baber/WOPTO huggingface dataset:
Patent GB-772000-A (GB)
Title: Improvements in or relating to electron discharge devices of the travelling wave type
IPC: H01J23/27
Filed: 1954-03-23
Abstract: 772,000. Travelling-wave tubes. WESTERN ELECTRIC CO., Inc. March 23, 1954 [March 30,1953],No.8457/54. Class 39(1). The wave transmission circuit of a travelling wave tube is a two conductor line comprising a metal core 14, Fig. 1 formed with a helical groove 15 and a wire helix 16 wound, with interposed insulation 17, in the groove, the wire helix and core being at different D.C. potentials and the beam interacting with a spatial harmonic component of a backward wave which is extracted at the gun end of the circuit. The device may be a backward wave oscillator, as shown, or a backward wave amplifier, Fig. 3 (not shown). The wire helix divides the helical groove into two parts with oppositely directed h/f fields parallel to the tube axis ; this is stated to facilitate spatial harmonic operation. The outer diameter of the core and helix diameter are equal, and the helical groove is of uniform pitch. The output is taken by integral extensions of the helix and core which form a coaxial line 23 and the other end of the line has a reflectionless termination of loss material 27, e.g. colloidal graphite, packed into the space between 16 and 14 ; the amount of the filling may be increased gradually over the last few turns to provide a broad band termination. Focusing is achieved electrostatically by keeping 14, 16 at different D.C. potentials and keeping electrode 26 at a D.C. potential between that of 14, 16, or might be achieved by a solenoid. The beam is produced by annular cathode 12. Since variation in beam velocity varies the frequency, frequency modulation can be achieved by connecting signal source 25 between cathode 12 and core 14. In an amplifier, Fig. 3 (not shown) coaxial feeder lines are provided at both ends of the tube. In modifications, the wire helix can be of ribbon cross section instead of circular ; the core 14 can be replaced by a hollow tube the inner surface of which is helically grooved. Specifications 734,479 and 772,001 are referred to.
Patent GB-1099273-A (GB)
Title: Improvements in or relating to corrugated board and method for its manufacture
Inventor: PASKE AMOS ROY
IPC: B31F1/28
Filed: 1965-02-27
Abstract: 1,099,273. Laminating. REGAL PACKAGING Ltd. Feb. 18, 1966 [Feb. 27, 1965], No. 8559/65. Heading B5N. Corrugated paper board is made by contacting one face of an uncoated corrugated web against a liner coated with thermoplastic material which has been heated to render it adhesive, and allowing the coating to set whilst the web and liner are in contact. A second coated liner may likewise be adhered to the other face of the corrugated web. The liner may be pre-heated by a heated roller and further heated by a second roller which also presses it against the web whilst the latter is in the process of being corrugated by a fluted roller. The single-faced board may then be collected on a belt and fed to a second set of rolls which heat and press on a second liner, the resultant double-faced board then being slit, or cut into sheets. Suitable thermoplastic coatings are polyethylene, polypropylene, polystyrene, an acrylic resin, sealing wax, a microcellular wax, or bitumen and application may be by rollers. The coating is preferably continuous to provide an impervious barrier against water or water vapour.
Patent GB-986357-A (GB)
Title: Improvements relating to pile fabrics
IPC: D04H1/74
Filed: 1963-03-04
Abstract: 986, 357. Pile fabrics. E. I. DU PONT DE NEMOURS 8 CO. March 4, 1963 [Jan. 22, 1963], No. 8581/63. Heading D1K. A pile fabric suitable for carpets and imitation furs comprises an intermingled mass of synthetic or artificial organic polymeric filaments which have a three-dimensional crimp anchored in an adhesive layer in a randomly spaced and angled manner. The average filament denier is from 2 to 25 and pile fibre density is between 0. 5 and 3.21b per cubic foot with 5000 to 16,000 filaments per square inch and the ratio of the average extended length of the filaments to the height of the pile is between 1.3 3 and 3.0. The filaments may be of a wide range of polymers and the adhesive layer may be of chloroprene rubber, elastomeric foams and sponges, butadiene-styrene rubber or one of a number of resins which can be thermoset. Backings for the fabric may be woven such as burlap, canvas and nylon scrim, or knitted such as nylon tricot, or non-woven synthetic materials, metal foils, or rigid sheets of metal, ceramics, or wood. The fabric may be prepared by treating a mass of the filaments in a mould with a binding composition, cutting sheets therefrom of the desired thickness, applying the same to an adhesive layer and then curing and or drying to solidify the adhesive layer. One or more backing layers may be applied while the adhesive is still tacky. The pile is then treated to remove all the binding composition but leaving the pile secured to the adhesive layer.
