baber/WOPTO huggingface dataset:
Patent GB-1356128-A (GB)
Title: Colour-former compositions for pressuresensitive recording
IPC: B41M5/124
Filed: 1971-11-12
Abstract: 1356128 Pressure-sensitive recording sheet FUJI PHOTO FILM CO Ltd 12 Nov 1971 [13 Nov 1970] 52766/71 Heading D2B [Also in Division C4] A pressure-sensitive recording sheet comprises paper coated with microcapsules containing a colour-former composition comprising an organic solvent solution of a colourformer and a hydrogenated quinoline compound. The latter may be used in an amount 10-500% by wt. of the colour-former as a stabiliser therefor. Conventional colour-formers and solvents are listed. The sheet can be used in conjunction with a second sheet coated with a solid acid substance as colour-developer.
Patent GB-1211207-A (GB)
Title: Hydraulic apparatus for applying tension to cables
IPC: E04G21/12
Filed: 1967-11-21
Abstract: 1,211,207. Tensioning wires. CONENCO CANADA Ltd. 21 Nov., 1967 [23 Nov., 1966], No. 52958/67. Heading F2G. Apparatus for prestressing cables 11, 11b embedded in concrete 10 and having opposing ends extending out of facing surfaces defining a pocket 13 in the concrete comprises a rigid frame 20 adapted to be rested on the concrete over the pocket, a first hydraulic jack 24 having a piston-rod 24a fixed to the frame and a cylinder casing 24b linearly movable relative to the piston-rod longitudinally of cable 11, said casing carrying an attachment 30 for engaging the cable end, and a second independently operable hydraulic jack 27 having a piston-rod 27a fixed to the frame and cylinder casing 27b linearly movable with respect to piston-rod 27a in opposing direction to the cylinder casing 24a, said casing 27b carrying an attachment 31 for engaging the end of cable 11b so that expansion of the jacks forces the cable ends towards each other to tension the cables. The frame comprises elongated side plates 21, 22 and welded end plates 23a, 236 at opposite ends. The side plates are formed with upper and lower inwardly-extending transverse lips to function as guide rails for plates 26 and 28 secured to the cylinder casings to constrain the latter for linear movement. The attachments 30, 31, Fig. 2, each comprise side plates 31a, 31b welded to the respective cylinder casings and reinforced by cross-plates 31d. Each side plate is provided with a keying projection 33 adapted to engage a corresponding recess in a head 12 secured to each respective cable end. If it is desired to exert an additional tensile force on one of the cables only, say cable 11b, locking blocks 40, 41 which are adjustably carried on four threaded longitudinally-extending rods 36-39 fixed to each end plate and which are guided by the outer sides of guide rails 21, 22, are positioned to bear against the extreme right wall of the pocket. Hydraulic jack 27 is then further expanded to apply the necessary additional tensile force to cable 11b. After tensioning the cable, as indicated by the upper portion of Fig. 1, the cable heads are connected by a bolt 14.
Patent GB-1415105-A (GB)
Title: Oscillator and method of operating thereof
IPC: H03B5/32
Filed: 1973-11-15
Abstract: 1415105 Automatic frequency control STANDARD TELEPHON UND RADIO AG 15 Nov 1973 [17 Nov 1972] 52968/73 Heading H3A An automatic frequency control system for an oscillator comprising a crystal and an amplifier connected in a closed loop includes a phase shift circuit which is varied in discrete steps to adjust the frequency when it drifts to predetermined upper and lower limits. The phase shift circuit comprises a parallel connected inductor and resistor across which fixed capacitors may be switched. The limits are determined by an up/down counter.
