baber/WOPTO huggingface dataset:
Patent DE-2434925-A1 (DE)
Title: Polyvinyl chloride recovery from plastic waste - by dissolving in solvent pptg. with non-solvent, sep. solid and recovering plasticiser
Inventor: HAFNER EDWIN A
IPC: C08J11/08
Filed: 1974-07-19
Abstract: PVC is recovered from plastic waste of article mfr. out of a PVC mixt., opt. contg. fillers and pigments, and a plasticiser mixt., opt. contg. stabilisers and emulsifiers, by (a) contacting waste with a solvent (I) for PVC under formation of a one-phase liq., pref. sepg. insoluble matls. by filtering, centrifuging or settling, and opt. concentrating filtrate, nb) contacting the liq. phase with a non-aq. non-solvent (II) for PVC, where (II) dissolves the plasticiser mixt., (c) sepg. the PVC mixt.-contg. solid phase from the plasticiser mixt.-contg. liq. phase, where (I) and (II) are miscible in one another, and pref. (d) fractionally distilling the liq. phase, to separate the plasticiser mixt. and recover (I) and (II), followed by classifying, washing and drying the plasticiser mixt. obtd. Method is useful for recovery of vinyl chloride polymers, plasticisers and opt. carriers for re-use in plastic compsns. Recovery of components is economical; process allows recovery of carriers, e.g., metal, paper, textiles and partic. woven fabrics; environmental pollution is prevented.
Patent DE-2438169-A1 (DE)
Title: Rotary off-set printing machine - with helically grooved transfer rolls has helically grooved rubbing rolls
Inventor: FISCHER HERMANN
IPC: B41F31/26
Filed: 1974-08-08
Abstract: In the main patent the accumulation of too much water in the inking system is avoided by the provision of shallow helical grooves in the surface of rolls (13, 14), which transfer ink from a first rubbing roll (9) to a second rubbing roll (20), the first rubbing roll being that to which water is applied by a roll (46) of the water system (35). The grooves extend in opposited hand helices away from the medial part of the roll. The improvement as in 2412127 provides that also the first rubbing roll is provided with helical grooves thereby to improve still further the water control.
Patent DE-2438435-A1 (DE)
Title: Mass prodn. plant for mfg. wood-wool slabs - by continuous moulding of large slabs which are finally cut in half
Inventor: ELTEN GERRIT JAN VAN
IPC: B28B13/06
Filed: 1974-08-09
Abstract: Plant for the continuous prodn. of light building slabs from wood-wool mixed with a hardenable binder such as cement, has a conveyor belt for the continuous movement of moulding plates fitted with sideboards; a device for the continuous spreading of the moulding mixt. on the moulding plates; a saw sepg. the mixt. at the butt-joints between the moulding plates; a stacking and pressing device for pressing and hardening the mixt.; and an extractor for removing the slabs from the moulds. The moulding plates, the stacking press and the extractor are designed for a slab which is a whole-number multiple of the dimensions of the finished slabs. The extractor is followed by a saw which cuts the finished large slabs into slabs (L) of the required final size. By moulding a slab which is e.g. twice the size of a slab to DIN 1101, output is raised, e.g. 8 large slabs are produced every minute and cut into 16 slabs; appreciable savings in energy and manpower are obtd.
Patent DE-2438506-A1 (DE)
Title: Nuclear substd. N,N-dimethyl-anilines prepn. - by reacting substd. nitrobenzenes with formaldehyde under reducing conditions
Inventor: HOCH HELMUT DIPL CHEM DR
IPC: C07D263/56
Filed: 1974-08-10
Abstract: N,N-Dimethylaniline of formula (I): (where R1,R2 and R3 are halogen, an aromatic residue, an aliphatic residue, -OR4, -COR4 or -NHCOR4 (R4 being an aliphatic residue), and R2 and R3 can also be H or -COOR5 (R5 being an aliphatic or aromatic residue), or adjacent residues R3 or R1 and an adjacent residue R3 can be linked so as to form a fused heterocyclic residue), e.g. p-dimethylamino-chlorobenzene or 3,4-dichloro-N,N-dimethylaniline, are prepd. by reacting nitrobenzenes of formula (II) with formaldehyde and hydrogen in the presence of a hydrogenation catalyst contg. one or more metals of atomic number 24-29 and of a weak organic acid at 35-250 degrees C under a pressure of at least 40 atmos. (I) are intermediate for dyes (esp. crystal violet dyes and reactive dyestuffs) and pesticides. They can also be used as stabilizers for unsatd. polyester resins (cf. BE 640930), and the halo-substd. dimethylanilines can be used as photoinitiators in photosensitive compsns. (cf. US 3515552 and 3539346) for the prodn. of galvanic metal coatings (cf. DT 934508) and in the prodn. of polymethylmethacrylate mouldings (DL17190) Provides simple and economical process giving (I) in better yields, purity and space-time yields than known processes. The process does not require expensive catalysts, and is suitable for large-scale use. Corrosion problems are avoided.
