baber/WOPTO huggingface dataset:
Patent GB-1366946-A (GB)
Title: Distance relays
IPC: H02H3/38
Filed: 1971-12-13
Abstract: 1366946 Protective systems BBC BROWN BOVERI & CO Ltd 13 Dec 1971 [14 Dec 1970] 57800/71 Heading H2K A polyphase distance relay has for each phase two "measuring" elements 1, 2, each arranged to provide an output signal when the phase displacement between two input signals is below a predetermined value, and means 3 responsive to the outputs of both elements 1, 2 to provide a tripping or indicating signal, the element 1 comparing voltages, one having the form of VR-IRZA-3K0I0ZA and the other having the form of Vs-IsZA-3K0I0ZAŒP(VT-IT-3K0- I0ZA) and the element 2 comparing voltages, one having the form - VR + IRZA and the other the form of Q.V0 - 3K0I0ZA where VR and IR are the voltage and current of the respective phase and Vs, VT and ISIT are those of the other phases, V0 and I0 are the zero sequence voltage and current, ZA is a replica of the impedance of the protected line, and K0, P, Q are constants. The voltages are derived from current transformers 4 with replica impedances KA and auxiliary transformers 9... 10, and also from voltage transformers 11 with auxiliary transformers 12 ... 17. The elements 1, 2 may each comprise a filter, an amplifier and a level detector for each voltage, the outputs from the level detectors being applied to an AND element, an integrator and a further level detector, Fig. 2 (not shown). The means 3 includes an AND element.
Patent GB-1140338-A (GB)
Title: Motor road vehicles and windscreen wiper systems therefor
IPC: B60S1/04
Filed: 1967-12-21
Abstract: 1,140,338. Windscreen wipers. GENERAL MOTORS CORP. 21 Dec., 1967 [3 Jan., 1967], No. 58087/67. Heading A4F. In a motor vehicle the windscreen wiper arm and blade assemblies 28, 30 are parked in an elongate chamber 24 which extends across the vehicle adjacent the lower portion of the windscreen and is bounded by a portion of the vehicle scuttle 16, a rear portion of the bonnet 12, and a seal chamber 36 which is compressed between the bonnet and the scuttle when the bonnet is closed, the chamber 24 serving as an air inlet of a ventilation system of the vehicle.
Patent GB-1427950-A (GB)
Title: Dc motor circuits
IPC: H02P1/22
Filed: 1973-12-18
Abstract: 1427950 Control of D.C. motors LINDE AG 18 Dec 1973 [22 Dec 1972] 58613/73 Heading H2J A control circuit for a D.C. motor comprises a delay switch whose operation determines a minimum time interval between successive increments of voltage applied to the motor, and a switching device which is connected in parallel with the motor armature and is responsive to the polarity of the voltage occurring thereacross, the delay switch comprising a timing resistor and capacitor and the switching device being arranged to short circuit the capacitor to inhibit operation of the delay switch, when the polarity of the voltage across the armature is not that obtaining during normal motor operation, In Fig. 1 the D.C. motor has series field windings 11, 12 selectively energizable by contactors C11, C12 to produce opposite directions of rotation, the increments of voltage being produced by successive operation of contactors to shunt respective resistors (not shown) and the contactors being controlled by a delay switch composed of a number of identical elements of which only the first, comprising components r10, k1, n1, r20, r30, Th1, is shown. This element controls the coil C1 of the first of the contactors and is prevented from energizing the coil to produce the first voltage increment, if the end 17 of the armature 14 is positive with respect to the end 15, as for example occurs when the motor is being driven by its load or reverse-current braked. Such a condition produces across the armature 14 a voltage of polarity to energize the coil 20 of a relay, whose contact 21 changes over to shunt the capacitor K1 of the delay switch element and so prevent the closure of a switch 62 from causing the firing of thyristor Th1 after a time delay determined by the time constant of circuit r10, K1 and the setting of divider r20, r30, the member n1 being a programmable uni-junction transistor responsive to these elements. When the motor has stopped or decelerated, end 15 becomes positive with respect to end 17, the coil 20 is de-energized and contact 21 changes over to allow operation of the delay switch and energization of the coil C1 to shunt the first resistor and so produce the first voltage increment. The diode 19 may be omitted if a polarized relay is used, Fig. 2 (not shown), or both these members can be used together, Fig. 3 (not shown). In Fig. 4 the condition of end 17 positive with respect to end 15 produces forward and reverse biasing of diodes 31 and 32 respectively, to turn transistors 39, 34 respectively off and on whereby the latter shunts the capacitor K1. When the ends 15, 17 reverse polarity, the blocking and conductive states of members 31, 32, 34, 39 are reversed to allow operation of the delay switch.
