baber/WOPTO huggingface dataset:
Patent GB-2009999-A (GB)
Title: Musical notation
IPC: G10D7/12
Filed: 1978-12-08
Abstract: Musical instrument has a keyboard with front 16 and rear 17 rows of keys corresponding to whole-tone scales a semitone apart. The rear keys are symmetrically staggered between the front keys. The first and third front row keys in each octave G, A, B, S, T, F, are distinguished from the remainder by their colour. Free reed instruments, such as a mouth organ, having a series of reeds producing whole-tone scales a semitone apart when blown and sucked respectively or when blown or sucked with a slide operated end not operated respectively are referred to together with xylophone type instruments with tone producing elements arranged in the same way as the keyboard above. Musical notation for use with these instruments comprises a stave 13 with pairs of lines, the space between adjacent pairs being double the space between the lines of a pair. The notation includes note-heads 11, 12 positioned as shown in relation to the stave lines, the note heads corresponding to the two key rows being of different colours. <IMAGE>
Patent GB-2025860-A (GB)
Title: Luggage Trolley
IPC: B62B3/14
Filed: 1979-03-20
Abstract: A luggage trolley comprises a luggage support (2) tapered towards the front and carried by two rear wheels and a castored wheel (1) at the front, the castored wheel (1) being mounted on a bearing element projecting above the height of the support (2) such that the centre of gravity of the trolley lies below the mounting of the castored wheel (1). An opening between two bars (5) of the support (2) allows entry of the castored wheel of another similar trolley when resting takes place. <IMAGE>
Patent GB-2017617-A (GB)
Title: In-Flight Re-Arming
IPC: B64D7/00
Filed: 1979-03-27
Abstract: A method of in-flight re-arming by towing a non-piloted lifting body flight vehicle 2 carrying a weapon payload 4 to a rendezvous with a receiver aircraft 1, engaging the flight vehicle 2 with an extendable arm 10 carried by the receiver aircraft 1 whilst the flight vehicle 2 remains outside the region of aerodynamic influence of the receiver aircraft 1, releasing the flight vehicle 2 from tow, drawing the flight vehicle up to the belly of the receiver aircraft and anchoring it in a re-armed position. <IMAGE>
Patent GB-2020842-A (GB)
Title: Magnetic mirror for imparting nonreciprocal phase shift
IPC: G02F1/09
Filed: 1979-04-27
Abstract: A magnetic mirror, for imparting a non-reciprocal phase shift to p- polarized light incident thereon, e.g. in a ring laser, has a magneto-optic garnet layer 36 formed on a first surface 33 of a transparent substrate 25 having a second opposed substantially parallel surface 28 with anti-reflection layer 30 upon which the light is incident. The light, upon passing through the magneto-optic garnet layer 36, is non-reciprocally phase shifted as a consequence of the application of a magnetic field to the garnet layer normal to the plane of incidence (poles 56, 58). Multi-layer reflecting means 40 are arranged adjacent a surface of the garnet layer 36 for reflecting light passing therethrough back through the layer 36 and comprise a dielectric reflector 42-48, layer 48 having a low refractive index of a thickness adjusted to cancel the effect of the complex component of the reflection by a final gold layer 50. Monocrystalline bismuth lutetium iron garnet grown epitaxially on gadolinium gallium garnet is particularly advantageous for use as the magneto-optic layer 36. <IMAGE>
Patent GB-2022931-A (GB)
Title: A brushless excitation device for electric synchronous generators
IPC: H02K19/30
Filed: 1979-05-04
Abstract: The invention relates to a self- adjusted or boosted brushless excitation arrangement 10, 12 for an electric synchronous generator having a stator 11 and a rotary winding 13 supplied via rectifiers 14 from an exciter winding 12. The exciter stator 10 comprises windings a1, a2, a3 series connected to corresponding windings P1, P2, P3 of each phase of the generator armature 11, and also comprises a no-load excitation or operating winding ev supplied by the voltage of one phase- winding P1 of said generator. The no- load excitation or operating winding ev is such as to generate a fixed alternating field having a number of polar pairs which is the same as that of the rotary field generated by the windings a1, a2, a3 of the exciter stator. <IMAGE>
