baber/WOPTO huggingface dataset:
Patent GB-1220594-A (GB)
Title: Organopolysiloxane emulsions
Inventor: EVANS JOHN IDRIS
IPC: C08K5/07
Filed: 1967-06-14
Abstract: 1,220,594. Aqueous diorganopolysiloxane emulsions. MIDLAND SILICONES Ltd. 7 June, 1968 14 June, 1967], No. 27488/67. Heading C3T A composition is prepared by emulsifying in water a diorganopolysiloxane wherein at least 50% of the Si-bound organic radicals are methyl radicals, then mixing the emulsion with a watermiscible aliphatic ketone and/or monohydric alcohol, with or without further water, to give 0À1-1 parts of alcohol or ketone per part by weight of water in the final emulsion. There are preferably 1À95-2À05 organic radicals per Si atom in the polysiloxane; besides the methyl radicals there may be present e.g. ethyl, propyl, hexyl, octadecyl, vinyl, allyl, cyclohexenyl, phenyl, naphthyl and tolyl radicals; up to 10% of the radicals may contain e.g. halogen, amino, sulphate or hydroxyl substituents; the viscosity preferably is in the range 350-70,000 cs. at 25‹ C. The emulsification is preferably carried out in the presence of an emulsifier, e.g. polyoxyethylenated trimethylnonyl alcohol, stearic acid, or oleic acid, or sodium alkylaryl polyether sulphates, or sorbitan monostearate, or polyvinyl alcohol. The solvent may be e.g. methanol, ethanol, isopropanol or acetone, and is preferably used in amount sufficient to approximate the density of the aqueous phase to that of the disperse phase. The product suitably contains 5-35 wt. per cent of polysiloxane. Conventional additives e.g. sodium benzoate as a corrosion inhibitor may be added. In examples trimethylsilyl end-stopped dimethylpolysiloxanes are emulsified i.p.o. a polyoxyethylene oleyl ether in water and water and ethanol or acetone is added; sodium benzoate and optionally a bactericide is also present. Uses.-Fibre lubricants, mould release agents, antifoams.
Patent GB-831088-A (GB)
Title: Improvements in or relating to air-conditioning apparatus
IPC: F24F1/0358
Filed: 1956-09-07
Abstract: 831,088. Air conditioning apparatus. CARRIER ENGINEERING CO. Ltd. Sept. 7, 1956 [Dec. 16, 1955], No. 27508/56. Class 137 [Also in Group XIII] Air-conditioning apparatus comprises a casing 2 with an air-inlet 27 in the bottom, a fan 10 for drawing air upwardly through the casing and discharging it at 11, a refrigerating plant consisting of a compressor 20, an external air-cooled condenser, and finned evaporator coils 14 which latter are placed in the path of the rising air to cool the same. The air is constrained to pass in heat-exchange relationship with the evaporator by baffles 16, 17, 18, the water separated for the air on cooling falling from coil to coil, and from the bottom edges of the baffles, into troughs 55, formed in a tray 23, which discharge, through strainer holes, into an exit trough 24. The tray 23 is made of non- heat conducting material, e.g., polystyrene, to avoid condensation of water on the underside thereof. Such condensation is undesirable since the water would drop on the filter 25 and render it useless. The end baffle 18 is pivotally mounted at 45 to swing from the position, shown in Fig. 4, in which a part of the air by-passes the coils 14, to the position in which the baffle abuts against a stop 52, the whole of the air then being constrained to pass around the coils 14. The baffle is held in either position by a C-shaped spring 49 which snaps over the dead-centre as the baffle is moved from one position to the other. The face of the baffle 18 is lined with felt 42 which makes a seal with the stop 52 and also hangs into the trough to make a seal therewith. If the baffle 18 is positioned to allow some air to bypass the evaporator, the temperature of the evaporator is lowered and the overall removal of water from the air is increased. The casing stands upon a frame 7 holding louvres, and may be surmounted by a plenum chamber having a discharge grille in its front face. Alternatively, the fan discharge opening may be formed in one leg of an L-sectioned plate which is secured over an opening in the casing 2 either with the discharge opening in the vertical face of the casing, or by reversing the L-plate, in the top of the casing, to produce a horizontal discharge or a vertical discharge respectively. The condenser may be water-cooled and enclosed in the casing 2. Specification 828,082 is referred to.
