baber/WOPTO huggingface dataset:
Patent GB-1328170-A (GB)
Title: Epitaxial deposition
IPC: C30B25/02
Filed: 1971-08-27
Abstract: 1328170 Epitaxial deposition of semi-conductor material INTERNATIONAL BUSINESS MACHINES CORP 27 Aug 1971 [29 Sept 1970] 40277/71 Heading H1K Lateral migration (autodoping) of dopant stems from a region 20 preformed in a semiconductor substrate 18 during epitaxial deposition of a layer on to the substrate from a gaseous reaction mixture comprising a carrier gas and a compound of the semi-conductor material is reduced by initially including only a relatively small proportion of the gaseous semiconductor compound in the carrier gas so as to deposit a layer 22 at a relatively low deposition rate and only subsequently increasing the gaseous proportion of the semi-conductor compound so as to deposit the rest of the epitaxial layer at a higher rate. The lower deposition rate for the layer 22 reduces autodoping at the substrate/layer interface. Preferred gaseous proportions, temperatures and deposition rates are given for deposition from SiH 4 , SiCl 4 , SiHCl 3 , GeH 4  or GeI 4  in a hydrogen carrier gas, nitrogen and argon also being mentioned as suitable carrier gases. III-V and II-VI compound semi-conductors are also referred to. Although as shown the epitaxial layer is of opposite conductivity type to the substrate, the layer and substrate may both be of the same conductivity type.
Patent GB-1078697-A (GB)
Title: Welding wire for the open-arc building up of metals
Inventor: IUZVENKO JURY ARSENJEVICH
IPC: B23K35/04
Filed: 1964-10-02
Abstract: A welding wire for open-arc deposition of 10-30% chromium steel consists of an iron case enclosing powdered fluxing and alloying ingredients and has the following composition:- .0.7-1.4%.chalk .3.5-5.8%.rutile .4-6.fluorspar .0.2-0.5%.aluminium .0.5%-1.5%.ferro-titanium .19.6-31.4%.alloying agents .remainder.iron case The alloying agents are:- .18-29%.ferro-chromium .0.3-0.5%.ferro-manganese .0.2-0.8%.graphite .1.1%.molybdenum Aluminium and molybdenum may be replaced by their ferro-alloys Steel deposits comprising 1.45-1.7% carbon, 11-12.5% chromium 0.4%-0.8% molybdenum, 0.1-0.3% titanium; or 2.2-2.6% carbon, 16-18% chromium, 0.3-0.4% titanium may be produced by such wires.
Patent GB-1125668-A (GB)
Title: Method of and apparatus for generating colour television signals
IPC: H04N9/04
Filed: 1966-09-12
Abstract: 1,125,668. Colour television. FERNSEH G.m.b.H. 12 Sept., 1966 [11 Sept., 1965], No. 40651/66. Heading H4F. The Specification describes a colour television camera comprising two colour tubes 12 and 15, Fig. 1 having respective photosensitive surfaces 11 and 14, Figs. 2 and 3. Red, blue and green images of the scene 1 being viewed are produced by dichroic mirrors 3-7. The red and blue images 8 and 9, are projected on to surface 11 to be horizontally adjacent. The green image 13 is projected on to surface 14. The horizontal scanning frequency of tube 15 is twice that of tube 12, such that, assuming synchronous starting, only the first red image line is scanned during during the scanning of the entire first line of green, image 13 and the next line of image 13 is scanned synchronously with the scanning of the first blue image line. The output of tube 12 thus alternates, at the tube 15 scanning frequency, from the red image to the blue image. To direct these alternating image scans into appropriate red and blue channels 24, a switch 22 operating in synchronism with the tube 15 scanning, switches output line 19 at contacts 21 and 21<SP>1</SP> alternately to channels 23 and 24, the shown (dark) position of the switch being that obtaining during the scanning of the red image. To ensure a continuous input to both channels, the previous scan from tube 12 is delayed by one line scan period (tube 14) in delay 17 and fed via contact 18 and switch 22, to the channel not being fed by line 19. The green channel 25 is supplied directly by tube 15.