Patent GB-2048807-A (GB)
Title: Connection unit for tractor towing trolleys
IPC: B62B5/00
Filed: 1979-05-15
Abstract: A connection unit for connecting a tractor to a nested string of trolleys or to a single trolley includes a first assembly 10 carrying releasable jaws 24 by which the unit can be secured to the trolley. A second assembly 12 is connected to the first assembly for pivotal movement relative thereto about a vertical axis 14. The latter assembly has a coupling for attachment to a tractor. A spring 40 or like resilient means exerts a mutual centring force on the two assemblies. <IMAGE>
Patent GB-2027192-A (GB)
Title: Photoelectric tachometer
IPC: G01P3/486
Filed: 1979-06-01
Abstract: A photoelectric tachometer for monitoring the speed of a rotating machine component enclosed by a housing and on whose surface (7) are provided light-dark markings, comprises a light-emitting diode (2) for illuminating the markings, a light- sensitive detector (4) for receiving reflected light (5) which fluctuates dependent on the rotational speed, the diode (2) being connected in series with the emitter-collector path (8, 10) of a NPN-Darlington transistor (6), the negative electrode of the light- sensitive component (4) being connected to the base (11) of the Darlington transistor (6) and to a high resistance fixed resistor (9), the series connection comprised of light- sensitive component (4) and fixed resistor (9) and the series connection comprised of the Darlington transistor (6) and light-emitting diode (2) being connected in parallel, and both series connections being connected, via a common external working resistor (13) to an operating voltage source (+UB). Connection to processing circuit 15 is either capacitative 14, or by opto-coupler, Fig. 2. Feedback to the source compensates for changes in spacing of the photoelectric apparatus from the member 7, contrast due to ageing, contamination of the member or extraneous light. Supply and output are by the same terminals A, B. <IMAGE>
Patent GB-2029764-A (GB)
Title: Plastics Laminate
IPC: A61F5/441
Filed: 1979-07-12
Abstract: A synthetic plastics laminate comprises, three layers, the first layer 10 being a layer of plastics material which is permeable to gases and impermeable to liquids, the second layer 12 being a layer of activated carbon cloth or activated carbon particles, or such particles carried by or impregnated in a paper or compressed wood fibre layer or carried on or in a non-woven layer of fibrous material, and the third layer 14 being a layer of material which is the same as or different from the first layer and if the latter is permeable to gases and impermeable to liquids. <IMAGE>
Patent GB-2025883-A (GB)
Title: Mechanically removing gambrels from carcasses by conveying means causing relative movement between gambrel and carcass
IPC: A22B7/00
Filed: 1979-07-17
Abstract: In a method of mechanically removing gambrels 1 from carcasses 2, carcasses are conveyed in succession to a removal station R, the carcasses being suspended from the hooks of gambrels, and each carcass when at the removing station is moved in the axial direction of the prongs of the hooks of the associated gambrel, while movement of the gambrel is restrained, so that the carcass slides off the hooks. There is also disclosed apparatus 10 for removal of gambrels from carcasses essentially by this method, the apparatus including various systems 12, 13 for manoeuvring each carcass and gambrel into a particular position facilitating removal of the gambrel. <IMAGE>
Patent GB-2026903-A (GB)
Title: Method of producing a polymeric sheet materials resembling leathers of natural origin in appearance
IPC: D06N3/00
Filed: 1979-07-30
Abstract: A nonporous coloured layer is formed on the surface of a leather-like sheet material having a porous polymeric coating by applying a colouring composition mainly comprising a colorant, a polymeric material and a solvent to the said surface followed by drying. A solution of a dyestuff in a liquid capable of causing swelling of the nonporous layer is then applied to the surface by spraying. The leather-like sheet material obtained in this way has a very close resemblance to leathers of natural origin.
