baber/WOPTO huggingface dataset:
Patent GB-1431887-A (GB)
Title: Separation apparatus
IPC: G01N27/447
Filed: 1972-09-06
Abstract: 1431887 Liquid/liquid contact; dialysis apparatus UNITED KINGDOM ATOMIC ENERGY AUTHORITY 21 Aug 1973 [6 Sept 1972] 41435/72 Headings B1F and B1X [Also in Division C7] A separation apparatus, which may be electrophonetic (see Division C7), magnetic, centrifugal or chemical (diffusion or dialysis), comprises an annular separation chamber 6 bonded by coaxial outer and inner walls e.g. of cylindrical rotor 5 and stator 1 which rotate relatively (at least the outer wall rotating e.g. by rotor drive shaft 7) about a common axis to stabilise flow conditions, inlet means e.g. tube 29 and orifice 31 for introducing migrant material and a migrant-supporting fluid into the chamber, outlet means 9 for selectively removing the supporting fluid with or without separated migrant fractions from the chamber e.g. through end-piece 10, and means for generating a radial force field to separate migrant material into fractions, e.g. porous matrix tube 14, 21 supporting cellulose membrane 15, as disclosed in Specification no. 1186184. The migrant material is supplied e.g. via inlet tube 29 through a porous (e.g. plastics) material 28 in annular trough 27 into a plurality of orifices 25a, thence into an annular opening 26 and into the annular chamber 6; the plurality of orifices may be constituted by a single annular orifice 26 divided by one or more spacers 25. The separated fraction is conducted from a plurality of collecting chamber inlets 33 (only one shown, Fig. 4) along a plurality of non-linear paths via interconnected channels 38 (Fig. 5) to converge at outlet 34 within each collecting chamber; the minimum path length from all points on the inlet 33 being the same; the collecting chambers may be constituted by a stacked plurality of plates 36 with central orifice 37, spaced by washers 32. The carrier buffer passed up through chamber 6 may be a solution of tris(hydroxymethyl) aminomethane citrate, and the migrant fluid dialysed against the buffer solution may be a bovine blood serum.
Patent GB-1122326-A (GB)
Title: Method of manufacturing wear-resistant pieces of vitreous carbon
IPC: C04B35/524
Filed: 1966-09-16
Abstract: Vitreous carbon articles are made by baking a preform, made by cutting and/or machining a hardened mass of a thermosetting and cokeable resin, in a non-oxidizing environment.  The production of the preform may include one or more of the steps of melting, casting, stamping or machining at an intermediate stage in the manufacture. The baking may be carried out by heating at about 1000 DEG  C. and in making the preform it is necessary to take into account the considerable shrinkage which occurs on baking.
Patent GB-1223665-A (GB)
Title: Improvements in or relating to thermal insulation chambers and wedging or spacing means therefor
IPC: F16L59/06
Filed: 1969-08-20
Abstract: 1,223,665. Heat insulating chambers. ALSTHOM-SAVOISIENNE. 20 Aug., 1969 [20 Aug., 1968], No. 41615/69. Headings F4H and F4U. The walls 1, 3 of a vacuum insulated container 4 for a cryogenic liquid refrigerant, e.g. for the super conductive coil of a transformer, are spaced by members 12 having teeth 13, some of the teeth 13 only contacting the walls of the container when they approach, e.g. in an accident. The spacers 12 are formed of a laminated insulating material with the fibres parallel to the bearing stress exerted on the chamber walls in case of an accident. The spacers 12 are spaced over the length of the container, the upper and lower spacers having teeth in permanent contact with the wall intermediate spacers 12 having teeth spaced slightly from the wall 1, Fig. 5. The teeth out of contact with the wall are metallized, and only one tenth of the teeth are in permanent contact with the wall. The arrangement enables a transformer to resist the implosion forces caused by short circuits without the seals of the vacuum insulating chamber being broken.
Patent GB-1009756-A (GB)
Title: Improvements in or relating to means for controlling the defrosting of the evaporator of refrigerating apparatus
Inventor: HERON ANDREW GEORGE
IPC: F25D21/02
Filed: 1962-11-03
Abstract: 1,009,756. Pneumatic actuation of switches. HERON ELECTRICAL DEVICES Ltd. Feb. 3, 1964 [Nov. 3, 1962; Aug. 27, 1963]; Nos. 41652/62 and 33952/63. Heading H2B. [Also in Division F4] Defrosting of a forced draught refrigerator is controlled by a switch operated by the air pressure increase due to frost build-up. A diaphragm 6 of synthetic resin sheet is acted on via tube 16 and causes a lever 8, pivoted at 7, to operate a microswitch 2 at a pressure which is determined by spring 12. Spring 12 is adjustable by a screw 14 which is accessible when a resilient plug 15 is removed from casing 3. To prevent lever 8 continually pressing against diaphragm 5 under normal conditions its movement is limited by an L-shaped projection 17 engaging the wall 1a. A capillary tube may connect the source of pressure to tube 16 to provide delayed operation of the switch; or a tube with a bleed may be used. Alternatively the diaphragm 5 may be exposed directly to the pressure source, the casing portion 1 being omitted. Defrosting may be terminated by restoration of switch 2 or by a time switch.
