baber/WOPTO huggingface dataset:
Patent GB-2087583-A (GB)
Title: Bistable liquid crystal twist cell
IPC: G02F1/139
Filed: 1981-10-15
Abstract: A bistable liquid crystal twist cell has two states ("up" and "down") which are stable in the presence of a single holding voltage in the range Vdown to Vup. Raising the voltage temporarily above Vup causes the cell to enter the "up" state and lowering the voltage below Vdown causes it to enter the "down" state. In an example employing liquid crystal material E7 (BDH) doped with cholesteryl nonanoate a cell thickness of 13.95 microns and a 360 DEG  twist, Vdown was 1.5V and Vup 1.8V. A suitable holding voltage was 1.7V. For faster switching times, switching voltages considerably higher than Vup and lower than Ydown can be used, such as 3V and 0V for switching up and down times of 0.055s and 0.075s respectively in the example.
Patent GB-2094164-A (GB)
Title: Toy portable rotary saw
IPC: A63H33/30
Filed: 1981-12-22
Abstract: A portable toy circular saw comprises a body 1 to which is connected a semi-circular shell 8. A semicircle 11 with a surface 13 resembling a circular saw pivotally mounted and is urged by a spring out of the shell 8. A notch in the semicircle 11 allows the semicircle to retract pivotally into the shell against the spring action when simulating sawing. Retraction of the semicircle causes the end of a strip 7 to be urged against the teeth of a toothed wheel 6 on the output shaft of an inertia mechanism including a flywheel spun by an automatically retracting pull string 4. The strip and toothed wheel thus produce a sound similar to that of using a circular saw. <IMAGE>
Patent GB-2113720-A (GB)
Title: Fabricating solder tracks
Inventor: GEORGE WILBERT RIDD
IPC: B23K35/26
Filed: 1982-01-07
Abstract: A method of forming metal alloy tracks on a planar substrate, e.g. a copper clad laminate 1. The substrate surface is coated with solder particles 2 in a fluid carrier 3. The surface is then traversed with a focussed beam 4 of radiant energy of a wavelength such that there is a low absorption of energy in the fluid carrier and a high absorption of energy in the particles which are thereby fused to the copper cladding 5. The substrate is then washed to remove surplus particles and the exposed copper is etched using the fused solder tracks as a mask. <IMAGE>
Patent GB-2113045-A (GB)
Title: Circuit arrangement for transmitting digital information signals in a communication system
Inventor: ENDLER JOACHIM
IPC: H04Q11/04
Filed: 1982-10-28
Abstract: When information bits are transferred between spatially separated modules (M1, M2) in a digital private branch exchange, delays occur which may result in switching errors. To automatically compensate for such delays if the PCM bits are transferred serially, a compensating circuit (AGL) in the receiving module (M2) receives the transmit bit clock over a first clock line (ST), and this clock is used to transfer the bits from the transmission line (üL) into the compensating circuit. Over a second clock line (KT), the compensating circuit receives from the transmitting module (M1) the channel clock, which causes the bits to be transferred in a byte-parallel manner to a receiver buffer (EPS) clocked at the transfer clock rate of the receiving module (M2). <IMAGE>
Patent GB-2131674-A (GB)
Title: Ashtray
Inventor: CHEONG LAITONG
IPC: A24F19/00
Filed: 1982-12-15
Abstract: A pair of blanks for assembly into a disposable ashtray comprise a shell blank provided with an entry opening therein and which can be folded and secured to form a tube with said entry opening in one of its walls and a tray blank having opposed ends which can be folded to provide stoppers which are dimensioned to close each end of said tube when the formed tray blank is slid therein, said stoppers providing ends for the tube and end walls spaced away from said ends which define end walls of an ash deposit space beneath said entry opening. <IMAGE>
Patent GB-2114756-A (GB)
Title: Method and apparatus for obtaining NMR spectra
Inventor: GORDON ROBERT EMSLIE
IPC: G01R33/483
Filed: 1983-02-08
