baber/WOPTO huggingface dataset:
Patent DE-2036120-A1 (DE)
Title: Production of wool wax alcohols and acids - from wool grease
IPC: C07C27/02
Filed: 1970-07-21
Abstract: Wool grease is saponified with caustic alkali in a co-solvent mixture of isopropanol and water. Wool wax alcohols are extracted from the saponified mixture using hexane or heptane as solvent and the extract is washed first with dilute KOH and then with water. Extraction and washing are best achieved in a continuous countercurrent rotary disc extraction column. The solvent is evaporated from the purified extract to recover the wool wax alcohols. The raffinate is acidified and stripped free of the solvent fraction in a continuous stripper still to recover fatty acids which are water-washed and dried.
Patent DE-2036520-A1 (DE)
Title: Dye padding process - squeezing of excess liquor by passing between inflatable tubes
IPC: D06B15/08
Filed: 1970-07-23
Abstract: After passing through a padding bath, the pick-up of soln. is adjusted by the impregnated material being squeezed between inflated tubes. The two parallel tubes are fixed and non-rotatable, and are covered with a slippery material, e.g. Teflon. Pressure of the gas and/or liquid in the tubes may be regulated by a pump. The method is suitable for textile materials including yarns, particularly filament yarns.
Patent DE-2055657-A1 (DE)
Title: Metal bonding to ceramics - using metal alloyed with cpd reducibly reactive with oxide ceramic
IPC: C04B41/88
Filed: 1970-11-12
Abstract: Surface of oxide ceramic part is prepared by grinding and/or polishing at positions to be joined with metal. Base metal alloyed with a material (I) which is capable of reacting with oxide ceramic by reduction at a temp. below oxide ceramic sintering temp. is pressed against oxide ceramic surface and heated to a temp. below metal alloy melting temp. Heating time depends on content of (I) in metal alloy and is inversely proportional to (I). Pref. base metal is Cu and (I) is of li, while for BeO-ceramics, esp. Be is used as (I). Products are useful for electrical industry, esp. high frequency techniques, e.g. thermionic valves and magnetrons.
Patent DE-2103050-A1 (DE)
Title: Steel refining oxygen lance - with helical screening gas nozzles
IPC: C21C5/46
Filed: 1971-01-22
Abstract: Oxygen lance for use with steel making equipment comprises coaxial pipes for O, the coolant and the screening gas. The O-injection nozzles into the melt are at the bottom, whilst on its circumference above the bottom are slot shaped nozzles forming >=2 turns of a helix on the lance housing for the screening gas. Prefd. screening gas is air and the coolant employed is water. The air nozzles cool the lance surface thereby extending its service life.
Patent DE-2111666-A1 (DE)
Title: Palladate-covered titanium anode - for electrochemical processes
Inventor: HOPPE RUDOLF PROF DR
IPC: C25B11/04
Filed: 1971-03-11
Abstract: Corrosion-resistant and dimensionally stable anodes for electrochemical processes, partic. for alkali chloride amalgam cells, are obtd. by covering Ti sheets with a layer of crystalline palladate chosen from CaPd3O4, SrPd3O4 and/or NaPd3O4, prepd. separately or formed in situ, such that the layer contains >=50% (pref >70%) palladate, the remainder being binders and/or adhesives and/or stabilisers, the palladate content being 2-4 mg/cm2.
Patent DE-2144932-A1 (DE)
Title: Floatation plant - inverted conical hollow rotor with external undulations improves air dispersion
Inventor: MESCHTSCHERJAKOW NIKOLAJ
IPC: B03D1/16
Filed: 1971-09-08
Abstract: A flotation plant comprising a square chamber with charging and discharging device and a rotor with associated drive for the dispersion and mixing of air within a suspension, whereby the rotor of inverted conical, semispherical or multifaced pyramidal shape, is provided with undulations on its external surfaces. The hollow drive shaft supplies air to the rotor, from which this air escapes via opening or annulus in its lower section. The device ensures improved air dispersion of 2.5 to 3.0 m3/min per 1 m3 chamber volume, whereby the circumferential speed of the rotor is 7M3/sec. Lower energy consumption compared with other known methods is also claimed.
Patent DE-2155646-A1 (DE)
Title: Plastic shoes - made by selective electrostatic deposition of complementary materials into an integral structure
Inventor: DICKS PETER DEREK JOHN
IPC: A43B23/02
Filed: 1971-11-09
Abstract: Shoe uppers or vamps made by building coatings by electrostatic deposition of plastic materials in a cavity which can be temporarily partially covered or screened to produce zones of varying thickness, pref. after laying a uniform initial coating. Pref. the mould forms a non planar fringe or skirt which subsequently provides anchorage in a moulded shoe sole. different polymers may be deposited successively, e.g. to provide a scuffproof, detailed surface. The toe cap can be built up for greater stiffness/strength than the instep or an integral structure, etc.
