baber/WOPTO huggingface dataset:
Patent GB-2083984-A (GB)
Title: Signal correction for electrical gain control systems
IPC: H03G1/00
Filed: 1980-09-06
Abstract: The present invention relates to an electrical gain control system which provides a first signal logarithmically related to an input signal, sums a gain control signal with the first signal; and then provides an output signal which is an antilogarithmic function of the sum of the gain control signal and first signal. In accordance with the present invention in order to at least partially compensate for errors in the output signal arising from inherent characteristics of the components of the system, the system is improved by comparing the input signal and the output signal; generating an error correction signal in response to the comparison as a function of the errors in the output signal; and summing the error corrections signal with the first signal and the gain control signal so as to reduce the error in the output signal.
Patent GB-2061836-A (GB)
Title: Apparatus for use with a perambulator to assist in lulling to sleep a baby carried therein
IPC: B62B9/22
Filed: 1980-10-27
Abstract: At least one rail (10) to be tracked by the wheels of the perambulator is provided on one or both sides thereof. A motor (13) has a drive shaft (14) connectible to an axle of the perambulator through a pivotal rod arrangement (15, 16, 17) whereby rotary movement of the drive shaft (14) causes reciprocable movement of the outer end of the rod arrangement (15, 16, 17) in a direction parallel to the longitudinal axis of the rail to move the perambulator towards and away from the prime mover (13). A safety panel 19 may be provided. <IMAGE>
Patent GB-2087171-A (GB)
Title: Static inverter
IPC: H02M7/48
Filed: 1980-11-05
Abstract: A static inverter using a high frequency transformer (13) with an alternating pulse width modulated square input (Figure 2D) voltage and capable of regenerative operation even with a reactive load by the avoidance of rectifiers in the secondary winding and having instead one or more bilateral switches (23) arranged to be operated in synchronism with the secondary voltage. The transistors of modulating circuit 14 are controlled by a source (16) of modulating high frequency of 25 KHz. A microwave output is obtained via a filter 22. In a modification (Figure 3) two transistors (41) are switched alternately by the source (16) and the output is obtained by switching bilateral switches (23) connected to toppings on the secondary of transformer (13) in sequence (1-6) so that from a pulse output (Figure 4C) a microwave output (Figure 4D) may be obtained from the filter 22. The bilateral switches may include a transistor (46, Figure 5) connected across a diagonal of a diode bridge (44). An alternative demodulator to the switches (1-6) has a single secondary winding with bilateral switches a, d, and b,c operated alternately to provide the a.c. output. <IMAGE>
Patent GB-2069158-A (GB)
Title: Exposure control using fill-in flash
IPC: G03B7/16
Filed: 1980-12-30
Abstract: In a camera employing fill-in flash and a pair of scanning type shutter blades 28 and 30 having primary and secondary apertures for exposure and exposure determination respectively, a photocell lens 64 of the defocusing type has an annular IR filter 41 which in cooperation with secondary apertures allows only IR-free light to detector 66 during strong ambient light conditions (requiring light or in flash) but allows IR-containing light to pass to detector 66 during strong flash illumination (under weak ambient light conditions). <IMAGE>
Patent GB-2068405-A (GB)
Title: Biodegradable detergent composition
IPC: C11D3/30
Filed: 1981-01-21
Abstract: A biodegradable detergent composition comprises an aqueous solution of the following active components:   A 2 to 35 parts by weight of a higher (C8-24) alkylphenyl polyglycol ether having from 5 to 25 glycol residues, or a mixture thereof,   B 5 to 35 parts by weight of an alkanolamine, and   C 0.5 to 6 parts by weight of a cation sequestering agent. s
Patent GB-2071895-A (GB)
Title: Coin discriminating apparatus
IPC: G07D5/08
Filed: 1979-05-09
Abstract: A coin discriminating apparatus comprises a path 14 for the passage of coins and is arranged to carry out first and second tests on the coin (when it is at positions I and II respectively). The first test provides a first test result indicating to which of a number of valid denominations the coin belongs and the second test is controlled, in dependence upon the result of the first test, to test the coin specifically for the valid coin denomination indicated by the first test result. The second test is carried out by applying an electrical pulse to a transmitting coil to subject the coin to the resulting magnetic field.
