baber/WOPTO huggingface dataset:
Patent GB-1062026-A (GB)
Title: Method of effecting the anodic oxidation of thin films of valve metal
IPC: C25D11/26
Filed: 1963-11-15
Abstract: Anodic oxidation over a limited area of a film of valve metal deposited on a substrate is effected by covering the film with an appropriately apertured template insulated at least on its surface contacting the film, filling the aperture with a viscous mass of electrolyte and passing an anodizing current through the electrolyte and valve metal.  The template may be of insulating material, when the cathode connection is made by pressing a metal gauze into the viscous electrolyte, or it may be of metal coated on at least one face with an insulating lacquer.  If more than one area is to be anodized on the same coated substrate either a multiple apertured template is used or the process is repeated with intervening removal of the electrolyte of the previous stage. The electrolyte may be thickened with gelatine, agaragar or gum arabic, while by using silica gel or metal hydroxides thixotropic electrolytes may be produced, in which case the template may be removed leaving one or more 'islands' of electrolyte gel. Separate cathode connections may be made to each 'island'.  Valve metals specifically mentioned are Al, Ti, Ta.
Patent GB-1311235-A (GB)
Title: Nitrocellulose propellant powder
IPC: C06B21/00
Filed: 1971-09-29
Abstract: 1311235 Propellants WASAGCHEMIE GmbH 29 Sept 1971 [8 Oct 1970] 45284/71 Heading C1D The ballistic properties of a nitrocellulose propellent powder are improved by storing vacuum-dried powder for 1¢ to 4 months before surface treatment with a desensitizer in order to provide progressive combustion. Storage may be in air or water. In examples the desensitizer is a mixture of symmetrical diethyldiphenylurea and dibutyl phthalate.
Patent GB-1305805-A (GB)
IPC: F16B21/20
Filed: 1970-09-25
Abstract: 1305805 End-face shaft seal R HEINRICH 25 Sept 1970 [25 Sept 1969] 45712/70 Heading F2B An end-face seal comprises a seal member 6 mounted in the bore 7 of, for example, a pump impeller 8 by means of an 0-ring 12 which exerts a locking force in the direction of the arrows, the stressed state of the 0-ring being produced by rolling it through an angle between 180 and 360 degrees during the insertion of the member within the bore. The 0-ring is installed by rolling it beyond 180 degrees such that a flange 11 on the member engages an end face 14 with a snap action, for example, after a rotary angle of 210 degrees. Relative rotation between the seal member 6 and impeller 8 may be prevented by providing a waveform gap for the O-ring. In another embodiment, the flange 11 is omitted.
Patent GB-1132147-A (GB)
Title: Improvements in or relating to cellular polymeric material
Inventor: SERGOT BRUNON MIECZYSLAW
IPC: C08J9/224
Filed: 1966-10-17
Abstract: 1,132,147. Coated particulate expandable polymers. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 17 Oct., 1967 [17 Oct., 1966], No. 46230/66. Headings C3C and C3P. A polymer composition comprises dry particles of an expandable polyvinyl aromatic compound, e.g. polystyrene, coated with a minor amount of a carboxylic acid amide of a polyalkylene polyamine or mixture of such amides. In an example polystyrene in bead form and containing n-pentane was tumbled with an alcoholic solution of the reaction product of diethylene triamine with coconut fatty acids, the treated beads were then pre-expanded with steam and then moulded into blocks in a steam-heated mould.
