baber/WOPTO huggingface dataset:
Patent GB-2001820-A (GB)
Title: Adjustable frequency-dependent attenuation corrector circuits
IPC: H04B3/14
Filed: 1978-07-31
Abstract: An adjustable frequency- dependent attenuation corrector circuit designed as an unblanced electrical four-terminal network comprising at least one inductor 2 in a series arm, at least one differential capacitor 3, and possibly a series coil and a resistor. The differential capacitor lies in an input or output shunt arm, and its rotor is connected to a tapping of the inductor. The fundamental attenuation is set by a resistor R, which is either connected in a shunt arm to a common or further tapping of the inductor or is connected in parallel with the inductor. The circuit can be employed as a continuously adjustable attenuation corrector in carrier frequency systems. <IMAGE>
Patent GB-2005179-A (GB)
Title: A device for cutting sheet material
IPC: A47G27/04
Filed: 1978-08-10
Abstract: A device for use in cutting wallpaper or floor-covering to a desired line such as a corner of a room consisting of a rectangular plate 2 having a curve near to one of its long edges A and a cutting edge B along its other long edge and a projecting member having at least one long edge C parallel to the long edges of the plate wherein the distance between the said long edges of the plate is equal to or bears any other desired predetermined relationship to the distance between the said curved edge and the long edge of the member. <IMAGE>
Patent GB-2028894-A (GB)
Title: Fire-limiting Inflatable Seals
IPC: E21F17/107
Filed: 1978-08-30
Abstract: This invention relates to an inflatable seal 1 for use in sealing off roadways in a coal mine affected by a fire in a seam. Previously used seals comprised cylindrical inflatable bags which when inflated creased and folded, leaving air passages around the seal. Also they did not fit well into the corners of the roadways, and were therefore not effective. The present invention overcomes these disadvantages by providing in the seal 1 preformed creases 5 whereby any creasing or folding took place in a controlled manner so that the seal worked effectively. The seals are envisaged as being useful in mining operations and as fire barriers in office and hotel ventilation systems. <IMAGE>
Patent GB-2004906-A (GB)
Title: Alumina-coated silicon carbide particles
IPC: C09C1/68
Filed: 1978-09-08
Abstract: An abrasive material particularly useful as a dispersoid in metal matrices to provide articles of use having superior abrasive material comprising silicon carbide particulate, the individual particles of which have a predominantly alumina coating thereon to inhibit dissolution of the particles in the metal matrix at high temperatures. The invention finds special application in abrasive blade tips of nickel base or cobalt base superalloys having the alumina coated silicon carbide particles dispersed therein for service in gas turbine engines.
Patent GB-2012697-A (GB)
Title: Overhead rail installation
IPC: B61B10/02
Filed: 1979-01-19
Abstract: An overhead rail installation comprises a track 1 for vehicles 2 each individually propelled by a drive wheel powered by a motor. In selected sections of the installations (for example, on inclines or where speeds faster or slower than can be provided by the motor are required) the vehicles are propelled by a drive chain 7 supported from an endless track 6. Each vehicle has an upstanding pin 5 for contact with entrainment pawls 8 pivoted to carriers 9 depending from the chain. <IMAGE>
Patent GB-2014215-A (GB)
Title: Slip Assembly for Supporting Well Pipe
IPC: E21B19/06
Filed: 1979-02-02
Abstract: A slip assembly (10) (Fig. 3) for supporting well pipe in a rotary table includes a slip bowl structure (17) to be received and supported within the rotary table (14) in a relation to turn therewith, a carrier structure (18) supporting a plurality of slips (19) and mounted for upward and downward movement relative to the slip bowl structure and with the slips, latch means (22) for releasably retaining the carrier structure and slips in a lower active pipe gripping position, and yielding means (21) urging the carrier structure and slips upwardly to retracted positions when the latch means are released. <IMAGE>
Patent GB-2041950-A (GB)
Title: Brick Composition and Method of Making Bricks
IPC: C04B33/13
Filed: 1979-07-18
Abstract: The plasticity and green strength of unfired brick and the proportion of usable brick obtained after firing, are improved by the addition to raw brick material consisting of 50 to 100% by weight of shale and 50 to 0% by weight of clay, of a sodium bentonite additive consisting of 99.9% to 90% by weight of sodium bentonite and 0.1 to 5% by weight of a water- soluble anionic polyelectrolyte polymer and, optionally, 0.1 to 5% by weight of a water-soluble dispersant.