Patent GB-2037547-A (GB)
Title: Means for Protecting Solar Water Heating Equipment Against Frost Damage
IPC: H05B1/02
Filed: 1979-09-27
Abstract: Apparatus for protecting solar water-heating equipment against frost damage comprises a copper tube (14) within which an electrical heating element extends and a thermal switch connected to the heating element and disposed in a junction box (11) to switch on the heating element when the ambient temperature falls below, say, 2 DEG C and switches the element off again when the ambient temperature rises above, say, 5 DEG C. The tube may be coiled or bent to suit the shape of the item to be heated. The tube 14 may be clamped to or wound around the item, a heat conducting filler being interposed between the tube 14 and the item. Alternatively the tube can be inverted into the item. <IMAGE>
Patent GB-2038489-A (GB)
Title: Arrangement for testing electric circuits on printed wiring boards
IPC: G01R1/067
Filed: 1979-11-09
Abstract: A number of test probes 9 are each carried and positioned by a respective linear motor 4 are arranged to make contact with conductors 8 of a circuit board under test by means of actuators 11. The linear motor probe carriers are positioned with respect to a wiring board by means of a horizontal table 3 which forms the static part of the linear motor, the wiring board being supported in a horizontal plane either above or below the table. The use of a small number of probes 9 avoids the problems of strain on the circuit board and stray impedance introduced by unwanted contacts in the usual 'bed-of-nails' test arrangement. <IMAGE>
Patent GB-2063364-A (GB)
Title: Fan control system for cooling apparatus such as cooling towers
IPC: F28C1/02
Filed: 1979-11-12
Abstract: The running speed of the fan 24 is continuously and proportionally changed responsive to the temperature of the cooling water either alone or in conjunction with the external atmospheric conditions, e.g. atmospheric temperature and relative humidity, to control the cooling capacity of the cooling apparatus. The control system consists of a main fan motor 29, an electronic adjustment circuit responsive to the cooling water temperature and external conditions and a power transmission means consisting of a variable pitch diameter belt speed changing means 62, 63, 64 and, preferably, a constant pitch belt reduction device 91, 92, 93, whereby the speed changing ratio of the belt speed changing means is continuously and proportionally varied depending upon the control signals from the adjustment circuit. The ratio variation is effected by displacing one cheek 62b of pulley 62 by means of a screw 70 which engages a nut 72 and is rotated in one direction or the other by means of a reversible electric motor which is controlled by the control signals. The adjustment circuit may have a soft-start control circuit which ensures that the speed changing means 62, 63, 64 is at its greatest reduction ratio when the motor 29 is started. <IMAGE>
Patent GB-2049875-A (GB)
Title: Improvement in or relating to leaf springs
IPC: F16F1/26
Filed: 1980-03-20
Abstract: A leaf spring, especially a parabolic spring, comprises several spring leaves (10 to 13), which are held together and braced in an axle support region by clamping means and which are centred relative to one another by cooperating recesses and protrusions in the region of the clamping means. The clamping length (16) of the leaves (10 to 13) is smaller than the clamping means length (24) in the length direction of the spring. <IMAGE>
Patent GB-2072522-A (GB)
Title: Thickener
IPC: B01D21/00
Filed: 1980-03-25
Abstract: A thickener vessel (1) has a set of inclined settlement plates (12). A slurry treated with flocculant is fed into the vessel through an inlet (15) and settling solids are collected on a rotating drum conveyor (5), preferably provided with flights (6), and carried beyond the surface of the liquor in the vessel. The solids are then dropped on to a belt conveyor (13) to be taken for further dewatering. The flights (6) may be porous, or the drum may itself be porous. <IMAGE>
Patent GB-2048775-A (GB)
Title: Foodstuff Packaging Materials
IPC: B65D75/26
Filed: 1980-04-30
Abstract: To withstand commercial sterilization conditions packages for foodstuffs, in the form of heat sealed pouches, bags or covered trays, are made from coextruded polymeric laminate. The laminate has an oxygen barrier layer of ethylene-vinyl alcohol copolymer between a moisture- permeable nylon layer and a heat sealable polyolefin layer; for bonding the ethylene-vinyl alcohol copolymer and the polyolefin layers together, a duplex interlayer is sandwiched therebetween, the interlayer comprising nylon in contact with the former and a modified polyolefin adhesive e.g. an acid anhydride graft polyolefin to the latter. The polyolefin layer can be heat sealed to itself at temperatures well in excess of commercial sterilization temperatures.   <IMAGE>
Patent GB-2079877-A (GB)
Title: Multi-ratio gearbox
IPC: F16H3/097
Filed: 1980-07-05
