baber/WOPTO huggingface dataset:
Patent DE-2530169-A1 (DE)
Title: Amplifier with sixty DB dynamic range - despite high cutoff and precise logarithmic relationship of gain and control volts uses transistor differential pair
Inventor: HANDL JOSEF
IPC: G06G7/24
Filed: 1975-07-05
Abstract: The amplifier has a dynamic range of 60dB despite its high cutoff frequency of greater than e.g. 10 MNz and despite having only a 0.1 dB variation in the logarithmic relationship between gain and control voltage. Two transistors are connected as a differential pair with the gain control voltage applied to one of their bases and the output signal taken from the other's collector. The input current (13) has a second current (14) added to it. This second current is proportional to the output current (12) and is added to the input current by a current reversing stage (T4, T5). A component proportional to the input voltage (Ue) is added to the control voltage (Us+).
Patent DE-2536747-A1 (DE)
Title: Surface debris removal machine for road repair work - has screw conveyor positioned between wheels of vehicle and behind cutting roller
Inventor: WIRTGEN REINHARD
IPC: E01H1/04
Filed: 1975-08-18
Abstract: Cleaning machine for road repair work is used to remove loose material from the road surface by employing screw conveyor (14) whose axis runs parallel to the surface. Each screw has a row of plastic brushes (16) following the course of the spiral with bristles (18) projecting beyond the inside dia. of the screw. The bristles have a rectangular cross-section and their cross-sectional axes run parallel or approx. parallel to the conveyor surface (17) of the screw. The bristles are made of steel and are attached individually near to the screw core. The screw conveyors are located between the wheel axles of the cleaning vehicle and e.g. behind a surface cutting roller.
Patent DE-2537506-A1 (DE)
Title: Bladder outlet valve for incontinent people - has magnet cone embedded in magnet ring seat with powerful external opening magnet
Inventor: HERTEL ELMAR DR
IPC: A61F2/00
Filed: 1975-08-22
Abstract: The bladder outlet valve is magnetically controlled for incontinent people. The valve seat (2) is implanted inside the bladder (1) near the mouth of the urethra (3) and is rigidly fixed to the inner wall of the bladder. A spherical, conical or leaf shaped valve body (4) rests on the valve seat (2) and contains a permanent or soft magnet (5) attracted to at least one other ring magnet (b) which is embedded in the valve seat (2), keeping the valve closed. A very strong external magnet (7) is used to open the valve. The permanent magnetic material used ahas a specific energy value of at least 100 mw/cm3 and a retentivity of at least 4000 A/cm: The bladder valve involves insertion of only a minimum of foreign material directly inside the bladder and the valve seat can be made e.g. of tissue-compatible silicone.
Patent DE-2538876-A1 (DE)
Title: Two-station moulding machine for boxless sand moulds mfr. - with turnover for easy core insertion
Inventor: GEIGER WERNER
IPC: B22C11/10
Filed: 1975-09-02
Abstract: Machine for mfg. foundry moulds, using two units, each provided with a sand filling and compacting station, and a pattern holder, for the simultaneous mfr. of two separate parts of a mould; each unit is also provided with a device carrying pivot arms which pivot round a vertical axis in a horizontal plane, the arms carrying the moulding frames which can be rotated 180 degrees round a horizontal axis by the arms, to turn the drag upside down; the arms carry the two moulds to an assembly station where one mould is aligned above the other on a transport device. The novelty is that at least three pivot arms are provided for each unit, the arms being equispaced and carrying moulding frames which can be rotated 180 degrees round a horizontal axis and be moved independently up and down. The machine is pref. used for mfg. boxless moulds. Provides simultaneous mfr. of a cope and drag with easy core insertion due to the 180 degrees rotation or the mfr. of a mould consisting of several sections.
