baber/WOPTO huggingface dataset:
Patent GB-845863-A (GB)
Title: Improvements in or relating to gabions
IPC: E02D29/02
Filed: 1955-08-15
Abstract: 845,863. Gabions. PENFOLD FENCING & ENGINEERING Ltd., and McKELL, K. Nov. 14, 1956 [Aug. 15, 1955], No. 23494/55. Class 68(2). A gabion blank is constructed of metal chainlink mesh with metal wire framework outlining the blank, the framework wire being threaded through the convolutions of the metal chain-link mesh. The blank may have panels 26, 27, 28, 29, 30, Fig. 1, forming the bottom and sides respectively of the assembled gabion, the panel 29 being extended so that a portion 21 thereof may be bent over to form the top when the gabion has been filled with earth or like material. Two bendable rectangular metal frames 22, 23 form the outline of the blank, a wire 35 passed through the convolutions of the mesh and hooked at its ends around the frame 23 marks the fold line in the panel 29 to delineate the top portion 21, and wire 36 threaded through the convolutions of the mesh and hooked around the frame 23 is also passed through the mesh which forms a partition 20 and thus provides a hinge wire therefor. The remaining sides of the partition 20 are outlined by a wire 37. In a modification the panels 28, 30 are formed separately from the remainder of the blank and each is outlined by a separate rectangular wire frame, the panels 28, 30 being hinged by clips 40, Fig. 7, to the frame surrounding the remainder of the blank. In a further form six separate panels are hinged together by clips.
Patent GB-1083034-A (GB)
Title: Manufacture of shaped articles by vacuum forming
Inventor: JONES-HINTON JAMES
IPC: B29C51/34
Filed: 1963-06-13
Abstract: 1,083,034. Vacuum moulding. DUNLOP CO. Ltd. May 27, 1964 [June 13, 1963], No. 23508/63. Heading B5A. A male or female moulding member, for use in a vacuum forming process, has at least part of its forming surface made of a resilient material, e.g. foamed or unfoamed synthetic or natural rubber, so as to enable it to be easily withdrawn from any undercut portion of the formed article. In Fig. 1 (not shown) a sheet of polypropylene is drawn to the shape of a wheel over a vacuum mould (1), a lip (8) being formed by a ring (9) of non-cellular vulcanized rubber. In a second embodiment, shown in the Figure, a female vacuum mould, comprising a ring 28 and a shaped central disc 29 seated in a flanged backing member 23, is used to form a wheel from a sheet 35 of polypropylene. The mould cooperates with a male plunger comprising a backing member 21, to which is bonded a ring 22 of foamed rubber having a lip 23, which lip forms the undercut portion 33 in the finished article.
Patent GB-1223883-A (GB)
Title: Package for articles such as photosensitive sheets, and method and apparatus for opening such packages
Inventor: FESSENDEN JOHN RICE
IPC: G03B19/02
Filed: 1968-05-17
Abstract: 1,223,883. Package with pull tab for opening. EASTMAN KODAK CO. 17 May, 1968 [19 May, 1967], No. 23531/68. Heading B8C. A package comprises a tray and a cover sheet secured to the peripheral edge of the tray, a generally straight line of weakness extending across the cover sheet and dividing the cover sheet into first and second sections, and a pull tab extending from one end of the first section, overlying the whole length of this section and projecting beyond the other end thereof. As described, the tray 10 contains photosensitive (e.g. X-ray film) sheets and the package is shown within a light-proof compartment 20. Fig. 3 shows the tab 15 being pulled through a slot 25 formed in a door 22 of the compartment, the first section of the cover sheet 13 thus being torn away from the package to reveal the upper portions of the photosensitive sheets 17 (Fig. 1). The tab, apart from its free end, is of the same width as the first section, Fig. 2 (not shown). The cover sheet may be of polyethylene, oriented to form a plurality of lines of weakness. The cover may comprise a laminate of the oriented polyethylene, a layer of opaque aluminium foil and a black, heat-sealable layer. Alternatively, a single line of weakness may be provided, e.g. by forming partial perforations in the cover sheet. The light-proof compartment shown includes sealing formations 23, 24 round the edges of the door 22 and door frame, flaps defining the edges of slot 25 to render the latter light-proof, and suction cups 28 for removing successive sheets 17 from the package.
