baber/WOPTO huggingface dataset:
Patent GB-1470264-A (GB)
Title: Process for forming contact area between polycrystalline silicon and single-crystal silicon and semiconductor structures including such contact area
IPC: H01L21/3213
Filed: 1975-02-18
Abstract: 1470264 Semi-conductor devices FAIRCHILD CAMERA & INSTRUMENT CORP 18 Feb 1975 [1 April 1974] 6836/75 Heading H1K A semi-conductor device includes a single crystal silicon substrate 10, Fig. 1, covered by insulation 11, 12, and a polycrystalline silicon layer 13 over the insulation 11, 12 and contacting the substrate 10 through an opening 9 in the insulation 12, the polycrystalline silicon layer 13 having a tip 6, Fig. 7, of single crystal silicon which contacts the substrate 10, the tip 6 having a tapered portion 20. The silicon layer 13 is deposited from silane and automatically assumes a polycrystalline structure 7 over the insulation 11, 12, which may be silicon oxide, and a single crystal structure 6 over the single crystal substrate 10. This silicon layer 13 is then etched using a crystallographic orientationselective etchant, such as ammonium fluoridenitric acid, which etches the polycrystalline silicon preferentially to form the tapered structure 20. The silicon substrate preferably has (100) or (111) orientation.
Patent GB-1405390-A (GB)
Title: Display apparatus
IPC: G06F3/042
Filed: 1974-02-15
Abstract: 1405390 Selective signalling MITSUI SHIPBUILDING & ENG CO Ltd 15 Feb 1974 [22 Feb 1973] 6897/74 Heading G4H Display apparatus comprises a plurality of keys constituted by a plurality of electric lamps, a shift register adapted sequentially and cyclically to light the lamps, and a light pen utilized to receive the light from a lit lamp for stopping the shifting operation of the shift register, thereby identifying the key including the said lit lamp. This identity can be supplied to a computer which can also control the lamps by presetting the shift register.
Patent GB-734405-A (GB)
Title: Magnetic centring device for beam of cathode ray tubes
IPC: H01J29/54
Filed: 1951-03-22
Abstract: 734,405. Cathode-ray tubes. MAGNETIC DEVICES, Ltd. (Guardian Electric Manufacturing Corporation). March 22, 1951, No. 6931/51. Class 39 (1). A cathode-ray beam-centring device comprises three aligned annular discs 17, 28, 29, Fig. 4, and a pair of split ring permanent magnets 24, 26 with diametrically opposed poles, each outer disc 17, 29 having a portion fitting into the gap formed by the split in a magnet ring to anchor the magnet ring, and each outer disc 17, 29 being rotatable relative to the central disc 28. In Fig. 4 (exploded view) the permanent magnets 24, 26 are held in grooves in impregnated cardboard rings 17, 29 having tabs 18, 19; 30, 31 for independent manual rotation. The magnets are separated by an impregnated cardboard ring 28 and the whole assembly is mounted on an impregnated cardboard collar 35 against rolled edge 36 and the other edge 37 is then spun over. The rings 17, 29 may be rotated together or independently. The assembly is mounted on the tube neck by a resilient phosphor bronze strip 38, Fig. 5, bent into arcuate form. Holes 21, 32 in tabs 19, 31 indicate the amount of relative rotation, which may be 0 degrees or 90 degrees, or if no resultant field is required, 180 degrees. The tube has magnetic focusing and deflecting means and a fluorescent screen.
