baber/WOPTO huggingface dataset:
Patent GB-1091850-A (GB)
Title: Improvements in or relating to paint boxes and the like
Inventor: SHOTTLANDER ERIC
IPC: B44D3/04
Filed: 1965-11-08
Abstract: 1,091,850. Hinged lids. FRED LIEBETRUTH Ltd. Nov. 1, 1966 [Nov. 8, 1965], No. 47188/65. Heading B8P. [Also in Division B6] Upper and lower sections of a stamped box, e.g. a paint box, have rolled beaded edges 3, 3a, which are hingedly connected by a bifurcated pin or pins 4. A colour tray fits tightly in the bottom section and extends into the upper section.
Patent GB-1492771-A (GB)
Title: Process for producing multicellular stretched articles
IPC: D01F1/08
Filed: 1974-10-31
Abstract: 1492771 Process for multicellular plastics articles BAKELITE XYLONITE Ltd 31 Oct 1974 [31 Oct 1973] 47239/74 Divided out of 1470372 Heading C3C A process for the production of a multicellular stretched article comprising forming a composition which comprises a blend of a thermoplastic matrix polymer and from 2-50% by weight, based on the total weight of the blend of an additive by mixing together the matrix polymer and the additive at a temperature at which both are molten, the additive being a polymeric or non-polymeric organic compound or a metal salt of an organic acid, other than a metal resinate or rosin ester, and being at least partially incompatible (the additive forms a phase distinct from the matrix polymer) with the matrix polymer in the concentration employed at the temperature at which the article is subsequently stretched, the additive not being a polymeric organic additive when the matrix polymer is a crystallizable polymer, other than an olefin polymer, forming an article from the blend, and then stretching the said article at a temperature which is within the normal orientation temperature for the matrix polymer and which, when the additive is a polymeric organic additive, is below the glass transition temperature of the additive, or, when the additive is a non-polymeric additive is below the melting or softening point of the additive so as to form microvoids in the matrix polymer. The matrix material may be polymers selected from olefin homopolymers or copolymers (especially ethylene or propylene polymers and high density polyethylene), polyesters, polyamides, polystyrene or a vinyl polymer. The polymeric additives may be selected from polycarbonates, polyvinylcarbazole, polyvinylacetal, phenoxy resin, phenol-formaldehyde resin, or a non- linear polyester resin, and the non-polymeric additive a substituted or unsubstituted benzoic acid, adipic acid, tartaric acid, itaconic acid or metal salt of said acids, a benzoic acid derivative, isonicotinic hydrazide, lactose, trimellitic anhydride. The composition may also comprise fillers (calcium carbonate, diatomaceous earth) and pigments (titanium dioxide), preferably of particle size 1À10 Á and up to 30 wt. per cent, based on the total composition. The shaped article may be a fibre, filament, tape, sheet, film or tube and produced by simultaneous biaxial stretching on a flat bed stretching apparatus. In the examples, the compositions used were (1), (3), (6) polycarbonate high density polyethylene; (7) as (1) with calcium carbonate; (2) polycarbonate/polypropylene, (4) p-toluic acid/nylon 11; (5) high density polyethylene and lactose, isonicotinic acid hydrazide, adipic acid, calcium tartrate, p-toluic acid, trimellitic anhydride or itaconic acid, in Example 3, the density of the tube was 0À81 g/ml and in Example 6, 7, the sheets contained predominantly closed cells.
