baber/WOPTO huggingface dataset:
Patent GB-1058702-A (GB)
Title: Semiconductor device
IPC: H01L21/22
Filed: 1964-01-27
Abstract: 1,058,702. Transistors. NIPPON ELECTRIC CO. Ltd. Jan. 27, 1964 [Feb. 23, 1963], No. 3437/64. Heading H1K. A transistor is produced by epitaxial growth of semi-conductor material of one conductivity type on to a wafer of the opposite conductivity type thus forming one PN junction, and then by diffusion of impurity into the epitaxially grown region forming a second PN junction. Starting with a wafer 1 of P-type silicon, an N-type layer 2 of lower conductivity than the wafer is deposited by vapour phase deposition of silicon from SiCl 4  in a hydrogen atmosphere at 1220‹ C. Under these conditions impurities migrate from the wafer 1 into the layer 2 during growth so that the PN junction is formed at 3 within the deposited layer. The free surface of this layer is then oxidized, and, by means of a photo-resist masking and chromic acid etching technique, all but a small central region 4 (Fig. 2(V), not shown) of the oxide is removed. The exposed N region is then diffusively doped with boron to form an annular P-type region 5. By re-oxidizing the free surface and making a hole 4<SP>11</SP> (Fig. 2(VII), not shown) in the original oxide region 4, it is possible to diffuse further N-type impurity-e.g. phosphorus-into the N region to produce a more conductive portion 2<SP>11</SP> thereof for contact with an electrode 9. This electrode and an annular electrode 8 for the P region 5 are produced by vacuum deposition of aluminium vapour through gaps etched in the oxide coating 7. The resulting structure constitutes a transistor of which the N-region 4 is the base, P-region 5 the emitter and P- region 1 the collector. The base may be provided with a thermo-compressively bonded electrode and the device encapsulated. The areas of the two PN junctions are very nearly equal, and the impurity concentration can be controlled so as to make the two P-regions of like conductivity and of like impurity concentration gradient at their respective junctions with the N-region, so that the transistor is substantially symmetrical.
Patent GB-875383-A (GB)
Title: Improvements in axial flow fans
Inventor: LEVACIC IVAN
IPC: F04D29/36
Filed: 1957-01-31
Abstract: 875,383. Axial-flow fans. BESTWOOD CO. Ltd. April 29, 1958 [Jan. 31, 1957], No. 3440/57. Class 110 (1). An axial flow fan rotor comprises a hub having blade root seatings, and radial blades adjustably clamped by their root portions in the seatings, the seatings and at least the root portions of the blades having matching constant transverse curvature, whereby the blades may be adjusted laterally to vary their pitch angle. The main body of the fan rotor hub shown, is mainly of fabricated sheet metal construction including arcuate box construction peripheral segments 17, each with a circumferential wall 17a, end walls 17d, 17e and arcuate sides 17b, 17c of which adjacent opposite pairs form, with clamping plates 23, 27, arcuate slots receiving the blade roots 20. Elongated slots 25 in the blade root permit adjustment of the blade pitch angle. The clamping plates 23, 27 may be welded or riveted to the segment end walls 17d, 17e respectively, or formed integrally with the side walls 17b, 17c. The blades mav be twisted beyond their root portions. The blades may each be formed of a curved sheet of metal, folded over an insert at the leading edge to provide a double skin over the front half of the blade width. Hubs of cylindrical, disc or drum form may be cast or forged with integral arcuate blade seatings. In the case of a disctype hub, a single clamping plate is used for each blade and may project radially outwardly beyond the hub disc to buttress the blade. In another form, the hub is split and consists of two axially-separable discs between the opposed respectively concavely and convexly lobed faces of which the blade roots are clamped.