Patent GB-225958-A (GB)
Title: An improved silencer for gaseous current
IPC: F02M35/14
Filed: 1923-09-21
Abstract: 225,958. Smith, S., and A.C. Cars, Ltd. Sept. 21. 1923. Spray carburettors.-In a silencer applicable to the air inlets of carburettors and comprising a hollow body 8 with peripheral air inlets 9 and a closed end, longitudinal bars 4 around the body 8 but spaced therefrom, and a number of coils or rings 1 of wire or the like arranged on the bars 4 with narrow gaps through which the air enters, the inlets 9 mav be adjusted by means of a rotary member 10 having ports 12 and a control lever 14, or a butterfly valve may be provided in the body 8.
Patent GB-337077-A (GB)
Title: Improvements in furniture, chairs, settees and the like
IPC: A47C3/029
Filed: 1929-08-01
Abstract: 337,077. Lane, J. C. Aug. 1, 1929. Rocking seats.-A rocking chair, settee or the like comprises rockers A pivoted at a' to the front legs E, within the chair frame, and struts B, pivoted at b' to the framework and adapted to engage at their lower ends with the top surfaces or the side surfaces of the rear portions of the rockers to hold them in a lowered operative position or in a raised non-operative position respectively. The struts B may be actuated against the action of springs D, by a manually operated cord c, c<1>.
Patent GB-372649-A (GB)
Title: Improvements in or relating to the insulation of fixed electrodes of electrostatic loudspeakers
IPC: H04R19/00
Filed: 1931-08-24
Abstract: <PICT:0372649/III/1> <PICT:0372649/III/2> An insulating layer is applied to a perforated fixed electrode of an electrostatic loudspeaker by moving a vessel d, Fig. 2, containing varnish and having a perforated bottom e covered with a layer of permeable material f, to and fro over the electrode under a constant and gentle pressure.  Such a method ensures that the insulating means c is pressed over the apertures in the electrode, as shown in Fig. 3.  Any unevenness in the layer may be subsequently dissolved away.
Patent GB-1198567-A (GB)
Title: Improvements in or relating to Electric Discharge Devices.
Inventor: BELLAU RODNEY VICTOR
IPC: H01J1/308
Filed: 1968-05-17
Abstract: 1,198,567. Electron beam apparatus; cathode materials; semi-conductor devices. GENERAL ELECTRIC & ENGLISH ELECTRIC COMPANIES Ltd. 9 May, 1969 [17 May, 1968], No. 23726/68. Addition to 1,134,681. Headings H1D and H1K. The electric discharge device claimed in Claim 1 of Specification 1,134,681 is modified in that the semi-conductor cathode body 1 is provided with at least one recess which is in the form of an "annular" channel 5, i.e. it forms a closed loop around a central "island" 2a, and which penetrates the N-type surface layer 2 and the PN junction 4 into the P-type layer 3 of cathode body 1. Preferably the reverse bias voltage applied across the PN junction to cause electron emission from the exposed areas of the junction is applied only to the "island" portion 2a via gold contact 7. The semi-conductor material may be silicon carbide doped N- and P-type respectively with nitrogen and aluminium. The annular channel 5 is preferably circular in plan but may, for example, be square, rectangular or of closed labyrinth form, and the semi-conductor body may contain more than one of such channels 5 giving a corresponding number of precisely located cathode regions, for example, for a multiple beam cathode-ray tube in which the emission from each "island" canbe independently controlled. To obtain increased emission a recess as described in the parent Specification may be provided in the "island" so that emission takes place from both the inner and outer peripheries of the annular "island" so formed. The cathode may be subjected to a preheating, activating treatment by applying either a forward- or a reverse-bias voltage between a metal base-plate supporting the P-type layer and a contact 6 on the N-type layer located outside the annular channel, the "island" portion of the semi-conductor thus being heated indirectly to avoid overheating. Alternatively, the contact 6 may be omitted and the cathode self-activated when the operating reverse bias is applied, a getter being provided in the discharge device to take up the evolved gases. The internal surface of the channel(s) may be provided with a vapour deposited barium or caesium work function reducing coating. An example with dimensions is given. The discharge device in which the cathode is incorporated may also be an ionization gauge, an electron microscope, a mass spectrometer or a T.V. camera tube.
