baber/WOPTO huggingface dataset:
Patent DE-2354508-A1 (DE)
Title: Radio receiver with squelch control - has switch in HF voltage supply periodically operated by clock pulse generator
Inventor: KETTERLING HANS-PETER DIPL-ING
IPC: H03G3/34
Filed: 1973-10-31
Abstract: The receiver h.f. part is connected to the voltage supply only when a useful signal is present. The squelch control has a noise replacement circuit effective only during open periods of the switch. Its signal decay time is about equal to the building-up time of the h.f. part. The noise replacement circuit is connected to the switch output, and conveys, during the off periods, the h.f. part supply voltage at zero level as d.c. voltage to the squelch control evaluation circuit. The noise replacement circuit consists of two diodes connected in series and connecting the switch output to the evaluation circuit input, and of a resistor in series with a capacitor. The resistor is connected to the supply voltage terminal which is not switched.
Patent DE-2402110-A1 (DE)
Title: Resistance welding method - using projections on metal surface to make the initial contact
IPC: B23K11/14
Filed: 1974-01-17
Abstract: A resistance welding method to join a metal plate to a metal component or to another metal plate makes use of pressed-out projected parts on one component alternating with unchanged sections. The projections melt away when an electric current is passed through them until the unchanged sections make contact. The projections can be produced by an impact tool applied to the part itself or they can consist of loose elements made of sheet metal or wire. This saves expensive cutting tools to produce the projections by metal removal. The loose elements can be produced cheaply from scrap metal.
Patent DE-2406108-A1 (DE)
Title: Copper recovery from scrap metal - by treatment with ammonium carbonate and methane followed by chelate extraction
Inventor: POARCH ARCHIE L
IPC: C22B15/00
Filed: 1974-02-05
Abstract: Cu scrap is treated with an aq. lye contg. NH4+, CO32- and Cu2+ ions and CH4 to form a cuprous ion-ammonia complex, then O2-enriched air is blown through the lye to convert the Cu+ ions to Cu2+ ions. The Cu is extd. from the lye with a chelate-forming extn. agent in a halogenated hydrocarbon solvent; e.g. CCl2:CCl2, CCl4 or CHCl:CCl2, thereby forming an org. extn. phase contg. Cu. The org. phase is treated with H2SO4 to recover the Cu which can then be sepd. by electrolysis, by chemical redn or a Cu salt can be obtd. by crystn. After removing Cu form the lye, impurities, e.g. Zn and Pb, can be extd. and the lye recirculated. The chelate forming extn. agent can be an alpha hydroxyoxime and/or 2-hydroxybenzophenoxime, modified through catalytic alkylation.
Patent DE-2408051-A1 (DE)
Title: Removing manganese from water - by treatment with oxidising agent and with sodium aluminate
Inventor: PAUL RUEDIGER DR
IPC: C02F1/64
Filed: 1974-02-20
Abstract: Removal of manganese from water by treatment with an oxidising agent followed by filtration is improved by addition, prior to filtration, of a sodium aluminate soln. in an amt. of 0.7-5 mg./1., pref. 0.8-2 mg./1. calculated as Al. NaOH may be added to increase the pH. Suitable oxidising agents include air and KMnO4. Removal of Mn from water designated for use in prodn. of TiO2 pigment (manganese causes discolouration of this pigment) is carried out effectively (down to 0.05 mg. Mn/1.). Sodium aluminate acts as a flocculating agent; the pptd. alumina absorbs manganese (IV) oxide hydrate produced by the action of the oxidising agent; the flocks have good filterability. The removal of manganese can be combined with the removal of iron.
Patent DE-2417882-A1 (DE)
Title: Hydraulic operating mechanism for motor vehicles - has double hydraulic cylinder fitting in hollow end stanchion in vehicle superstructure
Inventor: WAGNER ANDREAS
IPC: B60P1/26
Filed: 1974-04-11
Abstract: The mechanism is intended for side and tailboards of rear tipping superstructure. The design allows the boards to be pivotted to more than 90 deg. from the closed position. There is a sideboard folding link which fits in a hollow recess in the superstructure. The hydraulic cylinder is connected to this link and stretches upwards relative to the horizontal position of the superstructure and is inside a hollow corner stanchion. The operating level strut forms an obtuse angle to the side wall. An additional hydraulic cylinder fits in the stanchion and operates a safety hook that locates in the closed position on a projecting dowel on the outside of the sideboard.