Patent GB-2072849-A (GB)
Title: Instrument dial
IPC: G01D13/02
Filed: 1981-03-25
Abstract: An analogue indicating instrument for an operating quantity (e.g. speed, temperature, pressure) having a coloured or patterned dial section (1) to distinguish a specific operating regime, wherein the dial section (1) extends into the surrounding dial area (10) with a plurality of wedge-shaped pointed teeth (2 or 3) to indicate a transition range between the operating regimes. <IMAGE>
Patent GB-2107671-A (GB)
Title: Platform lift
Inventor: MAY DAVID CHARLES
IPC: B60P1/44
Filed: 1981-06-08
Abstract: A load lifting and lowering platform 21 is pivotally suspended on the adjacent ends of the arms 23, 24, of a deformable parallelogram linkage. The other ends of the linkage arms are pivotted to a travelling chassis which, in use, moves back and forth out of and into a vehicle body serviced by the platform. One of the arms of the linkage engages a curved surface 28, and is forced to follow the curvature of that surface to automatically unfold or fold the linkage and thereby lower or raise the platform. The curved surface may be a rigid surface which can be swung up out of the way when the platform is stowed, or it may be a flexible bar as shown which can deform into a rigid curve to unfold the linkage and then progressively straighten again to fold the linkage. Preferably the deformable bar travels with the chassis into and out of the vehicle body, and in one particular embodiment the platform, bar, linkage and travelling chassis all slide forward into a box which is fitted into the vehicle floor and is removable as a self- contained lifting unit. <IMAGE>
Patent GB-2100593-A (GB)
Title: Device for supporting a patient in a sitting position on a hospital bed
Inventor: CHARMAN PETER WILLIAM
IPC: A61G7/07
Filed: 1981-06-26
Abstract: A device for supporting a patient in a sitting position on a hospital bed, for example, while the patient is being dressed, comprises a wheeled base (1), a column (4) mounted on the base, and a cantilever (6) projecting from the column and carrying at its free end a pair of arcuate padded arms (9) for encircling the patient to hold him or her in the sitting position. The arms can be swung open to be passed round the patient and are locked in the closed position. The cantilever is of telescopic construction and can be adjusted in the vertical direction on the column for locating the arms in a correct position to receive the patient. <IMAGE>
Patent GB-2079719-A (GB)
Title: Refuse collecting vehicle and packer mechanisms therefor
IPC: B65F3/20
Filed: 1981-07-06
Abstract: A refuse collecting vehicle has a crank-driven packer plate mechanism to transfer refuse from a loading hopper to a main load-carrying body. The packer plate (2) is engaged at opposite sides by respective crank arms that are interconnected by a tie bar (32) with respective pivot connections (30,34,36) to the crank arms at its opposite ends. Lateral forces on the crank arms are thereby resisted by the tie bar and uneven loading on the packer plate is better accommodated. To reduce the possibility of material in the hopper blocking free movement of the mechanism, the connections between the crank arms and the packer plate are screened. <IMAGE>
Patent GB-2092265-A (GB)
Title: Balancing Shafts
IPC: F16F15/22
Filed: 1981-10-26
Abstract: Unbalances are compensated for a crankshaft (2) for a V-engine or other rotary body which permits unbalance compensation only in structurally determined compensation planes (E1, E2 and E3, E4) and within restricted angular regions. The compensation is carried out in two steps (pre-balancing and post-balancing) in planes which are axially spaced. When the amount of initial unbalance in one compensation plane exceeds the maximum unbalance that can be compensated in said plane, a reduced weight compensation operation is performed in the first compensation step (pre-balancing) in another plane, which produces a residual unbalance in one of the compensation planes in one of the angular regions provided for weight compensation, said residual unbalance being compensated in the second compensation step. Additionally or alternatively, the unbalance compensation is performed in components. When the amount of initial unbalance as ascertained in one component exceeds the maximum unbalance that can be compensated in said component, a reduced unbalance compensation operation is performed in the first compensation step in the other component of the same compensation plane, thereby producing a residual unbalance in an angular region which is intended for the compensation operation and in which the residual unbalance is divided up into the compensation components provided. <IMAGE>
Patent GB-2112658-A (GB)
Title: A nonferrous metal recovering device
Inventor: KUCHIMURA MASAJI
