baber/WOPTO huggingface dataset:
Patent DE-2440023-A1 (DE)
Title: Current mirror circuit - generates current whose intensity and polarity correspond to specified current using two transistors with bases and emitters connected
Inventor: GOERTH JOACHIM
IPC: H03F3/18
Filed: 1974-08-21
Abstract: The apparatus comprises two similar transistors whose bases and emitters are joined together; and the current gains of the two transistors are equal. A third transistor (T3) is inserted between the bases of the above two transistors' (T1, T2) and their collectors. This transistor compensates ratio error, and it has a current gain of one; its emitter is connected with the two bases of transistors (T1, T2), its base is connected to the collector of the transistor (T1), and its collector is connected to the collector of the transistor (T2). An alternative system may use two transistors connected between the transistors (T1) and (T2) with their bases connected together, to the collector of the transistor (T1) and to the collectors of one of the two transistors.
Patent DE-2440994-A1 (DE)
Title: Parcel binding machine with rotating operating cam arm - has crimped anchor clip lugs facing parcel after installation
IPC: B65B13/34
Filed: 1974-08-27
Abstract: A parcel binding machine uses a metal strip (20) and U-shaped anchor clips (17). Below the parcel suppor table a rotating cam arm operates the strip feed mechanism, cutter and crimping tool in the correct sequence and timing. The crimping tool (18) which closes the anchor clip around the overlapping strips is such that the strip deflection away from the parcel (19) is a minimum (22). This is achieved by pointing the anchor clip (17) towards the parcel prior to crimping, thus maximum strip tension is obtained after retraction of the crimping tool. The strip is fed between two freewheeling drums in contact, operated by the angular movement of a drive lever.
Patent DE-2441156-A1 (DE)
Title: 1-Furfurylamino-uracil derivs - prepd by reducing 1-furfurylideneamino-uracils with sodium borate
Inventor: JAEGER GERHARD DR
IPC: C07D239/70
Filed: 1974-08-28
Abstract: 1-Furfurylideneamino-uracil derivs. of formula (I): (where R1 is alkyl, alkenyl, alkynyl, haloalkyl, cycloalkyl, alkylcycloalkyl, halocycloalkyl, alkoxycarbonylalkyl, alkylthioalkyl, alkoxyalkyl, aralkyl (opt. substd. in the aryl residue) or opt. substd. aryl; R2 is H, halogen or alkyl; and R3 is alkyl; or R2 and R3 are linked to give a polymethylene bridge so as to form an opt. alkyl-substd. ring fused onto the uracil nucleus), e.g. 1-furfuryl-amino-3-cyclohexyl-5,6-trimethylene-uracil, are new cpds. (I) have effects on plant growth, and can be used as defoliants, desiccants, herbicides and germination inhibitors. Depending on rate of application, they can be used as total herbicides or as selective herbicides (esp. in crops such as cereals, maize and cotton). Results of tests for herbicidal activity are given in the specification; thus, in a test for pre-emergence herbicidal activity, (I;R1 = cyclohexyl, R2 + R3 = trimethylene) at a rate of application of 5 kg/ha gives 100% control of Echinochloa, Chenopodium, Sinapis, Stellaria, Galinsoga and Matricaria and 40% control of cotton, but has no effect on oats, wheat or maize.
Patent DE-2441700-A1 (DE)
Title: Differential pressure switch controlled flow heater - has two volume regulators in parallel behind switch, one preceded by valve
Inventor: EBERTH HELMUT
IPC: G05D23/00
Filed: 1974-08-30
Abstract: The heater installation incorporates a switch, operating in dependence on the flow volume for control of its heating system, which is divided into partial and full heating, and a volume regulator which maintains outlet volume at a constant level irrespective of the flow pressure. An additional volume regulator is included in the circuit, two volume regulators being connected in parallel behind the differential pressure switch. Preceding one of the volume regulators is a valve which can be activated manually or electrically. The two volume regulators may be mounted in a common housing, and the valve may be of magnetic type with a manually operated switch. Selective full heating switching is provided by simple and economic means.
Patent DE-2443612-A1 (DE)
Title: Astable multivibrator with two transistors - is fitted with comparator at its input which is used for controlling two diodes
Inventor: LUCZAY LASZLO DIPL ING
IPC: H03K3/282
Filed: 1974-09-12
Abstract: The multivibrator has transistors which are cross-connected, and there are capacitors in the connections between the collector of one transistor and the base of the other. The emitters of the transistors are earthed, and the collectors of the transistors are connected to the positive terminal of the d.C. supply. One collector is connected through a resistor and the other is connected through a signalling lamp. The comparator (11) controls the multi-vibrator (111) through a Z-diode (14) between the comparator (11) output and transistor (13) base, and there is a diode (14) between comparator output and the Z-diode (14).