Patent GB-406648-A (GB)
Abstract: 406,648. Turbidometers. KIDDE & CO., Inc., W., 140, Cedar Street, New York, U.S.A. Aug. 25, 1932, No. 23774. Convention date, Nov. 11, 1931. [Class 97 (iii).] Relates to installations for detecting smoke or suspended matter in fluids of the kind comprising a plurality of conduits for leading fluid from individual areas, means for maintaining a continuous fluid flow through the conduits, a detecting device, and means for connecting the conduits successively to the detecting device ; and consists in the provision of visual observation means in the individual conduits. The conduits 10, Fig. 1, are connected to a chamber 12 from which a pipe 13 leads to a suction fan 14. A member 29 adapted to be rotated in the chamber 12 by an electric motor 16 is provided with a passage 30. As the member 29 rotates, it successively connects the conduits 10 with a pipe 31 leading to a smoke-detecting device. This comprises a light source 39 and a selenium cell 41, passage of smoke across the light beam causing the cell to be illuminated by reflection. The exhaust of the fan 14 is passed to the chamber 38 enclosing the light source, for cooling purposes. Each conduit 10 is provided with a window 58 and an upward extension 59 furnished with a reflector 60. The latter reflects light from a source 61 down the conduit, so that smoke can be observed through the window. In a modification, Fig. 6, means is provided for interrupting the drive of the member 29 when smoke is detected. The member 29 is driven from the motor 16 through a friction clutch 17, 18 normally held engaged by a spring 19. The clutch can be disengaged by linkage from the armature 26 of a relay 25 when the latter is energized upon the detection of smoke. When this occurs, the clutch member 18 is braked by a surface 28, arresting the member 29. The latter is provided with a skirt 35 which can be observed through a window to ascertain which conduit was connected to the detecting device when smoke was detected. Fig. 8 shows an arrangement of circuits for use with the installation shown in Fig. 6. The voltage fluctuations caused in the circuit of the selenium cell by the incidence of light upon the cell are imposed on the grid of a thermionic valve 46, the plate circuit 47 of which includes a relay winding 48. The relay comprises three circuit contacts 49-51. The contact 51 closes a circuit through the winding 48 and a battery 53, so that the relay continues to be energized although the plate current due to smoke detection is momentary. Contact 50 closes the circuit 55 of an alarm bell 56, and contact 49 closes the circuit 57 of the relav 25. The relay 48 can be deenergized by a manual switch 54, restoring the member 29 to activity. Specification 399,449 is referred to. The Specification as open to inspection under Sect. 91 comprises also an arrangement similar to that shown in Fig. 6, but without provision for visual inspection of the fluid streams. This subject-matter does not appear in the Specification as accepted.
Patent GB-1431957-A (GB)
Title: Process for lightening the colour of olefinesulphonates
IPC: C09K23/02
Filed: 1973-08-29
Abstract: 1431957 Purifying olefine sulphonates CHEMISCHE WERKE HULS AG 29 Aug 1973 [29 Aug 1972] 40669/73 Heading C2C A process for purifying an impure olefin sulphonate manufactured by reaction of a longchain olefin with sulphur trioxide to produce a purified olefin sulphonate lighter in colour cornprises heating to a temperature of from 180 to 300 C. at autogenous pressure a mixture of the impure olefin sulphonate with water present in the mixture in an amount of from 1À5 to 9 parts by weight of the impure olefin sulphonate and as solvent a paraffin having from 5 to 22 carbon atoms an olefin having from 5 to 22 carbon atoms, an aromatic compound having from 6 to 10 carbon atoms or a mixture of two or more thereof, the solvent being present in the mixture in an amount of from 0À03 to 4 parts by weight per part by weight of the impure olefin sulphonate and the mixture having a pH of from 11 to 14, and separating at maintained pressure the resulting impurity-containing upper solvent phase from the lower aqueous phase containing the purified olefin sulphonate in solution. The solvent may be excess olefine contained in a partially sulphonated product.
