baber/WOPTO huggingface dataset:
Patent GB-836182-A (GB)
Title: Method and device for working materials by means of a beam of charged particles
IPC: H01J37/304
Filed: 1958-11-07
Abstract: 836,182. Electron beam apparatus. ZEISS STIFTUNG C., [trading as ZEISS, C. [Firm of]]. Nov. 7, 1958 [Nov. 20, 1957 ; March 6, 1958], No. 35817/58. Class 39(1). A relatively large pattern worked, e.g. drilled, in a piece of material 10, Fig. 1, by a beam of charged particles 15 is completely made up of a multitude of worked areas each corresponding in cross-section to that of the beam and successive areas worked upon by the beam are separated by a distance greater than the diameter of a worked area and preferably as great as possible. For example in Fig. 2 where the pattern to be produced is in the form of a cross worked area 28 at one extremity of section 26 of one arm of the cross is followed by worked area 29 at the extremity of section 27 of the opposite arm of the cross. Sections 27 and 28 are then worked completely followed by the remaining six sections into which the cross is notionally divided. The deflection of the beam is programmed by a digital computer comprising a programme store 16 and suitable decoders 17, 18, 19. One decoder 17 controls the amplitude and duration of the beam pulse. Image aberrations due to large deflections and errors arising due to the retentivity of magnetic elements forming the deflection system may be avoided by suitable programming of the computer. Image aberrations may be corrected by the provision of additional electron-optical systems, e.g. a stigmator, and suitable decoders. The angle at which the beam strikes the material and the point of incidence may be further controlled by providing two deflections systems in different planes. The deflection systems may be electrostatic or electromagnetic. After the working of the pattern the material may be shifted automatically. The beam cross-section may be circular, square, rectangular or triangular. The beam may be switched off during its movement from one working area to another and the beam may act on each worked area with a predetermined number of impulses.
Patent GB-1428716-A (GB)
Title: Hem-band sewing machine
IPC: D05C7/06
Filed: 1973-07-27
Abstract: 1428716 Trimming sewn work BEISLER GmbH 27 July 1973 [14 Nov 1972] 35951/73 Heading D1G A hem-band sewing machine has a pinking device 26 removable therefrom, the device comprising a cutter 17 driven from the driving shaft 1, the device including a reduction gear 7 having a coupling sleeve 9 and a shaft 11 connected thereto so as to be axially displaceable and which is mounted on a bearing block 14 in which is also mounted a cutter shaft 16 for the cutter, the block being adjustable parallel to the axis of the cutter shaft. The shafts 11 and 16 are drivingly connected by belts 19. The cutter is driven at a peripheral speed corresponding to that of the machine's material feed: the cutter cuts and pinks the workpiece edge after the band has been sewn on. Seams. The workpiece is then removed and the pinking folded back and stitched.
Patent GB-487133-A (GB)
Title: Improvements in and relating to abrasive sleeves and rolls
IPC: B24D13/02
Filed: 1937-12-30
Abstract: 487,133. Grinding -rollers. MULHOLLAND, D. E. Dec. 30, 1937, No. 36084. [Class 60] An abrasive sleeve 10 for a grinding-roller is formed by winding a wire 11 having the crosssection shown in Fig. 6, on a tapered mandrel 12, a rubber bonded abrasive material, moulded into a strip 13 having the cross-section shown in Fig. 5, then being wound on the mandrel with the convolutions touching and the turns of the wire lying in the recesses 17 in the strip. The sleeve thus formed is then wrapped tightly with wet fabric and is vulcanized, whereby the convolutions unite and portions thereof are forced into the recesses 14 in the wire. The outer surface of the sleeve is then trimmed, for example, by grinding, to cylindrical form and the sleeve is mounted on a tapered drum 18, being pressed axially to maintain a frictional grip, by means of a ring 20 pressed by springs 22 interposed between the ring 20 and a ring 19 fastened to the drum by screws 21.
