baber/WOPTO huggingface dataset:
Patent GB-987817-A (GB)
Title: Alloying method
IPC: H01L23/29
Filed: 1963-04-22
Abstract: 987,817. Semi-conductor devices. MOTOROLA Inc. April 22, 1963 [June 13, 1962], No. 15835/63. Heading H1K. A semi-conductor device is made by providing one face of a semi-conductor wafer with a plurality of spaced metallic films, depositing over the entire wafer face and films a coating of material which remains rigid or semi-rigid at the subsequent alloying temperature, heating to alloy the films to the wafer, removing the coating and subdividing the wafer into elements each having at least one contact. In a typical case arsenic or antimony is diffused into a 111 face of a prepared P type germanium or silicon wafer to form a sub-surface PN junction, and pairs of metal films vacuum deposited on the treated surface. One of each pair of films is of aluminium and the other of gold-antimony alloy preferably overcoated with silver. A silicon oxide layer 400-2000 Š thick is formed over the entire face by hydrolysis of silicon tetrachloride at room temperature, the process being described in detail. After heating to the alloying temperature for a fraction of a second the assembly is cooled, the oxide layer removed by treatment with hydrogen fluoride vapour, and the wafer further treated and subdivided into mesa devices of the construction shown in Fig. 1. The oxide layer may alternatively be formed by vacuum deposition of the oxide, evaporation of silicon in an oxidizing atmosphere or pyrolysis of silicate esters of organic compounds. Aluminium oxide formed by hydrolysis of aluminium chloride with the wafer maintained at 150-200‹ C. may also be used for the coating.
Patent GB-497059-A (GB)
Title: Improvements in paper
IPC: C03B13/10
Filed: 1937-06-08
Abstract: 497,059. Paper containing vitreous filaments. NAAMLOOZE VENNOOTSCHAP MAATSCHAPPIJ TOT BEHEER EN EXPLOITATIE VAN OCTROOIEN: June 8, 1937, No. 15850. Convention date, Feb. 10. Addition to 483,769. [Class 96] Paper, according to the parent Specification is modified in that it contains the vitreous material in the form of strands of fibres, matted or felted fibres, threads or fabrics, i.e. after the fibres have been worked into a particular form. The product is suitable as insulation for electric cables, accumulators or condensers, or for making paper bags or paper cords. The paper may have a lustrous appearance and may have some transparency or translucency. The glass may be coloured, opaque, metallized, luminous or may absorb ultra violet rays. The paper may be used for printing, advertising, painting, drawing, photography, book covers; wrapping paper, boxes, or lampshades, or for making articles of various shapes. The Specification as open to inspection under Sect. 91 includes the addition of powdered or granular glass to the paper either on the wet part of the paper making machine or at the heater. This subject-matter does not appear in the Specification as accepted.
Patent GB-880182-A (GB)
Title: Improvements in the manufacture of bread
Inventor: BUTTERWORTH SAMUEL WALTER
IPC: A21D8/02
Filed: 1960-05-05
Abstract: 880,182. Bread making; bakery apparatus. RANK Ltd., JOSEPH. May 5, 1960, No. 15889/60. Addition to 771,361. Classes 28 (1) and 49. In the manufacture of bread according to the parent Specification, the ingredients of the bread are mixed together in a continuously operating dough-mixing machine. The dry ingredients of the dough in a storage vessel d are continuously weighed by a device c and fed by a hopper b into an axial flow mixer a driven by a motor m, whilst fluid ferment from a tank e is metered through a pump f and a pipe line g and fat or oil are introduced through a line Z. Oxygen or oxygenated air may be infused into the flow in pipeline g through a valve i or, alternatively, introduced directly through one or more inlets j. The dough is then extruded through an outlet k for subsequent processing, e.g. baking in tins. In an alternative arrangement, the hopper b comprises a chamber having upper and lower pneumatically operated gates, opening and shutting alternately, the contents being charged to the mixer by supplying compressed air to the chamber. The dough is discharged from the mixer through a bottom gate to an extruding cylinder from which it is discharged on to a conveyer for further treatment.
