baber/WOPTO huggingface dataset:
Patent GB-1293937-A (GB)
Title: Improvements in or relating to receiver arrangements for data transmission systems
Inventor: REYNOLDS JOHN SPACKMAN
IPC: H04L27/233
Filed: 1969-09-25
Abstract: 1293937 Digital transmission systems; phase modulation GENERAL ELECTRIC CO Ltd 24 Sept 1970 [25 Sept 1969] 47363/69 Heading H4P A receiver for a differential phase shift system has a plurality of signal storage circuits 1 each retaining for a determined period, information in respect of the phase as the incoming signal during a data bit period for comparison with similar information derived during the preceding or succeeding period. Each signal storage circuit comprises at least three interconnectable capacitive storage networks to which incoming signals are successively applied. Preferably each signal storage circuit comprises four capacitors 11 with means 12 cyclically to connect one electrode of each in turn to a common point. The cyclic rate at which the switch 12 operates may be equal to or a sub multiple of the carrier frequency. A switch 13 which removes capacitor charges, is closable for at least one cycle of switching circuit 12. An input bandpass filter 14 may be provided and simple individual lowpass filters 4 counter unwanted responses from storage circuits 1 these being connected through a cyclically stepped switching arrangement 5 to a comparison circuit 6 which is gated through circuit 8 during the first half of each data bit period, switch 13 being closed during the second half. By means of synchronizing and control circuits (not shown) switches 2 are closed successively each for one data bit period and opened for the following two periods so that the phase of the carrier signal during successive periods is stored and arrangement 5 enables signals in successive adjacent periods to be compared. The arrangement may be adapted for four phase signalling by causing one of the storage circuits 1 to pause in its commutation by a time i.e. # of a cycle. The first phase comparison is then made followed by another pause in commutation also 1/8 of a cycle giving a total phase shift equal to 90 degrees. The second phase comparison is then made. In an alternative form of receiver voltage stored on capacitors 11 could be compared in parallel using differential amplifiers to achieve phase comparison directly with the switching circuits temporarily off. Filter 14 may comprise a network of similar form to the storage circuits 1 and stepped by the same signals as the bandwidth of such networks is dependent on the time constant of the CR circuit 10, 11 while the centre frequency is determined by the cyclic frequency. The switching operations may be performed by transistor circuits.
Patent GB-1162609-A (GB)
Title: Process for Dimerization of Olefins
IPC: C07C2/36
Filed: 1967-10-19
Abstract: 1,162,609. Dimerization of hydrocarbons. B. F. GOODRICH CO. 19 Oct., 1967 [20 Oct., 1966 (2)], No. 47606/67. Heading C5E. C 2-4  alpha-olefins are dimerized or co-dimerized, and ethylene is co-dimerized with vinyl cyclohexene, in the presence of a catalyst comprising:- (a) a nickel salt, e.g. NiBr 2 , NiCl 2  or nickel acetylacetonate; (b) an alkyl aluminium compound, e.g. tributyl aluminium, dipropyl aluminium chloride, ethyl aluminium sesquichloride, or butyl aluminium dichloride; (c) a halogen-containing olefin, e.g. crotyl chloride, 1-chloropropene-1 and 2,3-dichloropropene.
Patent GB-1411465-A (GB)
Title: Continuous production of aqueous dispersions of vinyl-alkanoate ethylene copolymers
IPC: C08F20/38
Filed: 1973-10-12
Abstract: 1411465 Continuous copolymer production BAYER AG 12 Oct 1973 [14 Oct 1972] 47667/73 Heading C3P In a process for the continuous production of a copolymer dispersion of solids content 45-65% by weight ethylene, a vinyl alkanoate and a compound of the formula in which R is hydrogen or methyl, X is -O-, -NH-, or -N alkyl-, Y is a C 2 -C 10  alkylene group and Me is ammonium or alkali metal are continuously reacted in an aqueous medium containing initiator, buffer, 0.3-3% based on water of an emulsifier and 0.1-15% based on water of the specified sulphonate monomer under an ethylene pressure of 5-120 atmospheres. A single reactor or series of reactors may be used. A further monomer may also be introduced.