Patent GB-1099793-A (GB)
Title: Improvements in mechanical driving means
Inventor: HASQUENOPH JEAN
IPC: F16H21/14
Filed: 1965-08-23
Abstract: 1,099,793. Linkwork. COMMISSARIAT A L'ENERGIE ATOMIQUE. Aug. 23, 1965 [Aug. 25, 1964], No. 36137/65. Heading P2K. Two members 6, 8 are freely journalled on the crank-pins 4a, 2a of contra rotating crank-shafts and are constrained to gyrate in symmetrical closed curves, without rotating on their own axes, about the axes of the crankshaft journals 4, 2, by an arm 19 fast with member 8 and slidably engaging a slot between arms 17 fast with the other member 6. The members 8, 6 have lateral engaging vanes 32, 30 and are fast with tubes 12, 10, mounted by roller-bearings on the crank-pins 4a, 2a and fast with the arms 19, 17. The crank-shafts are coupled by identical gears, one of which is driven by a motor. For other than circular closed curves, the crankpins may move in cam slots in the crank webs.
Patent GB-1106688-A (GB)
Title: Transformers
Inventor: WYATT DEREK GERALD
IPC: H01F27/36
Filed: 1964-09-03
Abstract: 1,106,688. Transformers. NATIONAL RESEARCH DEVELOPMENT CORPORATION. 1 Dec., 1965 [3 Sept., 1964], No. 36208/64. Heading H1T. A transformer (e.g. a balanced input transformer for a measuring bridge) has a two-section primary winding each of which sections has an electrically conductive screen which is connected through an individual impedance conversion circuit to the lead to the section it is screening. As shown, a wound bobbin 50 is mounted on each of two limbs of an air-gapped laminated C-core, each bobbin consisting of four tubular formers 54, 56, 58, 60 made of an acrylic resin and carrying one half of the transformer winding assembly arranged in the order: primary winding 62, air gap 78, primary screen 64 connected to an impedance conversion circuit, inner secondary screen 70, air gap 80, secondary winding 72, air gap 82 and outer secondary screen 74. The secondary screens may be earthed. Each screen may consist of a winding or conductive point applied to the formers 56, 60 with breaks to avoid circulating currents, or may be replaced by a plurality of screens distributed between the layers of each winding. The windings are vacuum impregnated with wax, which may fill the air spaces, and the transformer placed in a can of magnetic material, vacuum cast in epoxy resin and placed in a second can. The supply to the split primary (8), (8<SP>1</SP>) (Fig. 1, not shown) also supplies two emitter-follower circuits (16), (18) and (16<SP>1</SP>), (18<SP>1</SP>) connected to the primary screens and to screens round the input leads, while the secondary, which may also be split, has inner and outer screens (24), (24<SP>1</SP>) and (28), (28<SP>1</SP>) supplied from suitable points in an amplifier (6) which the transformer is supplying. A phase inverter (34) and capacitors (36), (10) and (10<SP>1</SP>) may be provided to reduce stray oscillations.
Patent GB-1256231-A (GB)
Title: Improvements relating to dust extraction apparatus
Inventor: POWELL DONALD GAVIN
IPC: B08B15/00
Filed: 1968-07-30
Abstract: 1,256,231. Removing dust generated in industrial processes. NEWTON COLLINS Ltd. 25 July, 1969 [30 July, 1968], No. 36229/68. Heading F4X. A dust extractor for use in foundry settling shops has a hood 23 attached to the lower end of a vertical duct which in turn is connected via flexible tubing 31, 34 and main trunking 33 to a source of negative pressure. The vertical duct depends from a horizontal boom 10 provided with horizontal roller trackways 15 to allow the duct to be moved radially therealong. The boom 10 is pivoted about a vertical axis on hinges 13 mounted on a support pillar 14. The vertical duct comprises telescopic sections 18, 19. This construction allows the height of the hood 23 to be varied as required via a counterbalancing system comprising an annular weight 20 surrounding the duct section 18 and connected to the section 19 by means of cables 21 passed over pulleys 22. The hood 23 which is rotatably connected to the end of the section 19 at 25 has an opening 28 the effective size of which can be adjusted by means of a sliding closure plate 29. Several dust extractors may be connected to the main trunking which leads to a conventional suction and air filtering plant.
