baber/WOPTO huggingface dataset:
Patent DE-2126904-A1 (DE)
Title: Solvent extraction of solids - by percolation through solids bed across which pressure gradient is set up
IPC: B01D11/02
Filed: 1971-05-29
Abstract: In extracting raw materials from solids by percolating solvent through a bed of the particulate solid the solvent percolation is accelerated by setting up a pressure gradient across the bed. In a conventional rotary extractor the extraction zone is maintained at a higher pressure than the collection zone for the percolated solvent. This is achieved with a dividing plate between the zones whose edges are sealed and which has narrow openings, which taper upwards towards the extraction zone, for passage of the solvent.
Patent DE-2129635-A1 (DE)
Title: Decorative foil rosette prodn - using double press tools
Inventor: ANTON HANSEN OSCAR
IPC: B29C67/00
Filed: 1971-06-15
Abstract: A circular work piece is crimped between a pair of axially movable circular plates, each with central bore and each with a set of radial ribs arranged so that one on each disc forms a symmetrical pair about a common radius line. One of the two plates is in a holder with a central spring loaded, shaped mandrel which engages a corresp. shaped matrix in the bore of the other plate holder and this has a central spring loaded ejector pin.
Patent DE-2130595-A1 (DE)
Title: Pickling of copper - removal of dissolved and solid copper residues,and recovery of copper there from
Inventor: JANUS HEINZ
IPC: C23G1/36
Filed: 1971-06-21
Abstract: A cyclic process is proposed for the recovery of max. amts. of copper from pickling lines and the prodn. of non-polluting effluents. The pickling soln. is electrolytically treated to deposit copper and then recycled. After pickling the items - rods, sheets, etc., are immersed in a water bath to remove excess pickling soln. - this wash water can also be electrolysed. Thereafter the items are water sprayed to removed solid particles and the resultant mud neutralised to produce hydroxides of copper which are removed by filtration and pressing and subsequently redissolved in the pickling acid and electrolysed. A tartaric acid spray is used as a final cleaner and the soln. from this can be safely neutralised and disposed of. Max. recovery of copper and reuse of pickling acids is possible.
Patent DE-2206999-A1 (DE)
Title: Fish beheader - providing simultaneous removal of the tail and intestines
Inventor: WENZEL WERNER
IPC: A22C25/14
Filed: 1972-02-15
Abstract: In a machine for removing the heads from fish, of the known type with an endless conveyor provided with troughs for the fish and passing round >=2 guide wheels, a tool for cutting away the heads and an intensive-drawing head, each trough is of U-section and with the exception of a slot extending up to its bottom surface is connected with an equally U-shaped head trough, the head cutter being arranged above the wheel carrying the discharging fish troughs, and consisting of two co-operating quillotine-type cutting blades placed within the slot, the lower blade at least being hook-shaped, while the intestine withdrawal head is constructed in known manner as a multi-pronged fork oscillating along the extension of the longitudinal axis of the fish trough when this is situated in the operating position.
Patent DE-2211649-A1 (DE)
Title: Colour mixes prodn - of exact pre-determined tone
Inventor: KUEPPERS HARALD
IPC: B44D3/00
Filed: 1972-03-10
Abstract: Exact, pre-determined colours, esp. for pastes, dispersions and pigments, are produced by determining the proportions of the subtractive colours yellow, magenta and cyano-blue in the desired colour shade. This is then produced by mixing black (equivalent in amt. to the saturation value of all three subtractive colours) with violet or green or orange (equiv. to the max. possible saturation value of two of the three subtractive colours) and yellow or magenta or cyano-blue (equiv. to the max. saturation value of one of the three subtractive colours). White is added to make up full saturation. spectrally pure colours only should be used.
Patent DE-2222098-A1 (DE)
Title: Ammonia furnace - for catalytic burning to nitrous gases
Inventor: LURZ KLEMENS DIPL-ING
IPC: C01B21/28
Filed: 1972-05-05
Abstract: A boiling liquid is flowed through the cooling coil(s) whereby the cooling of the contact network is more unifrom and not so intensive as in the known apparatus of this type in which cold water is flowed through the cooling coil. Thus optional temp. of the network is maintained ensuring good conversion of ammonia and, on the other hand, sparing the catalyst. The heat economy of the apparat us is good.
Patent DE-2228706-A1 (DE)
Title: Pig stunning system - for abattoirs using microwave beam directed at temple
Inventor: SCHWARTZ WERNER
IPC: A22B3/06
Filed: 1972-06-13
Abstract: Animals (pigs) in abattoirs are stunned by directing a beam of microwaves through the temples into the brain so that this is heated to 41-50 degrees C. This causes unconsciousness within 1-10 sec. The frequency range is 100 to 10 000 MHz.
