baber/WOPTO huggingface dataset:
Patent GB-911886-A (GB)
Title: Process for the production of photographic silver halide emulsions
IPC: C08F8/34
Filed: 1961-02-07
Abstract: 4-Vinyl pyridine and acrylic acid are copolymerized in aqueous solution with potassium persulphate as catalyst, and the product is sulphonated with concentrated sulphuric acid and cadmium chloride.  A sulphonated copolymer of 4-vinyl pyridine and styrene is similarly prepared.  Reference is made to copolymers of 4-vinyl pyridine mono- or disulphonic acid with acrylic acid, methacrylic acid, acrylates, methacrylates, methylchloroacrylates, acrylonitrile, methylacrylonitrile, acrylamide, styrene sulphonic acid, or divinyl benzene sulphonic acid, or with mixtures of acrylic acid and acrylates, acrylonitrile or styrene sulphonic acid.
Patent GB-1465736-A (GB)
Title: Moulded hollow article
IPC: B29C65/00
Filed: 1974-01-31
Abstract: 1465736 Foam-filled mouldings HOECHST AG 31 Jan 1974 [31 Jan 1973] 04571/74 Heading B5A In a single-piece hollow moulding having a cavity, the cavity contains an open cell material, the moulding also having an orifice too small for insertion of the open cell material. The moulding is preferably made by blow-moulding, e.g. a polyolefin such as low pressure polyethylene, the open cell material being a foamed polyether or polyurethane, a foamed rubber or natural sponge. As shown in Fig. 1, resilient open cell material 3 is held in a compressed state on an auxiliary mandrel 4 on top of a blowing and calibrating mandrel 5, a tubular parison 2 is extruded thereover from extrusion nozzle 1, blow-mould 6 closed therearound and the parison blow-moulded. The material 3 is then allowed to expand. The open cell material is held in the compressed state by a strip or tube of flexible sheeting, tubing or fabric wound or closed thereon and the material may then be frozen to maintain compression after the sheeting, tubing, or fabric is removed, either before or after moulding, e.g. by solvent. Expansion is then effected by warming, e.g. with hot air. The article may be a fuel tank.
Patent GB-470703-A (GB)
Title: Process for the manufacture of phthalocyanines
IPC: C09B47/067
Filed: 1936-02-14
Abstract: Phthalocyanines are prepared by heating phthalonitriles substituted by alkoxy or aryloxy groups or in which the benzene nucleus is connected in two positions to a further aryl residue in each case by an oxygen atom, with metals or metal compounds with or without diluents.  Examples of starting materials are 4-ethoxy-phthalonitrile, prepared by subliming sodium 5-ethoxy-2-cyanobenzene - 1 - sulphonate with potassium ferrocyanide; 4-methoxyphthalonitrile; the 1-phenoxy-3 : 4-phthalonitrile obtained by heating with potassium ferrocyanide the sodium salt of 3-phenoxy-2-cyano-benzene-sulphonic acid; 2 : 3-dicyanodiphenylene dioxide, prepared by subliming the sodium salt of 2-cyano-diphenylene dioxide-3-sulphonic acid with potassium ferrocyanide.  Starting materials which are converted into phthalonitriles of the types specified during the course of the reaction may also be used.  The phthalocyanine products can be pasted from cold sulphuric or ethyl sulphuric acids, and can be sulphonated and then converted into lakes by treatment with polyvalent metal salts or lake-forming amines. They may be used for graphic wall-paper printing-and for colouring cuprammonium or viscose artificial silk.  Specification 410,814 is referred to.
Patent GB-1085393-A (GB)
Title: Variable delivery reciprocating pumps
Inventor: SPENCE PETER
IPC: F04B49/12
Filed: 1964-02-04
Abstract: 1,085,393. Fluid-pressure servomotor systems. DOWTY TECHNICAL DEVELOPMENTS Ltd. Jan. 29, 1965 [Feb. 4, 1964], No. 4612/64. Heading G3P. [Also in Division F1] In a radial piston pump having a cam-ring pivotably adjustable to vary the piston stroke (see Division F1), the cam-ring is adjusted by a control member 120 subjected to the pressure in the system supplied by the pump. The system pressure at connection 127 acts directly on the right-hand end of member 120 and via passages 131, 132, 142 on the left-hand end of the member, a spring 129 biasing the member to its full-stroke position shown. Above a predetermined level, the system pressure opens a pilot valve 136 to connect the left-hand end of member 120 to the pump casing via ports 139, 140, so that the system pressure acting on the right-hand end of member 120 moves the member leftwards to reduce the stroke. When the system pressure has dropped sufficiently, valve 136 closes and the pressures on either side of member 120 equalize, permitting spring 129 to return member 120 to its full-stroke position. Member 120 has frusto-conical faces 124, 125 engaging a gearlike tooth 119 of involute form on the cam-ring.