Patent GB-752327-A (GB)
Title: Improvements in or relating to elastic adhesive bandages
IPC: A61F13/10
Filed: 1954-12-15
Abstract: 752,327. Adhesive bandages. MEDICAL FABRICS CO., Inc. Dec. 15, 1954 [Dec. 23, 1953], No. 36383/54. Class 81(2). An elastic adhesive bandage comprises an elastic strip having a central portion and extending therefrom in each of two opposite directions, a pair of elastic laterally spaced substantially parallel legs. The bandage is made from a strip 1 of elastic material having an adhesive coating 7, an absorbent pad 8 and a removable gauze covering 9. The elastic strip is formed with a pair of substantially parallel legs 3, 4, 5, 6 at each end. The material of the strip is such that the legs 3, 4, 5, 6, are more elastic than the centre portion and is preferably made from an elastic woven fabric having elastic warp threads and non-elastic weft threads. Preferably the threads across the width of the strip are non-elastic.
Patent GB-1246667-A (GB)
Title: Semiconductor apparatus and method for manufacturing semiconductor apparatus
Inventor: SUENAGA MASANOBU
IPC: H01L23/48
Filed: 1968-09-06
Abstract: 1,246,667. Semi-conductor devices. TOKYO SHIBAURA ELECTRIC CO. Ltd. 6 Sept., 1968 [6 Sept., 1967; 27 Sept., 1967; 14 Feb., 1968], No. 36505/68. Heading H1K. [Also in Division H2] A semi-conductor body 55 is encapsulated in an envelope comprising two conductive plates 51, 52, respectively connected to electrodes 57a, 57b on the body 55, and an insulating layer 64 including a laminated organic adhesive layer sealing the envelope. The laminated organic adhesive layer preferably comprises layers of glass cloth or synthetic fibre cloth impregnated with a thermosetting resin, a number of examples of which are given. The application of heat and pressure to the two conductive plates 51, 52 causes the adhesive to seal the envelope. In the form shown a layer 59 of silicone rubber protects the Si body 55, and the laminated organic adhesive completely fills the space around the body. A laminated insulating plate 61 is provided to relieve pressure on the body 55 during encapsulation, and to form part of the completed envelope. In another embodiment, Fig. 37 (not shown), the laminated adhesive does not completely fill the space around the semi-conductor body. Various configurations of electrode and conductive plate are disclosed and in a modification the upper conductive plate is replaced by an insulating plate. Several diodes may be encapsulated in separate apertures in a common laminated insulating layer (176, Fig. 15 (not shown), between conductive plates (171-175) separated by grooves (197, 198) so as to connect together different groups of diodes on the two sides of the layer (176), thereby forming a rectifying bridge circuit or a 3-phase rectifier, e.g. for an automobile alternator. Transistors may also be encapsulated according to the invention, in which case the conductive plate on one side of the device is replaced by a printed circuit board with separate conducting tracks, for contacting the emitter and base electrodes, Fig. 14 (not shown). If individual devices are to be made, a number of semi-conductor elements may be encapsulated in a common insulating layer between common conductive plates, separation being effected by cutting between the devices. Diacs and triacs may also be encapsulated according to the invention.
Patent GB-819933-A (GB)
Title: Improvements relating to collapsible beds
Inventor: TRANTER HARRY
IPC: A47C17/48
Filed: 1956-11-30
Abstract: 819,933. Folding beds. VONO Ltd. Nov. 22, 1957 [Nov. 30, 1956], No. 36609/56. Classes 52(2) and 52(3) In a folding bed having a mattress frame in three pivotally connected sections the side bars 17, 18 of the outer sections are pivoted at 15, 19 to the sides of the centre section and are also connected by pivots 20 to pivoted X-form legs 21 which support the centre section and are automatically collapsed as the frame is folded. Additional legs 24 for the outer sections which are automatically folded and unfolded by links 26 are provided and an auxiliary foldable section 29 may be provided at the end of the foot section. A head board 16 serving as a table top when the bed is folded may be provided.