Patent GB-2019889-A (GB)
Title: Electrically Augmented Vacuum Filtration
IPC: B01D61/20
Filed: 1979-03-23
Abstract: A system for dewatering a suspension of solids in an electric field controllably maintained between opposing electrode structures A, C, to id cause the solids to migrate relative to the carrier liquid to form a layer or cake O on the set of electrode structures A in which the electrode members are positioned within ion- permeable walls and immersed in a selected electrolyte, while allowing carrier liquid to be withdrawn under vacuum in the opposite direction through the liquid-pervious wall of hollow, counter electrode structures C, and wherein said layer or cake material can be detached from said electrode structures A during exposure from the suspension, e.g. by doctor blades 17, 18. <IMAGE>
Patent GB-2036480-A (GB)
Title: Reversible analogue to digital converter with high precision
IPC: H03M1/00
Filed: 1978-07-19
Abstract: A reversible analog to digital converter is designed for high precision in the interrelation of analog voltages and binary digital representations. An upper and a lower limit voltage converge on the analog voltage level in decreasing steps that are binary related. The upper and lower limits are averaged to form a trial voltage (V<uT>u); in A/D conversion the trial voltage (V<uT>u) replaces one of the limits in accordance with a comparison between the analog voltage (353) and the trial voltage (V<uT>u), in digital to analog conversion the trial voltage replaces one of the limits in accordance with a binary input signal (340).
Patent GB-2018435-A (GB)
Title: Dissolved oxygen detector
IPC: G01N27/49
Filed: 1979-04-30
Abstract: A dissolved oxygen detecting device comprises a stainless steel tubular body member (1) containing an electrolytic cell (2) which is installed horizontally in a vat wall and has its end within the vat closed by oxygen permeable membrane 4 abutting the platinum cathode disc (3) of the cell. The outer end of the body member has a communicating hollow leg (8) extending vertically upwardly and houses a flexible tube (7) attached to the cell and enclosing leads from the cell electrodes to an output socket at the top end of the leg. An outlet pipe (11) near the top end of the leg has a nipple (12) to receive piping leading to the vat exhaust system. The anode is an aluminium spiral (6) & the electrolyte fills the horizontal tube (1) & extends into the vertical tube (7). <IMAGE>
Patent GB-2020289-A (GB)
Title: Phosphorus containing betaine derivatives
IPC: C09K23/14
Filed: 1979-05-04
Abstract: The compounds have the formula:-   <IMAGE>  or   <IMAGE> in which A is O<(-)>, OM, or -O-Y-R<(+)>; B is O<-> or OM'; X<(-)> is an anion; z is 0-2 and only one of A and B is O<(-)>; R is a group of formula  [R'CON(R<2>)-(CH2)n-N(R<3>)(R<4>)-]<(+)>-  or   <IMAGE> in which R<1> is C5-22 alkyl, alkenyl, alkoxy or hydroxyalkyl or up to C20 aryl or aralkyl; R<2> is H, alkyl, hydroxyalkyl, alkenyl, cycloalkyl or polyoxyalkylene; R<3> and R<4> are alkyl, hydroxyalkyl, carboxyalkyl, polyoxylalkylene or R<3> and R<4> form a heterocycle with the N atom; n is 2-12; Z is N, S or O; o is 0-3; p is 1-3 and o + p is 3-4; R<6> is C2-6 alkyl or hydroxyalkyl; Y is alkylene optionally substituted by alkoxy, or hydroxy or interrupted by up to 3 O atoms; M and M' are H, alkyl, hydroxyalkyl, cycloalkyl, aralkyl, aryl or a salt radical provided when either is an organic radical the other is H or a salt radical. The compounds are used as surfactants.
