baber/WOPTO huggingface dataset:
Patent GB-994072-A (GB)
Title: A method of making projection transparencies
IPC: G03B27/30
Filed: 1961-05-25
Abstract: 994,072. Films. MINNESOTA MINING & MANUFACTURING CO. May 25, 1961 [May 25, 1960], No. 18947/61. Drawings to Specification. Heading B5B. [Also in Division G2] A heat-contractile transparent plastic film is impregnated with either a plasticizer or solvent for the film. Specified films are vinyl acetate/ vinyl chloride copolymer, styrene/acrylonitrile copolymer, polyethylene terephthalate and polymethylmethacrylate. Specified plasticizers are dioctyl phthalate and chlorinated polyphenyl and specified solvents are toluene, acetone, ethyl acetate, carbon tetrachloride, methyl ethyl ketone, diethylene glycol monoethylether, benzyl chloride, benzyl alcohol, catechol, methyl isopropyl catechol and vanillen.
Patent GB-330414-A (GB)
Title: Improvements in portable food-holders
IPC: A45C11/20
Filed: 1929-06-20
Abstract: 330,414. Thermos (1925), Ltd., and Sawney, L. T. June 20, 1929. Luncheon &c. cases.- A vacuum flask f is held in position within the trough-shaped hinged cover b of a portable food container by means of a wire loop e the ends of which are hinged to the front edge of the cover at d, and which is adapted to rest on the rear upper edge h of the container a when the cover is closed.
Patent GB-1151487-A (GB)
Title: A Demountable Cover for a Prestressed-Concrete Vessel
Inventor: COSTES DIDIER
IPC: E04H7/20
Filed: 1968-04-23
Abstract: 1,151,487. Reactor pressure vessels. COMMISSARIAT A L'ENERGIE ATOMIQUE. 23 April, 1968 [28 April, 1967], No. 19028/68. Heading G6C. In an integral reactor enclosed in a prestressed concrete cylindrical pressure vessel, the top cover is formed in separate units, some of which support the heat exchangers and which are clamped together by circumferential rings. The cover for the cylindrical wall 1 is formed of the central hub 9, the peripheral plugs 15 and the peripheral blocks 6, clamped together by the rings 10 surrounding the blocks. The cover is held to the wall 1 by prestressing cables 29. Annular gallery 14, 16 permits access to the welded seals 19, 27 of the sealing skins 2, 18. The joints 12 between the blocks 6 and central hub 9 contain cement mortar and grooved metal sheeting 20, 25, 28. The heat exchangers 26 carried by plug 15 have supply and discharge tubes 22, 23 and a plug cooling circuit 24.
Patent GB-403147-A (GB)
Title: Improvements in automatic electro-magnetic contactors
IPC: H01H50/64
Filed: 1932-07-06
Abstract: 403,147. Electromagnetic switches. MUDIE, A. B., 81, Billesley Lane, Moseley, Birmingham. July 6, 1932, No. 19112. [Class 38 (v).] In order to prevent chattering of the contacts in an A.C. electromagnetic contactor the moving contact is mounted on a pivoted arm, separate from the pivoted arm carrying the armature, a toggle-like arrangement being interposed between the two arms, the toggle including a linkage which, when the switch is closed, is disposed in line or almost in line with the direction of the force tending to move the armature arm into the position corresponding to the open position, the linkage having a line joining its pivotal centres almost in line with the pivot of the armature arm, whereby only a small proportion of the opening force is transmitted to the armature arm. As shown in Fig. 3 in which the contactor is in the closed position the link 32 of the bell crank carrying the armature 16 is almost in line with the link 33 connecting it pivotally to a pivoted arm 30 carrying pivotally at 29 the moving contact arm 28. Thus only a small proportion of the force of the spring 36 connected between the arm 30 and a fixed point is transmitted to the armature arm tending to restore it to the " open " position and consequently only a slight attractive force is necessary to retain the armature in its attracted position, so that variations in the pull on the armature due to alternations of the current in the energizing coil 15 do not produce any appreciable chattering. Pressure between the contacts is assisted by a compression spring 41 acting on the carrier 28 supporting the movable contact, the mounting and shape of the contacts 23, 21 ensuring that a wiping action occurs between them during their engagement. The contacts are shielded laterally by arc shields 49. The carrier for the armature is pivoted in extending ears of the lateral supporting plates of the laminated coil 10 carrying the energizing winding 15, alignment between the armature and the pole pieces of the fixed coil being ensured by mounting the core on a pivot 18 on the armature carrying arm, rotation of the armature about this pivot being limited by pins 19.