Patent GB-450663-A (GB)
Title: Improvements in or relating to illuminating devices
IPC: H01J61/52
Filed: 1936-03-23
Abstract: 450,663. Discharge devices. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. Emmasingel, Eindhoven, Holland. March 23, 1936, No. 8630. Convention date, June 14, 1935. [Class 39 (i)] An illuminating device comprises a vapourfilled high-pressure discharge lamp mounted in a cooling vessel which is provided with means for preventing the development of an excess pressure when the lamp bursts. A lamp 2 is mounted in a casing 1, and is secured through a member 6 to a rod 4 which connects one terminal of the lamp through a ring 9 and screw 19 to the earthed casing. The loading-in wire 5 is secured to a pin 8 adapted to fit into a socket 10 which is housed in an insulating block 13. The casing is secured to a ring 17 which is slidably mounted on a rod 14 screwed into the block 13. A spring 18 is arranged between the ring 17 and a fixed ring 16. A watertight box 20 is secured to the casing by a nut 21. Liquid supply and discharge pipes 22 are provided and a glass cover 23 is secured to the casing through rubber packing and a nut 26. A valve 27, provided with a reflector 30, is controlled by a spring 28, which is mounted on a rod 32 secured to a yoke 29 carried by the tubes 22. In other forms, the water container is fitted with a rubber disc, secured thereto by rivets, or is fitted at the top thereof with a gas-filled expansion chamber.
Patent GB-659119-A (GB)
Title: Improvements in cooling bed
IPC: B21B43/02
Filed: 1949-03-30
Abstract: 659,119. Rolling. DEHN, S. G. (Birdsboro Steel Foundry & Machine Co.). March 30, 1949, No. 8656. [Class 83 (iv)] Roller tables.-In a cooling bed longer than 25C feet for a rolling mill. groups of walking bars for feeding the stock across the bed are actuated from separate drives which are mechanically interconnected by a torsion shaft of length substantially less than that of the bed. The walking bars 56 on frames 55 are arranged on both sides of a double run-in table having kick-offs which transfer the work to either one of a pair of pack mechanisms 57, Fig. 8, from which the work is transferred by the walking bars forming part of the cooling bed to a pair of inclined beds 58 and run-out tables. The walking bar supporting frames 55 on one side of the bed and in one half of the length of the bed are raised and lowered in the conventional manner by a motor 32, through a torsion shaft 35, Fig. 4, reduction gears 34, connecting rod 41, rocker arm 43, push rods 48, opposed bell-crank arms 53 and upwardly and downwardly moving push rods 54. The backward and forward motion of the bars and frames is similarly obtained from the reduction gears 34 through a connecting rod 62, Fig. 2, rocker arm 63, push-rod 74, Fig. 8, arms 76, torsion bars 72 and opposed universally jointed push-rods 82. The motion of the walking bars in the other half of the length of the cooling bed is obtained through an identical system driven by a second pair of motors mechanically connected through torsion shafts 85 to the motors 32. The shafts 85 run in bearings 90 on the machine bed and are pre. ferably made in sections 86, Fig. 2, coupled by flanges 92 keyed on the ends of the sections.
Patent GB-1468762-A (GB)
Title: Means for ascertaining required sizes of brassieres
IPC: A41C3/00
Filed: 1975-04-03
Abstract: 1468762 Adjustable brassiere M SUTHERLAND 3 April 1975 [26 Feb 1974] 8683/74 Heading A3V  A fitting brassiere similar to that described in Specification 1160147 includes depending, slotted, tapes 4, through which a horizontal tape 5 can be fitted. The tape 5 is also supported by extensions of the shoulder straps. The tape 5 enables the depth of an underbust band to be calculated.
Patent GB-691468-A (GB)
Title: Glass bending methods and furnaces
Inventor: JENDRISAK JOSEPH ERAZIUS
IPC: C03B29/08
Filed: 1951-04-14
Abstract: 691,468. Bending glass sheets. LIBBEYOWENS-FORD GLASS CO. April 14, 1951, No. 8725/51. Class 56. Relates to a method of and apparatus for bending selected portions of glass sheets while leaving other portions substantially unbent, particularly curved windscreens of vehicles. The plane sheets 3 are mounted on formers 2 having moulding portions of the desired curvature and advanced through an oven bearing heaters 19, 20 and additional radiant heaters 38 all arranged to provide parallel regions of different temperatures extending generally along the path of the moulds, the portions of the sheets to be bent being in the hotter region of the oven. Electric means are provided to stop the conveyers 4 if 'the moulds deviate substantially from a straight path.
