baber/WOPTO huggingface dataset:
Patent GB-1256108-A (GB)
Title: Fabricating semiconductor devices
IPC: C30B19/08
Filed: 1969-10-31
Abstract: 1,256,108. Zone melting. R.C.A. CORPORATION. 31 Oct., 1969 [8 Nov., 1968], No. 53514/69. Heading B1S. [Also in Divisions C4 and H1] A method of fabricating a semiconductor device having a psi junction within an epitaxial layer of a mixed composition semiconductor material having the formula B a Al i ,GaJn a N e P f  AS g Sb h  wherein each of a, b, c, d, e, f, g, and h range from 0 to 1 and a+b+c+d=1 and e+f+g+h=1 comprises preheating a semiconductor substrate body 10, preparing a charge 13 of 'the mixed composition semiconductor material together with a solvent selected from the group of materials which are electrically neutral with respect to the semi-conductor materials and an amphoteric conductivity modifier, then separately preheating the charge in a boat 11 to a temperature above its melting point but below the melting point of the substrate, flooding an exposed surface 12 of the heated substrate with the molten charge and cooling the molten charge and the substrate body so that a first portion of the charge precipitates and deposits on the exposed surface of the substrate as a first epitaxial layer which the amphoteric conductivity modifier causes to be of one conductivity type, and continuing to cool the charge and substrate so that a second epitaxial layer is deposited which the amphoteric conductivity .modifier causes to be of the other conductivity type. The charge remaining after the epitaxial layers have been grown as required is decanted. The device thus formed is then lapped or etched, provided with electrodes of tin, nickel and gold layers, and encapsulated.
Patent GB-1376729-A (GB)
Title: Tool for mechanically and electrochemically machining the surface of metallic workpieces
IPC: B23H5/06
Filed: 1971-11-18
Abstract: 1376729 Electrochemical and mechanical machining MASCHINENFABRIK GEHRING KG 18 Nov 1971 [26 Nov 1970] 53554/71 Heading B3D [Also in Division C7] A machining tool 1 has a cylindrical body and tool elements 16 for mechanically machining, tool elements 18 for electrochemically machining a metallic workpiece and a feeding device for radially moving the tool elements. The tool is particularly suitable for reaming bore holes in workpieces. The rear end is provided with a clamping cone 2 for attachment to a machine spindle. The central section 8 has eight axial slots 9, 10 extending to a cylindrical bore 13. Strips 14, 15 fit in the slots and are provided with honing stones 16 and cathode segments 18 respectively. Spacers 21 and 23 separate these working surfaces and maintain a working gap between cathode segments 18 and the workpiece. Electric current is carried to the cathode segments 18 from the tool body via a shoe 64 and flexible copper wires 63. An actuating bar 29 having cones 31 controls the radial displacement of the honing stones 16. When the bar 29 is moved towards the free end of the tool the cones 31 press outwardly against strips 14 and so move the honing stones 16. The displacement is limited by annular springs 26. Within bar 29 is a further actuating bar 37 having cones 38 which independently control the displacement of cathode segments 18 via strips 15. Bars 29 and 37 are connected by means of a clutch 28 so that as bar 29 is moved towards the free end.the movement is gradually taken up by bar 37. In the clutch, bar 29 engages a sleeve 45 supported on a spiral spring 53. Bar 37 passes through a spindle 50 attached to the sleeve 45. A rubber friction sleeve 47 is provided between the sleeve 45 and the spindle 50 so that the friction between bar 29 and bar 37 increases as bar 29 is moved. The spindle 50 may be screwed further into the sleeve 45 so that the point at which bar 37 takes up the motion of bar 29 may be made sooner. The outer surfaces of the tool are insulated from the electrolyte by plastics sleeves 54, segments 57 and insulating cap 60.
