baber/WOPTO huggingface dataset:
Patent DE-2733383-A1 (DE)
Title: Automatic sampling and metering pipette for laboratory work - in which easily dismantled appts. transfers small quantities completely with accuracy
Inventor: SCHUMANN KLAUS DIPL ING
IPC: G01F11/00
Filed: 1977-07-23
Abstract: A metering appts. with a pipette and a pipette column movable vertically by a rocker arm and rotatable on its vertical axis by a jointing linkage, has an arm on the column carrying the pipette and connected to a suction cylinder. The column consists of a guide bar anchored securely to a baseplate, on which a lifting tube is free to slide and turn under the control of the operating mechanisms. A crank and a rocker arm bring about a motion along a path following a loop, and the suction cylinder is positioned inside the lifting tube above the guide bar. The rotary motion of the lifting tube is brought about by a linkage including a ring from which two journals project, sitting loosely on a ring fixed to the tube. The fixed ring has two flanges to a flat ring resting on the bottom flange of the ring fixed to the lifting tube; a fork from the flat ring engaging with a vertical rod standing parallel to the column on the linkage. between the ring of the rotary motion and the ring for the lifting action there is a compression spring fitted. The driving shaft has a crank formed by a journal offset to the centre of a disk. The journal carries a ball bearing and moves in a long slot in the rocker arm. The lifting tube is in two sections. The lower carries the details for the lifting and turning motion, whilst the suction arrangement is enclosed in the upper section. At its free end the piston rod of the suction cylinder has a centralising device which comes into contact with the end cover of the tube. The suction cylinder is attached to a sliding block and between the top of the cylinder and the lifting tube cover, enclosing the piston rod there is a compression spring. The pipette arm extends through a long slot in the upper section of the lifting tube into the sliding block and there is a channel from the pipette through the arm and the block into the cylinder. Beneath the sliding block, with a spacer ring between them, there is a removable stop ring. The lower end of the slide block is machined down to give a journal with flats forming a nose, whilst in the guide bar there is a corresponding slot, and these engage with each other only in the suction position of the lifting tube. Transfers small quantities of liquids from one vessel to another in very accurate amounts without bubbles. The apparatus is cheap to manufacture, easily dismantled and reassembled.
Patent DE-2737072-A1 (DE)
Title: Cracked gas producer and engine control - by microcomputer changing prim. to sec. air ratio
Inventor: PAUL BERNT DIPL PHYS DR
IPC: C10G11/22
Filed: 1977-08-17
Abstract: In a control system for a cracked gas producer in which liquid fuel with primary air and recycled exhaust gas is converted to cracked gas, and for an internal combustion engine in which cracked gas is burnt with secondary air, chemical resistance and lower coast than conventional layers (3) in similar cells.
Patent DE-2738910-A1 (DE)
Inventor: KUEBLER ULRICH ING GRAD
IPC: H04J1/08
Filed: 1977-08-29
Abstract: When changing from a first carrier frequency system to a second carrier frequency system of a different type, the switching through of single voice channels or groups of channels (10, 11, 12) presents a problem. In the invention, the basic group of the first carrier frequency system (GP1) is obtained in accordance with the premodulation principle whereas it is obtained in accordance with the pregroup modulation principle in the second carrier frequency system (GP2). The basic group of the first carrier frequency system (GP1) is converted with one of its channel carriers (KT1) in such a manner that the voice channel or the group of channels (10, 11, 12) to be switched through is placed at the frequency of a circuit switching filter (D). The frequency band filtered out by means of the circuit-switching filter (D) is directly converted into the desired frequency of the basic group of the pregroup system (GP2) by means of a carrier of the premodulation system (KT2). <IMAGE>
Patent DE-2751506-A1 (DE)
Title: Rotary and impact drill ratchet mechanism - has ring with teeth sloping at 20 degrees and flanks at 45 degrees
Inventor: STILTZ ERWIN DIPL ING
IPC: E21B6/06
Filed: 1977-11-18
Abstract: The rotary and impact drill has a ratchet mechanism which includes a stopped sleeve (3) with a ring of ratchet teeth (2) at one end, on a face at right angles to its axis of rotation. This sleeve is designed for rotation in either direction. The contact face (4) of each tooth slopes at an angle of about 10 deg. to the vertical face, and the flank (1) slopes at an angle of 45 deg..