Patent GB-1253726-A (GB)
Title: Manufacture of carboxymethyl hydroxyalkyl mixed cellulose ethers
Inventor: CALLIHAN CLAYTON DALE
IPC: C08B11/193
Filed: 1969-02-18
Abstract: 1,253,726. Mixed carboxymethyl hydroxyalkyi cellulose ethers. DOW CHEMICAL CO. 18 Feb., 1969, No. 8746/69. Heading C3A. Mixed carboxymethyl hydroxyalkyl cellulose ethers having from 2 to 4 carbon atoms in the hydroxyalkyl groups are prepared by reacting cellulose, an alkali metal chloroaoetate and an alkali metal hydroxide in the presence of water to provide a carboxymethyl cellulose with a carboxymethyl degree of substitution of from 0-2 to 1-0, acidifying the carboxymethyl cellulose with a fluid acid to reduce the pH to less than 7, washing the acidified carboxymethyl cellulose ether with water to remove impurities, drying the washed ether to a moisture content of from 20 to 75% by weight of the ether, reacting the dried ether with an alkylene oxide containing from 2 to 4 carbon atoms, e.g. ethylene or propylene oxide, in the presence of at least 0À01% by weight, based on the weight of the ether, of a basic catalyst to provide a mixed carboxymethyl hydroxyalkyl cellulose ether having a hydroxyalkyl molar substitution from 0-2 to 5-0. The starting material cellulose is preferably in particulate form, which form is retained in the final product. The reaction of the cellulose, alkali metal chloroacetate and alkali metal hydroxide is preferably carried out in the absence of oxygen, at 25‹ to 90‹ C. with vigorous agitation. The fluid acid may be an acidic gas, e.g. gaseous hydrogen chloride, or an aqueous solution of a mineral acid, and the catalyst may be an aqueous alkali metal hydroxide, e.g. NaOH.
Patent GB-1273023-A (GB)
Title: Improvements in or relating to electric cookers
Inventor: DYOS GORDON THOMAS
IPC: H05B3/00
Filed: 1969-02-18
Abstract: 1,273,023. Surface cooling apparatus. ELECTRICITY COUNCIL. 15 May, 1970 [18 Feb., 1969], No. 8748/69. Heading F4W. [Also in Divisions H3-H5] An electric cooker hotplate comprises one or more tungsten filament-heating lamps and an associated reflector positioned near an infra-red transparent surface plate of glass, ceramic or glass-ceramic. A tubular envelope lamp 11 is arcuately shaped, Fig. 1 (not shown), and has a brass reflector 15 with a polished silver coating 16 to reflect radiation upwardly through surface plate 10. Metal end connectors 20, Figs. 3-5 (not shown), in the form of flexible strip, are arranged vertically to provide rigidity in a vertical plane and are bolted to a metal angle bracket 22 on an insulating base 23. A reflector 42, Fig. 6, is movable between a hot-plate position (42) and a grilling position 45, to direct radiation through plates 40 or 41 respectively. A plurality of heating elements are connectible in series and/or in parallel by suitable controls. Movable screens or shutters may select required areas of the surface plate for heating. Bi-metal regulators may control the heating, or a solidstate power controller eliminates parts of each cycle of the A.C. voltage. Visible radiation from the heat sources indicates the heating level, or a separate indicating filament may be provided for this purpose.
Patent GB-712293-A (GB)
Title: Improvements in or relating to carpet sweepers
IPC: A47L11/33
Filed: 1952-04-07
Abstract: 712,293. Carpet sweepers. BISSELL CARPET SWEEPER CO. April 7, 1952 [Dec. 8, 1951], No. 8817/52. Class 138 (1) A carpet sweeper, Fig. 1, comprises a casing 1, floor wheels 2 and a rotatable brush 4 driven by the wheels, the casing including fixedly connected side members 8 and end members 9, the end members having inwardly opening recesses 18, and at least one comb 6 having teeth projecting therefrom to coact with the brush and having end portions 17 supportingly engaged in the recesses, the interengaging portion of the comb, the recesses and the end walls coacting to support the comb in fixed relation to the brush. The recesses 18, Figs. 2 and 4, in the wooden end members 9 are slot like to frictionally receive projecting lugs 17 on the ends of the combs 6. The recesses may be stamped in the members 9 which also have openings 22 and an opening 23, formed by punching, for receiving wheel shaft housings 7 and the ends of the handle bail 24, respectively. The side members 8 each have a pair of spaced vertical slots 11 to receive the ends of the members 9 which are then secured by adhesive as shown at 12, Fig. 1, and by nails 13. Each side member 8 has a longitudinal groove 20 above the top edges of the end members 9 to receive the edges of the casing top 10, Fig. 1, and the upper edges of the members 9 are shaped to support the ends of the casing top. Specification 702,426 is referred to.