Patent GB-827827-A (GB)
Title: Method of assembling a magnetic core matrix
Filed: 1958-06-16
Abstract: 827,827. Magnetic information-storage apparatus. NATIONAL CASH REGISTER CO. June 16, 1958 [July 29, 1957], No. 19141/58. Class 40 (9). A magnetic core memory array is assembled by locating the annular cores vertically in a jig in a predetermined pattern so that an edge portion of each core projects above the jig surface, applying an adhesive sheet under pressure to the projecting edge portions of the cores so that the cores adhere to the sheet, removing the sheet and adhering cores and placing it on a matrix supporting frame, passing wires through the cores, and securing the wires to terminals on the frame. As shown in Fig. 1, 3 and 4, the jig 20 comprises a block 21 formed with two sets of parallel grooves 22, 23 intersecting at right-angles, each intersection being provided with a headed pin 25 fitted into holes 26 and secured by a retaining plate 29 so as to form discrete recesses for accommodating the cores. The retaining plate is larger than the block 21 and has upturned edges 31 so that it forms a tray for surplus cores. The assembly is secured to a vibrator unit 34 by bolts 35 passed through slots 33. In use, the annular cores are placed on the tray and are vibrated into position in individual recesses, surplus cores being brushed off. An adhesive sheet 32 is then pressed on to the portions of the cores protruding from the surface of the jig. When the sheet is removed the cores adhere to it in the pattern determined by the jig. The sheet is then inverted, and wiring by the use of a hollow needle and attachment to a matrix frame carried out in known manner. The adhesive sheet is removed after wiring by softening the adhesive with a suitable solvent, or it may remain in position in which case the adhesive properties of exposed portions is destroyed, e.g. by polymerizing a thermosetting base. Adhesive material similar to sheet 32 may be used for masking portions of the jig when smaller matrices are constructed.
Patent GB-191620-A (GB)
Abstract: 191,620. Triplex Foundry, Ltd., and Horrell, C. R. Jan. 21, 1922. Combined open fire-places and cooking-stoves; dampers.-A combination sitting-room and cooking stove, of the type having means for passing the combustion products either wholly or partially directly to the chimney or to flues surrounding an oven and boiler, is provided with a damper d hinged at its rear edge on a frame member j disposed at the upper end of the grate back and having a pair of lugs r with inclined upper surfaces which form seatings or stops for the damper in the closed position. The damper is provided with a pivoted rod n by which it is operated from the front of the stove. The lugs r serve to direct air or gases upwards into the chimney, and, when the damper is closed, to prevent the access of . cold air to the oven flues. A narrow passage ispreferably left between the front edge of the damper, when closed, and the canopy, to carry off fumes.
Patent GB-237736-A (GB)
Title: Improvements in and relating to hot bottles
IPC: C09K5/06
Filed: 1924-08-13
Abstract: 237,736. Jost, A. Aug. 13, 1924. Hot bottles.-The air inlet cock of a hot bottle, containing a crystallizable substance such as acetate of soda, is provided with a chamber k in which a particle of crystal becomes deposited and is adapted on the cock being opened to be introduced into the substance in the bottle, in order to crystallize rapidly the substance and at the same time generate heat. Specification 9238/84 is referred to.
Patent GB-920315-A (GB)
Title: Improvements in signal distribution system
IPC: H04H1/00
Filed: 1961-05-29
Abstract: 920,315. Distributing music &c. TELEPROMPTER CORPORATION. May 29, 1961 [June 20, 1960], No. 19280/61. Class 40 (4). A central station 2 transmits television signals over a plurality of distinct frequency channels to a plurality of subscribers' stations 4, each of which is connected to the central station by means of a separate line 12<SP>1</SP> capable of carrying signals in all the channels simultaneously, means such as a band elimination filter 26 being insertable in each line 12<SP>1</SP> to block the passage of signals in at least one but less than all the television channels; all the blocking means are operable from the central station 2, for example by closing a switch 48 to operate a relay 28 at each subscriber's station, and each subscriber's station includes means, such as a button 60 controlling a relay 30, to disable the blocking means (relay 28 as shown) and means such as a solenoid 36 and a moving tape 34 to record the operation of the disabling means. Other marking solenoids 40, 42 controlled by means of buttons 62, 64 are available for use in " audience participation " programmes. A meter 49 at the central station gives an indication of how many subscribers have operated their disabling means in order to receive a particular programme, and each tape 34 forms a record of the programmes received by the corresponding subscriber.