Patent GB-691775-A (GB)
Title: Improvements in and relating to planetary gearing
IPC: F16H1/28
Filed: 1951-11-23
Abstract: 691,775. Toothed gearing. BRITISH THOMSON-HOUSTON CO., Ltd. [General Electric Co.]. Nov. 23, 1951, No. 27539/51. Class 80 (i). In epicyclic gearing employing double helical teeth and comprising a driving or driven sun gear 13, a floating reaction ring gear 26, and a driven or driving planet carrier 7, each planet 17 rotates on a sleeve 16 mounted on bearing bushes on a radial pin 22 which is held in a stud 18 bolted and keyed to an extension of the carrier 7 so that each planet may turn, to a limited extent, about a central radial axis and thereby avoid tooth misalignment should the carrier become distorted under heavy .load. The carrier 7 is generally triangular to support three planets and is recessed to support a bearing 12 for the sun gear shaft, which is also supported by a bearing 8 in the housing end plate 4. Spacer rings are interposed between the gear 13 and the thrust surfaces of the bearings 8, 12. The carrier shaft is supported by journal and thrust bearings in a, housing portion 1a. The double helical ring gear 26 may be formed in two rings bolted together, and is floatingly held against rotation by a double-toothed sleeve 30 coupling external teeth on the gear 26 with a fixed toothed ring 31. It is stated that the flexible connection between the stud 18 and sleeve 16 may comprise a spherical or a toothed coupling. Specification. 691,776 is referred to.
Patent GB-1512513-A (GB)
Title: Packaging casings and blanks therefor
IPC: B65D5/02
Filed: 1974-06-21
Abstract: 1512513 Cartons JOHN WADDINGTON Ltd 2 June 1975 [21 June 1974] 27559/74 Heading B8P A carton, similar to that described in Specification 1,317,667 in which the carton body has the appearance of being twisted, has axial portions at its top and bottom edges formed by fold lines 16A, 18A, the blank from which the carton is folded also having two axial fold lines so that the carton can be folded to flat form. This construction facilitates the folding of the blank on a machine. The blanks has a glue tab along one side edge to form the usual manufacturer's joint. The carton may be of hexaagonal, triangular, square, pentagonal, septagonal, or octagonal shape. The carton ends may be closed by flaps for example, of rosette or may have ridges to receive separate caps.
Patent GB-235465-A (GB)
Title: Improvements in loud speakers for radio receiving apparatus and the like instruments
IPC: H04R13/02
Filed: 1924-11-18
Abstract: 235,465. Edison Swan Electric Co., Ltd., and Davis, W. J. Nov. 18, 1924. Telephones.-In receivers for loud-speakers of the kind in which the diaphragms and magnets are relatively adjustable, the diaphragm is mounted to rock about a fixed axis. As shown, the diaphragm 3 is mounted on three equidistant pillars 4, 5, 6, of which the pillars 4, 5 are stationary and the pillar 6 is movable, and comprises a screwed portion 11 engaging with the diaphragm holder 9 to vary its distance from the base 1, on which the magnet system is mounted, so that the diaphragm is rockable about a fixed axis formed by a line joining the pillars 4, 5. A sleeve 20 limits the inward movement of the diaphragm, which is controlled by springs 14, 15, 16.
Patent GB-1442919-A (GB)
Title: Process for purification of phosphoric acid
IPC: C01B25/234
Filed: 1974-06-21
Abstract: 1442919 Phosphoric acid; purification MITSUBISHI CHEMICAL INDUSTRIES Ltd 21 June 1974 [21 June 1973] 27785/74 Heading C1A Crude wet process phosphoric acid is purified of arsenic by treatment with hydrogen sulphide (which may be supplied as a gas or generated in situ) in the presence of activated carbon. This treatment may be preceded by other processes designed to remove other contaminants from the crude acid, e.g. the organic substance content may be reduced to less than 700 p.p.m. (calculated as carbon) either by calcining the phosphate rock from which the crude acid is obtained or by treating the crude acid with activated carbon; silicon and fluorine may be removed together as hydrogen fluoride and silicon tetrafluoride by heating or by steamstripping; sulphur trioxide may be precipitated as sulphates; and heavy metal contaminants may be removed in an organic extraction stage.