Patent GB-251592-A (GB)
Title: Improvements in aircraft
IPC: B64C23/00
Filed: 1926-02-08
Abstract: 251,592. Watson, F. L. April 28, 1925, [Convention date]. Aeroplanes; helicopters; propelling; steering; planes, construction of.-A machine, adapted to fly vertically or horizontally, has a tractor propeller adapted to be swung from a horizontal to a vertical position, supporting planes provided with shutters on transverse axes which can be set in a vertical position during vertical flight, a lifting propeller at the tail. and means for retarding forward flight. The shaft 34 of the tractor 36 swings in a slot in the fuselage when moved by a quadrant 29 and worm 30. The shaft 34 is driven by bevel gear from the common transverse shaft of two laterally placed engines 24. The engine shaft is also connected by bevel gear and a clutch 40 to a longitudinal shaft 39 which drives through bevel gear a propeller 46 for supporting the tail during vertical flight. A brake 47 on the shaft of the propeller 46 becomes operative as the clutch 40 is released. The propeller shaft 34 is held at either end of the slot in the fuselage by catches operated from a lever 54. The planes 14, 15 have series of transverse shutters 17, Fig. 3, on shafts, moved by pinions 18 which engage racks 19 operated by levers 20 and controlled by a lever 21, Fig. 2. Stopping way.-To check forward motion a roller curtain 50 is pulled down by a cord 51 controlled by a hand wheel 52 to close the gap between the planes.
Patent GB-1209452-A (GB)
Title: Improvements in or relating to tape cable connectors
Inventor: COLE JAMES EDWARD GEORGE
IPC: H01R12/67
Filed: 1967-01-24
Abstract: 1,209,452. Electric couplings. McMURDO INSTRUMENT CO. Ltd. 24 Jan., 1968 [24 Jan., 1967], No. 3546/67. Heading H2E. An electrical connector for a tape cable 1 comprises a body member 8 containing a contact 12 having tooth portions 13, 14 which pierce cable insulation 3 and engage a conductor 2 of the tape cable 1 when the member 8 cooperates with a base 4, a projection 6 on which enters a recess in member 8 thereby flexing the cable between abutments 10 on the member 8. The contact 12 is located in a slot 11 extending to another slot 16 through which a terminal portion 15 of the contact 12 protrudes and a lip 17 on the terminal 15 engages an outer surface of the member 8 to prevent inadvertent removal of the contact 12. A single tooth or a plurality of teeth may be provided on either or both portions 13, 14. A resilient lining 20 is provided in the slot 11 between the member 8 and the contact 12. Similar linings 18, 19 may also be provided on the projection 6 and the base 4 to relieve stresses in the tape cable. In an alternative embodiment (Figs. 3, 4, not shown) the central projection is replaced by a cylinder, which is journalled between curved recesses in the body member and the base and has a diametral slot which receives the central portion of the tape cable; on rotating the cylinder the tape cable is drawn on to the tooth portions. A plurality of contacts 12 may be provided in body member 8, each engaging a different conductor 2 in the cable. The body member and the base are held together, e.g. by a screw threaded arrangement.
Patent GB-230035-A (GB)
Title: Improvements relating to manure distributing machines
IPC: A01C15/16
Filed: 1925-02-09
Abstract: 230,035. Koch, A. W., [Firm of]. March 1. 1924, [Convention date]. Manure distributors.-In a machine comprising discharge, counter, and distributing cylinders, the cylinders are arranged in such positions relatively to one another that the manure issuing from between the slowly rotating discharge and counter cylinders falls on ribs on the rapidly rotating distributing cylinder and on a trough co-operating with it.. The counter cylinder e, Fig. 1, is adjustable towards or away from the discharge cylinder b by means of a bell-conk lever f, h. It is also controlled by a spring g, and acts as a crushing roller. The distributing - cylinder k is provided with parallel, oblique, or helical ribs and is mounted at a lower level than the discharge cylinder b in an accessible position. The ribs l extend to the cylinder b and are toothed, the teeth on adjacent ribs being staggered relatively to one another. The teeth mav be twisted so as to distribute the manure over a surface wider than the machine. The trough i forms a scraper for the cylinder b and is curved about the centre of the cylinder k. It is adjustably, rigidly, or yieldingly fixed. Each of the cylinders b, c, k may consist of two or more cylinders placed end to end. The Specification as open to inspection under Sect. 91 (3) (a) describes also the modification shown in Fig. 3 (Cancelled). A wire or a narrow scraper t is arranged above the trough i, the toothed ribs l are sharpened and arranged at an angle to the radii of the cylinder k, and means are provided for shaking the trough i. A finger g rotating with the cylinder k periodically depresses a lever p urged upwards by a spring s integral with arms r which strike the trough i. The striking apparatus may be put out of action by unhooking the spring s or the lever p. The spring may be adjustable. This subject-matter does not appear in the Specification as accepted.