Patent GB-1217904-A (GB)
Title: Use of modulated radiation in holography
Inventor: NELSON RICHARD LLOYD
IPC: G03H1/06
Filed: 1968-01-30
Abstract: 1,217,904. Holography. HOLOTRON CORP. Jan.30, 1968 [Feb.14, 1967], No.4613/68. Heading G2J. A laser, forming a coherent illuminating source, is of limited use in television or other systems where a wide coverage is normally required and accordingly holographic information is produced by illuminating an object with radiation intensity modulated at a frequency lower than that of the radiation, detecting the modulated radiation emanating from the object and comparing the object radiation with a reference signal coherent with the modulating frequency. As shown the scene 62, Fig. 9, is illuminated by incoherent radiation such as from a white light source, S modulated by a kerr cell, or supplied with a high voltage source oscillating at a required modulating frequency, the object bearing radiation impinging on plane 63 which is also supplied with a reference wave modulated at the same frequency as So. The reference wave may originate from source S or a separate source S r  may be provided. The television system including scanner circuit 64 reproduces the holographic information at 65 which is photographed at 66 to produce a hologram (77), Fig. 10, (not shown) which may be illuminated by a coherent beam (78) and the reconstructed image picked up by a television camera (81) for display on a television screen (82). In a modification, Fig. 8 (not shown) the object bearing wave (51) is allowed to impinge on a plane equipped with photo-cells (52) so that an electrical signal is fed from a scanner (53) to a unit (54) where it is mixed with a reference current (55) oscillating at the modulating frequency. The output current contains all the information necessary to produce a hologram of the object. A wide object may be illuminated by two sources arranged at different angles and illuminating substantially different portions of the object or switched off and on sequentially. To reconstruct images in colour the holographic information may be obtained by illuminating the object by a multifrequency source and interposing a rotating colour filter wheel either in the beam from the source to the object or from the latter to the detector, the detector then being sequenced in synchronism with the filter wheel so that sequential holograms are recorded for each colour. The same colour sequence is then used in reconstructing the holograms. Alternatively the object may be illuminated by a plurality of sources each of different colour and modulated at different frequencies, the reference beam being also modulated at the different frequencies so that the multiple holograms thus formed can be recorded by detectors turned to pass only the required modulation frequencies. Other radiation such as X-rays or matter waves such as electron beams may be modulated to produce holograms.
Patent GB-1037517-A (GB)
Title: Traffic control systems
Inventor: LESHER JOHN CLEMENS
IPC: G08G1/087
Filed: 1963-02-05
Abstract: 1,037,517. Radio signalling; automatic gain control. RAD-O-LITE Inc. Feb. 5, 1963, No. 4636/63. Headings H3Q and H4L. [Also in Division G4] A radio transmitter for controlling traffic lights from an emergency vehicle comprises two rows of four push-buttons 2, Fig. 1 (not shown), the upper row energizing a first sub-carrier generator 6, the lower row energizing a second sub-carrier generator 8, and the four columns energizing respective ones of four tone generators feeding the sub-carrier generators. One of the buttons may also energize a relay to change the carrier from V.H.F. to H.F. Radio receivers.-The input is applied to the suppressor grid of a frequency changer 31, Fig. 2, feeding an I.F. amplifier 34, a noise limiter 66 and an I.F. amplifier 67. The load of amplifier 67 comprises circuits 68 and 69, Fig. 3, tuned to the two sub-carriers respectively and feeding respective detectors, e.g. 77, which recover the sub-carrier. Detector 77 feeds an audio detector 79 and filter 81, an audio amplifier 83 and an output stage 85 which may feed tuned relays (not shown). When one of these relays is energized a negative voltage appears on line 57 or line 58, according to which channel produced the output, and this disables the other channel, e.g. a negative voltage on line 58 cuts off valve 77. This negative voltage is also supplied to line 61 cutting off valve 59, Fig. 2, and thereby altering the cathode potential of valve 34, and a proportion of the voltage is supplied via line 53 to the suppressor of valve 34, the effect of these changes being to increase the gain of the system. A voltage proportional to sub-carrier amplitude is supplied by leads 84 and 86 to the control grids of amplifiers 34 and 67 to control the gain of the system. The control grid of valve 34 is coupled to the suppressor grid of valve 31, so that under strong signal conditions grid rectification at valve 34 produces a voltage which reduces the gain of valve 31.
