baber/WOPTO huggingface dataset:
Patent GB-1451054-A (GB)
Title: Schottky barrier diodes
IPC: H01L29/47
Filed: 1973-11-01
Abstract: 1451054 Schottky diodes GENERAL ELECTRIC CO 1 Nov 1973 [1 Nov 1972] 50848/73 Heading H1K In a Schottky diode, a layer of semiconductor material of one conductivity type has a net activator concentration which increases continuously or stepwise between a rectifying contact on one face of the layer and a non-rectifying contact on the opposite face. As shown, an N<SP>+</SP> Si substrate 12 is in ohmic contact at interface 15 with an N-type Si layer 13 epitaxially grown thereon, a Schottky contact 22 of Al, W, platinum silicide &c. being deposited on mesa surface 14 of layer 13. Layer 13 is made up of two sublayers 13a, 13b, each of uniform net activator concentration, the said concentration of sublayer 13a adjacent the Schottky barrier being lower than that of sublayer 13b adjacent the ohmic contact. A metal, e.g. Mo, layer 16 is deposited on the free face of substrate 12 to provide an ohmic terminal thereto, and a layer 18 of SiO 2  surrounding the barrier layer 22 co-operates with an overlying metal layer 21, e.g. Mo, to moderate the electric field at the diode pheriphery. A plurality of such diodes may be formed on a substrate having a single epitaxial layer thereon, which is subsequently divided to provide discrete diodes which are individually packaged. As an alternative to a stepped variation of net activator concentration, the latter may vary parabolically; and diffusion and ion implantation may replace epitaxial growth in the formation of the diode.
Patent GB-1447795-A (GB)
Title: Azo dyestuffs process for their preparation and their use for  dyeing synthetic fibre materials
IPC: C09B29/085
Filed: 1973-11-02
Abstract: 1447795 Octylaminophenacetines HOECHST AG 2 Nov 1973 [7 Nov 1972] 50935/73 Heading C2C [Also in Divisions C4 and D1] The dyestuff intermediates 2-n-octylaminophenacetine and 2 - isooctylaminophenacetine are obtained by reacting 2-aminophenacetine with n- or iso-octanal.
Patent GB-1133737-A (GB)
Title: Pressure loaded gear pump
IPC: F04C2/14
Filed: 1965-12-03
Abstract: 1,133,737. Gear pumps. BORG-WARNER CORP. Dec. 3, 1965 [Dec. 23, 1964], No.51441/65. Heading F1F. A pressure-loaded gear pump comprising driven and driving gears 24, 26, Fig. 1, formed with journals rotatable in fixed bearings 54, 56 and axially movable, pressure-loaded bearings 66, 68, includes pressure confining means disposed between the pump housing cover 14 and the bearings 66, 68 to isolate a chamber 86 from which leakage flow across the gear faces as conveyed to the pump inlet from a chamber 106 communicating with pump discharge. The bearings 66, 68 are formed with counterbores 101, 101a to provide faces 78, 80 which are isolated by the pressure confining means from faces 79, 81 provided with a series of bores 67 into which springs 69 are inserted to urge the bearings 66, 68 into sealing engagement with the side faces of the gears on starting the pump. In one embodiment, the pressure confining means is made in one piece 88, Fig. 3, having a flange 88 which abuts the inner face of the cover 14 and projecting tubular portions 98 formed with end flanges 100. The tubular flanged portions of the pressure confining means are disposed in the counterbores eccentrically with respect to the journals. Being in closer proximity to the inlet than to the outlet of the pump, so that greater pressure is exerted on the bearings 66, 68 on the outlet side of the pump to compensate for the pressure gradient existing from inlet to outlet. Leakage flow across the gear faces is conveyed to the chamber 86 through annular recesses 55, 57 and axial grooves 59 in the bearings and an axial bore through the gear 24 and its journals. The leakage flow lubricates and cools the bearings. A passage 110 conveys leakage flow from the chamber 86 to the pump inlet. In another embodiment, flanged projections are formed on the inner face of the cover 14.