Patent GB-2048034-A (GB)
Title: Apparatus for Planting Seeds
IPC: A01C9/00
Filed: 1979-05-11
Abstract: The apparatus comprises a device 20 for forming a furrow, a supporting member 13 for the device 20 pivotally connected to a frame 10, ground engaging means such as a share 18 on the supporting member for controlling the pivotal position of the supporting member relative to the frame, and a conveyor 21 for feeding seeds from a seed supply to the furrow. The use of a share 18 is particularly advantageous as it finds its own level in the soil and, therefore, rises and falls with the contour of the ground. Such movement controls the level of the furrow forming device to give a substantially constant planting depth. <IMAGE>
Patent GB-2024611-A (GB)
Title: A device for cleaning floors or decks
IPC: A47L11/03
Filed: 1979-07-06
Abstract: A device for cleaning floors or decks comprises a hood (1), wheels (2) within the hood for supporting it with its rim (3) clear of the floor or deck, a tubular spindle extending within the hood from a rotary fluid coupling (5) secured to the top (6) of the hood, a plurality of tubular arms (7) radiating from and communicating with the tubular spindle, a nozzle (8) at the end of each arm (7) inclined to the axis thereof away from the top (6) of the hood (1), a handle (9) preferably of the bail type with its ends on horizontal pivots (10) on brackets (11) on the hood (1), and a hose connection (12) on the rotary fluid coupling (5) for a pressure water supply, preferably forming part of a stop cock (13). <IMAGE>
Patent GB-2026241-A (GB)
Title: Radio anti-interference capacitor
IPC: H01G4/32
Filed: 1979-07-12
Abstract: A wound ratio anti-interference capacitor comprising a first dielectric foil (1), two conductive coatings (2,3) on one surface of the first dielectric foil, and a metal foil (5) arranged between the other surface of the first dielectric and a second dielectric foil (6), the metal foil forming the outer turn of the capacitor roll and having an external connection (11). Thus several capacitances are combined in one roll to act as X- or Y- capacitors with self healing capability and occupying a small volume. <IMAGE>
Patent GB-2029505-A (GB)
Title: A cleaning appliance pump assembly
IPC: B60S3/00
Filed: 1979-07-26
Abstract: A cleaning appliance pump assembly (1) comprises a housing (22) of substantially liquid tight construction and containing a pump (10) for pumping a cleaning liquid, an electric motor (9), a shaft (11) drivably connecting a rotor (19) of the motor (9) and the pump (10), an electrically non-conductive cooling liquid, e.g. oil, covering the motor (9) and the pump (10), impeller means to circulate the cooling liquid within the housing 22 and heat exchange means to facilitate heat exchange between the cooling liquid and the cleaning liquid. <IMAGE>
Patent GB-2037784-A (GB)
Title: Adhesives: activators
IPC: C09J5/04
Filed: 1979-09-24
Abstract: Two part room temperature anaerobic curable adhesives based on (meth)acrylate monomers, comprise a peroxy compound and an activator derived from certain sodium salts of sulphuric acid esters of indigo or thioindigo dyestuffs. These activators are non-toxic and lead to reduced discolouration of the adhesive bond. The dyestuff is converted to the active form i.e. carbonyl group containing form by reaction with the peroxy compound. A typical active form of a leuco vat dyestuff and its reaction with hydroperoxide, is shown thus:   <IMAGE>
Patent GB-2033597-A (GB)
Title: Photographic material having an antihalation layer imbibible in an alkaline bath and removable in a water washing bath
IPC: G03C1/835
Filed: 1979-09-26
Abstract: A photographic material comprising a supporting base coated on one side with at least one silver halide emulsion layer and on the other side with an antihalation layer which is subjected to imbibition in an imbibing bath and removable in a water washing bath to which the photographic material is subjected during processing. The antihalation layer comprises an antihalation agent e.g. carbon black and a mixture of two copolymers of a lower alkylmethacrylate and acrylic or methacrylic acid, the first copolymer containing more acrylic or methacrylic acid than the second co-polymer.
Patent GB-2037771-A (GB)
Title: ???-substituted benzyl phosphonic acid ester derivatives
IPC: A01N57/24
Filed: 1979-11-06
Abstract: The invention relates to the use, as herbicides, of  alpha -substituted or ???,???- disubstituted benzyl phosphonic acid esters, thiol esters and ester amides and compositions containing such compounds. The phenyl of the benzyl radical may optionally be mono-, di- or tri-substituted. The invention further provides novel compounds of the above-mentioned structure and processes for making such compounds.