Patent GB-942523-A (GB)
Title: Improvements in or relating to sound producing devices for dolls and like toys
Inventor: TING DENNIS HOK-SHOU
IPC: A63H3/28
Filed: 1962-02-07
Abstract: 942,523. Toys. KADAR INDUSTRIAL CO. Ltd. Feb. 7, 1962, No. 4661/62. Heading A6S. A " mama " sound producing device comprises a cylinder 1 closed at one end and having spaced integral lugs 4 on its exterior wall adjacent the open end thereof, a cap 3 for fitting the open end having a peripheral flange 6 extending laterally beyond the exterior wall of the cylinder and adapted in co-operation with the lugs to form an attachment to the body of the doll, a piston 2 freely axially slidable within the cylinder and having a passage therethrough to permit a flow of air through the piston during the movement of the piston within the cylinder, a soundproducing reed 23 mounted on the piston so as to be vibrated at audio frequency by the flow of air, and means, a waisted plug member 8, for restricting and interrupting the flow of air through the passage during part of the movement of the piston within the cylinder. The piston comprises an annular member 10 which fits over a rim 11 on an eccentrically apertured dish-shaped body 9, a flexible washer 12 being clamped therebetween and extends to the inner wall of the cylinder 1. An apertured diaphragm 26 extends over an aperture in the member 10, the aperture in the diaphragm 26 being of greater diameter than that of the reduced portion 28 of the plug member 8 and greater than that of the enlarged end portion 29. The body 9 has spaced lugs 13 and a reed 23 secured to one wall by a plastics strip 25. Rings 18 within the piston act as a weight to displace the piston from one end of the cylinder to the other. Initially the plug member 8 extends through and fills the opening 27, as the piston descends the opening coincides first with the reduced portion 28 and allows passage of air through the cylinder, causing the reed to vibrate at low audio frequency, then coincides with the enlarged portion 29 which closes the opening and the reed ceases to vibrate, then with further movement of the piston the plug member passes out of the cylinder and increased air flows through the piston and the reed vibrates at a higher audio frequency, the total effect being to produce the sound "mama." The apertured cap 3 and member 10 may be secured by cement to or screwed on to the cylinder 1 and rim 11, respectively.
Patent GB-585522-A (GB)
Title: New or improved milling head or attachment for machine tools
Filed: 1945-02-24
Abstract: 585,522. Attachments for milling. FOX & OFFORD, Ltd., and FOX, J. P. Feb. 24, 1945, No. 4703. [Class 83 (iii)] A milling head for attachment to a milling or like machine with a vertical driven spindle has a vertical input spindle rotatably mounted in the head in axial alignment with the machine spindle and directly couplable to it and reduction gearing between the input spindle and a horizontal spindle mounted closely adjacent to the bottom surface of the head and adapted to receive a milling cutter on one or each end. A split sleeve 14 clamps the head 11 to the bearing sleeve 15 of the machine to which it is fitted and an adaptor disc 13 is screwed into the split sleeve. Lubrication is provided by a nipple 41 and bore 40 in the adaptor disc. The head is in halves 10, 11 secured together by screws 12 and to the adaptor disc 13 by vertical screws or studs, and each half has a radiallyslotted spigot 16 fitting into a recess in the adaptor disc. A vertical spindle 17 rotates in two superimposed ball bearings 18, 19 held in a recess in the top of the head by a nut 20 locked by a spring 21. The vertical spindle 17 is connected to the machine spindle a by a flattened tongue 24 on the spindle 17 and an adaptor 25 and carries an integral bevel pinion 22 which drives a horizontal cutter spindle 34 and cutter 39 through gearing 26, 30, 31 and 33. Alternative gearing can be used, comprising a worm on the spindle 17 driving the cutter spindle through a worm-wheel and intermediate pinion. To keep the cutter spindle as close to the base of the head as possible, the diameter of the pinion 33 is made not greater than that of the spindle bushes 35.
Patent GB-127056-A (GB)
Title: Improvements in Carburetters for Internal Combustion Engines.