Patent DE-2445949-A1 (DE)
Title: Pneumatic impulse valve with intensifier - control slide has reverse-blocking element
Inventor: SCHLECHTRIEM WERNER
IPC: F15B13/04
Filed: 1974-09-26
Abstract: The valve has an intensifier for the switch impulse for reversing. The impulse acts onto a membrane, to close a control nozzle connected to a pressurized air supply channel. The resulting dynamic pressure acts onto the front face of a control slide. The control slide (1) carries elements, to avoid uncontrolled reversing, by increasing friction, or reducing pressure. The friction increasing element consists of an O-shaped brake ring, inserted into a groove (28) in the slide, and projecting over it. The pressure reducing element consists of a jet nozzle in the air pressure supply channel. The channel is concentrically located in the control slide, with the jet nozzle at the end facing the reversing chamber (12).
Patent DE-2448223-A1 (DE)
Title: Self processing camera - with improved gearing to enable process rollers to function without interference from shutter resetting mechanism
Inventor: FAUTH GUENTER
IPC: G03B17/52
Filed: 1974-10-09
Abstract: The self processing camera has a mechanical gearing linked to the electric drive motor, with the gearing arranged so that after the shutter has been released and the exposure completed, the drive mechanism first tensions the shutter again and secures it against release, and then drives the exposed film pack through the processing rollers at a uniform speed. The shutter is secured so that it cannot be inadvertently operated, thereby interfering with the uniform processing speed. The system is simple and effective, and replaces complex timing mechanisms.
Patent DE-2457630-A1 (DE)
Title: Movable safety screen for power presses - has pivoting vertical support member and safety weight on screen access opening
Inventor: DOLDERER ERICH A
IPC: F16P3/04
Filed: 1974-12-06
Abstract: A vertical frame is fixed to the press table and a movable screen. The press control is coupled with the position of the safety screen. One of the vertical members of the frame can be pivotted through 180 degrees enabling the screen to be tilted. At least two of the frame members are designed as telescopic plates. The access opening on the frame has a small safety weight which also connects to the starter for the press. There is a clamping mechanism to hold the screen on the guide rails. The telescoping plates are made of transparent material.
Patent DE-2458304-A1 (DE)
Title: Slag granulate obtd. from coal burning plant - where slag is milled with cement or lime to form hydraulic binder
IPC: C04B7/28
Filed: 1974-12-10
Abstract: Mixed binder, made using the slag granulate arising from slag-tap fired boilers, in which the slag granulate is milled to the fineness of cement and mixed with Portland cement and/or burnt lime and possibly with fly ash, pref. ash obtd. from dry roastings, the milling pref. being under-taken on the mixt. The ratios of the various amts. of matls. in the mixt. pref. depends on the chemical compsn. of the slag granulate being utilised, the application envisaged, and the strength required. The mixed binder is pref. employed together with natural rock, blast furnace slag, steelworks slag, or smelting slags in a layer of ballast, or for consolidating the residue from burning refuse, fly ash, or earth contg. clay. Mixed binders with high strength can be obtd.
Patent DE-2458802-A1 (DE)
Title: Floor coatings which discharge electrostatic charges - by using a thin undercoat of metal applied by spraying
Inventor: HUEBER HANS-JOACHIM
IPC: H05F3/02
Filed: 1974-12-12
Abstract: Process for mfg. coatings for mineral substrates, where the coatings cause the conductive discharge of electrostatic charges, by applying a conductive coating contg. pigments. Prior to applying the coating on the mineral substrate, metal spraying is employed to deposit a metal layer which carries the electric current. The metal undercoat is pref. 10-100 mu m thick, and pref. consists of copper, aluminium or zinc which may be applied in the form of a grid or network. Used for example, on plaster or concrete floors. Good adhesion is obtd. between the metal undercoat and the mineral substratem and provides effective and reliable discharge of electrostatic charges.