Patent GB-1075487-A (GB)
Title: Improvements in and relating to sheet material in openwork structural form
Inventor: PATCHELL ALBERT GEORGE
IPC: B29C55/12
Filed: 1964-11-20
Abstract: 1,075,487. Thermoplastic open network sheet; laminates. T. J. SMITH & NEPHEW Ltd. Nov. 19, 1965 [Nov. 20, 1964], No. 47397/64. Headings B5B and B5N. Open network structures are formed by biaxially stretching a sheet of thermoplastic material having a plurality of non-connected depressions in at least one surface. The biaxial stretching is sufficient to cause the sheet to become permanently set in an expanded state; various depression-bounding portions of fullthickness sheet material become elongated and attenuated; and the area of each depression is expanded, becomes thinner and splits to form network openings. The sheet may be composite, e.g. a laminate of two different thermoplastic materials. The depressions may be, e.g. circular, elliptical, polygonal, re-entrant or otherwise, or annular; various different shapes may be used on one surface; they may be convergent downwardly from the open end, and their bases may be concave, pointed or stepped. They may be arranged in rows. Depressions, preferably of the same shape, may be formed on both surfaces in axial alignment. Interconnecting portions formed across the openings may be removed by flaming or blowing with a hot gas. The depressions are formed by embossing rollers. After the network structures have been formed, they may be further stretched in two directions.
Patent GB-1302318-A (GB)
IPC: G21C7/107
Filed: 1971-10-12
Abstract: 1302318 Controlling reactors HOCHTEMPERATUR REAKTORBAU GmbH 12 Oct 1971 [12 Oct 1970] 47444/71 Heading G6C A shut-off rod for a pebble bed reactor having a loose packing of substantially spherical fuel and moderating elements (i.e. operating elements), which is inserted directly into the loose packing, has the lower part of its end which penetrates into the loose packing either convex so that it acts as a buffer element or formed with one or more concave recesses so that an operating element can be held by it to act as a buffer element. In the embodiment shown in Fig. 1b, the rod consists of neutron absorbing material 2 housed between outer and inner steel sheaths 1 and 3 with a central cooling channel 4, and has a conical tip rounded at its end. The upper part 6a of the tip is made of steel and the lower part 6b of a material of low elasticity modulus, e.g. graphite. The upper part 6a contains outlet holes 5 for the cooling medium and the lower part 6b is axially movable relative to the upper part 6a, a compression spring 8 being interposed between the two parts. The lower part 6b can alternatively (Fig. 1a, not shown) be attached by means of bolts or pins. The effect of using a material of low elasticity modulus for the lower part 6b of the rod tip is to enlarge the surface of contact which occurs in the loaded condition, with a resulting reduction in the maximum surface pressure and in the possibility of operating element fracture. In a further embodiment, the lower part is provided with a concave recess in which an operating element is captured as the rod is inserted into the loose packing. The capture occurs at a very short penetration depth and upon further insertion of the shut-off rod, the rod tip with the captured element acts like a rod tip which consists of graphite in its lower part. As shown in Fig. 5a, the recess has a hole through which a cooling gas stream 12 is passed and this generates in the annular gap between an operating element 11 and the rod end a negative pressure (the " hydrodynamic paradox ") which retains the element 11 in the recess, even though the rod may be partly withdrawn prior to being reinserted. Advantageously the interior surface of the recess is provided with a material to reduce friction between the recess and a captured element. A further reduction in friction can be achieved by adding lubricants (e.g. gaseous lubricants such as NH 4 , CO 2  or H 2 O) to the gas stream which retains the element. By means of a regulating device, this gas stream can be controlled so that it is maintained only during the withdrawal of the rod, the coolant otherwise flowing through outlets such as are shown in Fig. 1b.
Patent GB-962779-A (GB)
Title: Process for the preparation of uranium oxyfluoride and oxides of uranium therefrom
IPC: C01G43/04
Filed: 1962-12-17
Abstract: Uranium oxyfluoride, UO2F2, is prepared by treating uranium hexafluoride with dry steam above its condensation temperature, e.g. 92.2-159 DEG  C. The dry powder, particle size 0.1 m , may be separated from HF gas by gravity and a cyclone separator, and the HF dissolved in water.  The UF6 may safely contain more U-235 than natural uranium.  The UO2F2 may be fed through a screw feeder by vibration and then converted into (a) UO3 by treating with steam at 427-537.8 DEG  C. in the absence of air, (b) U3O8 by treating with steam and oxygen, e.g. excess air, at 537.8-964.5 DEG  C., (c) UO2 by heating to 537.8-964.5 DEG  C. in H2 (e.g. dissociated NA3) and in the presence of steam to reduce the fluoride content of UO2.  These processes may be carried out in Ni alloy apparatus such as a rotary tube calciner or stationary tube with revolving screw, or in static bed.  Particle size of the oxide varies from 0.55 to 2.5 m  and density from 0.65 to 1.5 gms./c.c. with temperature.  The UO2 powder may be compacted and heated to 1600 DEG  C. in H2 to give a density from 90 to 99% of the theoretical.