Patent GB-1223605-A (GB)
Title: An improved sealing device
Inventor: SHARP RICHARD BRUCE
IPC: F16J15/46
Filed: 1968-02-22
Abstract: 1,223,605. Joint-making packing. R. B. SHARP. 19 Feb., 1969 [22 Feb.,1968; 30 Oct., 1968],Nos. 8764/68 and 61462/68. Heading F2B. A seal for a furnace door comprises first and second tubes or tubular constructions 16, 15 made of flexible inelastic material, the second tube or tubes being attached at diametrically opposed positions 17 to the first tube to provide closed chambers 18, 18, 19 having connections 22, 42 for the supply and discharge of fluid (water). The tubes may be made of canvas, rubberized fabric or metal and formed into an endless ring; alternatively the tubes may have closed ends, several of such tubes being arranged end-to-end if desired. When fluid is supplied through valves 21, 24 either at the same pressure to the chambers 18, 18, 19 or at a higher pressure to the chambers 18 than that to the chamber 19, the first tube 16 becomes circular in cross-section as shown in Fig. 3 so as to span and seal the gap between two surfaces. The seal is retracted by adjusting the pressures such that the chamber 19 at a higher pressure than that in the chambers 18 forces the second tube 15 into circular cross-section and the first tube 16 into oval cross-section, as shown in Fig. 2. The portion of the first tube which moves into sealing contact may be protected from heat by a metal sheath (28) and strip (30), Fig. 5 (not shown), or by a metal shroud (31), Fig. 6 (not shown). Cooling may, however, be effected either by the percolation of water through the walls of the tubes or by circulation of the pressure fluid. In Fig. 8, a second tube 15 having a flexible hose connection 42 is attached to a first tubular construction which is formed by an angle member 32, a flexible laminar sealing member 36 and part of the second tube. When the pressure in the chamber 18 is adjusted to be greater than that in the chamber 19 by means of connections 42 and 20, the second tube 15 becomes oval in shape as the sealing member 36 makes contact with the surface 26. In Fig. 9 (not shown) two second tubes (15) of the same or different diameters are spanned by a flexible sealing element (36) which forms part of the first tubular construction.
Patent GB-1482761-A (GB)
Title: Mineral winning machines
IPC: E21C27/32
Filed: 1974-11-28
Abstract: 1482761 Mining machines GEWERKSCHAFT EISENHUTTE WESTFALIA 28 Nov 1974 [6 Dec 1973] 51568/74 Heading E1F In a mineral winning machine, a mechanism for rotating a shaft 17 to adjust the position of a floor cutter 18 comprises a rotable control rod 20 having an offset portion 22, an annular member 23 rotatably mounted on the offset portion, and a cam 25 extending radially from the annular member to engage a bifurcated portion 28 of a lever 27 fixed to the shaft 17. The control rod 20 is rotated by a spanner engaged within a spigot portion (20', Fig. 1 not shown) and is secured in a particular disposition by a pivotally mounted flap (30).
Patent GB-1035150-A (GB)
Title: Nuclear reactor fuel element assembly
Inventor: THOME PAUL
IPC: G21C3/32
Filed: 1964-12-18
Abstract: 1,035,150. Fuel elements. COMMISSARIAT A L'ENERGIE ATOMIQUE. Dec. 18, 1964 [Dec. 18, 1963], No. 51678/64. Heading G6C. A fuel element assembly, intended for use in a gas-cooled reactor, comprises a cluster of parallel fuel rods supported by structural members which include at least one grid and a sleeve enclosing the cluster; the outer sleeve incorporates a heat insulating packing which is fitted to the sleeve through the intermediary of a vibration absorbing material. The heat insulating material may be silica; expanded alumina, silicon carbide foam, or silica fibre clad in thin metal sheet. The fuel assemblies are placed in pressure tubes, and the heat insulating material is intended to protect the pressure tubes from the hot coolant gases within the assemblies. The vibration absorber is preferably graphite felt. Construction.-The fuel rods (not shown) are held in grid 24 by spot welding their end spigots; they are laterally restrained by intermediate grids, and by a second end grid 7; the rods are free to move axially in all grids except 24. All grids are of stainless steel. Beryllium tie-rods 2 extend between the grids, and the thus defined apertures are filed with the heat insulating panel 8. The vibration absorber is fitted between the ends of the panels 8 and the grid flanges in which they are retained.
Patent GB-1284425-A (GB)
Title: Improved epicyclic gearing
IPC: F16H1/28
Filed: 1969-10-22
Abstract: 1284425 Toothed gearings DEMAG AG 22 Oct 1969 [25 Nov 1968] 51793/69 Heading F2Q A floating sun gear 1 is mounted relative to an axially-fixed planet carrier 4 by a rod 2 connected to the planet carrier 4 and passing through an axial bore in the sun gear 1. The floating sun gear 1 is mounted with play between a collar 3 and a washer 5 secured to planet carrier 4 and it is coupled to a driving shaft by means of an internally toothed coupling sleeve 6. In a modification, a rod 2 has self-aligning bearings 8, 9 at its ends.