Patent DE-2752749-A1 (DE)
Title: Contacting device for matrix of contact prongs - uses spring contacts in multiple element insulation allowing wide tolerances
Inventor: PRUSSAS HERBERT DIPL ING
IPC: G01R31/04
Filed: 1977-11-25
Abstract: A device is used for simultaneously contacting a number of contact prongs projecting from one or more components in parallel to each other and in a rectangular matrix with individual point position tolerances uses contact springs projecting from insulating material. Each pair of spring contacts makes contact with both sides of a contact prong. It is designed for simple construction and to ensure that contact is made for large position tolerances. The insulation is made up of strips with cut-outs for mean spring sections. Neighbouring spring contacts are bent toward each other.
Patent DE-2753285-A1 (DE)
Title: Seal esp. for gas meters - has hooked locking arms on plate attached to seal body by break point
Inventor: SCHULZ WILFRIED DIPL ING
IPC: G09F3/03
Filed: 1977-11-30
Abstract: Seal, esp. for gas meters, has an oval disc-shaped body to which resilient hooked arms are attached. The arms extend perpendicularly to the plane of the body, and a break point is positioned between the arms and the body. The arms (34) are formed on a circular plate (30) attached to the centre of the seal body (10) by a neck (32) which forms the break point.
Patent DE-2753950-A1 (DE)
Title: Wear sensor for electrically operated brake or clutch - has electrical contacts on relatively movable parts of transmission of multispindle lathe
Inventor: MCCONNELL EDMUND ALEXANDER
IPC: F16D66/02
Filed: 1977-12-03
Abstract: The monitoring arrangement is used for brakes or clutches having two axially relatively sliding parts. This is used for electrically actuated friction clutches or brakes in multispindle lathes. In case of wear in the clutch which exceeds a certain extent an element in the clutch comes in contact with a similar part for closing an electric circuit for producing a signal. The clutch parts can be connected with a working spindle of a lathe which are all connected with a signal generating system.
Patent DE-2757586-A1 (DE)
Title: Sodium formyl-cyanamide, used as heterocycle intermediate - prepd. from sodium hydrogen cyanamide and formate ester
Inventor: WEISS STEFAN DIPL CHEM DR
IPC: C07C233/00
Filed: 1977-12-23
Abstract: Sodium formyl-cyanamide of formula Na circled positive H-CO-N circled negative-C=N (I) is new. It is characterised by an elemental analysis corresp. to the formula and by having m.pt. 256-7 degrees C. (I) is a synthesis reagent, e.g. for prodn. of heterocycles from o-phenylene diamine derivs., in the prepn. of plant protectants, pesticides and drugs.
Patent DE-2802180-A1 (DE)
Title: Double-walled plastics domed skylight - divided into airtight compartments and having beaded flange for easy fixing
Inventor: ESSMANN PETER
IPC: E04D13/03
Filed: 1978-01-19
Abstract: Plastics, domed skylight comprises a relatively flat box and has a flat flange moulded on along its entire perimeter. The flange has bead moulded on near its edge. It can be easily and securely installed without recourse to expensive and complicated profiled mountings. The flange also serves to seal the interior of the box which is compartmented by partitions. In its mfr. a prefabricated box is heated before shaping but the compartments are sealed airtight before shaping. Sealing is effected by pressing the flanges of the two superposed halves of the box together. The final shaping into conventional skylight configuration is carried out by application of compressed air, pref. in the central region of the box.
Patent DE-2805439-A1 (DE)
Title: Decorative display stand comprising cardboard boxes - having double grooved side edges for reinforcement and taking push=in connectors
Inventor: TONHAEUSER HARRY L
IPC: A47F5/00
Filed: 1978-02-09
Abstract: The folding cardboard boxes (1), which can be connected to furtherboxes, have at least one decoration wall (18). Two side edges of the box are provided with a double channel (5) of which one forms the reinforcement channel (12) for the decoration wall (18) whilst the other part of the channel forms the slot-in groove (13) designed to guide and hold the slot-in connecting element. Each box can comprise two interconnected symmetrical moulded parts (3, 4) of flat cardboard or the like with each part having a decoration wall (18) with the double channel on one side edge.