Patent GB-1098969-A (GB)
Title: Plant pot
Inventor: REITZNER PETER WILLIAM FRANZ
IPC: A01G9/10
Filed: 1966-11-25
Abstract: 1,098,969. Plant pots. QUEST NURSERIES Ltd. Nov. 25, 1966, No. 52991/66. Heading A1E. A pot for cultivating and transporting plants and trees comprises a cradle having two oppositely disposed rigid side members 3 and a support member 4 for the root ball of the plant, and a flexible side wall 5 detachably secured to the side members to form an enclosure of frusto-conical shape to retain the root ball. As described the side wall comprises two sheets 6, 7 which are clamped between pairs of separable parts 8, 9 forming the side members, the sheets 5 being removed and replaced by larger sheets when it is desired to increase the size of the pot. A rod 17 is provided to facilitate lifting the pot. The member 4 may comprise a rigid rod having a number of pins 18 extending at right angles thereto or a rod to which is welded a circular member.
Patent GB-1276116-A (GB)
Title: Improvements in or relating to monitoring circuits for operating on electro-medical signals
IPC: A61B5/352
Filed: 1969-10-30
Abstract: 1276116 Electro-medical apparatus AMERICAN OPTICAL CORP. 30 Oct 1969 [6 Dec 1968] 53131/69 Heading G1N In an E.C.G. waveform monitoring system, the heartbeat rate is determined by detecting the occurrence of the R waves in a level detector 20 whose threshold level is continuously adjustable in accordance with the peak amplitude of the R wave. The basic waveform is passed through a high-pass filter 14 and then directly to the level detector 20 and also to a peak detector 16 which gives a D.C. output corresponding to the amplitude of the R wave. This D.C. output is applied to a potentiometer 22 whose tap is connected to the other input of detector 20, which acts as the threshold level which is a fraction of the R wave peak but is above the level of the P and T waves. Upon the occurrence of a filtered R wave at the detector 20, a multivibrator 24 is triggered to produce an OS pulse. The peak detector has a time constant of the order of 10 seconds such that the threshold level changes slowly relative to the heart beat rate. In an alternative, Fig.4 (not shown) the filtered E.C.G. signal is full-wave rectified before passing to the peak detector and level detector.
Patent GB-1521720-A (GB)
Title: Process for manufacturing finished and semi-finished products from mixtures of various synthetic resin scrap materials
IPC: B29B17/04
Filed: 1975-12-30
Abstract: 1521720 Reusing scrap polymer INSTITUT NATIONAL DE RECHERCHE CHIMIQUE APPLIQUEE 30 Dec 1975 [31 Dec 1974] 53165/75 Headings C3L and C3M Mixed scrap comprising incompatible synthetic resins are reused by coarsely grinding (to an average particle size of 1-4 mm. and a maximum size of 6-7 mm.) and compounding with 5-25% by weight of a fibrous material having an average particle length at least three times the average particle size of the ground scrap; up to 20% of a non-fibrous additive may also be used. The fibres may be in the form of matting. In examples the resins are different forms of PVC or PVC with polyethylene and polystyrene, glass mat being used as the fibrous additive.
Patent GB-1303210-A (GB)
IPC: B41F23/02
Filed: 1971-11-16
Abstract: 1303210 Damping apparatus H WEITMANN and J KONRAD [trading as WEITMANN & KONRAD] 16 Nov 1971 [28 Nov 1970] 53196/71 Heading B6C A damping roller 16, Fig. 2, in an offset press is sprayed with moisture from a series of vertically mounted centrifuges 8, Fig. 1, fed with water from a pumping system (Fig. 3, not shown) via pipe-lines 11. Each centrifuge is mounted in a separate enclosure and is driven through a belt and pulley system from a common electric motor and each enclosure has an outlet aperture 14 controlled by a slidable member 15. The pumping system recirculates unused water and also allows the inclusion of additives such as alcohol to the liquid. Each centrifuge may be driven by its own motor. Instead of spraying the roller the invention may be used to spray a web directly, prior to printing.