Patent DE-2420677-A1 (DE)
Title: Compressor with eccentric rotor - has triangular slide with trapezoidal side members
Inventor: SCHNEIDER ULRICH DIPL ING
IPC: F01C21/08
Filed: 1974-04-29
Abstract: Comprises comprises an eccentric rotor which rotates in a circular-section bore between two parallel side walls and over the surface of which moves a slide having a length equal to the width of the rotor. The slide consists of a triangular control member, and two trapezoidal side members the three members abutting each other slidingly with oblique surfaces. The central member has its apex resting on the rotor surface, and is biassed towards the rotor by a spring.
Patent DE-2429088-A1 (DE)
Title: Blood pressure meter with incandescent lamp - is of simple construction and reliably prevents untimely light signals
Inventor: SPEIDEL BLASIUS
IPC: A61B5/021
Filed: 1974-06-18
Abstract: Blood pressure meter comprises an inflatable sleeve, a transducer for converting Korotkoffsky sounds to electrical signals, an amplifier of which the load comprises an incandescent lamp. At the amplifier output parallel to the lamp is an ohmic resistor which may be connected as the load instead of the lamp by a reversing switch. The switch may form the switching member of a relay which may be connected in parallel with the electric motor of the pump for inflating the sleeve, pref. by mean of a switch with two switching-on members. The avoidance of superfluous lamp signals avoids irritation of both doctor and patient.
Patent DE-2437212-A1 (DE)
Title: Suspended grid ceiling air-conditioning - using fresh outlets parallel to ceiling above grid
IPC: F24F13/26
Filed: 1974-08-02
Abstract: The purpose is to provide an air-conditioning system, making use of a suspended grid-pattern ceiling, which allows a favourable room height and an attractive ceiling layout, while generating a non-oppressive air ducting arrangement. The air outlets (6) in the space above the grid ceiling (2), which induct fresh air, are arranged with discharge directions parallel to the ceiling. The grid ceiling may be carried directly to the external wall, windows or peripheral internal wall. Guide lamellae (10) which can swivel about horizontal axes may be mounted in the space above the grid ceiling, in the path of the air flow, and of the same as the height of the open space.
Patent DE-2440548-A1 (DE)
Title: Mounting for electrical machine - has pins and sprung screws retaining stator housing via feet to concrete foundation
Inventor: SPIRK FRANZ
IPC: H02K5/24
Filed: 1974-08-21
Abstract: The mounting, for an electrical machine with horizontal shaft, has cylindrical pin passing through feet (2) on the stator housing and into the concrete foundation block (4) on which the machine rests. In addition to the pins, the feet also have screws (6). The screws pass through the feet and screw into the foundation blocks and each has a washer spring (13) between its head and a foot of the housing. The pins and feet are encircled by two eccentric sleeves (7, 8) located one inside the other. The mounting ensures rigid support especially during short circuits.
Patent DE-2440899-A1 (DE)
Title: Handset for telephone instrument - has stable casing made of two or more parts, and encapsulated electroacoustical transducer system
Inventor: AWAKOWICZ ERWIN
IPC: H04M1/03
Filed: 1974-08-27
Abstract: At least one of the casing parts has sound holes, and an elastic damping piece is designed as case for the transducer; at least one projection or recess is provided on the case side wall and in corresponding inner surface of the casing, which serve as a locking system for the case and casing; it is secured by the inserted transducer system being tangent to the case side wall in the recess or the projection area, as in 23 09 978. The case (3) has a strap (6) covering the transducer (1), hinged (13) at one end on the case and provided with locking elements at the other (7), which can lock with corresponding elements of the case; when locked, the strap ensures the transducer axial position in its case.
Patent DE-2443768-A1 (DE)
Title: Writing ink for use on non-absorbent surfaces - contg. a carrier forming large mixed crystals with dyestuff used
Inventor: NGUYEN NHU-VINH ING GRAD
IPC: C09D11/16
Filed: 1974-09-13
Abstract: A writing ink for use on smooth, impermeable surfaces such as blackboards consists essentially of a dyestuff, a binder and a solvent for these and is characterised by the use of a neutral dye which is non-polar or only weakly polar and a colourless carrier which forms large mixed crystals therewith. Inks of the invention are free from defects found in other inks proposed for similar purposes.