Patent GB-1245233-A (GB)
Title: Electrical analogue circuits simulating the transient thermal resistance of a semiconductor device
Inventor: HARVEY IAN GEORGE
IPC: G06G7/62
Filed: 1967-10-19
Abstract: 1,245,233. Electric analogue simulating circuits. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. 18 Oct., 1968 [19 Oct., 1967], No. 47681/67. Heading G4G. [Also in Division H2] An analogue circuit simulates the D.C. transient thermal resistance of a semi-conductor device (e.g. a thyristor or junction rectifier), i.e. the ratio of temperature rise for t seconds of constant power input to the power input (Fig. 1), for a step change of power dissipation. In Fig. 2, plural series resistances R 1  to R n  are shunted by capacitances C 1  to C n  and receive a step direct current input I to cause a rise or fall of unidirectional voltage V across the circuit given by where t is elapsed time from step input. I is proportional to internal power dissipation of the device, or to the product of load current and voltage drop. V is proportional to internal temperature rise of the device and the transfer function of the circuit is proportional to the D.C. transient thermal resistance. The branch time constants are determinable by a computer programme fitting the sum of the exponential to experimental data of the transient thermal n resistance for α r  to be +ve, and # A r  is pror=1 portional to the steady state thermal resistance. In a modification (Fig. 3, not shown) incorporating the dual of the circuit of Fig. 2, a step unidirectional voltage V<SP>1</SP> is applied across plural parallel branches each comprising a resistance R<SP>1</SP>r<SP>1</SP> and inductance L<SP>1</SP>r, in series to produce a unidirectional current I<SP>1</SP> given by wherein t<SP>1</SP> = time elapsed since step, is proportional to the steady state thermal resistance, voltage V<SP>1</SP> is analogous to power dissipation, current I<SP>1</SP> is analogous to temperature rise. The circuits are applicable to over-current protection of the devices. Specification 1,081,585 is referred to.
Patent GB-1496190-A (GB)
Title: Truck for a railway vehicle
IPC: B61F13/00
Filed: 1975-11-21
Abstract: 1496190 Undercarriages; wheel arrangements; axles; railway vehicle wheels A SEIFERT 21 Nov 1975 47903/75 Headings B7L and B7C A railway vehicle truck 50 has wheels 1<SP>1</SP> on half axles 55 each inclined to the horizontal at an angle less than 90 degrees so as to tilt the wheels inwardly from the vertical, each wheel having a generally frusto-conical riding surface or rim 8<SP>1</SP> which converges towards the wheel flange 42<SP>1</SP> on the inner periphery of the wheel, the half axles tapering towards their inner ends which are mounted in bearing blocks 66 movable in vertical planes against springs 69 in housings 61 carried by the truck frame portion 62, the axes of the axles making angles of from 5 to 45 degrees to a line 41 joining the tops of the rails 15. The outer end 54 of each axle is frusto-conical and mounted in a part spherical bearing 56 in a part spherical seat 58 in a bearing block 53 mounted on a spring 52 in a side support 51 of the frame 62. The centre 59 of the part spherical seat and bearing, is directly above the associated rail 15.