Patent GB-572067-A (GB)
Title: Improvements in wiping down motions for spinning mules
IPC: D01H3/00
Filed: 1944-02-26
Abstract: 572,067. Cleaning spinning mules. ATHERTON MILLS, Ltd., and HEATON, J. S. Feb. 26, 1944, No. 3609. [Class 120 (iii)] In a wiping-down motion for a spinning mule of the type in which a box A, carrying the cleaning cloth, is moved intermittently along the roller beam B by a traversing rope C, first in one direction and then in the other, motion coming from the back shaft of the mule, the box, which is slidably mounted on a bar b affixed to the beam B and extending from the headstock to the side of the mule, carries three pulleys D, D<1>, D<2>, the central pulley D being mounted in longitudinal slots a in the box so that it may move therein under the influence of the rope C until it is gripped between plate springs E, E<1> so to move the box. At the end of the intermittent motion in one direction, the box meets a stop and the rope C then pulls the pulley D beyond the apices of the springs E, E<1> so that further intermittent motion of the box will take place in the opposite direction. The spring E<1> is adjustable at e.. A further spring E<2> may be fitted. The cleaning cloth is preferably carried by hinged flaps F, spring-urged against the beam B. A cleaning cloth G for the front of the mule and valencies G<1>, G<2> for cleaning the top of the mule are carried by an inclined plate H, adjustably weighted at h<1>. Attached to the flaps F are pivoted arms carrying card clothing for cleaning the rope C, the arms carrying rollers engaging the rope.
Patent GB-1424645-A (GB)
Title: Gas detecting apparatus
IPC: G01N1/24
Filed: 1974-01-25
Abstract: 1424645 Gas detector DRAGERWERKAG 25 Jan 1974 [26 Jan 1973] 03685/74 Addition to 1401898 Heading G1B A modification of the portable gas detecting apparatus described in Specification 1401898 comprises an electric switch carried by the housing whereby the power source transmits electricity to drive the fan, an operating element of the switch being so arranged that said switch is closed by mounting the detector tube on said housing. In the arrangement shown in Fig, 2, the detector tube is positioned in housing 1 Fig, 1 (not shown) in holder 19. An operating element 22 of switch 23 projects in a depressible way into recess 21 of holder 19. Insertion of a detector tube into holder 19 will thus operate the switch to operate the miniature fan.
Patent GB-1203564-A (GB)
Title: Device for pressure measurements
IPC: G01L21/12
Filed: 1969-01-23
Abstract: 1,203,564. Measuring pressure electrically. INTERNATIONAL STANDARD ELECTRIC CORP. Jan.23, 1969 [Jan.25, 1968], No.3815/69. Heading G1N. A pressure gauge comprises a box 4, with at least one aperture 5, inside which box are two thermistors 2, 3 one either side of, and equidistant from, an electrically heated filament 1, the axes of the thermistors and the filament being parallel. A battery E1 supplies current to the thermistors which are series-connected. For use as an altimeter the gauge is disposed so that the thermistors are in a vertical plane thus a temperature difference is produced between them due to convection currents. A differential amplifier 6 measures the consequent difference in voltages dropped across the thermistors, which voltage V AB  varies as static gas pressure according to a low illustrated in Fig. 2 (not shown). An alternative embodiment includes a N. T. C. thermistor, in thermal contact with the box, connected in series with the filament so as to maintain a constant temperature difference between the box and its surroundings. The filament and thermistors may be further enclosed in a pipe 7 with forced gas cooling. Examples of parameters of the gauge for use in the pressure range 270-330 millibars are given.
