baber/WOPTO huggingface dataset:
Patent DE-2533215-A1 (DE)
Title: Fuel cell temperature and electrolyte concentration control - by preheating and prehumidifying air for cathode gas spaces
Inventor: BOEHM HARALD DR
IPC: H01M8/04701
Filed: 1975-07-25
Abstract: Working temp. and electrolyte concn. in a crude gas/air fuel cell with an acid electrolyte are kept constant by a heat conduction system for the air. Before the air enters the cathode gas space of the fuel cell, it is heated to the working temp. and passed to the cathode gas space with a predetermined degree of water vapour satn. Method removes only the water, formed by chemical reaction on the cathodes, and keeps the electrolyte concn. constant. There is therefore no electrode output reduction or damage to the matrix substance.
Patent DE-2533794-A1 (DE)
Title: Boiling lye contg. sodium sulphite and carbonate, prodn. - from green liquor by pptn. of sulphide with iron cpds., avoids pollution
Inventor: WATERSTRADT HANS VIKTOR DR
IPC: D21C11/00
Filed: 1975-07-29
Abstract: In the prodn. of boiling lye contg. Na2SO3 and Na2CO3 for cellulose mfr. from green liquor (I), Fe cpds. (II) are added to (I), the Fe sulphide (III) pptd. is sepd. and the remaining soln. is adjusted to the required Na2SO3 content for hemicellulose prodn. by introducing SO2. (II) can be Fe(II) or Fe(III) cpds., esp. oxide and/or hydrated oxide, carbonate or bog iron ore and are added at 20-120, pref. 50-105 degrees C. (III) pref. is roasted and the SO2 and/or Fe oxide formed are recycled. Process is economical and environmentally satisfactory, since no H2S is evolved.
Patent DE-2543634-A1 (DE)
Title: Mixer and melter for plastics compsns. - has a cylinder and a pair of counter rotating screws one of which rotates at a lower rat thane the other
Inventor: KUBO SHIGETOSHI
IPC: B29C48/67
Filed: 1975-09-30
Abstract: A twin-screw mixer/melter for plastics compsns. has a cylinder and counter-rotating screws inside the same, one of the screws rotating more slowly than the other one. Both screws are adapted to be longitudinally displaced wtc. the cylinder. This is achieved by means of adjusting plates arranged at one end of each screw. Each screw consists of a conveying section (I) and a discharge section (II) the former having 2 conveying thread sections with 2 or 3 thread turns with a larger pitch than the preceeding one >=1 counter-directed windings an enlarged portion forming a constriction and arranged near the end of the counter-winding, and a chamfered section. The discharge section has a conveying winding adapted to improve the working-up of the moulding cpd. being processed, a discharge winding and a return winding for preventing overspill. The cylinder has a slanting surface opposite the chamfered portion of the screw, and there is a slot between cylinder and screw. The cylinder also has a discharge aperture and a degassing aperture at a point corresponding to the discharge winding. The cylinder discharge aperture and the de-gassing aperture face perpendicularly wrt. each other. The mixer/melter is a relatively simple construction and has high efficiency.
Patent DE-2544529-A1 (DE)
Title: Atomic absorption spectroscopy by laser beam - using pulse light source and delay line network
Inventor: BOEWE DIETER DIPL PHYS
IPC: G01N21/31
Filed: 1975-10-04
Abstract: A single pulse light source is provided to stimulate the active laser medium and generate background radiation for evidence of absorption. To ensure side-on emission of the stimulating energy and end-on emission of the background radiation, the pulse light source has a conventional angle-shaped form and has a plane-parallel exit window made of quarz for the background radiation. There can be a delay line network to generate trapezoidal light pulses with steep flanks and with a duration up to a few miliseconds. The background radiation can be directed at right angles to the laser radiation by optical means.
Patent DE-2547405-A1 (DE)
Title: Portable conveyor system with collapsible support - has strip segments supported by pressurised air bags with upper surfaces inclined to each other
Inventor: HAMY NORBERT
IPC: B65G15/60
Filed: 1975-10-23
Abstract: The portable conveyor system is for people or goods and consits of a collapsible support body (18) and a continuous loop of flexibly, coupled segments (12), positioned above the support, over part of its length. An air gap (16) is formed between support and segments and there is a unit to feed pressurized air into the support. A member (24) is positioned above the support and the loop passes over it to supply pressurized air from the support into the air gap. The loop is driven and there is a side seal arrangement (28) to form a sealed contact between loop and support. The support consists of two parallel flexible air bags, with upper surfaces inclined towards each other. The correspondingly-shaped loop is supported and centred between the bags.
