the castor wheel. The whole brake is compact and does not result in any differential movement of castor wheel and housing. Also the braked castor can be fitted to furniture with unbraked castors of similar dimensions without instability.
Patent DE-2517216-A1 (DE)
Title: Compsns. for treating skin, contg. heterocyclic acids - of pyridine, or pyrazine series, which retain or re-establish skin moisture
Inventor: MOELLER HINRICH DIPL CHEM DR
IPC: A61Q17/00
Filed: 1975-04-18
Abstract: Cosmetic compsns., esp. for care, protection or cleaning of the skin, comprise, apart from usual emulsifiers etc., 1-20, esp. 3-10 wt.% of acids of formula (I): (where R = H, 1-4C alkyl or hydroxyalkyl, or OH; X = N or CH; m = 1-4; n = 0-3; m + n is not >4; M = H, alkali or alkaline earth metal, or NH4 opt. substd. by alkyl or hydroxyalkyl). (I) act to retain or re-establish skin moisture so keep the skin soft, flexible and fully functional. Compsns. are e.g., baby creams, sun-screen creams, bath oils, soaps, etc.
Patent DE-2529430-A1 (DE)
Title: Flip chart horizontal pivot behind upper edge of board - the offset controlling handle facilitate chart flipping
Inventor: SCHREIER WALDEMAR
IPC: A47B97/02
Filed: 1975-07-02
Abstract: The flip chart features a backing board and telescopic legs with two U-shaped clips for supporting the sheets for easy flipping over. The telescopic legs (11-13) support the carrier frame (14) with the board (16) and control unit (17) as well as clips (18/19) and adjusters (21-23). The frame (14) is made up of cross beams (24/26) and inclined beams (27/28) which are a part of the telescopic legs (11/13). The horizontal shaft (53) carries knob (54) at one end and eccentrics (58/59) at the other end, the unit connected to swing shaft (41). The latter is fitted behind the top edge of the board (16). The eccentrics ensure a braking effect on the clips when they are in the closed position.
Patent DE-2531881-A1 (DE)
Title: Bonding of plastics film to surface of underground mine workings - using adhesive contg. polyvinyl methyl ether
Inventor: MEIER PAUL
IPC: E21F5/00
Filed: 1975-07-17
Abstract: The film is bonded to the walls of underground mine workings and to overlapping layers of film by using an adhesive based on polyvinylmethylether and a natural resin and/or its deriv. in a fluorochlorohydrocarbon solvent. Used to exclude coal dust from the working area in mechanical mining. The adhesive of the invention is H2O-soluble at low temps. and is therefore compatible with the moist surface of the mine walls. Solvent evaporates readily at low temps. and is non-toxic. The adhesive is non-inflammable and non-corrosive.
Patent DE-2534837-A1 (DE)
Title: Heavy duty braked castor - is swivelled on dome shaped support forming bearing shell with brake rod through hollow pivot
IPC: B60B33/02
Filed: 1975-08-05
Abstract: The support plate of the caster is dome shaped with contoured grooves to form the bearing shells for upper and lower ball races. The upper ball race is small and supports the plate against a fixed upper plate under the mounting plate (13) of the item the castor is fitted to. The lower bearing is larger and supports the back of the swivel forks. The bearings are fitted around a hollow shaft through whose centre is fitted the brake lever which presses a brake pad (19) onto the castor wheel. The caster is simple to fit and is robust, with a long life.
Patent DE-2535492-A1 (DE)
Title: Cooling tower upper edge with conical windshield - having sections which can be opened and closed
Inventor: BAER EDMUND DIPL ING
IPC: E04H5/12
Filed: 1975-08-08
Abstract: The tower has an upper rim which converges in the upward direction to deflect the wind and prevent ingress of cold air (downwash) into the top of the tower. The convergent section can be removed and replaced in sections of desired length and at desired points around the rim of the tower. The section of the convergent cover on the lee side of the tower can be opened to allow escape of vapour into a low pressure region created by the wind. This increases the tower efficiency to the extent that the tower height can be 20-30% lower whilst the efficiency is maintained at the level of a conventional tower of the original height.
Patent DE-2542825-A1 (DE)
Title: Blind rivet with coned head pull rod - ensures fractured head is not retained in bore or rivet
Inventor: KRAEMER LUDWIG
IPC: F16B19/10
Filed: 1975-09-25
Abstract: The tubular rivet (1) has a mushroom head (1a) and a hollow shank (1b). The pull rod (2) has a parallel shank (2) and a conical head (2d). The diameter of the head (2e) is slightly less than the hole into which the rivet (1) is fitted. When the rivet (1) is in its assembled position, the rod (2) is pulled away from the rivet so that the coned head (2a) expands the end of the hole to form a rivet head. The rod is then broken at the groove (2c) and the coned head (2d) falls away. The angle (a) of the coned head (2d) is about 90 deg. and so does not become wedged inside the bore of the rivet (1).