Patent GB-889273-A (GB)
Title: Improvements in or relating to supports
Inventor: NORTON HARRY MILLINGTON
IPC: D05B77/00
Filed: 1960-11-30
Abstract: 889,273. Sewing machines. PINNOCK HOLDINGS Ltd. Nov. 30, 1960, No. 41174/60. Class 112 [Also in Group XIV] A sewing machine stand comprises a table, a pair of frames hinged about opposite edges of the table and movable from a raised position in which they serve as carrying handles and in which the table may rest on a horizontal surface, to a lowered and table-supporting position, and means to lock the frames in the lowered position. A table 1 is provided with a well 7 adapted to receive the base of a sewing machine. Connected to opposite edges of the table by hinges 5 are bars 11 from which project transversely rods 9 telescopically received with the parallel limbs of U-shaped frames 14. When the latter are raised, their inwardly-curved upper ends are positioned sufficiently close to one another to serve as carrying handles. In their lowered and extended position, shown in broken lines, the frames serve as supports, and are provided with rubber studs 29 to contact the floor. Each frame is provided with a brace member 19 pivoted at one end to one of the limbs of the frame and formed at its other end with a curved portion 21 adapted to engage the opposite limb of the other frame to lock the frames in the lowered position. The table is provided at one end with a hinged flap 31 which, when lowered, forms an extension thereto. The frames when raised can support a dust-excluding fabric cover.
Patent GB-1400534-A (GB)
Title: Synthetic diamonds
IPC: B01J3/06
Filed: 1972-09-07
Abstract: 1400534 Synthesis of diamond EDENVALE ENG WORKS (PTY) Ltd 7 Sept 1972 41592/72 Heading C1A Synthetic diamonds are made by subjecting a carbon containing composition to conditions of temperature and pressure below the Berman- Simon Line so as to cause decomposition of the material to release carbon atoms or groups thereof and effect conversion of the released carbon atoms or groups of atoms into diamond, the carbon-composition being free of covalent carbon-hydrogen bonds and being a carbon compound or a residual compound obtained by heat and/or chemical treatment of a carbon compound. Perhalohydrocarbons particularly chlorine compounds are exemplified, and chloranil is also suggested. A getter for the halogen gas, e.g. an alkali metal or alkaline earth metal may be present in the composition. The preferred getter is lithium. The temperature and pressure used may be below 2000‹ C. and 100 kilobars respectively. The composition is preably brought to the desired conditions in a series of steps.
Patent GB-982483-A (GB)
Title: Process for the purification of aromatic amines
Inventor: SUTCLIFFE DAVID
Filed: 1962-11-05
Abstract: Aromatic amines are purified by distilling the amine after the addition of oxalic acid or an oxalate of a monohydric alcohol containing up to four carbon atoms to remove orthodiamines. In an example tolylene diamine containing 2.6% ortho isomers has added thereto anhydrous oxalic acid and is distilled under nitrogen and the product on solidification contains 0.6% ortho isomer.  Other amines which may be similarly purified are aniline, m- and p-phenylene diamines, toluidines and naphthalene diamines.
Patent GB-957559-A (GB)
Title: Improvements in filters for gases
IPC: F24F13/28
Filed: 1962-11-05
Abstract: 957,559. Filters for gases. AUERGESELLSCHAFT G.m.b.H. Nov. 5, 1962 [Nov. 4, 1961]; No. 41754/62. Heading BIT. A filter for removing particles, e.g. chemical agents, from a gas, e.g. air, in which the particles are suspended comprises filter paper or filter cardboard 1 arranged in folds into which are inserted strips 2 of corrugated paper for absorbing water from the air. The corrugations extend vertically and the strips 2 extend beyond the folds to protect the latter and are preferably in the form of a double layer of corrugated paper. The filter is circular, the outer edge thereof being sealed with bitumen, over which are disposed rings 4 and 5 for fitting a housing. The filter may be used in conjunction with a carbon filter.