Patent GB-1506837-A (GB)
Title: Washer cutting machine
IPC: B23B5/00
Filed: 1976-11-17
Abstract: 1506837 Cutting apparatus SCHOLIN INDUSTRIES Inc 17 Nov 1976 [15 Dec 1975] 47966/76 Heading B4B A machine for cutting a plurality of washers successively from a sleeve 5 of elastomeric material comprises a rotatable mandrel 4 adapted to receive and to hold the sleeve thereon, indexing means 10, 65 for advancing the sleeve on the mandrel a distance substantially equal to the thickness of a washer to be cut therefrom, a cutting knife 68 and actuating means for operating the indexing means. The mandrel is rotatable via a clutch 83, 84 and belt-and-pulley drive 81, 82 and surrounds a stripper rod 10 which is indexed incrementally by a releasable clamp device 23, 24 and piston- and-cylinder device 34, 35. The knife 68 is mounted on a carriage 69, Fig. 2; additional knives may be mounted on slides 73, 76.
Patent GB-1453152-A (GB)
Title: Method of accelerating the cure of polyurethaneureas
IPC: C08G18/65
Filed: 1974-11-06
Abstract: 1453152 Polyurethaneureas BRIDGESTONE TIRE CO Ltd 6 Nov 1974 [6 Nov 1973] 48050/74 Heading C3R Polyurethane prepolymers are cured by reaction with a polyamine in the presence of a catalyst which is an alkyl- or alkoxy-substituted benzoic acid of the formula wherein R is C 1-4  alkyl or alkoxy and n is 1, 2 or 3. Most preferably the catalyst is 2-methyl benzoic acid, but many others are listed.
Patent GB-1201370-A (GB)
Title: Disc brake
Inventor: TAKATA KOJI
IPC: F16D69/00
Filed: 1967-10-24
Abstract: 1,201,370. Disc brakes. SUMITOMO ELECTRIC INDUSTRIES Ltd. 24 Oct., 1967, No. 48325/67. Heading F2E. A disc brake has a pair of pads on opposite sides of the disc, the one nearer the central radial plane of the wheel being thinner than, and having a higher wear resistance than, the other. The one pad also has a lower coefficient of friction. The pads are arranged in a floating caliper brake having a single fluid actuator (13, Fig. 3, not shown) or in a brake having opposed actuators (9, 10, Fig. 2, not shown) acting on respective pads. The thin pad is arranged to save space on the wheel hub side of the disc. Reference has been directed by the Comptroller to Specification 1,059,299.
Patent GB-1061299-A (GB)
Title: Stable mixtures containing dithionites
Inventor: POSCHMANN FRANZ
IPC: D06L4/30
Filed: 1963-12-09
Abstract: A mixture containing a major proportion of one or more dithionites is stabilized by a minor amount of a dry, powdered, readily water-soluble synthetic polymer having a K value between 20 and 280, preferably between 40 and 50, which is not capable of reacting chemically with the dithionites under the conditions of storage and transportation.  The dithionites may be those of sodium and other alkali metals, or of zinc, or ammonium dithionite.  Polymers which may be used, in amount, say, 1 to 5%, include homo- and co-polymers of (meth)acrylic acid, (meth)acrylamide, vinyl alcohol, ethylenimine, vinylpyrrolidone and acetals, and polymers of diethylaminomethylene (meth)acrylamide.  The mixture may also contain carbonates, sulphates and polyphosphates.
Patent GB-1099899-A (GB)
Title: Non-flammable and shock-resistant catalyst composition
IPC: C08F4/32
Filed: 1966-10-31
Abstract: The bulk-polymerization of styrene is effected with a catalyst composition, stated to be shock-resistant and non-flammable, which comprises a dry, free-flowing intimate mixture of benzoyl peroxide (I) and stearic acid (II),both finely-divided, wherein the I:II wt. ratio does not exceed 3:7.ALSO:A composition, stated to be shock-resistant and non-flammable, comprises a dry, free-flowing intimate mixture of benzoyl peroxide (I) and stearic acid (II), both finely-divided, wherein the I:II wt. ratio does not exceed 3:7.
