baber/WOPTO huggingface dataset:
Patent GB-1131141-A (GB)
Title: Modulation of microwave energy
Inventor: MEREDITH ROGER JOHN
IPC: G01R29/06
Filed: 1964-09-28
Abstract: 1,131,141. Measuring noise distortion. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Dec.20, 1965 [Sep. 28,1964], No.39390/64. Heading G1U. [Also in Division H3] In a method of determining at a number of different modulation frequencies the deviation of a micro-wave frequency carrier, the deviation being caused for example by noise, a known deviation is achieved by superimposing on the carrier a signal consisting of the carrier, amplitude modulated at one modulation frequency, the phase of the resultant of the first two side bands being adjusted to be 90 degrees out of phase with the carrier. The superimposed signals are applied to a frequency discriminator and narrow band filter, adjusted to centre on the one modulation frequency, to provide an output representing the known deviation of the carrier at the one modulation frequency. The relationship between this output and known deviation is used to determine the deviation at the other different modulation frequencies, the output corresponding to these being derived by adjusting the centre band of the filter. The micro-wave signal, modulated by noise at different frequencies each producing different carrier deviation, is developed at a generator 1 and passed via a waveguide 2 to a frequency discriminator 3 whose output signal has an amplitude proportional to carrier deviation and a frequency which is that of the modulating frequency. The signal is passed via an adjustable tuned filter 4 to an attenuator 5 and meter 6. The filter is adjusted over a range of modulating frequencies and the setting of the attenuator at each frequency to give a constant reading on the meter is recorded. To calibrate the system, energy from the generator is fed via the directional coupler 7 to the amplitude modulator 10 and 90 degrees phase shifter 11, where a signal of known deviation and modulation frequency can be injected via the directional coupler 9 to the discriminator 5. The amplitude modulator 10 consists of a PIN diode connected inside and across the waveguide 2. The diode is such that voltage applied to it reduces its impedance and hence increases the attenuation of a signal passing along the guide. For calibration purposes in the overall system, a squarewave of known frequency and amplitude is applied to the diode, thus amplitude modulating the wave in the guide in a known manner. This is passed to the 90 degrees phase shifter to produce the required phase or frequency modulated signal.
Patent GB-394017-A (GB)
Abstract: 394,017. Calculating gunnery factors; LONG, C. L. and PROBERT, G. 0. C., Research Department, Royal Arsenal, Woolwich, London. June 7, 1926, No. 14315. [Class 106 (i).] An apparatus for determining gun elevations from range table data comprises a sector a marked with range lines b, and a radial arm c graduated in muzzle velocities and provided with " charge plates " e .. e3 set thereon to various velocities for various charge weights and a pointer f, f<2> set to the charge plate for the charge in use, so that when the radial arm is turned to bring the pointer f<1> on a given range line, the angular position of the arm corresponds to twice the angle of elevation of the gun.
Patent GB-1441955-A (GB)
Title: Tape drive system
IPC: G11B23/087
Filed: 1973-08-21
Abstract: 1441955 Tape cassettes SCHLUMBERGER INSTRUMENTS ET SYSTEMES 21 Aug 1973 [21 Aug 1972 6 March 1973] 39466/73 Heading B8M [Also in Division G5] A tape, which may be either endless 76, Fig. 10, or end-to-end 106, Fig. 11, is at least partially wrapped round two hubs 81, 84 or 102, 103, on which two respective arcuate portions of the tape are frictionally engaged by a tensioned elastic endless belt 85 or 113, a zone of the belt being squeezed to oppose its motion so that one portion tends to run faster than another thereby producing a tension in the tape. As shown, the belt runs on a first roller 86 or 111 and a floating idler roller 87 or 112 and is squeezed between the idler roller and the tape hubs. Drive may be applied to the first roller or to an external capstan 120 which drives the tape 106.
Patent GB-1401813-A (GB)
Title: Process for purifying aqueous feed liquid containing dissolved and or suspended solids and apparatus therefor
IPC: B01D61/08
Filed: 1972-08-25
Abstract: 1401813 Reverse-osmosis apparatus DAICEL Ltd 25 Aug 1972 [26 Aug 1971] 39629/72 Heading B1X [Also in Division F2] The inner surface of a cylindrical semipermeable membrane 9 of a reverse osmosis apparatus is cleaned by passing one or more sponge balls back and forth through the membrane, the balls being propelled by fluid flowing through the membrane and the direction of this fluid flow being cyclically reversed, e.g. by a timer 23 controlling valves 1-6. For a first flow direction, only valves 4 and 5 are opened. For the other flow direction, only valves 3 and 6 are opened. Screens 7 and 8 prevent passage of the balls beyond the part of the piping system including the membrane; an inlet/outlet port 11 for the balls communicates with this part. Ways in which the screens may be incorporated in the piping are disclosed, Figs. 5 and 6 (not shown). In a modification of the piping system, Fig. 2 (not shown), only four valves are utilized.