IPC: C22B9/02
Filed: 1982-01-04
Abstract: A container (2) for molten metal is provided with upper and lower counter-rotating blades (5 and 6) rotatable about a common vertical axis for stirring the molten metal without causing the molten metal from rising up the wall of the container as a result of centrifugal force. <IMAGE>
Patent GB-2098292-A (GB)
Title: Modulators in anti-skid hydraulic braking systems for vehicles
IPC: B60T17/22
Filed: 1982-01-05
Abstract: An anti-skid hydraulic braking system for vehicles includes a modulator (3) which, in response to an incipient skid signal relieves the brake- applying pressure at a braked wheel by expanding the volume available to fluid from the brake (2). The modulator (3) provides a permanent connection between a master cylinder (1) and a brake-line to the brake (2). An expansion piston (40) thereof is movable in a first direction, drawing fluid from the brake-line and into an expansion chamber (42) through a first one-way valve (71), and introduces restrictive means (6) between the master cylinder (1) and the brake-line; the piston (40) moves in a second direction expelling fluid from the expansion chamber (42) through a second one-way valve (72). A change in pressure in a support chamber (43) in response to the skid signal permits the piston (40) to move in the first direction and, at the termination of the skid signal, the pressure in the support chamber (43) changes again to urge the piston (40) in the second direction, and the restrictive means (6) is removed preferably when the brake pressure is equal to the master cylinder pressure. In other embodiments (Figs. 3 to 7, not shown) the expansion piston is moved pneumatically, and differences in the layout of the modulator are described. <IMAGE>
Patent GB-2092271-A (GB)
Title: Liquid Propellant Delivery Systems
IPC: F16K11/16
Filed: 1982-01-26
Abstract: A liquid propellant delivery system for a rocket motor has at least one venturi for each liquid. The venturi is formed from a stationary member (11) and a rotatable member (16, 17), rotated by motor (29) and gearing (26, 27, 28) such that the passage from inlets (24, 25) may be throttled or closed. <IMAGE>
Patent GB-2115200-A (GB)
Title: Dental practice means
Inventor: BEACH DARYL RAYMOND
IPC: G09B23/28
Filed: 1982-02-05
Abstract: The present invention relates to means for enabling dental students to practice dentistry techniques. In the described embodiment, the means comprises an elongate console (1) having a number of student stations disposed along its length, along both of its sides. Each station is equipped with a model human head (6) having an oral cavity (7), dental equipment e.g. (12, 16), and a chair (18) pivotable about a generally vertical axis coincident with the oral cavity (7). At each longitudinal end of the console (1) is a raised platform (2) on which a chair (3) for an instructor is mounted. <IMAGE>
Patent GB-2104252-A (GB)
Title: Controlling tension in flexible material being unwound from a drum
Inventor: GREENE DAVID JAMES
IPC: B65H59/38
Filed: 1982-06-11
Abstract: The drum D is driven by a shaft 2 coupled to a reversible electric motor and is mounted on a freely pivotted arm 3 to which a tensioning bias is applied by a spring 6. The angle of the arm is sensed by a transducer 9, 10 connected as a variable input impedance to an amplifier which supplies the armature and/or field current of the motor. A resistance-capacitance circuit also in the input reduces hunting. The external drive for the material exerts a greater pull than that of the motor, whose direction of energisation is determined by whether the tension (i.e. the angle of the arm) is above or below a desired value. The material may be optical fibre. The motor is de-energised by a damped microswitch 12 if the fibre breaks. <IMAGE>
Patent GB-2107464-A (GB)
Title: Liquid level indicators
Inventor: VARGA OTTO HERMANN
IPC: G01F23/02
Filed: 1982-10-05
Abstract: A liquid level gauge having a vertical sight tube formed of one or more tube sections, 10, 10' each anchored by receiving in each of its open ends, top and bottom, a spigoted boss 15 over which the tube end is a sliding fit. Each said boss has an annular groove thereon, in which is seated a gland seal ring engaging the internal wall of the tube section, and each boss also has a passage 18 by which fluid may flow to and from the tube section into which it is fitted. The construction allows thermal expansion to occur e.g. during hot cleaning of gauges used with tanks of beer, wine or spirts. The bosses are arranged to direct downward flowing cleaning fluid on to each of the seals. <IMAGE>
Patent GB-2114606-A (GB)
Title: Tub to shell gaskets for washing machines
Inventor: HUCKER ALBERT CHARLES
IPC: D06F37/26
Filed: 1982-12-07