Patent GB-1409807-A (GB)
Title: Electrical terminal
IPC: H01R9/26
Filed: 1972-10-06
Abstract: 1409807 Terminal blocks G SCHLEGEL [trading as GEORG SCHLEGEL ELEKTROTECHNISCHE FABRIK] 6 Oct 1972 [16 Oct 1971] 46247/72 Heading H2E A terminal for mounting in alternative, relatively reversed, positions on a rail 11 having internal flanges 9, 10 at different heights, has an elastomeric insulating body carrying-depending legs 5, 6, the latter having a recess 8 to fit on one rail flange. The other leg has a niche 12 to accommodate one corner of the rail when required, a recess 7 of semi-circular cross-section to engage the other flange and an arcuate portion 14 with its centre at recess 8. The leg 15 is bent inwardly when fitting the terminal or removing it from the rail, but is dimensioned so as to be unstressed when in position. The insulating body is open-sided, but is provided with projections as at 2 to mate with recesses in an adjacent terminal body.
Patent GB-1442376-A (GB)
Title: Electromagnetic relay
IPC: H01H50/20
Filed: 1973-10-05
Abstract: 1442376 Electromagnetic relay MATSUSHITA ELECTRIC WORKS Ltd 5 Oct 1973 [14 April 1973] 46634/73 Heading H1N An electromagnetic relay, Fig. 2A, comprises a two-part insulating outer shell A, B, the part A being partitioned for locating fixed contacts 5, 6, 7 and terminals and housing a movable insulating frame 1 carrying contacts 16, 17 which is mechanically coupled to a movable iron core 19, whilst the part B houses a fixed iron core 23 and a winding 22 and is formed with grooves 27<SP>1</SP> in opposing side walls 26 which accept intermediate portions 29, 29<SP>1</SP> of C- shaped looped wire springs 18, 18<SP>1</SP> whose free ends are engaged by holes 27 on the movable frame 1. The spring structure provides a negative characteristic whereby the return bias force component decreases as the movable core is attracted towards the fixed core on account of the increasing angle to the plane of direct action of each C-spring (Fig. 7, not shown). In another embodiment, Fig. 5A, the two-part outer shell is vertically divided, the electromagnetic components are re-orientated by 90 degrees, and the intermediate portions of the springs 18, 18<SP>1</SP> abut vertical apertures 36 in opposed walls through which a tool can be inserted to lift the springs on to fulcrum projections 34 when the relay has been fully assembled. In further embodiments (Figs. 3 and 4, not shown) different means for anchoring the ends and/or intermediate portions of the C-springs (18, 18<SP>1</SP>) are described and in yet a further embodiment (Fig. 6, not shown) the grooves (27<SP>1</SP>) are skewed so that the movable frame and core lies at an angle to the walls of the fixed core and the frame and core turn through this angle during attraction to give a reduced impact force and to provide contact wiping action. Other shapes of looped wire springs with resilient properties acorss the loop may be used.
Patent GB-1132185-A (GB)
Title: Sliding electrical contact
Inventor: ROBSHAW NORMAN
IPC: H01R12/72
Filed: 1967-10-17
Abstract: 1,132,185. Switch contacts. AMPHENOL CORP. 17 Oct., 1967, No. 47285/67. Heading H1N. A sliding spring contact arm 11, Fig. 2, carrying a contact stud 12 has projections 13 in slidable engagement with the other contact member on each side of the line of sliding of the stud 12, whereby material of the arm 11 is prevented from being rubbed on to the stud 12. In modifications a recess or hole is made in the arm 11 adjacent to the stud 12, and in the line of sliding.