Patent GB-1097530-A (GB)
Title: Improvements in or relating to the generation of electricity with hall current generators
IPC: H02K44/08
Filed: 1965-11-10
Abstract: 1,097,530. Generators operating by electromagnetic interaction with fluids. AVCO CORPORATION. Nov. 10, 1965 [Feb. 23, 1965], No. 47756/65. Heading H2A A generator intended to generate electricity from the Hall current in a hot electricallyconductive gas consists of two facing circular discs 15, 17 of insulating material. Heated and " seeded " gas is introduced through a central aperture 16 in the upper disc 15 and passes radially outwards between the discs. A winding 24 or 25 coaxial with the disc is located at the outside of each disc near its periphery to produce a magnetic field through the discs perpendicular to their plane. A " normal ", or magnetohydrodynamic, current is thus produced between the discs, but because of the pattern of flow of the gas, this current closes upon itself. However, Hall currents are developed in a radial direction. The inner side of the apertured disc 15 has near its centre a coaxial anode 30 accommodated in a surface recess, and near its periphery a cathode 31 similarly accommodated. The cathode 31, instead of being continuous, may consist of a number of segments.
Patent GB-1327618-A (GB)
Title: Shrouded propellor drives
IPC: B64C11/00
Filed: 1970-10-08
Abstract: 1327618 Boundary layer control MESSERSCHMITT-BOLKOW-BLOHM GmbH 8 Oct 1970 [11 Oct 1969] 47963/70 Heading F2R A shrouded propeller drive comprising a rotatable propeller, shroud means around the propeller including a shroud ring, the propeller having a streamlined hub which together with said ring defines a boundary over which a layer of air is moved by rotation of the propeller, means for varying the outlet cross-section of the shroud from the propeller downstream of the said ring, and means adjacent to the propeller  for generating stabilized layer vortices to influence the air flowing over at least some of the boundary surfaces. In Fig. 1, a shrouded propeller drive mounted on an aircraft has a rotatable hub 2 which is rigidly attached to propeller blades 1 having a shroud ring 4. The shroud also includes a casing comprising split flaps 8, 8<SP>1</SP> pivotable at hinges 50 on the leading edge of a fixed inlet duct 5 coextensive with ring 4, from position 8 to position 8<SP>1</SP>. A gap 6 between the duct 5 and ring 4 causes a stabilized layer vortex 28 to form to prevent breakaway of the airstream 52 from the propeller when the flaps are in position 8<SP>1</SP>. A fixed hub body 3 includes an annular trough 10 and an annular gap at 11 through which engine exhaust gas passes to form a vortex within the trough 10 to guide air into the duct 5. Exhaust gas is also passed through the gap 12 between the hub body 3 and the rotatable hub 2. In Fig. 2 the blades 15 are not shrouded, the shroud means comprising a ring 14 having an annular tube 13 and an annular slot 13 for blowing exhaust gas to form a vortex between the ring 14 and flaps 17, 17<SP>1</SP>. Features 2<SP>1</SP>, 3<SP>1</SP>, 10<SP>1</SP>, 11<SP>1</SP> are analogous to those 2, 3, 10, 11 in Fig. 1. In another embodiment, Fig. 3 (not shown) the front fan of a front fan jet engine has a casing extending around and to the rear of the fan and formed with a ring having an annular trough and gap analogous to those in the hub body of Fig. 1. Flaps are pivoted to the outside of the trough and extend rearwardly thereof. A blown annular gap is formed on a hub body which extends rearwardly of the fan and flaps.
Patent GB-1116947-A (GB)
Title: Improvements in or relating to oscillator generator arrangements
Inventor: GRISDALE GEORGE LAMBERT
IPC: H03L7/22
Filed: 1964-11-25
Abstract: 1,116,947. Automatic frequency control systems. MARCONI CO. Ltd. 1 Oct., 1965 [25 Nov., 1964], No. 47991/64. Heading H3A. A voltage controlled oscillator 6, Fig. 3, providing the final output at terminal 5 at the difference between the frequency f2 of a stable oscillator 2 and the frequency f1 of a second oscillator 1, is stabilized by feeding its output through an isolating stage 7 to a mixer 3 to derive a beat frequency (nominally f1) which is fed through a band-pass filter 8 to a phase discriminator 9 and compared with the output of oscillator 1 to derive a control voltage which is applied to a voltage controllable reactance 10 determining the frequency of oscillator 6. The oscillator 2 may be adjustable in discrete steps over a range of 5-21 Mc/s. and the frequency f1 may be adjustable over a range from 1 to 2 Me/s. The oscillator 1 is a voltage controlled oscillator stabilized by a further A.F.C. loop against a reference frequency fR, the ratio of f1 to fR being adjustable by a control unit 12. In a modification, Fig. 4 (not shown), the outputs of oscillators 1 and 2 are combined in a second mixer (14) to derive f2-f1 which is compared with the reference frequency fR to control the oscillator 1.