Patent GB-985737-A (GB)
Title: New organic peroxides and their use in the preparation of copolymers of ethylene and ethylenically unsaturated monomers
IPC: C08F4/36
Filed: 1963-10-08
Abstract: The invention comprises 3,3-di-tert.-butyl-peroxybutane carboxylates of the formula <FORM:0985737/C2/1> in which R is a hydrocarbon radical having up to 20 carbon atoms. The compounds are prepared by reacting tert.-butyl hydroperoxide with an alkyl, aryl, aralkyl or cycloalkyl ester of 3-ketobutane carboxylic acid in stoichiometric proportions at 20 DEG  to 35 DEG  C. in the presence of an acid catalyst, e.g. 70% by weight sulphuric acid.  Any water present in the reactants and that formed during the reaction is removed either by distillation, with or without an entrainer, or by using a dehydrating agent, preferably anhydrous oxalic acid which also acts as catalyst.ALSO:A cross-linked copolymer of ethylene and a monomer containing at least one CH2=CH-group is produced using, as initiator, a compound of the formula:- <FORM:0985737/C3/1> in which R is a hydrocarbon group having up to 20 carbon atoms. The cross-linking takes place in the usual way and may be performed in the presence of auxiliary agents, e.g. carbon black, sulphur, tetra-methyl and tetra-ethyl thiuram disulphide, and accelerators, e.g. diphenyl guanidine.  Polymers from ethylene with propylene or vinyl acetate are exemplified.
Patent GB-995742-A (GB)
Title: Fluidising apparatus and method for cooling solid particles and particulate products
IPC: F25D25/04
Filed: 1961-11-06
Abstract: 995,742. Cooling particulate material; cooling peas and berries. FRIGOSCANDIA Ltd. Nov. 6, 1961 [Nov. 7, 1960; June 7, 1961; Sept. 22, 1961], No. 39719/61. Headings F4H and F4U. Apparatus for freezing food particles, e.g. peas and berries, comprises a container 1, means 4 whereby the particles are fed into the container, means for forcing refrigerated air or gas into the container, and means 5 for allowing the particles to discharge from the container and wherein the air or gas fluidizes, freezes and transports the particles through the container. As shown, the food particles form a fluidized bed 3, the lower boundary of which is formed by perforated bottom 2, e.g. of plastics material through which fluidizing air flows. The supply device may consist of a shaking conveyer 27 inclined downwardly towards the container 1 operated by a vibrator 26 and adapted with at least one tongue 28 at its free end which oscillates and spreads the particles so that they are delivered to the fluidized bed 3 in spaced-apart relationship. The tongue is divided into flaps (Fig. 11, not shown) which are equal in size and taper towards their free ends. In a modification, the flaps may be of different shapes. The perforated bottom 2 may be inclined downwards from the supply end (Fig. 2, not shown) and may be designed to impart a direction of flow to the air flowing through it, either by forming the perforations at an angle to the horizontal plane (Fig. 5, not shown) or if the bottom is very thin with vanes (Fig. 6, not shown). The container walls may be inclined outwardly from the bottom and may be provided with perfortions (Fig. 3, not shown). They may also be provided with horizontal baffles 8. Besides the overflow 5, the container may have an outlet 20 containing a valve 21 situated near the perforated bottom 2. The container may be provided with a shaking device imparting longitudinal vibrations thereof, the shaking device may, however, be provided within the fluidized bed. In a further embodiment (Figs. 8 and 9, not shown), the container is designed to have a calm zone near the outlet end and within this zone a blower means directed towards a suction means both connected to the same fan system, and between the suction and blow means a separator for trapping undesirable elements. The space 10 beneath the perforated bottom 2 may be divided into sections, each section having a fan which is supplied with air by a common fan (Fig. 4, not shown). The air driven by one or more fans 17 is adapted to pass through a cooling battery 18 situated downstream of the fans in the air circuit. The container 1 may be equipped with a partition to separate the different processes of " glazing " and freezing.
