baber/WOPTO huggingface dataset:
Patent GB-2142452-A (GB)
Title: Improvements in or relating to phase shift measurement or generation
Inventor: SIDEY ROGER CHARLES HEY
IPC: G01R25/00
Filed: 1984-04-12
Abstract: A controlled oscillator 2 has a first output 4 which is indicative of the sign of a control signal supplied to the control input 3 of the oscillator, and a second output 5 which produces clock pulses having a frequency proportional to the modulus of the control signal, so that this frequency is essentially zero when the control signal is zero. A digital phase shifting circuit 1 is connected to the outputs of the oscillator and provides reference signals REF and REF + x of the same frequency but with a relative phase shift x which is proportional to the algebraic sum of the number of clock pulses from the oscillator, the sign of each clock pulse being determined by the contemporary value of the signal at the output 4. <IMAGE>
Patent GB-2141954-A (GB)
Title: Roll forming apparatus
Inventor: ADDISON GORDON DOUGLAS
IPC: B21D5/08
Filed: 1984-06-19
Abstract: The apparatus, for shaping a workpiece made from malleable metal strip driven through the apparatus, comprises a main frame on which are mounted driven bottom rollers 15 for driving and supporting the workpiece through the apparatus and top rollers 35 pressing the strip against the bottom rollers. The top rollers are mounted on side sub-frames which are traversible by a shaft 22 towards and away from the longitudinal centre-line of the apparatus and which carry forming tools. The subframe may carry forming rollers mounted in cylindrical carriers which are themselves rotatably mounted end to end in support tubes extending parallel to said centre-line and are rotationally adjustable independently of each other, for example to allow the amount of angular deformation of the strip to be adjusted without necessarily changing the forming tools. Bars 41 provided to effect bending may be readily adjusted for size variation. <IMAGE>
Patent GB-2155880-A (GB)
Title: Increasing the efficiency of bladed rotors
Inventor: CHAPLIN GEORGE BRIAN BARRIE
IPC: B63H3/00
Filed: 1984-12-03
Abstract: The effects of non-uniformities in the fluid stream into a bladed rotor eg a marine screw propeller (11) rotating in a medium to drive a body (10) supporting the rotor through the medium are reduced by generating a timing signal (from 19) synchronised with the rotation of the rotor and using this timing signal and the output of one or more sensors (14-16) to reduce the perturbations in rotor performance by varying the pitch of at least one blade (11a, 11b, 11c) cyclically (via 20a or 20b), and/or by varying the pressure in at least one localised region of the medium through which the rotor turns. Various embodiments for locally varying pressure in the fluid stream are described including air jets in an annular shroud or in the rotor blades, adjustable guide vanes ahead of the rotor, trim tabs on the blades and reciprocable rams disposed around the rotor. <IMAGE>
Patent GB-2155145-A (GB)
Title: Fluid damper with piston skirt providing fluid end stop
Inventor: BRAUN RAINER
IPC: F16F9/32
Filed: 1985-02-25
Abstract: In a damper having a cylinder 2 delimited by a bottom valve 8 and a piston 11 which is fastened to the end of a piston rod 9 and is guided in the cylinder by a piston skirt 17, it is proposed, for an unchanged overall length of the damper and unchanged stroke of the piston rod, to increase the guided length, that is to say the effective interval between the piston guide means 12 and the piston rod guide means 5. According to the invention, this is achieved in that the piston skirt 17 projects axially towards the bottom valve 8 beyond the piston rod end and the piston fastening means 14, and enters into an annular gap 18 between the bottom valve 8 and the cylinder 2 on maximum possible entry of the piston rod. This provides increased damping of the end of the stroke. <IMAGE>
Patent GB-2170338-A (GB)
Title: Portable magnetically encoded data analyzer
Inventor: AUBREY KENNETH RAYMOND
IPC: G07B15/02
Filed: 1985-05-23
Abstract: A portable analyzer for automatically reading, de-coding, and displaying data magnetically coded on cards 34 such as tickets comprises a card reader 16, a data processing unit 18 for de-coding information read from a card, and a visual display device 20 for automatically displaying the de-coded information. The analyzer is provided in a self-contained, portable unit which includes a battery power source 22. <IMAGE>
Patent GB-2162712-A (GB)
Title: Electrical switch
Inventor: PURCELL JOHN RUSSELL
IPC: H01L39/20
Filed: 1985-07-19
Abstract: An electrical switch comprises a length of filamentary superconductive wire (16) having a plurality of normally conductive stabilizing segments (34) thereon. <IMAGE>
Patent GB-2163896-A (GB)
Title: Transverse flow CO2 laser
Inventor: KLINGEL HANS
IPC: H01S3/03
Filed: 1985-07-23