Patent GB-828071-A (GB)
Title: Improvements in electromagnetic relays
IPC: H01H50/34
Filed: 1956-03-21
Abstract: 828,071. Electromagnetic relays. GENERAL ELECTRIC CO. March 21, 1956 [March 21, 1955], No. 8844/56. Class 38 (5). A relay intended for use in circumstances in which when the relay has operated the applied voltage drops but not to the drop-out voltage which is considerably below the pick-up voltage, has means to prevent armature bounce when the armature releases and is arrested by its stop. The arrangement prevents pick-up of the armature by a voltage less than the pick-up value due to armature bounce. As shown, an L-shaped yoke 9 magnetized by a coil 16 pivotally supports at 40 an L-shaped armature 38 biased by a spring 49 connected between a depending armature leg 45 and a notched arm 47 of the yoke 9. The return force of the spring 49, which decreases to almost zero as the armature is attracted towards the pole 24, is adjustable by utilizing a selected notch 48 in the arm 47, thereby determining the drop-out voltage. The released position of the armature, and thus the value of the pick-up voltage, is determined by an adjustable screwed stop 53 engaged by a resilient strip 55 fixed to the armature arm 44, the deflection of the strip 55 being limited by a rigid strip 66 also fixed to the arm, these strips preventing armature bounce. When the armature is attracted, the arm 44 engages the bentover upper end 60 of a contact-carrying blade 47 to separate the contact 61 from a fixed contact 62. In a modification (Fig. 5, not shown), the blade 47 carries a further contact which engages a further fixed contact when the armature is attracted.
Patent GB-476719-A (GB)
Title: Improvements in or relating to photoelectric cells
IPC: H01L31/0216
Filed: 1937-03-25
Abstract: 476,719. Light sensitive cells. DEHN, F. B. (Zeiss Ikon Akt.-Ges.) March 25, 1937, No. 8878. [Class 40 (iii)] A photo-electric cell comprising a base plate 1 with a photo - electric layer 2 has applied to this layer an intermediate layer 11 of, for example, regenerated cellulose which does not adversely affect the sensitivity of the cell. An outer layer 12 which is wholly or partially moisture impermeable, consists of artificial resin, wax, paraffin or cellulose derivatives which would affect the sensitivity of the cell, if in contact with the layer 2. The layers may be applied to the cell by adhesive, by brushing or spraying or dipping the cell in the molten or dissolved substance. To obtain the effects of a colour filter substances such as Berlin blue or aesculin may be incorporated in the outer covering.
Patent GB-1144032-A (GB)
Title: Air-operated jig washer
IPC: B03B5/24
Filed: 1967-02-24
Abstract: 1,144,032. Jig washers. BETEILIGUNGSUND PATENTVERWALTUNGS G.m.b.H. 24 Feb., 1967 [26 Feb., 1966], No. 8884/67. Addition to 992,207. Heading B2H. In an air-operated jig washer provided with one or more rubber or plastics bellows 3 arranged beneath a screen 1 and with a discharge pipe 16 for heavy material, a radiation detector comprising an emitter 23 of γ-rays and at least one countertube 24 is arranged to direct a beam of γ-rays through the stream of material leaving the screen 1 in the region above the pipe 16 and serves to adjust a device 17, 18 for controlling the rate of discharge of material through the pipe 16. The detector is so disposed that the beam of γ-rays from the emitter fans out in a plane either parallel, as shown, or normal, Fig. 2 (not shown) to the parabolic flow of the material into the pipe 16. The device 17, 18 comprises a reciprocating displacement member 18, whose reciprocating speed and stroke may be controlled by the radiation detector 23, 24, and a baffle plate 17 whose level may be adjusted. In operation, the heavy material discharged through the pipe 16 and any fine heavy material passing through the screen 1 and a bucket wheel 15 are removed by means of a chain conveyor 19. Lighter and medium size material passes over an edge 20 onto a further screen 27. A number of screens may be mounted in series each followed by a "heavy" material discharge pipe. The discharge pipe beyond the last screen of a series is followed by an inclined surface (28), Fig. 2 (not shown) over which the "light" material discharges towards an outlet (29). An adjustable weir (30) for the discharge of the water is provided beyond and above the outlet (29). In a modification, the emitter and/or the counter-tube of the radiation detector may be mounted outside the jig washer.