Patent GB-1481330-A (GB)
Title: Shielding apparatus for a signal splitter
IPC: H01P5/12
Filed: 1974-09-25
Abstract: 1481330 Shield for signal splitter ROCKWELL INTERNATIONAL CORP 25 Sept 1974 [16 Nov 1973] 41768/74 Heading H2E A piece of metal, for combination with an identical piece to form a shield for a signal splitting pad, comprises three channels and a tab 12, 14 ...16<SP>1</SP> on each side of the triangle each tab being closer to one vertex than is any of the other tabs. The piece may be generally equilateral triangle shaped or may comprise three equiangularly spaced legs (Fig. 3, not shown). As described, the signal splitter, comprising three coaxial cables joined at a point through respective resistors (Fig. 4, not shown), is laid in channels 18, 22, 26 in one piece 10, another piece 10<SP>1</SP> is laid on top and the tabs bent over to keep the pieces together and make smaller the gaps through which high frequency radiation can escape. Openings 24 are provided so that the outer conductors of the cables may be soldered to the metal pieces.
Patent GB-1244885-A (GB)
Title: Improvements in or relating to pulse circuits utilizing two-valley semiconductive devices
Inventor: UENOHARA MICHIYUKI
IPC: H03K3/02
Filed: 1968-09-05
Abstract: 1,244,885. Semi-conductor switching circuits; pulse modulation circuits. WESTERN ELECTRIC CO. Inc. 5 Sept., 1968 [12 Sept., 1967], No. 42183/68. Addition to 1,185,073. Headings H3T and H4L. In a modification of the parent Application 16537/67 (Serial No. 1,185,073), including a two-valley semi-conductor device 10, a load circuit 13, means 11 for applying a bias voltage and means 12 for applying input signals to the device, the input signals have a duration less than the domain transit time and the bias voltage 11 is greater than the domain sustaining voltage so that for each input pulse of duration less than # an output pulse of T is obtained. The input source 12 can be from the output of an amplifier or an antenna used to pick up a radiated signal. By supplying the input as an analogue signal a pulse position modulation output is provided (Fig. 3, not shown). The load may be connected in parallel with the device 10 instead of the series connection shown. The circuit elements may be interconnected via strip lines, coaxial cables or waveguides provision being made for shunting the high-frequency currents across at least the D.C. voltage source
Patent GB-1534440-A (GB)
Title: Scanning apparatus
IPC: G02B26/10
Filed: 1976-10-11
Abstract: 1534440 Holographic scanners INTERNATIONAL BUSINESS MACHINES CORP 11 Oct 1976 [23 Dec 1975] 42208/76 Heading G2J [Also in Division G4] A holograhic scanner comprises a disc 10 carrying adjacent its periphery a sequence of sector shaped holograms 12n. The disc is rotated so that the holograms are illuminated seriation by a reconstructing beam 14. Each hologram gives rise to a respective beam 18 focused to an image point which scans a circular arc on a plane parallel to the disc, (see e.g. arcs 30-36 Fig.3). Some image points, (viz 30-32), preceed the radius of the hologram sectors producing them as the disc rotates, and others lag behind. As shown in Fig. 1, the leading scan points are deflected by component 24 to cross a scanning window in one direction (28b). The lagging points are deflected by another component 22 so as to scan the window in another direction (28a). A third beam 18 is deflected at 37 to scan the window at 28c, thereby creating an interlaced crossed scanning pattern at the window. The device is suitable for a bar code reader.