Patent GB-1440560-A (GB)
Title: Rocket motors
IPC: F42B10/30
Filed: 1967-11-27
Abstract: 1440560 Rocket motors IMPERIAL METAL INDUSTRIES (KYNOCH) Ltd 14 Nov 1968 [27 Nov 1967] 53848/67 Heading F3A A rocket motor comprises an annular nozzle 43 concentric with the longitudinal axis X-X of the motor and at least two equiangularly spaced spin-inducing nozzles 20 spaced from the longitudinal axis and inclined to a radial plane of the motor so that propellant gases from a common combustion chamber are directed through the annular nozzle 43 to impart an axial thrust to the motor, and through the nozzles 20 to impart spin to the motor. In the embodiment illustrated, a circular plug 6 is releasably secured to a longitudinally extending central support 1 by means of a bolt 16. Four spin-inducing nozzles 20 are suitably dimensioned to be a press fit in holes 14 in the plug 6. A spider member 25 secured to the plug 6 is provided on its forward face with four equi-angularly spaced radial slots 26 and a flange 30 on the forward end of the central support 1 is provided on its rearward face with four equi-angularly spaced radial slots 37 in alignment with the slots 26. Four rectangular plates 38 each carrying cordite charges 33 are fitted radially into the motor by sliding the ends of the plates along the slots 26, 37. The radially inner edges of the plates are located in grooves 39 in the central support 1. An annular recess 31 on the rearward face of the flange 30 accommodates an igniter 32 comprising magnesium based ignition material and a fuse for ignition of the cordite charges 33. Four apertures 27 extend through the spider member 25 intermediate the slots 26, each aperture 27 being in axial alignment with a hole 15 in the plug 6 so that pyrotechnic flares 28 may be fitted in the holes 15 to extend through the spider inwardly along the motor. The periphery of flange 30 has an external screw-threaded portion 40 for engagement with an internal screw threaded portion 41 of a tubular casing 42 which extends rearwardly over the motor to the plug 6. The rearward end of the casing 41 is radially spaced from the contoured periphery of the plug 6 to define the annular nozzle 43. A typical use of the motor is for the first stage propulsion unit of a missile. The particular embodiment described above is intended for applications in which the motor may be reused by unscrewing the casing 42, removing the plates 38 which carried the spent cordite charges, fitting a new igniter 32, and reloading new flares 28 and charges 33.
Patent GB-1419119-A (GB)
Title: Magneto-elastic device
IPC: H01L41/12
Filed: 1972-11-22
Abstract: 1419119 Electro-acoustic devices INTERNATIONAL BUSINESS MACHINES CORP 22 Nov 1972 [30 Dec 1971] 54045/72 Heading H3U [Also in Divisions G1 and H1] Devices incorporate a vibrating or acoustic pulse supporting member including amorphous magnetic material whose Young's modulus E changes in the presence of a magnetic field H. The resonant frequency of a resonator can thus be changed by means of the applied magnetic field, or the delay time of a delay line can be varied. Detection of the resonant frequencies of a pair of perpendicular reeds in an unknown magnetic field enable its magnitude and direction to be monitored.  Resonators, Fig. 2A; Figs. 2B-2D (not shown).-Reed 22A, whose Young's modulus varies with applied field is supported in evacuated chamber 28. Oscillation is initiated by oscillator 40, transformer coupled to electrostatic transducer 30, 32, battery 60 providing the bias, and maintained, with switch 52 connecting the winding 54 to detector 42, via the latter, electrodes 36, 38 detecting the actual resonant frequency. Helmholz coils 70, 72 provide the magnetic field, whose magnitude and hence the resonant frequency is set by variable resistor 76. Chamber 28 is maintained at constant temperature by bifilar nichrome winding 85. The magnetic field may alternatively be supplied by a coil (90) adjacent part of the reed and internal to the chamber, (Fig. 2B), or the reed itself, with an internal longitudinal slot may itself carry the magnetizing current, (Fig. 2C), or the reed may incorporate a body (92), sized to tune a particular vibrating mode and providing the required variation of Young's modulus, and encompassed by a coil (90), Fig. 2D. Detection of magnitude and direction of magnetic field, Fig. 6.-A pair of resonating reeds, perpendicular and coplanar, are each supported on a common block 120, the assembly being movable on ball 126 with respect to the unknown field H, α. Each reed is excited and maintained as in Fig. 2A, and correlation of the outputs from the respective detectors defines the magnitude and direction of the field. Delay line, Fig. 3.-The delay time of pulse 110 is set by variable resistor 112, the axial magnetic field varying the Young's modulus of delay material 102. Materials, the vibrating member, or body (92, Fig. 2D), comprises amorphous Fe 75 P 15 O 10 , made by splat cooling, characteristics of Fig. 10 (not shown), whose sensitivity is increased by annealing, Fig. 9 (not shown), further enhanced by annealing in a longitudinal or transverse saturating magnetic field, Fig. 11 (not shown), while the material cools through the Curie temperature. Properties of known crystalline materials, nickel, or the alloys Fe, 30% Ni; characteristic (A, Fig. 8) Fe, 28% Co (B); Fe, 2À5% Si (D), are also discussed. The heater 85 and coils 70, 72 of Fig. 2A may be used for such annealing. The effect of reed width (d 1 , d 2 ) Figs. 5A, 5B (not shown) on performance is discussed, smaller widths leading to greater usable frequency range. A polymer matrix containing particulates may also be used.