Inventor: STRATTON FENTON FREDERICK
IPC: F02M1/00
Filed: 1917-04-02
Abstract: 127,056. Stratton, F. F. April 2, 1917. Spray carburettors.-Relates to two-fuel carburettors of the kind described in Specifications 100,924 and 107,290, in which a suction-actuated piston valve controls air ports and carries a number of sleeves or caps fitting over nozzles and serving to bring them into action in succession as the sleeve is raised, an uncontrolled pilot nozzle also being provided which may be supplied with a lighter fuel than the other nozzles. According to the invention, the sleeves or caps L, M, Fig. 1, adjustably carried by the suction-actuated valve C, surround the main nozzles H, I and are flared at their lower ends as shown at L<2>, Fig. 7, to form choke-tubes which vary the area around the nozzles, and are provided with slots L<3>, L<4> at different levels which form outlets for the air and fuel and through which air passes to sweep the fuel from the nozzles when the valve C is at its highest point. The pilot nozzle E is sur rounded by a tube F which is fitted in a central recess in the base-plate G, Fig. 3, is contracted at its upper end F<1>, and is supplied with air through radial channels F<2>, Fig. 3. Light fuel may be supplied to the pilot nozzle E through a conduit F<4>, Fig. 3, and heavy fuel to the main nozzles through conduits branching from the conduit J<1>, Fig. 3. Heated air enters by a swivelling pipe P, passes through ports Q, R, &c. to a space T. and thence through ports D to the nozzles. Specification 8492/14 is also referred to. The Provisional Specification states that, by prolonging the lower edge of the valve C, the air supply to the pilot-jet may be closed by this valve when in its highest position.
Patent GB-575393-A (GB)
Title: Improved cork compositions
IPC: C08L27/04
Filed: 1944-03-15
Abstract: Cork compositions are made by mixing in an enclosed-type mixer at an elevated temperature one part of vinyl chloride polymer or interpolymer compositions containing 33-66 per cent of one or more plasticisers, 67-34 per cent of one or more vinyl chloride polymers which contain at least 20 per cent vinyl chloride units, with up to four parts of finely-divided cork.  Plasticisers specified are dibutyl phthalate, chlorinated paraffin wax and tricresyl phosphate. Heat stabilizers such as lead silicate and lead 2 : 4-dihydroxyquinoline, fillers such as china clay, pigments and dyes may be added.  Vinyl chloride/vinyl acetate and vinyl chloride/vinylidene chloride interpolymers are specified. The compositions may be used as linoleum substitute, gaskets, and heat-insulating tiles.  Specification 573,841 is referred to.
Patent GB-390299-A (GB)
Title: A removable plate rack for use in connection with kitchen ranges and the like
IPC: F24C15/12
Filed: 1932-02-18
Abstract: 390,299. Plate-racks. RUSSELL, E., Brent Knoll, Duffield Road, Derby. Feb. 18, 1932, No. 4798. [Class 28 (ii).] A plate-rack for a kitchen range, gas cooker, or the like comprises side members or rods a which are extended downwardly at c and inturned at d, and longitudinal members b, the inner member b being shown. The rack is supported by two spaced brackets e, the inner member b engaging in a recess f in the upper edge of each bracket, and the inturned portions d engaging cut-away recesses g. The arrangement is such that the rack is supported in a horizontal position, and is removable by swinging it towards the vertical position and lifting. The grid part of the rack is filled in with wire or rods, and the rack may be of the double form, i.e. a lower rack may be hung from or attached to the upper rack.
Patent GB-609833-A (GB)
Title: Improvements in or relating to a device for mixing machines for mortar, concrete and the like
IPC: B28C5/08
Filed: 1946-02-15
Abstract: 609,833. Mixing-machines. JEDLICKA, J. Feb. 15, 1946, No. 4853. Convention date, Oct. 18, 1939. [Class 86] In a machine for mixing mortar, concrete and the like, in which the mixing drum is rotated by friction wheels disposed symmetrically with respect to the vertical median plane of the machine, the spindles 8, 10, Fig. 1, of the friction wheels 5 are both driven by a motor 16 arranged symmetrically in front of and below the spindles, the drum 1 being pressed against the friction wheels by a roller 24 which is pressed by springs 26, Fig. 3, against a friction pin 4 on the drum. The springs 26 are mounted on bolts 28 passing through a plate 29 secured to the machine frame 21 and are adjustable in compression by nuts 27. Rollers 22, 23 are carried by the plate 29 for guiding the rim 4, and the friction wheels 5 are flanged to co-operate with the lateral edges as well as the periphery of the rim 4. The arrangement of friction wheels, pressing roller, guide rollers, and friction rim may be repeated along the length of the drum.
Patent GB-110493-A (GB)
Title: Improvements relating to Plug Connections for Electric Circuits.