Patent GB-1452100-A (GB)
Title: Bistable electromechanical transducers
IPC: H02K33/16
Filed: 1973-12-27
Abstract: 1452100 Electric watches GENERAL TIME CORP 27 Dec 1973 [29 March 1973] 59862/73 Heading G3T In a bi-stable electro-mechanical transducer for a watch and comprising a stator 51 wound with a coil 53 which receives low duty cycle pulses to drive a permanent magnetic oscillatory rotor, the rotor includes a holding pole 63 co-operating with pole faces of the stator to hold the rotor alternately in its two stable positions, and the air gap between the pole 63 and the stator is so arranged that the holding torque does not change significantly as these positions are approached. The mechanical tolerances are stated to be thereby much increased. As shown the rotor comprises a magnet 69 sandwiched between high permeability discs 59, 61. An extension of the disc 61 forms the pole 63 and the rotor staff carries a pallet lever 70 which advances a ratchet wheel. An extension 72 of the lever co-operates with a member fixed to the movement bridge (not shown) to define the stable positions. The coil receives alternating pulses derived from a high frequency oscillator.
Patent GB-1393560-A (GB)
Title: Abrading apparatus
IPC: B24C5/04
Filed: 1972-12-28
Abstract: 1393560 Blasting KINA ENG Ltd 12 Nov 1973 [28 Dec 1972] 59950/72 Heading B3D Abrading apparatus comprises an elongate hollow body 1 having a first inlet 12 for high pressure liquid, a second inlet 17 for an abrasive means, an element 4 having jet means 16 removably located in the body and connected to the first inlet and arranged such that, in use, high pressure liquid flowing through the jet means causes a partial vacuum for drawing abrasive material through the second inlet to form an abrasive slurry with the liquid, and an outlet for the resultant slurry. The inlet 12 is formed in the wall of the hollow body 1 to which is secured a tube 2 forming the outlet. The element 4 consists of a bobbin 4 located against a shoulder 5 in the body by a coupling 3 connectable to a source of abrasive, such as sand. The flanges 7 of the bobbin define an annular chamber 11 connected to the inlet 12 which, in turn, is connected by a conduit 13 and coupling 14 to a high pressure source of water. One flange 7 of the bobbin has a series of jets 16 inclined towards the axis of the apparatus, the water passing through the jets forming a partial vacuum to draw the sand through the bore 18 in the bobbin.
Patent GB-1207548-A (GB)
Title: Skittle alley with mechanical skittle setting-up mechanism
Inventor: SCHNITTER HORST
IPC: A63D5/08
Filed: 1968-12-17
Abstract: 1,207,548. Skittle alley with skittle setting- up mechanism. H. SCHNITTER. 17 Dec., 1968 [5 April, 1968], No. 60008/68. Heading A6D. A skittle alley comprises, a skittle setting-up mechanism which is actuable by a hand lever, an electrical coin-freed time switch having a releasable locking member which, when engaged, is disposed directly or indirectly in the path of the hand lever whereby the lever is prevented from movement which actuates the setting-up mechanism. As shown in Fig. 2, a hand lever 5 at the playing end of the alley is provided for actuating the skittle setting-up mechanism by means of a cable and an electrical time switch 6 adjoins it. A cylindrical member 7 integral with or fixed on to the lower end of the lever is pivotally mounted on a fixed shaft 8 and is provided with an external ratchet 9. A lever 10 is provided at one end with a pawl 11 and the armature 13 of the switch 6 rests on the other end of the 12 of the lever. The weight of the armature 13 causes the lever 10 to pivot whereby the pawl 11 engages the ratchet 9 and prevents the lever 5 from rotating. On insertion of a coin in the time switch 6 the electromagnet of the switch is energized and lifts the armature 13 for the predetermined period of play, enabling the pawl 11 to drop (due to the weight of the left hand arm of the lever 10) clear of the ratchet 9 and free the hand lever 5. In the other embodiment shown in Fig. 3 the pawl 14 at the end of the lever 15 remote from the fulcrum of the lever, rests under gravity in the ratchet 9 when. the switch 6 is not freed by a coin. On the insertion of a coin the electromagnet of the switch is energized and attracts the armature 13 upwards. The armature being connected to the lever, causes the latter to pivot in a clockwise direction and disengage the pawl 14 from the ratchet 14 and free the hand lever 5.
