baber/WOPTO huggingface dataset:
Patent GB-2028952-A (GB)
Title: Longitudinally Adjustable Strut
IPC: B64C27/54
Filed: 1979-03-13
Abstract: A longitudinally adjustable strut for use, mainly in the rotor head of a helicopter, provides simple manual adjustment of length with positive engagement of the parts to prevent accidental movement. The strut has a casing 4 which engages respective rod parts 12 and 14 by opposite hand threads so that rotation of the casing produces extension or retraction of the rod parts and hence the strut. A sleeve 26 engages the casing 4 telescopically and is urged by a spring 36 into the securing position shown where the sleeve interlocks with the casing and a flange 32 of the rod part 12 by means of splines (28, 30) to prevent movement. The sleeve may be slid downwardly to release the splines from flange 32 to effect adjustment by manual rotation of the casing through the sleeve. <IMAGE>
Patent GB-2018861-A (GB)
Title: Method and apparatus for mining minerals
IPC: E21C27/24
Filed: 1979-04-03
Abstract: Earth formations are mined by a machine comprising an advanceable body 12, drive means mounted on the body 12, a rotatable carrier 14 driven by said motor means in one direction about its axis, and one or more cutterbit- carrying elements 18 so mounted on the carrier 14 as to be freely rotatable with respect thereto. The or each element 18 is freely rotatable about an axis parallel to the axis of rotation of the carrier 14. Engagement of an earth formation by the cutter bits causes each element 18 to rotate about its longitudinal axis in a direction that is reverse to that of the power driven carrier 14. <IMAGE>
Patent GB-2020513-A (GB)
Title: Improved method and apparatus for securing data transmissions
IPC: G07F7/10
Filed: 1979-04-19
Abstract: The method and apparatus obviate the need for transmitting user-identification information such as personal identification number (PIN) in the clear from station to station, e.g., from the station utilized by the user to enter his PIN and initiate a transaction, to the station that processes the transaction. The PIN of a system user is encrypted, using module 15 receiving a random sequence RN, and transmitted as identification data ID. The signal ID as received is compared with signals ID, corresponding to the allowable PIN's, and generated or stored at the receiver. Encryption (encoding) and decryption (decoding) of data during a transaction uses encryption and decryption keys produced from different (independent) PIN's. The system obviates the need for paired encryption/decryption modules on a data link while nevertheless maintaining a high level of security in the data transferred. <IMAGE>
Patent GB-2023407-A (GB)
Title: Food container
IPC: A47G19/06
Filed: 1979-06-11
Abstract: A food container (3) comprises a base portion (10) bounded by an upstanding peripheral side portion or portions, the base portion (10) being adapted in use to fit closely against the rim (5) of an underlying beverage container (1), the upstanding peripheral portion being formed with a slanting open-ended groove (7) or channel extending from a point on the side portion to a point on the base portion (10) to house a beverage straw (13). <IMAGE>
Patent GB-2041085-A (GB)
Title: Fuel supply apparatus for gas turbine engine
IPC: F02C7/228
Filed: 1979-10-26
Abstract: An apparatus for controlling fuel supply to one group of burners in a gas turbine engine which includes a plurality of such groups, comprises a control valve 18 having an inlet 19 communicating with a metered fuel supply, a first, restricted outlet 20 and a second outlet 21, the outlets 20, 21 communicating with said one burner group. A control element 22 is movable in response to reduction in a servo pressure in a line 29, first to permit fuel flow to the outlet 20 and subsequently to the outlet 21. The rate of movement of the element 22 is limited by a flow restriction in the line 29. <IMAGE>
Patent GB-2039706-A (GB)
Title: Animal rearing house
IPC: A01K1/00
Filed: 1979-12-14