Patent GB-540574-A (GB)
Title: Improvements in or relating to friction couplings for use in spring housings
IPC: G04B1/18
Filed: 1940-04-18
Abstract: 540,574. Slipping couplings. LANDIS & GYR SOC. ANON. April 18, 1940, No. 7001. Convention date, Feb. 15. [Class 80 (ii)] A slipping friction coupling for a spring housing, to prevent overwinding of the spring, consists of a coil 9. Fig. 2, of spring wire surrounding a flange 8 on the stationary housing 1, one end of the wire having a hook 10, Fig. 1, by which it is connected to a rotatable disc 7, to which the outer end of the spiral spring 4 is attached. If the winding movement is continued after the spring 4 is fully wound, the coil 9 slips on the surface of the flange 8. The coil may be an expanding spring bearing against the cylindrical wall 3 of the housing, or it may surround the spindle 5 of the spring 4. The parts may be protected against wear by a facing of synthetic resin &c. or the housing may be formed of such material.
Patent GB-862435-A (GB)
Title: Improvements in or relating to change speed gears for motor driven vehicles
IPC: F16H3/24
Filed: 1959-03-02
Abstract: 862,435. Change-speed gear. SCHLEPPERWERK NORDHAUSEN VEB. March 2, 1959 [Dec. 22, 1958], No. 7150/59. Class 80 (2). A change-speed gear for motor vehicles providing four forward reduced, direct drive and four reverse ratios comprises aligned input and output shafts 1, 2 which carry slidably thereon a driving pinion 4 and driven pinions 8 ... 11, which former is moved to mesh a pinion 5 fast on a countershaft 3 for forward drive; or an idler 6 in constant mesh with a pinion 51 fast with the countershaft 3 and substantially equal to the pinion 5, for reverse drive; or is moved to bridge the shafts 1, 2 to act as a clutch sleeve for direct drive. With the driving pinion 4 in the forward or reverse position the pinions 8 ... 11 are selectively meshed with pinions 12 ... 15 fast with the countershaft 3 to select the gear ratio. The ratios are selected by two gear shift levers 16, 17, the latter of which has an arm 25 spring pressed into engagement with a shift fork 18 for the driving pinion 4 and which when turned moves the pinion 4 into the reverse or forward position in which latter the arm 25 abuts a stop (Fig. 3, not shown) preventing further movement into direct drive. An arm 24 of the shift lever 16 is selectively engaged with shift forks 20. 22 and is turned to move the gear-wheels 8 ... 11. For direct drive with the shift fork 18 in the forward position and the others 20, 22 in their neutral positions, the grooves in shift forks are aligned and the arm 24 may be moved to engage the shift fork 18 during which movement the arm 25 is moved out of the shift fork by an abutment 28 on the arm 24, an abutment 26 on the arm 25 sliding into a slat 29 to prevent turning of the lever 17. The shift fork 18 is then turned to the direct drive position during which an extension of the abutment 28 retains the arm 25 in the disengaged position.
Patent GB-553472-A (GB)
Title: Improvements in and relating to gas blast electric circuit breakers
IPC: H01H33/57
Filed: 1942-05-27
Abstract: 553,472. Gas-blast switches. BRITISH THOMSON-HOUSTON CO., Ltd. May 27, 1942, No. 7195. Convention date, May 28, 1941. [Class 38 (v)] In order to minimize the emission of flame from the exhaust of gas-blast switches and especially those in which additionally a gasevolving insulating material such as hard fibre or urea or methylmethacrylate resin is placed adjacent the arc, an auxiliary supply of fresh air is fed directly into the exhaust chamber beyond the arcing region, whereby combustion and cooling of inflammable gases is confined to that chamber. In the application to the switch of Specification 544,017, having fixed and movable contacts 3, 4, an arc chute 5 with diverging passages and cooling metal plates 12, and an exhaust chamber 13 with metal cooling plates 26, a pipe 23 leading from the main blast pipe 8 supplies the exhaust chamber 13 directly through an adjustable nozzle 24 and metal baffles 25 ensure thorough mixing and cooling of the gases. In a modification, Fig. 3 (not shown), air is induced from outside by suction through a series of inclined tubes opening in the chamber 13 in the direction of flow of the blast. Specifications 432,535 and 517,984 also are referred to. The Specification as open to inspection under Sect. 91 referred also to carbon-dioxide as blastmedium, and to axial-blasts. This subject-matter does not appear in the Specification as accepted.