Patent GB-1055310-A (GB)
Title: Improvements in slicing machines
IPC: B26D7/30
Filed: 1963-12-03
Abstract: 1,055,310. Slicing machines. UNEXCELLED CHEMICAL CORPORATION Dec. 3, 1963 [Dec. 19, 1962], No. 47721/63. Heading A4C. [Also in Divisions G1, G3 and H3] In a slicing machine, meat &c. loaves 54 are continually fed at a controlled rate by a pusher 45 to a slicing blade 56, a controlled number, e.g. 6, 8 or 10, of slices pass as a stack from the stacker 32 to a two-speed weighing conveyer 36, the latter being driven at low speed to receive and weigh a stack and at a higher speed to deliver same to a reject conveyer 42 which under the control of the weighing mechanism 98 laterally diverts stacks of incorrect weight to a reject station 44, the weighing mechanism 98 also controlling, in accordance with errors in stack weight, a servo-mechanism 85 which includes a reversible electric motor controlling the feed rate of the loaf 54 thereby to adjust slice thickness and hence stack weight. Rejected stacks are made up to the correct weight by hand and are passed to a transfer conveyer 40, carrying stacks of correct weight and thence to a packaging station 38. Pulses from the scale of the weighing mechanism 98 serve to vary the orifice size of a hydraulic control valve 84 in the loaf feed rate control and also to actuate a solenoid 288 in the reject circuit to permit correct weight stacks to pass over the reject conveyer 42 to the transfer conveyer 40. The solenoid 288 is not actuated by an incorrectly weighted stack so that a spring urged rod 290 associated with the solenoid core pivots an arm 280 mounted beneath the upper run of the reject conveyer 42 to laterally divert stack supporting plaques 252 by engagement with depending studs 262 thereon, the plaques 252 being slidable along rods 250 extending transversely between conveyer chains 244, 246 and the diverted studs 262 being guided along an adjustable cam rail 272. The whole operation is controlled in timed sequence by electronic circuits which also ensure a time delay before the weighing scale reads the stack weight, prevent a feed rate adjustment in response to the first two stacks from a loaf, and ensure a time delay between the weighing and the operation of the reject mechanism. The reject mechanism may be actuated by underweight stacks and by stacks more than  ounce overweight.
Patent GB-1221305-A (GB)
Title: Improvements in aircraft tyres
Inventor: WEBB JOHN
IPC: B60C3/04
Filed: 1967-10-20
Abstract: 1,221,305. Pneumatic tyre tread. FIRESTONE TYRE & RUBBER CO. Ltd. 26 June, 1968 [20 Oct., 1967], No. 47936/67. Heading B7C. An aircraft tyre has a tread surface comprising an odd number of circumferential grooves 3 and 4, the central groove 3 being offset by 5-10 degrees, measured at the centre of rotation of the tyre, with respect to the midcircumferential plane of the tyre, and at least one pair of secondary grooves 4 being disposed symmetrically one on each side of the central groove, the lands 2 between grooves being wider than the grooves themselves.
Patent GB-1199879-A (GB)
Title: Method of Indicating Changes of Liquid Pressure in a Centrifugal Separator
Inventor: NILSON C-G
IPC: B04B1/18
Filed: 1968-10-10
Abstract: 1,199,879. Centrifugal separators. ALFALAVAL A.B. 10 Oct., 1968 [10 Oct., 1967], No. 48107/68. Heading B2P. Changes of liquid pressure at a predetermined radius within the rotor 1 of a centrifugal separator during purification of a liquid are detected by a pressure or flow sensing means 17 connected to a duct 16 extending into the rotor to the said radius, flow or pressure changes being transmitted to the means 17 by a gas, harmless to the means 17, which is pumped through the duct 16 and prevents the liquid from contacting the means 17. The duct 16 is connected to a radial pipe 15 located in a chamber 14 into which opens the inner end of a sludge-level-indicating pipe 13. The duct 16 and pipe 15 may rotate with the rotor. The separated liquid flows into a paving chamber 10 from which it is discharged by means of a stationary paring disc 11 to an outlet duct 12. The disc 11 is provided with an opening 18 through which a small quantity of the separated liquid is continuously passed down into the chamber 14 and flows through the pipe 13 into the rotor as long as the outer end of the pipe 13 is free. The means 17 indicates the pressure or flow rate prevailing in the duct 16 due to the continuously supply of the harmless gas therethrough. When the sludge deposition at the outer end of the pipe 13 becomes sufficiently great, the small quantity of separated liquid supplied through the opening 18 will not be able to escape past the sludge plug and consequently the pressure in the chamber 14 rises so that a change in the pressure and flow rate in the duct 16 occurs, this change being indicated by the means 17 which is arranged to effect sludge discharge from the rotor automatically when the change reaches a certain value. The harmless gas may be soluble in the purified liquid.