Patent DE-2440016-A1 (DE)
Title: Coal charging gases purification - for coke ovens in separate tender with combustion chamber, scrubbers and foul water tank
Inventor: HOELTER HEINZ
IPC: C10B27/04
Filed: 1974-08-21
Abstract: A coal charging car for coke oven batteries is hitched to a separate tender on its own chassis twhere the gases developed during the charging operation are purified. This tender is equipped with a combustion chamber which the gases traverse at a rate of travel of under 10 m/s and which is fitted with back-up flame openings and fresh air controls. This modular system facilitates the maintenance of the gas purification plant by simple exchange of any faulty tender. No foul water pumps are required thus saving in maintenance.
Patent DE-2442213-A1 (DE)
Title: Indirectly heated cathode for CRT - has insulating support carrying heating filament, surrounding sleeve and emitter
Inventor: HELD WALTER
IPC: H01J29/04
Filed: 1974-09-04
Abstract: The indirectly heated cathode is supported by an insulating support and has a heating filament, partly surrounded by a sleeve, and an emitter. All these elements are independently mounted on the insulating support (1). The sleeve (2) surrounding the heating filament (5) has an aperture, through which the emitter (7) can be heated by radiation, being mounted in front of this aperture. Preferably the insulating part is disc-shaped and has protrusions and/or recesses for retention of the cathode parts. The heating filament surrounding sleeve may be in the form of a hollow cylinder whose one open end is secured to the insulating support, the emitter being mounted at a small distance from the other open end of the sleeve.
Patent DE-2442970-A1 (DE)
Title: Synchronous ignition of fluorescent lamps - involves cathode preheating stage before application of ignition voltage to all lamps
Inventor: MAREK ALOIS DR
IPC: H05B41/04
Filed: 1974-09-07
Abstract: Ignition process is tripped by sudden interruption of a circuit whose current flows through cathode filaments and an inductance. A d.c. voltage source (3) is connected by its input to the a.c. mains; its rectified output voltage controls a relay--like element (4) control circuit; it makes contact (44) when operated to close the above circuit; a second switch (5) in parallel with the control circuit (400, 401) has storage properties, and its control electrode is connected to the output of a synchronised timer (6), connected by the closure of the main switch (2); after a certain time it makes conducting a further switching element (63); the timer (6) has means for short synchronisation pulse generation during zero crossings by the mains voltage; they are applied to the switching element (63) and pass through it as soon as it becomes conducting.
Patent DE-2451155-A1 (DE)
Title: Fleece sections of varying length - prepd by placing material on overlapping plates, and varying degree of overlapping
IPC: B27N3/10
Filed: 1974-10-28
Abstract: Fleece sections, esp. consisting of vegetable prods. impregnated with a binder, e.g. a glue, for board prodn., are produced by (a) spreading the fleeces on overlapping base plates of equal length, and (b) moving the individual base plates away from each other by successively accelerating each plate. In order to produce various lengths of fleece sections with constant shaping capacity, the base plates are moved with a greater degree of overlapping from below the spreading chambers to the device for separating the fleece into sections. The fleece is separated at the positions at which the rear edges of the overlapping base plates directed towards the fleece lie. The process enables the length of the fleece sections to be controlled by adjusting the degree of overlapping of the fleece sections. The greater the degree of overlapping the shorter is the length of the fleece sections.
Patent DE-2451707-A1 (DE)
Title: Engine with rectilinear piston motion - has internal sun wheel meshing with planet wheel on crank having piston mass-balancing weight
Inventor: VIGENER GUENTER
IPC: F01B9/00
Filed: 1974-10-31
Abstract: The engine is of the type comprising a sun wheel with internal teeth, secured in the crank case, with which a planet wheel carried on the crank meshes, the lower end of the piston rod being connected to the crank pin via a furter crank so that the rectilinear movement of the piston rod causes the planet wheel to roll around the interior of the sun wheel thereby rotating the crank shaft, all in accordance with the main patent. On the side opposite to the planet wheel the crank shaft is provided with a balancing weight which counteracts the effect of the piston mass. The planet wheel may be provided with a further balancing weight counteracting the effect of the first weight.