Patent GB-459184-A (GB)
Title: Improvements in or relating to brakes for baby carriages or other wheeled structures
IPC: B62B5/04
Filed: 1935-07-06
Abstract: 459,184. Brakes for hand propelled vehicles. HUBNER, A., 27, Wycome Road, Hall Green, Birmingham. July 6, 1935, No. 19329. [Class 103 (i)] A brake for perambulators and other hand - propelled vehicles comprises a shaft parallel to a wheel axle and having a cranked part at one or both ends which when tho shaft is turned indents the tyre or tyres and thus locks the wheel or wheels, and means for locking the brake in applied position. As shown in Fig. 1, a transverse shaft 3 pivoted in a pair of brackets 4 secured to a chassis member 1 of a baby carriage has cranked ends 7 adapted to engage the wheel tyres. A bent hand lever 12 pivoted at 13 to bracket 4 has an arm 12a with a pin 11 slidable in a slot 10 in an arm 9 on the shaft 3 whereby movement of the lever rocks the shaft. Arms 12a and 9 assume a " dead centre " or locking position when the brake is applied by moving arm 12 to a vertical position. The shaft 3 may be short and engage a single wheel or it may extend across the vehicle and engage a pair of wheels. In Fig. 7, the hand lever 23 engages the slotted end of a lever 18 pivoted on a pin 19 mounted on a pair of strips 20 secured to brackets 16, 16a on the wheel axles 2. The lower end of lever 18 is connected by link 15 to an arm 14 on the shaft 13 which has cranked ends 13a for engagement with the wheel tyres. Levers 23, 18 assume a "dead centre " position as shown in broken lines when the brake is applied. A release spring 17 is connected to link 15. The end of lever 23 is disposed between the strips 20 and is forked to receive the upper arm of lever 18.
Patent GB-1328060-A (GB)
Title: Process for the production of purified diphenylsulphone-4,4- dicarboxylic acid
IPC: C07C315/06
Filed: 1972-04-26
Abstract: 1328060 Diphenylsulphone - 4,4<SP>1</SP> - dicarboxylic acid GELSENBERG AG 26 April 1972 [8 May 1971] 19430/72 Heading C2C [Also in Division C5] Diphenylsulphone - 4,4<SP>1</SP> - dicarboxylic acid is purified by treating a mixture of diphenylsulphone - 4,4<SP>1</SP> - dicarboxylic acid and contaminating material comprising one or more isomeric diphenylsulphone dicarboxylic acids at 10‹ to 100‹ C. with a solvent consisting of at least one aliphatic alcohol and/or at least one aliphatic ketone to preferentially dissolve the isomeric material, and separating the resultant solution from the insoluble material enriched in diphenylsulphone - 4,4<SP>1</SP> - dicarboxylic acid. Specified solvents are methanol, isopropanol and acetone and mixtures thereof. Examples are given which illustrate this process.
Patent GB-357268-A (GB)
Title: Improvements in electrolytic electricity meters
IPC: G01R22/02
Filed: 1930-06-26
Abstract: 357,268. Supply meters. WEST & CO., Ltd., A., Lewes Road, and CHILDS, W. A., 168, Osborne Road, both in Brighton. June 26, 1930, No. 19478. Drawings to Specification. [Class 37.] An electrolytic meter having a porous partition, preferably of " fritted " glass, between an anode chamber containing mercury and the cathode chamber is provided with siphon tubes for automatically returning the deposited mercury from the cathode chamber. The " fritted " glass is made from powdered glass sifted through a sieve meshing between 80 and 100 to the inch. More coarsely " fritted " glass made from powder meshing between 30 and 35 to the inch may be used for a partition in the siphon tube.
Patent GB-962904-A (GB)
Title: Improvements in the anodic surface treatment of titanium and titanium base alloys
Inventor: SHREIR LOUIS LIONEL
IPC: C25D11/26
Filed: 1959-06-09
Abstract: A process of anodizing titanium or titanium base alloy to produce a surface which will absorb and retain lubricant comprises using an electrolyte containing an ionizable formate, such as an alkali metal, ammonium, or alkaline earth metal formate, and/or free formic acid, the latter, when present, having a concentration not higher than 60% v/v, the anodizing being effected at a temperature not higher than 50 DEG C. and at such a current density and for such a time as to produce a micro-pitted metal/metal oxide interface.  The electrolyte may contain solvents such as alcohols or glycol and platinum or platinized titanium cathodes may be employed. In the case of tubes, a wire cathode extending through the tube interior may be used. The metal may be pretreated to remove atmospherically produced oxide film by immersing it in a solution comprising by volume 40% HNO3, 30% H2SO4 and 30% HF or alternatively by etching it in concentrated HCl. The micropitted metal, after removal of the anodic oxide coating, is receptive to the adhesion of other metals, e.g. Pt, by electroplating or other coating processes.