Patent DE-2539451-A1 (DE)
Inventor: WUST KARL-ERNST DIPL ING
IPC: H02H3/42
Filed: 1975-09-04
Abstract: In the case of the power relay, a measurement voltage which is proportional to current and a measurement voltage which is proportional to voltage are produced with the aid of electronically fault-compensating converters (5, 6, 7 and 21, 22, 23 respectively). The two measurement voltages are supplied to a TDM-multiplier (18, 19, 20) in order to form the products of the instantaneous values of current and voltage. The output voltage of the multiplier (18, 19, 20) is supplied, after smoothing in a smoothing stage (33), via a range setting device (34) to a threshold value switch (35). A display and/or switching device (36, 37) is connected to the outlet of this threshold value switch. The power relay can be constructed, in particular, as a multi-phase power relay. <IMAGE>
Patent DE-2543942-A1 (DE)
Title: Resin extn., from candelilla wax - with chlorinated hydrocarbons, esters or aromatic hydrocarbons, for use in cleansers and inks
Inventor: BROTZ WALTER DIPL CHEM DR
IPC: C11B11/00
Filed: 1975-10-02
Abstract: Modified candelilla was contg. 20 wt.% residual resin is prepd. by de-resinifying commercially available crude candelilla wax. De-resinification takes place by extn. using either (i) a -1-2C chlorinated aliphatic hydrocarbon liquid at 20 degrees C, or (ii) an ester of a satd. 1-3C aliphatic monocarboxylic acid and a 1-4C monoalcohol or (iii) a 6-8C aromatic hydrocarbon. De-resinified wax prod. is used for prepn. of aq. cleaner emulsions, solvent-contg. cleanser pastes, e.g., for shoe and floor cleaning, and carbon paper ink compsns. Opt. de-resinffield candelilla wax can be used as lubricant in PVC processing. Wax properties are improved, dirt uptake of wax film is prevented. Intrinsic gloss of emulsion is increased, pastes are easily formed and C absorption is increased. In an example, resin content of candelilla wax was reduced from 28 wt. % to 10.4 wt. % by 10 mins. extn. with CH2Cl2 at 15 degrees C.
Patent DE-2544624-A1 (DE)
Title: Rounded, mitred corner for plastic-veneered box - uses board cut with V-groove with profile of circular octants and mating profiles on other side
Inventor: RICHTER RUDOLF
IPC: B27F1/00
Filed: 1975-10-06
Abstract: The method produces rounded mitred corners for cabinets, etc. The face side of the board is first cut with a V-groove (2), whose sides (2a, 2b) are shaped to the profile of the finished rounded corner - in section they are, e.g. circular octants, the halves of a finished quadrant. The plastic veneer is then laid over, and stuck down to the flat parts of the board, stretching over the groove (2) but not stuck down there. (It will later stretch tight round the finished joint). The other side of the board is now cut with the two mating profiles (4, 5) which will come together to form the mitred joint; also, at this stage, the board (but not the over-lying veneer) is cut through (at 3). Glue is applied to the mating profiles, and the board bent round to form the finished joint.
Patent DE-2546446-A1 (DE)
Inventor: NODA KEN-ICHI
IPC: H04J3/00
Filed: 1975-10-16
Abstract: 1509753 Multiplex system NIPPON TELEGRAPH & TELEPHONE PUBLIC CORP 15 Oct 1975 [16 Oct 1974] 42120/75 Heading H4M In a multiplex system, wherein input speech channels are gated to produce pulse amplitude modulation signals which are digitally encoded to produce a p.c.m.t.d.m. signal for transmission, the signal after transmission being de-multiplexed in the inverse manner, there are provided analyzer, and synthesizer circuits (221-221), Fig. 1 (not shown), (321-321), Fig. 2 (not shown), which are used to parametrize the p.c.m.t.d.m. signals applied thereto in a manner dependent upon the speech characteristics, in particular to extract a partial autocorrelation coefficient defined in the Specification. It is asserted that by so parametrizing the p.c.m.t.d.m. signals a multiplex system normally adapted to handle, for example m channels, can, by use of the analyzer and synthesizer, handle a plurality, I groups each of m channels. Speech analyzer, Figs. 3, 4 (not shown).-Arrangements, utilizing memories, and channel selectors and distributers are disclosed for extracting the partial auto-correlation coefficient. Speech synthesizer, Figs. 5-9 (not shown).-Arrangements; controlled by signals (S 1 -S 3 , S 41 -S 4n ) dependent upon the speech characteristics representing the parametrization; and comprising pulse and noise generators, multipliers, digital filters, and temporary memories, operate in serial or parallel manner to reconstitute the p.c.m.t.d.m. signals for decoding to p.a.m. form and passage via low-pass filters to provide the analogue output signals.
Patent DE-2553405-A1 (DE)
Title: Photographic objective lens esp. for microfilm reader - has four lenses with aperture of 1 to 2.8 and picture angle of about forty deg.