Patent GB-1237335-A (GB)
Title: Process for the purification of tetrachlorodiane and/or dichlorodiane
Inventor: ZOCHE GUNTER
IPC: C07C39/367
Filed: 1969-10-30
Abstract: 1,237,335. Chlorinated 2,2 - bis - (4 - hydroxyphenyl)-propane. DYNAMIT NOBEL A.G. 30 Oct., 1969 [30 Oct., 1968; 15 Sept., 1969], No. 53311/69. Heading C2C. [Also in Division C3] The purity of 2,2-bis(4-hydroxy-3,5-dichlorophenyl)-propane (TCD) and/or 2,2-bis(4-hydroxy-5-chlorophenyl)-propane (DCD) is increased by dissolving the TCD and/or DCD in a hydrocarbon or hydrocarbon mixture which is liquid at 20‹ C. and in which TCD and/or DCD are highly soluble in the absence of an aqueous phase and substantially insoluble following the addition of an aqueous phase, and precipitating TCD and/or DCD of increased purity from this solution by the addition of an aqueous phase. Solvents which alone are unsuitable for the purification can be added to solvents suitable for use in this process. Examples are given. The invention also comprises a method of preparation of TCD and/or DCD by chlorinating 2,2 - bis - (4 - hydroxyphenyl) - propane in a solvent which is substantially stable under the chlorination conditions and from which the products can be precipitated by the addition of water. Examples are given which illustrate this process.
Patent GB-1079380-A (GB)
Title: Pick-up arms for record players
IPC: G11B3/10
Filed: 1965-12-16
Abstract: 1,079,380. Gramophone pick-ups. H. EBNER, [trading as PERPETUUM EBNER FABRIK FUR FEINMECHANIK UND ELEKTROTECHNIK STEIDINGER & CO. KOMM.- GES.]. Dec. 16, 1965 [Jan. 29, 1965], No. 53400/65. Heading H4J. [Also in Division G5] To set the inclination angle at exactly the 15 degrees required for stereo records, the pick-up cartridge is adjusted by the screw 7.
Patent GB-1448824-A (GB)
Title: Dynamo electric machines
IPC: H02K9/19
Filed: 1972-11-18
Abstract: 1448824 Cooling dynamo-electric machines LUCAS INDUSTRIES Ltd 5 Nov 1973 [18 Nov 1972] 53422/72 Heading H2A A dynamo-electric machine comprises stator and rotor windings cooled by a coolant which is directed through a passage 25 and apertures 26 in the rotor shaft 14 by a pump 27 driven by the rotor, the coolant subsequently gathering in a sump 32 which includes a heat exchanger 34. The alternator shown has two stators 15 and two rotors 18 whose field windings 19 are energized by the rectified output of an exciter 22. The coolant is oil which also lubricates the rotor bearings 13.
Patent GB-1117370-A (GB)
IPC: H02K1/17
Filed: 1965-12-20
Abstract: 1,117,370. Electric motors. G. CARTIER. 20 Dec., 1965 [21 Dec., 1964; 10 June, 1965], No. 53854/65. Heading H2A. An electric motor comprises permanent magnet E sandwiched between two interdigitated sheet metal pole members F, G set in a moulded plastics shell. As described, an annular ferrite magnet E is positioned between two sheet metal pole members F, G and retained by injection of plastic material so as to form one half of a double-cup shaped casing. The rotor 108 is formed by moulding together cores 115, a hub 116 and a copper disc 111. The disc 111 is then cut into sectors by means of a milling cutter (Fig. 4, not shown) so as to form a commutator. Brushes 125 are retained in cups 123 formed in part H of the insulating casing. The motor is suitable for mounting within the door of a road vehicle for window operation.
Patent GB-1286080-A (GB)
Title: Tomographic radiation cameras
IPC: G01T1/29
Filed: 1969-11-05
Abstract: 1286080 Gamma ray position finding; tomographic apparatus NUCLEAR-CHICAGO CORP 5 Nov 1969 [8 Nov 1968] 54126/69 Headings H4D and H5R [Also in Divisions G1 and G6] The distribution of radionuclides, in volume, is determined by a movable collimator mounted between the body under investigation and a radiation sensitive device. Radiation from the body, 30, passes through the collimating channels, 11, of the radiation opaque slab, 10, and forms scintillation images in the thalliumactivated sodium iodide transducer, 21. The slab, 10, is rotated about the vertical axis and the image paths in 21 are circles, the radii of which depend on the distance between the source of radiation and the transducer. The image signals are detected and the resultant impulses are passed through a correction circuit which produces a single point representing a radiation source in 30 on a CRT. The correction circuit permits selection of the horizontal plane through 30, in which the radionuclide distribution is to be investigated.