Patent GB-978496-A (GB)
Title: Magnetic recording and play-back apparatus
IPC: G11B5/86
Filed: 1963-07-15
Abstract: 978,496. Magnetic recording and playback systems; contact printing. INTERNATIONAL BUSINESS MACHINES CORPORATION. July 15, 1961 [July 17, 1962], No. 27904/63. Heading G5R. In a magnetic recording and playback apparatus, in which information is recorded on and played back from a magnetic record tape 10 by one or more transducers 16, 23, 24 operatively positioned with respect to a magnetic transfer drum 12, by contact printing to and from the record tape in the presence of a magnetic bias field, at least one of the media is magnetically anisotropic and the magnetic bias field is applied during recording in a direction in which the coercivity of the record tape 10 is less than that of the drum 12, and during playback in a direction in which the coercivity of the drum is less than that of the record tape. The tape 10 is isotropic whilst the surface of drum 12 is magnetised parallel to its surface. Whilst recording, erase head 23 is operated and information is transferred to the drum by transducer 16. The information on the drum is transferred to the tape 10 with the aid of a transverse bias field produced by the transducer 19. During playback, information is transferred from the tape 10 to the drum with the aid of a longitudinal bias field produced by the transducer 21, played back from the drum by transducer 16, and erased by the head 24. In a modification, Fig. 3 (not shown), the drum 12 is replaced by an endless magnetic tape, and in other modifications the tape of Fig. 1 may be replaced by sheets or unit record cards, held to the drum 10 by rollers 14,15.
Patent GB-1268623-A (GB)
Title: Improvements relating to conveyor apparatus
Inventor: COKE GERARD JOHN
IPC: B65G21/20
Filed: 1968-06-12
Abstract: 1,268,623. Feeding and delivering sheets. G. T. COKE. 12 June, 1969 [12 June, 1968], No. 27966/68. Heading B8R. Feeding sheets.-Sheets are separated from a pile 40 by a conveyer 13 comprising a plurality of imperforate endless belts 32 trained around suction box 20 provided at its lower surface with a multiplicity of suction nozzles positioned between the lower runs of adjacent belts. Suction is applied to box 20 by a fan 12 through ducts 21 and 22. The pile is raised on an hydraulically operated scissors lift 41 and intermittently lowered to permit forwarding of a gripped sheet. Delivering sheets.-A conveyer similar to that described above, comprising belts 51 co-operating with suction box 50, is used to carry sheets to a position above a stack, whereupon the suction is cut off by butterfly valves 60 to deposit the sheets. The receiver may comprise a scissors arrangement similar to arrangement 41.
Patent GB-931752-A (GB)
Title: Improvements in rotary-head magnetic recording and reproducing equipment
Inventor: BALDWIN JOHN LEWIS EDWIN
IPC: G11B5/53
Filed: 1960-08-15
Abstract: 931,752. Rotary-head magnetic recording &c. BUSH & RANK CINTEL Ltd. Aug. 15, 1961 [Aug. 15, 1960], No. 28165/60. Class 40 (2). The heads 2-5 of a conventional transversetrack magnetic tape-recorder, besides their usual record/playback functions on a tape T, are arranged to pass a radial coil 7 and a tangential coil 8. During recording the usual FM carrier is picked up by the coils producing outputs whose envelopes are A and B respectively. Synchronous detection means of known type produces an output C which crosses a zero line at the instant 14, when each successive head is aligncd with the coils 7, 8. A pulse may be derived from the change-over of output polarity. For playback, a signal fed to the coil 8 may be compared with the output of a corresponding head or a direct current in the coil 7 may produce a head output corresponding to C.
Patent GB-389759-A (GB)
Title: Improvements in or relating to pump arrangements for hot water circulating systems
IPC: F24D3/02
Filed: 1932-10-10
Abstract: 389,759. Centrifugal pumps. HOLDEN & BROOKE, Ltd. and BROOKE, R. W., Sirius Works, West Gorton, Manchester. Oct. 10, 1932, No. 28185. Addition to 377,229. [Class 110 (i).] In a hot-water heating system wherein a circulating-pump 1 is used in a byepass across a non-return valve 9 communicating with the hot-water pipe, the pump is automatically isolated when not in use by independently movable valves 5, 9 in the inlet and outlet respectively. When the pump is idle the outlet valve 9 seats against the port 8 by the action of a spring 12. Insufficient difference in pressure at opposite sides of the valve 5 ensures the latter remaining open. The pump is completely isolated by manual closing of the valve 5.
