baber/WOPTO huggingface dataset:
Patent GB-1004065-A (GB)
Title: Improved method of packaging a plurality of flat articles, and a package formed thereby
Inventor: PRATT ROBERT HUMPHREY
IPC: B65D75/58
Filed: 1963-11-29
Abstract: 1,004,065. Packages. PRATT MANUFACTURING CORPORATION. Nov. 29, 1963, No. 47205/63. Heading B8C. Articles such as surgical sponges, dressings &c. are arranged in staggered relationship in a wrapper comprising front and rear panels joined round the articles so that when the package is opened, individual articles may be removed while the others are gripped through the wrapper. In one embodiment articles 24, 25 are positioned in staggered relationship directly on a bottom panel 13 of the wrapping material and top panels 14, 15 are folded down. The panel 14 has a bent back flap 17 which is adhered at 19 to panel 15 and which facilitates opening. After folding back the panels 14, 15 as shown the first article 24 may be gripped independently of the second article while still protected by the top and bottom panel. The side edges of the package are sealed by double folds. In another embodiment the package may be formed with double fold seals on three sides and a single fold line on the other and be opened by tearing Figs. 4, 5, not shown. In a further embodiment, Figs. 6, 8, two groups of articles 234, 235 and 236, and 234<SP>1</SP>, 235<SP>1</SP> and 236<SP>1</SP> are in separate compartments, the sheet 210 having extensions 227, 228 folded inwardly and upwardly and secured by adhesive 229 to form a division and the adhesive being spaced inwardly of the package edge to leave unadhered portions which allow the package to be ripped open.
Patent GB-1069919-A (GB)
Title: Rubbery polyurethane composition and bushing assemblies incorporating it
IPC: F16F1/387
Filed: 1963-11-29
Abstract: A rubbery shock-resistant composition having a hardness of 20 to 80 on the Durometer D scale is formed from 100 p.b.w. flowable isocyanate-terminated polyurethane prepolymer, a cross-linking agent therefor, 2 to 15 p.b.w. silicone oil and 10 to 60 p.b.w. graphite. The prepolymer may be prepared from a polyether or polyester polyol and excess polyisocyanate. Specified cross-linking agents are triols and polyamines.  Additional polyisocyanate may also be used.  In the example, a composition is made from a prepolymer from tetramethylene ether glycol and tolylene diisocyanate, additional isocyanate, methylene bis-o-chloroaniline, graphite and 500 viscosity dimethyl silicone oil. The compositions may be used to provide bearing surfaces against which members in relative motion may slide or rotate as in bushing assemblies.
Patent GB-1517616-A (GB)
Title: Safety devices for combustible gaseous fluid distributing apparatus
IPC: F16K1/30
Filed: 1976-11-12
Abstract: 1517616 Valves L'AIR LIQUIDE SOC ANON POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE 12 Nov 1976 [25 Nov 1975] 47325/76 Heading F2V In an explosion arresting safety device for use in distributing acetylene a closure member 20, which is normally open and is biased towards a seat 11 by a spring 18 is formed as a piston guided in a member 13 and having an axial bore 25 connecting with radial bores 26 so that a reverse flow pressure wave at the outlet 3 immediately moves the closure member against the seat. The closure member is also guided by a spigot 21 moving in the seat which is held between tubular members 32, 13 by a circlip 14. A filter 7 and a flow limiter 31 are provided upstream of the seat.
Patent GB-1526408-A (GB)
Title: Magnetic lock
IPC: E05B47/00
Filed: 1975-12-01
Abstract: 1526408 Magnetic locks TIN WAH-CHEUNG 1 Dec 1975 [18 Nov 1975] 47404/75 Heading E2A  A magnetic lock has locking tumblers 1-20, magnetised at each end 22 and arranged in a matrix corresponding to a fixed key 42 at one end and a movable key 41 at the other. The tumblers have U-shaped portions embracing, above and below a ratchet 24, one edge or the other of the U having a pawl edge for engaging the ratchet so that correctly magnetised keys move them forwards or backwards to a releasing position. This enables springs 28, which have been compressed when sliders 29 have been forced in by closing the door, to move the ratchet so that it strikes a head H at the inner end of the latch bolt 25 sliding within the ratchet. The latch bolt is held in its fastening position by a magnet 26 on its nose and a magnet 27 in the keeper, and the impact of the ratchet severs their attraction. The bolt may be released by the insertion of a fixed magnetic key 42 or by a movable magnetic key 41 which also operates an additional tumbler 21 engaging a notch in the fixed key, to release it too. The region 33 behind the key-space 40, Fig. 1, accommodates a magnetically operated burglar alarm which is responsive to spurious magnetic stimulation.