Patent GB-1236451-A (GB)
Title: Fluidic rate sensing device
Inventor: HARRIS PETER JAMES
IPC: G01D5/42
Filed: 1968-11-15
Abstract: 1,236,451. Fluidic sensing device. WESTING- HOUSE BRAKE & SIGNAL CO. Ltd. Oct.29, 1969 [Nov.15, 1968], No.54297/68. Heading G1K. [Also in Division G3] A fluidic sensing device comprises a member 1 having a chamber 20 movable, relative to an input and two output ports, in one direction to provide repetitively alternate charging and discharging of the chamber via the input and one of the output ports respectively to produce a pressure at the output port indicative of movement in the said one direction, and in another direction similarly to provide pressure at the other output port. Annulus 19 carries two input ports 16, 17, Fig.1, or S1, S2, Fig.2, and two pairs of output ports A 1 , A 2  and B 1 , B 2 , each pair being connected to an output pipe 10 or 11 respectively. Member 1 is coupled to a shaft where motion is to be indicated or measured by grub screw 29, and contains 9 separate chambers each connected to the face of member 1 adjacent annulus 19 by an aperture 21. A source of air-pressure is connected to inlet ports S 1  and S 2  via pipe 9. On rotation of member 1 by the shaft in direction A, Fig. 2, each chamber in member 1 takes in air as its aperture 21 passes an inlet port S 1  or S 2  and gives out air as it passes an outlet port A 1  or A 2  respectively. Each chamber is vented as it passes gaps 31 between sets of ports. The pressure at an output port may be smoothed and is a function of the velocity of rotation. The ports may be elongated in the annulus 19 as in Fig.2 for high speed measurement. A greater number of sets of ports e.g. four sets may be provided.
Patent GB-1478339-A (GB)
Title: Multiple track record replay
IPC: G11B5/02
Filed: 1975-12-19
Abstract: 1478339 Recording and playback BRITISH BROADCASTING CORP 19 Dec 1975 [19 Dec 1974] 54922/74 Heading G5R A record 10 having a plurality of parallel tracks S is played back by at least an equal plurality of heads H, signals representative of the recordings on the respective tracks being produced (Fig. 4, not shown) in spite of lateral wander x of the record by combining the signals from the heads in proportions controlled by a signal which is generated from the output of at least one of the heads (as shown, from heads H0, H1, H4 and H5) and is dependent upon the lateral position of the record relative to the heads.
Patent GB-1213276-A (GB)
Title: An improvement in or relating to apparatus for dispensing liquid
Inventor: EARDLEY JAMES EDWARD
IPC: G01F11/04
Filed: 1966-12-12
Abstract: 1,213,276. Delivering measured quantities of liquid. MILLS BROS. (SHEFFIELD) Ltd. 8 March, 1968 [12 Dec., 1966], No. 55516/66. Addition to 1,011,863. Heading B8N. The apparatus for dispensing liquid as claimed in the parent Specification is modified by mounting the valve assembly 12 on dispensing device having a free piston slidable on a hollow shaft 24 within a cylinder 16 thereby dividing the latter into two chambers 40, 42, the arrangement being such that in one position of the valve, liquid flows into the chamber 42 via an inlet 70, the bore of the shaft, and ports 32 thereby moving the piston so that the liquid in the chamber 40 is dispensed via ports 98, 94, 90, 88 and a nozzle 86; in a second position of the valve the chamber 42 is emptied while the chamber 40 is filled. Reference has been directed by the Comptroller to Specification 1,056,256.