Patent GB-1094785-A (GB)
Title: Metallising plastics
Inventor: KIRKBRIDE ERNEST
IPC: C23C14/20
Filed: 1965-11-12
Abstract: Plastics tubing, e.g. of polyethylene, polypropylene, polyvinyl chloride or copolymers of vinyl chloride, nylon, polyethylene terephthalate or copolymers of vinylidene chloride, is coated with a metal, e.g. Al, Cu, Ni, Zn, Ag, Au or Cr, by passing the tubing continuously through a vacuum metallizing chamber whilst maintaining within the tubing a pressure below atmospheric pressure to prevent expansion of the tubing in the metallizing chamber.  The tubing may be passed through one or more vacuum chambers from which metal vapour is excluded immediately before it enters and after it leaves the metallizing chamber.  The metallizing chamber may contain more than one source of metal.  A coating of plastics material may be applied upon the metal coating e.g. by an extrusion die.ALSO:Plastics tubing, e.g. of polyethylene, polypropylene, polyvinyl chloride or copolymers of vinyl chloride, nylon, polyethylene terephthalate or copolymers of vinylidene chloride, is coated with a metal, e.g. Al, Cu, Ni, Zn, Ag, Au or Cr, by passing the tubing continuously through a vacuum metallising chamber whilst maintaining within the tubing a pressure below atmospheric pressure to prevent expansion of the tubing in the metallising chamber and then with a coating of plastics material, e.g. by an extrusion die.  The tubing may be passed through one or more vacuum chambers from which metal vapour is excluded immediately before it enters and after it leaves the metallising chamber.  The metallising chamber may contain more than one source of metal.
Patent GB-1439210-A (GB)
Title: Process for preparaing cycloalkanones and cycloalkanols
IPC: C07C29/132
Filed: 1973-10-16
Abstract: 1439210 Preparation of cycloalkanols and cycloalkanones from cycloalkylhydroperoxides STAMICARBON BV 16 Oct 1973 [21 Oct 1972 9 Oct 1973] 48142/73 Heading C2C Cycloalkanols and cycloalkanones are obtained simultaneously by contacting a cycloalkylhydroperoxide having 5 to 12 ring carbon atoms with catalyst which consists of or comprises chromium oxide. In examples cyclohexylhydroperoxide is contacted with chromium oxide, optionally on a support such as silica, alumina or titania.
Patent GB-1144710-A (GB)
Title: Switching circuits
IPC: H03K17/72
Filed: 1967-10-24
Abstract: 1,144,710. Supply systems for consuming apparatus. RADIO CORPORATION OF AMERICA. 24 Oct., 1967 [28 Oct., 1966], No. 48293/67. Heading H2H. A circuit for supplying a load 12-such as an electrically heated blanket, cooker, space heater or an electric motor-comprises a triac 20 in series with the load 12 across an A.C. supply 10, 11, the gate electrode 18 of the triac being energized by a time constant circuit which includes a capacitor 32, the circuit being such that the switching instants of the triac are near the zero voltage points of the A.C. waveform, thus avoiding interference in nearby audio and video apparatus. When a switch 34 is closed, the capacitor 32 charges from the A.C. source 10, 11 by way of diodes 24, 26 and resistor 28, the voltage to which the capacitor charges being limited by the voltage divider comprising resistors 28, 30. Whilst the capacitor is being charged, the diode 22 is reverse biased and hence no firing signal appears at the gate electrode 18 of the triac 20. As the capacitor charges and the voltage of the supply 10, 11 progresses through a half-cycle, the voltage distribution becomes such that the diodes 24, 26 are reversely biased and the diode 22 forwardly biased, whereupon the capacitor 32 discharges through the gate electrode 18 to fire the triac 20. The values of the resistors 28, 30 are so chosen that the point at which the capacitor 32 provides the firing signal occurs very near the end of the capacitor charging half-cycle and the value of the capacitor is such that it will continue to discharge into the gate electrode in the two succeeding half-cycles, thus firing the triac near the beginning of these half-cycles, the capacitor then recharging and the operation repeating. A transistor may be placed in parallel with the diode 24 and capacitor 32 by means of which the circuit may be turned on and off without the use of the switch 34. Alternatively, the diode 24 may be replaced by a transistor which is used to turn the circuit on and off. Furthermore, the supply may be a three-wire source with the control portion of the circuit connected between one of the outer terminals and the neutral line.