Patent GB-1454778-A (GB)
Title: Therapeutic compositions comprising dioxamates
IPC: A61K31/22
Filed: 1973-11-28
Abstract: 1454778 Anti-asthma &c medicines UPJOHN CO 28 Nov 1973 [20 Dec 1972 26 July 1973] 48170/75 Divided out of 1454777 Heading A5B [Also in Division C2] Pharmaceutical compositions for the treatment of asthma, allergies, auto-immune diseases and the like comprise a carrier and a compound of the formula: wherein the NH . CO . COOR groups are in the 1, 3 or 1, 4 positions, R is H, C 1-6  alkyl or phenyl X and Y are H, halogen, C 1-4  alkyl or C 1-4  alkoxy but when they are not both H then R is alkyl or phenyl. The compositions may be in conventional forms for oral, parenteral and rectal administration and for inhalation.
Patent GB-482445-A (GB)
Abstract: 482,445. Electric signalling systems. AUTOMATIC ELECTRIC CO., Ltd., (in Liquidation), and ROSEBY, P. N. Sept. 29, 1936, No. 26432. [Class 40 (i)] In a system in which apparatus is operated by frequency pulses transmitted over power mains, a resistance which decreases in accordance with the duration of current flow therethrough is connected in series with a responding device so that this operates only when the signal current persists for more than a predetermined time. The invention is described as applied to a system for lighting street lamps. When a pulse of the correct frequency is received, relay 10 responds and closes the circuit of magnet 11. In series with magnet 11 is a resistance 12 of material such as fused copper oxide known as " Cuprotherm," the resistance of which decreases in accordance with the duration of current flow. When the frequency has been received for the predetermined time the value of the resistance 12 has dropped sufficiently to allow magnet 11 to operate so that lamps L1 and L2 are lit. The switch 14 operated by magnet 11 has three positions so that a second operation of magnet 11 extinguishes lamp L1 only and a third operation restores the switch to normal. Specifications 175,365, [Class 37], and 441,020, [Group XXXIX], are referred to.
Patent GB-1404044-A (GB)
Title: Method of heat treating steel strip
IPC: C23C2/02
Filed: 1972-10-19
Abstract: 1404044 Annealing steel strip MlDLANDROSS CORP 19 Oct 1972 48256/72 Heading C7A Steel strip containing 0.04-0.1% of carbon which has been cold-worked by 40-80% is heated rapidly to a temperature in the A 1 -A 3  range so that appreciable work stress is retained, held at that temperature until all stress is relieved, and then heated to a temperature above A 3  where it is held until a uniform grain size is developed. In a preferred embodiment the sheet is heated to 1550F in 75 seconds, held for 30 seconds, heated to 1750F in 50 seconds, held for 60 seconds, cooled to 850F in 70 seconds, cooled to 650F in 80 seconds and finally cooled to 200F in 150 seconds, while alternatively it may be cooled from 850F to 650F at 10F/min.
Patent GB-1061366-A (GB)
Title: Blends of polyolefines and rosin derivatives
IPC: C08L23/02
Filed: 1965-11-15
Abstract: Blends comprise a polymer of a C3- 6 a -olefin and 1 to 60 weight per cent of said blends of a compatible rosin derivative having a drop softening point of above 70 DEG  C. said rosin derivative comprising (1) hydrogenated rosin, disproportionated rosin, polymerized rosin, condensation adducts of rosin and unsaturated carbocyclic compounds, hydrogenated disproportionated rosin, hydrogenated polymerized rosin, or hydrogenated adducts of rosin and unsaturated carbocyclic compounds; (2) dihydroabietic, tetrahydroabietic, dehydroabietic, dihydrodextropimaric, tetrahydrodextropimaric, dihydroisodextropimaric or tetrahydroisodextropimaric acid; (3) a hydroabietyl alcohol ester of (1) or (2); (4) a dirosin amine; (5) a monoamide of formula HNXY, where X is dihydroabietyl, tetrahydroabietyl, dihydrodextropimaryl, tetrahydrodextropimaryl, dihydroisodextropimaryl or tetrahydroisodextropimaryl and Y is the acyl radical of one of the above rosin acids; or (6) diamides Y-NHCH2 CH2NH-Y, where Y is as defined in (5) above. Specified polyolefins are polymers of ethylene, propylene, and higher a -olefins.  The compositions may also comprise stabilizers, antioxidants and antacids, and may be made into heatsealable, self-supporting films, e.g. for packaging. Examples describe compositions comprising polypropylene, dilaryl thiodipropionate, crotonaldehyde/3 - methyl - 6 - t - butyl phenol condensate and calcium stearate together with (1) N-dihydroabietyl amide of partially hydrogenated rosin, (2) fully hydrogenated dimerized rosin, (3) fully hydrogenated rosin/styrene adduct, (4) fully hydrogenated rosin, (5) dehydroabietic acid, (6) hydroabietyl alcohol ester of partially hydrogenated rosin, (7) diamide from fully hydrogenated rosin and ethylene diamine, and (8) dirosin amine.
