baber/WOPTO huggingface dataset:
Patent GB-1480081-A (GB)
Title: Methods of producing printing masters by spark-recording
IPC: B41N3/08
Filed: 1974-09-09
Abstract: 1480081 Spark-recording sheets RICOH KK 9 Sept 1974 [18 Sept 1973 26 Sept 1973 (2) 3 Oct 1973 (2) 26 Nov 1973 3 Dec 1973] 39222/74 Heading D2B [Also in Division B6] A spark-recording medium comprising a metal layer vacuum-deposited on a support is desensitised before or after imaging to provide an offset printing master (see Division B6). The support is generally paper or a plastics film which may be coloured; alternatively a coloured layer of olephilic resin and pigment is provided between the support and the metal. The metal layer is preferably aluminium, whose surface has been roughened; the support and the coloured layer are also preferably roughened. A protective layer of hydrophilic polymer, or an acid-soluble compound of a polyvalent metal in combination with a hydrophilic or an oleophilic polymer may be provided over the metal to prevent mechanical erosion. Although a desensitising liquid may be applied to the imaged material, it is also possible to incorporate a desensitizing layer over the metal or protective layer prior to imaging. Such a layer consists of a silicone elastomer, varnish or oil, a fluorocarbon or mixtures of hydrophilic polymers e.g. gum arabic or sodium carboxymethyl cellulose with phosphates.
Patent GB-839240-A (GB)
Title: Reaction products of bis(2:3-epoxycyclopentyl) ether with a polycarboxylic acid
IPC: C08G59/42
Filed: 1957-12-18
Abstract: A resin is made by reacting bis-(2 : 3-epoxycyclopentyl) ether with a polycarboxylic acid.  The polycarboxylic acid may be in the form of a polyester having two or more free carboxyl groups and obtained by polyesterifying excess of a polycarboxylic acid or anhydride with a polyhydric alcohol.  The reaction mixture may also contain a polycarboxylic acid anhydride in an amount such that if there are x carboxy equivalents of anhydride per epoxy equivalent and y carboxy equivalents of acid per epoxy equivalent then x + y is not greater than 2.5 and x/y is less than one.  Many polycarboxylic acids, polyhydric alcohols and polycarboxylic anhydrides are specified. Reaction with the epoxide is generally effected at 50-250 DEG  C., preferably using as a catalyst a mineral acid, a sulphonic acid, a metal halide Lewis acid or a complex thereof.  The resins are suitable for use in coatings, castings, mouldings, bondings, laminates and potting electrical components and may be made into buttons, combs, brush handles or structural parts for instrument cabinets.  Fillers, e.g. glass fibres, asbestos, iron oxide or aluminium oxide may be added.  Examples describe the making of resins from bis-(2 : 3-epoxycyclopentyl) ether and (1)-(14) glutaric, adipic, pimelic, sebacic or ethylbutenyl succinic acids, (15) glutaric acid and glutaric anhydride.  Further examples (16)-(30) describe making resins from bis-(2 : 3-epoxycyclopentyl) ether and polyesters from succinic anhydride and glycerol, succinic anhydride and 1,2,6-hexanetriol, succinic anhydride and pentaerythritol, maleic anhydride and ethylene glycol, dichloromaleic anhydride and ethylene glycol, phthalic anhydride and ethylene glycol, or adipic acid and glycerol.  Specifications 839,238 and 839,239 are referred to.
Patent GB-889071-A (GB)
Title: Turbo-generator rotors with improved cooling arrangements
IPC: H02K3/24
Filed: 1959-11-20
Abstract: 889,071. Dynamo-electric machines. ALLMANNA SVENSKA ELEKTRISKA A.B. Nov. 20, 1959 [Nov. 27, 1958], No. 39389/59. Class 35. In a turbo-generator rotor constructed to allow the entry of a ventilating medium at both its ends and comprising a field winding having end windings 3 arranged between an enclosing retaining ring 4 and an interior cylindrical shield 5 having openings 7a through which at least part of the ventilating medium is directed into spaces 22 between the end windings, the shield 5 is radially spaced from the end windings to provide therebetween an annular gap 9 which is divided into inlet and outlet chambers for the medium. The chambers are defined by electrically insulating plates 6 which support the shield 5, blocks 16 which space apart the end windings, bars 19, and arcuate members 11. Thus part of the medium stream appears to flow through the openings 7a, the inlet chambers, the spaces 22, openings 12 in blocks 16, adjacent spaces 22, the outlet chambers, axial passageways and radial ducts of a retaining-ring support ring 20, to discharge radially at 13 the ducts acting as a fan. Another part 18 of the medium stream passes through radial openings 7b in the shield 5 and members 11 and then axially between the end windings to the outlet chambers. Yet another part 17 of the stream flows through shield apertures 14 to axial passageway 15 in the rotor core 1.