Patent DE-2550491-A1 (DE)
Title: Train non captive overhead traction pantograph - with alternate polarity strips and thyristor controlled switching on multi-wipers
IPC: B60L5/34
Filed: 1975-11-11
Abstract: The overhead traction system has a wide overhead track divided into transverse segments of alternate polarity separated by insulating strips. The pantograph has two or more wipers spaced apart to straddle the strips. The on board electrics are fed from the overhead line via thyristor controlled current gates to ensure correct polarity. The insulating strips are wider than the wipers, so that the wipers cannot bridge the conductors. The systems provides greater flexibility in that vehicles can approach and pass each other from both directions.
Patent DE-2554752-A1 (DE)
Title: Sound proofing for engine of construction vehicle - with enclosed engine and padded ventilation ducts with internal baffles
Inventor: BRAUN WERNER
IPC: B60R13/08
Filed: 1975-12-05
Abstract: The engine of the construction vehicle is totally enclosed in a sound proofed casing sealed from the outside. The cooling air is drawn into the casing via special ducts along the sides. The ducts are walled with sound proofing padding and the sound is further dampened by baffle plates in the ducts. The sound level of the machine is considerably reduced, especially the noise level from the cooling system. The air intakes and outlets are positioned between the engine casing and the externally mounted radiator.
Patent DE-2555444-A1 (DE)
Title: Luggage restrainer for vehicle boot - has inflatable airbag under boot lid operated automatically when ignition is energised
Inventor: KOELSCH WOLFGANG
IPC: B60P7/06
Filed: 1975-12-10
Abstract: The underside of the boot lid (2) is fitted with an airbag (3) which is inflated to restrain the luggage (5,6) in the boot and prevent it from rolling about. The airbag is inflated either from an outside valve from inside the vehicle, and provides a light, simple and economic protection for the luggage. Air pressure indicators and over pressure relief valves can be added to prevent excess pressure on the luggage, especially when delicate items are carried. The airbag can also be inflated automatically from an engine driven compressor as the ignition is switched on.
Patent DE-2556980-A1 (DE)
Title: Cleaner for pneumatic milking equipment head - has alternate application of suction and pressure in cleaning fluid to clean all excesses
Inventor: HAPPEL FRITZ
IPC: A01J5/00
Filed: 1975-12-18
Abstract: The pneumatic milking equipment is immersed in a vessel of cleaning fluid, and is connected by the rubber tube to the inlet of the tank. The tank is connected by the tube to a vacuum source and by the tube to a source of compressed air. When the tank is empty the float sinks to its lowest position, closing one valve and opening another. The pressure in the tank falls below that of the atmosphere causing cleaning fluid to be drawn through the equipment into the tank. The rising level of fluid pushes the float upwards closing the suction valve and opening the first pressure valve. The pressure blows the fluid back through the equipment allowing the cycle to be repeated.
Patent DE-2605341-A1 (DE)
Inventor: CHAPMAN MARTIN GEORGE
IPC: C11D17/00
Filed: 1976-02-11
Abstract: C L E A N I N G   C O M P O S I T T O N S Mixtures of alkali metal polyphosphate salts obtained by the neutralisation of a polyphosphoric acid solution which comprises from 80 to 81% by weight of phosphorus pentoxide, have been found to be especially valuable builders for liquid detergents of moderate alkalinity. They combine good sequestering power with relatively high stability on prolonged storage.  The cleaning composition will have a pH in the range 8 to 12.
Patent DE-2610418-A1 (DE)
Title: Single rod anatomical angles measurer - has circular scale with spirit level or plumb bob to orientate rod with datum line
Inventor: SCHILGEN LUDGER DR MED
IPC: G01B5/24
Filed: 1976-03-12
Abstract: The single rod anatomical angles measurer is quicker to use than the usual pair of hinged rods. The single rod is pivoted to a graduated scale and has a gravity device e.g. a plumb bob or a spirit level by which the rod can be oriented exactly horizontally or vertically. A datum line is marked on the rod. The circular scale can be clipped into a fixed position relative to the rod. Movement of the scale moves the spirit level as well, but the level can be moved without moving the scale. This allows the use of an oblique scale datum.