Patent GB-1513939-A (GB)
Title: Method of manufacturing spherical polymer particles from polymer solutions
IPC: C08J3/16
Filed: 1975-11-18
Abstract: 1513939 Coagulating polymer solutions; porous beads CESKOSLOVENSKA AKADEMIE VED 18 Nov 1975 [26 Nov 1974] 47463/75 Headings C3L and C3C A process for the manufacture of spherical polymer beads from polymer solutions, wherein a polymer solution is dispersed or suspended, whilst stirring, in a liquid immiscible with the solvent in which the polymer is dissolved and which is a non-solvent for the polymer without formation of an emulsion, and the dispersion or suspension thus obtained is poured while stirring into an excess of a liquid coagulant of the polymer, which coagulant is miscible with the polymer solvent but immiscible with the dispersion medium, whereafter the two liquid phases are separated and the polymer beads are separated therefrom, wherein the volume ratio of the dispersed phase to the dispersion phase is from 1 : 1 to 1 : 30. The polymer solution may contain a solid or liquid which is insoluble in the dispersion medium and the coagulant, which is removed from the polymer beads by evaporation, or there may be present a solid which is insoluble in the polymer solvent and the dispersion medium, dispersed in the polymer solution, which is removed in the coagulant which dissolves the solid. The coagulant may react with the polymer in order to chemically modify the side-groups. Polymer solvent may be added to the coagulant and further coagulant may be added to the coagulated mixture. The spherical polymer beads may be cross-linked during or after coagulation The process may be effected continuously. In the Examples, (1) (2) polyacrylonitrile/dimethyl sulphoxide dispersed in paraffin oil is coagulated with water; (3) polyacrylonitrile/ dimethyl sulphoxide dispersed in paraffin oil is coagulated with aqueous sodium hydroxide solution which partially hydrolyses to acrylic acid units; (4) polyacrylonitrile/dimethyl sulphoxide in paraffin oil is added to 50% by weight aqueous dimethyl sulphoxide; (5) acrylonitrile is polymerized in the presence of 65% by weight aqueous nitric acid, urea, ammonium persulphate, acetylacetone and ferric chloride, whereby 40% of the polyacrylonitrile is hydrolysed, predominantly to acrylamide units with a minor proportion of acrylic acid units, the resulting solution is dispersed in gasoline in which atactic polypropylene is dissolved, and coagulated in water; (6) poly(2-hydroxyethyl methacrylate) is cross-linked with 2-hydroxyethyl methacrylate/ethylene glycol dimethacrylate in the presence of ethylene glycol, di-n-butyl ether and cumene hydroperoxide, the solution is dispersed in n-heptane and coagulated with sodium chloride solution; (7) methylmethacrylate/ vinylpyrrolidone copolymer in 1,2 - dichloroethane dispersed in glycerol is coagulated with light gasoline. Porous beads are obtained in (1) having a diameter of 0À2 mm. and 60% by volume of voids; (2) having a diameter of 0À5 mm. and 98% by volume of voids; (3); (4) having a diameter of 4 mm. by elution of urea nitrate with warm water; (6).