Patent GB-1393814-A (GB)
Title: Windscreen wiper arms
IPC: B60S1/34
Filed: 1972-08-25
Abstract: 1393814 Windscreen wipers TRICOPRODUCTS CORP 25 Aug 1972 [26 Aug 1971] 39720/72 Heading A4F [Also in Divisions E2, F2] A windscreen wiper assembly comprises a resilient windscreen wiper arm 14 rigid with a bracket 26 pivoted (e.g. by a pin 24) to a hub 20, and a latch assembly 31 for releasably holding the bracket in a "windscreen engaging" position on the hub (possibly engaging the under-side of a head 18 on a drive-shaft 16). The latch assembly may comprise a leaf spring 34 biasing an element 31, pivoted at 32, towards the hub, the end 40 of the element 31 being able to slide over ramps 38a, 38b and under a hook 46 on the hub, the hook then engaging an edge 42 of a square aperture in the element 31
Patent GB-1373213-A (GB)
Title: Process for the manufacture of 1/ 4- dichloroanthraquinone
IPC: C07C67/00
Filed: 1971-08-26
Abstract: 1373213 Preparation of 1,4-dichloroanthraquinone IMPERIAL CHEMICAL INDUSTRIES Ltd 4 Aug 1972 [26 Aug 1971] 40086/71 Heading C2C The invention comprises a process for the preparation of 1,4-dichloroanthraquinone in which a compound of Formula I or a tautomer thereof, is reacted with thionyl chloride. The compound of Formula I may be prepared in situ by heating a mixture of thionyl chloride and 1,4-dihydroxyanthraquinone.
Patent GB-1113601-A (GB)
Title: Improvements in or relating to mineral separation
Inventor: HIRST ARTHUR ALGERNON
IPC: B03B5/34
Filed: 1964-10-02
Abstract: 1,113,601. Centrifugal separators; separating solids. COAL INDUSTRY (PATENTS) Ltd. I Oct., 1965 [2 Oct., 1964; 29 Jan., 1965], Nos. 40283/64 and 4100/65. Headings B2H and B2P. An apparatus for classifying minerals, e.g. raw coal, comprises a cylindrical separating chamber 2 provided with a tangential inlet I for dense medium and mineral particles, with an axially arranged conduit 3 for discharging dense medium and mineral particles of relatively low specific gravity and with an axially positioned circular opening 4 in one end of the chamber for discharging dense medium and mineral particles of relatively high specific gravity, means being provided for controlling the flow of dense medium discharged through the opening 4. The dense medium may be a suspension of magnetite in water. The dense medium and the particles of relatively high specific gravity discharging through the annular orifice 4 enter and involute or, as shown, annular chamber 5 having a tangential outlet conduit 6 tangentially connected to the inlet of a vessel 7 having an axial outlet 8 which may be provided with a replaceable orifice plat whose size can be chosen to alter the discharge quantity. in a modification. Fig. 3 (not shown), the conduit 6, which may be flexible, terminates at an overflow means 10 at a level higher than the annular chamber 5, the quantity discharged being varied by raising or lowering the overflow means 10. In a frrth?r modification. Figs. 4 and 5, the conduit 6 is connected to a hydrocyclone 11 in which further classification takes place. The specific gravity of each of the fractions separated may be altered by admitting dense medium or water through a conduit 15 into the conduit 6 to adjust the specific gravity of the separating medium in the hydrocyclone. Alternatively, dense medium or water may be injected through a tangential inlet into the chamber 5 or through a second connection into the hydrocyclone. Instead of a hydrocyclone, the second separating vessel of the type disclosed in Fig. I or in Fig. 3 (not shown) with the same discharge arrangements may be provided or it may be the apparatus disclosed in Specification 1100343. In a still further modification, the pipe 3 instead of passing through the opening 4 extends from the middle zone of the chamber 2 upwards through the other end of the chamber.
Patent GB-997337-A (GB)
Title: A process to improve thermal stability of polyoxymethylene
IPC: C08G2/00
Filed: 1963-10-11
Abstract: Polyoxymethylene is acylated with a compound having in its molecule at least one nitrogen atom having attached thereto at least two carboxylic acyl groups or one carboxylic acyl and at least one thiocarbonyl group.  The acylating agent may have the formula <FORM:0997337/C3/1> where X is a carbonyl or thiocarbonyl, R is an alkyl, cycloalkyl, aryl, alkenyl or heterocyclic radical which may be substituted or not, R1 is R or alkoxy carbalkoxy, substituted amino or substituted carbamoyl, R2 is R, or hydrogen, carboxylic acyl or substituted amino and R1 and R2 may together form a heterocyclic ring with the nitrogen atom and X.  Numerous examples are given including diacetamide, dibenzanilide, N-acetyl-caprolactam, N-acetylurethan, N-acetylisatin, tetra-acetyl-hydrazine and N-acetylthiohydantoin. The usual catalysts may be present.