Patent GB-458852-A (GB)
Title: Improvements in or relating to protective devices for telephone apparatus or the like
IPC: H04R1/12
Filed: 1935-03-21
Abstract: 458,852. Hygienic devices. SALERNI, J., 22, Avenue Kleber, Paris. March 21, 1935, No. 8928. Void [Abridged as open to inspection under Sect. 91 of the Acts, Sept. 23, 1935]. [Class 40 (iv)] Protective screens for a telephone instrument are fitted removably on the earpiece, the mouthpiece or on both. As shown in Fig. 2, perforated caps a, b of cardboard or paper are sprung over the earpiece and mouthpiece of a hand telephone set. The cap b is cut and the part b<1> bent back to fit the inclined part m of the mouthpiece. As shown in Fig. 3, the screens a, b are carried by spring clips f<1>, f, which 'engage the instrument. The screens are of metal with lugs p<1>, p<2>, p<3> glued to the clips. As shown in Fig. 4, a single screen a perforated at o and at b<3> fits over the mouthpiece and the earpiece of a hand set. The screens may be slotted or they may be imperforate, or flexible covers may be used. A number of screens which have been treated with antiseptic material or scented may be stored in a magazine for use gratuitously or on the insertion of a coin, and the screen b may fit within the screen a for storage.
Patent GB-422023-A (GB)
Title: Improvements in or relating to supports for adjustable sources of light or rays
IPC: B03C3/00
Filed: 1934-03-22
Abstract: 422,023. Pedestal stands. MULLER AKT.-GES., C. H. F., 24, R÷ntgenstrasse, Hamburg, Germany. March 22, 1934, No. 9025. Convention date, March 23, 1933. [Class 52 (v)] [See also Group XX] A column support for an adjustable source of light or rays comprises a longitudinal slot 2 in which is located an arm 9 carrying the source, the arm 9 being movable horizontally in the direction of its length and being movable vertically. The column comprises two tubes 1 of trapeziform section interconnected at top and bottom, the wide faces being formed by plates 3, the edges 4 of which constitute guide ways for rollers 5 of a vertically slidable carriage. The latter comprises rollers 8 between which the arm 9 moves, and is connected to counterweights 14 by cables 13.
Patent GB-658349-A (GB)
Title: Improvements in or relating to optical objectives
IPC: G02B9/34
Filed: 1949-04-04
Abstract: 658,349. Optical objectives. COOK, G.H., and TAYLOR, TAYLOR & HOBSON, Ltd. April 4, 1949, Nos. 9110/49 and 6083/50. [Class 97 (i)] In an optical objective which comprises two divergent meniscus inner components 2, 3 having their air-exposed surfaces concave towards a diaphragm between them and located between two convergent outer components 1, 4, each of the four components is in the form of a doublet having a divergent inner element and a convergent outer element and the mean refractive index of the material of the divergent element in each inner component exceeds that of the material of the associated convergent element by between 0.03 and 0.12 and the mean refractive index of the material of the convergent element in each outer component exceeds that of the associated divergent element by between 0.05 and 0.20. Optical data are given for two examples of the lens shown and for one example in which the internal contact surface of each negative doublet is concave towards the diaphragm. The first Provisional Specification includes data for another example of the lens shown.
Patent GB-438844-A (GB)
Title: Improvements in wheels for railway or like vehicles
IPC: B60B17/00
Filed: 1935-03-23
Abstract: 438,844. Railway wheels. CORTS, G. F. A., 25V, Berzeliigatan, Gothenburg, Sweden. March 23, 1935, Nos. 9139 and 9140. Convention dates, March 27, 1934 and June 6, 1934. [Class 144 (i)] In railway wheels of the kind having treads formed with annular ribs such as 8, 9 separated by grooves 10, 11, the inner flank 17 of the innermost groove 10 is inclined at an acute angle to the tread; the width of this groove at the tread surface is about a quarter of the total width of the tread ; and, the base 18 of the groove is approximately parallel to the tread surface. The flank 17 may be of convex form, and may extend over half the width of the groove. Specification 411,765 is referred to.