Patent DE-2166028-A1 (DE)
Title: Ferric chloride soln - for hydrogen chloride prodn by oxidising residual liquor from steel pickling
Inventor: KOVACS GEZA LOUIS
IPC: C01G49/10
Filed: 1971-07-20
Abstract: Ferric chloride is prepd. in the form of an aqs. soln. by intimately mixing an aqs. soln. of ferrous chloride with free oxygen, either (a) at 80 degrees C and a superatmospheric pressure, or (b) at an elevated temp. in the presence of a promoter contg. ammonium, Cr, Co, Cu, Mn, Ni and/or Zn ions. The process is used to convert FeCl2 in the residual liquor from steel pickling with HCl soln. into FeCl3. The FeCl3 soln. can be thermally decomposed to give gaseous HCl which is recovered in the form of hydrochloric acid.
Patent DE-2166351-A1 (DE)
Title: Double shaft,forced circulation mixer - having a self supporting mixing vessel
IPC: B01F15/00
Filed: 1971-08-20
Abstract: Double shaft, forced circulation mixer of the known type having driven, interconnected, mixing mechanisms installed inside the mixing vessel and provided with shafts and mixing arms, a discharge slide valve being provided on the underside of the mixing vessel, with the improvement whereby the letter is designed as a self-supporting unit supporting the mixing mechanisms sealed from the exterior and their housings, the mixer drive fixed on the shafts carrying the mixing arms and the cylindrical discharge slide valve, independently of the frame.
Patent DE-2216528-A1 (DE)
Title: Weft wire presentation - using combined clamp/cutter which is grasped by shuttle
Inventor: BORISCH FRED
IPC: D03D47/00
Filed: 1972-04-06
Abstract: The wire, to be used as a weft when weaving a metallic mesh fabric, is passed over a roller and held by clamping pads, so that the end is in the vertical plane to be grasped by the hook of the shuttle to be carried across the loom. When inserted, a cutting unit is swung across through 90 degrees to sever the weft when the shed has closed so that the weft is held at the correct tension, and trimmed close to the fabric edge by the location of the unit.
Patent DE-2218603-A1 (DE)
Title: Cancerostatic cyanoacetic acid esters - (p-/bis-beta-chloroethyl) -amino/-phenylimino)-cyanoacetic acid esters
Inventor: SCHULZE WERNER DIPL CHEM DR
IPC: A61K31/275
Filed: 1972-04-17
Abstract: Cpds of formula (I): (where R = an opt substd. opt. satd. aliphatic residue) are prepd. by condensing esters of cyanoacetic acid with p-nitroso-N,N-bis-(beta-chloromethyl)-aniline in the presence of a basic catalyst pref. KOH, K2CO3 or piperidine, using the same alcohol to prepare the acetic ester as a solvent. Alternatively a hydroxyl-free solvent such as DMF, or an alcohol with which slow re-esterification takes place during reaction, and the product of which can be separated easily may be used.
Patent DE-2231038-A1 (DE)
Title: Intermittent friction contact drive - feeding strands of plastic or rubber for processing when standing still
Inventor: CROME SIEGFRIED
IPC: B65G13/073
Filed: 1972-06-24
Abstract: The drive system comprises pairs of transport rollers which friction lock onto opposite sides of the strand and working in opposite directions of rotation, these are coupled to an actuating element acting upon controls for the feed, coupling and opt. the processing system. Pref the actuating element is a shaft which can be driven, by the coupling, in both direction of rotation.
Patent DE-2232355-A1 (DE)
Title: Activated magnesia prodn - by calcination of granular magnesium hydroxide
Inventor: BRAUN OTTO DIPL CHEM DR
IPC: C01F5/08
Filed: 1972-07-01
Abstract: Activated magnesia with iodine index over 100 is obtd. (a) mixing water contg. Mg(OH)2 with recycled dry Mg(OH)2 of 0.3 mm particle size at a ratio of 2-4:1 and granulating the mixt. (b) drying the mixt. (c) sieving the mixt. into three fractions, (d) the coarse fraction of over 3 mm size is ground and the fine fraction obtd. is added to the fine fraction of (c) and recycled to stage (a), (e) the 3rd fraction of 0.2-20 mm, pref. 0.3-5 mm is calcined at 400-500 degrees C pref. 430-460 degrees C ina rotary kiln using 30 vol.% of the kiln capacity and max. 30 kg/h m2 heat capacity and in close contact with moist, cool air at a flow of 5-100 m3/h kg Mg(OH)2 for 5-40 pref. 5-25 min. Dust losses and calcining time are greatly reduced.