Patent GB-1494866-A (GB)
Title: Camera for underwater and above water use
IPC: G03B17/08
Filed: 1975-11-25
Abstract: 1494866 Waterproof camera W HAKING INDUSTRIES (MECHANICS & OPTICS) Ltd 25 Nov 1975 48387/75 Heading G2A A camera mechanism 14 has a waterproof cover comprising a main housing 12 having objective and view-finder window means, opening means through which operating controls extend in watertight manner to the camera mechanism, and a sealable opening through which the camera mechanism may be loaded while within the housing. As shown, camera mechanism 14 has objective lens 82, view-finder lens compartment 130, battery compartment (150) Fig. 5 (not shown), capacitor compartment 154, capacitor charge indicator 162, electronic flash switch 166, flash tube 160, compartments 92 for a film cartridge, film aperture engaging finger (124), shutter release plunger 86, and screws 98 for securing to housing 12. Housing 12 has an objective lens window 20, close-up lens accessory 30, view-finder window 22, window 58 for viewing indicator 162, bore 34a to receive an electronic flash light control knob 50 to operate switch 166, flash diffuser window 24, bore 32a to receive a shutter release control button 40, film advance on control arm 74, and two releasable locking units 60 for a cover 16. Cover 16 has viewfinder window 180, film indicator window 182, film engaging springs 192, and ears 16b engaged by locking units 60. Cover 16 and the shafts of button 40, knob 50 and arm 74 are provided with water-sealing O rings. Housing 12 and camera mechanism 14 may each be of one-piece transparent plastics which has been partially coated to leave light transmitting areas. In alternatives, (a) the objective may be on housing 12, (b) the view finder lens may be on cover 16, and (c) a combined objective/view-finder reflex system may be employed.
Patent GB-1237824-A (GB)
Title: A process for the preparation of antibiotic derivatives
IPC: C07H15/16
Filed: 1969-10-02
Abstract: 1,237,824. Process for 1-demethyllincomycins. UPJOHN CO. 2 Oct., 1969 [21 Oct., 1968], No. 48469/69. Heading C2C. A 1-demethyllincomycin of the formula wherein R is Me or Et; R 1  is 2-8 C alkyl; and X is Cl or Br is prepared by demethylating the corresponding 1<SP>1</SP>-methyllincomycin using Streptomyces punipalus NRRL 3529 S. venezuelae NRRL 3528 or NRRL 3527 S. spectabilis NRRL 2494 or NRRL 2792; Aspergillus oinatus NRRL 2291 Scopulariopsis Crevicaulis ATCC 7903 or Trichoderma viridae NRRL 1762.