Patent GB-1277703-A (GB)
Title: Frequency controlled flux detector excitation
Inventor: ENGLEHOVEN CLARENCE ALVIN VAN
IPC: G01R33/04
Filed: 1970-12-29
Abstract: 1277703 Fluxvalve compasses COLLINS RADIO CO. 29 Dec 1970 [3 April 1970] 61529/70 Heading G1N In a fluxvalve compass, the frequency of an astable multivibrator 10 supplying the alternating drive current is automatically adjusted to maintain the point in each successive half-cycle of the drive current at which the core saturates at the midpoint of the half-cycles. As shown, a control flip-flop 20 is reset (by wave-form D, Fig. 2 (not shown) each time the drive current through winding 15 rises sharply on the occurence of saturation. This causes a triangle wave generator 25 to start on its downward half-cycle. Absolute null detector 22 sets the flip-flop 20 when the triangular wave (F) reaches zero, whereupon generator 25 starts on its upward half-cycle. Multivibrator 10 is synchronized to run at half the frequency of switching of flip-flop 20. Wave F is converted by capacitor 30 into an alternating wave (H) and the reference phase of a full wave phase detector 35 in the servo loop is controlled by a logic circuit in dependence on the zero crossing points of wave H and the state of flip-flop 20.
Patent GB-1259904-A (GB)
Title: A pyrotechnic device for freeing the central reefing line of a parachute
IPC: B64D17/52
Filed: 1969-12-18
Abstract: 1,259,904. Stress limiting devices. FRANCE ARMED FORCES MINISTER OF. 18 Dec., 1969 [19 Dec., 1968], No. 61849/69. Heading B8B. [Also in Division B7] A pyrotechnic device, for releasing the central reefing cord 1 of a parachute, has a member 2 to which the cord 1 is attached by a heat releasable union 4, the member 2 being connected to a housing 5 by a pin 6, the cord 1 being released when, at a predetermined load applied to it, the pin 6 breaks and a striker 3 moves to penetrate a pad 8 of, for example, varnish and ignite a friction and shock sensitive composition 7, the heat from which melts the union 4 and releases the chord 1.
Patent GB-1291080-A (GB)
Title: Improvements in hydraulically operated equipment
Inventor: LUCK DIETER GERHARD
IPC: E02F9/22
Filed: 1969-12-19
Abstract: 1291080 Scoop-arm machines D G LUCK 19 Dec 1969 62024/69 Heading E1F [Also in Division F1] A ram 6 operatively connected to an implement is supplied with fluid from a hydraulic circuit by which under overload conditions of the ram 6 fluid is by-passed to a motor 13 also operatively connected to the implement. The application is to an excavator in which the implement is a shovel and the motor 13 drives eccentrics, Figs. 3 to 5 (not shown), to give intermittent added force to the shovel. Under overload conditions a valve 12 opens to feed fluid to the motor 13 and operation of the eccentrics exerts further pressure on the shovel with a reaction on the ram 6 causing further build up of pressure which at a certain value operates a valve 15. If the further pressure is of short duration fluid flows through a line 17 and a throttle 18 to the reservoir 7 but if the further pressure is maintained the throttle 18 will not pass all the fluid which then operates a fast-opening, slow closing valve 20 to close the line to the ram 6 and pass fluid from the latter through the motor 13. The valve 20 may be omitted, Fig. 1 (not shown).
Patent GB-1291718-A (GB)
Title: Aerofoil-shaped blade for a fluid flow machine
Inventor: PALFREYMAN JACK
IPC: F01D5/14
Filed: 1969-12-19
Abstract: 1291718 Turbomachine blades ROLLSROYCE Ltd 8 Dec 1970 [19 Dec 1969] 62043/69 Heading FIT A turbomachine blade, e.g. for a gas turbine engine compressor, comprises portions 11 to 19 extending from the root to the tip of the blade, the portions normally contacting each other throughout their length but being relatively movable if the blade is struck by a foreign body. Each portion 11 to 19 is formed of laminations of, e.g. epoxy resin reinforced with carbon fibres, the portions being covered by layers of carbon or other fibres 24, 25 angled at 45 degrees to the longitudinal axis of the blade. A further layer of a covering material 26 is provided. The portions 11 to 19 merge with a common root (21), Fig.1 (not shown) and at their tip are housed within a common cap member (23). The portions may be lightly bonded together. The root (21) may be formed to permit limited pivotal movement of the blade under Impact. The blade may be for a rotor or stator.