Patent GB-1525860-A (GB)
Title: Agent for intravascular administration
IPC: A61K51/12
Filed: 1975-09-26
Abstract: 1525860 Radioactively labelled reagents PHARMACIA FINE CHEMICALS AB 26 Sept 1975 [27 Sept 1974] 39519/75 Heading A5B A reagent comprises particles having a particle size of 300 micrometers or less, when in a water swollen state, labelled with at least one metallic radionuclide, the particles being insoluble but swellable in water and comprising a polymeric or polymerised carbohydrate or sugar alcohol or a physiologically tolerable derivative thereof, the particles having covalently-bound chelate-forming groups to which the radionuclide is bound in a chelate complex comprising at least four 5- or 6-membered rings comprising the metal, and two metal co-ordinating atoms separated from each other by two or three atoms, one of the metal co-ordinating atoms being a nitrogen atom and the other a nitrogen, sulphur or oxygen atom, which oxygen atom is part of a carboxylate, sulphonate or phosphonate group.
Patent GB-1045070-A (GB)
Title: Air controlled wet-jigging machine
Inventor: HAACKE ALBRECHT
IPC: B03B5/20
Filed: 1965-09-16
Abstract: 1,045,070. Jig-washers. SCHUCHTERMANN & KREMER-BAUM A.G. FUR AUFBEREITUNG. Sept. 16, 1965, No. 39604/65 Heading B2H. The air control valves 8, 9 for the admission and discharge of compressed air to the pulsation chambers 6 provided below a screen 5 are located directly on the side walls of the settling vat which walls form the ends of the pulsation chambers. Each pulsation chamber is open at the bottom, Fig. 2 (not shown) and fluid-operated disc valves 8, 9 are employed to control the air, the operating fluid being controlled by a cam shaft; alternatively, rotary slide or reciprocating piston valves may be employed instead of the disc valves.
Patent GB-1284129-A (GB)
Title: Film cartridge
Inventor: MARTIN WILLIAM ALLEN
IPC: G03B17/26
Filed: 1969-08-08
Abstract: 1284129 Cine film cartridges EASTMAN KODAK CO 8 Aug 1969 [13 Aug 1968] 39790/69 Heading G2E A film cartridge for use in a cine camera comprises a supply chamber 22 in which film coil 42 is supported on partition 26, the film being driven by engagement with an intermittent feed device of the camera to pass over guide 50 behind pressure pad 54, through channel 59, and into hollow feeder arm 66 which directs the film end down through opening 37 in partition 26 to engage one of a plurality of recesses (75) in the side wall 33 of a freely rotatable cup-shaped holder 30 within take-up chamber 28. The forward movement of the film causes the holder 30 to rotate and the film to coil inwardly therein. Pin 70 at the exit end of feeder arm 66 rides on the inner face of the take-up film coil to cam the arm 66 inwardly about spindle 68, this movement shifting a footage indicator arm 100 visible through aperture 104 in housing 14. For sound recording, slide 60 defining channel 59 is cammed to the right on insertion into the camera to expose apertures 80 and 96 through which the film leaves and returns to the cartridge before entering arm 66.
Patent GB-1080341-A (GB)
Title: Improvements in or relating to fluid modulating devices
IPC: F15C1/14
Filed: 1964-09-30
Abstract: 1,080,341. Pure fluid amplifiers. JOHNSON SERVICE CO. Sept. 30, 1964 [Sept. 30, 1963], No. 39875/64. Heading G3H. A pure fluid amplifier comprises a power jet nozzle 11, an output nozzle 14 and a control jet nozzle 17 opening to a chamber 12. The control jet is supplied to a tube 19 having an outlet orifice 20 smaller than the nozzle 17, the tube being adjustable axially to vary the spacing between the orifice 20 and nozzle 17 and hence the pressure emitted from the nozzle 17. The control stream may be a separate signal supply or a feedback signal from the amplifier outlet. The Specification discusses the theory of the relative sizes and spacing between the nozzles.