Patent GB-1429815-A (GB)
Title: Cold storage or transport container
IPC: F25D3/12
Filed: 1973-11-22
Abstract: 1429815 Containers BURGER EISENWERKE AG 22 Nov 1973 [31 Jan 1973] 54359/73 Heading F4H A cold storage or transport container comprises within an outer casing 11 having a cover 12, a cooling compartment 14 adapted to contain solid CO 2 , and a closed storage compartment 17 spaced from the walls of the outer casing and from a partition 16 supporting the CO 2 . With solid CO 2  disposed within compartment 14, cold gas passes through apertures in the partition 16 and via passageways 23, 24 to an adjustable outlet exhaust 10a. The storage chamber 17 which has at least one door and shelves 22, may also include pressure compensating apertures opening directly into the atmosphere. The passageway 23 may extend around three sides of the container.
Patent GB-1180746-A (GB)
Title: Improvements relating to Spray Lubricating Apparatus
Inventor: JAMES ALEC PATRICK
IPC: B05B12/16
Filed: 1966-12-06
Abstract: 1,180,746. Spray lubricating apparatus. JACO ENG. DEVELOPMENTS CO. Ltd. 13 Feb., 1968 [6 Dec., 1966], No. 54512/66. Heading B2F. A spray lubricating apparatus for use in die forming operations comprises one or more fixed spraying heads each of which is provided with a guard visor movable between a position shielding the heads from spatter impingement caused by spatter from the dies and a second position in which the visors are clear of the heads to permit spraying. The visor is moved by air pressure wherein the same pressure is sufficient to spray the lubricant, the visor being gravity- or spring- returned to its shielding position. The apparatus is illustrated in Fig. 1 wherein a distribution block 10 is provided with a rotatable turret 11 having mounted thereon the nozzles 12, 13 such that by rotation of the turret any one nozzle may be brought into operation. The visor 55 is shown in its second (non- shielding) position. The block is mounted on a stem 17 which is provided with a laterally extending lever 24 coupling with to a reciprocating mechanism thus permitting angular movement of the block, turret and nozzles. A pressurised air supply (not shown) is supplied to the block 10 and simultaneously raises the visor and atomises the lubricant which is sprayed from the nozzle.
Patent GB-1274678-A (GB)
Title: Hop extracts
Inventor: MITCHELL WILLIAM
IPC: C12C3/00
Filed: 1968-11-19
Abstract: 1,274,678. Xanthohumols. BUSH BOAKE ALLEN Ltd. 13 Nov., 1969 [19 Nov., 1968], No. 54875/68. Heading C2C. [Also in Division C6] In preparing bittering adjuncts for beer involving (a) preparing a solvent extract of hops containing the hop resins and oils, (b) separating the extract into an α-acid-containing fraction, which is substantially free from #-acids and hop oils, and a #-acid- and oil-containing fraction which is substantially free from α-acids, and (c) isomerizing the α-acid-containing fraction, xanthohumols are separated from the solvent extract of hops prepared in step (a) before proceeding to step (b). Thus, a benzene extract of hops is taken up in petroleum ether and the xanthohumols are extracted with 70-80% v./v. of aqueous methanol at a pH insufficiently high to extract the α-acids also. The methanolic extract yields a resinous residue rich in xanthohumols. It is stated that xanthohumols and isoxanthohumols, being insoluble in both hydrocarbon and aqueous alkali would entrain a significant proportion of the valuable α-acids during the solvent extraction process. Part of the xanthohumol then remains in the extract and tends to cause cloudiness on addition to beer. The isomerized extract resulting from step (c) typically contains 10-70% by weight of iso-α-acids as their salts, less than 0À2% of xanthohumols and 20-85% of water. Specifications 1,161,787 and 187,789 are referred to.
Patent GB-1223767-A (GB)
Title: Method of and apparatus for heat treating a woven synthetic fabric
Inventor: HERKENBERG WOLFGANG
IPC: D06C29/00
Filed: 1968-11-19
Abstract: 1,223,767. Finishing fabrics in looms. THIOKOL CHEMICAL CORP. 19 Nov., 1968 [18 Jan., 1968], No. 54899/68. Headings DIE and D1S. [Also in Divisions B8 and F2] Fabric 1 woven from synthetic yarns is led direct from the loom over a roller 9 under a tension which is lower than that encountered during weaving. The roller has a prickly surface which prevents widthwise shrinkage whilst the fabric is heated almost to its softening temperature by radiant heaters 10. Hot water is circulated through the roller 9 to keep it at a constant temperature. The heaters 10 are on for 15 seconds and off for 15 seconds, and are swung up to the position shown in broken lines by a pneumatic cylinder 11 when the loom stops. The fabric is wound on to a roll under a higher tension. For a fabric woven from polypropylene ribbons, monofilaments or multifilament yarns, the hot water is at 80-180F and the fabric is heated to 270- 350F. Reference has been directed by the Comptroller to Specification 1,006,944.