Patent DE-2233897-A1 (DE)
Title: 2,2-Dimethyl 1,3-propandiol hydroxypivalates - by disproportionating hydroxypivalaldehyde
Inventor: MERGER FRANZ DR
IPC: C07C69/66
Filed: 1972-07-10
Abstract: 1,3-propanediol hydroxypivalic acid monoester (I) prepn. of disporportionating hydroxypivalaldehyde (II) at increased temp in presence of the hydroxide of Ca, Ba or Sr, as in parent patent, is improved by reaction in presence of Ca(OH)2, Ba(OH)2, or Sr(OH)2 and of water, or in presence of >=1 oxide and/or hydroxide of Li, Mg, Tl, Pb, Bi, La, Ce, Zn, Cd, Mn, Fe, Co, Ni and/or oxides to Ca, Sr and Ba, opt. in presence of water, in place of or in addn. to the hydroxides of Ca, Ba, or Sr. Yields and space-time yields are higher and a pure prod. is obtd. The rate of reaction is greater, and the reaction may be carried out at room temp. (II) may be pure, or the impure prod. of reaction of isobutyraldehyde with HCHO. The ester prepd. in presence of water may be purified over acid ion-exchangers. (I) is a raw material for synthetic resins and softeners.
Patent DE-2244366-A1 (DE)
Title: Hard PVC nailable batten for facing - long-lasting and does not rot, shrink or expand like normal wooden batten
Inventor: MARQUARDT DIETER
IPC: E04F19/06
Filed: 1972-09-09
Abstract: The latter comprises an extruded plastic hollow profile with at least one intermediate wall at a distance from, and parallel to, the rear wall. Pref. the square cross sectioned batten has three uniformly spaced intermediate walls and a flange projecting over the rear wall.
Patent DE-2260416-A1 (DE)
Title: Collarless drill pipe joint - has acme thread with effective centre line angularly offset relative to taper thread
Inventor: KALUZA HUBERT DIPL ING
IPC: F16L15/06
Filed: 1972-12-07
Abstract: A collarless joint for drill pipes uses an acme screw thread on the spigot and socket parts, both of which retain the original wall thickness. The centre line of the effective thread diameters deviates from that of a taper thread in that there is a continuous partial offsetting of that line in the direction of the other mating part. The inclined tooth flank of the spigot part has a concave shape and cooperates with a convex shape on the flank of the socket part.
Patent DE-2262906-A1 (DE)
Title: Dewatering of paper - accelerated by polyamide amines polyether amines and polyethylene imines, with addn of bentonite
Inventor: PUMMER HELMUT
IPC: D21H17/55
Filed: 1972-12-22
Abstract: Dry bentonite 1-10wt.% and opt. Al2(SO4)3 0.5-3wt.% based on wt. of dry paper, are added to aq. cellulose fibre suspensions contg. polyamide amines, polyether amines or polyethylene imines as dewatering accelerators. The bentonite is pref. obtd. by activating montmorillonite clays with univalent cations. The detrimental effect of impurities e.g. humic acid, waterglass, starch, CMC, and slime on the action of the dewatering accelerators is overcome. Prodn. of paper and cardboard is increased, loss through the sieve is reduced by >100%, and the bentonite is retained in the paper.
Patent DE-2264984-A1 (DE)
Title: Seed potato planting machine - has two closely adjacent rows of conveyor-cups on continuous belt with separator and rollers
Inventor: WEITZ OTTO
IPC: A01C9/02
Filed: 1972-03-23
Abstract: The machine housing has two pivot-mounted rollers over which runs a conveyor belt made of rubber or similar material. The conveyor carries two rows of cups spaced in staggered formation. The upward-moving side of the belt passes at the bottom through a potato-hopper which is open at the top. The edges of teh conveyor belt are held by guides so that they can move sideways into the middle a little. In the middle between the edges, a roller touches the edges. This roller is pivot-mounted between the guide pieces near the top end of the guide pieces. The cross-section of the conveyor belt is V-shaped. A vibrator is positioned against the inside of the upward-moving part of teh conveyor belt. Projections on the rotation vibrator-roller make the conveyor belt vibrate.