Patent GB-1272120-A (GB)
Title: Disc brake having an antirattle member
IPC: F16D65/097
Filed: 1969-09-29
Abstract: 1,272,120. Disc brakes. D.B.A. S.A. 29 Sept., 1969 [3 Oct., 1968; 21 March, 1969], No. 47693/69. Heading F2E. A floating or fixed caliper disc brake has a pair of friction pads 12 respectively slidably carried on opposite sides of the disc by a fixed support 10, and between each pad 12 and the fixed support 10 is interposed a resilient element 22 for limiting vibration of the pads 12 in the medial plane of the disc, the element 22 having at least one projection 28 extending towards the pad 12 in a direction substantially parallel to the face of the lining block 16 to affix the element 22 to a backing plate 14 of the pad 12 where the backing plate 14 is bare of lining block 16. In the embodiment of Figs. 1-4 the projections comprise lugs 28 which resiliently engage the backing plate 14. In the embodiment of Figs. 5 and 6 (not shown) the projections (29) have end portions (30) which are engaged in openings (26) in the backing plate (14). In the embodiment of Fig. 7 the disc brake is of the fixed caliper type and the backing plate of each pad has an opening 34 which receives a pin 38 on which the pad is slidable, and a tubular element 42 having lugs 46 is fitted in the opening 34. In the embodiment of Figs. 8 and 9 (not shown) the projection has a tubular element (52) snap-fitted into the hole 26 and as seen in the modification of, Fig. 10 (not shown), the tubular element (52) includes a contact (56) of a wear indicating device. In the embodiment of Figs. 11-14 the substantially tubular element 58 is formed as a part-tubular member 58 which has sheet metal lugs 60 formed with projections 64 to engage the holes 26. One hole 26 of each pad may receive a wear-indicating contact.
Patent GB-1352202-A (GB)
Title: Semiconductor devices
IPC: H01L27/088
Filed: 1971-10-13
Abstract: 1352202 Semi-conductor devices SIEMENS AG 13 Oct 1971 [13 Oct 1970] 47727/71 Heading H1K The electrical characteristics of two IGFET's in a common semi-conductor substrate 2 are caused to differ by appropriate selection of materials for the gate electrodes 6, 8, the essential requirement being that the work functions of the electrode materials differ. In one example both gate insulations 10, 12 are made of silicon dioxide, the gate electrodes 6 and 8 being made of Al and polycrystalline Si respectively. The gate insulations may also be of different materials, and other examples given are silicon nitride with an Ag electrode and aluminium oxide with a Ni electrode, Si, Ge and GaAs are referred to as suitable semi-conductor materials.
Patent GB-1160566-A (GB)
Title: Improvements in Superconductors and process for making same
IPC: H01L39/24
Filed: 1966-10-25
Abstract: 1160566 Electric solid state devices GENERAL ELECTRIC CO 25 Oct 1966 [8 Nov 1965] 47787/66 Headings H1A A5 A8 and A4D A laminated super-conductor tape comprises an inner super-conductor laminate with its major faces bonded at elevated temperature to outer laminae of non-superconducting metal of greater coefficient of thermal expansion so that on cooling, the outer laminae stress the inner super-conductor laminate into compression to provide a strong flexible structure for winding into coils. The outer laminate also assists in heat dissipation. The superconductor may consist of Nb 3 Sn formed by heattreating a tin coated niobium strip with an outer laminate of copper; a second outer layer of steel or nickel may also be provided. A process of manufacture is described Fig. 4 in which 3 strips 30 of Nb containing a small amount of Zr are fed into tin baths 31 and reaction chambers 32 containing oxygen to provide regions of Nb3Sn with dispersed zirconia and the tapes are then fed between copper tapes 34 into soldering bath 35 and finally wound into coil 36. Other materials suitable for super-conductors are tantalum, technetium and vanadium possibly reacted with metals such as aluminium, gallium and silicon; other materials suitable for the outer laminates are aluminium, gold, platinum and silver.
Patent GB-1031585-A (GB)
Title: Method of making spirally wound containers
Inventor: GLASBY FRANCIS GOFF
IPC: B21C37/12
Filed: 1964-11-27
Abstract: 1,031,585. Making tubes. ROBINSON & SONS Ltd. Nov. 27, 1964, No. 48306/64. Heading F2P. A method of making tubular containers of predetermined length each having a unitary pattern visible on the container consists in the steps of spirally winding tubing in a continuous manner from one or more strips of material, one of the strips bearing continuously repeated pattern sequences, cutting off lengths of the tubing in regularly repeated cycles by means of cuts placed in the region of pattern boundaries, each of the cut-off lengths containing a consistently repeating plural whole number of pattern sequences and containing tube material in excess of that required by the constituent containers, and simultaneously or subsequently cutting such a tube length at spaced distances equal to the predetermined container lengths thereby dividing the said tube length into containers and end trim material, whereby containers of the correct length are produced with unitary patterns in approximate register with the ends of the containers, all bands situated interiorly of the length of tube being absorbed into the containers and the excess tube material being trimmed off only at the end or ends of the stick. Each pattern sequence consists of a plurality of unitary patterns which appear on a numerically equal plurality of containers, and one or more periodic bands, one of the bands being situated at the end of each sequence, any other bands being situated interiorly of the sequence, and none of the interior bands being individually greater in width than the end band. The pattern sequences appear in regularly repeated end-to-end relationship along the continuously wound tubing and the periodic bands form circumferential bands which may or may not be visually distinguishable from adjoining portions of the adjacent unitary patterns on the continuously wound tubing.