Patent GB-1369074-A (GB)
Title: Cylinder and piston assembly on a rotatable shaft
IPC: F16H63/06
Filed: 1971-11-26
Abstract: 1369074 Cylinder covers; expanding wheel gear PIV ANTRIEB WERNER REIMERS KG 26 Nov 1971 [27 Nov 1970] 54964/71 Headings F2T and F2D A piston and cylinder assembly on a rotatable shaft for an hydraulically-controlled infinitely variable core pulley transmission comprises a cylinder having a barrel 18 and an end wall 17 connected to each other yieldably and fluidtightly to permit the barrel to tilt relative to the end wall and effect a self-centring adjustment relative to the piston packing 21 in response to a bending deflection of the shaft 3 when rotating under load. As shown in Fig. 2, an endless belt 9 passes over cone pulleydiscs 5, 6, the latter being axially-displaceable on the shaft 3 to vary the transmission ratio. The two pulley-discs are keyed together by a sleeve 15 and are rotatably mounted on the shaft 3 by roller bearings 16. The cylinder barrel 18 moves with the pulley-disc 7 and is yieldably-connected to the cylinder end wall 17 by a sealing ring 24. The piston 14 is keyed to the rotatable shaft and serves as a cam sleeve which co-operates with a further cam sleeve 12 through rollers 13 to provide a mechanical pressure acting on the pulley-disc 7, the cam sleeve 12 being keyed to the pulley-disc for rotation therewith. Under idling conditions, a spring 19 keeps the belt 9 under a predetermined pressure. The pressure applied by the cam sleeves is augmented by hydraulic fluid supplied through a bore 20 in the shaft and, by variation of the hydraulic pressure, the transmission ratio may be adjusted. In a modification, Fig. 4, the cylinder end wall is keyed to the pulley-disc 7 and is yieldably-connected to the cylinder barrel 18 by sealing ring 24 and two or more spring support and centring tongues 27. In a further modification, Fig. 5, the cylinder end wall 17 is integral with the pulley-disc and the cylinder barrel 18 is yieldably-connected by sealing and centring rings 24, 34 and between the spring 19 and the cylinder end wall there is provided a support ring 31.
Patent GB-1299410-A (GB)
Title: Fastener for insertion into a sandwich panel
IPC: F16B5/01
Filed: 1971-11-26
Abstract: 1299410 Rivets SHUR-LOK CORP 26 Nov 1971 [27 Nov 1970] 55060/71 Heading F2H  A rivet for use in a hole 12 through a sandwich panel having a core 11 between skins 9, 10 comprises two tubular members A, B with integral heads 15, 25, the member A having at the end remote from its head a counterbore 18 defining a skirt 17 having a wall thickness substantially less than that of the main body 16 and terminating in a tapered annular lip 19 surrounding an outwardly flared frusto-conical throat 20, and the member B having at the end remote from its head 25 an external bevel 27 adapted to enter the throat 20 of member A and engage the start of the counterbore 18, so that as the member B is forced into the counterbore the skirt 17 is expanded beyond its elastic limit to plastically deform the skirt 17, the lip 19 being turned inwards by pivotal movement about the junction 21 between the throat 20 and the counterbore 18. There is a small clearance between the rivet and the wall of the hole 12, the tip of the lip 19 being wedged in the hole in skin 10 (Fig. 3, not shown) or abutting the skin 10 (Fig. 4, not shown) to clamp the skin 10 against the head 25. The rivet may be of metal, e.g. aluminium, or plastics, e.g. nylon, acrylic resin, polycarbonate, or polypropylene. The wall thickness of member B is at least 1À25 times, and preferably 1À8 times, the wall thickness of the skirt 17.