Patent GB-1375381-A (GB)
IPC: H01L35/34
Filed: 1971-11-30
Abstract: 1375381 Thermoelectric devices ATOMIC ENERGY OF CANADA Ltd 30 Nov 1971 [16 Dec 1970] 55522/71 Heading H1K Limbs of thermoelectric semi-conductor material individually coated with uncured polyimide are assembled in superposed rows and with strips of cured polyimide film disposed between adjacent limbs in a row and between adjacent rows, the assembly slowly compressed to expel excess uncured resin which is then wiped off, and the assembly baked while compressed to cure the polyimide and baked again after removal of the compressing force. As described alternate limbs are bismuth telluride of P- and N-type respectively. The limbs are coated with a solution of partially cross-linked polymide in N-methyl pyrrolidone and xylene and assembled with the cured strips in a PTFE jig, which is placed successively in ovens at 80, 100 and 150 C. for periods of 24, ¢ and 1 hours respectively. After removal from the jig the assembly is heated at 350 C. for an hour. A pattern of contacts connecting the limbs in series, parallel, or series-parallel arrangement is provided on the ends of the assembly, e.g. by masked vapour deposition, electroplating through a mask, or by electroplating overall followed by pattern etching. However the contacts preferably consist of strips cut from lead coated nickel foil which are soldered on electroless nickel plated end. faces of the assembly. After soldering the contacts on one face excess lead is trimmed away with a knife, any residual lead, flux and electroless nickel between contacts removed by a jet of abrasive powder, the assembly washed in a flux solvent and the face polished. Then the process is repeated on the other face. Fired metal coatings on beryllia plates are photo-etched to provide metal areas matching the contact patterns, coated with zinc chloride flux and dipped in solder, suitable solders being lead and 2À5 wt. per cent silver for the plate on the hot side of the assembly and tin or tin and 38À1% lead for the cold side plate. The solder is reduced in thickness by mounting the plates in a jig (Fig. 4, not shown), and abrading with 600 grit silicon carbide. The assembly is then mounted on one of the plates with the corresponding metal and contact patterns aligned with the aid of adhesive marker strips on the assembly and plate, placed on a heated platform and heated to melt the solder for 30 seconds. After cooling the other plate is attached to the opposite face of the assembly.
Patent GB-1446551-A (GB)
Title: Mixing devices
IPC: B01F7/16
Filed: 1972-12-01
Abstract: 1446551 Mixing apparatus SILVERSON MACHINES Ltd 3 Dec 1973 [1 Dec 1972] 55584/72 Heading B1C An immersion mixer has a stator 3 with a cylindrical side wall 7, an open inlet end 9, outlet apertures 11, and a closed end plate 15; and a rotor comprising a disc 29 with radially offset blades 31 and apertures as at 33, 35 to prevent pressure build-up between the rotor disc and the stator end plate.
Patent GB-1402407-A (GB)
Title: Apparatus for examining a record with a light beam
IPC: G05D3/20
Filed: 1973-11-30
Abstract: 1402407 Photo-electric scanning G S B STREET 30 Nov 1973 [30 Nov 1972] 55705/73 Addition to 1324241 Heading G1A [Also in Division G3] Apparatus for scanning recorded information with a light beam comprises steering mirrors; mirror positioning means responsive to digital error signals derived from applied command and position feedback signals; a secondary fine-control deflection system having faster response than the steering mirrors; means for applying said error signals to the secondary deflection system; and means for detecting the light beam after its interaction with the recorded information. A narrow laser beam 10 after passing through a secondary deflection system 11 is focused by a lens 13 and directed by a main deflection system 14 to a surface 15 carrying recorded information whence, after reflection or transmission, it is detected by a known device (not shown). The X and Y components of the main deflection system 14 comprise respective mirrors 16, Fig. 2 each mounted on crossed springs 17 and provided with driving coils 18 coupled to a magnetic field. Mirrors 19-23 constituting a Michelson interferometer reflect a light beam 24 (which could be derived from the laser 10) to generate interference fringes whose shift in response to the mirror displacement 16, is sensed by the photo-cells 25, 26 to supply signals in mutual quadrature to a fringe counter 27. A mirror control circuit 28 detailed in Fig. 3, comparing the fringe counter output with a digital command vector signal 29, supplies an analogue deviation signal with velocity-dependent damping to the driving coils 18. A secondary deflection system 11, e.g. an electro-optical device as described in Specification 1012430 or a pair of small suspended mirrors as described in Specification 1394570 makes rapid fine adjustments to the beam when driven by a secondary control system 28.