Patent DE-2232535-A1 (DE)
Title: Semiconductor device - for use in integrated circuits
Inventor: WALLIS GEORGE
IPC: H01L27/12
Filed: 1972-07-03
Abstract: Semiconductor device consists of a first semiconductor element contg. >=1 p-n junction; a second element comprising a semiconductive monocrystal and/or metal(s) having a m.pt. of >=600 degrees C, and an insulating material which separates and firmly binds together the two elements, and has a flow point of >=50% of the lowest m.pt. of the materials contained in either of the elements. Damages due to different thermal expansion of the materials are largely eliminated.
Patent DE-2305774-A1 (DE)
Title: Sinterable rare earth metal-cobalt pressed pieces - for magnets using amide wax as lubricating and protecting agent during production of the pieces
Inventor: DOMAZER GUENTER DIPL ING DR
IPC: B22F1/10
Filed: 1973-02-07
Abstract: Lubricating and protecting (against oxidn. or nitride formation) agent for the prodn. of sinterable pressed pieces for the manufacture of permanent magnets based on powdered rare earth and cobalt metals, or a powdered alloy of these metals, the rare earths being wholly or partly replaceable by their hydrides, consists of 1-3 wt.% based on metal or alloy, of amide wax.
Patent DE-2322340-A1 (DE)
Title: Computer controlled forging link line - comprises transfer device linked furnace, forging and edging presses
Inventor: KITA MASAAKI
IPC: B21J13/08
Filed: 1973-05-03
Abstract: Fully automatic press forging system comprises a preheating furnace, a single or multi die forging press and an edging press. The workpieces are transferred by a loading device from the furnace to the forging press. In this a turning-over device is provided for turning the workpieces over in the dies and a second of these transfers them to the edging press. End-of-operation signals from each working station are processed by a computer which coordinates the various operational steps of the system. The system results in high specific output from the various plant items and by reasons of its requiring no operators saves expensive guards on the various pieces of equipment.
Patent DE-2328796-A1 (DE)
Title: Easy-to read card index filing system - uses endless print-outs of data-processing systems as cards and avoids amending old cards when updating
Inventor: POLSTER HANS
IPC: B42F19/00
Filed: 1973-06-06
Abstract: The card index pocket has on one side an information reference field which is adapted to the screen of the print of the data processor and has free areas through which can be seen the information on the endless printout section. The card index pocket is closed at the lower edge and side edge and the upper corner is cut off with the inclined edges joined together and the print-out sections resting against these edges. The lower edge is fitted with a peripheral strip formed by welding the side walls and having cogged recesses, the spacing between which is adapted to corresponding shapes of an associated card index cabinet. When updating the information the old print-out is merely replaced by the new one which avoids error and the need for completing the old car.
Patent DE-2329543-A1 (DE)
Title: Dialkyl-malonic acids prepn. - by oxidizing 2,2-dialkyl-propan-3-al-1-ols or 2,2-dialkyl-1,3-propanediols with dinitrogen tetroxide
Inventor: HAMBSCH ERICH DIPL CHEM DR
IPC: C07C51/27
Filed: 1973-06-09
Abstract: Dialkyl-malonic acids are produced in high yields by oxidising 2,2-di(1-4C alkyl)-propan-3-al-l-ols (I) or 2,2-di(1-4C alkyl)-1,3-propanediols (II) with N2O4 (or No2) at 0-100 degrees C, the molar proportion of (I) to N2O4 being 1:1.5 to 1:4 and that of (II) to N2O4 being 1:2 to 1:6. The prods are useful for the prodn. of high-molecular polycondensates such as polyesters and polyamides. They are also useful as inters for pharmaceuticals, dyes and plant protection agents.
Patent DE-2332389-A1 (DE)
Title: Battery operated toy telephone - has buzzer with adjustable tone
Inventor: MUELLER-SEIDEL KARL-HEINZ
IPC: H04M1/03
Filed: 1973-06-26
Abstract: A toy telephone with battery microphone and receiver capsules and a buzzer as in patent 2105502 uses a common coil to energise the receiver and the buzzer membranes, and has an adjusting disc located between the buzzer diaphragm and its cover made up of wedge-shaped axial segments which can be rotated to exert a varying pressure and so control the buzzer sound.