Patent GB-139868-A (GB)
Title: Improvements in doors applicable for bulkheads, partitions, walls, smoke boxes and the like
IPC: F23M7/00
Filed: 1919-02-17
Abstract: 139,868. Stuart, O. Feb. 17, 1919. Bulk-head doors.-Doors for bulkheads and openings in partitions are fastened by means of wedges or cleats carried bv a sliding bar adjacent to the door opening and engaging similar wedges or cleats fixed cn the door, or vice versa. Fig. 1 shows a door provided with wedges 20 which are engaged by cleats 21 on a bar 22 sliding in guides 23 and actuated bv a cam 24 engaging a loop 26 on the lower end of the bar. The bar slides over beads 28, Fig, 2, to reduce friction. Fig. 4 shows a modification in which the sliding bar is carried by the door and has slots 30 to fit over guides 31, and slots 32 to clear the wedges 20 in closing the door. The bar is operated by a cam 24 as before. A similar form of fastening is described for a door hinged along the top side. Specification 133 778 is referred to.
Patent GB-1438077-A (GB)
Title: Gas compression apparatus
IPC: F04B39/12
Filed: 1974-01-28
Abstract: 1438077 Mounting arrangements for dynamoelectric machines SUNDSTRAND CORP 28 Jan 1974 [26 Jan 1973] 3888/74 Heading H2A A gas compression apparatus 10 comprises a support plate 15 on which is mounted both an electric motor 14 and a centrifugal compressor 18. The rotor of the electric motor is mounted in bearings on the support plate independently of the stator. A rotor shaft 32 of the motor drives the centrifugal compressor through stepgearing 90. The compressor includes a back shroud 42 machined directly on the support plate 15 and a volute 43 formed within the support plate. Above the impeller 46 is mounted an inlet nozzle 58. The support plate 15 may also include an outlet passage 62 communicating with the volute 43. The step-gearing 90 comprises a small gear 53 having thrust surfaces 55 and 56 which transfer upward unbalanced load on the impeller to main bearings 29, 30. The apparatus includes a housing 11 in two parts sandwiching the support plate 15. Sound insulating gasket material may be included in the sandwich.
Patent GB-1217343-A (GB)
Title: Thrust bearing assemblies
Inventor: BIELEC MATEUSZ KAZIMIERZ
IPC: F16C17/06
Filed: 1967-01-26
Abstract: 1,217,343. Thrust bearing. GLACIER METAL CO. Ltd. 25 Jan., 1968 [26 Jan., 1967], No. 3951/67. Heading F2A. A thrust bearing assembly comprises a support 3 carrying an annular series of thrust pads 1 which are formed and disposed so as to define a gap between the sides of adjacent pads through which liquid lubricant is forced under pressure to the bearing surfaces 2 of the pads. Lubricant is supplied to the gaps between the pads via a passage 13 through the support. The pads may be pivotally connected to the walls 5A and 5B by means of pivots 8 which permit the tilting of each pad while holding the pads in the correct position. Seals Y and Z may be provided to prevent flow of oil other than between the sides of adjacent pads, and these seals may also serve to prevent displacement of the pads in the recess.