Patent GB-1360686-A (GB)
Title: Process for manufacturing paper-like film
IPC: D01F1/10
Filed: 1971-10-21
Abstract: 1360686 Synthetic paper JAPAN SYNTHETIC PAPER CO Ltd and DAINIPPON INK & CHEMICALS Inc 21 Oct 1971 [22 Oct 1970] 49010/71 Headings C3G C3P and C3Q Paper-like film is formed from a composition comprising inter alia a mixture of (i) 90-60 wt. per cent of a thermoplastic resin which is a styrene polymer, and correspondingly (ii) 10-40 wt. per cent of a rubber having a solubility parameter of 8-9. Pigments, fillers and other additives may be present. The film may be calender- or hot roll-treated to impart gloss and smoothness thereto. Exemplified films are formed from compositions containing various combinations of the following ingredients:-thermoplastic resin: polystyrene, graft copolymer of styrene on polybutadiene, styrene/acrylonitrile copolymer, graft styrene/ polyisoprene copolymer; rubber: natural rubber, SBR, polybutadiene, polyisoprene, butyl rubber, nitrile rubber; pigments and fillers: SiO 2 , lithopone, TiO 2 , CaCO 3 , ZnO, ZnS, BaSO 4 ; antioxidants: phenyl-#-naphthylamine, 4,4<SP>1</SP>- butylidene - bis - (3 - methyl - 6 - tertbutylphenol), 2 - mercaptobenzimidazole, 4,4<SP>1</SP>- thiobis - (6 - tert. - butyl - 2 - methylphenol), 2,6 - di - tert. - butyl - p - cresol; antiozonants: 1,3 - dibutylthiourea, p - alkoxy - N - alkyl aniline, 1 - cyclohexyl - 3 - phenylurea; anti-static agents: sodium n-dodecyl (or tetrapropylene)- benzene sulphonate, sodium lauryl sulphate; U. V. absorbents: 2-hydroxy-thio-octoxy-benzophenone, 2,4 - dihydroxy - benzophenone.
Patent GB-1067616-A (GB)
Title: Production of fine-fibred, acid-soluble polymerised substances and their use for the production of non-woven fabrics, paper and cardboard
Inventor: BRUENING DIETHELM
IPC: D01F6/60
Filed: 1963-12-12
Abstract: Fine fibres suitable for use in making papers, or cardboards are made by dissolving a polymer in an acid and reprecipitating it by diluting the acid solution with water with the use of a high shearing stress. In the example, polyhexamethylene adipamide is dissolved in sulphuric acid and the solution is dripped into water in a vessel provided with stirring means and baffles.  After separation of the fibres, the diluted acid may be concentrated for reuse.  Other acids referred to are hydrochloric, phosphoric and formic.  Suitable polymers are polyhexamethylene - adipamide, polycaprolactam, polyacrylonitrile and polyethylene terephthalate.  The fibres obtained may be processed alone or mixed with other natural or synthetic fibres on a paper-making machine to form non-woven fabrics, papers or cardboards. The fibres can be made to cohere by heating in the presence of water at temperatures below the softening points of the polymers.
Patent GB-1197445-A (GB)
Title: Motor Vehicle Body Liner
Inventor: GODFREY ALAN CROFTON
IPC: B60R13/02
Filed: 1966-11-04
Abstract: 1,197,445. Motor vehicle body liner. IMPERIAL CHEMICAL INDUSTRIES Ltd. 27 Oct., 1967 [4 Nov., 1966], No. 49590/66. Heading B7J. [Also in Divisions B4-B5] A motor vehicle body panel liner e.g. for a roof 1 comprises a layer 3 of foamed synthetic polymeric material (e.g. polyvinyl chloride, polyurethane or polystyrene) covered by a treated skin 5 (e.g. fabric, plastics-coated fabric, plastics, paint or synthetic rubber &c.), the layer 3 being moulded with one or more necked cavities 4 resiliently engageable with metal or foamed plastics members 2 on the roof 1 to thereby retain the liner. The cavities 4 may also be of trapesoidal cross-section, and comprise either slots or sockets. The members 2 may be solid or hollow rails glued to (or integral with) the roof 1, or spring clips, engaging the slots; or may be studs engaging the sockets. The liner has a wire or strip framework embedded therein or attached thereto, and the walls of the cavity are reinforced by a resilient metal or plastics insert. The skin 5 may be integral with and of the same material as the foamed layer 3, or applied by spraying or brushing.