Patent GB-1457608-A (GB)
Title: Reduction process
IPC: C07D215/38
Filed: 1974-09-17
Abstract: 1457608 Reduction process IMPERIAL CHEMICAL INDUSTRIES Ltd 2 Sept 1975 [17 Sept 1974] 40417/74 Heading C2C [Also in Division C4] Water immiscible or sparingly water soluble organic compounds containing reducible groups are reduced by contact with an aqueous solution of a formic acid salt in the presence of a hydrogenation catalyst and a surface active agent.
Patent GB-1087950-A (GB)
Title: Proximity detectors
Inventor: GRAY FREDERICK MARTIN
IPC: H03K17/95
Filed: 1965-09-24
Abstract: 1,087,950. Electro-physical measurement; indicating apparatus. ENGLISH ELECTRIC CO. Ltd. Sept. 21, 1966 [Sept.24, 1965], No. 40753/65. Headings G1J and G1N. [Also in Division H3] The pointer of a meter (or a vane associated therewith) travels through an air-gap in the magnetic circuit of an oscillator coil Fig. 1 (not shown) to vary the amplitude of the oscillator output to effect an alarm or control function when the pointer lies outside a selected range. Separate coils may be used at the up and lower limits Fig. 3 (not shown) Alternatively a toothed wheel on a watt-hour meter may rotate in the gap to operate a pulse-counter. Oscillator comprises a tuned coil 4 and feedback coil 3 mounted on a C-shaped magnetic core and connected with transistor T 1  to work in "class C" with the bias stabilized by a Zener diode D1, and negative feedback provided by resistor R1 which is adjustable to vary the sensitivity of the oscillator to the change in "Q"-factor of the coil due to the passage of the pointer through the gap in the C-core. Transistor switching circuit comprises a complementary pair T 2 , T 3 , with a relay RL and reverse-voltage limiter diode D2 in the collector circuit of T 3 . The "switching point" of T 2  is adjusted to match the oscillator output by varying the bias supply from R6.
Patent GB-956965-A (GB)
Title: Containers for fragile articles
Inventor: PORTER PHILIP SIMPSON
IPC: B65D5/50
Filed: 1959-12-01
Abstract: 956,965. Cases for fragile articles. B.X. PLASTICS Ltd. Feb. 6, 1961 [Dec. 1, 1959], No. 40846/59. Heading B8P.  A case comprises an article supporting pocket of flexible material, the pocket being in contact with the walls or base only where it is anchored to supporting points. The pockets 4 are thinner than the adjacent portions of the sheet from which the pockets are formed. The pockets may be vacuum formed in a sheet extending across the open top of the box and secured to the tops of the side walls. In the embodiment shown, the pockets 4 in the flexible sheet are supported by members 6 which engage the under surface of the sheet. The flexible sheet may be fixed by adhesive or may be mechanically fixed or heat-sealed to the walls 1. The flexible sheet may be of polyethylene, polypropylene, polystyrene, toughened polystyrene, polyvinyl chloride, polyvinylidene chloride, cellulose acetate, cellulose triacetate or rubber hydrochloride. The thickness of the pockets may be between 0.011 and 0.0005 inch. A lid formed in the same manner and having complementary pockets may be provided; an article is then wholly enclosed in pockets in the body and lid portions.
Patent GB-1088181-A (GB)
Title: Fasteners or couplings and units therefor
IPC: F16B5/07
Filed: 1964-10-07
Abstract: 1,088,181. Straps. MINNESOTA MINING & MANUFACTURING CO. Oct. 7, 1964 [Oct. 7, 1963], No. 40938/64. Heading A4X. [Also in Divisions B5, E2 and F2] A strap for wrapping round one or more objects comprises a base and a plurality of studs projecting from each face of the base, the studs of one face adjacent one end of the strap being forced into engagemeht with the studs of the other face near the other end of the strap after the strap has been placed about the object(s).