Patent DE-2452070-A1 (DE)
Title: Convection losses reducer in box-type sunlight absorber - in which taut horizontal strips of plastic stop convection currents forming
Inventor: RAETZ KARLHEINZ DR RER NAT
IPC: F24J2/04
Filed: 1974-11-02
Abstract: The usual type of sunlight collector is a box with a glazed front wall (d) and a rear wall (c) which is blackened to absorb heat. In this design, losses by convection are avoided by breaking up the convection currents in a raster of strips (b) of plastic film stretched horizontally across the box and kept taut by springy end-fastenings. The strips would preferably be sprayed with aluminium, to reflect the sunlight towards the heat-absorbing back wall of the box. The heat collected is taken up by an air current and used to warm water in a heat exchanger, and the box is preferably filled with dry air or nitrogen or, pref. carbon dioxide.
Patent DE-2461366-A1 (DE)
Title: Capture of effluent from metallurgical furnace - esp. when furnace mouth is rotated away from hood
Inventor: GAW RICHARD GERARD
IPC: C21C5/38
Filed: 1974-12-24
Abstract: A device for use with the exhaust hood of a metallurgical furnace to improve the capture of waste effluent gas comprises a member such as a plate for partially restricting the cross-sectional area of the mouth of the hood and which is carried by a pair of parallel tracks each extending beyond the hood so that the closure plate may be moved from a posn. remote from the mouth to a posn. adjacent to and partially restricting the mouth; The closure plate is maintained in its remote posn. when the furnace is maintained upright but when the furnace is rotated from the upright, e.g. for tapping, the closure plate is used to restrict the mouth so that there is an increase in the face velocity thus drawing effluent through the unrestricted mouth area so that effluent is captured and drawn int the hood.
Patent DE-2505885-A1 (DE)
Title: Emergency call device for electronic telephone exchange - has large number of call areas and transferrers with independent clock generators
Inventor: SCHMIDT MICHAEL
IPC: H04M11/04
Filed: 1975-02-11
Abstract: The emergency call device which may be used on an electronically -controlled telephone exchange, has a large number of call areas and there are large numbers of transferred devices which are provided with separate and independent clock generators. The separate and independently operating clock generators cyclically multiplex exchange information via the data line multiples. Each transmission direction has its own line multiple. The advantage of this type of connection between call areas and transferrers lies in its not requiring separate intermediate sub-assemblies. Typically there are two data line multiples, enabling two-way transmission of data.
Patent DE-2507000-A1 (DE)
Title: Rear-ventilated heat-insulated external wall cladding - with covering on additional batten substructure and foamed insulation in hollows
Inventor: DUHNKE HARTMUTH BERTHOLD
IPC: E04F13/00
Filed: 1975-02-19
Abstract: The cladding for the external wall facing of buildings incorporates a wall fixed substructure, comprising spaced vertically and/or horizontally aligned batten type units, with covering applied on the substructure and with the intervening hollow spaces filled with insulating material. A second covering is provided on a second substructure on the outside of the first covering. The insulating material fills the intervening spaces set between the two coverings, between the batten-type units making up the second substructure. The material between the two coverings may be one which is foamed in on the spot. Using inexpensive means, the advantages of a rear-ventilated external wall cladding are combined with those of an effectively heat-insulated one.
Patent DE-2509230-A1 (DE)
Title: Multiwall flexible pipe for feeding oxygen to blast furnaces - has hole in inner flexible pipe to prevent pressure surges
Inventor: MOPPES HARRY L VAN
IPC: C21B7/16
Filed: 1975-03-04
Abstract: Flexible pipe made of special steel and employed for feeding oxygen to a blast furnace, using an external casing of pressure-resistant plaited wire covering a sealed corrugated pipe which surrounds an aerodynamically smooth flexible pipe, viz. an Aglaf pipe, and with couplings on both ends of the pipe. Specifically the aerodynamically smooth flexible pipe is made of red brass (6-15% Zn) and contains >=1 pressure-relief ring provided with a hole, and a bent guide plate is fitted in the ring, leaving a gas between the hole and the guide plate. When the oxygen supply is switched off, a rapid build up of pressure can occur in the flexible pipe and this pressure surge can destroy the pipe. The pressure-relief ring prevents the surge.
