baber/WOPTO huggingface dataset:
Patent GB-1281536-A (GB)
Title: Louvred ventilator
IPC: E06B7/02
Filed: 1969-09-19
Abstract: 1281536 Ventilators TIJGER PLASTICS NV 19 Sept 1969 [21 Sept 1968 12 Sept 1969] 46263/69 Heading F4V A light-proof louvre comprises a housing containing louvre blades which can be secured to and disconnected from one another, whereby a set of louvre blades may be assembled and removably arranged in the housing. In the form shown, each blade is of V- or corrugated crosssection, and has hollow extensions 12 at its peaks or valleys, which snap fit into the extensions of an adjacent blade. Further extensions 18 on the blade engage the surface of the adjacent blade and each may be linked with an adjacent extension 12. The extensions 12, 18 may be formed separately from the blades and be snap-in fits therein, and the housing may comprise two or more connectible parts. The housing may have a groove to provide a snap-in connection for a window frame.
Patent GB-1144788-A (GB)
Title: Tubular writing cartridges
IPC: B43K7/02
Filed: 1966-10-17
Abstract: 1,144,788. Ball-point pen cartridge. PAPER MATE MFG. CO. 17 Oct., 1966 [20 Oct., 1965], No. 46384/66. Heading B6P. The follower assembly for a ball-point pen reservoir comprises a tubular element 20 made of thermoplastic or thermosetting resinous compositions such as polyethylene, polyvinyl, polyamide or polystyrene. In contact with the top of the ink column 30, surrounding the element 20 and in the bore 21 thereof is a grease 28, which may be composed of an oleoginous component (non- drying viscous oil or silicone) with or without a soap or thickening agent, such as a colloidal material or salt of a fatty acid (such as aluminium stearate or zinc stearate). Other additives such as oxidation inhibitors, colloidal fillers and gel formers may be present. When, after use, the ink column has diminished as far as the constriction 17 in the reservoir, the tubular element 20 is halted. However, the plug of grease in the bore 21 continues to move down the narrow portion 13 of the reservoir as the ink is used (Fig. 3). In a modification (Fig. 4), another plastics element (23) in the form of a smoothsurfaced solid cylinder or pin is provided in the bore 21 of the element 20. When the element 20 reaches the reservoir constriction 17, the pin (23) surrounded by grease 28 descends into the narrow reservoir portion 13.
Patent GB-1132337-A (GB)
Title: Topographic ophthalmometers
IPC: G01B11/255
Filed: 1965-11-05
Abstract: 1,132,337. Ophthalmometers. P. F. M. CAMBS. Nov.5, 1965 [Feb.15, 1965; July 8, 1965], No.46928/65. Heading G2J. A topographic ophthalmometer including two sighting marks 19 which are projected on to a patient's eye 31, duplicating means within the main optical system for superimposing images of the sighting marks formed by reflection at the eye, together with a movable target to be stared at by the patient, is characterized in that the sighting marks 19 are projected on tb the eye through the front objective 20 of the main optical system. The sighting marks 19 are carried by a glass plate located in the focal plane of the objective 20, and are illuminated through a condenser 21 by a lamp 22. A Lummer cube 18 directs light from the marks 19 through the objective 20 towards the eye 31. The movable target which the patient views is provided by a graticule 14 which is projected towards the patient via a system of mirrors 29, 8, 5, 4, 2. The mirrors 2, 4, 5 are housed in a bent arm 32 which is rotatable about an axis OB perpendicular to the optical axis OA of the instrument. The remaining mirrors 8, 29 and the graticule 14 are contained in a support 30 having an aperture on the axis OB, registering with an aperture in the arm 32. In order to check the direction of the patient's gaze with reference to the optical axis OA, a protractor 6 and corresponding index mark are provided in the two apertures, one part being rotatable with the arm 32 while the other is fixed in the support 30. A supplementary viewing system 9-13 permits the optician to observe the patient's eye and the protractor reading in superposition. A third viewing system is fixed with respect to the system 9-13 and includes a graticule 26. A protractor 36 fixed to the main optical system is imaged by this third system to indicate the angular setting of the supplementary optical systems about the main optical axis OA.