Patent GB-764504-A (GB)
Title: Improvements in or relating to ships' windows or side scuttles
IPC: B63B19/00
Filed: 1954-08-16
Abstract: 764,504. Cabin lights. UTLEY, T. July 22, 1955 [Aug. 16, 1954], No. 23729/54. Class 113. In a ship's window or side scuttle comprising a spigot tube 10 adapted to be entered and secured within an aperture of a ship's plating X, a light frame 14 and deadlight 15 hinged at 13 to the spigot tube, sealing rings 22, 23 disposed between the spigot tube and light frame and the latter frame and deadlight, and swivel bolts 18, 19 secured to lugs 16 of the spigot tube for engaging lugs 14a, 15a of the light frame and deadlight to secure same in watertight position, the spigot tube is provided with support lugs 11a in register with the lugs of the light frame and deadlight, and radially outward extensions 22a, 23a of the sealing rings extend on each side of each swivel bolt.
Patent GB-301572-A (GB)
Title: Improvements in or relating to swabs and swab holders for medical purposes
IPC: A61F13/40
Filed: 1927-09-09
Abstract: 301,572. Johnson & Johnson (Gt. Britain), Ltd., (Johnson & Johnson). Sept. 9, 1927. Capsules.-A swab 8 has a portion 6 wetted with a medicament, for example iodine, mercurochrome, or other antiseptic, the remainder 5 having been treated with ceresin or other wax, silk gum, &c., to render it liquidrepellent and form a handle. A glass or other cover 7 is cemented by collodion, &c., 11 to the handle portion 5 and is pulled off before use. A wrapper of paper, or a first-aid dressing 12, Fig. 4, may surround the cover 7. The swab may be made of cotton fibre.
Patent GB-1217185-A (GB)
Title: Improved centrifugal clutch
IPC: F16D43/22
Filed: 1968-05-20
Abstract: 1,217,185. Friction clutches. McCULLOCH CORP. 20 May, 1968 [5 June, 1967], No. 23812/68. Heading F2C. A friction clutch for a chain saw comprises centrifugally-expanded, garter-spring 38 retracted segmental shoes 27, 28 &c. which at low speed are retracted and concentrically located (Fig. 4A, not shown) within a driven clutch drum 7, integral with a driven sprocket 9, by pairs of circumferentially spaced arcuate cam seats 21, 22 formed on a moulded plastics carrier 16 fast with a driving shaft 3 on which the driven clutch drum is freely journalled, clutch engaging centrifugal pressure, on increased speed, being augmented by the action of one or other cam seat 21 or 22 of each pair, depending on rotational direction, which maintains full engagement with the corresponding seat 32 or 33 on the shoe 27 (Fig. 4B, not shown) to additionally thrust the shoes into engagement with the drum 7. The plastics carrier 16 has side walls 25, 26 serving to axially locate and radially guide the clutch shoes, and has an embedded metal centre bar 11 providing a suitable attachment (e.g. tapered key slotted hole) to the drive shaft 3.
Patent GB-385353-A (GB)
Title: Improvement to prams, baby carriages and such like vehicles
IPC: B62B9/20
Filed: 1931-08-25
Abstract: 385,353. Pushbars for perambulators. BEARD, E., Rose Villa, North Parade, Monmouthshire. Aug. 25, 1931, No. 23834. [Class 108 (ii).] A bar a is adapted to be secured to the main longitudinal rods f of the perambulator handle at such a height as to enable a child either to help propulsion or to steady itself when standing. The bar a may be provided with adjustable clips a adapted to clip over the rods f.