Inventor: LUCAS HARRY
Filed: 1917-04-04
Abstract: 110,493. Lucas, H., and Edwards, W. H. April 4, 1917. Plug couplings consist of two plugs or sockets a each formed with a shoulder c and an extension b which passes through two non-conducting clamping - members f, the cable being clamped between :.he strips, and the bared ends of the wires being secured between the shoulders and one of the members f. The extensions may be threaded to receive clamping-nuts d and may be apertured to receive the ends of the wires.
Patent GB-863924-A (GB)
Title: Ink roller
Inventor: GOTTSCHO IRA S
IPC: B41F31/22
Filed: 1959-02-12
Abstract: 863,924. Inking apparatus. GOTTSCHO Inc., A. Feb. 12, 1959, No. 4907/59. Class 100(2) A fountain ink roller comprises a hollow body defining a reservoir for a supply of ink in its interior, a pad of absorbent material surrounding said body, at least one wick member having a portion disposed within said reservoir to receive ink from the latter and a portion extending out of the reservoir into contact with said pad for feeding ink to the latter, and means for variably conducting said wick member to thereby adjustably control the rate at which the ink is fed. The metal roller 10 is surrounded by an annular pad 22 of felt or other absorbent, resilient material positioned against an annular shoulder 26 and level with the edge 28 of the open end of the roller body. Ink is conducted by capillary action from within the roller to the pad 22 by a wick member 30 of felt or other absorbent fibrous material, comprising a radially directed annular flange portion 32 resting on the edge 28 and on the pad 22, and a generally axially extending portion 34 of saw-tooth configuration. The flange portion 32 is clamped between the edge 28 and a cap 38. An axle 20, having reduced diameter extensions 54, 56 for rotatably supporting the roller in bearings, passes through apertures in a boss 18 in the closed end wall 16 of the roller and in the cap 38. A nut 46 is screwed on to a threaded portion of the axle and secured by a pin 48, and the thickness of the flange portion 32 is varied to control the ink supply by rotating a nut 44 on a threaded portion 42 of the axle and engaging a frusto-conical seat 50 in the cap 38. The cap is also provided with a filler plug 52. In another form, the wick member is of cylindrical form, extending from the bottom of the reservoir up the cylindrical wall thereof, over the edge 28 and below the cap 38, and down the outside of the roller underneath the pad 22 to rest against the shoulder 26.
Patent GB-1029423-A (GB)
Title: Improvements in or relating to data recording means
IPC: G06V30/224
Filed: 1963-02-07
Abstract: 1,029,423. Typewriters and selective printing. SVENSKA DATAREGISTER A.B. Feb. 7, 1963 [Feb. 8, 1962], No. 5008/63. Heading B6F. [Also in Division G4] A legible character is recorded together with a coded representation by means of a type wheel or bar. Each type face is divided into areas 18a-18d, selected ones of which include a bar 20, the character being printed in one of these selected areas. As shown, the bars 20 represent the binary 15 complement of digits 0-9 with areas 18b, 18a, 18d, 18c allotted 1, 2, 4, 8 significance respectively. A code bar always occurs in at least one of areas 18c, 18d and may be used as a timing mark for machine sensing. These bars may be enlarged as at 40. A number of type wheels may be arranged in line to print a multi-character word, the wheel at one end of the line having additional bars for printing a control mark as shown at the extreme left. A further area 18c may be used for recording a parity bit.
Patent GB-959365-A (GB)
Title: Improvements in hand perforating machines for record cards
IPC: B26F1/36
Filed: 1963-02-07
Abstract: 959,365. Selective punching. M. MAUL. Feb. 7, 1963 [Oct. 4, 1962], No. 5059/63. Heading B4B. In a manual punching device for record cards, each card is movable column by column past a punch 17 by means of pairs of feed rollers provided at both sides of the punch and operable by a rotatable knob 37, the feed rollers 31 being rendered inoperative, when desired, by means of a spring-influenced key 28 which, when depressed, causes pins 29a, 29b to engage lugs on rockably-mounted levers 30a, 30b so that the card may be moved past the feed rollers 31, 43 until stopped by the pins, the pins being removed from the feed path when the key is released. The position of the card column under the punch is indicated by means of a scale on the disc 36 of the knob 37 co-operating with a mark S, Fig. 2. The punch and a matrix 18 are carried by plates 12, 13 which are slidable by means of a pivotallymounted handle 20 to move the punch into the desired hole position of a selected card column. The plates 12, 13 are secured to blocks 14, 15, the block 14 being provided with a detent spring 25 engageable with notches in a detent bar. The position of the punch is indicated on a scale co-operating with a mark Z, Fig. 2. The punch is operated to punch the card by means of a pin 21 carried by the handle 20.