Patent GB-1088097-A (GB)
Title: Improvements relating to circular knitting machines, having electromagnetically controlled thread selector devices
IPC: D04B15/58
Filed: 1964-10-16
Abstract: 1,088,097. Electromagnetic relays. FRANZ MORAT G.m.b.H. Oct. 16, 1964 [Oct. 16, 1963], No. 42361/64. Heading H2B. [Also in Division D1] Thread guides in a circular knitting machine are selected (see Division D1-D2) by a stepping solenoid actuated by a number of current pulses. In one embodiment, Fig. 1, a pivoted lever 8 is depressed by cam 11 and via spring 6 urges lever 4 towards a pattern chain 1. Depression of lever 4, the extent of which is controlled by pegs 2a-2e closes a switch 14 a predetermined number of times. In a second embodiment, Fig. 2a, a series of cam discs, e.g. 19k, close switches 11 a predetermined number of times. The discs are frictionally coupled to interrupted gears 16, successively brought into engagement with a corresponding one of a set of rotating gears, e.g. 2k, by interengaging pins. The frictional coupling of each disc 19 is overcome once a stop on its circumference engages a peg 10k on a pattern chain and the switch has been closed a predetermined number of times. In a modification of this embodiment the discs are frictionally coupled to a driven shaft but are normally locked by pawls. A cam drum selectively releases the pawls, permitting rotating of the discs.
Patent GB-1406670-A (GB)
Title: Integrated circuit panels
IPC: H01L23/15
Filed: 1972-09-13
Abstract: 1406670 Printed circuits WESTINGHOUSE ELECTRIC CORP 13 Sept 1972 [15 Oct 1971] 42424/72 Heading H1R A printed circuit laminate for integrated circuit chips comprises a ceramic substrate 2 of, e.g. magnesia, beryllia, or alumina admixed with oxides of silicon, calcium, or magnesium; an adherent layer 3 of Mo-Mn alloy and an overlying gold layer 4; portions of the layers having been etched out to give the circuit pattern. Fingers 7 extend from the circuit pattern 8 to substrate edges 9, 10 for connection to other circuitry and a similar ceramic frame 11 is sealed over the fingers; within which integrated circuit chips 12 are mounted on the laminate and connected to the circuit pattern by wires or beam leads 13; a cover 14 being sealed to the top of frame 11. In fabrication a Mo-Mn paste is silk screened on the substrate so that fingers extend from the centre to e.g. two opposed edges and the frame is applied over a layer of glaze with its top coated with Mo-Mn. The whole is fired in a reducing atmosphere, and the Mo-Mn areas are electroplated with gold. Thereafter a photoresist film is applied to the gold within the frame, exposed through mask to U.V. light, developed, and washed, after which the uncovered portions of gold are etched out with a warm aqueous mixture of I, KI, and CH 3 COOK. The remaining gold masks the Mo-Mn alloy for etching in warm H 2 SO 4 +HNO 3 +H 2 O, after which the IC chips are mounted on the substrate with the frame and interconnected to the circuit pattern; and a ceramic or metal cover is soldered or otherwise sealed to the frame. Alternatively the photoresist may be applied direct to the Mo-Mn, exposed, and electroplated with Au on the uncovered areas which, after removal of photoresist, masks the Mo-Mn for etching. Reference has been directed by the Comptroller to Specification 1,289,075.
Patent GB-1534379-A (GB)
Title: Communications system
IPC: H04B17/00
Filed: 1977-10-12
Abstract: 1534379 Adaptive array; communications system MOTOROLA Inc 12 Oct 1977 [22 Nov 1976] 42486/77 Headings H4A and H4L The invention relates to an AM communications system using null steering adaptive array receiving apparatus, Fig. 2, wherein automatically forming the reception lobe, Fig. 1, on the A/C 10 with a null directed at a jammer A/C 12, and a maximum at the communicating A/C 11, is characterized by the transmission of a lower power identification signal from A/C 11 as well as the AM communications signal, the carriers of the two signals being in phase quadrature, Fig. 3. For each antenna of the array the identification signal is extracted at the receiving apparatus (e.g filter 46) and 90 degrees phase shifted to give a replica of the communication signal carrier as a reference signal. The signal from each antenna is split (25) into quadrature components which are so amplitude weighted (32, 37) that the output of a summer 40, receiving all the weighted quadrature pairs equals the reference signal for the maximum (or zero for the interference null). The identification signal may be a PN code and the quadrature relationship of the carriers renders the output of the AM detector in the communications receiver substantially independent of the identification signal.