Patent GB-1001749-A (GB)
Title: Electrical modulator
Inventor: HEEKS JOHN STUART
IPC: H03C7/02
Filed: 1964-05-13
Abstract: 1,001,749. Keying carrier frequencies. STANDARD TELEPHONE & CABLES Ltd. May 13, 1964, No. 19890/64. Heading H3R. Microwave power flowing in a waveguide 1 is detected by a diode 3 placed a quarter wavelength from the closed end 2 of the guide, and the signal from diode 3 is fed over a coaxial connection 5 to switch off a modulator diode 4 and prevent passage of energy past the diode 4; after an interval the diode 4 will be deprived of the detector output and will revert to the " on " condition. This produces a waveform with a 1: 1 mark-space ratio. The output may be derived either from a T-joint in connection. 5 or by taking the signal from the reflected power in the waveguide. Microwave rejection filters 7 are included at each end of the connection 5 so that the connection 5 carries only the baseband signal. The diode 4 may be a high cut-off frequency gallium arsenide varactor diode and may be tuned for low transmission loss in " on " condition.
Patent GB-744423-A (GB)
Title: Improvements in or relating to check valves for hydraulic check devices applicable to spring-loaded door closers
Inventor: KEARNEY ARTHUR RICHIE
IPC: E05F3/12
Filed: 1953-07-17
Abstract: 744,423. Door checks. ADAMS, Ltd., A. W. July 17, 1953, No. 19894/53. Class 65 (1). [Also in Group XXIX] In a hydraulic check device, particularly for a spring-loaded door closer, having a plunger 3 in a cylinder 1 and a check valve, the latter comprises a chamber 10, a tubular metering valve stem 17 ported at 18 to the chamber, a metering passage where a tapered portion 17a on the stem passes through an annular piston 11, whereby liquid can flow in and out of the chamber through the metering passage and through a chamber port 4 communicating with the cylinder, and a non-return ball valve 19 within the stem. As the door closes a cam abuts a roller 6 carried by the spring-loaded plunger 3 and forces oil slowly through the port 4, chamber 10 and metering passage 17a to a reservoir. Should the door close under a greater force than that of the door closing spring, the increased pressure moves the piston 11 away from a stop 12 against its spring 13 to open a relief passage 15 so that oil is released quickly to allow the door to close. On opening the door, the plunger 3 sucks oil in past the valve 19 as well as through the metering passage. Specification 647,808, [Group XXIX], is referred to.
Patent GB-832005-A (GB)
Title: Improvements in and relating to brake control systems
IPC: B64C25/46
Filed: 1957-06-24
Abstract: 832,005. One-way clutches. YARBER, G. W. June 24, 1957, No. 19913/57. Class 80 (2). [Also in Groups XXIX, XXXIV and XXXVII] In an over-running clutch 250 used in a skidsensing device for a vehicle braking system (Group XXXIV) a plurality of steel balls 248 are mounted in the periphery of disc 244 and spring urged into engagement with ring 242 which carries the fly-wheel 240 of the skid-sensing device. Forward (counter-clockwise as seen in Fig. 8) relative rotation of disc 244 with respect to the fly-wheel mounting ring 242 causes the balls to roll outward in their guideways 249, so that they become locked between the guideway wall and the smooth race 243. A positive driving connection in the forward direction is thereby provided between driving disc 244 and the fly-wheel. On the other hand, forward relative rotation of the flywheel with respect to driving disc 244, as may occur during abnormally rapid wheel deceleration, typically causes the balls to roll on ring 242 as on a bearing race, that rolling action producing sliding contact between each ball and its spring 252 and also between each ball and the side of its guideway. The device thus operates in the deceleration direction as a torque-limiting over-running clutch, enabling disc 242 to exert upon fly-wheel 240 a decelerating torque of limited magnitude that tends to cause the fly-wheel to decelerate with the disc but smoothly permits the fly-wheel to over-run the disc whenever that limited torque is insufficient to maintain them together. Specification 674,506 is referred to.
Patent GB-674754-A (GB)
Title: Process for recovery of tar acids and bases from hydrocarbon oils
IPC: C07C37/72
Filed: 1949-07-30
Abstract: Phenols and tar-bases are separated from coal-tar oils and hydrogenation products containing hydrocarbons by extracting with an aqueous solution of alkali phenolate followed by an oxygen-containing organic solvent which may be an ether, ester or ketone boiling below 180 DEG  C., and partially immiscible with the p  phenolate, which removes the phenols which may then be separated by distillation.  The nitrogeneous bases may be extracted from the residues with acids. Hydrocarbon oils may be separated by preceding the treatment with oxygen-containing solvent with an extraction by a paraffin solvent of boiling-point below that of the hydrocarbon oil.  Degrees of extraction by various solvents are shown on graphs.  Processes of extraction of phenols from hydrocarbon oils and nitrogen bases from light hydrogenation and coal-tar oils, are described.  The nitrogeneous bases include aniline, toluidines, pyridines and higher tar bases.