Patent DE-2551756-A1 (DE)
Title: Appts for making spacers in shuttering reinforcement irons - applies looped wires embedded across cement filled shells
Inventor: GOETSCHI RUDOLF
IPC: B28B23/00
Filed: 1975-11-18
Abstract: The apparatus for automatically embedding connecting wires (22) in spacer blocks (10) for use between reinforcement irons and shuttering, consists of a chain conveyor, on which the empty shells for forming the spacers pass under a chute which deposits the wires across the open tops of the shells, locating in slots through the sides with the looped ends of the wires projecting. then the shells pass under a cement delivery nozzle and are filled. The cement is levelled and compressed, then the filled shells are deposited onto planks fed onto a take-off conveyor underneath. The protruding looped ends are bent against the sides of the shells at an an gel, and finally the finished spacers are discharged onto a stacking conveyor.
Patent DE-2558099-A1 (DE)
Title: Pneumatic variable water level wave bath flow device - with water flowing down into tank and blown back into basin
Inventor: BOES CHRISTIAN DR ING
IPC: E04H4/00
Filed: 1975-12-20
Abstract: The pneumatic water-retaining installation is for use in wave-bath-type swimming-pools, and similar liq.-holding basins, designed to have a variable water level. The water flows at a natural incline from a basin into a tank. Air is blown into the tank to force the water out from the tank and back into the basin. The duct entry into the basin may be below, or at the same level as, the lowest water level in the basin. There may be a flap at the top, which is opened for water to flow into the tank, and automatically closed for the return flow. Water levels changes in large basins can be quickly effected.
Patent DE-2603371-A1 (DE)
Title: Fluid flow longitudinal slider angle valve - has radial inlet channel with dividing wall and displaceable positioner
Inventor: MUELLER THEODOR
IPC: F16K3/32
Filed: 1976-01-29
Abstract: The longitudinal slider angle valve has freely selectable position characteristic line, with a positioning unit axially facing in the outlet direction, and displaceable by means of a slider rod in an outlet channel tightly closed on one side. A radial inlet channel is provided. In the plane in which the axial outlet channel (2) cuts the inlet channel (1) issuing radially to it, a dividing wall (3) is arranged which uncovers the whole cross section of the inlet channel. The wall (3) has one or several through apertures (4), the surface profiles of which are formed in accordance with the required position characteristic lines. When a fluid flow has to be arranged, on the closed end of the outlet channels (2) side facing the adjustment disc (5), a constant volume space (6-5) is formed to take the fluid or a back flow channel (12) for the inlet duct (1).
Patent DE-2608786-A1 (DE)
Title: Bis cephalosporin derivs - prepd by reacting corresp 3-acetoxy methyl cpd with nucleophile stronger than acetoxy
IPC: C07D501/24
Filed: 1976-03-03
Abstract: New cephalosporin derivs. are prepd. from cpds. of formula (I), (where n is 0 or 1; A is H and acetoxy or both A are acetoxy; R is H, Na, NH4, non-toxic amine salt or a radical of an alcohol which is easily obtd. by conventional redn. B may be a direct bond or may be opt. branched hydrocarbyl, opt. substd. cycloalkylene, aromatic, heterocyclic or heteroaromatic) by reaction in aqs. or org./aqs. soln. with nucleophiles stronger than the acetoxy gp., opt. in presence of KI catalyst. Betaine and internal salt forms may be obtd. by passage through an ion exchange resin.
Patent DE-2609690-A1 (DE)
Title: High-precision mercury thermometer with surface ground capillary - with magnifying glass rod over scale and capillary passage
Inventor: ARMANN HERWALD
IPC: G01K1/06
Filed: 1976-03-05
Abstract: High-precision mercury thermometer comprises a glass capillary tube which is surface ground and polished in its longitudinal direction to a point close to the capillary passage, with a temp. scale marked on the cut face. Over the scale is mounted a profiled glass rod which magnifies the scale and the capillary passage. The profiled glass rod is pref. adhered to the cut face with a transparent adhesive having the same refractive index as glass, and pref. has a semicircular profile of which the circle dia. is greater than the width of the scale, or a prismatic profile which is wider at its base than the scale. The thermometer can easily be read with the naked eye without parallax, and mfd. at low cost. The profiled rod may instead be made of transparent plastic or plexiglass (RTM).