Abstract: A transverse flow CO2 laser with at least several hundred watts output, with a transverse flow duct 17 in which is disposed the discharge path for the laser beam, with mirror means for the laser beam in the end zone of the transverse flow duct and with two high frequency electrodes 13, 18 extending longitudinally of the transverse flow duct, has at least two parallel circular thin-walled tubes 11, 16 of dielectric material the outer surfaces of which form the duct faces and which contain the electrodes 13, 18. <IMAGE>
Patent GB-2182488-A (GB)
Title: Integrated circuit resistors
Inventor: BAKER ROGER LESLIE
IPC: H01L21/02
Filed: 1985-11-02
Abstract: High value resistors in integrated circuits are fabricated by oxygen doping intrinsic polycrystalline silicon to form semi-insulating material, and doping this material with boron, phosphorus or arsenic to provide the desired resistivity. The process provides a resistors of low temperature coefficient and low sensitivity to surface contamination. <IMAGE>
Patent GB-2167605-A (GB)
Title: Support for a current transformer on a switch terminal
Inventor: DAVENPORT JOHN LEYTON
IPC: H01F27/06
Filed: 1985-11-15
Abstract: A switch in which input and output conductors 8, 38 extend through insulating bushings supported by an outer casing 4, in which at least one bushing comprises an insulating tube 9 having one end projecting outwards from the casing, a removable weathershield 21-25 surrounds the outer end of the tube, and a current transformer 15 is fitted around the tube between the casing wall and the weathershield, so that it can be withdrawn from the circuit breaker over the tube following removal of the weathershield. The switch is constituted by a vacuum switch unit 1 having a fixed and movable contacts 2,3, the latter being actuated by a rotatable shaft 27 projecting from the casing 4. A flexible coupling 34 joins the movable contact 3 to a lead 38. <IMAGE>
Patent GB-2183679-A (GB)
Title: A method of depositing an epitaxial silicon layer
Inventor: BURNS GORDON PETER
IPC: C30B25/10
Filed: 1985-12-06
Abstract: The deposition of an epitaxial silicon layer onto a monocrystalline silicon substrate from a silicon carrier gas may be effected by decomposing the silicon carrier gas on the substrate during a high temperature heat pulse. Removal of oxide from the substrate before deposition is effected on heating the substrate to over 1000 DEG C at the start of the heat pulse 41 in the presence of the silicon carrier gas. Deposition is effected while the substrate is maintained at a high temperature 42 and the deposition is terminated by allowing the substrate temperature to fall to a temperature below the minimum at which epitaxial deposition occurs. A radiantly heated reactor is used to obtain high rates of temperature rise and fall, for example 20 DEG C to 1150 DEG C in 12 seconds 41. Thin undoped layers may be grown on highly doped substrates with small transition depth D, for example, a 0.43 mu m epilayer on a substrate having an arsenic concentration of 2.4x10<25>m<-3>, has D = 62nm. Such a method is particularly useful in the production of VLSI devices. <IMAGE>
Patent GB-2185517-A (GB)
Title: A clamp especially for an aerial bundled cable
Inventor: TURUNEN HARRI JOHANNES
IPC: F16L3/233
Filed: 1986-01-22
Abstract: A clamp for an aerial bundled cable to be installed on walls of buildings and wood poles in particular, which clamp comprises a strap (6), an installation plug (5) and a body portion (1) provided with an installation groove (2) for the cable and a nail passage (3) provided for a fastening nail of the clamp and extending essentially perpendicularly with respect to the axial direction of the cable. In order to enable installation of the clamp to the supporting structure thereof also in such a manner that the installation groove will be vertically positioned, a second nail passage (4) is provided which extends from the bottom of the installation groove (2) of the body portion (1) through said body portion (1) essentially perpendicularly to said first nail passage (3). The second nail passage (4) advantageously extends through the first nail passage (3). <IMAGE>
Patent GB-2170429-A (GB)
Title: Heat resistant precoated steel sheet and process for the production thereof
Inventor: MASUHARA KENICHI
IPC: C09D167/00
Filed: 1986-01-24
Abstract: A heat resistant precoated steel sheet suitable for use in the manufacture of a muffler of an automobile exhaust gas system comprising:    a hot dip aluminized steel sheet, a chromate pretreatment layer formed on at least one surface of said hot dip aluminized steel sheet and having a chromium pick-up of 10 to 50 mg/m<2>, a primer coat formed on said pretreatment layer and comprising a cured polyamide imide resin and 8 to 52 parts by weight, based on 100 parts by weight of said resin, of strontium chromate intimately admixed with said resin, and a top coat formed on said primer coat and comprising a cured silicone-modified polyester resin with a modification degree of from 30 to 50% and 8 to 32 parts by weight, based on 100 parts by weight of said resin, of aluminum scale intimately admixed with said resin.