Patent DE-2615480-A1 (DE)
Title: Changeover switch for control systems - has rocker lever with perpendicular extension together forming T-structure
Inventor: LENG ROBERT ING GRAD
IPC: H01H13/68
Filed: 1976-04-09
Abstract: The change-over switch is intended for switching over a control system from manual to automatic control etc. It consists of two push-button switches actuatable against a spring force, which are hingeably connected by a rocker arm mounted between them. The rocker arm (32) has an extension (35) at right angles to the lever so that the two elements form a T. The free end of the extension is engaged by a dead centre spring (37, 38). Preferably the extension free, spring-stressed end points in its dead centre position in the actuating direction of the push-button switch (18, 19). A compression spring is used in the design. Alternatively a leaf spring may be used and is flexed by the extension.
Patent DE-2618355-A1 (DE)
Title: Front lens attachment for spotlights - is fitted with receiving and holding sections and equipped with height adjusting tensioning device
Inventor: SEELBACH HEINZ
IPC: F21V17/16
Filed: 1976-04-27
Abstract: A front inset section is for spotlights with a receiving section having a light outlet opening. It is connected to the spotlight and with a holding section which also has a light outlet opening. In addition there is light transparent inset which can be fixed between the receiving section and the holding section made as a coloured foil or as a lens. At least two coupling fittings are attached to at least one of the two sections, especially the receiving section (10) in a height plane offset arrangement for a coupling device which locks into a coupling device which locks into a coupling fitting on the other section, such as the holding section (16). There is also a tensioning section co-ordinated with the holding section which when in the tensioned position presses the holding section against the receiving section (10) whilst equalising any height difference.
Patent DE-2620771-A1 (DE)
Title: Coupling for width holding and smoothing cylinder - permits efficient driving of cylinder rotating on curved axis
IPC: F16D3/74
Filed: 1976-05-11
Abstract: A width stretching, holding and smoothing cylinder for flat materials such as paper, woven fabrics, leather, etc., supported on a fixed shaft with a curved axis, is driven by a belt pulley rotating freely on the journal of the fixed shaft The drive is transmitted by carriers which can be tilted relatively to the axis of rotation of the belt pulley, and connect the pulley to the cylinder so that the pulley rotates the cylinder. Alternatively, the driving pulley may be connected to the cylinder by a flexible strip which bridges over and covers the space between the pulley and the end face of the cylinder. Allows the belt pulleys to be aligned correctly so that there is no exceptional wear and the normal lifetime of the driving belt is ensured.
Patent DE-2633370-A1 (DE)
Title: Profiled cylinder lock with anti-breaking device - has steps for contacting against support plate and relieved bridge section
Inventor: POBANZ KURT
IPC: E05B9/08
Filed: 1976-07-24
Abstract: The profile cylinder lock has clamping screw held in tapped hole in flange. The lock is secure against breaking, and the middle bridge section in relieved when axial tensile forces are applied to the lock. The outside surface has a support step for ensuring contact against the support plate resting on the door plate contact face. The support plate is provided with a fork opening and is mounted on the cylindrical part. Several support steps are arranged in the form of slots in series.
Patent DE-2634004-A1 (DE)
Title: Orally administered medicament dissolution acceleration - by using crosslinked insoluble polymers as carrier materials
Inventor: LIPPOLD BERNHARD DR
IPC: A61K47/32
Filed: 1976-07-29
Abstract: In the method crosslinked insoluble polymers with hydrophobic and hydrophilic gps. are used as carrier materials for the medicaments. The medicaments are mixed with the pre-swollen crosslinked polymer by the embedding process. The medicament undergoes a change into an amorphous state, and it is this which gives the improved solubility characteristics. Pref. polymeric carriers are 2-hydroxyethyl methacrylate crosslinked with ethylene dimethacrylate, and crosslinked polyvinylpyrrolidone.
Patent DE-2636592-A1 (DE)
Title: Tray with fold-down legs and carrying handle - has legs and handle interconnected for space saving storage parallel to tray surface
Inventor: THAMERUS THEOBALD
IPC: A47G23/06
Filed: 1976-08-13
Abstract: The foldaway tray is provided with at least one carrying handle (4, 5) which is connected to two support legs (6, 7) and which together with the support legs can be removed from its normal position. In this dismantled state the legs and handle can be placed parallel to the work face of the tray for easy space saving storage. This tray is of use when camping etc. The carrying handles which are designed to swivel about bolts (2, 3) from one position to another can be fixed in their normal position by means of adhesive magnets (8, 9) or other easily detachable connecting means.