Abstract: The present invention relates to gaskets for front loader washing machines in which the gasket extends between, and seals the tub and the shell of the washing machine. A base (28) and side walls (24 and 26) of the gasket define an annular pocket (18). Two deflector webs (30, 32), peripherally offset from one another, are integrally moulded with a different side wall (24 or 26) and the base (28). The deflector webs (30, 32) are located at 60 degrees away from the lowest point of the loading opening of the washing machine in the direction in which the drum rotates such that when the tub is spun with an article of clothing partially trapped in the pocket, the article of clothing engages and rides over the deflector webs (30, 32) and is thereby expelled from the pocket. <IMAGE>
Patent GB-2113859-A (GB)
Title: Silver halide photographic material containing a cyan-forming coupler
Inventor: AOKI KOZO
IPC: G03C7/34
Filed: 1983-01-07
Abstract: A color photographic light- sensitive material contains a cyan dye forming coupler of general formula:   <IMAGE>  wherein X is phenylene, Y is   <IMAGE> R1 and R2 each is hydrogen, alkyl or aryl, or NR1R2 forms a 5- or 6- membered ring; R3 is alkyl, aryl or a heterocyclic group; and Z represents hydrogen or a group, e.g. Cl, capable of being released upon coupling with oxidized developing agent. Groups X, R1, R2 and R3 may have substituents. 21 Specific couplers are shown, with a synthesis example. The -XYNR1R2 is believed to be important. The couplers are included in a red- sensitive AgX emulsion layer, in amount of 2x10<-3> to 5x10<-1> mol per mol Ag; the coupler is dissolved in a high boiling solvent e.g. an ester, in which it is highly soluble, or if the coupler has an acid group it can be dissolved in alkaline aqueous solution, and the solution is dispersed in a hydrophilic colloid, e.g. gelatin. After color development with a primary aromatic amine, and bleach processing, a cyan dye image of high density and good fastness is formed.
Patent GB-2113283-A (GB)
Title: Weatherstrip
Inventor: SWANSON RICHARD D
IPC: E06B7/23
Filed: 1983-01-20
Abstract: An elongate weatherstrip (60) e.g. for sealing between a door and a jamb comprises an elongate body having a base (62) formed of relatively stiff plastics material and adapted to be mounted in an elongated keyway or groove (48). An outer, hollow tubular sealing element (64) of the weatherstrip is integrally secured with the base and is formed of relatively flexible plastics material. The sealing element (64) is adapted to be deformed by movement of the door, to form a tight seal between adjacent edge portions of the members. The weatherstrip (60) is suitable also for sliding or wiping type sealing action, e.g. between the top of a door and its frame or for sealing action by direct compression of its element (64) towards its base between the door frame and the door. <IMAGE>
Patent GB-2118566-A (GB)
Title: Anthocyanin colorant from grape pomace
Inventor: LANGSTON METTY SOEK KIOEN
IPC: C09B61/00
Filed: 1983-03-29
Abstract: Grape pomace is contacted with an aqueous extraction solvent containing HSO3 ions to extract anthocyanin-(HSO3) complex. The complex is recovered by treating the liquid extract phase with a non- ionic adsorbent to adsorb the complex. Anthocyanin colorant, free of the HSO3<->, ions is recovered by elution with an acidified organic solvent for anthocyanin. The anthocyanin colorant may be provided in dry form by drying the solvent solution.
Patent GB-2123873-A (GB)
Title: Reinforced concrete slabs, and concrete structures formed therefrom
Inventor: BUGAN ANTONIO
IPC: E04C2/06
Filed: 1983-05-11
Abstract: A concrete structure, and reinforced concrete slabs 1 for producing it, in which each slab has reinforcing bars 4 with projecting portions at those edges of the slabs which abut, the slabs being aligned and held in position by clamping together of the projecting portions. There are gaps between the slabs sufficient to allow thermal expansion of the slabs and/or bars, and to allow access to the clamping means 8, 10. The projecting portions of one slab may lie above those of the adjacent slab. <IMAGE>
Patent GB-2146378-A (GB)
Title: Safety device for a ladder
Inventor: JENKINS MICHAEL CHARLES
IPC: E06C7/42
Filed: 1983-09-12
Abstract: A safety device for inhibiting the lower end of a ladder (38) from slipping away when the ladder (38) is in use, comprises at least one leg (12) which has attachment means (10) at one end to enable it to be attached to a lower end region of a ladder (38). When the device is in use, the or each leg (12) extends from the attachment means (10) to a position on the ground which is spaced from the ladder, and has, with a lower part of the ladder (38), a triangular construction to inhibit rotation of the leg relative to the ladder (38) in a sense opposite to that in which the ladder (38) would rotate relative to the ground were its lower end to slip away. <IMAGE>