Abstract: An animal rearing house comprises a floor, walls and a roof defining an enclosure of generally elongate plan, animal cages 12 of rectangular plan disposed with their major axes transverse to the major axis of the house, and means 40, 44, 46 for directing an air stream through the house in the elongate direction thereof so that the said air stream is transverse to the major axes of the cages. <IMAGE>
Patent GB-2044864-A (GB)
Title: Friction clutch driven plates
IPC: F16D13/64
Filed: 1980-03-04
Abstract: A friction clutch driven plate having two co-axial annular friction facings (12) and (13) each moulded directly onto a respective carrier plate (14) and (15), the two plates being joined together at their inner margin so that the backs of the two carrier plates are resiliently spaced apart allowing the friction surfaces to flex to conform to the contours of a driving member surface. The resilience may be provided by the dished or corrugated form of one plate or by a star-shaped interlayer of rubber between the plates. <IMAGE>
Patent GB-2079025-A (GB)
Title: Model skull
IPC: G09B23/32
Filed: 1980-05-09
Abstract: A model skull is formed from bendable sheet material such as card or thin metal sheet. The sheet material is initially flat and folded into a three dimensional representation of a particular part of the skull. A first sheet 100 is formed into a representation of the cranium and a second sheet 300 is formed into a representation of the lower jaw bone which is pivotally mounted by pins 18a to the cranium. A third sheet 200 is formed into a representation of eye sockets 22 which are mounted in the cranium to correspond with eye apertures 1. The folded sheets are retained in their desired three dimensional form by pins or co-operating tongues and slots. Preferably the sheets 100, 200 and 300 are press-outs from a single sheet and each is symmetrical about a centre line corresponding to the centre line of the skull. <IMAGE>
Patent GB-2051063-A (GB)
Title: Preparing N-methylcarbamyl Fluoride
IPC: C07C239/00
Filed: 1980-05-29
Abstract: A process for preparing N- methylcarbamyl fluoride, which comprises passing anhydrous hydrogen fluoride into methyl isocyanate in the absence of added solvent.
Patent GB-2082328-A (GB)
Title: Continuously Monitoring a Subject for Pulmonary Oxygen Toxicity
IPC: A61B5/08
Filed: 1980-08-13
Abstract: A device for continuously monitoring a subject for pulmonary oxygen toxicity comprises a force transducer 10 whose ends are attached to a band which passes around the subject's chest whereby the expansion and contraction of the chest wall during respiration results in a roughly sinusoidal output signal have maximum and minimum excursions FH and FL, respectively. A micro-processor (12) is programmed firstly to establish the time period within which the signal changes between two predetermined trigger values [FL+0.4 (FH-FL)] and [FL+0.9 (FH-FL)] on both the inspirational ( DELTA ti) and expirational ( DELTA te) parts of the signal and then to establish the ratio   <IMAGE> of the latter two time periods. The operation is repeated on a plurality of successive breaths and the average value of the ratio is calculated and displayed (at 16) to indicate the oxygen toxicity. <IMAGE>
Patent GB-2061148-A (GB)
Title: Cleaning metal surfaces
IPC: B24C1/00
Filed: 1980-09-15
Abstract: This invention consists of a method of cleaning metal surfaces, which is particularly suitable for removing driving band deposits or carbonaceous residues from gun barrels. The method involves bombarding the surface or barrel with particles of a dispersion-hardened plastic material comprising abrasive particles in a plastic material matrix, a preferred material being a glass bead/Nylon 66 composite. In an alternative embodiment the dispersion-hardened particles are produced in-situ in a barrel by fragmentation, on firing the gun of a device inserted into the barrel together with a round and propellant charge, again preferably made of the glass bead/ Nylon 66 composite. Three forms of such a device are described: a sheath to be fitted over the nose of a round in small calibre weapons, a disc to be inserted between the round and propellant charge, and a strip of frangible bags or containers containing pellets of the material, rolled into a ring and inserted between a round and a propellant charge.