Patent GB-1455895-A (GB)
Title: Bearing having an integral mounting flange and sealing elements
IPC: F16J15/32
Filed: 1974-01-29
Abstract: 1455895 Bearings; seals SKF INDUSTRIAL TRADING & DEVELOPMENT CO BV 29 Jan 1974 [9 Feb 1973] 04043/74 Headings F2A and F2B A rolling bearing (Fig. 1) comprises an inner ring 2 forming an integral part of a mounting flange 4, an outer ring 3, rolling elements retained in a cage 9, and a sealing element 11 of such dimensions as to allow maximum eccentric relative displacement of the rings during assembly of the bearing. The element comprises a relatively rigid portion 13 which is received in a groove in the side wall 12 of the outer ring and is retained either by its own resilience, or by adhesive, or by enclosure in a stainless steel sleeve 22 (Fig. 3). Where a sleeve is provided, it does not extend within the radially innermost limit P of the outer ring. A further sealing element 10 may be provided. The cage 9 is snapped into place over the rolling elements.
Patent GB-1056603-A (GB)
Title: Laminating process
IPC: D04H1/64
Filed: 1965-01-29
Abstract: 1,056,603. Laminates. E. I. DU PONT DE NEMOURS & CO. Jan. 29, 1965 [March 27. 1964], No. 4079/65. Heading B5N. A process for making a poromeric laminate comprises wetting a woven interlayer of fabric of yams of mixed synthetic and cotton fibres, stretching the fabric while wet at least 2% in width and drying the stretched fabric, the dried fabric having the following chracteristics; moisture content less than 3% by weight, tensile strength at least 55 x 55 pounds per inch, break elongation 20-30% x 20-30%, modulus 2,000-4,000 x 1,800-3,800 p.s.i. at 5% elongation, thickness 5 to 6 mils., smoothness factor less than 20 mils., placing the dried fabric on a porous substrate, coating the fabric with a dispersion of the polymer, the dispersion penetrating the interlayer fabric and at least a part of the thickness of the substrate, coagulating the polymer and drying the coated structure to form a laminate in which the dispersion after coagulation bonds the interlayer fabric to the substrate and forms a smooth poromeric coating on the exterior surface of the interlayer fabric sufficiently thick to render the surface pattern of the interlayer fabric invisible to the naked eye but less than 30 mils. thick. Specified synthetic fibres are polyester, acrylic and nylon fibres. Specified polymers are those disclosed in Specifications 914,711, 946,069, and 981,642, e.g. polyamides, polyesteramides, polyesters, polyurethanes alone or in admixture with polyvinyl chloride or copolymers of vinyl chloride with vinyl acetate, vinylidene chloride or diethyl maleate, cellulose esters, elastomeric polymers and copolymers of conjugated dienes, e.g. polychloroprene and copolymers of butadiene and acrylonitrile, polyureas, polyvinyl chloride, copolymers of vinyl chloride with vinyl acetate, acrylontrile, vinylidene chloride or maleic, fumaric or acrylic acid esters, polyvinyl butyral, poly-α-methyl styrene, polyvinylidene chloride, polymethyl methacrylate and copolymers of methyl methacrylate with acrylic acid, methacrylic acid, acrylic or methacrylic acid esters, vinyl acetate, acrylonitrile or styrene.
Patent GB-999928-A (GB)
Title: Sealing of hoods and the like for metallurgical furnaces
IPC: F16J15/46
Filed: 1963-01-31
Abstract: 999,928. Seals. DEMAG A.G. Jan. 31, 1963 [Feb. 1, 1962], No. 4100/63. Heading F2B. [Also in Division F4] In a sealing arrangement for closing the gap 4 between a movable hood 2 and a chimney 1 for conducting waste gases from an oxygen blast converter 3, Fig. 1, at least one chamber 5 is provided above the hood 2 and has a flexible wall 6a which acts as a sealing member upon deformation by pressure fluid supplied to the interior of the chamber. The chamber 5 is bounded by a member 6 secured to the hood and by the wall 6a which is in the form of a flexible membrane which may be protected by asbestos insulation 7 and a shield 8. The shield 8 may have sufficient elasticity or be composed of springs to move the membrane away from the surface of the chimney 1 when the pressure is released from the chamber 5 while the hood 2 is raised or lowered. The fluid in the form of a gas or a liquid, which may also act as a coolant, is supplied through a pipe 9. The circulation of the fluid in the chamber is controlled by the lifting gear for the hood so that when the gear is operated the pressure in the chamber is released. A gaseous seal may also be provided continuously, or only when the pressure is released from the chamber, by introducing nitrogen into the space 11 through a pipe 10. The hood is formed with a projection 12 to scrape deposits off the surface of the chimney 11. In Fig. 2 sealing is provided by a member 15 passing between annular chambers 17, 18 constituted by inflatable tube seals and retaining members 19. The member 15 dips into sand or liquid contained in a trough 16 and providing an additional seal. The inflatable rings and membranes may be of rubber or synthetic material. Flexible metal membranes which may be corrugated may also be used.