Patent DE-2319433-A1 (DE)
Title: Fibre reinforced resin container prodn - esp spherical gas or liq containers by geodetic winding
Inventor: CHRISTENSEN BOERGE
IPC: B29C70/00
Filed: 1973-04-17
Abstract: A continuous strand of resin impregnated fibre is geodetically wound over the whole surface of a spherical mould with the exception of a narrow opening around the single trunnion spin axis of the mould. This trunnion is at the end of a two piece arm with an independent knee joint whose other end is pivoted about a horizontal axis. The thread-guide is spatially fixed and the shaft trunnion of the mould oscillates about both its knee axis and the horizontal axis. All three axes meet at a point and the knee axis is at 45 degrees to the horizontal.
Patent DE-2332046-A1 (DE)
Title: Melamine/formaldehyde acidic colloidal soln. prepn. - storage stable, used in paper prodn. to increase wet strength
Inventor: GUENDER WOLF DIPL CHEM DR
IPC: D21H17/51
Filed: 1973-06-23
Abstract: The process comprises precondensing melamine and HCHO (or a cpd forming HCHO) in an aqs. suspension at pH 4-9; followed by treatin gthe precondensate with excess HCHO in above pH range and finally acidifying the condensate suspension with HCl or an aliphatic carboxylic acid with apKa =3.5 and/or phosphoric acid. The soln. is storage stable for >=6 months without gelling and when incorporated in paper gives a prod. with superior wet strength than when prior art resins (as prepd by US 2986489) are used.
Patent DE-2350523-A1 (DE)
Title: Broadcast receiver with a frequency display device - indicates the received frequency on a frequency scale
Inventor: HASSELBACH WOLFGANG DIPL-PHYS
IPC: H03J3/14
Filed: 1973-10-09
Abstract: The receiver is tuned by variations of a voltage applied to a capacitance diode. An analogue liquid crystal display is controlled by the voltage corresponding to the received frequency. Selected voltages for the capacitance diode are applied to the liquid crystal display control electrode. A potentiometer is mechanically coupled with the mechanically variable tuning means, and its voltage is applied to the liquid crystal display. The liquid crystal display appears as line markings. It may appear as a bar whose length is proportional to the tuning voltage.
Patent DE-2350570-A1 (DE)
Title: Bis-1,3,4-oxadiazole derivs - for use as optical bleaches
Inventor: MEYER HANS-RUDOLF DR
IPC: C08L27/00
Filed: 1973-10-09
Abstract: Cpds. of formula (I): (where R1 and R'1 are H, opt. non-chromophorically substd. =18C aliphatic, cycloaliphatic or araliphatic gps., or opt. non-chromophorically substd. mono- or di-nuclear carbocyclic or heterocyclic aromatic gps.; Q is 4, 41-biphenylylene substd. in each ring by X (where X is H, halogen, 1-4C alkyl, 1-4C alkoxy, SO3M or opt. substd. sulphamoyl or both X gps. form a 9,10-dihydrophenanthrene ring; M is H or a cation) or is p-phenylene opt. substd. by halogen, 1-4C alkyl, SO3M or opt. substd. sulphamoyl or opt. fused with a 6-membered ring) are new cpds. which can be prepd. by standard methods, e.g., by reacting Y1-CH=CH-Q-CH=CH-Y, with R1Y2 and R'1Y2 (where one of Y1 and Y2 is opt. functionally modified COOH and the other is a hydrazide gp.).
Patent DE-2351933-A1 (DE)
Title: Fusible adhesive applied onto very thin plastics sheet - using intermediate revolving segment to cool adhesive from hot tank
Inventor: BRINKMEIER FRIEDHELM
IPC: B05C1/08
Filed: 1973-10-16
Abstract: An applicator device for applying a fusible adhesive onto sheets, bags, handles or other articles or onto plastics sheets comprises a dipping roll partly immersed in the adhesive tank, and a revolving applicator segment located intermediately between the dipper roll and the roll segment which carries the sheet or article to be coated; the dipper roll operates in association with a stationary wiper plate which determines a uniform adhesive coating on the roll of adjustable thickness, and the surface of the applicator segment is faced with silicone or PTFE. Pref. this face of the applicator roll is resiliently mounted and has a contour suited to the shape of the adhesive application desired. In particular, the edges of the applicator segment are chamfered and its application force against the dipper roll is weak, while the corresp. force against the segment carrying the article to be coated is stronger. The revolving adhesive transfer segment is pref. cooled. Process for the application of a fusible adhesive to a very thin plastics sheet which normally would be thoroughly distorted by the penetration of heat from the adhesive. The use of an intermediate, pref. cooled transfer segment enables the adhesive to cool considerably before being applied to the receiving plastic sheet, though still retaining its adhesion properties. The use of a non-stick coating of silicone or PTFE on the applicator segment promotes the easy stripping off of the adhesive and its complete deposition onto the receiving article. The use of chamfered edges in particular prvents ropiness of the adhesive.