Patent GB-2191637-A (GB)
Title: A method of assembling an electric motor
Inventor: STROBL GEORG
IPC: H02K15/16
Filed: 1986-06-04
Abstract: A guard (22) of non-chippable, conveniently flexible plastics, material is placed over one end of the stator magnet or magnets (12, 13) of an electric motor prior to the insertion of the armature (15) in order to protect the magnets from being chipped by accidental contact with the lamination stack or end turns of the armature. <IMAGE>
Patent GB-861470-A (GB)
Title: Improvements in or relating to the manufacture of steroids
IPC: C12P33/00
Filed: 1957-07-15
Abstract: 11a -Hydroxy-steriods are prepared by contacting an 11-methylene steroid with aerobically growing fungus of the genus Sporotrichum. In the case of steroids of the pregnane series, degradation of the side chain also takes place at an aeration rate of 5 to 15 litres of air per minute per 100 litres of medium to form an 11a , 17b -dihydroxy-androstane.  Thus the process may be applied to an 11-oxygenated pregnane so that only degradation takes place in the side chain to form an 11-oxygenated-17b -hydroxy-androstane.  The fungus may be of the species sulphurescens, carnis, epigaeum, bombycinum, foliicola Oud., pulviniforme Thum, olivaceum Fr, globuliferum, maritumum, orthophilum, griseolum, roseolum Oud. et Beijerinck, poae PK, equi, Beurmanni M. et Ram., and Schencckii.  In the examples 11a ,17b -dihydroxy-17a -methyl - 1,4 - androstadien - 3 - one is prepared from 1 - dehydromethyltestosterone, 11a ,17b -dihydroxy - 1,4 - androstadien - 3 - one is prepared from 1-dehydrotestosterone, 21-hydroxy-1,4 - pregnadiene - 3,20 - dione, 1,4 - pregnadiene - 3,20 - dione, 17a ,21 - dihydroxy - 1,4-pregnadiene - 3,20 - dione, 17b  - hydroxy - 1,4-androstadiene - 3 - one and 11a  - hydroxy - 1,4-pregnadiene - 3,20 - dione, is subsequently acetylated to form the corresponding 11a ,17b -diacetoxy compound, 11a -hydroxy-1,4-androstadiene - 3,17 - dione is prepared from 1,4-androstadiene - 3,17 - dione and is subsequently acetylated to form the corresponding 11a  - acetoxy compound, 11a  - hydroxy - testosterone is prepared from progesterone, desoxycorticosterone, 17a ,21 - dihydroxy - 4 - pregnene - 3,20 - dione, 17a  - hydroxy - progesterone, 11a  - hydroxy - progesterone, 11a ,21 - dihydroxy - 4 - pregnene - 3,20 - dione and testosterone; 11a -hydroxy-progesterone is prepared from progesterone; and 11a ,21 - dihydroxy-1,4 - pregnadiene - 3,20 - dione is prepared from 21 - hydroxy - 1,4 - pregnadiene - 3,20 - dione.  Specifications 724,094 and 767,422 are referred to.