Patent DE-2639111-A1 (DE)
Title: Ventilating system for closed swimming pools - with air introduced at high level and extracted through pool overflow channel
IPC: F24F7/06
Filed: 1976-08-31
Abstract: A system of ducts runs through the space between the ceiling and the roof. Grilles discharge air into this space and by forcibly ventilating it prevent condensation of moisture on the under side of the roof. Other grilles discharge air horizontally under the ceiling so that it flows parallel to the ceiling and then down along the walls. It is extracted through grilles in the floor round the pool which also serve to conduct water overflowing from the pool or used for washing the floor to an overflow channel. It is drawn into the inlet of the extract fan from the top of this channel and passes through a water separator between the channel and the fan.
Patent DE-2647015-A1 (DE)
Title: Propeller driven from terrestrial magnetic field - uses paired permanent magnets and flux diverters
Inventor: DUSCHKOW NEDELTSCHO DIPL ING
IPC: H02K53/00
Filed: 1976-10-18
Abstract: The object of the construction is to employ the earth's magnetic field to drive a propeller or turbine runner by mutual repulsion or attraction. The blades to be driven comprise pieces or strips of permanent magnetic material with one pair of like poles facing each other but separated by a magnetically insulating holder. The other pair of like poles face outwards. One half of the propeller is shielded from the earth's field at any one time by a diverter, typically of mumetal. Thus the terrestrial field acts in an unbalanced manner producing a torque which drives the propeller which can then us used to do useful work in driving, for example, an aircraft.
Patent DE-2653238-A1 (DE)
Title: Aircraft wheel pre-rotating mechanism - has projections on tyres or wheel hubs formed as wedge-shaped scoops
Inventor: WINTER SIEGFRIED DR
IPC: B64C25/40
Filed: 1976-11-19
Abstract: The aircraft undercarriage wheel pre-rotating mechanism is in the form of projections either on the tyre or on the wheel hubs. The projections are wedge-shaped scoops, so arranged that they offer greater resistance to the flight airstream when they are below the wheel horizontal centre plane than when they are above. The wheels will therefore rotate when lowered, in the direction in which they will turn when the aircraft lands. To avoid reducing tyre flexibility the scoop radial boundaries are of flexible material, or peripherally slotted. A peripheral speed indicator can be fitted in the cockpit.
Patent DE-2654372-A1 (DE)
Title: Carrying strap for fixing ski to ski-stock - has spring to retain strap inside ski-stock when not required
Inventor: LUEBKE ELIGIUS DIPL ING
IPC: A63C11/22
Filed: 1976-11-16
Abstract: A strap is used for attaching a ski to a ski-stock to facilitate carrying the skis to the ski-lift. The strap is attached to a helical ension springs by a ball which is fitted inside the upper end of the hollow ski-stock. The other end of the spring is attached to a tubular river fitted across the ski-stock. The other end of the strap passes around a second rivet and through a hole in the wall and is reained by a button. When required the strap is pulled out of the hole and fixed around the ski. The other end of the ski is fitted into a slot cut in the disc at the other end of the ski-stock.
Patent DE-2654396-A1 (DE)
Title: Liq. flow control system for kidney machine - balances body liq. withdrawn with substitute solution continuously and automatically
Inventor: DOHT BERND DR MED
IPC: A61M1/34
Filed: 1976-12-01
Abstract: The arrangement for monitoring and control of liq. through flow of an artificial kidney filters out blood liquids contg. urine substances. The latter are replaced. The artificial kidney is operated independently, without assistance. The substitute soln. quantity is continuously matched to the quantity of blood liq. withdrawn. The ratio of the liquids is maintained over the whole treatment period. The quantity of the filtrate withdrawn is continuously balanced with the substitute soln. The filtrate quantity is continuously measured and measured values are used to control the supply of the substitute soln.
Patent DE-2655287-A1 (DE)
Title: Peat cylinder with soft transplanting zone - uses thin cotton fabric casing to hold peat cylinder together and reinforce water absorption
Inventor: MIELKE GEB SCHMIDT WILHELMINE
IPC: A01G9/10
Filed: 1976-12-07
Abstract: The peat cylinder consists of a growth medium, such as peat, cellulose etc. and an enclosing sheath of light cotton fabric. The cylinder has a soft transplanting zone to allow young plants more space to develop. Specifically, individual pots have a cylindrical cross-section. The inner third of the cylinder diameter is the soft transplanting zone while the rest of the cylinder content is compressed to form an outer ring. A thin cotton fabric casing has its seam held together by a self-adhesive strip or adhesive. Cotton is preferred to plastic as it reinforces the water absorption of the peat.