Patent GB-933977-A (GB)
Title: Cartons
IPC: B65D5/498
Filed: 1961-02-28
Abstract: 933,977. Cartons. UNIPAK CARTONS Ltd. Feb. 28, 1961 [Dec. 29, 1960], No. 7216/61. Class 18. A carton of tubular form with end closure flaps 26, 27, 28, 29 has a load bearing member in the form of a double-walled longitudinal internal partition in which is enclosed a handle slidable from a fully retracted position within the carton to a second position in which the handhold portion projects through a slot 4 in the partition. The blanks for the carton and partition may be formed in one-piece as in Fig. 6, or separately, while the blank for the handle member is shown in Fig. 2. The shaded areas on all blanks are coated with pressure sensitive adhesive. The part 15 of the handle member is enclosed within the partition walls 1 and 2 which are folded together about the line 3. Both sides of tabs 5, 6 and 9 are coated with adhesive, and the doubled partition is folded about line 13 while the carton blank is folded about line A. The obverse side of tab 5 then registers with area 34<SP>1</SP>, the obverse side of tab 6 registers with area 33, and the obverse coated side of end tab 32 registers with the parts 9 and 34<SP>1</SP> to form the knock-down carton which can then be erected as in Fig. 5. Various forms of the one-piece blank are disclosed and the top closures may be omitted. Specifications 871,135, 896,091, 896,479 and 896,957 are referred to.
Patent GB-764737-A (GB)
Title: Improvements in or relating to electromagnetic wave transmission systems
IPC: H01P3/13
Filed: 1955-03-11
Abstract: 764,737. Waveguides. WESTERN ELECTRIC CO., Inc. March 11, 1955 [March 15, 1954; March 15, 1954], No. 7235/55. Class 40 (8). In order to prevent mode degeneracy in a waveguide transmission system utilizing the H01 mode of propagation the waveguide wall is formed from a helical conductor whose pitch is less than a quarter wavelength of the propagated energy. The helix is electrically discontinuous for longitudinal currents associated with the undesired dominant E mode. The turns of the helix 61, Fig. 6, may be spaced from each other or, if the helix is formed from a conductor having an insulating layer of enamel 62, they may be contiguous. If the helix is formed from aluminium wire 52, Fig. 5, the surface layer of oxide provides the insulation. In order to damp longitudinal currents the helix is surrounded by a layer 63 of lossy material, e.g. polyethylene containing ion dust or carbon black. The guide is encased in protective casing 64 of conductive material. Where the helix 52, Fig. 5, is formed from aluminium it is necessary to maintain its circularity by providing a winding 51 of spring steel between the lossy layer 53 and the casing 55. The lossy layer may be formed from a continuous ribbon which is wound with adjacent turns overlapping around the helix. The turns are fused together by heat. The helix may be formed from a wire of rectangular section with the wide dimension arranged parallel to the guide axis. The guide may be filled with lowloss dielectric material.
Patent GB-678466-A (GB)
Title: Improvements in electrically driven winches
Inventor: HOULDSWORTH WILLIAM
IPC: B66C13/26
Filed: 1950-03-23
Abstract: 678,466. Winches. WHARTON CRANE & HOIST CO., Ltd. March 22, 1951. [March 23, 1950] No. 7255/50. Class 78 (v). In two-speed winding apparatus of the kind in which the drum is driven by either of two A.C. motors, the drum 1 is driven through reduction gearing by a shaft 2 which is driven directly by the motor 3 and through reduction gearing 5 and a friction clutch 6 of the toggle type by a squirrel-cage motor 4, a brake 13 being provided to hold the shaft 2 when neither motor is energized. The clutch 6 is actuated by a yoke 7 keyed to a cross-shaft 8 which is rocked by a lever 9 actuated by an electrichydraulic thrustor 10 pivoted to the frame and push-buttoned controlled. A weight 11 disengages the clutch when the thrustor is de-energized. The yoke 7 moves slightly further after the clutch is engaged fully and this movement closes a switch 12 to energize the motor 4. The switches of the motors are interlocked so that only one of them can be energized at a time.