Patent GB-1100160-A (GB)
Title: Stabilized electrical control circuit
IPC: H05B41/392
Filed: 1966-04-12
Abstract: 1,100,160. Supply systems for discharge lamps. GENERAL ELECTRIC CO. 12 April, 1966 [28 April, 1965], No. 15931/66. Heading H2H. [Also in Division G3] A load 1, e.g. a fluorescent lamp, is supplied from an A.C. source 2 by way of an impedance 6 and back-to-back thyristors 7, 8 which receive firing pulses from a circuit including a resistor 10, a capacitor 11, a glow lamp 12 and a pulse transformer 9. A currentdependent voltage derived from impedance 6 is applied to a lamp 30 associated with a photo-sensitive device 15 connected to the firing circuit which is thus controlled, in dependence upon variations in load current, to vary the firing angle of thyristors 7, 8 in such a manner that the power to the lamp is maintained constant thus ensuring a constant light output. A thermistor 31 in the current feedback circuit compensates for variations in ambient temperature and a photo-sensitive circuit 40, 4<SP>1</SP>, 42, 43 is associated with the firing circuit so that the lamp 1 may be automatically switched on and off at a desired ambient light level. A Zener diode device 16 protects the thyristors from transient voltages.
Patent GB-1512177-A (GB)
Title: N'-sulfonyl-n"-dihalophenylimidazolidinediones
IPC: C07D233/80
Filed: 1976-04-20
Abstract: 1512177 Fungicides SUMITOMO CHEMICAL CO Ltd 20 April 1976 [22 April 1975] 15948/76 Heading A5E [Also in Division C2] Fungicidal compositions comprise imidazolidinedione derivatives of formula: where each X is independently halogen, R 1  is C 1-12  alkyl, C 2-4  alkenyl or C 1-4  haloalkyl having 1-3 halogens, and R 2  and R 3  are H or methyl. A list of other active ingredients which may be present is given.
Patent GB-494036-A (GB)
Title: Improvements in or relating to badges and means for the attachment thereof to motor vehicles, motor boats and other vehicles
IPC: B60R13/00
Filed: 1937-06-09
Abstract: 494,036. Badges for motor vehicles &c. HUDLASS, F. W., and GOWER, J. F. June 9, 1937, No. 16008. [Class 73] A badge comprises a flanged back plate 2, a separate emblematic part 1 and central button 9 secured thereto by a central screw 8. The parts 1 and 9 can be rotatably adjusted with respect to each other and to the back plate 2 which is furnished with two screwed studs 10, 11 by means of which the badge can be secured to a support 13. The badge can be mounted on a radiator by a central screwed member replacing the screw 5, or on other parts of the vehicle by suitable fitments.
Patent GB-594034-A (GB)
Title: Improvements in shoes, sandals and like footwear
IPC: A43B3/24
Filed: 1946-08-20
Abstract: 594,034. Soles ; uppers. WHITESIDE, R. D. Aug. 20, 1946, No. 16014/45. [Class 17 (ii)] The inturned edge of the upper of a sandal or like article of footwear is ' clamped in a readily detachable manner between two soleshaped base parts, so as to be replaceable. The inner base part and the upper are provided with interfitting locating means for positioning the upper before the two base parts are secured together by means independant of the locating means. As shown applied to a shoe of the wedge type, the base parts comprise a flexible inner part 15 of material such as synthetic resin provided with a series of downwardly projecting pegs or pins 26 moulded integrally therewith and three lugs 27, 28, 29. Perforations formed in the inturned lower edge of the upper (not shown) fit over the pegs 26 to locate it thereon. The outer base part 16, of synthetic resin, metal or other material is formed of two hollow portions hinged together by. means of flexible material 19, such as belting, held by means of pins 20. An internal rebate 21, provided with inward projections 22, 23 runs around the outer edge of base part 16 and a further projection 24 is' provided on a transverse wall. The two base parts are locked together by means of lugs 27, 28, 29, whose mating surfaces are inclined so as to give a wedging action, engaging with inward projections 23, 24, 22 respectively, the pegs 26 entering the rebate 21. An inner sole may be stuck to the upper side of the upper base part and an outer sole to the lower part of the lower base part. In a modification, the lugs and projections are omitted and the inner and outer base parts are clamped together by means of three centrally disposed screws passing through holes in the inner base part into screws-sockets in the outer base part and pegs engage' in separate holes in the lower base part.
Patent GB-350701-A (GB)
Title: Improvements in or relating to adjustable curbs, fenders or like devices for domestic hearths and the like
IPC: F24B1/198
Filed: 1930-05-24
Abstract: 350,701. Domestic fenders. WITTON, F. H., 308, Summer Lane, Birmingham. May 24, 1930, No. 16030. [Class 126.] An adjustable fender or the like comprises end portions d sliding in a central portion a and telescopically connected by members independent of the central portion, these members consisting in the form shown of two rods i, each end portion d having one of the rods secured to it and being formed with a hole to receive the end of the other rod. A clamp carried by the central portion a engages the rods i or equivalent members to secure the parts in the adjusted position. The clamp shown comprises a fixed part g forming cradles for the rods and a clamping plate k secured by a nut p. The end sections are provided with projecting keys e sliding in grooves c in the centre section.