Patent GB-1202337-A (GB)
Title: A method of coating a metal body with a plastics material and a metal body coated with a plastics material
IPC: F25B9/00
Filed: 1968-11-25
Abstract: 1,202,337. Coated metal. TOKYO SHIBAURA ELECTRIC CO. Ltd., DAIKIN KOGYO CO. Ltd., and TOHO KASEI CO. Ltd. 25 Nov., 1968 [27 Nov., 1967], No. 55722/68. Heading B2E. [Also in Division F2] Plastics-coated metal is produced by plating a metal layer on the surface of the metal, forming a large number of holes or recesses in the plated metal layer by electrochemical etching and coating the metal layer with plastics which fills the holes or recesses. The metal may be the surface of either or both the piston and cylinder of a cryogenic expansion engine and the plastics may be a fluorine-containing resin, e.g. polyetetrafluoroethylene, polytrifluorochlorethylene, copolymer of tetrafluoroethylenehexafluoropropylene, or polyolefin resins, e.g. polyethylene. Other surfaces which can be treated are rollers, bearings, machine parts or the working surface of a die of a press. The metal plating may be chromium, soft steel, stainless steel, copper, brass, gun metal or aluminium alloys. The resin may be retained only in the holes or recesses. In Figure 2 a chromium layer 38 is formed on the surface of a cylinder 12 of a cryogenic expansion engine and a large number of holes 40 are fully packed with tetrafluoroethylene, polytetrafluoroethylene 42 so that a clearance of 6 microns between the cylinder surface and the piston 14 is provided. In an embodiment, to provide such a clearance, the base metal, e.g. nitrided steel or stainless steel of both piston 14 and cylinder 12 is finished to a suitable size and annealed at 600‹C. The surface of the piston is fully freed from oil, grease, oxide film, rust and chromium plating is conducted using a bath comprising 250 grams per litre anhydrous chromic acid and 2.5 grams per litre sulphuric acid or 250 grams per litre anhydrous chromic acid, 1.3 grams per litre sulphuric acid and 10 grams per litre sodium fluosilicate to provide a thickness of 5 to 250 microns chromium plating, the polarities of the electrodes are then reversed to cause the chromium surface to be electrochemically etched and the piston after washing and drying is then vacuum impregnated with an aqueous suspension of tetrafluoroethylene resin. The piston is then dried and then baked at 327‹C. to 420‹C. Both the surface of the piston and the surface of the cylinder may be coated with resin, or alternatively, a layer of resin may be deposited only on the inside of the cylinder.
Patent GB-1160728-A (GB)
Title: Improved Light Sensitive Material
Inventor: TAVERNIER BERNARD HIPPOLIET
IPC: C07D263/48
Filed: 1966-12-14
Abstract: 1,160,728. Gold mercaptides. GEVAERTAGFA N.V. 28 Dec., 1966 [14 Dec., 1966], No. 56996/66. Heading C2C. [Also in Division G2] The gold mercaptide of the formula is made by treating guanidine 3-mercaptopropane sulphonate with an ammoniacal solution of chloroauric acid tetrahydrate. The gold mercaptide of the formula is made by reacting gold fulminate with 3-(msulphophenyl) - 1: 2: 4 - triazoline - 5 - thione at pH 1. 3 - (m - Sulphophenyl) - 1: 2: 4 - triazoline - 5 - thione is obtained by ring-closing 1-(m-sulphofluorobenzoyl)-thiosemicarbazide with alkali.