Patent GB-1083326-A (GB)
Title: Printing mechanism for a typewriter or like machine
Inventor: SCHONFELDER HERBERT
IPC: B41J1/60
Filed: 1964-10-14
Abstract: 1,083,326. Typewriters. OLYMPIA WERKE A.G. Oct. 14, 1964, No. 41912/64. Heading B6F. Machines with types upon spherical heads; type surface selection by rotary and tilting movements.-A typewriter is provided with a single element type head comprising an inner housing 36, Fig. 2, attached by pins 36<SP>1</SP>, 36<SP>11</SP> to an impression lever 35 and character selection lever 33, respectively, and provided with a guide surface 36<SP>IV</SP> for guidance of a type shell 7 mounted for rotation on a shaft 8, which is driven by a drive shaft 11 and the type head 7 is rotated for character selection by the shaft 8 and tilted by lever 33 about a pivot formed by the pin 36<SP>1</SP>. Power assisted type surface selection; keys operating electric contacts.-Type surface selection is effected by depression of a key 1, Fig. 1, which closes contacts 2, 4, the latter energizing one or the other of electromagnets 25a, 25b, whereby a link 88 rocks a bell-crank 30 and selection lever 33 to tilt the type head and bring one of characters 7<SP>IV</SP> into the printing position 38. Closure of contacts 2, 4 simultaneously energizes one of twelve electromagnets 17, Fig. 7, associated with a selector 16 whereby a dog 15 mounted on a continuously rotating splined shalft 14, which is driven by a friction clutch 9, 52, 54 (Fig. 8), is arrested by the displaced armature 19 of the energized electromagnet 17 to arrest the type head in the selected rotary position. Following selection of the type surface the dog 15 closes a contact which energizes an impression magnet 20 the latter attracting its armature 21 and thereby rocking levers 21<SP>1</SP> and 22 which in turn cause pivotal movement of the lever 35 towards the platen 37. Letter-spacing arrangements.-Pivotal movement of lever 35, Fig. 1, causes simultaneous rocking of plate 40<SP>1</SP> which mounts a pair of escapement pawls 75, 76 which co-operate with an escapement rack 74. Case-shift mechanism.-Particular rows of type surfaces 7<SP>IV</SP>, Fig. 1, on the type head are selected by appropriate energization of electromagnets 25a, 25b and 26, the energization being associated with a row of keys on the keyboard and the keys corresponding to the type surfaces in one column. The innermost columns are selected by energization of one or the other of magnets 25a, 25b whereby a web 49<SP>1</SP> is caused to abut one or the other of surfaces 28<SP>1</SP>, 28<SP>11</SP> on a yoke 28. Outermost columns are selected when additionally electromagnet 26 is energized to lift the yoke out of the path of the web 49<SP>1</SP> and the latter is then caused to pivot through a longer arc and abut one or the other of surfaces 90<SP>1</SP>, 90<SP>11</SP>.
Patent GB-1027075-A (GB)
Title: Pressing iron
IPC: H01H9/00
Filed: 1963-10-24
Abstract: 1,027,075. Electric irons. SUNBEAM CORPORATION. Oct. 24, 1963 [March 21, 1963], No. 42034/63. Heading H5H. [Also in Divisions D1 and H2] In a dual voltage, thermostatically-controlled, flash-steam, travel iron, two sheathed elements are embedded in the soleplate one above the other. The top element is shorted out for operation at 125V, and is used in series on 230V. to give the same total heat dissipation.