Patent GB-529467-A (GB)
Title: Improvements in switches of the type used in telephone systems
IPC: H01H63/04
Filed: 1939-06-01
Abstract: 529,467. Automatic exchange switches. GENERAL ELECTRIC CO., Ltd., and DEWAR, G. June 1, 1939, No. 16121. [Class 40 (iv)] In a single-motion wiperswitch, each collecting ring 12 is displaced axially from the corresponding wipers 11 so that the tip of the latter does not engage the root of the collecting brush. The collecting brush comprises as usual two tines which are sprung apart but to facilitate assembly of the switch a projection 7 is formed or provided on one of the tines for latching them when they are pressed together.
Patent GB-655257-A (GB)
Title: Improved apparatus for handling stands of pipe in a derrick
IPC: E21B19/14
Filed: 1947-06-18
Abstract: 655,257. Handling pipes in derricks. STANDARD OIL DEVELOPMENT CO. June 18, 1947, No. 16149. Convention date, Aug. 22, 1946. [Class 85] In apparatus for handling pipes in a derrick, one or more platforms mounted in the derrick are arranged to be moved laterally by one or more power operated means also mounted in the derrick. In Fig. 1, the derrick 1 includes draw-works 3 which raises or lowers the drill stem through rope 4, auxiliary hoist 41 for suspending single stands of drill pipe through rope 42, upper and lower means A, B adapted to grasp the ends of a stand and move same laterally, and means D, as described in Specification 655,156, [Group XXII], for moving the stand towards means A, B. The means A comprises a track 11, Fig. 4, fixed to the derrick and supporting a bed-plate 18 movable by a motor 15 and screw 14, the bed-plate carrying a foot-plate 17 and a hook 26, as described in Specification 650,814 for engagement with the stand. The means B is similar but has no foot-plate.
Patent GB-429548-A (GB)
Title: A process for the manufacture of bituminous road oils
IPC: C08L91/00
Filed: 1934-05-31
Abstract: The coating and adhesive properties of bituminous road oils with respect to mineral aggregates are improved by incorporating with the oils small quantities of substances consisting of high-molecular, saponifiable or neutralisable, organic acids or derivatives thereof, such as solid fatty acids, e.g. stearic acid, montan wax, Carnauba wax, solid resins, acid oxidation products of paraffin wax, other waxes, fatty oils, resins and the like, or fractions separated from such oxidation products, especially fractions containing oxy-acids, or other substances containing oxy-acids.  The use of liquid higher fatty acids, such as oleic acid, is excluded.  The oils treated are bituminous oils liquid at ordinary temperatures, and include cut-back bitumens, heavy mineral oils and mineral oil residues.  The amount of added substances is preferably from 1 to 2 per cent, and in general not more than 5 per cent.
Patent GB-1369885-A (GB)
Title: Valve assembly
IPC: F16K5/22
Filed: 1972-04-10
Abstract: 1369885 Valves ROCKWELL INTERNATIONAL CORP 10 April 1972 [9 April 1971] 16352/72 Heading F2V The tapered valve plug 14, having a through bore 15, is biased on to its seating 12 by way of two stacks of Bellville spring plates 58, 61 which are centred upon a thrust button 56 and which are contained within cup-shaped sheet-metal retainer 62. The retainer 62 engages one side of one or more flexible stainless steel diaphragm plates 43 which are clamped against the valve body 13 by way of a cap 44 and which, on their other side, are engaged by an adjustable abutment 64. The thrust button 56 and valve plug 14 have interposed therebetween a ball member 55. The biasing assembly is substantially contained within a multi-diameter recess 51-54 formed in the valve plug 14. Rotation of the plug between its open end closed states is effected by way of a spindle 22 a portion 21 of which is engaged in diametral groove 19 formed in a coupling block 18, the block 18 having a second groove 17 which is transverse to groove 19 and which accommodates a diametral rib 16 formed at the small end of the valve plug 14. The valve seat is formed with annular and short recesses 32, 35 and 33, 36, respectively and the valve plug is formed with annular and longitudinal grooves 31, 34 and 38 respectively. The arrangement of these recesses and grooves is such that they are in mutual communication in both the open and closed states of the valve, but in no intermediate state and so receive lubricant from a valve chamber 28. Chamber 28 is supplied with the lubricant from a stick thereof contained within operating spindle 22, forced inwardly by a pressure screw 26, and controlled by a check valve 29.