Patent DE-2805822-A1 (DE)
Title: 3-Amino-propionitrile derivs. prepn. - by reacting amine with acrylonitrile in presence of polar catalyst
Inventor: PLABST DIETER DIPL CHEM DR
IPC: C07C209/48
Filed: 1978-02-11
Abstract: Prepn. of 3-aminopropionitriles of formula R1R2NCH2CH2CN (I) is carried out by reacting 1 mole of an amine of formula R1R2NH (II) with 1 mole of acrylonitrile (III) in the presence of a catalyst comprising a 1-4C alcohol and/or H2O and/or a dialkylcarboxamide. In the formulae, R1 is 1-20C alkyl or alkenyl, cyclohexyl, benzyl or phenylethyl and R2 is H or 1-20C alkyl or alkenyl, or NR1R2 is piperidino, pyrrolidino or morpholino. Catalytic hydrogenation of (I) gives propylene diamine derivs. useful for preparing quaternary fabric softeners and fibre-treating agents. Unlike prior art acid catalysts, the above catalysts do not interfere with the subsequent hydrogenation. The process gives high yields (e.g. 82-98%) at normal pressure.
Patent DE-2806695-A1 (DE)
Title: Periodic signal measurement and evaluation technique - samples and stores signal and then reconstructs it from stored digital data
Inventor: BODY ISTVAN
IPC: G01R13/34
Filed: 1978-02-16
Abstract: The signals vary quickly and are sampled, the samples then being converted into digital form, and a digital signal value series, relating to at least a whole sampling period is stored. Starting from the stored digital data a period of the electric signal is produced by the numerical approximation method, and possibly recorded. The output of the pick-up device (1) passes through a digital converter (2) to a signal form memory (3) before reaching an object processor (9). Each of these units is regulated by the same control link (15).
Patent DE-2812208-A1 (DE)
Title: Large diameter cable mfr. - with the strands twisted into bundles before cable twisting to preserve protective claddings
Inventor: HOFFMANN ERNST ING GRAD
IPC: H01B13/02
Filed: 1978-03-20
Abstract: In the mfr. of large dia. cables, the strands are first formed into bundles and fed through a stretch defined between two fixed points. The bundles are secured at each of these two points, and then twisted from the centre in the required direction of twist. The process allows the various strands to be combined in a large dia. cable, without damaging the insulation or corrosion prevention layers on the strands.
Patent DE-2822097-A1 (DE)
Title: Pneumatic coupling for motor vehicle air conditioner - has elastomer embedded plate with trapped nozzle for connecting pneumatic hoses
Inventor: FEICHTIGER DIETER
IPC: B60H1/00
Filed: 1978-05-20
Abstract: The elastomer material coupling is for pneumatic systems, esp. for air conditioning in motor vehicles. The coupling has channels for pneumatic connection of elastic pipelines. Fixed plate inserts (2) are embedded into the elastomer material. Openings (8) in the region of the bore (4) are greater than the bores, each with a connection nozzle (11) to join a flexible pipeline (7). The connection is provided by a collar (12) which is greater than the bore and slightly smaller than the opening in the insert. The collar is situated behind the insert in the direction in which the pressure of the nozzle is exerted.
Patent DE-2832455-A1 (DE)
Title: Reacting and/or sintering ceramics in mfg. electronic components - using simple electronic program control circuit for partial oxygen pressure and temp. in furnace
Inventor: SCHMELZ HELMUT DIPL PHYS DR RE
IPC: H01L41/39
Filed: 1978-07-24
Abstract: The components consist of posistors, varistors, barrier layer capacitors, piezoelectric elements, etc. During reaction and/or sintering, the actual partial oxygen pressure (PaO2) is adjusted according to the momentary desired temp. (T ref) of the ceramic and according to a time-temp. program. The program is obtd. via >=1 programmable pocket calculator fed with values of T ref and the desired partial oxygen pressure (PrefO2). The calculator is pref. connected via an interface circuit to variable gain amplifiers providing control signals e.g. to flowmeters feeding O2 and N2 into the sintering furnace. A ZrO2 probe is pref. used to measure PaO2 and create a signal fed to one VGA for comparison with the momentary desired value of PrefO2. The electrical properties of reacted ceramics and/or the sintered mouldings made from the ceramics, depend on PaO2 during reaction and/or sintering. The invention provides a very simple electronic programmer adusting PaO2.
Patent DE-2835039-A1 (DE)
Title: Wire winding spools on indexing mounting plate - are placed on location flanges with radial wire clamping slots
Inventor: WEBER GOTTFRIED DIPL ING
IPC: B65H67/048
Filed: 1978-08-10
Abstract: An automatic wire coiling installation includes a circular index plate (13) which carries two driven spool locations flanges. When the spool on the left side of the index plate (13) is full, the plate rotates 180 deg. in order to replace the full spool with an empty one. As the full spool arrives at the unloading station, the radial wire end clamping slots (3) in the spool location flange are open. The wire (1) is then cut so that the full spool can be removed from the coiling flange. The leading wire end is then transferred into the empty spool where it is retained by the radial clamp slots (3).