Patent GB-189873-A (GB)
Title: Method of, and apparatus for, producing, in a continuous manner, tungsten compounds fom tungsten ore
IPC: C22B34/36
Filed: 1921-09-08
Abstract: 189,873. British Thomson - Houston Co., Ltd., (General Electric Co.). Sept. 8, 1921. Liquid and gaseous fuel furnaces.-For the production of sodium tungstate from tungsten one by a continuous process, a powdered mixture of tungsten ore, sodium carbonate, and sodium nitrate from a hopper 10 is fed by a gate 19 to a band conveyer 12 supported by a shelf 18. The conveyer 12 discharges the mixture into a hopper 21 which discharges into a casing 22 integral with a screw conveyer 23 and containing vanes 25 and a screw 26. To the conveyer 23 is attached a chain 46 which prevents the material from balling when it falls into the, inclined rotary tube 24. The tube 24 carries a hub 43 which receives the conveyer 23, and the space between the hub 43 and the tube 24 is packed with heat-insulating packing 45. The tube 24 is rotated by a motor 39 and is set in a furnace divided into sections 50, 51, 52 which are heated by gas burners 53, 54, 63. The floor of these chambers slopes upwards as shown at 57, Fig. 2, the burners being set at one side. The chambers are heated so that the material is brought to and maintained at a semi-fluid state. Near the lower end of the tube are openings 60 with strengthening ribs 61 between them on the outside, and plates 62 between them on the inside to prevent the charge from passing to the closed end of the tube. The material is prevented from clogging the discharge openings by the flame from the burner 63, Fig. 3, which is directed upon the tube. Specifications 5457/80, [Class 1, Acids, alkalies, &c.], 13323/87, and 9375/15, are referred to.
Patent GB-894292-A (GB)
Title: Improvements in or relating to hydraulic props, particularly pit props
IPC: E21D15/45
Filed: 1957-07-30
Abstract: 894,292. Hydraulic pit props. MASTABAR MINING EQUIPMENT CO. Ltd., TEBB, B., and PERRY, C. H. July 23, 1958 [July 30, 1957], No. 24074/57. Class 20(2) An hydraulic telescopic pit prop comprises a cylinder 10 having a reservoir piston 14 with a head formed of two parts 24, 26 which may be manually separated to allow fluid from the pressure chamber 18 to flow between them to the reservoir 16 in order to release the prop. The prop is set by piston pump 38 operated by a crank 48 and a handle which when moved beyond its normal stroke causes the pump piston 40 to force the piston head part 26 down against springs 36 providing a passage past a sealing ring 34 between the two piston head parts. Specification 802,804 is referred to.
Patent GB-495138-A (GB)
Title: Improvements in buffers and edgings for sliding doors
IPC: B60J5/06
Filed: 1937-09-06
Abstract: 495,138. Doorstops. OVERTON, W. Sept. 6, 1937, No. 24249. [Class 65 (i)] A buffer for a sliding door comprises a U-shaped member a fixed by flanges b to the door edge or jamb and co-operating with a resilient member d, f, fixed to a rigid channel c on the jamb or door edge. The sides f project beyond the sides of c and are turned back to form resilient lips h which close on the member a and act as buffers for the flanges b.
Patent GB-268662-A (GB)
Title: Improvements in show cards
IPC: G09F1/04
Filed: 1926-10-04
Abstract: 268,662. Cleland, Ltd., W. W., and Luce, R. C. Oct. 4, 1926. Card and like stands.-In collapsable showcards of the type comprising a plane display card &c. 1 having a pair of vertical guide slots 12 and hinged to a flap 8 which in turn is hinged to a further plane card &c. 2 having side flaps 3, 4 hinged vertically, the two plane cards 1, 2 are connected together by flat portion 8 detachably connected to one of them and either detachably or permanently hinged to the other.