Patent DE-2656790-A1 (DE)
Title: Control gear of axial piston pump - has piston moving axially and rotating about own axis to give feedback
Inventor: KROPP WALTER
IPC: F15B9/10
Filed: 1976-12-15
Abstract: The valve gear of an axial piston pump has a cylinder (6) bolted to the pump casing (1). The cylinder contains a piston (8) which can be moved axially by oil admitted to either end (9, 12) of it through connections (11, 16) in the ends of the cylinder. The piston (8) has helical ribs (30) leaving channels (31) between them. These ribs and channel open and close the communication between three ports (26, 27, 28) which control the flow of oil to the swashplate adjusting mechanism. A lever (22) attached to the piston projects into a slot (24) in the swashplate (5). When the piston is moved axially oil is admitted to move the swashplate. This turns the lever (22) which rotates the piston and thus moves the helical ribs to counteract the axial movement.
Patent DE-2659118-A1 (DE)
Title: IC engine exhaust section construction - has metallic wall with cement outer layer consolidated without cracking by heat developed during test run
Inventor: LEISTRITZ HANS KARL DR
IPC: F01N3/26
Filed: 1976-12-28
Abstract: The section of the IC engine exhaust system is particularly intended for a thermal reactor section or as a section immediately behind the engine exhaust or the first expansion chamber in a two-stroke engine. The metallic inner wall (2) of this section has an outer cover (3) formed fromm a pastelike material, possibly with fibre or fabric filling, such as asbestos cement or a ceramic mass. To achieve crackless setting of this cover, heat is supplied from the metallic inner wall (2) only so that inclusions, such as moisture from the cement, escape outwards to the lower-temperature region and to atmosphere. The setting process may be achieved by the heat developed during the engine test run or running-in prior to final inspection.
Patent DE-2659519-A1 (DE)
Title: Plastics covered metal tube connection - has elastic locking cap on sleeve edge with inner edge of cap including tongue G-shaped recesses
Inventor: VAHLBRAUK KARL HEINZ
IPC: F16L58/18
Filed: 1976-12-30
Abstract: The coupling for plastic covered metal tubs includes a sleeve which receives an insert tube end. A seal is fitted in the gap between the sleeve inner wall and the outer wall of the inserted tube. A ring-shaped locking cap of elastic material open to the receiving gap is obtained, on the sleeve edge. The cap engages over the receiving gap aperture and at least a part of the seal. Its inner edge, running between the seal and the outer wall of the inserted tube end, is divided into tongue-shaped recesses distributed around its circumference.
Patent DE-2701381-A1 (DE)
Title: Ceramic inlet guide roll for high speed rolling mill - where water drives turbine rings rotating guide roll at very high speed
Inventor: LOTZ WERNER
IPC: B21B27/03
Filed: 1977-01-14
Abstract: Guide roll for the inlet guides on rolling mills, esp. where bar or rod travels through a pair of guide rolls at high speed. The roll is made of oxide ceramic and is mounted on two ball bearings sepd. by a gap in which two turbine rings are located. Both turbine rings contain curved radial channels (a) ending in the gap between the bearings. The bore of the roll pref. has a double conical projection used to locate the turbine rings and the bearings. The inner races of the bearings are located on a stationary shaft contg. outlet slots for a pressurised liq. entering channels (a). The roll is pref. made of sintered corundum, sintered ruby, or hard nitrides, e.g. reaction sintered-or hot pressed- Si3N4. The roll has a long life, even when working at >20,000 r.p.m., and is not stationary when a new rod enters the pair of guide rolls, due to the turbine drive, which also provides lubrication.
Patent DE-2706984-A1 (DE)
Title: Spring loaded shock absorbing friction brake - has leaf spring loaded eccentric friction roller with spring loaded lever
IPC: F16F15/04
Filed: 1977-02-18
Abstract: The spring loaded shock absorbing brake of relatively simple design has a lever (2) pivoted in a support (1). This lever carries at one end an eccentric roller (3). Part of the roller surface is in contact with leaf springs (5) held in the support by spring ends. A tension spring (7) is connected to the lever free end and the support holding the lever in neutral position. On movement, the roller is raised and the contact force against the leaf spring is increased and damping is ensured by friction between roller and leaf spring.