Patent GB-1172924-A (GB)
Title: Improvements in or relating to Light Fittings for Fluorescent Lights
IPC: F21V23/00
Filed: 1967-10-27
Abstract: 1,172,924. Lighting fittings. ADOLF SCHUCH K.G. 27 Oct., 1967 [1 June, 1967], No. 48864/67. Heading F4R. A light fitting for fluorescent lamps, for use especially in a humid atmosphere, comprises a shallow housing 1 having end faces 2 which are deeper at the centre than at the edges and are provided with recesses receiving cablegland fittings 4.
Patent GB-982162-A (GB)
Title: Leak detector
IPC: H01J41/02
Filed: 1962-12-31
Abstract: 982,162. Bellows. GENERAL ELECTRIC CO. Dec. 31, 1962 [Jan. 2, 1962], No. 49117/62. Heading FIN. [Also in Division G1 In an ionisation type vapour leak detector samples of the atmosphere in the vicinity of a closed container being tested are drawn by a vacuum pump 3 through a conduit 2, which is narrow relative to the cross-section of the region between the electrodes 62, 63, and pumped through a further relatively thin conduit 11 and a diffuser 12 to the ionisation chamber. The pump 3 is of the diaphragm type in which parts 23, 39, Fig. 1a, are given a relative vibratory motion by an a.c. fed actuating coil 30, the parts being mounted on a U- shaped arrangement comprising members 22, 24 and a resilient connecting link 25. Air is taken into a central chamber 49, Fig. 2, from the conduit 2 through channels 10, 48 and holes 53 Fig. 3 in diaphragm 52, when the parts 23, 39, move apart and is forced out through conduit 11 when they return. Screws 35, 38 provide adjustment for the pump stroke and frequency. The diffuser 12 is formed integral with the electrical socket 56, 57 for the ionisation chamber 14, and the heated cathode 62 of the chamber is U-shaped and suspended from a frame 61. Ions are attracted to a wire wound anode 63 by a battery 18 and a current meter in the supply indicates the presence of a leak. The test region need not be gas tight. Specification 950,188 is referred to.
Patent GB-1407536-A (GB)
Title: Pressurised aerosol spray can
IPC: B65D83/16
Filed: 1973-10-23
Abstract: 1407536 Pressurized dispensing containers T J SMRT 23 Oct 1973 [12 Jan 1973] 49210/73 Heading F1R A pressurized aerosol dispensing container without a dip tube has a tilting valve, the stem of which is fitted with an actuator 19 having an axial discharge nozzle 20 and a finger lever accessible through an opening 34 in a cap 18 rotatably mounted in a groove on the head of the container. The cap has a central opening 35 and the lever has a skirt 25 which is engageable with the dome 12 of the container to limit the tilt. Rotation of the cap to a suitable extent prevents access to the lever.
Patent GB-1462828-A (GB)
Title: Intumescent flame-retardant coating compositions
IPC: C09D5/18
Filed: 1974-11-14
Abstract: 1462828 Intumescent coating compositions HOECHST AG 14 Nov 1974 [30 Nov 1973] 49295/74 Headings C3P and C3R The composition consists of a film-forming binder, a liquid vehicle, a heat-carbonizing material, and an ammonium polyphosphate having a degree of polymerization of 400 to 800. Fillers and pigments may be present. Exemplified binders are vinyl acetate polymers and urea/formaldehyde resins. The liquid vehicle can be water or an organic solvent and the heat carbonizing material can be dicyandiamide or pentaerythritol. Other fire retardants such as chlorinated paraffin and chlorinated phosphates and fillers and pigments can be present.