Patent GB-1157342-A (GB)
Title: Apparatus for Stripping Sheets from Xerographic Plates
IPC: G03G15/00
Filed: 1966-10-28
Abstract: 1,157,342. Sheet delivery apparatus. RANK XEROX Ltd. 28 Oct., 1966 [1 Nov., 1965], No. 48356/66. Heading B8R. [Also in Division G2] Sheets carrying a transferred developed electrostatic image are stripped, progressively across their width, from a xerographic drum 10 by an apparatus having a plurality of orifices 27 which supply compressed air directed against the surface of the drum. A manifold 25 carrying the orifices is tilted in a vertical plane to promote progressive stripping. Compressed air is delivered to the manifold by a tube 29 under the control of a solenoid valve 31 actuated when a switch (15) Fig. 1 (not shown) is operated by feeding a sheet to the drum 10. An accumulator tank 35 is supplied with compressed air by a compressor 36.
Patent GB-1429572-A (GB)
Title: Composite hseet building material
IPC: B25C5/02
Filed: 1973-10-17
Abstract: 1429572 Laminates; staplers TOKYO PLYWOOD KK and NAOMITSU MEGUMI 17 Oct 1973 [25 Oct 1972 (2)] 48419/73 Headings B5N and B4C A composite sheet material suitable for building purposes comprises a base formed of a board or of a plurality of boards in edge-toedge relationship with each other, and, superimposed on the base one after the other, a felt formed of inorganic fibres, a moisture-proof sheet and one or more reticulate metal sheets, all the components of the sheet material being held together by staples at numerous points distributed over the area thereof, each staple straddling a mesh of the reticulate sheet, penetrating the whole thickness of the composite sheet material and having its ends clenched against the lower surface of the base. A reticulate sheet is defined as being a sheet composed of numerous interconnected solid portions separated by spaces, e.g. a wire mesh, chainwork or expanded metal; a felt is defined as being a fabric of matted unwoven fibres. In the embodiment shown in Fig. 2 the base is a single board 1, e.g. of antiseptically treated wood or plywood, and carries an inorganic felt 2, e.g. of glass, asbestos or slag wool fibres, a moisture-proof sheet 3 and a wire mesh sheet, the staples being shown at 5. In the embodiment shown in Fig. 4, the composite material comprises base 12 formed of a plurality of antisepectically-treated wooden boards 11 which are arranged side by side at small distances apart, a moisture-proof sheet 13, a felt 14, a second moisture-proof 15 and a reticulate metal sheet 16. In a further embodiment, two layers of reticulate metal sheeting are used. The moisture-proof sheet material may be a bituminized felt. An apparatus for use in making the composite sheet material comprises a guide block 31 for the staples to be inserted and a support block 35 for the base board or boards, the guide block being a rigid metal plate having a plurality of pairs 28 of adjacent parallel ridges 26, 27 running across and spaced apart over its upper surface 25 and having between the ridges of each pair a row of spaced apart holes 30, the holes in one row being staggered with respect to those in each adjacent row, the support block having a plurality of pairs 34 of similar grooves 32, 33 running across its upper surface 36, the two grooves of each pair being contiguous and their combined width at the surface of the block being substantially equal to the diameter of the said holes and the spacing apart of the pairs of grooves being such that the guide block can be superimposed on the support block with the centre of each hole directly above the centre line between the two grooves of a pair, with the assembly of components from which the composite sheet is to be formed interposed between them, such that the stapling together of the components can be effected by moving a stapler along each pair of ridges in turn and operating it to drive a staple through each of said holes, the ends of the staples being clenched by contact with the surfaces of the grooves in the support block.