Patent GB-2076196-A (GB)
Title: Improvements in and relating to document readers
IPC: G06K17/00
Filed: 1980-10-27
Abstract: A document reader is described through which a sheet of paper (24) can pass with lines of information thereon (typically answer selections by an examination candidate) transverse to the direction of movement. Each line of information includes a line of boxes (28; 30) one of which is half coloured-in to designate the selected answer. An answer is cancelled by colouring-in the whole box. Empty or fully-coloured-in boxes are disregarded. A line of photocells register with the columns of boxes (28; 30) and electrical signals obtained as a half coloured box passes a photocell are processed to a computer which compares the candidate's selection with stored correct answers and counts up the candidate's correct answers, and expresses this as a percentage of the total. The photocells may have fields of view which are small relative to the box areas so that pulses of varying width are obtained which distinguish between half and completely coloured-in boxes. Alternatively, the fields of view may be commensurate with the completely filled box area so that an amplitude variation will occur distinguishing between completely coloured-in and half coloured- in boxes. <IMAGE>
Patent GB-2067030-A (GB)
Title: An electric power supply control arrangement
IPC: H02M5/27
Filed: 1981-01-02
Abstract: The arrangement digitally controls the operation of an electronic switching arrangement connected between a load and an alternating current supply P, Q, R and comprises phasing means 15, 17, 19, 23, 25 for generating two regular series of timing pulses synchronized with the supply, the second series having a higher frequency than the first, a signal generator which generates a digital signal representative of times relative to the first series of timing pulses at which selected switches of the switching arrangement are required to start to conduct, a resettable counter which counts the second series of timing pulses, and means for repeatedly determining the relation between the contents of the counter and the digital signal which supplies control signals to render the selected switches conductive when the relation has a predetermined value, the selection of switches being determined by a look-up table. The arrangement is conveniently realised by means of a microprocessor 13. <IMAGE>
Patent GB-2073266-A (GB)
Title: Continuous washing of textiles
IPC: D06B23/16
Filed: 1981-03-31
Abstract: Textiles 1 such as yarns, a band or web or a cloth are washed by being fed continuously through a high pressure steamer 2 maintained at a temp. of 100 DEG  to 160 DEG C. A zig-zag path for the textile in the steamer is defined by rolls 7 and 8, and washing water 10 is contained in tanks 9. The wet-heat conditions cause the textile to swell, and the swollen textile is intermittently and repeatedly immersed in the hot washing water 10. After each immersion, the textile is squeezed between squeeze bars 11, to assist draining of water therefrom. <IMAGE>
Patent GB-2074331-A (GB)
Title: A Method of Adjusting a Reproduction Camera
IPC: G03F7/20
Filed: 1981-03-31
Abstract: When focussing an image on a frosted side of a glass plate and observing the sharpness from the opposite side of the plate, parallel axis errors appear invariably. In the present method the image is focussed on the side of the glass plate remote from the objective. The glass plate is removed and replaced by the material to be exposed, and a calculating unit determines the focussing correction required to compensate for the absence of the glass plate. The calculation is performed by requiring that the optical path lengths fulfil the lens formula. <IMAGE>
Patent GB-2075184-A (GB)
Title: Monitoring rotor vibration
IPC: G01H9/00
Filed: 1981-04-07
Abstract: To determine when a rotating body 1 is not rotating truly, a beam of visible, IR or UV radiation 4 is reflected off a reflective surface 5 on the rotating body to a sensor 6. When the body is not rotating truly, the sensor detects a variation in the reflected beam and, if this exceeds a certain value the driving power rotating the body is switched off. <IMAGE>
Patent GB-2074094-A (GB)
Title: Improvements relating to plastics laminates
IPC: B32B27/12
Filed: 1981-04-16
Abstract: A laminate, for use eg in the manufacture of luggage has a first outer layer (1) formed from flexible, closed cell polyethylene and a second outer layer (2) formed from a fibrous sheet material e.g. a textured polypropylene. Between and bonded to these layers is an intermediate layer (3) of polyethylene which is less dense than the outer layer of polyethylene. The first outer layer is preferably flexible and self-supporting. The density of the intermediate layer may be 25% or less of that of the polyethylene outer layer. The layers may be bonded by flame lamination. <IMAGE>
Patent GB-2077955-A (GB)
Title: Apparatus for producing the pattern program for a flatbed knitting machine from a multi-colour pattern original
IPC: G06F3/037
Filed: 1981-06-03