Inventor: LAUTENBACHER HANS
IPC: G02B9/34
Filed: 1975-11-27
Abstract: The four lens photographic objective has a high optical power and is especially suitable for a microfilm reader with an aperture ratio of at least 1 to 2.8 and a picture view angle of about 38 deg.. The first lens (L1) is plano-conves, the second (L2) convexo-concave, the third (L3) is bi-concave and the fourth (L4) is boconcaves. In a specific example the radii of curvature of the eight surfaces, for = 100, are + 58.861, infinity, +45.185, +55.847, - 158.333, +37.503, +130.183, -66.357. The lens thicknesses and (spacings) are 10.15, (1.02), 9.65, (7.41), 2.54(15.94), 10.97). The refractive indices and (Abb e numbers) are 1.65160 (58.52), 1.62041 (60.33), 1.69895 (30.07), 1.69249 (58.56).
Patent DE-2554550-A1 (DE)
Title: Air-core coil with concentric intersecting windings - with separate cross-piece at points of intersection
Inventor: BAIER MANFRED
IPC: H01F30/08
Filed: 1975-12-04
Abstract: The cross-piece pref. comprises flat web at each end of which is connecting member for the wires, the connecting members are square and each have an opening for receiving an end of a wire. The cross-section of the flat web is pref. as large as that of the wire at least. The material of the cross-piece may be the same as that of the wires, and the ends of the wires may be welded to the cross-piece. An insulating layer may be inserted between the wire and the cross-piece. Spacer strips may be provided for spacing the coils. The air-core coil may be immersed in epoxy resin for impregnation or adhesion. Winding of the coil is facilitated, and the windings no longer need to be wound simultaneously.
Patent DE-2557584-A1 (DE)
Title: Hydraulic or pneumatic double blade guillotine - has blades mounted one above other with work tables driven upward by cylinder pressure
Inventor: FICHTNER WALTER
IPC: B23D15/00
Filed: 1975-12-20
Abstract: Two guillotine blades have inclined cutting edges meeting at the machine centre. The sheet workpiece is retained on the table and transferred between strokes to the alternative cutting edge of the other blade. Two beams, one above the other, carry upper and lower fixed blades and have connected pneumatic or hydraulic driving cylinders. The moving beams are guided to descend or rise simultaneously, being driven by pistons (46) attached to a yoke (43). Positioning stops at each blade pair (35, 41) set the workpiece. The cutting edges are inclined to a centre apex on each blade at an angle of up to 6 deg. to the work.
Patent DE-2558510-A1 (DE)
Title: Off peak storage hot water central heating - has hot water vessels loaded in stages under thermostatic control
Inventor: KOHNKE HANS JUERGEN DIPL ING
IPC: F24D11/00
Filed: 1975-12-24
Abstract: A heating unit containing off peak heaters and a heat pump serves space heaters and a domestic water calorifier. There are three hot water storage vessels between the heating unit and the space heaters. The return from the space heating enters the last one from which it flows in sequence to the others. The first vessel is connected to the flow by a solenoid valve and the second vessel is connected to the flow by a second solenoid valve. The solenoid valves are controlled by a thermostat in the first vessel so that only one at a time is open. This ensures that efficient use is made of residual hot water remaining in the first vessel after a heating period.
Patent DE-2602215-A1 (DE)
Title: Sliced bread mfr. - by inserting grid into dough in baking tin short of bottom, and restricting temp. after aroma formation
Inventor: LAMMERS ALBERT
IPC: A21D8/00
Filed: 1976-01-22
Abstract: After the aroma has been produced by the baking process, the temp. is not allowed to rise above 95 degrees C (85 degrees C). The grid is pressed into the dough not quite to the bottom of the baking tin so that a crust (10 mm thick) joins the baked slices in the finished bread. The whole is sealed on leaving the baking oven. The sliced bread thus produced can be packed oven fresh without sterilisation or any mould preventative. Taste and aroma are thus not impaired.
Patent DE-2606899-A1 (DE)
Title: Road salt or gravel scattering device - has valve dividing pressure medium into constant and residual flows
Inventor: ZIRPS WILHELM
IPC: G05D7/03
Filed: 1976-02-20
Abstract: The regulating device is used in connection with a vehicle-mounted appliance for scattering bulk materials, such as salt or gravel, on a road, where the rate of distribution depends on vehicle speed, the volume being changeable. The vehicle engine drives an adjustable pump, supplying pressure medium to hydro motors driving a scatter tray and dosing appliance respectively. The flow of pressure medium is divided, in a regulating valve into a constant flow and a residual flow. The former flows, via a pressure scale and adjustable throttle combining to form a control device, to a hydro motor for scatter tray drive. This together with a pressure medium flow delivered by a second pump dependent on vehicle speed, serves to drive the dosing appliance and influences the supply volume of the adjustable pump.