Patent GB-662714-A (GB)
Title: Improved machine for use in the production of return bends in tubes
IPC: B21C37/28
Filed: 1949-08-02
Abstract: 662,714. Making superheater and like return bends. HUET, A., and COMPAGNIE DES SURCHAUFFEURS. Aug. 2, 1949 [Aug. 4, 1948], No. 20152/49. Classes 83 (ii) and 83 (iv). Angular bending; corrugating.-A machine for reducing the radius of previously formed return bends in tubes comprises a frame 1 supporting a fixed bend clamping member 3, a vertically movable bend clamping member 4 operated via a fluid-pressure cylinder 5, and a bend stressing die 23 operated via a fluid pressure cylinder 14 to move relatively to the bend clamping members 3, 4 to force the limbs of the bend under treatment towards each other. Fig. 1 shows the cylinders 5, 14 pivoted to the frame 1 and having their respective piston rods 7, 15 connected via toggle members 9, 10 and 17, 18 to the movable holding member 4 and stressing die 23. The cylinder 14 may be arranged so that the maximum pressure exerted by the toggle 17, 18 (members aligned) occurs at either half or full piston stroke. Where a single stressing die 23 is used the members 3, 4 may be profiled to form, when closed together, a die block against which the bend is pressed. Fig. 6 shows an arrangement wherein two stressing dies 23, 23a engage opposite limbs of a bend 28, the clamping members 3, 4 being formed as flat plates and the dies being operated via pivoted levers 29, 29a. Fig. 7 shows an arrangement for treating a succession of return bends 34, the clamping members 3, 4 being positioned to allow provision of bend support tables 35, 36 on each side thereof. The stressing die 23 is operated via a pivoted cranked lever 37 so that it is withdrawn, after each working stroke, below the level of the surfaces 35, 36 to allow advancement of the bends 34. Specifications 649,638 and 663,427 are referred to.
Patent GB-1007916-A (GB)
Title: A device for use in providing a measure of temperature
IPC: G01K5/64
Filed: 1964-05-14
Abstract: 1,007,916. Measuring temperature electrically. SIEMENS-SCHUCKERTWERKE A.G. May 14, 1964 [May 17, 1963], No. 20206/64. Heading G1N. Apparatus for measuring temperature comprises a semi-conductor wafer 1 located between the poles of a magnet 6 supported by a bimetallic strip 4, whereby a change in temperature causes the bimetallic strip 4 to move the magnet up (or down), and the resistance of the wafer 1, as measured between leads 2, correspondingly decreases (or increases). Zero adjustment is effected mechanically by a screw 7, or magnetically by an iron shunt 8, or electrically by a variable resistor (not shown) in shunt with the semi-conductor element 1. The element 1 and the magnet 6 may be physically interchanged.
Patent GB-165115-A (GB)
Title: Improvements in and relating to thermionic amplifiers
IPC: H03F3/48
Filed: 1919-08-18
Abstract: 165,115. Taggart, J. Scott-. Aug. 18, 1919. Drawings to Specification. Vacitunt tubes.-A thermionic valve has a filament, a cylindrical anode and two or more concentric spiral grids. Reference has been directed by the Comptroller to Specifications 149,014 and 149,973, [Class 40 (v), Wireless signalling &c.].
Patent GB-1420784-A (GB)
Title: Laser system
IPC: H01S3/00
Filed: 1973-04-27
Abstract: 1420784 Lasers SANDERS ASSOCIATES Inc 29 April 1973 [1 May 1972] 20269/73 Heading H1C [Also in Division H4] An optically pumped solid laser has an output at 0À85 microns at room temperature and is thus suited to applications where the output is in the range 0À8-0À9 microns where it is invisible to the human eye but where it may be detected by a photocathode device such as an image intensifier. The laser may be used with a receiver having a detector with a quantum efficiency in excess of 1% and a dark current less than 10<SP>-15</SP> amps at 25‹ C., for use in a night viewing system, a range finder, a target designator or a communication system. The active medium is LiYF 4  doped with Er; other rare earths such as Tb, Tm or Dy may be added to increase the optical pumping efficiency and also to depopulate the terminal state of the lasing transition so as to increase the possible output pulse rate.