Patent GB-273688-A (GB)
Title: Improvements in or relating to the photo-mechanical production of printing blocks
IPC: G03F7/06
Filed: 1928-02-18
Abstract: 273,688. Schwimmer, K. H., and Paweck, H. Feb. 18, 1928. [A Specification was laid open to inspection under Sect. 91 of the Acts, July 1, 1927]. Photo-mechanical printing-surfaces.-Electrotypes are made from a silver image on an ordinary plate by dissolving out with warm water the soluble unexposed gelatin which remains after developing, rendering the remaining relief conductive by dusting it with black lead, and taking an electrotype from the conductive relief. A developer with some hardening properties is used. For colour printing the gelatin relief should be hardened, as with formalin or aluminium sulphate, before being made conductive. According to the Specification as open to inspection under Sect. 91 (3) (a), a relief printing block is produced from a negative, positive, or half-tone image formed in a gelatino-silver layer on glass or film by soaking the layer in any known manner, for example in water only, rendering the relief so produced conducting as with graphite, and depositing thereon galvanoplastically a copper coating which is removed from the glass or film after the usual setting up for the press. The image may be transferred before treatment. This subject-matter does not appear in the Specification as accepted.
Patent GB-773876-A (GB)
Title: New or improved process for the manufacture of mica papers
Filed: 1953-06-15
Abstract: A damp pulp containing mica flakes as its main constituent and which may also inclue glass, silica, or asbestos fibres is sprayed, brushed, or rolled on to a supporting surface which may be absorbent, and which may be temporarily or permanently coated; the liquid evaporating, and the mica flakes adhering to each other without the aid of a binder.  The pulp may include a substance which will attack the supporting surface and ensure adhesion thereto.  Specifications 591,388, 661,876, 661,877 [all in Group VIII] and 694,391 [Group V] are referred to.
Patent GB-676840-A (GB)
Title: Improvements in or relating to microwave apparatus
IPC: H01J23/36
Filed: 1950-06-30
Abstract: 676,840. Valve modulating circuits. WESTERN ELECTRIC CO., Inc. June 30, 1950 [July 1, 1949], No. 16391/50. Class 40 (v). In an ultra-high-frequency apparatus having a valve with a grid septum forming a common boundary between the cathode-grid and anodegrid resonant cavities, a co-axial quarter-wavelength transformer is employed to match the anode-grid cavity to the output circuit. The carrier to be modulated is fed over wave-guide 57, Fig. 2, to the cathode-grid cavity 49, while the modulating signal is fed over network 65 to the cathode 40. The capacity between the cathode and the shell 44 in contact with the spring fingers 52 effectively shortcircuits the modulating source at carrier frequencies, the modulating frequency being prevented from passing down guide 57 due to its dimensions. The resonant cavity 50 formed by the plane grid 38, anode 39 and the walls of the cylindrical block 73, is tuned by displacing the block for coarse tuning and cylinder 74 for fine tuning. The length of the bore of cylinder 74 is chosen to be a quarter-wavelength at the selected side-band frequency to match the low impedance presented by the anode-grid cavity to the higher impedance of the output guide 70. To prevent energy at the side-band frequencies from passing into guide 57, adjustable screws 68 are provided while a filter 93 discriminates against unwanted frequencies in the output. Coarse tuning is effected by displacing the block 73 by means of tools passing through an insulating disc 82, Fig. 3, into screwed holes 76, the cylinder 74 being of such a length that the quarter-wave transformation is unaffected. Fine tuning is effected by means of a screw-driver 94 of a dielectric constant near unity which engages a rod 98 screwed into a disc 97 attached to the cylinder 74. Rotation of the screw-driver causes the cylinder to rise and fall, a pin 100 preventing the cylinder from revolving. A screwed stud 84 allows matching of the guide 70 and cavity 30. The band-width of the anode resonant cavity may be increased by slidable resistive elements 81 displaced by screws 80. The H.T. supply to the anode is fed through a quarter-wave stub 86 and wire 88, the stub being shorted by a small disc capacitor 89 to the walls of the cavity 30. A tuning screw 58, Fig. 2, improves the match between the guide 57 and cathode cavity 49. The anode current may be stabilized by returning lead 23 through a cathode resistor to a point negative with respect to earth. In a modification, Fig. 4 (not shown), a quarter-wave line is used to isolate the modulating source and a quarter-wave stub in the anode feed is terminated by a quarter-wave disc.