Abstract: A method of obtaining an NMR spectrum from a region of a sample in a static magnetic field along the Z axis comprises applying a gradient to said magnetic field in a direction (X) orthogonal to the X axis and applying rf energy 20, 21 such as to saturate all nuclei in the region except for a slab in a plane normal to the (X) direction, replacing the gradient by a second gradient in a second (Y) direction orthogonal to the Z & X directions and applying rf energy 23, 24 such as to saturate all nuclei in the region except for a slab in a plane normal to the (Y) direction, whereby nuclei in narrow column parallel to the Z axis have their spins left undisturbed, replacing the second gradient by a third gradient in the Z direction while applying an rf pulse 26 to the sample preferably to selectively irradiate nuclei in only a small region of the said column, and finally removing the third gradient and reading out the free induction decay signal from the selectively irradiated nuclei in the presence of a uniform static magnetic field alone. Selective saturation may be provided by totally saturating pulses 20, 23, followed by selective desaturating pulse 21, 24. A spin echo pulse 28 may be provided. <IMAGE>
Patent GB-2118976-A (GB)
Title: Direct reduction of iron ore
Inventor: CARTER GEORGE CLIFTON
IPC: C21B13/08
Filed: 1983-03-18
Abstract: To reduce iron ore to iron, bituminous coal is carbonised to form char and combustible gas and a quantity of iron ore and a quantity of the char in substantially stoichiometric proportions are introduced into a kiln where some of the combustible gas produced from the volatile materials in the coal is burnt to raise the temperature of the iron ore and the char sufficiently to cause reduction of the iron ore to metallic iron to take place. <IMAGE>
Patent GB-2126619-A (GB)
Title: Insulation mounting
Inventor: CALDWELL DENNIS JACKSON
IPC: E04F13/04
Filed: 1983-03-31
Abstract: Means and method of mounting heat insulation material on the outer surface 10 of a wall 1 [or like] (e.g. a "no-fines" concrete wall) consists of battens 3 which are affixed to the wall surface 10 in a spaced apart manner for receiving boards or panels 2 of heat insulating material (e.g. expanded polystyrene) located between them and against the wall surface (10). Outer members 30 of the battens 3 have a backing 31 of similar but more dense insulating material to maintain uniformity of insulation and also enable the composite batten 3 to bed against the wall surface. The battens (3) are secured by screws or studs 6 through clearance openings or slots 36 to permit relative movement between the battens 3 and wall 1. The battens 3 also provide mounting for outer cladding such as cement rendering 5 for which purpose mesh material 4 is secured to and spaced from the battens 3 to receive and reinforce the rendering 5. <IMAGE>
Patent GB-2139276-A (GB)
Title: Grain barrier
Inventor: SMITH KENNETH WALTER
IPC: E04H7/30
Filed: 1983-05-04
Abstract: A silo comprises a series of adjacent grain barriers, each barrier comprising support units 20 wall panel units 22 and ramp panel units 24, 25. Each unit 20 comprises a buttress 32 and a ramp support member 33, inclined to meet at a junction 34, and an upright 31 upstanding from the junction. The units 22 and 24, 25 are respectively supported by the uprights 31 and members 33 to meet at an obtuse angle to give a self clearing ramp sloping up to a wall set back over the top of the buttress for maximum storage capacity. The ramp and wall are linked by ties 36. <IMAGE>
Patent GB-2132307-A (GB)
Title: Reinforced hose structure having a tough flexible cover
Inventor: EISENZIMMER GEORGE WILLIAM
IPC: F16L11/08
Filed: 1983-09-27
Abstract: A reinforced hose structure ca comprises (A) a tube 12 of elastomeric material, two layers of helically extending reinforcing members (16, 18), the members of adjacent layers of which have an opposite sense orientation relative to the longitudinal axis of the hose the layer being encapsulated in elastomeric material 14 and (C) a cover of compounded carboxylated acrylonitrile-butadiene rubber 22 forming the radially outermost surface of the hose. <IMAGE>
Patent GB-2129844-A (GB)
Title: Obtaining pulp and solid fuel from peat moor upper layer
Inventor: LINDAHL JONAS ARNE INGVAR
IPC: D21B1/02
Filed: 1983-11-01