Patent GB-1185132-A (GB)
Title: Diode Sensors for Liquid Level Detection
IPC: G01F23/24
Filed: 1968-10-14
Abstract: 1,185,132. Indicating liquid level. UNITED STATES ATOMIC ENERGY COMMISSION. 14 Oct., 1968 [20 Nov., 1967], No. 48492/68. Heading G4H. An indicator for the level of a very cold liquid comprises a series of junction diodes 15 mounted within the container a voltage source 23 connected across the diodes for sustaining forward current through the diodes the current through a diode being at one level when the diode is in the space above the liquid and less when the diode is in the liquid. Due to the discrete resistance change of each diode, the current through the series of diodes is proportional to the number of diodes in contact with the liquid. A corresponding voltage is developed across resistor 21 which is applied to the base of a transistor 27 to give an indication on a milliammeter 33 which may be calibrated in liquid levels. The diodes may be arranged in a straight line or in two lines staggered with respect to each other to obtain a finer response.
Patent GB-993202-A (GB)
Title: Improved workpiece tank for a spark erosion machine
IPC: B23H1/10
Filed: 1963-12-09
Abstract: 993,202. Spark erosion. NASSOVIA WERKZEUGMASCHINENFABRIK G.m.b.H. Dec. 9, 1963 [Dec. 22, 1962], No. 48539/63. Heading B3V. A workpiece tank 5 for a spark erosion machine has a liquid overflow which is adjustable to any level within the tank and locakable at this level. The overflow comprises a pipe 8 pivoted at 10 near the base of the tank and connected by cross member 19 to a parallel lever 21 on a stationary pivot 23. The pivot 10 is hollow and communicates with an outlet pipe 13, Fig. 2 (not shown). The cross member 19 is adjacent the mouth of the overflow pipe and carries a casing 20 which receives a float switch and a thermostat switch. Stepless adjustment to any level such as 29, 30 is provided by the linkage which has a handle 28 and can be locked in position by a knob 27, Fig. 3 (not shown) on the pivot 23. The tank has a drain channel 31.
Patent GB-1278839-A (GB)
Title: Improvements in and relating to circuits for fluorescent lamps and the like
Inventor: KREUTZINGER HANS
IPC: H05B41/04
Filed: 1969-10-06
Abstract: 1278839 Starting and operating circuits for fluorescent lamps H KREUTZINGER 6 Oct 1969 [22 Oct 1968 3 April 1969] 48966/69 Heading H2H A fluorescent lamp circuit comprises a controllable electronic switching device having a gating circuit connected across the lamp so as to control the conduction of the device according to the voltage across the lamp, whereby the device is switched on during an initial period, thus causing the lamp to start and to be switched off after the lamp has ignited. A fluorescent lamp 26 having filamentary electrodes is connected to an A.C. source 32, 34 by way of a thyristor 15 and a ballast 28. Gating potential for the thyristor 15 is developed by a circuit including a resistor 20 and a capacitor 22. Initially the thyristor 15 is non-conductive and a current to heat the lamp electrodes flows through the resistor 20 and capacitor 22 which current also charges the capacitor. After a predetermined period the capacitor becomes charged to a point where a device 24 breaks down causing the thyristor 15 to be gated and so as to start the lamp 26. Whilst the lamp is running the voltage thereacross is insufficient to charge the capacitor to the point at which the device 24 breaks down, thus the thyristor is not gated on. Numerous embodiments are described in which the lamp is a cold cathode lamp, in which the thyristor is replaced by a triac, in which the ballast is tapped and the tapped part switched into and out of circuit by thyristor arrangement similar to circuit 14. Furthermore, the operation of the thyristor 15 may be altered by means of a lamp and photoresistor or by temperature dependent resistors. In yet another embodiment a capacitor is arranged so as to resonate with the ballast 28.