Patent GB-660697-A (GB)
Title: Improvements in or relating to refrigerating apparatus
IPC: F25B31/00
Filed: 1949-03-17
Abstract: 660,697. Cooling electric motors. STEVENS, A. H. (International Detrola Corporation). March 17, 1949, No. 7315/49. Class 35. [Also in Groups XIII and XXVIII] In a sealed motor-compressor unit for refrigerating systems comprising a motor M driving through a shaft S a compressor C, the low-pressure vapour enters the casing R and flows into a pipe 53, 52 wound around the stator 29 which is thus cooled. The pipe 52, held in place by clamps 61, leads into chamber 56 whence the gas enters the cylinder 50, the compressed gas flowing from chamber 60 to a pipe 58 which is in the form of a coil wound in part around the stator 29 and in part in the oil accumulated in the base of the casing. The coils 53, 52 and 58 act as mufflers. The refrigerant gas enters the casing through a filter. A shock-absorbing pad 7 is mounted in a dished part 6 of the top of the casing. The motor-compressor is mounted on three brackets 10 including shock-absorbing springs 16À Lubricating.-The bottom of the shaft S forms a rotary sliding-vane oil pump which sucks oil through an opening 69 and discharges it into a space 76 whence it flows into grooves 77, 78 to lubricate the lower bearing 37 and also into a central bore 79 in the shaft S. From the bore 79 oil flows through a radial hole 82 into grooves 83 to lubricate the upper bearing 32. Some oil continues up the bore 79 and is discharged through a radially-extending pipe 84 which, by centrifugal force, throws it against the casing where it is cooled before returning by gravity to the bottom of the casing.
Patent GB-615555-A (GB)
Title: Adjustment of the magnification factor q of a radio-frequency inductor
IPC: H01F21/06
Filed: 1946-03-09
Abstract: 615,555. Inductances. HOLZER, R. C. DE. March 9, 1946, No. 7402. [Class 38 (ii)] The Q value of an inductance having a dust core of permeability between 5 and 50 is decreased by introducing a small mass of ferromagnetic material of high resistivity and permeability between 5000 and 50,000 into a relatively weak part of the magnetic field. A coil 4 is wound on a bush 3 inside which is a magnetic dust core of two parts, a fixed part 2 and a part 1 movable by screw 9 for varying the inductance value. A wire 7 of high permeability is moved by a screw 8 in a groove 6 at one side of core part 2 in which the field strength is relatively small, the value of Q and dynamic resistance of the coil varying, but the inductance remaining substantially the same. The outer casing 5 may be of magnetic or non- magnetic metal. In an alternative construction, Fig. 4, a pair of curved strips 13 of varying width, of high permeability material, move in the leakage field of a coil 10 on a core 12 partially enclosed within a shell 11. Experimental results for coils of stated dimensions are given.
Patent GB-272608-A (GB)
Title: Improvements in or relating to rubber latex coagulating tanks
IPC: B29C65/00
Filed: 1926-03-17
Abstract: 272,608. Sarco Engineering & Trading Co., Ltd., (Kellitt, W.). March 17, 1926. Tanks.-Latex coagulating tanks are fitted with lining plates and transverse partitions of aluminium or other metal. The side lining plates B are provided with narrow grooves B' extending to the rear of the plane of the. plate for the reception of the partition plates E.