Patent DE-2509322-A1 (DE)
Title: Friction clutch for double coaxial pulleys - governed by centrifugal force and manually operated selection lever
Inventor: DUEPMEIER WILHELM
IPC: F16D43/18
Filed: 1975-03-04
Abstract: The twin coupling for two independent drive pulleys on a shaft is governed by centrifugal force and a selector lever. Two externally tapered sleeves are located with a sliding fit between the pulleys on the shaft. The are kept apart by a compression spring (25). Each pulley carries a support (15) to which two diametrically opposite levers (11) are attached by means of hinged pins. The tapered lever ends come into friction contact with the two tapered sleeves when the centrifugal force in the pulleys swivels the opposite lever ends radially outwards. The selector lever is used to disengage the tapered sleeves from the friction levers (11) of one or both pulleys.
Patent DE-2509427-A1 (DE)
Title: Clamp for holding wire ready for soldering - bent arms fitting into hole carry clamping screw at top
Inventor: STUMPF HEINRICH
IPC: H01R4/36
Filed: 1975-03-05
Abstract: A clamp which may be used to locate a wire (12) before soldering it onto a hole in a component (10) is made from strip material which is bent to form a pair of arms, which carry between them a set of screw threads into which is inserted a screw (6), the arms having a looped portion (8) inside which the wire can be inserted, and terminating in two tapered ends (9) which are fitted into the hole. The screw is tightened to hold the wire in position, then the wire may be soldered to the component. The screw ensures that the wire is clamped in position so that it will not release due to vibration before it is soldered.
Patent DE-2510578-A1 (DE)
Title: Rotor shaft slip-ring assembly - ring slid onto shaft over insulator then compressed axially
Inventor: WAGNER LIONEL SALVADOR
IPC: H01R39/08
Filed: 1975-03-11
Abstract: The method of fixing a slipring to a rotor shaft of an electrical machine includes the steps of sliding the ring onto the shaft over electrically insulating material and applying a clamping force in the axial direction of the shaft to the ring to fix it in position.
Patent DE-2510679-A1 (DE)
Title: Semi-automatic circuit board pin insertion tool - uses pins which are fed down side channel to insertion point using compressed air and feed lever for correct spacing
Inventor: PFEIFER MICHAEL
IPC: H01R43/20
Filed: 1975-03-12
Abstract: An instrument is used for the semi-automatic insertion of contact pins, sockets, etc. into bores in circuit boards. The instrument has a plunger (3) which moves in a cylindrical bore, which is joined by an inclined side-channel (7) through which the pins to be inserted are fed so that they are held in position at the lower end of the main bore (2) in which the plunger moves until the plunger is forced down to enter them successively into the bore in the circuit board. The feed of the pins may be assisted by a compressed air feed through an air entry (9) and a feed lever (8) may operate in the side-channel to ensure proper spacing of the pins.
Patent DE-2510686-A1 (DE)
Title: Sequential packing of numbers of containers such as yoghurt containers - involves gripper truck with reciprocating gripper rails on ots underside
Inventor: AMMANN SIEGFRIED ING GRAD
IPC: B65B35/36
Filed: 1975-03-12
Abstract: The sequential packing machine packs equal numbers of containers which have a top projecting edge, especially yoghurt cups, which are supplied in aligned parallel rows using a linearly movable gripper track which on its underside has reciprocable gripper rails. It can move between a gripper and a delivery position where a carton is pushed from below over the containers which are delivered into the carton. A slide guide (3) of slide rails (3') is provided, in which the rows of containers (2) hang by their edges (4). The rails (10) are arranged transverse to the row direction (B) and have bottom projections (11), whose centre spacing (e) corresponds to the centre spacings of the containers but transposed by half the centre spacing. The rails can pivot about longitudinal pivot axes (5) which are transposed inwards relative to the instile the container row (A or E) to be gripped.
Patent DE-2513567-A1 (DE)
Title: Tennis racket tensioning system - uses spring bow and single endless string to ensure constant homogenous tension in net
Inventor: SCHAEFER HANS DR MED
IPC: A63B51/12
Filed: 1975-03-27
Abstract: Round a tensioning spring in the heart of the handle is threaded the net made from a single endless string which is threaded between the tension spring the guide rings fitted into the peripheral frame, so that the string can slide through the rings to automatically take up any slackness in the strings. This movement is assisted by the impulse to the strings provided by each blow of the racket whilst in use, so that the racket maintains a constant homogenous tension. The tension can be made variable by the addition to the base of the tensioning bow, of a screw nut on a rotating piston. Constant tension is achieved by adding to the base of the rotating piston by turning second cylinder holding a strong spiral spring which is compressed by the base of the rotating piston by turning the lower screw nut, thus kepping the tension constant.