Patent GB-752734-A (GB)
Title: Loom picker and method of manufacturing same
IPC: D03D49/36
Filed: 1954-08-24
Abstract: 752,734. Pickers for looms. DAYTON RUBBER CO. Aug. 24, 1954 [Sept. 1, 1953], No. 24550/54. Class 142 (2). A loom picker formed of layers of rubberized fabric has one or more resilient inserts embedded in its forward portion, and is vulcanized to form a unitary structure. The picker is made of layers 28 of rubberized fabric alternating with layers 29 of resilient material and an external wrapping 14 of rubberized fabric which also forms a loop 10 for the picker stick 12. The layers 28, 29 may have a wrapping of rubberized fabric  before the wrapping 14 is applied. The fabric may be made of cotton, nylon, rayon or glass or blends thereof and is square woven and cut on the straight. Natural or synthetic rubber may be used for the inserts and for impregnating the fabric. The fabric may also be impregnated with a thermosetting synthetic resin. A recess 16, to receive the shuttle tip, is moulded in face 15 and an insert 13 partially surrounds the recess, which may be hemispherical, conical or parabolic.
Patent GB-1166587-A (GB)
Title: Improvements in and relating to Hand Tools
Inventor: JOHNSON GARY LEE
IPC: B25G1/10
Filed: 1968-05-23
Abstract: 1,166,587. Hand-tool handles; pliers &c. E.T.M. CORP. 23 May, 1968 [24 May, 1967], No. 24605/68. Headings B4K and B4W. A hand-tool, e.g. pliers, cutters, tweezers, or probes, includes a strap of adjustable length whereby the tool can be mounted on a single finger of an operator such that several tools, so mounted on separate fingers of a hand, can be brought into selective use by the fingers and thumb. The strap may comprise two cloth or plastics strips 25, 26 carrying respectively hook and loop material, one end of each strip being secured to the tool and the other ends forming an adjustable length loop 24. The strips are secured to the handle of the tool by passing slots 27 in the strips over hooks 22 formed on a dished plate 20 welded or soldered to the tool where the tool is a pair of cutters, which may have angularly offset nose portions (33), (Fig. 4, not shown), a dished plate 20 may be provided on each arm so that the strips can be attached to either. A spring 18 urges the cutter jaws open and also limits the degree of opening.
Patent GB-934336-A (GB)
Title: Melt-spinning of polymers
IPC: D01D5/08
Filed: 1962-06-27
Abstract: <PICT:0934336/IV(a)/1> In the melt-spinning of fibre-forming polymers a similar electrical potential is applied to each filament during extrusion, so that the filaments repel one another.  The polymer may be melted by heating and forced under pressure through a plurality of fine holes in a spinneret plate, the plate being electrically insulated from ground and having applied thereto a substantial electrical potential, i.e. a positive or negative but not alternating voltage above 500 volts and in general up to about 20 kv.  Polymers specified include nylons, polyformaldehyde, polyurethanes, polyvinylidene chloride, and polyesters, e.g. polyethylene terephthalate, polyethylene and polypropylene.  In apparatus as shown, the spinneret plate 6, together with its supporting block 7, bolt 8 and filter 9, is electrically insulated from the pack 1 by insulating sheath 14 and insulating ring 15.  A D.C. voltage is applied to the plate 6 by the lead 17 from the voltage source 18, lead 17 being insulated from pack 1 by insulating bushing 19.  The spinneret pack 1 is grounded at 20. The filaments 10 thus repel one another, and the chance of filament coalescence is reduced.  Horn 21, which is also raised to the potential of plate 6 prevents the charged filaments being attracted to ground on the spinning pack at, e.g. point 22.  The spinning pack may alternatively be so designed as to eliminate the need for horn 21.  In a modification, lead 17 does not pass through pack 1 via bushing 19, but is attached directly to bolt 8 or horn 21.  When spinning polymer melts having significant electrical conductivity, e.g. nylons, it is necessary to insulate not only plate 6 but also the spinning pack 1 to prevent an excessive leak of current to ground.  This is suitably effected by putting the electrical insulation before the heater 5 (Fig. 1, not shown) and raising all the apparatus downstream of the hopper 3 (Fig. 1, not shown) to a high voltage, the ground connection at 20 being removed. When spinning polymer melts having very high electrical resistance, e.g. polyethylenes, the charged spinneret plate 6 does not provide an adequate time of contact for charge collection by the filaments.  In this case also the spinning pack 1 is insulated so that the whole part can be charged, but it is not necessary to insulate the pump 2 and heater 5 (Fig. 1, not shown).  The apparatus of Fig. 2, in which only the spinneret plate 6 and its surroundings are charged, is especially suitable for polymers of intermediate properties, e.g. polyethylene terephthalate.  A spin finish may be applied to the yarn before it reaches guide 11, suitably by electrostatic spraying, the nozzle of the spin finish applicator being charged to an opposite polarity to that of the spinneret plate.