Abstract: The upper layer of a peat moor containing peat and woody material is fed into a rotary screen drum 2 and subjected to water jet pressure from one or more nozzles 3. Fine material comprising peat drops through slots 2' into tank 7 and coarse woody material is discharged into crusher 22. Separation of light peaty material from heavier particles is effected in tank 7, the former material being passed to a vibratory screen 10. The material crushed in crusher 22 is passed via tank 23, trap 25, and sedimentation tank 29 to a screw dewaterer 31, which also accepts reject material from the vibratory screen 10. Peaty material passing through the latter is passed via vortex cleaner 14 to screen 18 for separation of peat fibres from colloidal peat woody material discharged from screw dewaterer 31 is fed via disc refiner 34 to tank 19 to be admixed with peaty material from screen 18 to form a pulp suitable for making into board on papermaking machine 36. The colloidal peat may be mixed with a coarse fibre suspension in screw press 40, the mixture being shredded in shredder 41 and dried in drier 42 to form a solid fuel product. <IMAGE>
Patent GB-2133810-A (GB)
Title: False twisting
Inventor: ATKINSON COLIN
IPC: D02G1/02
Filed: 1984-01-06
Abstract: A method of false twist crimping a yarn comprises forwarding the yarn under tension from a feed device (12) through a heating zone (13) and a cooling zone (14) to a false twist device (15) whilst intermittently reducing and restoring the tension in the yarn to allow the twist inserted therein to travel around a yarn guide (20) which guides the yarn through a change of direction of travel between the heating zone (13) and the cooling zone (14). Guide 20 may comprise a disc (30) with fins (32), rotation of the disc thus causing the required tension variation in the yarn and allowing twist to run back past this point. <IMAGE>
Patent GB-2153159-A (GB)
Title: Submersible optical repeaters and optical fibre glands
Inventor: GUNN DUNCAN ALEXANDER
IPC: H02G15/14
Filed: 1984-01-19
Abstract: An optical repeater for an undersea telecommunications system has a tubular casing 1 closed by a bulkhead 2 with a tail cable gland 2 providing a common feed through for electrical power conductor 39 to power the regenerator and for optical fibres 28 for optical intelligence signals into chamber 10. Thence the electrical power conductor and optical conductor are fed through separate glands 40 and 32 which facilitates manufacture and individual pressure testing prior to assembly in the regenerator. <IMAGE>
Patent GB-2144512-A (GB)
Title: An apparatus for and a method of repairing or protecting an engine exhaust system
Inventor: BUDD GEORGE VICTOR
IPC: F01N13/18
Filed: 1984-07-17
Abstract: The apparatus comprises a flexible sheet (1) having an outer stainless steel layer (2) and an inner sealing layer (3). The flexible sheet (1) is wrapped around the area of the exhaust box (10) (or pipe) to be reinforced or repaired and secured in place with a Jubilee clip fastening arrangement (4) attached to receiving members (5) provided on the outer layer (2) so that a seal is provided between the inner layer (3) and the area to be protected or repaired.   <IMAGE>
Patent GB-2144914-A (GB)
Title: Apparatus for forming thin film heterojunction solar cells from i-iii-vi2 chalcopyrite compounds
Inventor: MICKELSEN REID A
IPC: H01L31/04
Filed: 1984-08-16
Abstract: An improved thin-film, large area solar cell, and methods for forming the same, having a relatively high light-to-electrical energy conversion efficiency and characterized in that the cell comprises a p-n type heterojunction formed of: (i) a first semiconductor layer comprising a photovoltaic active material selected from the class of I-III-VI2 chalcopyrite ternary materials which is vacuum deposited in a thin "composition-graded" layer ranging from on the order of about 2.5 microns to about 5.0 microns ( SIMILAR 2.5 mu m to  SIMILAR 5.0 mu m) and wherein the lower region of the photovoltaic active material preferably comprises a low resistivity region of p-type semiconductor material having a superimposed region of relatively high resistivity, transient n-type semiconductor material defining a transient p-n homojunction; and (ii), a second semiconductor layer comprising a low resistivity n-type semiconductor material; wherein interdiffusion (a) between the elemental constituents of the two discrete juxtaposed regions of the first semiconductor layer defining a transient p-n homojunction layer, and (b) between the transient n-type material in the first semiconductor layer and the second n-type semiconductor layer, causes the transient n-type material in the first semiconductor layer to evolve into p-type material, thereby defining a thin layer heterojunction device characterized by the absence of voids, vacancies and nodules which tend to reduce the energy conversion efficiency of the system.