Patent GB-1458603-A (GB)
Title: Polycarbonate cast films
IPC: C08L69/00
Filed: 1974-10-30
Abstract: 1458603 Polycarbonate films BAYER AG 30 Oct 1974 [31 Oct 1973] 46958/74 Heading C3R A cast polycarbonate film having an oxygen index of 26% or more and a total halogen content of at least 5 weight per cent comprises in admixture 10-30 weight per cent, based on the total polycarbonate, of a low molecular weight polycarbonate of number average molecular weight 8,000-12,000 derived from at least one halobisphenol, and 90-70 weight per cent, based on the total polycarbonate, of a high molecular weight polycarbonate of weight average molecular weight 70,000-120,000 derived from bisphenol A. Specified polycarbonates are (a) a copolycarbonate derived from 97 mol. per cent bisphenol A and 3 mol. per cent, 1,1-bis-(4- hydroxyphenyl)cyclohexane and (b) a homopolycarbonate derived from tetra-bromo or chloro-bisphenol A using tri-bromo or chlorophenol as the chain terminating agent. The polycarbonates are dissolved in methylene chloride and east to give a film.
Patent GB-1496324-A (GB)
Title: Optical fibre waveguide with effective refractive index profile
IPC: C03B37/027
Filed: 1976-11-11
Abstract: 1496324 Graded-index optical fibre INTERNATIONAL STANDARD ELECTRIC CORP 11 Nov 1976 [14 Nov 1975] 46973/76 Heading G2J To establish an effective r.i. gradient radially of the core of the fibre use is made of allimative annuli of two materials having differing r.i. and the chosen law is achieved by correlating the thicknesses of the various annuli.
Patent GB-1099547-A (GB)
Title: Furniture
IPC: A47B3/10
Filed: 1965-11-06
Abstract: 1,099,547. Camp furniture. N. S. GALE. Sept. 15, 1966 [Nov. 6, 1965], No. 47159/65. Heading A4H. A collapsible camp kitchen comprises a pair of storage cupboards 1, 1 held in spaced relationship by a shelf 10, for supporting a cooking stove, and a back plate 13 hinged to the shelf and detachably connected to both cupboards. As shown, the shelf is hinged to one cupboard and detachably connected to the other. Extensible legs 9 are provided and cupboard doors 7 are held in horizontal position by struts 8 to provide working surfaces. In modifications, the shelf is detachably connected to both cupboards and is provided with burner units linked by pipes through taps to a connector for a replaceable gas container, or the doors are sliding and detachable for insertion in guides to form working surfaces or are side-hinged.
Patent GB-1038640-A (GB)
Title: An aid to teaching
IPC: G09B19/08
Filed: 1963-11-29
Abstract: 1,038,640. Books. F. WILSON. Nov. 27, 1964 [Nov. 29, 1963], No. 47206/63. Heading B6A. [Also in Division G5] A teaching device comprises at least one sheet 12 carrying a text in a foreign language, and one or more transparent or apertured leaves 13 which may be placed over the sheet 12 so that substantial quantities of the printed matter is concealed but as the leaf 13 or leaves 13 are successively removed more and more of the text is revealed. In the embodiment described with regard to teaching French the first leaf 13a has blocking areas 14 and a few apertures so that the full text is much abbreviated and simplified. The blocking areas 14 may have text to render continuity to the text exposed. The lower sheet 13b has more apertures as the text is more fully shown and when all leaves 13 are removed the full text is seen. A translation of the text is printed on each left-hand ordinary paper sheet 12. Sets of sheets 12 with leaves 13 may be mounted in book form.
Patent GB-1480807-A (GB)
Title: Electrodes for use in electrolytic processes or cathodic protection
IPC: C25B11/10
Filed: 1974-10-31
Abstract: 1480807 Electrodes DIAMOND SHAMROCK TECHNOLOGIES SA 29 Oct 1975 [31 Oct 1974] 47234/74 Heading C7B Electrodes particularly anodes for use in electrolysis, e.g. of NaCl or KCl for production of NaOH or KOH and chlorine, chlorate or hypochlorate, generation of oxygen, recovery or winning of metals, or in cathodic protection of steel, which consist of a core of film-forming material i.e. Ti, Ta, Zr, Nb or alloy thereof e.g. a Ti Mo rod or plate, coated with at least one electro-conductive oxide e.g. of a Pt group metal with or without a film-forming metal oxide, are made by applying to the core a solution of at least one metal salt e.g. by panting, spraying or dipping, or a dispersion of the least one oxide or its corresponding hydroxide preferably by electrophoresis, drying at 80 to 120‹C, and heating first at 175 to 300‹C to remove water of crystallization then at 400 to 650‹C to form an adherent oxide coating. Examples of solutions specified are (1) isopropyl alcohol, HCl and either Pb chloride, for forming Pt oxide, with or without Ir chloride, for forming mixed oxide of Pt and Ir, or Ru chloride with Zn chloide and butyl titanate, for forming mixed Ti and Ru oxides; (2) Ti chloride dissolved in water containing HCl and chlorides of Ru, Ir and In; and (3) aqueous HCl containing chlorides of Ru, Ir, Rh, Ti and Al. The core may be pre-treated by degreasing and etching in boiling HCl or HF. A Nb plate is specified as being pre-anodized. Besides chloride, the solution may contain other salts of the metals e.g. nitrate, acetate, chelate, bromide, iodate or organometallic compound.