Patent DE-2611001-A1 (DE)
Title: Centre marking for photo copier - with pointer tag applied halfway along width of exposure window
Inventor: DIETRICH KARL-HEINZ
IPC: G03B27/62
Filed: 1976-03-16
Abstract: The photocopier has a glass window exposure station on which the original is laid, and covered by a flexible cover (3) to press it flat. A marking pointer (4a) is applied to the window, halfway along its length, so that it is reproduced on the copy at a point where the copy is to be folded in half. The system is used for double format copies. For single format sizes the original is laid on one side of the window, with appropriate correction in the copy size selection control. The pointer symbol can be a self adhesive mark attached to the window, or can be on a transparent flap hinged on the window edge, to fold down when required.
Patent DE-2619935-A1 (DE)
Title: Vacuum-proof sealing of pieces of thermoplastics tubes - using a heater and a mobile, two-part sealing punch
Inventor: LEIDIG BERNHARD
IPC: B29C35/08
Filed: 1976-05-06
Abstract: Device for welding or sealing, vacuum-proof pieces of thermoplastics tube comprises a heating element acting upon the tube and a two-part sealing punch which is lowered onto the tube. The punch consists of upper and lower portions and has lateral faces extending parallel to the length of the tube. The punch has, pref., conical recesses at its ends adapted to shape a transitional zone from cross-section of the tube on the resulting "pinched-off" welding seam. Enables the ends of a tube which is dimensionally stable under super-pressure from outside, to seal air-tight so that the sealing seams do not protrude beyond the dia. of the initial piece of tube.
Patent DE-2621377-A1 (DE)
Title: Stator lamination assembly for heavy electrical machines - uses groups of laminations bolted together for easy construction
Inventor: PETTY DAVID JOSEPH
IPC: H02K1/16
Filed: 1976-05-14
Abstract: The stator lamination construction for large electrical machines is of the modular type to reduce problems of handling and transport. The stator assembly can be easily dismantled for testing and replacement. The steel laminations of ring or segment outline are assembled in groups (1a) (1b). Each lamination is insulated by a special material with a Nitrile-Phenolic base. This also serves as a binder. Each stack of laminations is held in a clamping-ring (2) and separated by a packing piece (4). Any number of the lamination modules may be bolted together (2b) (2c) and the complete stator assembly is fitted with end rings (3) bolted to the outer lamination stack clamping rings (2).
Patent DE-2625770-A1 (DE)
Title: Automatic gear change control - has engine speed and torque monitors delivering signals to processing circuit to set gear ratio for minimum fuel consumption
Inventor: STRIFLER PAUL DR ING
IPC: F16H61/02
Filed: 1976-06-09
Abstract: The vehicle transmission has monitors which measure the engine torque, or an associated parameter, and the engine speed. An electronic processing circuit computes the fuel consumption w.r.t. the particular gear which is set and alters the gear setting if a better fuel consumption can be achieved. The system provides an automatic control to set the gear ratio for maximum fuel economy over a wide range of dynamic conditions. It can be adjusted to cover diesel or petrol engines, where the best economy is achieved with a set band of engine speeds.
Patent DE-2630503-A1 (DE)
Title: Dry dock support for ship hull - has base plate supported at variable height by sand carried in base support frame
Inventor: ANDERSSON WERNER
IPC: B63C5/04
Filed: 1976-07-07
Abstract: The load bearing support prop is used under the hull or keel of a ship in dry dock, in the course of construction or repairs, which can be lowered when necessary by letting sand out of a cylinder. A base section has an upper support (15) mounted on this, and a frame (16) lying loosely on the support. Above this there is a top loading block (17) with a base plate moved in the frame. Sand, or other material which can be trickled is stored in the frame, in sufficient quantity for support of the base plate at the level of the top of the frame, and there is a device for lifting the frame away from the support. The frame pref. comprises tubes, of square or rectangular cross-section. The unit can also be used for the support of heavy loads in building construction, and in other operations.
Patent DE-2630593-A1 (DE)
Title: Photographic camera light control system - has ferroelectric unit of variable transmissivity to control light flow
Inventor: JEHMLICH HANS DIPL PHYS DR
IPC: G03B7/099
Filed: 1976-07-07
Abstract: A device for light control in a photographic camera uses a material which can have its light transmissivity controlled by means of an electrical field, and a ferroelectric unit (1-4) inset into the exposure measurement or viewfinder light path. The light transmissivity of the ferroelectric unit (1-4) can be controlled in a remanent manner in relation to the object illumination level by means of a determined electrical signal produced by an illumination control device. A further input signal is used to reduce the transmissivity of the unit (1-4).