Patent GB-2147530-A (GB)
Title: Glassware grinding & polishing apparatus
Inventor: JENKINSON MARGARET
IPC: B24D7/06
Filed: 1984-08-20
Abstract: A crystal wine glass 24 with a chipped rim is placed on a table 21, and an indicator 14 is set in dependence upon the amount of chipping to be removed. The glass 24 is then placed in a chuck 6, rotated by a motor 5, and lowered onto a spinning grinding disc 1. When the rim has been ground down by the preset amount, the spinning glass 24 is moved over spring loaded grinding and polishing bobbins 2 and 3, which provide a smooth bevelled finish to the rim. The apparatus operates under automatic control to perform a predetermined cycle. Also disclosed is a polishing device that accepts the chipped rim of a glass and can be operated manually. <IMAGE>
Patent GB-2164469-A (GB)
Title: Optical fibre cables
Inventor: HALE PETER GEORGE
IPC: H01B13/22
Filed: 1984-09-14
Abstract: Strain relief is provided in an optical fibre cable by housing an optical fibre package (A, A1, B, C) in a gapped hollow metallic tube (E), heating the metallic tube to about 100 DEG C at the point where the optical fibre package enters the metallic tube during manufacture, closing the gap, and subsequently applying a strength member layer around the tube, whereby an excess length of optical fibre package is provided and maintained within the cable due to differential thermal expansion between the core member and the optical fibre package. <IMAGE>
Patent GB-2148749-A (GB)
Title: Air intake for aircraft engines
Inventor: PANCOTTI SANTINO
IPC: F02M35/022
Filed: 1984-10-09
Abstract: An air intake filter (4) for aircraft, particularly helicopter, engines, comprises a box (5) having an inner compartment (14, 15) specially shaped so as to define, upstream of a respective engine air intake (3), when the filter is mounted on the aircraft fuselage 1, a chamber (36) which communicates with the atmosphere through separating passages (37, 38) extending through and communicating with the said compartment (14, 15). The latter communicates with the atmosphere through a pipe (22) supporting a ducted power fan (31). <IMAGE>
Patent GB-2169500-A (GB)
Title: Obstetrical chairs
Inventor: MEREDITH HADYN GWYN
IPC: A61G15/00
Filed: 1984-12-07
Abstract: An obstetrical chair having a two- part seat, one part 20 being fixed and the other movable, the movable part 21 being mounted on the fixed part to move between a first position in which it contributes to the seat surface and a second position in which it is out of co- operation with the fixed seat portion and allows access to the perineum area of a patient using the chair. The chair may be provided with a reclinable back rest 3 and an adjustable frame (36, fig. 2) for the patient to grip. The foot supports 26 may be removed and replaced by an extension to the chair to form a bed. <IMAGE>
Patent GB-2153991-A (GB)
Title: Central heating system
Inventor: COLIN ANTHONY FELIX
IPC: F24D12/02
Filed: 1985-01-29
Abstract: A central heating system includes a main oil, gas or solid fuel fired boiler 10, an auxiliary electrically powered flow boiler 20 and control means 30 for terminating main boiler operation and operating the flow boiler whenever electricity is the more economic fuel, for example during off-peak tariff periods. The boiler 20 may comprise four tubes (40, Figs. 2 and 3) connected in series and containing a respective immersion heater (43). <IMAGE>
Patent GB-2155346-A (GB)
Title: Reconfigurable toy and mechanism therefor
Inventor: OHNO KOUZIN
IPC: A63H33/00
Filed: 1985-03-06
Abstract: A mechanism forming part of a reconfigurable toy, comprises a first member (6) connected to another part (1) of the toy on a shaft (10) and movable axially of the shaft (10) relative to part (1), and a second member (7) pivotally connected to the first member (6) at a point (11a,b) spaced from the shaft (10) and being rotatable from a position in which it covers the first member (6) (dinosaur configuration - Figure 1) to a position in which the first member (6) is exposed (robot configuration, Figure 3). An assembly of a member 6, a member 7, a member 8 (pivoted to member 7) and a member 9 (pivoted to member 8) constitutes each side of the rear dinosaur body. Moving the two assemblies apart (members 6 slide axially along shafts 10) permits pivoting of members 7 and a tail 3 from their Figure 1 positions. Two dinosaur abdomen members 1b are pivotally mounted for opening outwardly to left and right. <IMAGE>
Patent GB-2173775-A (GB)
Title: Packaging sleeves
Inventor: MCPHERSON DONALD
IPC: B65D5/50
Filed: 1985-04-18
Abstract: A cardboard sleeve of the type used to contain metal or plastic tubs has a base 1, two opposite side walls 2, 3 and a top 4 adhered to a panel 5 hinged to one of the side walls 3. The panel 5 has a further member 6 hingedly attached to it shaped to fit automatically e.g. into a recessed top of a tub. <IMAGE>
Patent GB-2159585-A (GB)
Title: Turbine blade
Inventor: BUTTS DON
IPC: F01D5/18
Filed: 1985-05-08
Abstract: For cooling in turbine gas temperatures in excess of 1260 degrees C a gas turbine blade has an internal coolant passage 28 of width D and a plurality of longitudinally spaced substantially straight turbulator ribs 52 having a height E disposed substantially perpendicularly to the longitudinal axis of the coolant passage. The ratio E/D is within the range of about 0.07 and about 0.33 and the height E of the ribs lies in the range of about 0.010 inches and about 0.025 inches. These features may be utilized in a relatively small blade, e.g., 1.0 inch without the need for conventional, relatively complex cooling structures required for larger blades. <IMAGE>
Patent GB-2164732-A (GB)
Title: Heating water
Inventor: CAVE NORMAN MAWDSLEY
IPC: H05B3/60
Filed: 1985-07-24
Abstract: A heat device, particularly for heating water has passages running between an inlet (13) and an outlet (18). Closely-spaced electrodes (14, 15) connected to electrical supply are arranged within the passages and water is heated as it flows from the inlet to the outlet backwards and forwards between the electrodes. In one embodiment the electrodes (14, 15) are perforated parallel plates connected to a.c. mains supply and the passages are defined between coaxial tubes (9, 10, 11) extending perpendicularly to the plates. <IMAGE>
Patent GB-857591-A (GB)
Abstract: 857,591. Photo-electric detecting apparatus. SPOONER DRYER & ENGINEERING CO. Ltd. Feb. 18, 1959 [Feb. 19, 1958], No. 5348/58. Class 40(3). [Also in Group VIII] A paper web 11 in a paper-making machine is severed and the fan or fans 16 stopped when a photo-electric cell &c. detects a break or a tear in at least the marginal portions of the web. Actuation of a guillotine knife 34 may be electromagnetic &c., the fans being switched off at 23.