Patent GB-1419808-A (GB)
Title: Device for indicating used parking time
IPC: G07C1/30
Filed: 1973-11-28
Abstract: 1419808 Sandglasses BRODRENE A S L A A/S 28 Nov 1973 [28 Nov 1972] 55231/73 Heading G3T [Also in Division G4] A parking time indicator comprises an hour glass, the constriction 4 between upper and lower chambers 2 and 3 of which is initially blocked by means which are manually operable to permit flow through the constriction. The constriction is preferably not such as to facilitate reverse flow of the fluent material 5, e.g. sand, from the lower chamber 3 to the upper chamber 2. The blocking means may comprise either a thin film separating the filled upper chamber from the empty lower chamber and breakable by flexing the region joining the two chambers, or a thread 6, initially located within the constriction 4, but withdrawable to the position shown, wherein stop 7 engages seal 8 and hook 9 may be engaged with, for example, the vehicle's rear view mirror. Graduations 5 provide an indication of elapsed parking time. The thread 6 may be withdrawable from constriction 4 through the lower wall of chamber 3, in which case a suction cap or adhesive tape may be provided instead of hook 9. Tubular constriction 4 may be helical or otherwise curved.
Patent GB-1503903-A (GB)
Title: Solar energy conversion device
IPC: F24S10/95
Filed: 1973-11-29
Abstract: 1503903 Solar collectors PA MANAGEMENT CONSULTANTS Ltd 28 Feb 1975 [29 Nov 1973] 55423/73 Heading F4U A collector C for radiant energy, e.g. solar energy, forms a part of a heat pipe. The heat pipe comprises the collector C and a small-bore tube T, fluid condensed at the emitter end E of the tube being returned by gravity or through a wick structure to the collector. The lower surface of the collector is treated so as to exhibit black-body characteristics, and the upper surface is formed of a material opaque to radiation emitted from the lower surface. To reduce convection losses, the upper surface of the collector is separated from the outside air by an evacuated glass envelope. The external surfaces of the sides and bottom of the collector and the tube are covered by thermal insulation F.
Patent GB-1397218-A (GB)
Title: Phtographic light-sensitive materials
IPC: C09K3/16
Filed: 1973-11-29
Abstract: 1397218 Photographic antistatic agents FUJI PHOTO FILM CO LTD 29 Nov 1973 [29 Nov 1972] 55536/73 Heading G2C 'Photographic silver halide materials contain as an antistatic agent in any layer a polymer consisting essentially of recurring units of the formula:- where R<SP>1</SP> is hydrogen or alkyl e.g. nonyl, R<SP>2</SP> is alkyl e.g. octyl, nonyl or dodecyl, R<SP>3</SP> is hydrogen or methyl, M is hydrogen or a cation e.g. Na or K, x has a value from 0 to 50, y is 0, 2 or 3 and z is 0 or 1. The polymer preferably has a value of x other than zero e.g. 2-30 and may be present in a surface or internal layer or coated on to the surface of the materials. When the polymer is present in a backing layer, excessive slip of the material is also reduced.
Patent GB-1485527-A (GB)
Title: Disinfecting cabinets
IPC: A61L2/22
Filed: 1974-12-23
Abstract: 1485527 Disinfecting cabinet DRAGERWERK AG 23 Dec 1974 [21 Dec 1973] 55648/74 Heading A5G A disinfecting cabinet comprises (i) a front unit 1 incorporating a front outside wall 4a, a front door 4 and various parts of disinfecting apparatus, and (ii) at least one additional unit 2 rearward of the front unit, the most rearward unit having a rear wall 3, the units being assembled together to form a substantially closed disinfecting chamber within the cabinet, and each additional unit incorporating various parts of disinfecting apparatus, the said disinfecting apparatus comprising gas circulating means for circulating gas through the chamber, e.g. device 9, and disinfectant adding means for adding a chemically acting disinfectant to the circulating gas, e.g. evaporator 14, dosaging device 6 and supply container 7. The rear wall 3 may also contain a door (not shown). The front unit 1 may contain control devices of the disinfecting apparatus, and other apparatus in the cabinet includes a gas scavenging device 10 -with inlet 12 and outlet 11 and means 18 for electrical and pneumatic connection of medical and respiratory articles to be disinfected.
Patent GB-1383789-A (GB)
Title: Circuit protector
IPC: H05B6/68
Filed: 1972-12-05
Abstract: 1383789 Protective arrangements AMANA REFRIGERATION Inc 5 Dec 1972 [30 March 1972] 56109/72 Heading H2K [Also in Division H1] An arrangement for protecting a microwave heating apparatus 10 energized by a microwave energy generator 28 supplied by a rectifying circuit from a high voltage transformer 20, comprises a circuit protector having a resistor 52 in the secondary circuit controlling a thermallyactuated de-energizing device 62 in the primary circuit. As shown, the rectifying circuit is a voltage doubler circuit formed by diodes 40, 42 and capacitors 44, 46. The resistor 52 is wirewound and in thermal contact with, but electrically isolated from, the thermally actuated device 62. This device has contacts normally maintained closed against spring bias by a fusible mass (see Division H1).