Patent DE-2338981-A1 (DE)
Title: Laminated blank strip for making identity cards - contains preshaped opaque core with picture window
Inventor: HANNON DONALD F
IPC: A45C11/18
Filed: 1973-08-01
Abstract: The blank consists of a double outer cover of transparent plastic with inner thermoplastic surfaces. A preshaped opaque core with a cut-out window to accept a photograph or similar identifying element is provided together with a printed insert. With all parts in position heat and pressure are applied to the sandwich to bond the layers and edges together. The design simplifies and speeds the process of making sealed units which are difficult to tamper witn and which are light and durable in use.
Patent DE-2346160-A1 (DE)
Title: Bottom discharge arrgt. for cement silo - bearing for conveyor screw discharge arm incorporated under floor
IPC: B65G65/46
Filed: 1973-09-13
Abstract: A silo for clay, kaolin, etc. has a bottom discharge arrangement with a radial rotating arm incorporating a conveying screw which rotates about the central vertical axis of the silo, and discharges through an outlet through the base of the silo. This arm is attached to a sleeve with a conical closed top and which is supported on a flange arrangement flush with the base of the silo, mounted on a ball or roller bearing. The bearing is housed between races and under blocks which form a labyrinth seal under a cover plate between an inner flange of the sleeve and a concrete sealing flange, the whole bearing system being housed in only a part of the thickness of the silo base, and surrounding the discharge opening.
Patent DE-2348946-A1 (DE)
Title: Tubular cold conducting titanate resistor - with baked metallisation on inside and junctionless contact on outside, giving ease of mfr.
Inventor: THOMANN HELMUT DIPL CHEM DR RE
IPC: H01C1/14
Filed: 1973-09-28
Abstract: Cold conducting resistance with contacts on 2 opposite sides, one of which is junctionless, is tubular and has baked metallisation on the inside of the tube for contacting on titanate ceramic and junctionless contacting on the outside, of the conventional type for cold conductors. The wall of the tube is at least thick enough to give a junction resistance in the direction of flow less than that of the cold resistance for this wall thickness at the given operating voltage, the cold resistance value taken as the basis being that occurring at the operating voltage and this wall thickness with junctionless contacting on both opposite surfaces. The pref. materials are Ag or Au for the baked metallisation; and Cr, not 100 angstroms thick, followed by Ag or Au for the junctionless contacting. Used as temp.-dependent resistances and also in electric heating elements, esp. for heating streams of liqs. and gases, e.g. petrol, where over-heating must be avoided.
Patent DE-2351146-A1 (DE)
Title: Radio receiver with squelch control - has band-pass or high-pass filter, amplifier, noise rectifier and evaluation cct.
Inventor: KETTERLING HANS-PETER DIPL-ING
IPC: H03G3/34
Filed: 1973-10-11
Abstract: The receiver l.f. amplifier is switched off when there is no useful signal. The noise rectifier consists of two complementary peak rectifier stages connected in tandem. The first stage consists of a p-n-p transistor whose collector is connected to zero potential and the emitter through a resistor in parallel with a capacitor to a positive supply voltage. The second stage consists of an n-p-n transistor whose collector is connected to the supply voltage and emitter through a resistor in parallel with a capacitor to zero potential. The second transistor base is connected to the first transistor emitter, and the a.c. voltage is applied to the first transistor base. The d.c. voltage is collected from the second transistor emitter. The order of the peak rectifiers' connection can be reversed.
Patent DE-2358654-A1 (DE)
Title: Indicator for liquid refrigerant - has glass ball beneath sight glass, and indicators for moisture and acid content
Inventor: KLEMENS FRIEDRICH
IPC: F25B41/00
Filed: 1973-11-24
Abstract: Indicator for building-in to liq. ducts of refrigeration plants has a spherical glass ball held in a throughflow space beneath a disc-shaped sight glass, with refrigerant liq. flushing around it. Beneath the ball is an insert with a marking showing the state of filling of the plant, and as indicator for the state of the refrigerant. The ball is held in a cage which is inset together with a base insert in the housing. The cage is open below the sight glass, enabling the ball to be seen, and has an insertion trough for the unit(s) indicating the state of the refrigerant, which preferably are two semicircular discs, one indicating moisture content and the other acidity. The indication of state of refrigerant is made independent on the state of filling of plant.
Patent DE-2359884-A1 (DE)
Title: Resilient mounting for assembly tolerance - has weak part on switch component giving limited resistance over tolerance range
Inventor: AWAKOWICZ ERWIN
IPC: F16F1/42
Filed: 1973-11-30
Abstract: Esp. for a component to be assembled between upper and lower plates, e.g. dial switch for telephone set. The mounting comprises a rubber body of circular cross-section and having end portions with blind axial holes for receiving mounting pins of the component and the lower plate respectively. The body has a medial portion of larger diameter than the end portions, which medial portion is hollow and is provided around the interior with an annular notch effecting a locally weakened annulus. The width of the notch is so chosen that its sides do not close not withstanding variations within the tolerance in the distance between the upper and lower plates.