Patent GB-2063132-A (GB)
Title: Cold extrusion process
IPC: B21C31/00
Filed: 1979-11-12
Abstract: In a cold extrusion process the extruded portion of a metal billet (20) is initially confined in an annular space (40) defined between the wall (42) of a die cavity (14) and a co-axially disposed anvil (28). A force (B) is applied to the outboard end (22) of the extruding product via a pressure pad (24) and is in opposition to but less than the extrusion force (C) applied by a ram (18). <IMAGE>
Patent GB-2047628-A (GB)
Title: Pulsed liquid droplet ejector apparatus
IPC: B41J2/14
Filed: 1980-04-24
Abstract: A pulsed liquid droplet ejector apparatus wherein a rectangular piezoelectric transducer is arranged abaxially to an ink containing channel (15). The edge (4) of the transducer opposite the channel is held fixed so that on excitation of the transducer by an electrical pulse, the transducer extends towards the channel (15) compressing it and ejecting a droplet therefrom. <IMAGE>
Patent GB-2049198-A (GB)
Title: Probe for use in measuring apparatus
IPC: G01B3/00
Filed: 1980-04-25
Abstract: A stylus (17) is mounted to one part (22) of a stylus holder the other part (21) of which is mounted to a base (10) for resilient displacement against a spring (16). Three radial arms (14) on the holder part (21) seat in respective pairs of balls (15) to define a return position for the holder after displacement. Three stress transducers (20), e.g. piezoelectric devices, are sandwiched between the two-holder parts (21,22) which are secured together by a screw (23). The transducers detect omnidirectionally contact of the stylus with a workpiece, and the resilient mounting of the holder to the base allows over-run of the workpiece measuring machine without involving the transducer elements. The transducer elements could alternatively be incorporated in a two- part base (10), e.g. in the plane X-X. <IMAGE>
Patent GB-2064319-A (GB)
Title: Hair drying equipment
IPC: A45D20/16
Filed: 1980-12-01
Abstract: Hair drying equipment comprises a conventional hand-held hair dryer (1) with its electrical leads anchored to a plate (5) which can be secured to a table top. The plate has walls (18) which position a moulded cover (2) on the plate, and the cover cover has an indentation for receiving and supporting the hair dryer when the latter is not being used. <IMAGE>
Patent GB-2071943-A (GB)
Title: Delay lock loop
IPC: H04L7/033
Filed: 1981-02-03
Abstract: A delay lock loop comprises: a first input (12) receiving a first input pulse train; a pulse edge detector (22) for receiving at a first input the first input pulse train and for producing an output signal related to the time interval between an edge transition of a pulse on the first input and a second input of said edge detector; a second input (14) receiving a second input pulse train; a variable delay (26) connected to the second input for providing a variable delay output pulse train with respect to the second input pulse train; and a feedback (44, 55) for producing a feedback signal from the output signal of the edge detector to provide an input to the variable delay to control the output thereof; a delayed output of the variable delay being connected to the second input of the edge detector. The delay lock loop may be applied, for example, to a self-adjusting phase equaliser, a self-adjusting delay device, a single or dual input frequency dependent demodulator, or a modulator/demodulator. <IMAGE>
Patent GB-2075008-A (GB)
Title: Preparation of 3,5- dimethylphenol from Acetone
IPC: C07C39/07
Filed: 1981-03-04
Abstract: 3,5-dimethylphenol is prepared by heating acetone at a temperature of 370 to 510 DEG C and at a pressure of 1 to 10 bars in a cyclic process over a catalyst comprising 25 to 80% by weight magnesium oxide, 20 to 60% by weight silicon dioxide or a silicate, and up to 10% by weight of chromium (iii) oxide, and the reaction products boiling above 180 DEG C are separated and removed from the production cycle.
Patent GB-2094853-A (GB)
Title: Releasable rotary drive coupling
IPC: E21B7/20
Filed: 1981-03-13
Abstract: A releasable coupling for rotary drive with advance or reverse thrust, suitable for incorporation in a downhole drilling device to enable the latter to operate simultaneously as a casing advancer, with a drive engageable and disengageable blind and in accretable debris and dirt for removal of a drilling head leaving the casing in situ, comprises, preferably, a "bayonet"-like connection with sprung drive projections 8 and, for these, a locating shoulder and longitudinal and peripheral cam surfaces. The driving member 7 drives the drilling head and, through the coupling 5, 8, a front section of the casing with leading and trailing reaming teeth 22, 10, with a free rotary connection to the next casing section 3, 2. Reverse rotation releases the coupling. <IMAGE>
Patent GB-2072840-A (GB)
Title: Process and Device for the Contact-free Measurement of a Dimension
IPC: G01B11/06
Filed: 1981-03-23
Abstract: In a process and apparatus for measuring the dimension of at least one object (8) without physical contact therewith, a fine light beam, for example a laser beam (2), is deflected across the object in the direction of the dimension to be measured and the instants in time at which the light beam impinges upon and moves off said object are determined and stored as measurement data. These data are then evaluated, together with reference data relating to the speed of deflection of the light beam, to provide a measure of the dimension. In one example a computerised system operates in a continuous cycle wherein the measurement data are recorded and stored in a first memory during a first cycle, the data is transferred to a second memory in the direct memory access mode, and then during the next cycle the data in the second memory is processed whilst new data is being read into the first memory. A chopper circuit linked to the means for deflection of the light beam, for example a rotary mirror (3), serves both to control the operating cycle and to provide the reference data. <IMAGE>