Patent GB-830768-A (GB)
Title: Method of producing amine-borines and amino-borines
IPC: C07F5/00
Filed: 1958-03-07
Abstract: Borazanes, borazenes or borazines may be obtained by reacting a boron halide of the general formula BHalnR3-n in which Hal is a halogen atom, R is an alkyl or alkoxy group and n is 1, 2 or 3, at a temperature between 40 DEG  and 120 DEG  C. with an alkali metal hydride and an organic primary, secondary or tertiary amine in the presence of a solvent or dispersant which is inert to the reaction components and to the final product and an alkali metal hydride activator consisting of an organic boron compound of the formula BRxR3-x, R and R1 being alike or different and being alkyl, alkoxy, phenyl or H, provided at least one R-group is present in addition to H, or a boric acid ester, or an organo-metallic compound or a metal alcoholate capable of reacting with the boron halide to form an organic boron compound of the above formula.  The preferred amines secondary or tertiary amines such as trialkylamines, morpholine, piperidine and the N-alkyl derivatives.  The amine may be added in stoichiometric quantities but generally an excess of 5 to 20% is best.  The preferred hydride is sodium hydride, but lithium or potassium hydride may also be used.  Suitable solvents are hydrocarbons, alkyl silanes, mineral oils or the borazane or borazene which is to be produced.  Satisfactory quantities of the alkali metal hydride activator are between 5 and 30 mol. %, but more or less may be used.  The process is usually effected at atmospheric pressure but a pressure of 2 to 10 atmospheres gauge may occasionally be an advantage.  The products may generally be separated from the reaction mixture by vacuum distillation.
Patent GB-495868-A (GB)
Title: Process for dephosphorising and desulphurising steel
IPC: C21C7/064
Filed: 1937-03-15
Abstract: In the dephosphorization and desulphurization of steel as described in the parent Specification, the steel containing sufficient dissolved oxygen to oxidize the phosphorus contained therein is poured into a receptacle and, during the pouring, a mixture of an alkali metal carbonate and an oxide having a high heat of formation such as alumina, titanic acid or silica, or a compound capable of evolving such oxides at high temperature such as an aluminate, titanate or silicate, is introduced into the jet of metal.  Instead of the oxides &c. mixtures which would produce the oxides or their alkaline compounds, such as aluminium and iron oxide or ferrotitanium and an oxidizing substance may be used. When the steel does not contain sufficient dissolved oxygen to oxidize the phosphorus, an oxide which is energically oxidizing with respect to the phosphorus as described in the parent Specification may be added to the mixture added to the metal.
Patent GB-622760-A (GB)
Title: Improvements in or relating to looms for weaving
IPC: D03D49/60
Filed: 1947-03-19
Abstract: 622,760. Loom beat-up motions. MARSDEN, C. March 19, 1947, No. 7543. Addition to 598,819. [Class 142 (iii)] In a beat-up motion as claimed in the parent Specification a vertical rod G is connected at its upper end to the pivot of the two toggle arms and at its lower end to a crank C on a transverse shaft C<SP>1</SP>. The shaft C<SP>1</SP> is driven by gearing c at the same speed but in the opposite direction to the main driving shaft A. When the crank C is set on back centre and the crank A<SP>1</SP> is set on front centre, the length of time for picking is increased and a heavier beat-up is provided.