Patent GB-1442245-A (GB)
Title: Process for the production of finely divided ceramic colourants  and pigments
IPC: C09C1/00
Filed: 1974-08-21
Abstract: 1442245 Comminuted colourants BAYER AG 21 Aug 1974 [24 Aug 1973] 36750/74 Heading C1A [Also in Divisions B2 and F4] Aggregated solid material, e.g. ceramic colourants and pigments are comminuted in an agitator mill which can be a core, hemisphere or cylinder with a charge of grinding media, e.g. quartz or zirconium sand of size 0À5 to 2 mm. Inlet and outlet sieves prevent loss of grinding media. The aqueous starting suspension is 40-60 by weight solids with a pH at least 7. The solids content is reduced by dilution to 10-30% by weight and the pH adjusted to 2-6À5 e.g. by addition of sulphuric or formic acid. The aqueous phase is reduced by 20% and the suspension optionally dried. The duct (see Division F4) has a steam heated jacket 3 and shaft 5 with agitators 4. Ground material is fed in via a pipe 1 and discharged at 7 into a horizontal drier 8 whose wall is heated to 450‹ C. by an electric element 9. Dried product is discharged via a pocket wheel 12. Vapours, e.g. formic acid, are condensed at 13. An example is given of a sintered CoAl 2 O 4  spinel pigment prepared on a rotary ring furnace, and then ground.
Patent GB-846593-A (GB)
Title: Improvements in or relating to chain guards for electrically operated hoist pulley blocks
IPC: B66D3/26
Filed: 1957-11-26
Abstract: 846,593. Actuation of switches. KING, D. M. Nov. 12, 1958 [Nov. 26, 1957], No. 36837/57. Class 38 (5). [Also in Groups XXIV and XXX] A chain hoist has guard elements 12 each provided with subsidiary levers 17. Each element 12 and its lever 17 are both pivoted at 13, and the lever 17 is provided with contact 22 for operating switch 23 connected in the circuit of motor which drives chain sprocket 10. Chain 11 has limit stops 24 which engage and displace the respective lever 17 to withdraw contact 22 from switch 23 to stop the motor. Likewise a chainlink when twisted engages and displaces element 12 which displaces lever 17 to stop the motor. Springs 14, 15 connect respectively the pair of elements 12 and the pair of levers 17 to provide the necessary bias. Specification 557,040 is referred to.
Patent GB-922694-A (GB)
Title: Process for oxodizing olefines to aldehydes, ketones and acids
IPC: B01J27/24
Filed: 1959-10-30
Abstract: In the process for the manufacture of aldehydes, ketones and/or carboxylic acids corresponding to the aldehydes by the reaction of an olefine with oxygen or an oxygen-containing gas in neutral to acid medium in the presence of a liquid catalyst comprising a salt of platinum, rhodium, ruthenium, iridium or palladium and a redox system, the reaction being carried out in separate reaction and catalyst regeneration steps with at least one of these steps being carried out in a flow tube through which the catalyst solution and the reactants are streaming with high velocity as described in the parent Specification, the reaction is carried out at a temperature above 150 DEG C. and under a pressure which is higher than the saturation vapour pressure of the catalyst solution at the reaction temperature used but not more than 15 atm. above it. Suitable redox systems are those formed by compounds of copper, mercury, cerium, thallium, tin, lead, titanium, vanadium, antimony, chromium, molybdenum, uranium, manganese, iron, cobalt or nickel.  It may be advantageous to add to the reaction mixture compounds which produce chlorine atoms, e.g. a chloride of sodium, potassium, lithium, calcium, magnesium, iron or zinc or cupric chloride.