Patent GB-1119156-A (GB)
Title: Improvements in temperature compensation of crystal oscillators
Inventor: PAGE PETER BERNARD
IPC: H03B5/36
Filed: 1966-11-18
Abstract: 1,119,156. Crystal oscillator circuits. STANDARD TELEPHONES & CABLES Ltd. 18 Nov., 1966, No. 51816/66. Heading H3F. In a crystal oscillator, a compensating network for stabilizing the frequency of the oscillator against temperature changes comprises a voltage stabilizing means ZD1 which is shunted by a compensating network having a linear voltage-temperature characteristic and including a temperature-sensitive resistance network TH1 and a variable reactance VD1 which is connected to the crystal to be compensated. As shown, voltage stabilization is provided by a Zener diode ZD1 and temperature compensation by a negative or positive temperature coefficient thermistor TH1 which may be interchanged with R2. Resistive potential dividers R3, R4, R5, R6, which may be variable, supply a voltage which is dependant on changes in temperature to a variable capacity diode VD1 connected between the crystal 4 and oscillator network 5 (Fig. 3, not shown). The capacitance of the diode VD1 changes in an opposite sense to that of the crystal so as to stabilize the oscillator frequency. Resistors R3, R4; R5, R6 may be formed of two variable resistances, each having a slider connected to one electrode of the variable capacity diode VD1 via high resistances. The crystal may be an AT-cut quartz type.
Patent GB-1119687-A (GB)
Title: Watercraft propulsion pump
Inventor: DELAO MARTIN M
IPC: B63H11/00
Filed: 1966-11-21
Abstract: 1,119,687. Jet propulsion. BUEHLER CORP. 21 Nov., 1966, No. 52005/66. Heading B7V. [Also in Division F1] A boat 10, Fig. 1, is driven by a pump 13 (see Group F1) receiving water through an opening 12 and discharging it as a jet through a convergent outlet (100A), Fig. 2 (not shown). The pump is driven by a marine engine 14 through a shaft 15 and a universal joint 24. The convergent outlet may be closed by a conical valve (111) so that the pumped water can be delivered for other applications, e.g. fire-fighting.
Patent GB-1380180-A (GB)
Title: Flame detector
IPC: G01N27/62
Filed: 1972-11-10
Abstract: 1380180 lonization counters HEWLETTPACKARD GmbH 10 Nov 1972 [30 Nov 1971] 52060/72 Heading H1D A thermionic flame detector comprises a flame nozzle 9, inlets for combustible gas and a mixture of carrier and sample gases, an electrode 19 disposed about the open end of the nozzle, a collector 13 spaced ftom the nozzle and means for maintaining the nozzle and electrode 19 respectively positive and negative with respect to the collector. A vaporizer and gas chromographic column 2 are connected to a selective thermionic detector 3 having a cylindrical collector 13 containing a RbBr salt crystal 14. Compressed air enters through pipe 7 and exhaust gases pass out through a metal grid 8 and aperture 6; the grid maintaining a pressure above atmosphere in the detector. The nozzle is maintained at 350 V, the annular electrode 19 at a variable potential between 0 and - 350 V and the collector is grounded. A measuring device 16 is connected to the collector 13. H 2  and N 2  containing an organic sample are supplied to the nozzle. The annular electrode reduces noise by absorbing positive carbon ions whilst organic nitrogen ions are gathered by the collector. A separate ignition circuit may be provided.
Patent GB-1351825-A (GB)
Title: Resins containing fatty acid esters
IPC: C08G59/14
Filed: 1971-11-10
Abstract: 1351825 Resins containing conjugated unsaturation PVO INTERNATIONAL Inc 10 Nov 1971 [23 Dec 1970] 52138/71 Headings C3B and C3R Resins are prepared by reacting, at 425- 550 F., a polyunsaturated, non-conjugated fatty acid providing component having a linoleic acid or ester content of at least 60% by weight with either (a) an alkyd resin forming mixture of a polyhydric alcohol and a polycarboxylic acid, or (b) an epoxy resin which is liquid at reaction temp., in intimate contact with SO 2  gas. The presence of SO 2  leads to the formation of a conjugated resin having an increased proportion of trans-trans conjugation compared to a resin prepared in the absence of SO 2 . The resins are useful in coating compositions; the resultant coatings may be hardened by baking, e.g. for up to 30 minutes at 300 F.