Patent GB-726387-A (GB)
Abstract: 726,387. Ignition systems ; ignition sets. DAIMLER-BENZ AKT.-GES. July 28, 1953 [July 28, 1952], No. 20923/53. Class 7 (4). In a battery igni tion system comprising two or more ignitior coils 12 12<SP>1</SP> connected to respective distri buters 13, 13<SP>1</SP> by which the proper firing sequence of the sparking plugs 14, 141 is produced upon alternate energisation of the coils, each coil is arranged with its distributer, and preferably a contact breaker 11 or 11<SP>1</SP>, in a separate housing so as to form an individual unit, two or more or such units being combined to form a constructional assembly. The units are assembled coaxially one above the other and driven by the same shaft. The distributor rotor arms may be arranged adjacent one another.
Patent GB-2003872-A (GB)
Title: Preparation of diesters of oxalic acid
IPC: C07C67/36
Filed: 1978-08-31
Abstract: A process for preparing a diester of oxalic acid comprises bringing carbon monoxide into contact with an ester of nitrous acid in the presence of a catalyst containing metallic palladium or a salt thereof. The reaction may be carried out in the liquid or gaseous phase. An alcohol and molecular oxygen may be present. The ester of nitrous acid may be formed in situ from an alcohol and a nitrogen oxide or hydrate thereof. The ester is preferably the ester of a saturated mono- or di-hydric aliphatic alcohol, an acyclic alcohol or an aralkyl alcohol. The diester of oxalic acid that is produced may correspond to the ester of nitrous acid or to the added alcohol.
Patent GB-2016289-A (GB)
Title: Process and apparatus for producing an oil and water emulsion
IPC: F23K5/12
Filed: 1978-09-06
Abstract: In the production of oil and water emulsion the emulsion is created by atomizing opposing jets of water and oil against each other from nozzles 3 to 9 in a chamber 1 and then passing the resulting emulsion through one or more cavitation pumps, thereby causing the droplets of water in the oil to be further atomized and dispersed. The latter enables less water to be added, thereby improving efficiency while maintaining a very low degree of oil-coke development and achieves cleaner combustion. <IMAGE>
Patent GB-2025798-A (GB)
Title: Sheet Metal Box Lintel
IPC: E04C3/07
Filed: 1978-09-18
Abstract: A sheet metal box lintel can be formed by rolling from a single piece of sheet metal and securing the edges 5, 6. It can have its front wall 3 divided into upper and lower parts 7, 8 by a bend 9 which is strengthened by depressions 10 at the bend 9 and which extend on either side of the bend 9. <IMAGE>
Patent GB-2006813-A (GB)
Title: Hydrocracking Process for the Production of LPG
IPC: C10G47/16
Filed: 1978-09-29
Abstract: The present invention relates to the hydrocracking of hydrocarbon charge stocks boiling below 316 DEG C to produce LPG by the use of a catalyst comprising a Group VIII metal component combined with an extruded alumina-mordenite carrier material containing a substantially uniform distribution of 15 to about 40 weight percent of finely divided alumina particles, the mordenite having if necessary been treated to reduce the sodium content to less than 5 weight percent Na2O and subsequently having been treated with an aqueous ammoniacal solution at a pH of at least 9.5.
Patent GB-2009055-A (GB)
Title: A Floating Dock
IPC: B63C1/02
Filed: 1978-12-05
Abstract: A floating dock intended to handle yachts and other relatively small craft comprises a submersible load-supporting base platform A, at least one flotation chamber or tank associated with, or incorporated in, the platform, means for admitting air under pressure to each said chamber to displace water therefrom and means for permitting entry and discharge of water to and from each said chamber, whereby the flotation level of the load supporting platform can be controlled, and a plurality of stabilising floats or sponsons attached to the sides or corners of the platform. <IMAGE>
Patent GB-2014447-A (GB)
Title: Fire protection of buildings
IPC: E04B1/94
Filed: 1978-12-08
Abstract: A metal framework of a building comprising a plurality of structural support elements each of which is of at least partly closed cross-sectional shape and is connected to a valve controlled water system, the valve being controlled by a fire or smoke detector, selected ones of said elements being provided with water outflow openings.