Patent DE-2611861-A1 (DE)
Title: Codeinone prepn. from thebaine - by reacting with a halohydric acid in anhydrous medium in the presence of a catalyst, e.g. iodine
Inventor: CALVO FERNANDO
IPC: C07D489/02
Filed: 1976-03-20
Abstract: Codeinone (I) is prepd. from thebaine (II) by reacting it with a halohydric acid in an anti-medium in the presence of a catalyst at >=10 degrees C, hydrolysing in an alkaline medium and extracting (I). Yields of up to 95% are obtd. Pref. (II) dissolved in CH2Cl2 is treated, in the presence of I2, with HBr in di-n-butyl ether, hydrolysing in an alkaline medium contg. NaHCO3, extracting with CH2Cl2 and removing the solvent to obtain (I).
Patent DE-2623888-A1 (DE)
Title: Switching control for linear induction drive - has fixed magnetic sections on track and electromagnets at switching points
Inventor: KAGISCHKE WOLFGANG
IPC: H02K41/03
Filed: 1976-05-25
Abstract: The lightweight linear drive motor has two sets of laminations coupled by the same DC coils (1), into a common motor. The ends of the laminations are open and the magnetic circuits are completed by fixed magnetic elements (5) forming part of the track. The switching points have the fixed magnetic sections replaced by controlled electromagnets. The use of fixed pole pieces, and trackside electro-magnets reduces the weight of the drive unit as well as reducing the eddy currents and lowering the control current.
Patent DE-2628927-A1 (DE)
Title: Vibratory garden rake head or hoe - carries blade on wheeled frame with household electric drill rotating out of balance weight
Inventor: JENSEN JENS ALFRED
IPC: A01B1/00
Filed: 1976-06-28
Abstract: Vibrating the tool keeps it clean when the soil is sticky after rain, and helps to shake the soil from the weeks it uproots; in dry conditions the vibration breaks up clods and frees stones from caked-on lumps of earth. The operating head (rake or hoe) is carried at the farther end of a rod whose near end is within the gardener's reach, and which supports the vibratory mechanism. This may be an electric vibrator or an out-of-balance weight rotated by a household electric drill. The apparatus is borne on a wheeled frame to which the steering handle is attached. Elastic supports are fitted under this handle, which also controls the depth of cultivation.
Patent DE-2631592-A1 (DE)
Inventor: LEWANDOWSKY REINER
IPC: G01G11/18
Filed: 1976-07-14
Abstract: The proportioning or conveyor belt weigher is connected to a load pickup (10) and to a speed pickup (15) which outputs a tachometer frequency (ft) proportional to the belt speed to a multiplying device (14, 16). The latter exhibits a pulse stage (16), connected to the speed pickup (15), which supplies pulses with the tachometer frequency (ft) and with fixed pulse length. The pulses are used to key the load-proportional voltage (Ue) supplied by the load pickup (10) in a switching stage (14) of the multiplying device (14, 16), which produces a voltage proportional to the product of tachometer frequency (ft) and load-proportional voltage (Ue). The multiplying device (14, 16) is followed by a voltage/frequency converter (24, 23, 20, 21, 22), also having a pulse stage (22). The two pulse stages (16, 22) are connected to the output of an oscillator (17) which predetermines the length of the pulses generated in each case. Thus, a measurement value for the actual gravimetric conveying capacity of the belt is generated in the form of a frequency (fi), accurately, constant in time, operationally reliable and at little cost. <IMAGE>
Patent DE-2636024-A1 (DE)
Title: Lobe gear type compressor or expansion engine - has two similar rotor sections of different sizes linked together
Inventor: MEYER HANS
IPC: F01C1/12
Filed: 1976-08-11
Abstract: The machine has two similar sections (1a, 1b) which each contain two identical rotors with recesses and lobes meshing with each other as the two rotors revolve in opposite directions. The rotor lobes seal against a stator casing and define working volumes which carry fluid round from inlet to discharge. One of the sections (1b) is larger than the other (1a) and there is a sealed volume (A1) between them. Both pairs of rotors are driven in the same direction of rotation by belts or gears between them. In one direction of rotation the machine works as a compressor and in the other direction as an expansion engine. The compression ratio can be varied by changing the relative speeds of the two sections.