Patent DE-2358334-A1 (DE)
Title: Programmed control system for boring machine - has program switch unit and number of tool holders
Inventor: BREGNARD CHARLES
IPC: G05B19/12
Filed: 1973-11-23
Abstract: The programmable sequential unit consists of sets of push and pull programmable plungers. A number of switches are provided which are actuated by the plunger corresponding to a tool in the given position. The tool pushes the plunger inwards and actuates the switch. The rotating disc has seats for tools and the coaxial drum accommodates the plunger inwards and actuates the switch. The rotating disc has seats for tools and the coaxial drum accommodates the plunger and switch system. The tool by its presence or absence actuates the system and relieves the operator from the duty of paying attention to particular functions of the given tools. This prevents errors. The total of the idle times can hence be reduced in a large number of machining tasks . The system reduces the total of the idle times required for tool changes and which is usually greater than the total of the idle times required for changing the position of the cutting tool unit relative to the boring spindle.
Patent DE-2407103-A1 (DE)
Title: Ladder scaffolding supporting working-platform - with triangle-grouped cantilevered supports with hooked traverses on base bar
Inventor: KLUTE WILLI
IPC: E04G5/06
Filed: 1974-02-14
Abstract: The scaffolding, which incorporates ladders and one or more work platforms, has a support elements forming a triangle, the base profiled bar of which has traverses, in a multiple of the intervals of the ladder rungs and of length corresponding to rung width, with U-shaped bent hooks at each end. The ends are connected to a bracket profile, which is horizontal while the base profile slopes according to the angle of ladders leaning at an angle, and an underpinning support profile, together combining to form the triangle. The support profile may be in two parts, which can be rigidly joined but permit length adjustment, and which may be perforated for engagement by bolts where required. This is inexpensive, and is easily produced and manipulated.
Patent DE-2408267-A1 (DE)
Title: Reversing device for mechanical ratchet drive - ratchet is driven from crank and connecting rod over a slotted connection
Inventor: DAUM HERMANN
IPC: F16H31/00
Filed: 1974-02-21
Abstract: A ratchet is driven by oscillatory motion of a lever provided by a connecting rod and eccentrically rotating crank pin. A bolt passes through a lever and also through an elongate slot in the connecting rod. By adjusting the initial position of the lever the amplitude of the oscillatory motion can be controlled between zero and a maximum. When set at zero the pawl driving arrangement to the output shaft can be reversed without stopping the rotation of the crank pin. Adjustment of the initial position of the lever is effected by a lever which rotates a pulley and via a belt is connected by springs to either side of the lever.
Patent DE-2413478-A1 (DE)
Title: Sulphuric acid prodn. by contact process - with sulphur trioxide absorption under controlled conditions
Inventor: NOWOSCHILOW WASILIJ NIKOLAJEWI
IPC: C01B17/76
Filed: 1974-03-20
Abstract: In the contact process for H2SO4 prodn., the SO3-contg. gas is contacted with =1.5 kg (per kg of gas) of 92-98% H2SO4 at 30-125 degrees C to absorb the SO3, the gas flow rate being >=13 Nm/sec. The amt. of H2SO4 mist entrained in the waste gases is =0.15 g/Nm3 and degrees of SO3 absorption of up to 99.9% are achieved while maintaining a high throughput. The initial SO2-contg. gas can be obtained by roasting sulphur or iron pyrites and is dried to an H2O content of =0.02 vol.% before passing to the contact appts. The absorption unit pref. comprises 3 stages in series, the gas travelling upwards through each stage in cocurrent with the absorbing H2SO4; the latter is sepd. from the gas at the end of each stage and the gas is passed on to the next stage.
Patent DE-2417113-A1 (DE)
Title: Casting mould of unbonded porous refractory with plastics lining - has core similarly constructed to prevent core sand entering mould
Inventor: BERNDT HEINZ DR ING
IPC: B22C9/03
Filed: 1974-04-08
Abstract: A casting mould comprises a plastics sheet forming the lining to the mould void, the space behind this plastics sheet being filled with a refractory material contg. no binding agent, vacuum being applied to this space so that the plastics sheet is drawn by suction onto the loose refractory granular material and thus maintains it in place. The core for use in conjunction with this mould is constructed in a similar manner by vacuum packing loose granular refractory material inside a plastics sheet, esp. a polyethylene sheet contg. >=10% polyvinyl acetate to make it sufficiently deformable. Using this core, which contains no binder, progressive blocking of the pores in the mould sand does not take place.