Patent DE-2843507-A1 (DE)
Title: Noise suppressing exhaust mixer for ducted-fan, turbojet engine - has annular corrugated duct positioned coaxially with sleeve including concentric bulb-shaped plug
Inventor: NEAL BRIAN
IPC: F02K1/38
Filed: 1978-10-02
Abstract: The mixer assembly includes a sleeve, a bulb-shaped plug disposed concentrically within the sleeve, and an annular corrugated mixer duct coaxially positioned between the plug and sleeve. These components are arranged to receive the primary and fan flows and separately redirect these flows within the assembly so that the flow of primary gases is rearwardly divergent while the flow of fan air is rearwardly convergent. The shaping and dimensioning of the sleeve, plug, and mixer duct are such that optimum mixing is achieved without introducing any excessive pressure losses in the mixer assembly and nozzle.
Patent DE-2850547-A1 (DE)
Title: Bag valve opening installation - is used for bags of crossover base type and operates with conveyor, suction device and holding device
Inventor: ACHELPOHL FRITZ
IPC: B65B43/26
Filed: 1978-11-22
Abstract: The installation is used to open the valves of bags of the cross over base type supplied intermittently by a conveyor installation working in a horizontal direction. The installation includes at least one suction device which draws up the sack bottoms fitted with valves and a device which holds the sacks in position supporting them below the bottoms containing the valves. The suction device attached to a rod system capable of being swivelled can be adjusted to higher end positions to correspond with different valve widths and the conveyor installation fitted with the holding device, being made to swivel round the adjustment path in a rhythm opposite to that of the suction device.
Patent DE-2903333-A1 (DE)
Title: Hydraulic forging press with fire prevention seal - which stops oil leaking from hydraulic cylinder onto hot workpiece
Inventor: ROSS KEITH
IPC: F16J15/00
Filed: 1979-01-29
Abstract: A forging die is located on the underside of a plate (a), fitted on its top surface with a vertical shaft mounted via. its top end in a piston driven vertically in a cylinder surrounding the shaft. Hydraulic oil is fed into the top end of the cylinder to provide the forging pressure via the piston. On the bottom end of the shaft, near a plate (a), is a sealing ring just below a drain hold for oil leaking down the cylinder. The drain hole leads to an oil collecting tank. The ring is pref. fitted on the bottom end of the cylinder and contains an elastic sealing ring which is prestressed so it remains in contact with the shaft even if some mal-alignment occurs.
Patent DE-2908501-A1 (DE)
Title: Colour correction system for video recorder - compares phase and amplitude of reference signal in horizontal synchronisation signal
Inventor: HORSTMANN WINFRIED
IPC: H04N9/44
Filed: 1979-03-05
Abstract: A colour correction signal is introduced into the horizontal sync. period. This signal acts as a phase or amplitude ref. and by using this comparison ref. an error signal can be prod. The carrier frequency for the ref. is the same as the colour subcarrier and the amplitude of the signal is 0.4 to 0.6 of the peak to peak video signal. The reference is independent of any amplitude fluctuations of the colour sync. signal. The ref. signal may be at black level or between black and white lever in the sync. pulse interval. It is applicable to monochrome, SECAM, NTSC and PAL systems and can be used for automatic equalisation of signals being replayed from video tape recorders, esp. to avoid carrier inversion of highly saturated colour signals.
Patent DE-2911172-A1 (DE)
Title: Postage stamp drying press - comprises perforated base and cover plates with drying boards in between
Inventor: HAHN RICHARD
IPC: F26B5/16
Filed: 1979-03-22
Abstract: The postage stamp press has drying boards (4) through which air flows, and comprises perforated base and cover plates with the boards between them. Air circulates through them, and is guided by angle pieces (3) at the corners. The boards can comprise two perforated plates with embossed structure, together forming air passages and slots and covered on both sides with interchangeable absorbent material. Alternatively, open-mesh tissure can be used to form the boards.