Patent GB-1085600-A (GB)
Title: Mechanism for forming the bottom of bags
IPC: B31B160/20
Filed: 1965-11-18
Abstract: 1,085,600. Packaging. HOFLIGER & KARG. Nov. 18, 1965 [Nov. 21, 1964], No. 49060/65. Heading B8C. The base of a block-bottomed bag is formed by a pair of folding members 4, 5 acting upon a tube 3 of the bag-forming material, each member comprising two symmetrically arranged hinged flaps 8, 9 having their leading edges obliquely inclined. As shown, the members engage the sides of a plastics tube 3, while disposed at an acute angle relative to each other, and then open out to become coplanar under the action of levers 10-13. Simultaneously with the inward movement of the members welding jaws 18 close on the tube to seal the top of a lower bag, and sever the tube leaving a fin seal (19), Fig. 3 (not shown), across the base of the upper bag. The jaws then release the fin (19) and move laterally across the base of the upper bag to fold the fin (19) up and seal it to the base of the bag. Downward pressure provided by the folding members 4, 5; Fig. 1, facilitates this sealing process. The jaws are then opened and the bag is filled from above and lowered between the jaws, prior to formation of the top seal of the filled bag, and the folding of the base of the next bag. As described, the flaps 8, 9 of each folding member are mounted on supports (20), Fig. 5 (not shown), carrying ball-bearings (23, 24) which run in curved guide tracks (25, 26) in a plate (27), which is fixed relative to the angular movement of the flaps (8, 9) but which moves with the folding member (4) to and from its folding position.
Patent GB-1061047-A (GB)
Title: Processes of photographic reproduction
IPC: G03C5/315
Filed: 1963-12-12
Abstract: 1,061,047. Colloid transfer process. EASTMAN KODAK CO. Dec. 12, 1963 [Dec. 17, 1962], No. 49088/63. Heading G2C. Photographic images are obtained by exposing to a two-tone subject a substantially unhardened gelatino-silver halide emulsion layer, developing the exposed emulsion layer by means of an aqueous activator solution containing potassium carbonate and guanidine carbonate in the presence of both a tanning developing agent and a substantially non- tanning developing agent so as to develop a silver image in hardened gelatine in the highlight regions of the layer and also a silver image is substantially unhardened gelatine in the shadow regions of the layer, and transferring in the presence of moisture at least a thin stratum of the shadow regions of the layer to a support such as an absorbent paper support. 4-phenylcatechol and 4-methoxy-alphanaphthol may be used as the respective developing agents and may both be present in the emulsion layer. The activator solution may contain a sequestering agent e.g. ethylene diamine tetraacetic acid di, tri- or tetrasodium salt.
Patent GB-1112819-A (GB)
Title: Nozzle and stopper assemblies for the teeming of liquid metal
Inventor: SHARP JOHN DAVID
IPC: B22D41/16
Filed: 1964-12-03
Abstract: 1,112,819. Ladle nozzles. UNITED STEEL COMPANIES Ltd. 3 March, 1966 [3 Dec., 1964], No. 49293/64. Heading F4B. A nozzle and stopper assembly for a ladle comprises a nozzle 1 of dead burnt magnesite containing at least 85% MgO, having a frustoconical upper bore 2 engaged by a stopper end 4 of similar shape formed with a thread 8 engageable by a lifting rod. The nozzle may also be made of alumino-silicate containing 60% more Al 2 O 3 , chrome-magnesite, magnesitechrome, fused stabilized zirconia, zircon, silicon carbide or graphitized alumino-silicate containing more than 25% Al 2 O 3 . In a modification, Fig. 2 (not shown), the nozzle has a cylindrical bore with a flared entry, and the stopper a wide upper cyindrical part merged into a narrow lower cylindrical part by a curved surface. Another modification, Fig. 3 (not shown), has a nozzle with a wide upper cylindrical surface having a flared entry merged into the bore by a curved surface. The stopper has a cylindrical surface merging through a surface of reverse curvature into a narrow nose.