Patent GB-1421646-A (GB)
Title: Purification of hydrogen fluoride
IPC: B01D47/00
Filed: 1973-10-10
Abstract: 1421646 Hydrogen fluoride E I DU PONT DE NEMOURS & CO 10 Oct 1973 [11 Oct 1972] 47341/73 Heading C1A Hydrogen fluoride containing sulphur and/or sulphur compounds is purified by cooling the crude gas, and removing sulphur by contact with liquid hydrogen fluoride, the liquid hydrogen fluoride being recirculated so that the sulphur particles build up in size until they can be removed, e.g. by filtration. Sulphur containing impurities include sulphur dioxide, hydrogen sulphide, sulphuric acid and fluorosulphuric acid. The SO 2  and H 2 S may react in the liquid HF to give sulphur. Any solid particles in the gas, e.g. fluorspar and calcium sulphate (from the reaction of H 2 SO 4  with fluorspar) may be scrubbed out by using sulphuric acid. The liquid HF at a temperature of - 30 to + 15 C. and the crude gas stream pass in countercurrent in the gas cooler.
Patent GB-1198683-A (GB)
Title: Improvements in or relating to Cutting Presses.
IPC: B26F1/40
Filed: 1967-10-19
Abstract: 1,198,683. Cutting out presses. BRITISH UNITED SHOE MACHINERY CO. Ltd. 19 Oct., 1967 [20 Oct., 1966], No. 47561/67. Heading B4B. In a travelling head cutting press comprising a cutting bed 12 provided with a rubber pad 15 supporting a stack W of plies of sheet material and a presser head 16 provided with a presser member 22 having a cutting die 24 fixed thereto, the presser member being movable towards and away from the cutting bed by an hydraulic motor and the presser head being movable transversely of the cutting bed by means of an hydraulic motor-driven lead screw 42 control means are provided whereby, after a cutting stroke has been effected, the presser head is moved widthwise of the cutting bed at a fast speed and subsequently is reduced to a slow speed either automatically or at the discretion of the operator, the movement of the presser head being arrested at the discretion of the operator. For reducing the speed at the discretion of the operator, the control means comprises two hand held portable signalling units 50 connected to the press by cords 51, each unit having a jog button 56L or 56R corresponding to leftward or rightward movement of the presser head and a trip buttoon 54L or 54R, actuation of the trip buttons together being effective to initiate a cutting stroke. Alternatively, for reducing the traverse speed automatically, the control means comprises a fast traverse timer (FTT), Fig. 5 (not shown), which operates automatically after a pre-set time interval. Actuation of each jog button is also effective in arresting widthwise movement of the presser head prior to the next cutting stroke being initiated. The lower limit of the cutting stroke is determined either through contact of the die with the cutting pad 12 or through a lower limit switch (LS), Fig. 5 (not shown). The presser member 22 is movable towards and away from the cutting bed by means of an hydraulic piston and cylinder 26, 28. The movement of the cylinder 26 is controlled by means of a solenoid-operated stroke control valve (84), Fig. 4 (not shown) and the motor 46 driving the lead screw 42 is controlled by means of a solenoid-operated valve (102) having left and right solenoids (108), (110), the speed of the motor (46) being controlled by a fast/slow arrangement including a solenoidoperated valve (94) and two restrictions (96, 98) of different values. The electric circuit of the press includes three banks of switches (Sl, S2, S3), Fig. 5 (not shown), each having four contacts which are indexable by means of a stepping coil (160). The electric circuit also includes a selector switch (169) which is opened or closed by the operator according to whether a speed change is to be effected manually or automatically.
Patent GB-1474817-A (GB)
Title: Method of forming a patterned high energy beam resist and a resist so formed
IPC: G03F7/039
Filed: 1974-11-04
Abstract: 1474817 Electron-beam resists TEXAS INSTRUMENTS Inc 4 Nov 1974 [5 Nov 1973] 47651/74 Heading G2C A process for forming negative resists comprises imagewise exposing to electron beams a material comprising a support and a layer of polyalphachloromethacrylate or vinyl chloride/vinyl acetate copolymer to cross-link the exposed areas and removing the unexposed areas. The resist may be further hardened by baking at (i) 70‹-130‹C for 30 minutes for the polymer or (ii) 100‹C in oxygen for 30 minutes for the copolymer. Positive resists may be produced using the polymer by lowering the electron beam current or by using as developer, isobutylmethyl ketone in alcohol whereas an aromatic solvent is used for developing negative resists.