Abstract: A multi-ratio gearbox for a vehicle comprises an input shaft (10), an output shaft (11) and two intermediate shafts (12, 13). The shafts, (10, 11, 12, 13) carry a plurality of gears (14, 15, 16, 17, 18, 19, 20, 21, 22, 23). Some of the gears (15, 16, 17, 18, 22) are free to rotate on the shafts whilst others are fixed (19, 20, 21, 23) and dog or friction clutches (33, 34, 38, 41) are associated with the rotatably mounted gears (15, 16, 17, 18, 22) so that they may be fixed rotatably with respect to their associated shafts. A gear (14) on the input shaft (10) meshes with gears (18, 22) on the intermediate shafts (12, 13) and gears (19, 20, 21) on the intermediate shafts (13 and 14) mesh with respective gears (15, 16, 17) on the output shaft (11) so that depending on whether the gears on the intermediate shaft are free to rotate or not a different gear ratio is provided. An additional ratio is provided by allowing for input and output shafts (10 and 11) which are coaxial to be directly connected and provision may be made for reverse ratios. In an alternative form (Figure 3, not shown), the input shaft is in the form of a sleeve and coaxially surrounds one of two intermediate shafts which both carry gears on the output shaft. In a further embodiment (Figure 5, not shown), the dog clutches have synchronizers. <IMAGE>
Patent GB-2081388-A (GB)
Title: Wave energy turbine
IPC: F03B17/00
Filed: 1980-08-04
Abstract: The turbine consists of a number of wheels having blades 3 freely pivotal on spokes 2 and shaped so that the turbine rotates in the same direction regardless of the direction of flow therethrough. Bracing ropes 15 may be provided. The turbine drives a generator within chamber 10 disposed above at least one air bellows 11 controlling the depth of flotation. <IMAGE>
Patent GB-2086193-A (GB)
Title: Digital Transmission System
IPC: H04L25/03
Filed: 1980-10-07
Abstract: In an adaptive equaliser it is desirable to sample the incoming data bits at the right time, and to do this a timing phase control circuit (2) is used. This is controlled from a clock (3), synchronised with the incoming bit streams, and from a coefficient generation circuit (6-7-8). The latter derives a coefficient from each received bit which is subtracted (9) from that bit's value and applied to the circuit (2) to adjust timing. To get rid of inter-symbol interference, similar coefficient generation controlled via a chain of one-circuit delays (10, 11) are used, the coefficients therefore being summated and subtracted from the incoming signals. <IMAGE>
Patent GB-2064329-A (GB)
Title: Multiple puncture apparatus
IPC: A61B17/20
Filed: 1980-10-30
Abstract: A surgical multiple puncture device for administering to a patient chemicals or biological material for therapeutic or diagnostic purposes. A barrier 9 of flexible plastics material is arranged between an operating plunger 6 and a needle plate 8. The barrier 9 is of frusto-conical dish shape with an outwardly directed flange 3 at its periphery. A semi-tubular portion 4, or a plurality of portions, is/are provided in the flange 3 to vent air between the interior of the barrier and the outside. The barrier may be located in complementary recesses in a pack of rigid or semi-rigid plastics material with needle plates arranged in the interiors of the barriers. <IMAGE>
Patent GB-2063530-A (GB)
Title: Electronic timepiece
IPC: G09F9/30
Filed: 1980-11-05
Abstract: In an electronic timepiece, which has a time display section constructed such that optical display elements are selectively driven for time display, the display mode of the time display section can be controlled to provide dynamic displays other than an ordinary time display mode, and in addition to an ordinary time display mode.
Patent GB-2065488-A (GB)
Title: Method and device for filling a plate filter press with slurry
IPC: B01D25/30
Filed: 1980-12-12
Abstract: A method for filling a plate filter press with slurry in which resistance to filling increases during the filling process employs a rotary filling pump whose speed is controlled automatically to increase the slurry pressure according to a predetermined curve and subsequently to hold the pressure constant. A single pump may fill a number of presses sequentially.
Patent GB-2069073-A (GB)
Title: Overload clutch for transmitting limited torque
IPC: F16D43/20
Filed: 1981-01-02
Abstract: A motor driven hand tool such as a hammer drill incorporates an overload clutch, for minimising the idling torque transmitted to its handle should the working tool jam, comprising two disc-shaped drive parts (2, 3) mounted on a shaft 1, the drive part (3) having a cage (5) retaining balls (4), at different radial spacings relative to the centre of the shaft (1), which register with respective detent openings (14) on the drive part (2). In the event of a predetermined torque being exceeded, the balls (4) move out of the detent openings (14) to move the drive parts (2, 3) apart against the action of compression spring (9) uncoupling the clutch and thereby allowing the drive parts (2, 3) to rotate freely relative to each other subject only to the rolling friction of the balls which are also at different angular spacings so that they reengage the detent openings only once per revolution. <IMAGE>
Patent GB-2069294-A (GB)