Patent GB-1246316-A (GB)
Title: Polyethers and polysulphides containing halogen and their use as flame-retardants in styrene polymer compositions
IPC: C08L25/06
Filed: 1968-10-18
Abstract: 1,246,316. Halogenated polyethers; flame retarded styrene polymer composition. DAIICHI KOGYO SEIYAKU CO. Ltd. 18 Oct., 1968 [23 Oct., 1967; 11 June, 1968], No. 49538/68. Headings C3C, C3P and C3R. [Also in Division C2] The invention comprises compounds of the general formula wherein A is an alkoxy group containing 1 to 5 carbon atoms, an alkylthio group containing 1 to 5 carbon atoms, an alkanoyloxy group containing 1 to 5 carbon atoms, a phenoxy group, a phenylthio group or a halogen-containing derivative of any of said groups; R is a halogencontaining alkyl group containing up to 5 carbon atoms or a halogen-containing acyl group containing up to 5 carbon atoms, said alkyl or acyl group containing a vic-dihalo grouping; X is an alkyl group containing 1 or 2 carbon atoms, a phenyl group, a halogen-containing derivative of either of said groups or a hydrogen atom; Y 1 , Y 2  and Y 3  are independently oxygen or sulphur; m+n is 1 to 100; m is 1 or more; n is zero or 1 or more; and the segments and are arranged in any order subject to the limitations laid down for m and n; provided that A and Y 3 R do not simultaneously represent brominated alkoxy groups having up to 5 carbon atoms when n=0 and m = 1. The compounds are prepared by reacting an appropriate phenol, alcohol, fatty acid, thiophenol or meroaptan, or halogen-containing derivative thereof, with a glycidyl ether, ester or thioether or halogencontaining derivative thereof and, if appropriate, an alkylene oxide or sulphide or halogencontaining derivative thereof, and then introducing the appropriate halogen atoms into the product, or by first introducing the halogen atoms into the reactants and then carrying out the above reactions. The above compounds are used as flame-proofing agents for polymers comprising homopolymers of styrene or α-methylstyrene, or copolymers of either of these compounds with acrylonitrile, vinyl carbazole, acrylates, methacrylates, vinyl esters or butadiene, the copolymers containing at least 4% by weight of styrene or α-methylstyrene units, the polymers being in the form of foamed or non-foamed masses. Other materials which may be present are halogenated hydrocarbons, halogen-containing alkyl phosphates or phosphites, metal oxides such as antimony trioxide; and antioxidants. In examples 2-8, polystyrene, styrene/acrylonitrile copolymer, and A.B.S. resin, are stabilized.
Patent GB-1378238-A (GB)
Title: Adjustable grinding tool for brake cylinders and the like
IPC: B24B33/02
Filed: 1972-10-30
Abstract: 1378238 Grinding BESENBRUCH-HOFMANN Inc 30 Oct 1972 [28 Oct 1971] 49994/72 Heading B3D A grinding tool 10 for a hollow cylinder 58 having an end wall 56 formed with a central hole 57, such as a brake cylinder, comprises a cylindrical hollow hub 12, a plurality of arms 18 pivotally mounted at one end to one end of the hub, a plurality of grinding members 70 respectively removably mounted to the other end of each of the arms, and spring biased adjustment means 40, 42 in the hub bearing on the arms to yieldingly hold them in any one of a plurality of radially expanded positions determined by setting of the adjustment means. The hub 12 has an end wall formed with slots 16 receiving the ends 20 of the arms which are retained therein by pivots 22. The ends 20 are formed with notches 24 engaged by a head 38 of a plug 36, the opposite end of which abuts an adjustable nut 42 screwthreaded into the hub. Adjustment of the nut axially displaces the plug to pivot the arms 18 about the pivots to engage the grinding members 70 with the wall 60. A spring 40 acts between the plug and nut which can be locked in position on a screw 48 by a lock nut 47. The screw 48 is connected by a flexible shaft 52 to a fitting 54 engageable by a driving motor. A sleeve 55 surrounds the hub 12 and can be moved against a spring 53 to hold the arms in a closed position (Fig. 5, not shown), so that the grinding members 70 can be passed through the hole 57 in the end wall 56. A flange 62 on the sleeve limits the movement of the tool through the hole 57. The outer ends of the arms 20 are formed with side walls 32, Fig. 4, having holes for receiving a spring clip 74 the ends of which engage holes 72 in side walls 69 of shoes of the grinding members 70, the shoes being attached to stones 71. The ends of the arms have openings 27 formed with camming surfaces 28 which, upon rotation of the clip 74, retract the ends of the clips from the holes in the side walls 69 of the shoes.