Patent GB-1279394-A (GB)
Title: Improvements in or relating to the control of electric motors
Inventor: COLLINGWOOD CLENNELL HUGH
IPC: H02P8/14
Filed: 1968-10-08
Abstract: 1279394 Control of stepping motors HAWKER SIDDELEY DYNAMICS Ltd 8 Oct 1969 [8 Oct 1968] 47689/68 Heading H2J The rotor of a polyphase motor is made to follow a magnetic field vector that shifts round angularly as a result of the switching of the field currents in the several field windings, the switched current pulses applied to the various fluid windings of the stepping motor being pulse width-modulated so that the magnetic field vector rotates smoothly instead of stepwise. A reversible digital counter 12 provides sequentially switched outputs to the motor field windings and receives, at its forward and reverse inputs, a pair of pulse trains f1, f2, the frequency of one being variable with respect to the other. The counter may be a Johnson counter with internal connections to inhibit an output of all binary "ones" or all binary "zeros". A unit 15 ensures that corresponding pulses from the separate trains are not applied simultaneously to the counter but one is delayed before reaching the counter input. The unit comprises respective channels to transmit the two pulse trains, each channel comprising an input bi-stable stage followed by a gate which is cross-coupled with the corresponding gate of the other channel so that when one gate is passing a pulse the other is inhibited, each bi-stable stage being reset after a time delay, by an output pulse from its respective following gate. Both gates feed a common clock channel for the counter through a respective differentiator. The motor is of the three-phase type driven in a six-step mode by the outputs of a three-stage counter applied through respective power amplifiers 13 to the motor field windings. The motor may meter the flow of fluid to an hydraulic motor which is thereby slaved to the electric motor.
Patent GB-1003332-A (GB)
Title: Improvements in or relating to joining sheet materials
Inventor: DAWSON WILLIAM
IPC: E04F13/18
Filed: 1962-12-18
Abstract: 1,003,332. Wall cladding. IMPERIAL CHEMICAL INDUSTRIES Ltd. Nov. 12,1963 [Dec. 18, 1962], No. 47750/62. Heading E1V. A panel of a synthetic thermoplastic polymeric material for fastening to a supporting structure in combination with similar panels to provide a cladding such that the main area of the panel is spaced from the supporting structure has at least one recess along at least one edge but not more than two edges, which two edges are then adjacent, each edge of the panel adjacent to and containing the recess or recesses being stepped to receive an edge of a second similar panel to support it flush with the first panel. The recess (Fig. 1) is preferably continuous and extends along the whole length of one edge of a panel 6 fixed to a wall 8 by screws 10 and may be a trough 9, one side limb 13 of which is less in height than the other limb 12 by the thickness of the second panel 7, and has a flange 14 thereon. A continuous clip 15, of which there may be more than one, is provided near the opposite edge of the second like panel and holds the two panels together by engaging with the flange 14. The clip may be integral with the panel or welded to it. Fig. 3 shows a panel 42 with two continuous recesses 43, 44 with outer limbs 47, 48 respectively (with flanges 52, 53) shorter than the inner limbs 45, 46, so that the flat surfaces of adjoining panels equivalent to the surfaces 49, 50 of panel 42 conceal the recesses and present a flush surface. The inner limb 51 of the recess 43 where shown is the same height as the limb 48 of the recess 44. Clips 54 are on the panel undersurface. In Fig. 5 two edges of the panel 64 are stepped at 67 and 72 to receive an edge of a second similar panel so as to support it flush with panel 64. The thermoplastic material may be a polymer of vinyl chloride with 0 to 20 thereof by weight of vinyl acetate or vinylidene chloride and 0 to 10 thereof a plasticiser, or a polymer or copolymer of an acrylic or/and methacrylic ester, e.g. polymethyl methacrylate, a copolymer of methyl methacrylate and a lower alkyl acrylate containing from 1 to 10 carbon atoms in the alkyl radical and which may be 2-ethyl hexyl acrylate. The synthetic thermoplastic may be moulded or extruded.