Patent GB-826366-A (GB)
Title: Cyclopentanopolyhydrophenanthrene compounds
IPC: C07J5/00
Filed: 1956-02-09
Abstract: The invention comprises retrocortin 21-alde-hyde compounds of the general formula <FORM:0826366/IV (b)/1> wherein R is keto or a b -hydroxy radical, and Y is a hydrogen or halo substituent), and a process for their preparation by reacting the corresponding retrocortin 21-free hydroxy compound with cupric acetate, preferably in a polar solvent, e.g. water, lower alkanols, lower dialkyl ketones, dioxan or tetrahydrofuran. A slight excess of cupric acetate (2.1 to 2.2 equivalents per mol. equivalent of the retrocortin compound) is normally employed and the reaction effected in acid media by the addition of e.g. acetic acid.  In examples: (1) retrocortin in methanol containing acetic acid is refluxed with cupric acetate hydrate, the cuprous oxide formed is separated and retrocortin 21-aldehyde isolated by addition of water and concentration of the mixture; (2) to (4), in a similar manner the following retrocortin-21-aldehydes are prepared from the corresponding 21-ol compounds 9-fluoro-, hydro-, and 9-fluoro-hydro-. The corresponding 9-chloro- and 9-chloro-hydro-retrocortin - 21 - aldehydes are also mentioned. Specifications 823,940, 826,361 and 826,364 are referred to.
Patent GB-468977-A (GB)
Title: Improvements in or relating to disinfecting devices
IPC: E03D9/03
Filed: 1936-02-11
Abstract: 468,977. Disinfecting water - waste - preventers. SELBY, H. Feb. 11, 1936, No. 4139. [Class 26] A disinfecting device for use in conjunction with cisterns comprises a reservoir a and means such as j associated therewith for connecting it to the operating-arm i of a cistern whereby the reservoir is tilted at each operation so that a quantity of liquid enters a collecting-device c from which it is discharged into the cistern as the reservoir returns to normal position. The reservoir comprises a cylinder with an inclined end b, the part c, which discharges through a pipe d, being accommodated in the resultant upper corner. A filler-cap h with an air-vent is provided. The reservoir and arm i may be connected by a clamp or by a lever, chain or spring and the former may be mounted to tilt in a fixed support, its movement being limited by a stop.
Patent GB-214033-A (GB)
Title: Improved packing for pistions, stuffing boxes and the like
IPC: F16J15/20
Filed: 1923-02-12
Abstract: 214,033. Jackson, C. A., and Jackson, F. A. Feb. 12, 1923. Piston packing.- Packing for stuffing boxes and pistons comprises a tube a, Fig. 1, wound' in a ring or spiral and closed at the ends by plugs f. Alternatively a single plug f may be received in oneend of a ring and fit into the other end. The tube may be of rubber with a canvas or metal fabric reinforcement b and has a wrapping d of asbestos, canvas, hemp, flax, or mica. The interior of the tube may be divided into compartments by diaphragms, or the. tube may have an internal spiral rib or annular ribs g, Fig. 5, or may contain a metal spiral. The closing plug may have a slit h through which air can be forced.