Patent GB-611209-A (GB)
Title: Improvements in or relating to microphones
IPC: H04R9/08
Filed: 1944-08-29
Abstract: 611,209. Microphones. STANDARD TELEPHONES & CABLES, Ltd., and GAYFORD, M. L. Aug. 29,1944, No. 16408. [Class 40 (iv)] In a compound microphone comprising a microphone of the velocity or pressure-gradient type and a microphone of the pressure type, the first-named microphone has two permanent magnets co-operating with polepieces having edges adjacent to the vibrating. member of the first microphone and the second-named microphone is located between the two permanent magnets of the first microphone. The ribbon 11 of the velocity microphone is located in a horizontal gap formed between parallel portions 9, 10 of V-shaped polepieces 5, 6 secured by bolts 8 to non-symmetrical U-shaped magnets 3, 4 joined at the rear by a tie-rod 7. The permanent magnets are recessed to accommodate the spherical casing of a moving-coil microphone 1 which may be as shown and described in Specification 570,337, the diaphragm 14 being located as near as possible to the ribbon 11. Polar response curves for the compound microphone in respect of frequencies up to 9000 cycles per second are indicated by the curves of Fig. 4 (not shown) and were obtained by connecting the moving-ribbon output to a step-up transformer of which the output was connected in series with the output of the moving-coil microphone. Specification 530,483 also is referred to.
Patent GB-963306-A (GB)
Title: A control device for boilers and/or boiler drums
IPC: G01F23/24
Filed: 1962-04-30
Abstract: 963,306. Controlling fuel supply to boilers. W. FASEL. April 30, 1962 [April 28, 1961], No. 16417/62. Heading F4B. [Also in Division G3] When water falls below a predetermined level in a boiler, an electric supply circuit normally completed by the water is broken so that a relay directly energized through a transformer and rectifier from the supply circuit operates to control the supply of water or fuel to the boiler. In Fig. 2 rise of water level in a boiler drum 12 sufficiently to complete a circuit between electrodes E 1  and E 4  energizes an isolating transformer D from a low voltage mains transformer A so that a D.C. relay J is energized through a rectifier H to open a contact 10 and switch off the feed water pump (not shown). A selfholding contact 11 connects an isolating transformer C so that relay J remains energized until the water level falls below the end of electrode Eg whereupon the feed water pump is restarted. Should the water level fall, excessively, below electrodes E 1 , Eg an isolating transformer B is de-energized so that a relay G is also deenergized to cut off the supply of fuel to the boiler. Use of boiler 12 or casing 13 as one of the electrodes is referred to.
Patent GB-1256214-A (GB)
Title: Cigarette turn around device
IPC: A24C5/33
Filed: 1970-04-07
Abstract: 1,256,214. Delivering cigarettes in orderly arrangement. AMF Inc. 7 April, 1970 [30 April, 1969], No. 16417/70. Heading A2C. Double length cigarettes, comprising two cigarettes S1, S2 with a double length filter plug F interposed, are bisected by a knife 2 while carried on a fluted drum 1 from which the two rows of filter cigarettes S1-F1, S2- F2 so produced are transferred first to two coaxial fluted drums 103, 203 rotating at different speeds and thence to a drum 9 whereon the cigarettes S2-F2 of one row are reversed end for end and deposited between alternate cigarettes S1-F1 of the other row to form a single row of filter cigarettes similarly oriented. Flutes in the drum 1 are provided with compressed air passages whereby slight separation of the cigarette pairs can be effected after bisection. A disc 6, which is rotated about an axis oblique to the axis of rotation of the drum 103 and is driven by the latter by means of a friction coupling, displaces the row of cigarettes S1-F1 outwardly. Drum 203 has one less cigarette-holding groove, and is rotatably driven at a faster speed, than drum 103 so as to cause half a pitch offset between the two drums in a 180 rotation. Drum 9 carries two pairs of spaced grooved discs 109, 209 of which discs 109 are provided with equispaced deep grooves 10 to receive the row of cigarettes S1-F1 andwith shallower grooves 11 interposed to receive the other row of cigarettes S2-F2, while discs 209 are provided with the shallower grooves 11 only. Reversal of the row of cigarettes S2-F2 is effected by means of a pair of fluted frusto conical drums 12, 13. The cigarettes are held on the various drumsduring transport thereon as necessary by conventional mechanical guides or suction means.