Patent DE-2639735-A1 (DE)
Title: Plastics plain bearing with isostatically deposited fibres - has flat plate with recesses for collection of penetrating particles
IPC: F16C33/20
Filed: 1976-09-03
Abstract: The plain bearing is of plastic, and for use with rotary or sliding machine parts. It is formed by a flat bearing plate (1), in which there are recesses joined to each other, typically grooves (2) in a diamond pattern. The recesses can be separated from the plate edges by relatively narrow ribs, whose height is the same as that of the edges. In them there can be an isostatically deposited fibre bed. For rotary components, the plate can be rolled into a cylindrical shape with grooves in it. The design withstands heavy loads without overheating, and the grooves tend to collect any foreign bodies penetrating inside the bearing.
Patent DE-2651052-A1 (DE)
Title: Power driven frame saw - has bow bar guided on frame and crank gear driven from motor with console guided work table
IPC: B23D49/06
Filed: 1976-11-09
Abstract: The power saw has a bow (4) movable in a vertical direction to the saw frame (2), and a workpiece table (3) movable horizontally to the frame (2). The bow (4) is guided on the frame (2) by bars (13, 14) and is driven via a crank gear (6) from a motor (7) fitted on the saw frame. The workpiece table (3) is guided on consoles (27, 28) arranged laterally on the frame (3) and carries toothed rods (33, 34) in which gearwheels rotatably fitted on the consoles (27, 28) engage. The toothed rods (33, 34) also serve as guides for the table (3). Auxiliary tools can be used in conjunction with the saw and are fitted in unthreaded and threaded holes on the workpiece table.
Patent DE-2656326-A1 (DE)
Title: Winding tube body for yarns, threads - has elastically displaceable collar easily manipulated for clamping free yarn end
IPC: B65H75/28
Filed: 1976-12-13
Abstract: A winding tube for different types of textile yarns, wire thrreads and similar articles, has an annular groove on its periphery to receive the end of the thread. One side of the groove is delimited by a section which can be displaced axially. This is attached to the body of the tube and can close the groove towards the outside, to form a slit in which the thread is clamped. This section is annular and conical and can be set, by displacing it axially across a dead point, in a clamping position close to the opposite side of the groove or in an open position away from it. The body of the winding tube and the displaceable annular section are made in a single piece, esp., of thermoplastic material. The tube is very easily produced and holds the yarn securely without excessive press. When opened, the groove remains open without any outside effort being necessary.
Patent DE-2657377-A1 (DE)
Title: Wet oxidative degradation of organic substances - in effluents in which a redox potential is attained by addn. of iron and phosphorus in trace quantities
Inventor: HORAK OTTO DIPL ING
IPC: C02F1/72
Filed: 1976-12-17
Abstract: In the parent patent, the wet oxidative degradation of org. impurities in effluents was described by oxidising at a redox potential of 300-600 mV (measured with a Pt electrode against a Ag/AgCl electrode), at 80-250 degrees C and 3-200 bars with O2(-contg. gases). The improvement in this application lies in adjusting the redox potential by adding 300-500 ppm Fe degrees, Fe++ and/or Fe+++ as well as 1-10 ppm (pref. 4-7 ppm) P (as PO4---).
Patent DE-2700637-A1 (DE)
Title: Vibration absorbent intermediate metal flange - has one metal ring and rubber ring of same internal dia.
Inventor: MIEDERHOFF HELMUT
IPC: F04B17/00
Filed: 1977-01-08
Abstract: The vibration-absorbent intermediate metal flange is particularly for the flange-mounting of a pump on a driving motor, having two metal rings vulcanised to opposite sides of a rubber one. One metal ring (12) has on the outer periphery a centring ring (16) protruding axially, while its internal dia. is larger than that of the second metal ring (9), and equal to the internal dia. of the rubber ring (11). The first metal ring and the rubber ring have recesses emanating from their inner edges in the radial direction outwards, and in line with each other. These recesses can be at intervals of 90 deg, and in the form of elongated holes open on the inside, their major axes extending in the radial direction.
Patent DE-2700804-A1 (DE)
Title: Electronic clock with analogue display - has twelve display element matrix groupings to selectively energise sixty display elements
IPC: G04G9/04
Filed: 1977-01-11
Abstract: An electronic clock with an analogue display has sixty display elements lying on a circle shaving hours, minutes, and seconds. Each twelve display elements are connected to a five column display matrix so that each one is connected to one of the first twelve outputs of a sixteen output decoder and to the emitters of the five transistors with collectors at positive supply voltage. The transistor bases are connected to the first five outputs of a decimal decoder via inverters. Timing pulses are counted in counters whose outputs are evaluated by logic and decoder circuits controlling display illumination.