Patent GB-2177897-A (GB)
Title: Cooking apparatus
Inventor: MOFFAT EDWARD MCKINLEY
IPC: F24C15/04
Filed: 1986-06-20
Abstract: Apparatus for cooking food items comprises a heating chamber (1) provided with an access opening and a door (33) having inner and outer glazing panels (26, 24). The inner glazing panel (26) is dimensioned to completely cover the access opening (50) when the door is closed. <IMAGE>
Patent GB-2187633-A (GB)
Title: Earring fittings
Inventor: MCCUE HENRY NORMAN
IPC: A44C7/00
Filed: 1986-09-29
Abstract: An earring fitting 1 made from wire has a first arm 3 pivotable about 10 on a second arm 4, a catch 6 at the free end of which engages the end 7 of first arm 3. A stop 13 is provided on the first arm 3 to limit angular movement of the first arm 3 towards the second arm 4 and catch 6. Minimal weakening of the fitting after repeated use is achieved by use of the pivot and stop. <IMAGE>
Patent GB-2200841-A (GB)
Title: Improvements in umbrellas
Inventor: CHEN CHAU-CHIN
IPC: A45B25/16
Filed: 1987-02-12
Abstract: An umbrella automatic opening device comprising an upper tubular slider 2, lower tubular slider 4 and a spring 3 which are mounted along the central rod 5 of the umbrella, is characterised in that the upper slider has a plurality of axially disposed ribs 25 on its inner wall for locating the upper end of the spring 3. The ribs allow a shorter length spring to be used and increase the surface area of the upper slider in contact with the central rod 5, thus decreasing the fictional resistance experienced when opening the umbrella. <IMAGE>
Patent GB-2192702-A (GB)
Title: Liquid nitrogen distribution
Inventor: MURPHY JOHN C
IPC: F17C13/00
Filed: 1987-06-01
Abstract: Apparatus for providing a simulated space environment for the testing of articles under low temperature conditions includes vacuum chamber and thermal simulation heat exchanger shrouds contained within the vacuum chamber. The shrouds comprise several cylindrical zones with a top and bottoms envelope providing an optically dense envelope surrounding an article to be tested. <IMAGE>
Patent GB-2206149-A (GB)
Title: Encircling boathook
Inventor: SHEPHERDSON MICHAEL
IPC: B63B21/54
Filed: 1987-06-19
Abstract: A boathook which can be used to pass through a closed ring. It has a slide, held loosely in a body with a handle 5 and the slide has a large deep slot 7 on the same side as that by which the slide is attached to the body. In use, the slide passes into the closed ring and the slot is hooked around the bar forming the ring. The body of the boathook slides past the outside of the ring, thereby allowing the sliding part to pass right through the ring, without losing its attachment to the body of the boathook. A cord 3 is attached to the slide at 4 and the slide takes this right through the ring. <IMAGE>
Patent GB-2192535-A (GB)
Title: Lifting seats
Inventor: JONES EIFION REES
IPC: A61G5/14
Filed: 1987-06-29
Abstract: A lifting seat device having a lifting arm (36) coupled to or adapted to be coupled to a seat member (56) and a mechanism for raising the arm to assist in raising the seat member (56), the mechanism comprising a compression spring (50) enclosed within a housing (22) and whose compression is arranged to be increased upon the lifting arm (36) being angularly displaced as a result of a user sitting on said seat member (56), there being means (42,44,48) enabling the spring (50) to be adjustably pre-stressed to enable the load/displacement characteristics of the lifting arm (36) to be adjusted and preselected. The lifting arm can be selectively separable from the mechanism so that when the lifting arm is removed from or is repositioned in the mechanism, the seat can be used in a conventional, non-lifting mode. A latch mechanism for locking the lifting arm in its depressed position may be provided. <IMAGE>
Patent GB-2197191-A (GB)
Title: Desks
Inventor: SAYERS ALAN MALCOLM
IPC: A47F9/00
Filed: 1987-10-06
Abstract: The top 10 of a desk has a principal part 12 bounded by a fascia 16 at the front, and an extension part 18 not so bounded, the fascia extending vertically at least 10cm above the desk top and the lateral extent of the extension part being at least 15cm. Thus, visibility of the principal part from the front is obscured or impeded, leaving the extension part readily accessible from the front. The fascia can have a downward skirt 28 extending close to floor level. The fascia can be surmounted by a rearwardly extending ledge 30 (horizontal or canted up or down). The desk front may be curved, with the curvature 20 of the principal part different from the curvature 22 of the extension part. The principal part 12 and the extension part 18 may form a continuous surface or they may be stepped. <IMAGE>
Patent GB-2217594-A (GB)
Title: Preparing stabilized suspensions of fresh plants for use as pharmaceuticals, cosmetics or food
Inventor: JEAN DANIEL
IPC: A23L19/00
Filed: 1988-03-31
Abstract: A method is provided for preparing stabilized suspensions of fresh plants by vigorously drying plant material not more than 24 hours after harvesting, crushing dry at below -30 DEG  C to a particle size of about 1000 mu m, colloidal crushing or micronisation in a water-miscible solvent at below -5 DEG  C to a particle size of 100-500 mu m and homogenization and packaging.