Patent GB-2037993-A (GB)
Title: Dynamic gas pressure measuring device
IPC: G01L9/00
Filed: 1978-12-21
Abstract: Dynamic pressure fluctuations are sensed remotely by means of a transducer 7 communicating through a small hole in a wall of a duct 1 formed by a length of tube closed at one end 2 and open at its other end 3 to a space in which pressure is to be measured (for example, a high temperature region in a gas turbine engine). To ensure a resonance-free aperiodic frequency response characteristic, enabling dynamic pressure variations to be detected up to frequencies of several kHz, the hole is arranged closer to the open end than the closed end and an attenuation insert in the form of a rod or tube may be located adjacent the closed end. The transducer which may include an electrical strain gauge is protected from high temperature or other hostile conditions at the sensing point. <IMAGE>
Patent GB-2012894-A (GB)
Title: Improvements in Disc Brakes for Vehicles
IPC: F16D55/00
Filed: 1979-01-04
Abstract: In a disc brake for a vehicle, a shim 13 with low friction material (e.g. P.T.F.E.) is detachably interposed between pad assemblies 5, 6 and an abutment surface 10 in a caliper 1 which takes substantially the whole of the drag on the pad assemblies 5, 6 when the brake is applied. Shim 13 may be a metal plate of U-outline and coated with P.T.F.E., and formed with apertured lugs, 18 through which pad supporting removable pins 12 extend. There may be a further shim between pad assemblies 5, 6 and abutment surface 11. Limbs (15, 16) of the shim 13 may be deformed as shim is fitted into position (Figure 3, not shown). <IMAGE>
Patent GB-2039358-A (GB)
Title: Furnace controls
IPC: F23N5/18
Filed: 1979-01-09
Abstract: A control system for a furnace comprises an exhaust flue damper 28 driven by an electric motor 30 equipped with position indicating switches 32, the fuel flow through the line creating a differential pressure on a valve 18 raising it above the rest position. Electrical circuitry interconnecting the damper drive and position indicating switches 32 and a fuel flow detector switch 16 with a furnace thermostat and the fuel control valve 18, positions the damper in a closed position when there is no fuel flow to the furnace and in an open position otherwise and prevents energization of the fuel flow valve when the damper is closed. <IMAGE>
Patent GB-2042191-A (GB)
Title: Air or gas-flow detecting device
IPC: G01P13/00
Filed: 1979-01-18
Abstract: A gas-fired appliance having a fan-assisted airflow to its burners has a cut-out switch 18 for shutting down the appliance when the air flow is deficient. A pivoted vane 15 is moved by the flowing air to clear the switch 18 at normal air flows, the switch being operated when the air flow drops too low. Another embodiment described has a thermistor heated by a coil in the air flow, the resistance of the thermistor operating the cut-out when the air flow is reduced and the temperature of the thermistor consequently rises. <IMAGE>
Patent GB-2015773-A (GB)
Title: Hydraulic press
IPC: B30B15/26
Filed: 1979-02-20
Abstract: The relationship of force and ram travel of, for example, a cutting press is controlled in accordance with a desired pattern supplied by a data source 20 to an amplifier 19 controlling a quick- acting servo-valve (12). The valve directs a pressure medium to both an upper chamber (14) and a lower chamber (15) of a cylinder (2) to determine movement of a piston (3) carrying a ram (4). A pick up sensor (17) transmits the actual position of the ram (4) to the amplifier (19) which compares the actual position with the desired pattern. <IMAGE>
Patent GB-2013558-A (GB)
Title: Moulds for Moulding Plastics Articles
IPC: B29C33/00
Filed: 1979-03-13
Abstract: A mould for moulding plastics shells 10 for use in the manufacture of seating is described, the shells having a bottom surface 18 and parallel side surfaces 16 normal to the bottom surface, comprises cooperating mould parts 24, 26 with the surfaces of the mould cavity which correspond with the parallel side faces of the shell being slightly inclined to the direction of separation of the mould parts. The invention is applicable to the moulding of articles other than furniture. <IMAGE>
Patent GB-2017302-A (GB)
Title: Apparatus for Ultrasonic Imaging
IPC: A61B8/00
Filed: 1979-03-27
Abstract: Ultrasonic imaging apparatus comprises a portable scanning module including a liquid-filled enclosure (51) having a window (52) and a scanning reflector (70) which reflects ultrasonic energy from a transducer (80), focused by a lens (90), through the window (52), the arrangement of parts being such that the reflected ultrasonic energy doubles back past the transducer on its way to the window. The transducer is preferably of an elliptical elongate configuration and the reflective scanner and scanning window are of elongate form in the direction of scan. The window is of rigid material and is inclined with respect to the beam. In one form, the reflector is omitted, the ultrasonic energy from the transducer passing directly through the window (Fig. 6, not shown) with scanning being effected by oscillation of the transducer. The focus may be changed in embodiments using a segmented transducer (80) in conjunction with variable delays (100) and phase control circuits (120). <IMAGE>