Patent DE-2420344-A1 (DE)
Title: Roof rack-mounted easily erected tent - comprises basically rectangular flat box opening out into tent supported by car and ladder
Inventor: DOMENEGHETTI GIANCARLO
IPC: E04H15/06
Filed: 1974-04-26
Abstract: The tent which is to be set up by using the car roof as a support is of the basically standard design with a saddle roof but the base is made from interconnected hinged plates. One of these plates is fitted with support elements for attachment to the car roof whilst the other plate is connected on the side remote from the hinges with a support ladder which when the tent is erected, serves both the support the part of the tent protruding sideways from the car roof and to allow entry into the tent. Several U-shaped tubular rods are provided to support the walls and roof and the free ends of these rods fit together to form joints whilst the connecting webs support the roof. These connecting webs are fastened to the canvas so that when the second plate is unfolded to lie in alignment with the plate on the car roof, the canvas is stretched over the rods although in the collapsed position the canvas and rods lie between the two plates.
Patent DE-2422186-A1 (DE)
Title: Multideck baking oven - with specified ratio of suction to blowing chamber apertures for circulating hot air
Inventor: KROMER HERMAN
IPC: A21B1/26
Filed: 1974-05-08
Abstract: In a multideck baking oven, the air is extracted from the baking chamber through vertical suction chambers which extend over the height of the front and rear walls and lead to a circulation fan. Their apertures joining them to baking chamber are so designed that their total cross-section does not exceed that of the nozzles leading from the pressure chambers on the side walls into the decks of the baking oven. This ensures a uniform distribution of the hot air over all decks of the pastry carriage. The result is a uniform quality of baking independent of the height of the deck.
Patent DE-2425797-A1 (DE)
Title: Limited slip shaft coupling - has interdigitated discs on shafts rotatable in viscous fluid with enclosure
Inventor: DABISCH WOLFGANG
IPC: F16D35/00
Filed: 1974-05-28
Abstract: The coupling has two elements (5) secured to respective shafts (1) and contained in a fluid-tight housing (2). Rotation is transmitted by the shear resistance of a viscous fluid, e.g. a solution of 10-20% natural rubber in xylol, contained in the housing. To increase the shear area, the elements may each comprise a disc (4) having axial annular projections arranged for the projections of the one disc to be interdigitated with those of the other disc. The coupling satisfies the changes in torque and diameter in drives for coiling or uncoiling of web material or the like.
Patent DE-2427303-A1 (DE)
Title: Heat exchanger with tubular elements - consisting of concentric tubes and finned heating tube
Inventor: LEWIN EWGENY SERGEEWITSCH
IPC: F28F9/22
Filed: 1974-06-06
Abstract: The heat exhanger with tubular elements is used for heating of viscous liquids, is used in shipbuilding, the petroleum industry and in the foodstuffs processing industry. This heat exchanger is readily dismantled for cleaning and the condensate from the heating element is readily removed. The viscous liquid flows between the internal and external tubes (4). The internal tubes (5) have longitudinal heat transfer ribs (6). Into these internal tubes are placed additional tubes (7) so that the additional and internal tubes form heating elements. The inner tubes are closed and held in the baffle plate (9). the additional tubes have one closed and their other ends are connected to another tube plate. the heating medium enters through the nozzle (13) and condensate is forced out through another nozzle. The tubes for viscous liquid have different sizes for improving flow with changing viscosity.
Patent DE-2432778-A1 (DE)
Title: Thermoplastics sheet flattened between temp. controlled endless belts - to give high finish both sides
Inventor: BORTNICK NEWMAN M
IPC: B29C48/08
Filed: 1974-07-08
Abstract: A method of making thermoplastics sheets having excellent surface properties, good dimensional stability and almost istropic properties, is as follows; a thermoplastics polymer is continuously extruded and immediately prevented from cooling in a receiving unit, and is then compressed, flattened and spread out between upper and lower conveyor belts which propel it forwards synchronously these conveyor belts are adjustably and controllably heated to provide a temp. gradient ranging from above the setting temp. to below the decompsn. temp. for the matl.; the tensions in the belts are maintained to compensate thermal changes in length, and the belts are finally cooled to enable the sheet to be removed without sticking; the resultant smoothed and polished sheet leaves the system at the end. Pref. the conveyor belts are of stainless steel with a high finish apart from any patters to be imprinted upon the plastics sheet. The polymer may be produced by an extruder or by other methods. The process is used to prepare high quality shet from a large range or plastics, including: polymethylmethacrylate, copolymers of methylmethacrylate and up to 50% low alkylacrylates, PVC copolymers of vinyl chloride contg. up to 10% of monomers; ABS plastics; polycarbonates, polysulphones.