Patent GB-2223717-A (GB)
Title: A pushchair provided with means to facilitate the negotiation of obstacles
Inventor: POWELL SIMON COLIN
IPC: B62B9/02
Filed: 1988-07-20
Abstract: A foldable pushchair has an extra pair of wheels between the front and rear wheels, the extra pair of wheels being pivotable into contact with the ground to aid climbing kerbs. The child sits in a removable pad 6 which can also be used as a car seat, feeding seat or as part of a baby bouncer. <IMAGE>
Patent GB-2209322-A (GB)
Title: Folding boom
Inventor: SESSIN VICTOR CYRIL
IPC: B66C23/52
Filed: 1988-09-01
Abstract: A folding boom comprises a first section (35) adapted for connection to a supporting structure (32) and a second section (36) adapted for the reception of a tip mechanism. The first and second sections are pivotally connected to one another and comprise bearings (41, 42) above the pivot for a boom hoist rope (39), so that in use the first and second sections form a rigid linear structure and at rest the second section pivots away from the first to form an angular structure. The boom is particularly suitable for use on a pedestal crane on an offshore platform or similar structure where it releases space for other equipment. The tip mechanism may be a hoisting pulley or a flare tip. <IMAGE>
Patent GB-2231411-A (GB)
Title: Anamorphic camera with normal aspect ratio image take off
Inventor: CAMPBELL ROBERT
IPC: G03B13/12
Filed: 1989-02-08
Abstract: A camera for anamorphic photography provides an anamorphotic correction system (22a 22b 24) in a video and viewfinder take-off housing e.g. directly above a ground glass 8 and reflex mirror shutter (5, Fig. 3). This correction system allows a normal aspect ratio image to be provided at any viewfinder that may be connected to the viewfinder take-off. <IMAGE>
Patent GB-2228755-A (GB)
Title: Mining machine with roof support apparatus
Inventor: ETHERINGTON MICHAEL
IPC: E21D20/00
Filed: 1989-03-03
Abstract: A continuous mining machine consists of a mobile frame (13) and a forward sub-frame (12) moveable relative thereto. Pivotally mounted on the sub-frame (12) is a jib (15) which carries a horizontal cutter (14, 16, 17) extending across the full width of the machine. The machine also includes a roof support installer (11) and a conveyor (36) for removing mined material to the rear of machine. Preferably a floor-plate is provided on the sub-frame. The machine is operated by sumping the cutter into the mine face at floor level and raising the jib relative to the sub-frame until it reaches roof level. Reaction forces from this cutting operation act downwards on the sub-frame, preferably through the optional floor-plate, and help to stabilise the machine, enabling simultaneous installation of roof bolts or other supports. <IMAGE>
Patent GB-2216750-A (GB)
Title: Transmitting multi-color image signals for reproduction
Inventor: MIZUNO SHUJIRO
IPC: H04N1/64
Filed: 1989-03-10
Abstract: A transmitter scans each line Fig 15(1) of a subject copy sheet carrying an original image having at least two colors e.g. black and red, other than a background color e.g. white of the copy sheet, thereby preparing sets of run-length code data a and b corresponding to the colors in the original image, and colour discrimination code data e indicative of which colors appear in each line of the copy sheet. The sets of run-length code data are converted if necessary into image signals c and d corresponding to the at least two colors. The transmitter transmits the color discrimination code data, and only each of the sets of run-length code data which are necessary to reproduce each line of the copy sheet. The receiver is adapted to reproduce each line of the subject copy sheet, based on the color discrimination code data e and the set or sets of run- length code data f and g which are received from the transmitter. 
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Patent GB-2218208-A (GB)
Title: Detecting and controlling the rotational speed of a pneumatically driven spindle
Inventor: YAMADA AKIO
IPC: B23Q17/10
Filed: 1989-03-20
Abstract: A rotational speed control system for a pneumatic turbine driven spindle used in a machine tool, comprises a spindle 2 possessing a male-threaded part, an air turbine 5 mounted on the spindle by a nut 10 with a convexo-concave portion being formed in one axial face thereof and a casing 1 accommodating the spindle. An electromagnetic sensor, located axially of the spindle and nut 10, senses rotation speed of the spindle from the portions formed in the end of the nut. Control means comparing the sensor-detected rotational speed with a predetermined rotational speed and for adjusting an air-supply valve in accordance with the difference between two rotational speeds, so as to reduce the difference therebetween. The control means may also close the valve if the rotation speed detected is zero. …<IMAGE>…
Patent GB-2225483-A (GB)
Title: Pre-ionization in electrical discharge apparatus
Inventor: SCHWARZENBERGER PAUL MICHAEL
IPC: H01S3/0971
Filed: 1989-11-13
Abstract: An electrical discharge apparatus (e.g laser apparatus) comprising first and second electrodes 1a, b for passing an electrical discharge through a gas in a discharge space 3 and pre-ionisation means 5a, b electrically coupled to the second electrode 1b such that, on application of a discharge potential between electrodes 1a, b, a current flows in the pre-ionisation means and pre-ionisation of the gas occurs, pre-ionisation means 5a, b comprising first and second rods 7a, b of electrically conductive material surrounded by respective first and second tubes 9a, b of intermediate resistivity material. Materials are exemplified. <IMAGE>