Patent GB-1403971-A (GB)
Title: Spring suspension arrangement for a motor compressor
IPC: F04B39/00
Filed: 1972-09-11
Abstract: 1403971 Compressors DANFOSS AS 11 Sept 1972 [14 Sept 1971] 42104/72 Heading F1N [Also in Division F2] A motor compressor 1 is suspended in a sealed casing 3, 4 by a plurality of helical springs 19, each spring being fixed to a supporting element 18 hinged to a carrier 17 welded to the casing. Each supporting element 18 is composed of a first part 22 which extends into the casing and receives the spring and an angled second part 23 provided with lugs 24 which co-operate with hooked ends 25 on the carrier thereby to form the hinge. To facilitate assembly of the motor compressor to the casing, the supporting elements are pivoted through 180 degrees whereby the parts 22 extend outwardly through the casing opening 5 later sealed by the casing cover 4.
Patent GB-1393423-A (GB)
Title: Semiconductor integrated circuit chip
IPC: H01L21/60
Filed: 1972-09-12
Abstract: 1393423 Semi-conductor devices INTERNATIONAL BUSINESS MACHINES CORP 12 Sept 1972 [3 Nov 1971] 42279/72 Heading H1K Damage to the surface of a semi-conductor chip 21 due to impact by the edges and corners of other similar chips such as 22 during handling is reduced by arranging a plurality of suitably situated and dimensioned projections on the chip surface. Some of the projections 19 may be contact pads, and additional projections 18 may also be provided having the same height and composition (e.g. a solder bump on a Cr/Cu/ Au layer) on the contact pads 19. Preferably at least 75% of the chip surface area is protected against impact in this way, protection not being necessary in certain regions of the surface where circuit function would not be impaired by the effects of chip impacts.
Patent GB-1513048-A (GB)
Title: Soil cultivating machines or cultivators
IPC: A01B33/02
Filed: 1975-10-15
Abstract: 1513048 Rotary cultivators TEXAS INDUSTRIES Inc 15 Oct 1975 [15 Oct 1974] 42340/75 Heading A1B A rotated shaft 8 carries a number of soil working means 25 spaced along its length and mounted on the shaft so as to be freely rotatable. The shaft 8 has its ends 10 journalled in the end walls 7 of a hood 6 and provided with sprocket wheels 26 driven via chains 27, sprocket wheels 28, shaft 29 and bevel gearbox 31 from the tractor power-take-off. The shaft 8 is of square cross-section and has clamped to it sets of four brackets 12, two of the brackets being provided with sleeves 14 which rotatably receive stub shafts 15 of the soil working means 25. The means 25 include tines 22 secured in holders 20 welded to the sleeves 14. The axes of rotation b of the soil working means 25 are inclined at 15‹ to the perpendicular planes B. Neighbouring soil working means 25 are angularly offset by 90‹ around the rotation axis a of the shaft 8. The tines 22 trail with respect to the intended direction of rotation of the soil working means 25. The tines 22 are of rhombic cross-section, and provided with grooves.
Patent GB-933477-A (GB)
Title: Improvements in and relating to means of access to boats, rafts or the like
IPC: B63B27/14
Filed: 1959-12-17
Abstract: 933,477. Ladders for inflatable rafts &c. NAUTIQUE SPORTIVE. Dec. 17, 1959 [May 9, 1959], No. 42888/59. Class 20 (2). [Also in Group XXXIII] An inflatable raft 1 has steps 5, 6 and 7 supported from inflatable struts 3 and 4, by flexible bands 8, 9 and 10 which are connected by flexible bands 11 and 12. The steps may be weighted and the arrangement may be accommodated within a recess in the raft, Fig. 3 (not shown).