Patent GB-1444565-A (GB)
Title: Process for conversion of alkyl transchrysantemates in admixture with alkyl cis-chrysanthemates to the corresponding acid
IPC: C07C61/37
Filed: 1973-11-12
Abstract: 1444565 Chrysanthemic acid SUMITOMO CHEMICAL CO Ltd 12 Nov 1973 [13 Nov 1972] 52391/73 Heading C2C Trans-chrysanthemic acid is obtained by reacting a mixture of an alkyl trans-chrysanthemate and a alkyl cis-chrysanthemate with an alkali in the presence of water and/or an alcohol, using an amount of alkali which is substantially equimolar or less to the amount of trans-isomer in the mixture, to form a mixture comprising trans-chrysanthemic acid and unreacted alkyl cis-chrysanthemate and separating from each other the trans-chrysanthemic acid and the unreacted alkyl cis-chrysanthemate.
Patent GB-1369600-A (GB)
Title: Line follower
Inventor: LISTER PAUL FRANK
IPC: B23Q35/40
Filed: 1970-11-05
Abstract: 1369600 Photo-electric line followers BRITISH OXYGEN CO Ltd 2 Nov 1971 [5 Nov 1970] 52746/70 Heading G1A In a photo-electric line follower for use in machine tool control, in order satisfactorily to follow a line provided with thicker portions e.g. 18, Figs. 2, 3 which are arranged to produce signals to inhibit operation of the tool, a pair of oscillating photo-cells 10, 12 are provided, one (10) of which scans a focused image of the line and the other (12) of which is positioned to scan an unfocused image of the line, which image is narrower than the focused image. In one arrangement, Fig.1, cell 10 is mounted higher than cell 12, both being carried by a rod 8 which is oscillated back and forth across the line to be followed, by a Piezo-electric crystal 6 supplied by A.C. cell 10 thus receives, through lens 16, a focused image of the line. For thin portions, it scans across a dark-light boundary four times per cycle, thus providing a sufficient level of output to provide signals for centring of the follower head on the line. However, when it encounters thick portions, no boundaries are crossed and although the required machine inhibit signals are obtained, no centring control signals are obtained either. If cell 12, which is mounted off the axis of rod 8 and produces steering signals (i.e. for rotation of the head), were also at the same height, it too would not produce any signals which could ensure continued following of the line. For this reason it is situated lower than 10 and scans the plane of an unfocused image of the line, which is narrower than the focused image at the higher position. It therefore crosses boundaries and produces a signal level which can be used for steering purposes. In an alternative arrangement, Fig.4 (not shown), the two cells are at the same height above the line and have their own associated lenses, that for cell 12 being of longer focal length and thus providing an unfocused image of the line.
Patent GB-1177810-A (GB)
Inventor: HOBBS ALBERT WILLIAM
IPC: B66C23/78
Filed: 1967-11-20
Abstract: 1,177,810. Changing gauge of wheels; articulated vehicles. A. W. HOBBS. 19 Nov.; 1968 [20 Nov., 1967], No. 52765/67. Headings B7D and B7H. [Also in Division B8] A tower crane arrangement comprises a tower crane superstructure with a jib 10 and trolley 11, tower 12, ballast 13, winch unit 14 and erecting ram 15 for the tower and jib all on a platform on a slewing ring 17 mounted on a vehicular base. The base comprises a hollow box-section beam 18 with back and side outriggers 19 to 21 with jacks 22 to 24. On either side of the beam 18 is a twowheel bogie determining the track of the vehicle. The beam 18 is joined to the chassis of a tractor 25, from which the front wheels have been removed, by a joint located between the tractor's driving wheels 26, 27 and a doubleacting steering ram 28. In road transit the tower 12 and jib 10 are collapsed as illustrated in Figs. 3, 4 (not shown). At the site the side outrigger arms 20, 21 are inserted partially into hollow box-section cross-beam 38, the jacks 22 to 24 are fitted and the bogie wheels raised off the ground. Next the tower crane is erected in a manner similar to that described in Specification 1,083,794. For transit over the site with the tower crane erected each bogie is moved outwards to extend the wheel track by sliding the bogie mounting boxes 87 along the cross-beam 38 before lowering the jacks 22 to 24. The beam 18 is connected to the tractor 25 by a joint, Fig. 9, which provides rotation about a horizontal, longitudinal axis (to allow both driving wheels 26, 27 of the tractor 25 to remain in good contact with the ground) and about a vertical axis (to allow of steering by the ram 28). No motion, or very little motion, is permitted about a third axis at right angles to the other two axes to ensure weight transference from the beam 18 to the driving wheels 26, 27.