Patent GB-880966-A (GB)
Title: Process for reducing the translucency of woven and knitted fabrics of polyamide fibres
IPC: D06M13/503
Filed: 1959-03-04
Abstract: Woven and knitted fabrics of polyamide fibres are impregnated in an aqueous acid bath containing a polyvinyl ester of an aliphatic carboxylic acid emulsified with an anion-active dispersing agent and aluminium formate or sulphate, dried and then calendered at a temperature of 150 DEG C-200 DEG C. to reduce their translucency. Preferred polyvinyl esters are polyvinyl acetate, propionate and butyrate and mixtures thereof, but copolymers of vinyl esters containing different acid residues and partially hydrolysed polyvinyl esters are also suitable.  Anion-active dispersing agents containing sulphonic acid or sulphuric acid ester groups, e.g. sulphated oils such as turkey red oils, are preferably used.  The pH of the bath may be adjusted by the addition of acetic acid.  The bath may also contain at least one non-ionic dispersing agent such as a polyglycol compound in which the polyglycol residue is bound to an amine, alcohol or mercaptan or to an acid containing at least 8 carbon atoms.  A mixture comprising a polyglycol ester of an aliphatic carboxylic acid of high molecular weight, a polyglycol ether of an aliphatic mercaptan of high molecular weight and a free aliphatic carboxylic acid of high molecular weight is preferably used.  The impregnating bath may also contain a small proportion of a reducing agent, e.g. hydrazine hydrate, to inhibit subsequent yellowing of the textile material or of the polyvinyl ester.  The concentration of polyvinyl ester in the bath may be 1%-10%, calculated on the weight of the fabric, and the concentration of aluminium formate or sulphate is preferably not greater than that of the polyvinyl ester.  The fabric may be impregnated at 20 DEG C.-50 DEG C. for 10-60 minutes and then dried at room temperature or raised temperatures up to 100 DEG C.  It is then calendered at 150 DEG C. -200 DEG C. with smooth or corrugated rollers, preferably with a pressure against the fabric of 30-70 kilograms per centimetre of length of the rollers.  The process may be combined with other treatments of the fabric, e.g. dyeing, softening, matting or antistatic treatments.
Patent GB-713422-A (GB)
Title: Improvements relating to combustion equipment for gas turbine engines
Inventor: JOHNSON FRANCIS MURRAY
IPC: F23R3/14
Filed: 1950-03-28
Abstract: 713,422. Generating combustion products under pressure. ROLLS-ROYCE, Ltd. June 4, 1951 [March 28, 1950], No. 7794/50. Class 51 (1) In an air jacketed type of combustion chamber for a gas turbine engine, primary air is introduced into the flame tube through a duct at the upstream end thereof, the duct terminating within the flame tube, being of cylindrical or frusto-conical form, lying on the axis of the flame tube and including swirl vanes. The duct is so dimensioned that the ratio of the length L thereof on the downstream side of the swirl vanes to the diameter of the duct is greater than unity. The diameter of the duct is defined as the internal diameter of the wall of a full cylindrical duct, the internal diameter of the outer wall of an annular duct, the mean diameter of the wall of a converging or diverging duct or the mean diameter of the outer wall of a converging or diverging annular duct. The combustion chamber has a fuel injector 11 which lies on the axis of the flame tube, the injector being surrounded by the tubular portion 8a of the flame tube wall 8 so as to constitute an annular duct 15 in which the swirl vanes 16 are mounted. The wall 7 of the flame tube is supported on a seating 20 formed on a conical duct part 21 which is supported within the combustion chamber casing by aerofoil section supports 12. The body of the fuel atomizing injector is mounted on an extension 12a of the supports 12 through which extend fuel passages 13, 14. The wall members 7, 8 may be perforated to allow a small air-flow therethrough to reduce the tendency of carbon formation. Specification 686,383 is referred to.
Patent GB-1291174-A (GB)
Title: Preparation of aryl halides
IPC: C07C51/00
Filed: 1970-02-18
Abstract: 1291174 Preparation of aryl halides ROHM. & HAAS CO 18 Feb 1970 [5 March 1969] 7836/70 Heading C2C A process for preparing aryl halides of formula wherein X is chlorine or bromine and R is a meta-directing, deactivating substituent, comprises heating in the presence of the corresponding halogen an arylsulphonyl halide of formula wherein X and R are as defined above. The meta-directing group may be a nitro, cyano, formyl, carboxy, trichloromethyl, trifluoromethyl, quaternary ammonium or carbalkoxy group. The reaction is preferably carried out at a temperature of 160 to 270 C. The examples describe the preparation of 3,5-dichlorosulphonylbenzoyl chloride.