Patent GB-2146775-A (GB)
Title: Accelerometer system
Inventor: WATSON NORMAN FREDERICK
IPC: G01P15/18
Filed: 1983-09-16
Abstract: An accelerometer system suitable for measuring low- frequency accelerations in inertial systems is also able to measure high-frequency vibrational accelerations which give rise to e.g. sculling effects in inertial platform arrangements employing three such accelerometer systems. The system comprises a low-frequency inertial quality accelerometer 11 and a high-frequency, e.g. piezo-electric, accelerometer 15, the outputs being filtered by low- and high-pass filters (20, 22) respectively and additively combined (24), the level of combined output signal being maintained over the band of frequencies of interest. The filters may be arranged to give a flat response at a cross-over frequency chosen to be removed from the higher and lower frequencies mainly desired to be measured. Three such systems may be combined with their sensitive axes orthogonally arranged. <IMAGE>
Patent GB-2148807-A (GB)
Title: Front sub-frame structure for a road vehicle
Inventor: KING CHARLES SPENCER
IPC: B62D3/00
Filed: 1983-11-02
Abstract: The structure comprises a longitudinal beam 11 joined to the vehicle steering rack 12 which forms part of the sub-frame. Sub-frame to body compliant mountings include a front mounting 14 and two spaced mountings 21 on brackets 19 of the rack. An engine mounting 29 is substantially equi-distant from the body mountings and is suitable for supporting the whole of the weight of a three cylinder engine. There is limited compliance in the joint between beam 11 and rack 12. Brackets 19 on the rack also carry suspension mountings 22. <IMAGE>
Patent GB-2149595-A (GB)
Title: Vehicle electrical power supply
Inventor: BERRY GEOFFERY FREDERICK
IPC: B60R16/03
Filed: 1983-11-09
Abstract: The power supply comprises an alternator having a stator 10 with first and second mutually isolated single phase windings 14, 16. The first winding 14 supplies alternating current to the A.C. or resistive loads 24 of the vehicle. The second winding 16 is connected to a rectifier 26 and voltage regulator 32 circuit to provide a DC supply for the ignition loads 34, other DC loads 35 being supplied from the winding 16 via a rectifier 28 which also changes the battery 36. The system reduces rectifier losses and improves fuel economy. In an "ON" position of an ignition switch 22, 40 the battery 36 is connected to the ignition circuits 34 for engine start up; in an "ACCESSORY" position of the ignition switch the A.C. loads 24 are connected to the battery 36, and esential A.C. loads such as side lights, may also be energised from the battery 36 in the "OFF" position of the ignition switch. <IMAGE>
Patent GB-2131467-A (GB)
Title: Purlin extending across structurial members
Inventor: WALLIS MALCOLM ROBERT
IPC: E04C3/07
Filed: 1983-11-29
Abstract: A structure comprising at least two structural members (10) and a purlin (12) supported by and extending between the structural members (10) and connected thereto by cleats (13), one fixed to each of said two structural members (10), wherein the purlin (12) comprises a cold rolled section having a pair of spaced side-by-side generally parallel opposed flanges (15a, 15b), each having an inturned lip (16a, 16b) at one edge and the flanges (15a, 15b) being interconnected by a web part (17) at their other edges, the web part (17) comprising a median portion (18) perpendicular to the flanges (15a, 15b) and connected by inclined portions (19a, 19b) to edge portions (20a, 20b) of the web (17) which are connected to the flanges (15a, 15b) to extend perpendicular thereto, and the purlin (12) is connected to the cleats (13) by fasteners (21) engaged with the edge web portions (20a, 20b) of the purlin (12).
Patent GB-2150775-A (GB)
Title: Frequency synthesiser
Inventor: JACKSON THOMAS
IPC: H03L7/197
Filed: 1983-12-02
Abstract: A frequency synthesiser of the phase-locked loop, fractional-n type, with means 8,9 for modifying the division ratio 'n' of variable divider 7 to a non-integer average value, includes a phase modulator 10 via which either the reference signal f@ or the feedback signal Q@ is fed to the phase detector 4, and a wave-form generator 11 responsive to the division ratio modifying means for producing a modulation signal which is received by the modulator, to modulate the signal applied thereform to the phase detector, thereby substantially to cancel phase jitter. Converter 11 generates a staircase wave-form. The modulator 10 is in the form of a D-type flip-flop set by f@ and reset when a ramp reaches equality with the staircase waveform, so that the output pulses have trailing edges which are jittered in accordance with the staircase waveform. <IMAGE>