Patent DE-2360261-A1 (DE)
Title: Electric spot welding machine sp. for large light-alloy sheet - where small sec. loop reduces transformer size and cost
Inventor: GOEPFERT JOACHIM DIPL ING
IPC: B23K11/18
Filed: 1973-12-04
Abstract: The device uses a stationary welding transformer and an electrode holder which can adjust the vertical position of the electrode; both these units are mounted either above or below a work-table contg. a hole through which the adjustable electrode projects. The current loop formed by the sec. covers an area of max. 250 sq. cm. and the transformer has a max. nominal rating of 35 kVA. The material being welded can be moved all over the horizontal, rotary table which is pref. fitted with a large slot in which an operator can stand, and mounted on a pedestal contg. a foot-switch for the welding current. As an alternative, the transformer and the electrode holder can both be mounted on a piston working in a horizontal cylinder. The device is used for mfg. large letters in light-alloy or steel sheet with a luminescent finish, e.g. an "H", 2 m high and 15 cm deep for signs. The low losses resulting from the small sec. loop means that a 20-35 kVA transformer can be used instead of the 60-120 KvA required when the sec. covers a large area.
Patent DE-2404934-A1 (DE)
Title: Single-stage strand twisting equipment - has a tension control unit to give synchronised and selective stop/start actions
Inventor: AIMBINDER MARK B
IPC: D01H7/86
Filed: 1974-02-01
Abstract: The process to give a single-stage twisting action to two strands, to develop cord for fishing net and similar applications, has a control unit arranged between the yarn store unit, and the tension compensator below the twisting spindle to give a synchronised stopping and starting action to the operating components. The system gives a controlled stopping action and restarting operation, without bringing the entire equipment to a halt in the event of a stoppage.
Patent DE-2405381-A1 (DE)
Title: Self-holding mounting box for electric installations - has lip to bond with adhesive washer around hole in plaster board
Inventor: SCHATZ KLAUS
IPC: H02G3/12
Filed: 1974-02-05
Abstract: The self holding mounting box for housing electrical installations into plaster boards and similar wall panels or boards is circular and has a lip towards one end. The outermost side of this lip has reinforcing webs connecting it to the bulk of the box body. the innermost plane face of the lip is bonded to the wall board by a double sided adhesive washer. The holes for the cable are sited radially in walls of the box.
Patent DE-2410381-A1 (DE)
Title: Tension roller mounting bracket of pressed steel - has integral shaft for inner race of roller bearing
IPC: F16C13/00
Filed: 1974-03-05
Abstract: The bracket (1) is a steel pressing with a raised central area (2) to provide rigidity; a hole (3) for the pivot bolt and a guiding slot (4). A tubular projection (7) is pressed out of the bracket and its outer surface forms a support for the inner race of a ball bearing. The outer race of the bearing serves as the tension roller. A projection (6) is formed by cutting three sides of the slot (5) and bending the tag upwards, and serves as an anchorage for the belt tension spring. The bracket is particularly useful for tensioning the toothed belts of engine cam shaft drives.
Patent DE-2411891-A1 (DE)
Title: Electrically insulated pipe joint - has rubber or plastic layer clamped between flanges for high pressures
Inventor: WALZ GEORG
IPC: F16L25/03
Filed: 1974-03-12
Abstract: The pipe has a flange with the end face and bore lined with a layer of hard epoxy resin having low di-electric loss. The mating pipe has a flange which is provided with radial grooves for rubber O-rings. The joining ring which has a hard epoxy resin lining is welded at the joint to the flange to provide the required pressure tight joint, suitable for pressures up to 25 atmospheres. For pressures below 10 atmospheres a soft rubber lining can be used instead of epoxy resin which allows the joint to be made without the need for O-rings and grooves.
Patent DE-2423726-A1 (DE)
Title: CRT beam spot suppression circuit - voltage divider inserted between cathode and modulating electrode
Inventor: RIECHMANN WERNER
IPC: H04N3/20
Filed: 1974-05-16
Abstract: A C.R.T. receives a supply voltage from the secondary winding of a transformer and a rectifier, and the supply voltage is applied to the voltage divider, and a capacitor is connected to the rectifier and in parallel with a voltage divider part, so that the supply voltage drop fully blocks the picture tube. The capacitor is the reservoir capacitor of the supply voltage source, and is connected to frame through a diode at the voltage divider base.