Patent GB-867864-A (GB)
Title: Improvements relating to operating circuits for low pressure electric discharge lamps
Inventor: CLARKE MAURICE GEORGE
IPC: H05B41/04
Filed: 1956-12-03
Abstract: 867,864. Discharge lamp circuits. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Oct. 22, 1957 [Dec. 3, 1956], No. 36930/56. Class 38 (4). A circuit for operating one or more fluorescent lamps 1 from a D.C. supply 5, 6 has cathodic electrodes 3a indirectly heated by a filament 4 controlled by a time switch 8, which closes at the same time as, and opens a short time after, a main switch 7. Resistors R1, R limit the heater and discharge current respectively. The lamps and heaters may be arranged in any series and/or parallel arrangement.
Patent GB-442964-A (GB)
Title: Improvements in or relating to the concentration of latex
IPC: C08C1/08
Filed: 1934-12-24
Abstract: In the creaming of latex, the operation is interrupted when the rate of creaming begins to decrease rapidly, the serum is separated and replaced by water or latex, creaming agent is added to replace that removed with the serum, and the operation is continued.  The "break" in the rate occurs: (a) When the rubber-rich portion contains 45-55 per cent total solids, (b) in one-fifth to one quarter of the normal time for creaming to 60 per cent total solids, (c) when the volume of serum is 30-45 per cent of the latex, (d) when the rate of serum separation falls to a predetermined amount.  This last depends on the nature of the latex.  With fresh, untreated latex, this is about 0,5-1,0 per cent per hour; with old latex or fresh latex to which soap has been added, 2-3 per cent; latex which has been agitated as described in Specification 417,162, or subjected to an electrical potential as described in Specification 344,647, 4-6 per cent of the total latex.  This operation may be repeated as many times as desired, the final operation only being allowed to continue until a 60 per cent cream is obtained.  Specification 413,185 also is referred to.
Patent GB-871397-A (GB)
Title: Improvements in or relating to propylene polymers and their preparation
IPC: C08F6/28
Filed: 1957-11-27
Abstract: A linear isotactic polymer of propylene having an average molecular weight greater than 30,000 as determined viscosimetrically and a melting point, as determined by the disappearance of birefringency under the crystallographic microscope of from 174 DEG -175 DEG C., is made by extracting a polymerization product of propylene, of which a major proportion is present in the form of crystallised matter consisting predominantly of isotactic matter having an average molecular weight greater than 30,000, using a solvent which, at the extraction temperature employed, has a solvent power for block polypropylene which is equal to that of 2-ethylhexane at a temperature of from 100 DEG -150 DEG C., the extraction being continued until the residue therefrom has a meltingpoint of 174 DEG -175 DEG C. The polymerization product is preferably obtained using a catalyst comprising TiCl3 and an aluminium alkyl compound, although other compounds of metals of Group IVa, Va or VIa in which the metal has a valency lower than the maximum may be used instead of TiCl3. The solvent may be 2-ethylhexane or n-octane used at 100 DEG -150 DEG C., preferably 120 DEG C., or may be trichloroethylene used at 70 DEG -100 DEG C.  The polymer must be in a crystalline state before extraction and quenched polymer should be annealed before treatment. The polypropylene may be made into textile fibres and pipes and may be used as packing for sterilized food.  Prior to the above extraction the polypropylene may be subjected to treatment with an alcohol such as methanol or butanol and dried.  Specifications 810,023, 828,791, 849,106 and 850,585 are referred to.