Patent GB-1523305-A (GB)
Title: Athode ray tube electron gun
IPC: H01J29/50
Filed: 1975-09-30
Abstract: 1523305 Electron guns RCA CORPORATION 30 Sept 1975 [4 Oct 1974] 39965/75 Heading H1D A plural beam (e.g. two, or three beam) shadow mask C.R.T. has a plurality of grids 27, 29 each with a plurality of apertures aligned with the beams, and elongated (e.g. elliptical) transverse to the line-scan direction, the elongated apertures of one beam path having a shape different from that of the other apertures. Reference is included to a tube with a yoke as in U.S.A. Specification 3,721,930 and a gun as disclosed in U.S.A. Specification 3,772,554 where the outer beams of an in-line gun possess some vertical ellipticity due to the close spacing of the electron lenses and the above arrangement then provides outer beam apertures of less eccentricity than the center aperture. Comparative sizes are disclosed. The aperture shaping may correct distortions due at least in part to variations in deflection fields in wide angle tubes, the distortions producing horizontally elliptic elongation (Fig. 2, not shown), the correction reducing side distortions but producing central vertical ellipticity (Fig. 3, not shown). Corner ellipticities are also considered. Focus voltage adjustments in combination with the above beam shaping may offset distortions. The gun structure is detailed with respect to Fig. 5, and Fig. 4 (not shown). Dimensions are specified, apertures are 73G, 73B, 73R preferably slightly larger than apertures 67G, 67B, 67R, and apertures 73,G 73B outwardly offset with respect to apertures 67G, 67B, providing asymmetrical focusing field and converging the beams to a common point. The tube may have a line-type phosphor screen with or without light absorbing bands and a mask with elongated apertures, or a dot screen and circular apertured mask.
Patent GB-986887-A (GB)
Title: Improvements in or relating to suspended ceilings
IPC: E04B9/36
Filed: 1961-11-08
Abstract: 986,887. Suspended ceilings. E. DALBY. Feb. 15, 1962 [Nov. 8, 1961; Jan. 17, 1962], Nos. 39983/61 and 1638/62. Heading E1V A suspended ceiling comprises a plurality of springy strips 10 of flat or slightly bowed free transverse section which at their longitudinal edges engage the full length of laterally facing channels in a series of parallel rows of support members 13 placed end to end, which are in turn supported by rails 15. Sound absorbing material 11 is spaced above the strips 10. The material from which the strips 10 are made is supplied in rolls, may comprise aluminium or plastic, and may be perforated. The support members 13, in the embodiment of Fig. 1, terminate in an edge bead 13c capable of receiving a decorative plastic trim strip 17 Fig. 3 which conceals the joints between endwise abutting lengths of support member. Flanges 13d define with the bead 13c, opposed channels for receiving the adjacent edges of juxtaposed strips 10. A flange 13a serves for the connection of the members 13 to T section rails 15, by bolting as in Fig. 1, or by means of clips shown in Fig. 6. Alternative but similar forms of support member 13 and a securing clip are described with reference to Figs. 4, 5 and 7 (not shown). In modification, strips 110, Fig. 8 are received in channels 114 bent into side flanges 113a of channel members 113.
Patent GB-873544-A (GB)
Title: Improvements in or relating to damping arrangements
IPC: F16F5/00
Filed: 1958-12-11
Abstract: 873,544. Dashpots. CONTRAVES A.G. Dec. 11, 1958 [March 31, 1958], No. 39988/58. Class 108(3). In a rotary dashpot, rotation of a member 1, Fig. 1, with respect to a member 2, is damped by a film 3 of viscous liquid between the surfaces 112, 122. A quantity of the liquid 3 is contained in a reservoir 123 of adjustable volume. The reservoir 123 may be contained within the member 1 rather than the member 2. Instead of being flat, the surface 122 may be conical. In a further embodiment, the surface of the member 2 may be composed of a membrane 422, Fig. 4, of resilient material. The shape of this membrane may be changed by compressing a gas or a liquid contained within a space 423 by turning a screw 424. All the embodiments described may be made independent of temperature change by choosing suitable combinations of damping liquid and materials for the construction of the rotating parts.