Patent DE-2453462-A1 (DE)
Title: Plastics or synthetic rubber pipe reducer - which is funnel shaped to accommodate different pipe diameters for filing
Inventor: KNOP THEODOR
IPC: B23B5/16
Filed: 1974-11-12
Abstract: The funnel-shaped pipe reducer is for applying to copper covered or copper strip coated synthetic rubber of PVC pipes. The pipes are sawn to size and filed or rasped at an angle of 30-35 degrees for fitting into a sleeve having a rubber roller cage. The pipe reducer has three or more knives. The foot supports are arranged in parallel to the funnel. The various dias. of pipes are accommodated in the funnel and turned within it under a light pressure. The necessary filing is thereby executed without wearisome and time-consuming hard filing, while hand slips and other small scale accidents are avoided.
Patent DE-2454518-A1 (DE)
Title: Unsulphonated azo dyes from 2,4-di-cyano-3,5-di-aniline - and carboxylated coupler, used for dyeing (polyester) textiles
Inventor: KOMOROWSKI KLAUS DR
IPC: C09B29/08
Filed: 1974-11-16
Abstract: The unsulphonated azo dyes (I) are novel cpds. of the formula (inwhich K is derived from a coupling component of the aniline or pyridine series, contg. a carboxyl gp. X is H, halogen, CN alkylsulphonyl or NO2). (I) can be used for dyeing textiles, esp. synthetic textiles such as polyesters by treating with an alkaline soln. of (I) and an acid in any sequence, esp. by acidifying an aq. alkaline soln of th dye to liberate the free acid and then carrying out dyeing to exhaustion. It is also possible to carry out dyeing from water-immiscible organic solvents by the exhaustion process. Clear shades with good general fastness are obtd.
Patent DE-2457193-A1 (DE)
Title: Heated insulated bottle as hand warmer - covers palm and inside wrist only and has external casing
Inventor: NABER GEB ENGELHARDT MARIANNE
IPC: A61F7/02
Filed: 1974-12-04
Abstract: The impermeable flat bottle (6) covering the palm and inner wrist only of the hand, has a hermetically sealing filling inlet, and can be of rubber or plastics and the inlet is situated in the carpal region of the hand. A screw cap (12) for the inlet has a recessed grip and is surrounded by a funnel (14) of impermeable, elastic material. A protective casing (7) encloses the bottle and has an overlapping slit opening (18). Adjustable straps (21, 22) fasten around the wrist and a loop (20) fits over one finger to hold the bottle in position.
Patent DE-2501759-A1 (DE)
Title: Metal-framed prestressed-glass panels changing cubicle - with horizontal edge metal profiles running through to vertical edges
Inventor: BAUM HANS DR
IPC: E05C7/02
Filed: 1975-01-17
Abstract: The array of changing-room cubicles, or other cabins, is made up from prestressed panels of glass, as used in sports buildings or swimming-baths, with the panels terminating above the floor to facilitate cleaning. there is a supporting frame of vertical posts with lengthways and cross beams of metal shaped-sections, forming the top end of the cubicles. The glass panels forming walling elements and doors are comprised along the horizontal edges with metal shaped sections running through to the vertical edges; these sections are attached to the verticals and support frame. All the fixtures, seatings, locks and fittings are mounted exclusively on the verticals or frame, and to the metal shaped-sections seated along the horizontal edges of the glass panels. Stability is not affected if one of the glass wall elements is broken, and there are no weak points especially prone to breakage.
Patent DE-2502982-A1 (DE)
Title: Indexing system for digital chronometer display - is operated via drive motor or via manual push button
Inventor: KRATZ BERNHARD
IPC: G04C9/00
Filed: 1975-01-25
Abstract: The digital display employs several indicator elements (3) e.g. number drums, used to indicate the time and date etc. with a drive motor (14) for indexing each indicator element (3) an one or more push buttons (5) each associated with one of the indicator elements (3), to index the latter via a mechanical coupling mechanism (8, 11). The latter comprises a lever (8) which can be pivoted by depressing the push button (8), against the action of a spiral spring (16). The other end of the pivoting lever (8) carries an indexing roller (11), which can be brought into contact with the indicator element (3) so as index the latter. This roller (11) can also be driven from the drive motor (14) via a drive roller (12), to index the indicator element (3).
Patent DE-2506585-A1 (DE)
Title: Tractor-towed tree-trunk branch and twig stripper - with embracing knife-edge jaws drawn along lying trunk from root end
Inventor: KIELDSEN HANS
IPC: A01G23/095
Filed: 1975-02-17
Abstract: The assembly is designed to remove branches and twigs from the trunks of trees lying on the ground. It comprises a set of jaws, provided with a cutting edge, which lock round the trunk. It is attached to a vehicle, especially a tractor, and drawn along the trunk from the root end, which is held fast. The end is preferably held by a grab, which may be attached to a second vehicle moving in the opposite direction at the same time, and which may likewise be formed as a stripper. The main assembly comprises preferably two jaws mounted on a support plate, with knife edges facing the operating direction. An effective strike is maintained throughout,. regardless of the size of the tree.