Patent GB-1279950-A (GB)
Title: Rotary tabletting machines
Inventor: FOSTER ERIC
IPC: B30B11/08
Filed: 1968-07-25
Abstract: 1279950 Feeding rotary tabletting machines MANESTY MACHINES Ltd 14 July 1969 [25 July 1968] 28185/71 Heading B5A In a continuous rotary turret tabletting machine wherein a plurality of hardened metal dies 23, each containing a lower punch 24, are provided around a horizontal table 21 of the rotary turret 12, and corresponding aligned upper punches 27 are provided in a horizontal turret flange 26, at last part of the particulate tabletting material is fed to the dies from an annular enclosed space 34 which is defined, within the circle of dies 23, between the turret flange 26 and the table 21, and from which the particulate tabletting material rotating with the turret 12 is deflected over and into the dies 23 by a stationary deflector comprising a tongue 53 and an attached plate 52 inclined towards the table 21 in the direction of rotation thereof. The outer boundary of the space 34 is defined by a stationary wall 35 comprising spaced apart strips 36 and 37, between which locate nylon scrapers 41, 42 which are respectively spring urged against the underside of the flange 26 and the upper face of the table 21, the wall 35 being relieved in the lower part thereof along an arcuate extent at 50 where the upper part is attached to a feed housing 45 which feeds material to the space 34 and which is also provided with a feed opening 49 extending over a number of dies 23 to feed material thereto. In the described embodiment, wherein two moulding cycles are performed for each 360 degrees rotation of the table, there is provided a diametrically opposed pair of feed housings 45, and two diametrically opposed pairs of opposed pressure rolls 32, 33, which respectively actuate the upper and lower plungers 27, 24 for a final moulding compression of the material, the plungers 27, 24 otherwise being guided by camtracks 29, 28 so that, on the approach to a feed housing 45, the upper and lower plungers 27, 24 are raised respectively to clear the housing 45 and to locate the moulded tablet level with the table upper surface for deflection by a deflector 54 into a shoot 55. During passage beneath the deflector plate 52 the lower punch 24 is moved downwards and then, when the die 23 communicates directly with the opening 49, is slightly upwardly displaced prior to material being cleared from the surface of the dies 23 by scrapers 57, 58 in the housing 45. After leaving the housing 45, the powder in the dies 23 is precompressed between the punches 27, 24, prior to the final compression applied from the rolls 32, 33. It is stated that the space 34 may be provided with outwardly projecting vanes to assist movement of the material therein with the turret 12. The turret 12 is rotated by the engagement of an interior gear-ring 20 thereof by a gear 19 which is driven, via a worm gear 17, from a motor 13.
Patent GB-834712-A (GB)
Title: Improvements in or relating to cyclones
Inventor: GLOVER SIDNEY THOMAS
IPC: B04C5/15
Filed: 1957-09-06
Abstract: 834,712. Centrifugal separators. IMPERIAL CHEMICAL INDUSTRIES Ltd. July 25, 1958 [Sept. 6, 1957], No. 28201/57. Class 23 A hydrocyclone for classification or separation has at the outlet for underblow a tubular extension provided with a lateral perforation, air being drawn in through the perforation to prevent blocking of the outlet during variations of feed. As shown, the outlet 5 is connected to a Y-shaped fitting 6, and the exit end of the overflow outlet 4 is below the outlet 5. Dimensions of and performance figures for the hydrocyclone are given in the Specification.
Patent GB-191506-A (GB)
Title: Improvements in or relating to cabinet gramophones
IPC: G10K13/00
Filed: 1921-10-24
Abstract: 191,506. Cooper, C. H. St. J. Oct. 24, 1921. Sound magnifying and directing appliances.-A cabinet gramophone contains a horn d within an outer horn d<1>. The inner horn is supported solely by a block e fixed to the back of the cabinet. The sides f<1> of the mouth of the outer horn are flat, as shown in Fig. 2, or are curved to correspond to the curved sides g of the inner horn. A sliding sound detector h is provided above the mouth of the horns.