Patent GB-1324657-A (GB)
Title: Material delivery system
IPC: B60P1/38
Filed: 1970-08-21
Abstract: 1324657 Unloading vehicles ARKANSAS ROCK & GRAVEL CO 21 Aug 1970 [22 Aug 1969] 40366/70 Heading B8E A semi-trailer 12, Fig. 4, has an endless conveyer 94 in its base inwardly sloping walls and a beam 50 of inverted V-slope which relieves the conveyer of some of the weight of the material therein. The trailer is intended for carrying asphalt to a paving machine and has a tank 76 containing lubricant which is sprayed on to the sides of the trailer through pipes 90. The tank is pressurized and the flow of lubricant is controlled by a valve 88. The conveyer is driven by a hydraulic master controlled by a valve 152 opened by a hinged plate 156. The latter co-operates with a probe 22, Fig. 1, on the paving machine 20 so that material cannot be delivered except when the trailer is adjacent the paving machine. The speed of the conveyer and the height of the beam 60 above the conveyer are both controllable. The plate 156 controlling the conveyer can also be pivoted manually by a cam and lever at the rear of the trailer.
Patent GB-1064746-A (GB)
Title: Filter clearing device
IPC: B01D25/00
Filed: 1963-10-15
Abstract: 1,064,746. Fluid filters. J. MULLER. Oct. 15 1963 [Oct. 18, 1962], No. 40660/63. Headings BID and B1T A filter housing 1 has inlet and outlet valves (6), (7) for contaminated and filtered fluid respectively and a source (8) (Fig. 1 not shown) of compressed air which is directed through valve (10) to effect backwash of the filter elements 2, the matter thereby removed from the filters 2 passing through valve (15) into container (16) Fig. 1 shows a filtering device for gas, and during periodic cleaning of elements 2, valves (6, 7) are closed, valves (10, 15) opened. Reservoir (8) contains sufficient air to clean elements 2 in one flushing operation. Container (16) has a porous wall, retains solid matter while passing gas and has a reniforcing metal sheath (17). Fie. 2 shows filter housing 1 with filter elements 2,heated by steam coils or electric elements 45; polluted liquid enters valve 24 and filtered liquid leaves valve 25, baffles 70 assisting heavy solids to decant. Lagged tank 26 is normally full as shown so that valve 31 on float 27 closes pipe 32. To clean the filter, valves 24, 25 are closed, valves 33, 37 opened. Compressed air enters tank 26 by pipe 32 pushing the liquid back throueh elements 2, until float 27 closes orifice 29 by its valve 28. The liquid and sediment enter pot 35, containing a bag 39 in which gravity filtration occurs, a safety bv-pass 42, 43 being fitted. Pipe 32 is temporarily vented to atmosphere at 34 valve 37 closed, valves 24, 25 opened to start the filter working again. Fig. 3 (not shown) illustrates a filter similar to Fig. 2 except that sediment and liquid are backwashed into a cylinder (49), and then filtered by advance of a filter plate (52) under pneumatic or hydraulic pressure of jack (56). Liquid then leaves by pipe (65). When filter press disc (53) becomes clogged, compressed air is admitted by cock (67), pushing disc (53) up to stop (69) and expelling sediment into receptacle (63). Initiation of the filter cleaning operations may be automatic or manual following an audible or visible signal that pressure upstream of the filter has risen. Elements 2 are edge filters built up of grooved rings.
Patent GB-861832-A (GB)
Title: Piston rings
Inventor: PHIPPS GEORGE EDWARD
IPC: F16J9/06
Filed: 1958-12-19
Abstract: 861,832. Piston rings. BRITISH PISTON RING CO. Ltd. Dec. 1, 1959 [Dec. 19. 1958], No. 41008/58. Class 122 (1). A piston oil ring comprises a thin flat scraper ring e seated in a recess d on one side of a split support ring a which urges the scraper ring radially outwards and has oil grooves g or holes therein. The scraper ring is split and, preferably rounded on its inner and outer peripheral edges. The support ring may be of steel, cast-iron, non-ferrous alloys or sintered metal. A scraper ring may be carried on each side of the support ring or two oil rings each comprising a scraper ring and a support ring as shown in Fig. 1 may be housed in a single groove b.
Patent GB-1084638-A (GB)
Title: Cathode ray tube-structure
Inventor: BURDICK GLEN ALDEN
IPC: H01J29/70
Filed: 1965-09-29
Abstract: 1,084,638. Colour television tubes. SYLVANIA ELECTRIC PRODUCTS Inc. Sept. 29, 1965, No. 41399/65. Heading H1D. A self-jigging magnetic convergence system in a three-gun shadow-mask colour television tube comprises top and bottom wafers 35, 31<SP>1</SP> provided with beam apertures 33, 33<SP>1</SP> and slots 49, 51; 49<SP>1</SP>, 51<SP>1</SP>, a 3-winged magnetic shield structure 45 having tabs 59, 59<SP>1</SP> fitting into the wafer slots 49, 49<SP>1</SP>, and pairs of polepieces 37 having split tabs 39, 39<SP>1</SP> engaging wafer slots 51, 511. The polepiece tabs 39, 39<SP>1</SP> have upstanding portions 41 which project through the lower wafer 35 to locate the terminal electrodes of the electron gun structures. The shield tabs 59 project through the upper wafer 35<SP>1</SP> to locate snubbers engaging the tube envelope. Bosses 79, 79<SP>1</SP> are provided on the wafers to separate the wafers and prevent them sticking together during preliminary processing.