Patent DE-2459419-A1 (DE)
Title: Photo-polymerisable polyurethane laminating adhesives - contg. (meth)acrylate esters but no solvent
Inventor: HENKE GUENTER DR
IPC: B32B27/34
Filed: 1974-12-16
Abstract: Lamination of polyolefin films with themselves or with PVC, polyester, polyamide, cellulose and/or metal films, uses as binder between the films, a photo-polymerisable compsn. contg. reactive NCO gps. and consisting of (A) 30-80 wt.% reaction prod. contg. free NCO gps. from a di- or tri-isocyanate, and a polyester or polyether of mol. wt. 200-5000 contg. free OH gps (B) 70-20% (meth) acrylate ester of 2-18C (cyclo)aliphatic alcohols contg. an average of 3-6C atoms, and (C) 0.2-5 wt.% w.r.t. (A+B) of photo-polymerisation initiators. The compsn. have suitable viscosity for laminating, without need for addn. of solvents or large amts. of co-polymerisable monomers. Drying stages to remove solvent are eliminated.
Patent DE-2503918-A1 (DE)
Title: Rotating wing flying machine - has cylindrical rotors comprised of aerofoil sections carried between rotating discs
Inventor: KLEPSCH CHRISTIAN
IPC: B64C23/08
Filed: 1975-01-31
Abstract: The fuselage contg. driver/passenger accommodation and the propulsion unit, with control surfaces and landing gear is suspended from lifting rotors by casing and limited (50%) slip differential unit. The rotors comprise vertical discs and separately activated disc brakes. S-section blades are free to rotate on horizontal shafts equidistant from the disc centre and evenly spaced. Lift and displacement horizontally derive from rotation of the discs, causing rotation of the blades, and varies with disc speed. Control surfaces determine fore and aft inclination and supplement differential braking for turning.
Patent DE-2506720-A1 (DE)
Title: Floor covering patterning process - has components of pictorial pattern and basic pattern bonded to carrier
Inventor: MAIBAUM WILLI
IPC: D06Q1/00
Filed: 1975-02-18
Abstract: In a process for applying a decorative pattern to a textile fabric, partic. pictorial designs to floor coverings, the fabric pattern components are placed on the underlay with a basic pattern and bonded into place. The process gives a simple patterning technique giving a dense and high-contrast dividing line between the patterned zones and the pile or felting pattern of the underlay.
Patent DE-2512623-A1 (DE)
Title: Desoldering tool with heater and suction device - gives good assessment of solder melting instant when flux vapours are present and uses cylinder working against spring
Inventor: SCHRECKENEDER KARL
IPC: B23K1/018
Filed: 1975-03-21
Abstract: A desoldering tool is used for multi-contact electronic components fitted to a circuit board, and consists of a pair of pliers applied across the board, with one side provided with a heater to melt the solder, and a suction device to remove it, and the other side gripping the components and extracting it when the soldered joint is released, as in 2255716. The arm (3) of the pliers is provided with a supporting arm pointing away from the heater (4) and constructed as a stirrup (5) and continued in the form of a pins (16) surrounding the withdrawing head (21) under the control of a compression spring (19).
Patent DE-2521604-A1 (DE)
Title: Protection system for superconducting windings - prevents quenching by removing heat by rapidly increasing coolant flow through winding
Inventor: BENZ HANS
IPC: H02K55/00
Filed: 1975-05-15
Abstract: The protection system, for superconducting windings, prevents quenching, i.e. unwanted transitions from superconducting to normally conducting states, by removing heat rapidly. This heat which causes or threatens to cause a quench, is removed by suddenly increasing the coolant flow through the superconducting winding. A coolant storage vessel is connected into the cooler system before the winding and a fast-acting valve is located after the winding. The valve is triggered by a monitor that measures the voltage across the winding or the temperature and/or pressure difference of the coolant flowing around the winding.
Patent DE-2525337-A1 (DE)
Title: Power generator utilising solar energy - employs low temp. boiling liquid other than water to drive vapour turbine
Inventor: KRAUSS RALF HORST
IPC: F01K25/08
Filed: 1975-06-06
Abstract: A pump (P1) draws fluid from a reservoir (VB) and delivers it to a heat exchanger (WAT) in which it is heated by the upper layers of sea water. From this it passes to a preheater (VW) warmed directly by sunlight and then to an evaporator-superheater (UHVD) which is heated by solar energy from a collector and reflector (SSA). The vapour passes to a vapour turbine (DT) which can deliver mechanical energy directly or drive an electrical generator. The exhaust vapour is condensed in a condenser (KS) by heat exchange with water drawn from deep layers (SMTW) of the sea which are at suitable constant temperature. The use of an appropriate working fluid enables solar energy to be usefully recovered with a small temp. difference in the process.