Title: Data rate reduction for data transmission or recording
IPC: H04N7/46
Filed: 1981-02-06
Abstract: A digital TV or other data system reduces the data rate by transmitting or recording only bytes (X) representing half of the data samples (pixels). Steering or control bits are also provided that tell which of the transmitted or recorded bytes are the closest match to the untransmitted or unrecorded bytes (7) so the pixels represented by the latter can be reconstructed. In particular, a sample (14) not to be transmitted or recorded is compared with the average of the vertically adjacent samples (16, 18), the average of the horizontally adjacent samples (20, 22), and the averages of the two pairs of diagonally adjacent samples (24, 26; 28, 30); and the control bits are generated according to the closest match. <IMAGE>
Patent GB-2074333-A (GB)
Title: A Broadband Reflective Laser Recording and Data Storage Medium with Absorptive Underlayer
IPC: G11B7/24
Filed: 1981-02-16
Abstract: A broadband laser recording and data storage medium for direct read after writing, formed from a photosensitive silver-halide emulsion in four steps. First, a non-saturating actinic radiation exposure is used to create latent images. A normal photographic development is used to produce a medium of gray neutral density. The surface of the remaining silver halide is fogged in a water or alcohol based solution to create a very thin layer of silver precipitating nuclei on the surface. Alternatively a thin layer of nucleating agent for silver precipitation can be incorporated. Finally, a single-step, negative silver diffusion transfer process is used to dissolve the unexposed and undeveloped silver halide, forming silver ion complexes using a monobath containing a silver-halide solvent and a silver reducing agent. These complexes are transported by diffusion transfer to the sites of the silver precipitating nuclei and the filamentary silver on the surface, where the silver complexes are reduced to metallic silver on both the nuclei and the filamentary silver to form a high concentration of non- filamentary silver particles at the surface of a low melting temperature colloid matrix which is highly reflective of light and electrically non- conducting.
Patent GB-2249822-A (GB)
Title: A method and apparatus for concentrating the energy of a monochromatic radiation beam onto a target
Inventor: DUCHET MICHEL
IPC: B23K26/04
Filed: 1981-03-12
Abstract: The method consists in detecting the radiation (16) emitted by the target in response to heating thereof by the beam (15) passing through an optical system in a frequency band which excludes the frequency of the beam; and in moving the components (4 and 5) of an optical system in relation to each other to increase the intensity of the radiation picked up. Application to destruction of a military target by a laser. <IMAGE>
Patent GB-2079269-A (GB)
Title: Tetralone intermediates
IPC: C07D211/22
Filed: 1978-11-07
Abstract: Compounds of the formula   <IMAGE>   <IMAGE>  wherein R1 is hydrogen, benzyl, benzoyl, alkanoyl of 1 to 5 carbon atoms or -CO-(CH2)p-NR'R'' wherein p is 0 or an integer from 1 to 4; each of R' and R'' when taken individually is hydrogen or alkyl of 1 to 4 carbon atoms; R' and R'' when taken together with the nitrogen to which they are attached form a 5- or 6-membered heterocyclic ring selected from piperidino, pyrollo, pyrrolidino, morpholino and N-alkylpiperazino having from 1 to 4 carbon atoms in the alkyl group; R2 is selected from hydrogen, alkanoyl of 1 to 6 carbon atoms and benzoyl; R3 is selected from hydrogen, methyl and ethyl; R4 is selected from hydrogen, alkyl of 1 to 6 carbon atoms and benzyl; Z is selected from: (a) alkylene having from one to nine carbon atoms; (b) -(alk1)m-X-(alk2)n- wherein each of (alk1) and (alk2) is alkylene having from 1 to 9 carbon atoms, with the proviso that the summation of carbon atoms in (alk1) plus (alk2) is not greater than 9; m and n are each 0 or 1; X is selected from O, S, SO, and SO2; and W is selected from hydrogen, methyl, pyridyl, piperidyl, phenyl, monochlorophenyl, monofluorophenyl and   <IMAGE>   wherein W1 is selected from hydrogen, phenyl, monochlorophenyl and monofluorophenyl; a is an integer from 1 to 5 and b is 0 or an integer from 1 to 4, with the proviso that the sum of a and b is not greater than 5. Compounds I and II are useful as analgesics. Compound III is useful as an intermediate for the preparation of Compounds I and II. Intermediates for the preparation of I, II and III are disclosed. A process for the use of compounds I and II to produce analgesia is also described.
Patent GB-2099790-A (GB)
Title: Liquid dispensing apparatus
IPC: G01F11/32
Filed: 1981-06-10
Abstract: A method of monitoring the dispensing of measured quantities of a liquid such as spiritous drink comprises detecting the flow of air bubbles through a tube (2) by which a measuring bowl (1) is filled from a vessel such as an inverted bottle. The detecting is achieved by photoelectric means for detecting the flow of air bubbles through the inlet tube of the apparatus and/for applying signals so derived to electronic counting apparatus such as a microprocessor. <IMAGE>