Patent DE-2914588-A1 (DE)
Title: Test unit for sawdust extractor spark alarm - simulates flying sparks by diode emitted flashes with accurate rise and fall rates
Inventor: SCHIERAU KLAUS DIPL ING
IPC: G08B29/14
Filed: 1979-04-10
Abstract: The spark detecting alarm is for a sawdust extractor which is tested by light flashes of accurately defined waveform and intensity which simulate standard sparks flying past the detector in the duct. An amplifier drives light emitting diodes in the duct and feedback from a monitoring photo-diode makes the light intensity follow the driving waveform. A square wave (R) is integrated and limited to form a trapezium wave (Tr) and this is integrated to form the driving waveform (In). The essential features of the waveform are the linear rising (t1-t-2) and falling (t4-t5) slopes and the round transitions (t0-t1, t2-t4, t5-56). For calibration purposes, the waveform amplitude is adjustable and measured by a peak voltmeter.
Patent DE-2915144-A1 (DE)
Title: Data sheet holding frame - has one-piece window edge with offset guide slots for sheets
Inventor: MOELTER PAUL
IPC: B41L47/02
Filed: 1979-04-12
Abstract: The holding frame is for sheet-type data indicators, particularly in addressing machines. The machine includes an edge enclosing a window and with parallel slot-type guides holding the indicator. The frame edge is made in one piece, the slots being offset from and not in line with each other. The guide in one plane can extend right round the window without interruption, being joined by ribs to the frame edge. That in the other plane, set back from the window, can be formed by tongues alongside each other.
Patent DE-2919367-A1 (DE)
Title: Sand washer and separator - has rake assembly operating above inclined bottom in swinging motion
Inventor: FRESENIUS JUERGEN DIPL ING
IPC: B03B5/50
Filed: 1979-05-14
Abstract: The sand washer/separator consists of an inclined bottom (2) with a rim at the one end of which the water contg. the sand admixture is introduced. Inside the basin with a sloping bottom created in this way there is a trough acting as an overflow for the fluid part of the mixture. Above the sloping bottom (2) there is a rake assembly (3) with lateral rake elements (4). It operates in a swinging motion in such a way that during the downward motion of the rakes the elements travel parallel to the sloping bottom while during the upward motion the path of the rake elements is an arc. The swinging movement of the rake assembly is produced by the operation of linkage (5) driven by a sliding pin drive (6) connected to a hydromotor receiving its driving fluid from a pump.
Patent DE-2920075-A1 (DE)
Title: Hydraulic tappet for IC engine control valves - has ball between tappet and cam, acting as piston in oil-fed cylinder in tappet
Inventor: TOELGYESI ANDREAS
IPC: F01L1/245
Filed: 1979-05-18
Abstract: The valve-controlled IC engine has tappet-actuated valves with a roller device between tappet and operating cam periphery. The roller device, pref. a ball (2.1), runs in a matchingly profiled groove (1.1) around the cam. It has an axial clearance in its housing in the tappet (4), from which internal passages connect to a peripheral groove (7) about halfway along the tappet cylindrical guide surface. This groove communicates continuously with another passage (8) through a guide sleeve structure (5) carrying a pressurised lubricant supply. The passages in the tappet may embody a throttle or a non-return valve, whose spring abuts the ball via a slider.
Patent DE-2924070-A1 (DE)
Title: Control system for speed synchronisation of separate drive motors - has difference detector coupled to threshold stages controlling feedback correction loops
Inventor: ALZINGER ERWIN DIPL ING DR
IPC: H02P5/50
Filed: 1979-06-15
Abstract: The closed loop control system is used to synchronise the speed of two separate drive motors. The angular velocities (W5,W7) of two motor units (1,3) are monitored to produce proportional voltages (55,57) that are summed (15) to generate a difference signal. A control unit (17) responds to threshold values to generate correcting signals to control switching stages (T5,T7). The outputs of the switching stages are fed back to summing functions (23,25) for addition or subtraction from the command value (Ewo), to provide synchronisation of the drive motors.
Patent DE-2933332-A1 (DE)
Title: Laminated resin impregnated sheets - prodn. by passing through pressure rollers oven cooling area and final rollers
IPC: B29C70/50
Filed: 1979-08-17
Abstract: A laminated web is produced from resin-impregnated sheets using pre-pressing, final pressing, heating and cooling equipment. The pre-pressing part is continuously driven pressure rollers, a pressure chamber is attached to the rollers and has also outlet rollers, the chamber has top and bottom heated platens and at least one pair of pressure rollers; top and bottom cooling platens are located before the outlet rollers. Continuous process, prod. is free from deleterious air occlusions, not affected by faults in the materials used.