Patent GB-1211683-A (GB)
Title: Improvements in valves for controlling fluid flow
Inventor: GERRARD WILLIAM ALAN
IPC: F16K41/16
Filed: 1966-10-27
Abstract: 1,211,683. Valves. TRIANGLE VALVE CO. Ltd. 14 Dec., 1967 [27 Oct., 1966], No. 48233/66. Heading F2V. A valve comprises a housing 14 having a bore into which a shaft or spindle 10 with a fixed collar 12 project, a circumferential groove in the bore and/or collar, and locking means 25 coacting between the housing and the collar by engagement in the groove or grooves to locate the shaft in the bore against axial displacing forces while allowing the shaft to rotate. The locking means may be a stainless steel circlip engaging grooves in the bore and collar, as shown, or overlying a stepped portion of the collar. Alternatively, stainless steel retaining pins may be positioned radially or transversely over the collar and be located in the bore by stainless steel rings. In further embodiments the spindle is located by a radial bolt in the collar or housing engaging a groove in the other part. Washers of anti-friction material, of P.T.F.E. and of asbestos are positioned above the collar and the rotation of the spindle which may operate a ball valve is limited by a stop 20.
Patent GB-1073072-A (GB)
Title: Tunnel diode circuit
IPC: H03C1/14
Filed: 1963-12-06
Abstract: 1,073,072. Tunnel-diode squegging osciltators. STANDARD KOLLSMAN INDUSTRIES Inc. Dec. 6, 1963 [Dec. 10, 1962], No. 48304/63. Heading H3T. [Also in Division H2] A tunnel diode is provided with A.C. bias which cyclically sweeps it over its negativeresistance region, and manually operated means for connecting the bias supply to the tunnel diode, this power supply comprising an induction generator with a manually operated member moving in a magnetic field. Such a circuit forms a squegging oscillator which can be used as transmitter and receiver in a system for the remote control of a television receiver as described in Specification 1,073,071. It can also be used in other telemetering and remote control applications. The oscillator circuit (Fig. 3) comprises tunnel diode 31 with resonant circuits 31 and 45 tuned to the carrier frequency (1000 Mc/s.) and modulating frequencies respectively. The induction generator is shown at 30. The modulating frequency may be 100-500 kc/s. or may be up to 1 Mc/s. The modulating frequency sweeps the tunnel diode in and out of its negative resistance region so that the carrier frequency is generated during alternative half-cycles of the modulating frequency. Several alternative modulating frequencies may be available. The carrier-frequency tuned circuit may be in the form of a series-tuned copper strip to serve as a radiator (Fig. 6, not shown).
Patent GB-1043178-A (GB)
Title: Method and apparatus for aligning endless belts
Inventor: CLARK WILLARD
IPC: B65G39/16
Filed: 1963-12-07
Abstract: 1,043,178. Endless conveyers. BALL BROS. CO. Inc. Dec. 7, 1963, No. 48408/63. Heading B8A. In a method of maintaining alignment of an endless belt with a tensioned horizontal upper flight and a slack lower flight correction is made on the slack lower flight. As shown, articles 9 are carried through a lehr on a conveyer belt 6 with a tensioned upper flight 6a and a slack lower flight 6b. Sensing rollers 19 of an alignment apparatus 10 detect any deviation of the belt 6 from its required path and act through levers 22 to skew rollers 18, interconnected by shift bars 17, to introduce correction of the wander. The belt 6 should contact the rollers 18 about an arc of from 40 to 115 degrees, preferably 65 to 90 degrees (Fig. 5).
Patent GB-1453210-A (GB)
Title: Mixtures suitable for use as binders for adhesives and their use
IPC: C08L25/12
Filed: 1974-11-08
Abstract: 1453210 Polymer mixtures BAYER AG 8 Nov 1974 [9 Nov 1973] 48409/74 Headings C3R C3P and C3G Binders for adhesives comprise a mixture of (A) a hydroxy polyester urethane with a M.W. above 30,000 and (B) a copolymer and/or graft polymer of styrene and/or α-methyl styrene with another olefinically unsaturated monomer. The hydroxypolyesterurethane (A) may be prepared by reacting a polyester derived from adipic acid, butano-1,4-diol and/or hexane- 1,6-diol, an #-polycaprolactone or a dihydroxy polyhexamethylene carbonate with a diisocyanate and optionally a chain lengthening agent. Most preferably the component (B) is a copolymer of styrene and/or α-methyl styrene with acrylonitrile or a mixture thereof with a graft polymer obtained by grafting an acrylonitrile/styrene or acrylonitrile/α-methyl styrene on polybutadiene. Suitably the proportion by weight of components A : B is between 1 : 0À05 and 1 : 3. The binder may be dissolved in a solvent, e.g. ethyl acetate, acetone or methyl ethyl ketone to form an adhesive suitable for bonding substrates of paper, cardboard, wood, metal, leather or synthetic resins.