Patent GB-966978-A (GB)
Title: Improvements in or relating to gas cooled reactors
Inventor: HOSEGOOD SAMUEL BRITTAN
IPC: G21C19/303
Filed: 1960-12-09
Abstract: 966,978. Cyclone separators. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. Dec. 7, 1961 [Dec. 9, 1960], No. 42572/60. Heading B2P. [Also in Division G6] In a gas cooled nuclear reactor having a core containing a number of separate flow paths for gas, ducts connect the flow paths with a flow restricting orifice and means are provided in the ducts for separating solid particles from the gas upstream of the orifice. In Fig. 1 a fuel element mounting is supported in a grid plate 2 and is provided with a central bore 3 through which purge gas flows from the fuel elements to an external purification plant (not shown). To introduce a pressure drop upstream of the purification plant a flow restricting orifice 6 is located in a chamber 4 and to avoid blockage of this orifice the chamber 4 is designed as a cyclone chamber. The bore 3 communicates with chamber 4 through a tangential hole 3a so that purge gas enters the chamber with a swirling motion. The outlet pipe 5 enters the chamber from its lower end and is surmounted by a cone shaped cap 7 supported by a sleeve 8 provided with an external shoulder 8a. A series of radial ports 9 connect the chamber to a clearance formed between sleeve 8 and pipe 5, this clearance being connected at its lower end to a sampling pipe 12 from which a sample of purge gas can be drawn when required. In operation the swirling motion of the gas entering chamber 4 causes any entrained solid particles to fall to the lower part of the chamber where they are trapped against re-entrainment by the shoulder 8a and substantially particlefree gas passes through the orifice 6 to the outlet pipe 5. Specification 966,977 is referred to.
Patent GB-1271198-A (GB)
Title: Improvements in or relating to an apparatus for and method of chilling poultry carcasses
IPC: F25D31/00
Filed: 1970-09-08
Abstract: 1,271,198. Chilling poultry carcasses. SWIFT & CO. 8 Sept., 1970 [20 Nov., 1969], No. 42894/70. Heading F4H. Apparatus for chilling poultry carcasses comprises a trough filled with cooling water and a drum 11 for rotation in the trough to agitate the carcasses passing therethrough; the trough being formed from individual vessel units 10 each having a multi-layer wall structure including an inner surface 30, an intermediate envelope wall 31, a layer of thermal insulation 32 and an outer protective sheath 33. Preferably the inner surface 30, envelope walls 31, and sheath 33 are made of stainless steel sheet for resistance to corrosion and ease of cleaning and maintenance. The envelope wall 31 is spaced from the inner surface 30 by a plurality of small dimples 41 that are uniformly spaced and pressed in the envelope wall 31; such that refrigerant can pass through the passages therebetween. The refrigerant liquid may circulate and absorb heat, or under some conditions may also expand and absorb heat. A liquid inlet header 45 extends the full length of each vessel along the bottom thereof and outlet headers 42 and 43 along top portions of either side of the vessel 10.
Patent GB-938699-A (GB)
Title: Improvements in or relating to processes and apparatus for the production of ultra-pure semi-conductor substances
IPC: C22B41/00
Filed: 1960-12-16
Abstract: Ultra-pure silicon or other semiconductor substances are produced from the gaseous phase by chemical conversion (see parent Specification) wherein the conductivity of the carrier body is initially increased by irradiating the body with radiation having a wave-length of between 1,1 and 12 X 10-3 microns, so that the current flowing through the carrier body causes the temperature thereof to rise to such a value that the voltage across the carrier body decreases with an increase in current therethrough.  The rays may be polychromatic visible or infra-red rays, e.g. white light, or monochromatic rays may be used.  The rays may be produced from an electrically heated filament and are focussed by a cylindrical lens or mirror of thermally resistant material.  The carrier body may be connected to a voltage source of from 220 to 500 volts.  The current may be controlled by a variable resistance means and the temperature of the carrier constant at a point where the current-voltage characteristic of the resistor is at a tangent to, or cuts, that of the carrier body.  The reaction gas may be silicochloroform either alone, or mixed with hydrogen.  Specification 889,192 also is referred to.ALSO:Ultra-pure semi-conductor substances are produced by chemical conversion from the gaseous phase (see the parent Specification) wherein the conductivity of the carrier body is initially increased by irradiating the body with radiation having a wavelength of between 1.1 and 12 X 10-3 microns, so that the current flowing through the carrier body causes the temperature thereof to rise to such a value that the voltage across the carrier body decreases with an increase in current therethrough. The rays may be polychromatic visible or infra-red rays, e.g. white light, or monochromatic rays may be used.  The rays may be produced from an electrically heated filament and are focused by a cylindrical lens or mirror of thermally resistant material.  The carrier body may be connected to a voltage source of from 220 to 500 volts.  The current may be controlled by a variable resistance means and the temperature of the carrier constant at a point where the current-voltage characteristic of the resistor is at a tangent to, or cuts, that of the carrier body.  Specification 889,192 also is referred to.