Patent GB-709886-A (GB)
Title: 1,1,3-trichloro-3,3-difluoropropene
Inventor: RUH ROBERT PALMER
IPC: C07C17/25
Filed: 1952-10-02
Abstract: The invention comprises 1,1,3-trichloro-3,3-difluoropropene.  A method of producing 1,1,3-trichloro - 3,3 - difluoropropane comprises subjecting 1,1,1,3-tetrachloro-3,3-difluoropropane to the action of an aqueous solution of an alkali metal hydroxide at elevated temperature.  In an example aqueous potassium hydroxide is dropped into stirred 1,1,1,3-tetrachloro-3,3-difluoropropane heated under reflux.  After prolonged heating the organic layer is separated, washed with water, dried over calcium chloride and fractionated to obtain the desired product.  The product is employed as a fumigant (see Group VI).ALSO:A fumigant composition comprises as the active ingredient 1, 1, 3-trichloro-3, 3-difluoropropane (see Group IV(b)) together with a diluent.  The effectiveness of the product is tested at two concentrations against black carpet beetle larvae and confused flour beetle adults in a fumigation vault.
Patent GB-731776-A (GB)
Title: Improvements in wooden shelving
Inventor: GIESSEN CORNELIS JAN VAN DER
IPC: A47B57/34
Filed: 1953-09-08
Abstract: 731,776. Brackets; shelving. BRUYNZEEL'S SCHAVERIJ N.V. Sept. 8,1953, No. 24814/53. Classes 52 (1) and 52 (5). Wooden shelves 7 having recesses to engage around vertical supports 1 are provided with angle-bars 8 on their undersides which engage in the U-shaped ends 5 of metal fittings 4 which fit into slots 3 provided in each vertical support.
Patent GB-1059390-A (GB)
Title: An amusement device
IPC: B62K17/00
Filed: 1964-06-16
Abstract: 1,059,390. Pedalling devices. D. E. ARTHUR. June 16, 1964 [Sept. 12, 1963], No. 24837/64. Heading A6M. A pedalling device, on which a person can propel himself over the ground, comprises three discs or wheels 1 parallelly arranged on a common axis 3 and each joined eccentrically to the other by a shaft 7 carrying a rotatable pedal 4, the said shafts being arranged diametrically opposite each other on the centre disc or wheel.
Patent GB-227166-A (GB)
Title: An improved method of uniting two metal parts together
IPC: B23K31/02
Filed: 1923-10-05
Abstract: 227,166. Rosak, K., and Schnellwerkzeug Ges. Oct. 5, 1923. Drawings to Specification. Milling-cutters; compound forms.-A cutter of tool steel which blisters when sufficiently heated, is united with the iron body of a tool by covering the surfaces to be united with a deoxidizing medium, which melts below 1200‹ C. but which is not consumed or vaporised at a welding-temperature and the parts to be united are heated to 1200' C. and over so as to cause blisters to form on the surface of one or both metals with sufficient violence to penetrate the interposed film of the de-oxidizing medium and effect a direct melting together of the two metals without the application of pressure. A suitable de-oxidizing medium is copper preferably in the presence of borax.