Patent GB-2100097-A (GB)
Title: Improvements relating to video display systems
IPC: G09G5/26
Filed: 1981-06-03
Abstract: In a video display system, RAM (6) stores brightness and/or colour of pixels defining some pattern on a square field, i.e. (7) on (6). To display the pattern on a CRT screen (1), e.g. with aspect ratio 3:4, RAM (6) is addressed in rows and columns by programs (10R, 10C) in RAM's (8, 9) in synchronism with the CRT raster scan, rows and/or columns being omitted or repeated according to the scale required. Non-linear distortion can be provided by variation along the programs. Multiple images can be produced by further programs (11R, 11C) in RAM's (8, 9) not encountered until later in the horizontal or vertical raster scan. <IMAGE>
Patent GB-2087871-A (GB)
Title: Manufacture of semisynthetic penicillins
IPC: C07D499/68
Filed: 1981-07-01
Abstract: Semisynthetic penicillins of the formula:   <IMAGE> are prepared by reacting 6-aminopenicillinic acid or a water-soluble salt thereof with a mixed anhydride prepared by reacting an amino acid salt of the formula:   <IMAGE> with an N-chlorocarbonyl amide of the formula:   <IMAGE> wherein R represents H or OH, M represents K or Na, R1 is a methoxycarbonyl, ethoxycarbonyl, C1-C5-alkylcarbonyl, arylcarbonyl or amide group and X is a bis[mono-C1-C6-alkyl] group, a bis (monoaryl) group, a mono- C1-C5-alkyl, monoaryl or C1 -C6-alkyl diradical or a C1-C5-alkyl diradical comprising a heteroatom selected from N, O and S or a group of the formula   <IMAGE> wherein Y represents a C1-C5 group or a C1-C4 group comprising a hetero atom selected from N, O and S and n is an integer from 0 to 3.
Patent GB-2080021-A (GB)
Title: Time-of-flight Mass Spectrometer
IPC: G01N27/62
Filed: 1981-07-06
Abstract: In a time-of-flight mass spectrometer ions of different masses and energies are emitted by a source 12. The flight path of the ions to a collector 20 is folded by arranging for multiple reflections of the ions by a plurality of ion mirrors R1, R2...RN. The mirrors are such that the ion flight time is independent of the ion energy. Preferably ions of different energies are allowed to bunch. <IMAGE>
Patent GB-2106996-A (GB)
Title: Cooled rotor aerofoil blade for a gas turbine engine
Inventor: BULLER MICHAEL JOHN
IPC: F01D5/18
Filed: 1981-09-30
Abstract: A hollow cooled rotor aerofoil blade (10) for a gas turbine engine is provided with an apertured plate (17) which divides the interior of the blade into two portions (15, 16). A major portion of the apertured plate (17) is free and inclined with respect to the blade (10) so that upon rotation of the blade (10) in a gas turbine engine, the apertured plate (17) is centrifugally urged into sealing engagement with inwardly extending ribs (21) provided on the interior surface of the blade (10). One of the portions (16) of the blade interior is supplied with cooling air which then passes through the apertures (22) in the apertured plate (17) into the other portion (15) to provide impingement cooling of the region of the blade (10) around its leading edge (23). The construction also produced a damping effect as well as allowing for temperature differentials. <IMAGE>
Patent GB-2089147-A (GB)
Title: Insulation displacement connector and housing
IPC: H01R4/24
Filed: 1981-12-03
Abstract: A discrete wire insulation displacement connector includes a terminal (16) including an insulation displacement contact comprising a pair of blades defined by a line of cut. The edges of the contact ride in a guide channel (22) in the connector housing (14). The housing (14) includes a pair of opposed sidewalls (18) joined by a pair of opposed spaced webs (40) and a pair of opposed spaced endwalls 32 having upper edges below the upper edges of the webs. A tapered access to the connector is defined by at least one flexible prong (24) integrally joined to each of the sidewalls (18) and extending inwardly in opposed relationship. The trailing edges (26) of the prongs cooperate with the upper edges (42) of the webs to create an improved strain relief. <IMAGE>
Patent GB-2096661-A (GB)
Title: A process for preparing waste paper
IPC: D21C5/02
Filed: 1982-02-26
Abstract: In order to save energy and to economise on plant components, in the process for preparing relatively clean, pre-sorted waste paper the following preparation steps are carried out:   a) Pulping in the breaker (1) to a stock consistency of more than 15%, b) Delivery from the breaker (1) with the pulp stock at the consistency level established therein, c) Sorting of the pulpy paper stock by conducting it past a metal-seeking device (5), d) Introduction into a dispersion appliance (4) with an operating range which lies within the pulp stock consistency established in the breaker (1),   e) Dispersion of the pulp stock in the dispersion appliance (4),   f) Ensuing thinning of the pulp stock, g) Further preparation of the pulp by fine sorting and fine cleansing for the purpose of supplying it to the paper or cardboard machine.   <IMAGE>