Patent GB-1408431-A (GB)
Title: Impregnation of corrugated board
IPC: B65D81/00
Filed: 1972-09-05
Abstract: 1408431 Coating apparatus INTERNATIONAL PAPER CO 5 Sept 1972 41196/72 Heading B2L Bundles of corrugated board each having two sheets separated by a fluted member are filled with impregnating liquid by mounting them on a perforate conveyor 60 comprising the bundles and feeding them with all the fluted members aligned passing the impregnating liquid through them and subsequently drying the thus treated boards. As shown in Fig. 12 the bundles are supported on a series of perforate stainless steel band conveyors 60 and are driven forwards by a series of bands 61 all of which are driven at the same speed from a motor 55a. Upon frictionless bands 62a, 62b which may be replaced by frictionless plates are mounted on an upper frame 300 which is adjustable so that these bands form a trough with the upper surface of the boards and rollers 93 on one set of these bands are moveable to compress the bundle of boards to prevent medium from passing down the outer surface of the boards. Impregnating material from a tank 123 passes to a second tank 126 and runs down plates 133 to the trough at the top of the boards. The gaps between plates 133 are adjustable. Excess material is collected and returned to tank 123 which has a constant level device 124. The boards subsequent a dryer 160 where heated air is passed through in alternate directions from a manifold arrangement. From the heater the boards pass through a curing arrangement which may be a heater of similar form to the dryer. In one arrangement the used heated air is passed to the inlet of the curing arrangement to be used again. The treated boards are finally sprinkled with water to prevent them from cracking due to their dryness.
Patent GB-1380797-A (GB)
Title: Machine for pelletization of pastelike materials
IPC: B01J37/00
Filed: 1972-09-06
Abstract: 1380797 Moulding catalyst granules N E KAZAKOV S S SHIPITSIN V A MINCHENKO I M KUDRYAVTSEV V A ZIMIN and B A PERVITSKY 6 Sept 1972 [26 Jan 1972 12 April 1972] 41265/72 Heading B5A A plurality of strands 8 of pastelike material are each sequentially fed from a rotating die head 5 into the nip of a pair of differing diameter rotating rollers 7, having a plurality of cooperating grooves which sever the strands into pieces which are rolled in the grooves into spherical granules, e.g. for use as chemical catalysts. The process is controlled by independent drives to effect each of rotation of the rollers 7, rotation of the die head 5, and the rate of delivery of material to the die head 5 by the extrusion worm 4 as shown. In the embodiment the material is fed to the worm from a hopper 1 containing a pair of rotary Z blades 2. The extrusion orifices 12 are defined by inserts 11 in a plate 10 connected to a shaft 13 effecting the rotation of the die about a bearing 15, the shaft 13 passing through a tube 6 through which the material is delivered to the orifices 12 from the screw 4. Ingress of extruding material to the bearing 15 is prevented by a threaded bushing 14 on the pipe 6 defining, with the surrounding part 9 of the rotating head 5, a cavity 16 in which stagnation of material is prevented by an orifice 18 whereby material is continuously delivered from within the pipe 6 into the cavity 16.
Patent GB-874808-A (GB)
Title: Improvements relating to composite curly filaments
IPC: D02G1/18
Filed: 1958-12-22
Abstract: 874,808. Paper containing composite filaments. OWENS-CORNING FIBERGLAS CORPORATION. Dec. 22,1958 [Dec. 30, 1957], No. 41367/58. Drawings to Specification. Class 96. [Also in Groups IX and XXIII] Composite curly filaments comprising two components made of compatible heat-softenable materials of which at least one is glass, the materials of the respective components having different coefficients of expansion and the components being in eccentric side-by-side abutting relationship, are combined with other fibres, e.g. cotton, in making paper. Preferably the components of the filaments are glasses of different compositions, but they may also be glass and metal, e.g. aluminium, lead, or zinc, or glass and alloys of such metals.
Patent GB-1481872-A (GB)
Title: Logging method and system
IPC: G01V1/42
Filed: 1974-09-24
Abstract: 1481872 Well-logging HUGHES TOOL CO 24 Sept 1974 41523/74 Heading G1G A borehole is logged by generating an acoustic signal in the borehole, the signal having at any one time a single dominant frequency, coupling the signal with a selected acoustical compliance having walls partially formed by a portion of the borehole, detecting characteristics of the generated signal waveform, and recording the characteristics as a function of depth of the portion. In a logging-while-drilling embodiment, mud pumped down the drill string actuates a fluidic oscillator of known type, details given, positioned just above the drill bit. The oscillator output amplitude and/or frequency depends on the compliance of a cavity defined by the borehole wall portion between the bit and the oscillator; hence it depends on the earth formation type and the condition of the wall. The acoustic signal is sensed at the earth surface by a transducer coupled with the drill string or mud, or by summing the outputs of surface geophones. The sensed signal is recorded and is compared visually or automatically with a reference signal. Alternatively the logging may be done in a ready-drilled hole, using another known type of acoustic source.