Patent GB-1360983-A (GB)
Title: Dibber
IPC: A01C5/02
Filed: 1971-10-06
Abstract: 1360983 Dibber T A PILGRIM 6 Oct 1971 [28 Aug 1970] 41409/70 Heading A1B A dibber comprises a tubular dibble head 15 mounted on a stem 11, a soil ejecting plunger, e.g. a disc 22, movable in the head 15 and connected to a shaft (not visible) sliding within the stem 11, and a lever 26 pivoted to the stem and connected by a link 31 to the shaft to operate the plunger. The pivots of a cranked lever 26 and link 31 are arranged to act as a toggle and retain the lever when raised. The stem carries foot rests 18.
Patent GB-949414-A (GB)
Title: Improvements relating to transistor testing units
Inventor: LOBELLE MARCEL JULES ODILON
IPC: G01R31/26
Filed: 1961-11-20
Abstract: 949,414. Testing transistors. M. L. AVIATION CO. Ltd. Nov.15, 1962 [Nov. 20,1961], No.41466/61. Heading G1U. Apparatus testing the current gain of a transistor comprises oscillator 1 of which one output terminal is connected over protector diode 3 to centre zero meter 2 while the other terminal is connected over a two position variable attenuator 7 to a contact of switch 6 and over high resistance 11 to the emitter of test transistor 10, whose collector is earthed and whose base is connected to the remaining switch contact and to earth over calibrated variable resistance 12; the switch arm being connected to the input of variable amplifier 5 whose output is connected over protector diode 4 to the remaining terminal of the meter 2. Initially with the switch in its first position the attenuator is set and the amplifier gain adjusted till the meter reads zero. Thereafter with the switch in its second position the resistance 12 is adjusted for meter zero, when it is shown that R = Vb (1 + α<SP>1</SP>)/i #  where R is resistance value of 12   Vb = volts drop across 12 α<SP>1</SP> = current gain i e  = emitter current, which is constant since resistance 11 is high so that the resistance R may be calibrated directly in terms of α<SP>1</SP> with the two attenuator settings corresponding to direct or X 10 reading for α<SP>1</SP>.
Patent GB-1027795-A (GB)
Title: Improvements in or relating to cryogenic switching devices
Inventor: WALKER PETER ALBERT
IPC: G11C11/44
Filed: 1962-11-02
Abstract: 1,027,795. Superconductive circuits. INTERNATIONAL COMPUTERS & TABULATORS Ltd. Oct. 21, 1963 [Nov. 2, 1962], No. 41518/62 Heading H3B. [Also in Division H1] A cryogenic switching element is produced by forming a film of normal metal in contact with a film of superconductive metal, the normal metal being arranged to define the switching element within the area of the superconductive metal. As shown, Fig. 2, a thin layer 2 of normal metal is deposited on a substrate 1, and a plurality of areas of superconductive metal, one of which is shown in the Figure as 3, are evaporated through a mask on to the layer 2. The thin layer of normal metal reduces the critical temperature of the superconductive layer by an amount depending on the relative thicknesses of the layers. The thin edges 4 of the superconductive areas therefore have their critical temperature reduced more than the central portions and by operating the devices at the critical temperature of the central portion edge effects, due to any increased proportion of impurities, are reduced. In an alternative embodiment, Fig. 5, the layer 6 of normal metal is deposited on the substrate 7 and a pattern is formed, either by masking during the deposition or by etching, so that when a continuous layer 5 of superconductive metal is deposited on top of it cryogenic switching elements, one of which is shown, are defined together with connecting leads 8. This method also produces devices free from edge effects. The arrangement of a typical switching device is also described, Fig. 6 (not shown), and comprises switching elements deposited on insulating layers formed over gate conductors which are connected to the preceding switching element. The normal metal may be silver or copper and the superconductive metal may be tin or lead.