Patent DE-2507641-A1 (DE)
Title: Hot rolled strip cooling control - varies coolant nozzle group numbers as function of strip velocity and set cooling time
Inventor: POLISJUK WALERIJ M
IPC: B21B39/00
Filed: 1975-02-21
Abstract: The temp. of hot rolled strip is kept constant during the cooling process prior to it entering the coiling reel by spraying water over it from groups of nozzles. The number of nozzles in action at any time is automatically controlled as a function of the strip velocity and the set temp. gradient. This results in better and more uniform mechanical props. of the finished steel strip.
Patent DE-2508497-A1 (DE)
Title: DC braking system for high-speed machines - controls several star-connected three-phase hysteresis motors in parallel
Inventor: MAASS KARL DIPL ING
IPC: H02P3/24
Filed: 1975-02-27
Abstract: the DC braking system is suitable for high speed rotating machines such as centrifuges. A number of parallel hysteresis motors with star-connected three-phase windings are normally supplied from a 300 volt 1 kHz frequency converter source. A series of switches open circuits to one of the three windings of each motor. Another bank of switches disconnects the motors from the AC supply and connects the remaining two windings of each motor in series with each other and with all other motor windings. These series-connected windings are then fed with a control current to provide continuous or progressive braking of each motor.
Patent DE-2510914-A1 (DE)
Title: Electronic coin tester with two or more probes - has test windings and switches consecutively operated by coin
IPC: G07D5/00
Filed: 1975-03-13
Abstract: When a coin (2) passes into the first testing operation, its signal is used for triggering a timer, (30) whose time constant is such that its output signal ends before arrival of test result from the last test station operated by the coin. The coin is not accepted so long as this timer signal lasts. Coincidence of the timer signal with the last test station output signal generates a signal triggering or re-triggering the timer. The two sensors (10, 20) are connected to electronic switches (12, 22) each of which is connected to an AND gate (13).
Patent DE-2511221-A1 (DE)
Title: Fluid pressure medium motor - sliding vanes are angled with respect to hollow hub centre
Inventor: MECHAM GEORGE W
IPC: F01C21/18
Filed: 1975-03-14
Abstract: Into a drum-shaped casing projects from one end a fixed hub, from the other a ring-shaped rotor connected to an output shaft. The rotor inner surface embodies recesses which, in conjunction with endplates and the smooth outer surface of the hub, form chambers into which project vanes sliding in slots, radial but angled with respect to the hollow centre of the hub through which enters the pressure medium. The fluid presses the vanes against the rotor before flowing into one of the rotor chambers through passages angled to produce clockwise rotation. Exhaust is through divergent nozzles and reaction vanes. Sealing is by strips aided by fluid pressure between chambers, by cylindrical rollers between vanes and rotor.
Patent DE-2515237-A1 (DE)
Title: Rectangular-sectioned tubular-bar lattice girder nodal unit - with inserted assembly pieces or screw-coaxial socket with dowel pins
Inventor: ORGIN DRAGUTIN DIPL ING
IPC: E04B1/24
Filed: 1975-04-08
Abstract: The detachable nodal unit is for use on a lattice girder, esp. of the type which makes use of rectangular-cross-sectioned tubular bars, with two nodal plates and pre-stressed screws. A number of inset assembly pieces (4), pref. a pair, are inserted in the interior of the tubular bar (1), and these have extensions (6) at each end inserted inside the tubular bar, coaxially with the prestressed screw (5), and this is connected to the bar with the aid of two or more dowel pins. The diameter of the inset assembly pieces may be the same as, or less than, the diameter of the holes for insertion of the prestressed screw.