Abstract: A multi-colour pattern original (3) is scanned to produce a pattern program for the electronic control of a flatbed knitting machine by reading the data information into an image store with the aid of a sensor (4). The apparatus comprises a receiving surface (2) for the pattern original (3), an optical or magnetic sensing pen (4) electronically connected to a microprocessor which breaks down the data information produced by the movement of the sensing pen over the pattern original into XY- coordinates. A further microprocessor can also be provided to convert the information in the image store into data for a technical pattern draft. Terminals 6,7 are for connection to a printer or VDU. <IMAGE>
Patent GB-2081785-A (GB)
Title: Security Device
IPC: E05B65/08
Filed: 1981-07-17
Abstract: A security device (35) for resisting opening of a sliding door or window (36) mounted in a frame (37) comprises a bar (39) in the ends of which oppositely screwed rods (40), (41) are received. The rods (40, 41) may be inserted in bores in attachment means (42, 43) secured respectively to the frame (37) and door (36). Rotation of bar (39) in situ ensures that the door (36) is pushed home into the frame (37). Other attachment means and adjustment devices are disclosed. <IMAGE>
Patent GB-2084424-A (GB)
Title: Generating Clock Pulses for Sampling PAL Colour Television Signals
IPC: H04N11/04
Filed: 1981-09-09
Abstract: The PAL colour television system utilises a colour subcarrier frequency which (ignoring picture frequency terms) is R/4 times the line frequency. Sampling pulses are generated with a frequency of p/q (for example 3) times the subcarrier frequency, pR/q not being an integer. In order that samples on successive scanning lines be substantially vertically aligned, a phase shift corresponding to the fractional part of pR/4q is applied at the end of each line: for a three times subcarrier sampling frequency this involves a phase advance of 90 DEG . Additional phase shifting at the end of each field may also be included to compensate the picture frequency term in the PAL subcarrier equation and obtain vertical alignment between samples on successive interlaced fields. <IMAGE>
Patent GB-2091292-A (GB)
Title: Separating Wax From Simmondsia Using Gas Under Supercritical Conditions
IPC: C11B1/10
Filed: 1981-12-09
Abstract: Wax is extracted from seed kernels of species of Simmondsia by means of gas under supercritical conditions, separation of the wax being achieved by providing sub-critical conditions, the gas being returned into the extraction stage and the wax being removed. CO2 is the preferred gas.
Patent GB-2096921-A (GB)
Title: Granular filter medium for removing oil from oily water
IPC: B01D17/04
Filed: 1982-04-05
Abstract: The filter medium comprises smooth surfaced, non-porous granular glass or filter sand of which some has been treated with a caustic solution to impart active hydroxyl groups thereto and thereafter treated with a trialkoxysilane. The average concentration of treated medium corresponds to up to 3 to 3.5 grams trialkoxysilane per litre of granular medium in the case of filter sand and up to 1.5 to 1.8 grams trialkoxysilane per litre of medium in the case of granular glass, the desired average concentration being attained either by treating the medium with a corresponding amount of the trialkoxysilane or by treating with a higher amount and diluting the treated medium with untreated medium. The filter medium is backwashable to refresh its lipophilic properties, and does not readily plug or foul when in use.
Patent GB-2097898-A (GB)
Title: Control valve
IPC: F16D48/02
Filed: 1982-04-13
Abstract: A control valve for a clutch hydraulic slave cylinder comprises a member (8) defining an orifice (15); and a resilient plate (19) arranged to control flow of fluid through the orifice by flexing movement relative to the orifice, freely movable between first and second stops (11, 18). The plate is arranged to engage the first stop (11) to control fluid flow in one direction (right to left) through the orifice (15) by said flexing movement (dependent on fluid pressure) towards or away from the orifice; and is arranged to engage the second stop (18) to permit relatively greater flow when fluid flows in the opposite direction through the orifice. <IMAGE>
Patent GB-2123051-A (GB)
Title: Fencing rail members
Inventor: RUDDOCK BERNARD JOHN
IPC: E04H17/14
Filed: 1982-07-02
Abstract: A composite member for use as a substitute for a wooden rail in fencing, especially in agricultural and farming, where livestock need to be confined. The proposed composite member comprises a plurality of wire members, 1A and 1B, e.g. of stranded wire, coated and spaced apart by a synthetic resin material 2 forming a web, which preferably has one or more longitudinal ribs 2A to facilitate coiling. <IMAGE>
Patent GB-2128536-A (GB)
Title: Apparatus for manufacturing concrete pipes
Inventor: OGURA MITSUHARU
IPC: B28B21/76
Filed: 1982-10-08