Patent GB-969531-A (GB)
Title: Superconductor circuits
IPC: G06F9/32
Filed: 1961-08-03
Abstract: 969,531. Commutators. INTERNATIONAL BUSINESS MACHINES CORPORATION. Aug. 3, 1961 [Aug. 29, 1960], No. 28251/61. Heading G4A. [Also in Division H3]  A superconductive transmission line acts as a control conductor to superconductive lines arranged along its length, the whole circuit forming a commutator. The transmission line consists of a superconductive shield 12 separated from superconductive paths 26 and 28 except at the ends 26A, 28A by an insulator 13. A current source 18 is connected between terminal 20 of paths 26, 28 and terminal 32 on insulator 12. When source 14 is operated portion 38 of the line is sent resistive and the entire current from source 18 is sent to path 26. Source 14 is switched off and source 16 is operated. This sends section 42 (beneath conductor 41) of path 26 resistive and a sharp wavefront is transmitted-down the transmission line. The control conductor sections 51c to 56c of the transmission line are of different sizes requiring different values of current to send the associated gate conductors 51G to 56G resistive. In this way by controlling the size of the current from source 18 the conductors go resistive in different sequences. The resistance introduced into path 26 by source 16 equal to the characteristic impedance o. the tramsmission line. The current transmitted down the transmission line is half the magnitude of the current from the source 18. On reflection at the shorted termination 28A the current in the line builds up to the value of the current from the source. The value of the source current can thus be chosen so as to send resistive some of the gate conductors before reflection and the remainder after reflection. The Specification describes various other forms of transmission line including kinds in which a pulse once generated is reflected between the ends of the line for long periods of time due to there being no D.C. losses in the superconductive line.
Patent GB-655872-A (GB)
Title: Improvements in or relating to automatic tuning apparatus for receivers of the signal-seeking type
IPC: H03J7/30
Filed: 1946-09-20
Abstract: 655,872. Automatic frequency and tuning control systems. SYLVANIA ELECTRIC PRODUCTS, Inc. Sept. 20, 1946, No. 28222. Convention date, April 13, 1945. [A Specification was laid open to inspection under Sect. 91 of the Acts, Sept. 20, 1946.] [Class 38 (iv)] [Also in Groups XXXVII and XL (c)] Fig. 9 (Cancelled) shows an A.M.F.M. receiver of the signal seeking type (see Group XL (c)) having in addition an A.F.C. arrangement. The receiver comprises an H.F. and converter stage 102, an I.F. amplifier 107, an A.M. detector 108 and a limiter 109 followed by a discriminator, a switch 110 coupled to the wave changer 110a selecting the output to be applied to the audio stage 113. The discriminator comprises two circuits tuned respectively on either side of the carrier and connected to oppositely-arranged diodes. Each circuit produces two D.C. outputs and the corresponding outputs are combined through resistors 133, 134 and 131, 132 to produce in leads 190 and 191 the familiar S-shaped discriminator characteristic, but of opposite polarity in each lead. If search button 163 is momentarily depressed contacts 167, 168 connect +B to the grid of a thyratron 141 through relay coil 145. This relay operates due to the current which now flows in valve 137 and is held when the button is released, by its contacts 146, 147. Thyratron 141 fires and current accordingly flows during positive halfcycles only of the supply through half of winding 153 of a motor 150 and the motor revolves slowly, driving the tuning controls. As a station is approached the voltage on lead 190 rises negatively until it cuts off valve 137 and releases the relay. At the same time the voltage on lead 191 has risen positively to a peak maintaining thyratron 141 conductive, but, as the correct tuning point gets nearer the voltage begins to fall until at the discriminator cross-over point it is zero and the motor stops. Should any overshoot or drift occur the voltage on lead 191 becomes positive, rendering thyratron 142 conductive to drive the motor in the opposite direction. If a particular station is desired one of selector buttons 164-166 is depressed, say button 166, completing the circuit for the left-hand half of the motor winding through the normally-closed contacts 180, 181 at contacts 174, 175. The motor, now operating on both half-cycles of the A.C. supply drives rapidly until a cam 187 which is adjusted approximately to correspond to the desired tuning position opens contacts 180, 181 and allows the tuning to the nearby desired station to be completed under the control of the discriminator as described previously.
Patent GB-483158-A (GB)
Title: Improvements in and relating to public service vehicles
IPC: B62D47/02
Filed: 1936-10-17
Abstract: 483,158. Vehicle seating -arrangements. LEYLAND MOTORS, Ltd., and NIXON, C. B. Oct. 17, 1936, No. 28289. [Class 103 (ii)] [Also in Group XXXI] The front passenger seat 16 on the near side of a motor road vehicle is of reduced width in order to give access from a side entrance 10, in advance of the bulkhead 4, to a central gangway.