Patent GB-2187044-A (GB)
Title: Brush holder for electric motor
Inventor: LAU JAMES CHING-SIK
IPC: H01R39/39
Filed: 1986-02-26
Abstract: The brush holder comprises an elongate plate (10) of resilient material having an aperture (13) for receiving a brush root (14), at least two gripping portions (16,17) bent out of the plane of the plate and disposed along opposite edges of the aperture, and at least one and preferably at least two transversely extending stiffeners (20,21) which are provided to increase the plate's resistance to distortion across the width of the plate. The stiffeners are preferably in the form of ribs or beads pressed from the plate, although they could be separate parts secured to the plate. <IMAGE>
Patent GB-2188722-A (GB)
Title: Optical transducer
Inventor: OLIVER MICHAEL RODERICK
IPC: G01D5/30
Filed: 1986-04-05
Abstract: In an optical transducer for providing an optical output representative of a predetermined physical parameter e.g. pressure, temperature or the position of a piston 8, an input light beam is directed along a predetermined path 3 and deflected by an optical deflector 10 to an optical output path 4 is located in a predetermined position relative to the input path. The defector 10 comprises a deformable member such as an elastic hollow ball the shape of which is a function of the parameter. The ball preferably has a reflective outer surface. <IMAGE>
Patent GB-2187071-A (GB)
Title: Plant shelter
Inventor: HOLLADAY DAVID GEORGE
IPC: A01G13/04
Filed: 1986-04-22
Abstract: The shelter comprises at least one stake (1), having at least one longitudinally extending slot (2), and an enclosure which comprises at least one section (3) of material, the arrangement being such that said section or sections is or are attached to and removed from the stake or stakes by sliding an edge (4) or fold (5) of the or each section into a said slot. The or each section preferably comprise a flat sheet of relatively flexible material which, in use, is bent at least partially around the plant. Thus, one stake, and one section which encircles the plant, may be provided, or a number of stakes and sections may be provided which are arranged around the plant. Alternatively, the enclosure may be of tubular form and attached via a longitudinal fold in the material. As a further alternative, the section may be of rigid sheet, e.g. of faced corrugated plastics, which is sharply bent along appropriate corrugations to surround the plant. <IMAGE>
Patent GB-2180175-A (GB)
Title: Apparatus for making scribed circuit boards
Inventor: SWIGGETT BRIAN EDWARD
IPC: H05K3/10
Filed: 1986-07-16
Abstract: An apparatus for scribing a conductor (32) to a surface (300) of a substrate in a predetermined pattern between two points on said surface is claimed, each of said points defining a terminal point. The insulated conductor wire (32) is coated with an adhesive which is in the non-tacky state but is activatable to be an adhesive at the time the conductor is applied, and which returns to the non-tacky state after fixing the conductor on the surface. The apparatus includes pressure means (204) for bringing a pressure exerting part into pressure contact with said conductor after it has been applied for fixing said conductor to said surface, said pressure means including an indexing head (54) with means for rotating (162) said indexing head to a first position for engaging said fixing means (280) with said conductor, and into a second position for engaging said pressure exerting part (200) with said conductor.
Patent GB-2186479-A (GB)
Title: Portable cooker
Inventor: OAKES MALCOLM CAMPBELL
IPC: A47J37/07
Filed: 1986-10-01
Abstract: A cooker, such as a barbecue, has a base 10 in the form of a sheet metal tray, support means 32, being provided which is movable between a first, use, position wherein it is locked beneath the base 10 to support it,and a second, transport, position (Fig.1). There can be a sheet metal lid 20 which, in the transport position is secured to the base 10 by the support means. <IMAGE>