Patent GB-1563931-A (GB)
Title: Self-locking fasteners
IPC: F16B39/282
Filed: 1976-12-17
Abstract: The fastening element, e.g. a screw or a nut, has a plurality of rounded-off elevations on the surface which is directed towards the workpiece on which the fastening element acts. These elevations are formed as projecting ribs (2) which have at least one rounded-off portion which, when turning the fastening element relative to the workpiece, slide over the surface of the workpiece in the manner of rolling elements. In this arrangement, ribs hardly penetrate into the material of the workpiece at all. Rather, an essentially uniform fastening of the entire bearing surface of the workpiece beneath the head of the fastening element is effected. At the same time, a locking action with respect to unintentional loosening of the fastening element is achieved because the elastic/plastic deformations, which arise during tightening, of the material of the workpiece result, once the tightening procedure has been completed, in bulges between the rib elevations, which provide sufficient resistance against automatic loosening. <IMAGE>
Patent GB-1373118-A (GB)
Title: System for producing in a single room different styles of furniture  and assembly units for this purpose
IPC: A47B83/00
Filed: 1971-11-15
Abstract: 1373118 Modular furniture M GIACOPETTI 15 Nov 1971 [19 Nov 1970] 52951/71 Heading A4U A set of furniture units for assembly into different styles of furniture comprises two bases (1) two drawers (2), a back (3), two mattresses (4), ten cushions (5), twenty-four cubes (6), five openended box-like members (7), five doors (8), two trolleys (9) and a table top (10). The cube has its dimension equal to a unit dimension, the cushion and door have one dimension greater than or equal to the unit dimension, the base, back and mattress have one dimension five times and another dimension twice the unit dimension, the table top has its dimensions equal to twice the unit dimension, and the drawer, open-ended boxlike member and trolley have one dimension slightly less than the unit dimension.
Patent GB-1332070-A (GB)
Title: Graded polymer particles
IPC: C08F285/00
Filed: 1971-11-17
Abstract: 1332070 Graded acrylic polymer particles FORD MOTOR CO Ltd 17 Nov 1971 [21 Dec 1970] 53427/71 Heading C3P Graded polymer particles comprise (a) a core of a crosslinked acrylic polymer derived from a major proportion of a monofunctional acrylate (i.e. an acrylate or methacrylate ester containing no reactive groups such as hydroxyl or epoxy groups) and a minor proportion of an ethylenically unsaturated monomer containing two or more non-conjugated terminal ethylenic groups; (b) an outer shell of a polymer derived from methyl methacrylate or a mixture of methyl methacrylate and one or more ethylenically unsaturated comonomers containing at least 30 mole per cent methyl methacrylate; and (c) an intermediate layer of a polymer derived from the monomer components of core (a) and shell (b). The particles generally have an average size of from 0À04 to 1 micron. They can be prepared by emulsion copolymerizing the core monomers to a conversion of from 50-90% by weight, then adding the shell monomer(s) and 'completing the emulsion polymerization. Alternatively, copolymerization of the core monomers can be carried out to completion, a mixture of core and shell monomers then added and copolymerized, and finally shell monomer(s) added and polymerized. The monofunctional acrylate in (a) is preferably a C 2 -C 8  monohydric alcohol ester of acrylic acid, e.g. n-butyl or 2-ethylhexyl acrylate; certain other acrylates such as dodecyl methacrylate and benzyl (meth)- acrylate are also useful. Suitable polyethylenically unsaturated crosslinking comonomers include alkylene di(meth)acrylates, trimethylolalkane tri(meth)acrylates, dimethylolcyclohexane dimethacrylate, (meth)allyl (meth)acrylate, diallyl esters and divinyl benzene. Additional comonomers such as styrene, alpha methyl styrene, and (meth)acrylonitrile may optionally be present in the core components. Comonomers for use in (b) include monofunctional acrylates as for (a), styrene and its substituted derivatives, acrylonitrile, methacrylonitrile, isobornyl methacrylate, diacrylates or divinyl hydrocarbons, and monomers containing a reactive group, e.g. glycidyl methacrylate, hydroxyethyl or hydroxypropyl (meth)acrylate, and acrylic or methacrylic acid. The graded polymer particles can be used to form moulded articles.
Patent GB-1153246-A (GB)
Title: Process for the Production of Spin-Dyed Polyamide Filaments
IPC: D01F6/60
Filed: 1967-11-24
Abstract: 1,153,246. Spin-dyed polyamides. GLANZSTOFF A.G. 24 Nov., 1967 [15 Dec., 1966], No.53515/67. Addition to 1,089,390. Heading C3R. Spin-dyed polyamide filaments are produced by suspending a pigment in a mixture of butyrolactam and 10-55% caprolactam, adding this to the polyamide or polyamide-forming mixture and melt-spinning the pigmented polymer. The suspension may include an alkylated naphthyl sulphonate as surfactant. In examples, nylon 6 (1,2,4) or nylon 66 (3) are pigmented with TiO 2  (anatase) (1), cadmium orange (2), brown iron oxide (3) and soot (4).