Patent DE-2517445-A1 (DE)
Title: Preventing snoring using flexible fitting worn between lips - having front and rear plates outside and inside mouth respectively
Inventor: RUFF HERMANN
IPC: A61F5/56
Filed: 1975-04-19
Abstract: A device for preventing snoring comprises a forward, shell-shaped part which is worn outside and covering the lips, a rear elastic plate-shaped part which fits between the rear face of the lips and front of the teeth, and an interconnecting horizontal web (dotted) joining these two together and fitting between the lips; this web extends generally over a portion only of the length of the front and rear plates. The front shell-shaped plate is curved so that, when not being worn, it tends to press back at the ends against the rear plate and thus when is it being worn bears lightly against the face. The shell-shaped front plate may be wider (i.e. vertically deeper) than the rear plate. There may be small apertures in both front and rear plates above and below the web and in alignment in the two plates. The rear plate may be slightly longer than the front plate. The general shape of the front plate may be of a horizontal figure-of-eight. The device may be made of two parts, the connecting web and front plate are integrally formed and the rear, free face of the connecting web has two flanges forming a groove between them, which is inserted as a snap-fit into a corresponding slit in the rear plate. Device is pref. of plastics matl. esp. plasticised PVC.
Patent DE-2521157-A1 (DE)
Inventor: KAEUFFER KARL CLEMENS DIPL CHE
IPC: B03C5/00
Filed: 1975-05-13
Abstract: In the mercerisation of textiles, the mercerising liquor, which consists essentially of sodium hydroxide solution, becomes contaminated with impurities washed out of the textiles which prevent reuse of the liquor. Elimination of these impurities from the liquor is possible by subjecting the mercerising liquor to electroflotation while adding oxygen, since the impurities which are present therein in the form of a soluble sol are converted into an insoluble gel which is then mechanically separated from the liquor.
Patent DE-2521818-A1 (DE)
Title: Optical system for colour television camera - with simple low pass filter having optimum optical characteristics
Inventor: NISHINO HISASHI
IPC: H01J29/89
Filed: 1975-05-16
Abstract: The system has a low pass filter between a lens and a colour filter, whereby the low pass filter comprises rows of leaves mounted on a transparent substrate, as in 2137466. For spatial modulation of the colour image relative to the scanning direction the leaves (25) are arranged so that the rows are separated by passages (23, 24). The angle between the passages and the scanning direction is such that cross talk between the chrominance and luminance signal is prevented without the resolution of the optical system being adversely affected.
Patent DE-2524893-A1 (DE)
Title: Printing head for mosaic printer - integrated printing and drive head consists of spring mounted electrodes repelled from fixed wall when energized
Inventor: HEIDER ULRICH DIPL ING
IPC: B41J2/295
Filed: 1975-06-04
Abstract: In a mosaic printer, where each sign is printed by a number of independent dots, the head is characterised by an arrangement of integrated printing and drive heads which lie elastically through return springs against a fixed wall. On energising the electrodes (6, 7) with a steeply changing electrical field, the whole of the printing and drive head is repelled from the fixed wall and because of its inertia causes an impression on the paper. The elements are arranged in layers over each other and are armour plates on their face side (3, 4, 5) and form a type projection (13) to cause the impression. The return springs are conductive.
Patent DE-2525389-A1 (DE)
Title: Control for rotating actuator elements - has elements connected to conveyor elt and guide rails
Inventor: SCHROEDER ROLF
IPC: B65G17/48
Filed: 1975-06-06
Abstract: The control is for the continuous movement of driven or driving actuator elements, using a conveyor belt, which passes in the same plane over two guide rollers. The actuator elements (5) consists of levers, with one end hinged to the conveyor belt (3), so that they may be pivoted away from each other. The other lever ends are guided opposite to each other in two guide rails (8). The rails are positioned between two sections of the conveyor, and project past it on one side. The ends of the rails merge via a reversing mechanism (9). The actuator elements may be held pivoted in a double roller (7), which bridges the gap in the guide rails near one of the lower positioned guide rollers (2).
Patent DE-2526023-A1 (DE)
Title: Relief candle made by rolling sheet of wax around wick - for industrial or domestic prodn. with uniformity of aesthetic design
Inventor: IHL KARL
IPC: C11C5/02
Filed: 1975-06-11
Abstract: Relief candle is produced by forming a rectangular sheet of wax with relief-like projections and/or recesses by means of a correspondingly profiled casting tray. The sheet is then rolled up from one end, in the region of which is placed a wick projecting over one side edge of the sheet, towards the other end so that the coils of the sheet lie adjacent to each other to hold the wick in position. Molten wax is poured into the tray and partially solidified, then while still plastic the sheet is rolled up, and hardened afterwards. The edge of the sheet opposite the wick. edge may be provided with a flat surface for standing on by mechanical or thermal treatment, e.g., by dipping the lower end of the candle into a heated water bath or placing it on a hot plate to soften the wax.