Patent DE-2514364-A1 (DE)
Title: IC engine fuel injection timing system - injector leak off chamber is connected to pressure chamber and fuel filter
Inventor: GRUPP EBERHARD
IPC: G01L23/00
Filed: 1975-04-02
Abstract: An addition to 401538 whereby the fuel injection delivery timing to the combustion chamber is determined by the aid of a stroke lamp and a pressure chamber connect to two leak off nipples on the injector so that a pressure rise before the injector needle starts to rise can be detected. The addition is designed to vent the pressure chamber in order to avoid errors in the timing caused by air bubbles. The pressure chamber (9) is connected to the fuel filter so that a continuous air free fuel flow is introduced to the leak off circuit. The surplus fuel is led from a collection chamber (15) on the filter cover (12) via a union (16) back to the fuel supply tank.
Patent DE-2525698-A1 (DE)
Title: Appts determining adjusting and storing direction - designed esp for alignment of machine part e.g. drill or bucket boom
Inventor: THELE GUNNAR
IPC: E21B7/02
Filed: 1975-06-10
Abstract: A sensor element takes the form of a guideway which as a lowest point, is arranged in a vertical plane and has a closed cross section at right angles to this plane. This guideway is intended for a contact element, preferably mercury, which is sensitive to inclination and moves freely in the guideway. An oblong electrical resistance element (30) is laid with insulation in the guideway and is connected at both ends and by a centre contact to a circuit for measuring electrical resistance which contains an indicator and/or control unit. The guideway has in its plane an enclosed, preferably, circular, shape without sealed free ends.
Patent DE-2528493-A1 (DE)
Title: Programmed drop hammer force with belt lifting gear - includes induction switches and electronic timers in control circuit
Inventor: GASTINGER MARTIN
IPC: B21J7/46
Filed: 1975-06-26
Abstract: A drop hammer forge has a lifting belt (2) to which the forging hammer (1) is attached. The lifting gear includes a geared motor (4) a friction drum (3) and a belt clamp (5). A number of contact free, induction limit switches are located at the top and bottom end of the hammer stroke. The control circuits are placed in a cabinet where the forging vibrations are not felt. The sequence of the hammer blows and their intensity is controlled by electronic timers which determine the height to which the hammer (1) has to be raised. A progressive sequence switch ensures that the programmed forging pattern is followed.
Patent DE-2538223-A1 (DE)
Title: Pneumatic:hydraulic system for high cycle speeds - has inertia-balancing piston, and arrangements to maximise working stroke power
Inventor: KNAEBEL HORST ING GRAD
IPC: F01B11/02
Filed: 1975-08-28
Abstract: The pneumatic/hydraulic system for high cycle speeds comprises a conventional power cylinder (14) and piston (2), with unequal size rods (4a, 4b) and an auxiliary piston and cylinder whose working area is greater than the cross-sectional area difference between the rods (4a, 4b). An annular balance piston (12), bits between the power piston (2) and cylinder (14). its mass equals that of the other reciprocating parts (2, 4, 6) with which it is synchronised in opposition. The two pistons (2, 12) overlap at all times. The main piston actuates the independent timing valves (8, 10). These valves connect the working fluid lines (30) to the auxiliary cylinder and the space (14b) in front of the main piston. The spaces at the back of the piston (14a) and around it (14c) are under constant pressure.
Patent DE-2540033-A1 (DE)
Title: Safety fitting for hot water boiler - contains two safety valves arranged at right angles to each other
Inventor: GRUBER WALTER
IPC: F16K27/02
Filed: 1975-09-09
Abstract: The fitting has two safety valves and one non return valve. It has a body with a main flow passage. The body contains a valve seat for the non return valve at an angle of 45 deg. to the main flow. The valve seat of the first safety valve is parallel to the non return valve and displaced slightly from it. The seat of the second safety valve is at right angles to the first and at 45 deg. to the main flow. The connection for the discharge from the safety valves is between them at 45 deg. to each of them and at right anles to the main flow. The three valves screw into bosses above their respective valve seats.