Patent GB-1512957-A (GB)
Title: Gephalosporin antibiotics
IPC: C07D501/32
Filed: 1974-08-23
Abstract: Syn-isomers or mixtures of syn- and anti-isomers, the amount of the syn-isomer being at least 90%, of novel antibiotically active 7  beta -acylamidoceph-3-em-4-carboxylic acids of the formula I, in which     R denotes furyl, thienyl or phenyl; R<a> denotes C1-C4-alkyl, C2-C4-alkenyl, C2-C4-alkynyl, C3-C7-cycloalkyl or phenyl; R
 denotes C1-C4-alkyl, C2-C4-alkenyl, C2-C4-alkynyl, C3-C7-cycloalkyl, benzyl or phenyl; and   B denotes  &rdurule& S or  &rdurule& S->O are prepared by reacting an appropriate 3-hydroxymethyl compound, optionally with intermediate protection of the 4-carboxyl group, with an isocyanate of the formula R
-NCO. Resulting 1-sulphoxides of the formula I can be reduced to the corresponding 1-sulphides. Resulting ceph-2-em compounds are isomerised to the corresponding ceph-3-em compounds. The process products are distinguished by a broad spectrum of antibiotic action in combination with high  beta -lactamase stability and by a good stability in vivo. <IMAGE>
Patent GB-1010307-A (GB)
Title: Improvements in or relating to melting by electron beams
IPC: B23K15/10
Filed: 1962-10-03
Abstract: 1,010,307. Electron beam apparatus. W. C. HERAEUS, G.m.b.H. Oct. 3, 1962 [Oct. 3, 1961], No. 37439/62. Heading B3R. [Also in Division H1]  In a method of welding metals or non-metals at about atmospheric pressure, i.e 0À5 to 2 atmospheres, by means of an electron beam a gas is used to protect the weld being formed. An electron beam generator has a filament 10 held at a low negative potential, e.g. - 90 kv. in a ceramic insulator and is located in an inner chamber 2 held at a low pressure, e.g. 10<SP>-4</SP> mm. Hg. The electron beam 12 is concentrated by known electrostatic or magnetic means (not shown) and passes to atmosphere through apertures 13-15 in walls 9, 10, 16 which form chambers 3, 4 held at successively increasing pressures. A chamber 17 provides a protective gas shield of slightly above atmospheric pressure. The beam passes through a plate 20 having an annular slot 23 also delivering a protective gas, e.g. argon or helium. The workpieces 25a, 25b to be joined are held by a holder in mutually abutting relationship, the joint being fed with protective gas such as argon or helium through a channel 30. The generator moves relatively to the work which is normally stationary. The spacing between the beam outlet and workpieces should be less than 20 mm., preferably 10 mm.
Patent GB-1200355-A (GB)
Title: Break spinning method and apparatus
IPC: D01H4/10
Filed: 1967-08-15
Abstract: 1,200,355. Break spinning apparatus. TORAY INDUSTRIES Inc. and HOWA MACHINERY Ltd. 15 Aug., 1967 [18 Aug., 1966; 22 March, 1967; 19 April, 1967; 22 May, 1967; 5 June, 1967; 4 July, 1967; 12 July, 1967 (6)], No. 37443/67. Heading D1D. Bundles of fibres 2 from supply rollers 9, 9' are pneumatically shredded in device 10 which then directs the individual fibres onto the inside wall of rotor 13. Compressed air is introduced into chamber 12 creating a negative pressure in supply pipe 10' which causes a bundle of fibres to be sucked into pipe 10', the compressed air then flowing down delivery pipe 10 and the jet effect thereof causing individual fibres to be drawn out of the bundle as it leaves the supply pipe 10 (31, Fig. 8). Length L does not exceed the average fibre length. The delivery pipe may flare outwardly with angle of flare # in range 5 to 30‹, or may have a plurality of air inlets 39, 40, 41 and air outlets 42 in its end portion. Two or more such pneumatic devices may feed fibres to a common rotor. To increase the number of twists imparted to a unit length of yarn the lower inside wall of the rotor may be roughened, or have one or more projections 100 (Figure 27B) on it and be apertured at 104, or alternatively an elastic twist controller in the form of an insert in the hollow tube connected to the central rotor outlet may be provided. The fibre receiving surface 62 of the rotor (Fig. 27B) may be stepped and may include more than one annular roughened portion. The yarn withdrawn from the rotor may be stretched by heating or by passing it between two successive pairs of rollers which rotate at different speeds.