Abstract: An apparatus for manufacturing concrete pipes includes a cylindrical mould (A) provided with a specially formed end ring (26) releasably secured by clasps (5) to a flange (2) at the belled end of the mould. A device (28) is provided for detaching this end ring (26), and another device, disposed at the opposite or spigotted end of the mould (A), is operable to thrust a hardened concrete pipe (B) out of the mould (A) through the belled end after removal of the end ring (26). The clasps (5) are pivoted to a ring releasing position by drive rods actuated by cylinders. The device (28) has jaws (12) with hooks (13), the jaws being movable to a desired radial position along radial screw threaded rods (11) rotatable from a common central drive gear. In the desired radial position the hooks (13) engage the released ring and pull it away from the moulded pipe. <IMAGE>
Patent GB-2129342-A (GB)
Title: Method for making a reinforced cast article
Inventor: BAN KEISUKE
IPC: B22D19/14
Filed: 1982-10-21
Abstract: To produce a connecting rod (10), a bundle of undirectional inorganic reinforcing fibres (F) is shaped such that its second moment of area about the Y axis of the connecting rod is less than its second moment of area about the X axis of the connecting rod (for example an ellipse as shown in Fig. 4) and is positioned in a mould such that a fixed minimum gap surrounds it. A molten light metal alloy is squeeze cast into the mould forming a matrix of the alloy and the bundle. Also disclosed is a method of preparing a coherent bundle of uni-directional inorganic fibres, at least some of which are metallic or metal coated, wherein the bundle is placed into a shaping container and heated to partially fuse the metallic or metal coated fibres to each other. <IMAGE>
Patent GB-2110056-A (GB)
Title: A communication system interconnecting radios and operators located at different positions
Inventor: PUDSEY DAVID GRAHAM
IPC: H04B1/00
Filed: 1982-10-26
Abstract: A known system for interconnecting a number of operators to a number of radios uses a computer to establish which one of the radios is available to provide a facility requested by an operator and then to connect that radio with an operator. The programming of a general purpose computer to do this job is very complex. Also it may be difficult for an operator to be sure that the computer is working correctly and a fault in the computer or its program can result in a complete breakdown of the system. The illustrated apparatus avoids these problems by using a control bus 5 and an audio bus 6 to interconnect operator positions 1 and 2 and radio positions 3 and 4. Each position 1,2,3 and 4 is allocated, by a timing circuit 7, time slots on the control bus 5 during which it applies digital words to the control bus indicating its own identity and information to be transmitted to other positions. 
<??>Because data applied to the control bus by the operator positions 1 and 2 is time multiplexed, requests from positions 1 and 2 for a particular radio facility are dealt with turn by the radio positions 3 and 4 so that operators at positions 1 and 2 cannot compete for the same radio facility. In this way the need for a general purpose computer and its associated software is avoided. Furthermore, each radio at positions 3 and 4 is able to communicate to the operators at 1 or 2 its current mode of operations so that the operators can always be sure that the system is operating correctly. 
<??>Another advantage of the illustrated system is that a malfunction at any one of the positions 1,2,3 and 4 does not cause a complete breakdown in the system. The only central component critical to the operation of the system is the timing circuit 7 and, in an alternative system, this could be replaced by individual timing circuits at each of the positions 1,2,3 and 4.
Patent GB-2114967-A (GB)
Title: Sinterable fluorite oxide ceramics
Inventor: BROOK RICHARD JOHN
IPC: C01G25/02
Filed: 1983-01-26
Abstract: For fluorite oxide compositions, MgO is used as a sintering additive in quantities of up to 1.0 mol percent.
Patent GB-2116362-A (GB)
Title: Excess voltage arrester
Inventor: ROBERTSHAW ROBERT GIBSON
IPC: H01T4/12
Filed: 1983-03-07
Abstract: An excess voltage of the gas- filled type has a fuse element (9) within its envelope (1, 3, 5), the fuse element being arranged so that it may be connected in a supply line to an equipment to be protected against excess voltage whilst the arrester discharge gap is connected across the equipment to be protected in the usual manner. As shown, the arrester may have coaxial inner 7 and outer 1 conductors so designed as to mate with coaxial line connectors, with the fuse being formed from a reduced diameter portion 9 of inner conductor 7 located within ceramic end plug 5 and out of contact with the arrester gas filling, e.g. argon and hydrogen at 20 torr. A conductive stripe may be provided on an end plug to stabilise the arrester; also a radioactive element may be provided, either as a component of the conductive stripe or as tritium in the filling. <IMAGE>
Patent GB-2119303-A (GB)
Title: Mould
Inventor: MCBROOM GEOFFREY PETER
IPC: B29C33/26
Filed: 1983-03-31
Abstract: An aerofoil mould is described which consists of two mould parts 1,2 hinged together by a flexible mould part 3. In use fibre-reinforced plastic material is laid up on surfaces 1a, 2a and on flexible mould part 3, inserts are incorporated if desired, the mould closed and the article cured. <IMAGE>