Patent GB-1491280-A (GB)
Title: Electrode plate assembly for electric storage batteries
IPC: H01M50/103
Filed: 1975-11-26
Abstract: 1491280 Battery comprising electrode frames VARTA BATTERIE AG 26 Nov 1975 [26 Nov 1974] 48630/75 Heading H1B In an electric storage battery in which positive and negative plates are each enclosed in a synthetic resin frame, the frames have identical external dimensions and are stacked together to form an assembly having its outer surfaces leaktight, and the frames have upwardly extending projections defining an electrolyte and gas space. The plate may occupy only the middle part of the frame, there being also a sediment space at the bottom of each frame in addition to the electrolyte/gas space at the top; a fleece of synthetic resin or glass fibre may be located either side of the electrode to give support to the active material; corrugated separator members located in their own frames also of identical external dimensions may be interposed between each positive and negative plate; between the corrugated separator and the sediment space a row of holes is situated to allow electrolyte circulation. The frames may have complementary tongues and grooves at their periphery and are sealed together by adhesive or thermowelding; the frames are of polyethylene or polypropylene, and end-plates are provided to close the cell; a synthetic resin sheath may be shrunk on to the assembly so formed, or the stack surrounded by a container. The cell may be a lead-acid cell.
Patent GB-1330789-A (GB)
Title: Method and apparatus for piecing up yarns
IPC: D01H15/013
Filed: 1971-10-20
Abstract: 1330789 Piecing and replacing travellers on ring spinning devices SCHUBERT & SALZER MASCHINENFABRIK AG 20 Oct 1971 [22 Oct 1970] 48686/71 Heading DID  An automatic piecing device for a ring spinning machine comprises means for locating and removing the traveller and replacing it by a new ring. As described, a travelling unit stops at a spindle, when a photocell on the unit detects a broken yarn at the spindle. A platform carrying the traveller replacing device is raised to the level of the ring rail. An auxilliary length of yarn H is then fed to the spindle station and laid in the replacement traveller. The original traveller is located and pushed onto a traveller ejector (60 or 600 Fig. 2 not shown) which has been placed against the ring, and is thereby ejected and collected (at 65) by the travelling unit. The replacement traveller already threaded with the auxilliary yarn, is then swung down onto the ring. The arm which carried the replacement traveller swings back and picks up another traveller from a store (66) ready for the next piecing operation. The piecing operation can be performed as described in Specification 1296936.
Patent GB-1489886-A (GB)
Title: Semiconductive devices
IPC: H01L21/762
Filed: 1974-11-12
Abstract: 1489886 Semiconductor devices DIONICS Inc 12 Nov 1974 [15 Nov 1973 (2)] 48937/74 Heading H1K In the formation of a gradual PN junction a two-stage diffusion process is used, resulting in an inner relatively highly doped zone 44 (Fig. 2) and an outer much lower doped zone 38 of the same conductivity type defining the actual junction with the surrounding semiconductor body 32. The surface impurity concentration of the outer zone 38 is at most 10<SP>16</SP> cm<SP>-3</SP>, being 2-4 orders of magnitude less than that of the inner zone 44. The impurity concentration of the body 32 is at most 10<SP>15</SP> cm.<SP>-3</SP>. The presence of the outer zone 38 increases the effective breakdown voltage of the junction. Fig. 2 shows a planar transistor of which the collector junction has been formed by a two-stage diffusion of the base region 44, 38. In a highfrequency modification of this device the lowerdoped outer zone (82), Fig. 8 (not shown), of the base region does not extend vertically beneath the higher-doped inner zone (84). An integrated circuit resistor may be isolated from the surrounding substrate by a PN junction formed in accordance with the invention. Fig. 7 shows a junction-isolated integrated circuit structure comprising N-type islands defined in a Si epitaxial layer on a P-type substrate 70 by P-type isolation walls comprising a main relatively highly-doped portion 74 surrounded at the surface by a lower doped portion 76 to increase the breakdown voltage. Fig. 11 shows a dielectric-isolated structure. An island 92 isolated from a polycrystalline matrix 90 by a SiO 2  layer 94 contains a diode the PN junction of which is formed in accordance with the invention. Into the N type island 92 is diffused a highly doped P-type zone 108 and a surrounding lower-doped P-type zone 104 which also extends through the isolation layer 94 and into the matrix 90 at least below the location of the conductive track 100 connected to the zone 108. The SiO 2  layer 94 extends both around and beneath the island 92, but in a modification an isolated island containing a transistor extends fully through the matrix, being only laterally surrounded by SiO 2 . In this case the basecollector junction is formed in the same manner as the diode junction of Fig. 11, connection to the collector region being at either the upper or the lower surface. If the poly crystalline matrix is etched away an air-isolated structure is provided.