Patent DE-2525666-A1 (DE)
Title: Circuit to improve pulse accuracy of invertor control - has controllable freely oscillating pulse generator
Inventor: LINDEN WILHELM DIPL ING
IPC: H02M7/162
Filed: 1975-06-09
Abstract: The generator (5) generates a control pulse train. A pulse position control circuit (8-10) controls the above pulse generator (5) by comparison of pulse from the control unit (4) with the control pulses. A pulse shaper derives from control pulses a switching pulse train. Each rectifier, or each group of simultaneously ignited rectifiers in the invertor, has a delay circuit (12a, 13a) for derivation of ignition pulses from the control unit (4) pulses and the switching pulses. The delay circuit includes a sawtooth waveform generator (12a), a threshold valve detector (13a) and an impulse shaper (4a).
Patent DE-2525932-A1 (DE)
Title: Swimming mitten or webbed glove increasing size of hand - designed simultaneously to create buoyancy and power of propulsion
Inventor: HOFFMANN MATHIAS
IPC: A63B31/04
Filed: 1975-06-11
Abstract: A swimming glove increasing the effective size of the hand pref consists of an oval panel (10) with a pocket (11) for insertion of the fingers (8), a wrist strap (12) at the rear end and a clasp (13). The pocket for the fingers may be disposed on either the upper of lower surface of the oval panel. A thumb loop (15) may also be provided on the panel, and the panel may be bendable in the region (14) at the base of the fingers. The glove is pref made of polymetric material eg rubber or plastic, and may be reinforced with fibre, fabric or wire inlays.
Patent DE-2533910-A1 (DE)
Title: Water heater of through flow type - has water flow safety device with membrane type valve and housing
Inventor: KEPPEL ERNST
IPC: F23N1/08
Filed: 1975-07-26
Abstract: Through flow type water heater, e.g. gas geyser, having a valve controlled burner heat exchanger and water flow safety device. The safety device is constructed from a membrane with an adjuster (22, 28, 30) mounted in a membrane chamber (19, 20) with a surrounding jacket (30) having an internal cut out section (46, 58, 59). The jacket (30) fits an aperture (26) in the water flow safety device (18) housing (17), and a valve (32) formed from a plate (35) which is contacted by a stop (37) is mounted between the stop (37) and the cut out aperture (26). The valve (32) operates counter to the force exerted by a return spring (31).
Patent DE-2534113-A1 (DE)
Title: Metal coating of controlled porosity and thickness - applied to metal substrate, esp. for use as human heart valve prosthesis
Inventor: KAFESJIAN RALPH RAFFIE
IPC: B22F7/00
Filed: 1975-07-30
Abstract: The substrate is coated with adhesive on those zones where coating is required, and metal powder is deposited on the adhesive. This is followed by sintering to bond metals and burn off the adhesive, leaving interconnected voids round metal particles. The adhesive is pref. applied by a brush followed by the metal powder, the surplus powder being blown off by a gas so only a single layer of particles is formed. Used esp. for a human heart valve prosthesis, where body tissue can grow into the interconnecting pores. This reduces the possibility of thrombosis occurring in the year after implantation of the prosthesis.
Patent DE-2535291-A1 (DE)
Title: Mowing machine towed by tractor - has floating coupling and hydraulic lifting system for cutter beam with bladed drums
Inventor: KRONE BERNARD
IPC: A01D34/86
Filed: 1975-08-07
Abstract: The moving machine can be attached to the side of a tractor and towed. Mowing cutters (2) are attached to a mower beam (1) with the free ends of the towing bars (20, 21) connected by floating coupling (22). The coupling (22) operates in conjunction with an abutment (23) on the intermediate frame (5), such that the mower beams (1) moves to a retracted, raised position when the hydraulic system is actuated. The cutters n2) consists of contra-rotating drums (7) with a ring collar (10) and blades (9). The cutter beam (1) is hinged (12) to another strut (4) connected to the tractor chassis.
Patent DE-2537784-A1 (DE)
Title: Carburettor for rotary piston engines - has separate air fuel and air only throttles connected by cam plate
Inventor: KONO TOSHIYUKI
IPC: F02M13/04
Filed: 1975-08-25
Abstract: The engine is of epitrochoid design, provided with a trailing and a leading spark plug as well as a separate air-only intake, opened and closed by the rotor to give a stratified charge. The throttle valve to the air only intake is connected to the air fuel throttle valve by a cam plate (42) and follower (44). The cam profile is designed to give an air flow ratio between the first and second feed system of 1:1 and 1:2. The first feed system produces an air fuel ratio of between 5 and 10. The cam plate (42) may be fitted to either the first or the second throttle valve shaft (41, 43) and actuated from a manual control (48).