Patent GB-1074878-A (GB)
Title: Solution polymerisation of acrylonitrile
IPC: C08F20/44
Filed: 1964-10-21
Abstract: Acrylonitrile polymers are prepared by polymerizing acrylonitrile together with 0-15 mol per cent based on the total monomers, of one or more copolymerizable monomers in dimethyl sulphoxide in the presence of at least one hydroxylamine salt, as a coloration inhibitor, and of an azobis compound catalyst having the formula <FORM:1074878/C3/1> wherein R is an alkyl group and X is a nitrile group, a carboxyl group or a carboxylic acid ester residue. Preferably, sulphuric acid is also present in the polymerization mixture.  Comonomers specified are acrylic and methacrylic acid and ester and amide derivatives thereof, styrene, vinyl chloride, vinylidene chloride, vinyl carboxylates, vinyl pyridines and alkyl derivatives thereof, alkenyl aromatic sulphonic acids and vinyl, allyl and methallyl sulphonic acids and salts of such sulphonic acids.  The organic solvent may desirably contain up to 5% by weight of water. Aaobisisobutyronitrile is the preferred catalyst. Hydroxylamine salts specified are the hydrochloride, sulphate, oxalate, phosphate and acetate and mixtures thereof with other salts, e.g. the so-called amine solution used in the production of epsilon-caprolactam (comprising hydroxylamine sulphate, sulphuric acid, ammonium sulphate and water).  Polymerization may be effected continuously or batchwise.  Examples illustrate the solution homopolymerization of acrylonitrile and copolymerization with (i) methyl acrylate; (ii) methyl acrylate and sodium styrene sulphonate; (iii) styrene; and (iv) methyl acrylate, sodium methallyl sulphonate and sodium beta-styrene sulphonate.  The polymer solutions obtained can be used directly for spinning into filaments and fibres. Reference has been directed by the Comptroller to Specification 834,524.
Patent GB-1522004-A (GB)
Title: Method for making multilayer devices
IPC: H01F41/14
Filed: 1975-10-21
Abstract: 1522004 Magnetic storage apparatus INTERNATIONAL BUSINESS MACHINES CORP 21 Oct 1975 [5 March 1975] 43064/75 Heading H3B A magnetic bubble domain chip is formed by coating a substrate 10 of magnetic bubble domain material, Fig. 1, with an SiO 2  insulating layer 11 and a metallic film 12 such as NiFe or Au, covering the film with a first resist layer 13 which is exposed and developed so as to uncover the film 12 in predetermined first and second areas 15, 14, depositing a layer of magnetic material 16, Fig. 3, in the first and second areas to define a magnetic bubble propagation path, applying a coating of resist 16 which is exposed and developed in a manner such as to expose the first area 15 and protect the second area 14, Fig. 4, depositing a conductive film 18 on to the layer of magnetic material 16 in area 15, and finally removing the resist layers 13, 17 by etching and the exposed portions of metallic film 12. The two resist coatings are preferably positive and negative, respectively, but may be of the same kind. The magnetic layer 16 and conductor layer 18 may be built up by electroplating on the metallic film 12 or may be formed by another deposition process. In Figs. 5 and 6 it is shown that the unprotected first area 15 includes the ends of an overlay magnetic strip 16, the subsequently deposited conductive layer 18 providing end connections so that the strip may function as a magnetoresistive bubble sensor.
Patent GB-936780-A (GB)
Title: Archery bow
IPC: F41B5/00
Filed: 1961-12-02
Abstract: 936,780. Archers' bows. J. F. LIGHTCAP. Dec. 2, 1961, No. 43169/61. Class 132 (3). An archer's bow is formed of an inorganic honeycomb member 15 sandwiched between a layer 21 of high compressive strength secured to its face and a layer 20 of high tensile strength material secured to its back. The honeycomb member 15 may be of aluminium having polygonal or circular openings in its core. The backing and facing layers 20, 21 may be of fibre glass. Strips 16, 17 of scrim cloth may be provided between the honeycomb member 15 and the layers 20, 21. A pair of side members, Fig. 3 (not shown), may be provided to give a finished appearance to the bow or alternatively the bow sides can be filled with an adhesive or synthetic plastic material. The honeycomb member 15 may extend from tip-to-tip of the bow or alternatively be fabricated with the handle portion 22 so as to extend from each end thereof.