Patent GB-1438018-A (GB)
Title: Polymers of chloroprene
IPC: C08F36/18
Filed: 1973-09-17
Abstract: 1438018 Polymerization regulators PETROTEX CHEMICAL CORP 17 Sept 1973 [15 Sept 1972] 43456/73 Heading C3P Chloroprene is polymerized in the presence of a regulator of the formula or in which each X, Y and Z is oxygen or sulphur, R<SP>1</SP> is a C 1 -C 8  hydrocarbon radical, R<SP>2</SP> is a C 1 -C 8  hydrocarbon radical or has the formula or R<SP>5</SP> is R<SP>3</SP>R<SP>4</SP>N-CY-Z-, R<SP>3</SP> and R<SP>4</SP> are hydrogen or C 1 -C 8  hydrocarbon radicals provided not both are hydrogen and n is 1-4. Emulsion polymerization is exemplified.
Patent GB-1034350-A (GB)
Title: Improvements in or relating to gummed paper tape
IPC: C09J7/21
Filed: 1964-10-26
Abstract: A gummed tape comprises a strip of paper which is creped lengthwise and coated on at least one side with a water-activatable adhesive. The strip of paper may also be creped crosswise.  One or more strands, yarns or threads of nylon, sisal, hemp, cotton, plastics or other materials may be attached to the tape lengthwise by imbedding them in the water-activatable adhesive or by laminating them between the strip of paper and another strip of paper or like material.  The other strip is preferably paper which is creped lengthwise and coated with water-activatable adhesive.
Patent GB-1045690-A (GB)
Title: Improvements in or relating to pipe coupling
Inventor: LARSSON ROLF
IPC: F16L23/04
Filed: 1963-11-05
Abstract: 1,045,690. Pipe couplings. ALVENIUS INDUSTRIER A.B. Nov. 5, 1963, No. 43579/63. Heading F2G. A pipe coupling comprises a pair of spaced apart pipes 4, 5, a coupling ring 1 surrounding the ends of the pipes and preferably being divided along an axial plane into two halves and a sealing ring 8 of rubber or like resilient material being of such a shape that it fills the space between the pipe ends in its compressed state and is characterized in that the coupling ring has its inner side provided with an annular projection 11 preferably in the form of a ridge having a very obtuse apex angle which is to be positioned opposite the opening 12 between the pipe ends. The sealing ring 8 may have its inner side formed with a flange fitting between the pipe ends or may have a ridge in its inner side, the apex of which is situated between the pipe ends. The ridge 11, of a width substantially equal to the sealing ring, presses the inner surface of the ring 8 into the space between the pipes.
Patent GB-922767-A (GB)
Title: Improvements in or relating to spark erosion machines
Inventor: DIVERS SYDNEY VALENTINE
IPC: B23H7/18
Filed: 1959-12-29
Abstract: 922,767. Automatic control systems for spark erosion machines. LINDERFORT Ltd. Dec. 21, 1960 [Dec. 29, 1959], No. 44060/59. Class 38 (4). A spark erosion machine comprises means including a reversible servomotor responsive to the potential difference between the electrode and workpiece whereby the spacing therebetween is kept constant. Operation of a push-button 47 energizes relay 46 thereby energizing motor 14 to drive pump 13 to fill tank 10 with paraffin from a reservoir 12. When the tank 10 is full a switch 58 closes to energize relay 26 and relay 49 whereupon the potential difference between the electrode 16 and the workpiece 15 is fed to the amplifier 48 where it is compared with a reference voltage, thus controlling a reversible servomotor 17 which moves the electrode 16 relative to the workpiece 15, thus maintain the spacing between them constant at a value determined by the reference voltage. Should the electrode 16 approach the workpiece 15 too closely a limit switch 19 is operated to de-energize relay 49 and energize relay 50 whereupon the amplifier 48 causes the servomotor 17 to retract the electrode 16 until a second limit switch 18 opened to de-energize relay 50, causing the machine to come to rest. Stop, feed and retract push-buttons 57, 55, 56 are provided. The power supply for the machine comprises a high-frequency alternator 20 the field of which is regulated by a carbon pile 27, the alternator being driven by a motor 24. Coarse erosion machining is obtained by supplying the electrode and workpiece over a relay 30 and a halfwave rectifier 23 which is cooled by a fan 29. Fine machining is obtained by supplying the gap over a relay 32 and a rectifier 37, the degree of fineness being selected by the choice of one of the capacitors 39 which is placed in series with resistors 44, 45 across the output of the rectifier 37. The relays 30, 32 are energized by means of a switch 33 and are interlocked one with the other. Specification 922,766 is referred to.