Patent DE-2541437-A1 (DE)
Title: Temporary optical memory with semiconductor film - between series of parallel conductors giving crossing points, used as page composer
Inventor: BONNET DIETER DR
IPC: G11C13/04
Filed: 1975-09-17
Abstract: The memory for which the optical properties can be changed according to the point information to be stored, uses a system of crossed conductors on the semiconductor element (I), which are interconnected by a diode and an ohmic resistance in series at each crossing point. Point heating of (I) occurs on regulating the ohmic resistance, so that the absorption edge of the (I) material is shifted there. (I) is in the form of a thin film evapd. onto a transparent substrate. It consists of a II-VI material and has parallel conductors on both sides, so that those on one side cross those on the other. The specific resistance of the (I) layer increases perpendicular to the substrate, so that (I) takes over the function of the diode and associated ohmic resistance in the region of the crossing points. Used as 'page composer' for transferring information from magnetic tapes to holograms. The memory can be made more cheaply than usual, since thin polycrystalline doped films of II-VI semiconductors are used instead of a CdS monocrystal and separate diodes at the crossing points are omitted.
Patent DE-2543417-A1 (DE)
Title: Automatic colour spraying installation - has spray pattern with main spray jet mounted on chamber near moving strand of material
Inventor: BLUECHER HUBERT VON
IPC: B05B13/04
Filed: 1975-09-29
Abstract: The automatic spray installation is for use in colour spraying of various patterns onto moving material strands, using spray nozzles which are mounted lateral to the moving material strip. They are moved by power driven spindles. The spray nozzles are grouped into the appropriate pattern which is to be sprayed onto the moving material and mounted in a movable spray pattern grid. At least one main spray jet is provided for each pattern grouping and is mounted within a chamber to which the pattern group is then fixed.
Patent DE-2545422-A1 (DE)
Title: Quartz alarm clock with analogue time display - has multivibrator circuit controlling periodic switching of alarm source
Inventor: JAECKLE REINHARD
IPC: G04G13/02
Filed: 1975-10-10
Abstract: The alarm clock has a quartz-oscillator, supplying pulses to a frequency divider chain, connected to an electromechanical drive for the clock mechanism, to operate an analogue time display. The clock also has a mechanical alarm switch (46, 48) and a multivibrator circuit, for periodically switching the alarm source ON and OFF. The multivibrator circuit is brought into operation upon operation of the alarm switch, so that the alarm source is initially operated on half period after operation of the alarm switch. A second bistable multi-vibrator circuit for switching the alarm source ON and OFF is controlled by the alarm switch and the manual switch for turning OFF the alarm.
Patent DE-2549334-A1 (DE)
Title: Stripping insulation from electric cable by using adhesive - providing clean cut to allow insertion in narrow passage or sleeve
Inventor: HALBACH SEBULON ING GRAD
IPC: H02G1/12
Filed: 1975-11-04
Abstract: Method of stripping the insulation which is obtd. by braiding, winding, etc. is carried out by spreading a rapid-setting adhesive layer over the periphery of a section of the insulation which remains at least partially on the cable at the point or immediately adjacent to the desired point of cutting. The insulation is then stripped at this point by means of a cutting device. Where the cable has a sheath, this is removed at the same time as the insulation. The adhesive used pref. has a viscosity of only a few cP, is based on cyanoacrylate, and is applied drop by drop to control metering of the adhesive. The method requires extremely little time, and provides a firm clean cut in the insulation which does not project and which can therefore be inerted in narrow passages or sleeves for protection against bending of the apparatus.
Patent DE-2554984-A1 (DE)
Title: Small precast concrete units mfg. appts. - has two stage compaction with concrete added between stages
IPC: B28B3/10
Filed: 1975-12-06
Abstract: The process is for the mfr. of small precast concrete units with high strength characteristics. The units are cast with their axis of revolution vertical and in multiple mould. A controlled two stage compaction from above is deployed, with additional concrete added between stages. Initially a specified quantity of fresh concrete is placed in the mould and subjected to a light compaction by a plunger which drops vertically into the mould. The specified quantity of additional fresh concrete is then placed, and the plunger again descends to effect final vibratory compaction.