baber/WOPTO huggingface dataset:
Patent GB-1280413-A (GB)
Title: Optical arrangement for hardness testing
IPC: G02B21/00
Filed: 1970-09-04
Abstract: 1280413 Optical depth gauge ERNST LEITZ GmbH 4 Sept 1970 [23 Sept 1969] 42462/70 Heading G1M A gauge for measuring the diagonal of a square indentation comprises a graticule 2 which is vertically displaceable in a housing 1 on rectilinear ball bearings 3-6 by means of a lever 9 pivoted at its end near a plunger 8 and contacting the plunger, the lever being mounted on an element 11 which may be slid to raise or lower 8 and the graticule by rotating a threaded spindle 12. A second graticule 20 supported on horizontal abutments 21 carries a hairline cross 201 orientated to cross on the optical axis of a viewing eyepiece so that movement of the graticule 2 and its line 2<SP>1</SP> relative to the hairline cross and a scale on the part 11 indicates the size of the indentation when the image of the hardness indentation is viewed through the eye-piece and aligned with the cross 20<SP>1</SP>. The spindle controls may be geared to a drum (31), Fig.3 (not shown) carrying a scale directly calibrated in hardness numbers.
Patent GB-1201186-A (GB)
Title: Improvements in or relating to solid rocket fuels
IPC: F02K9/12
Filed: 1967-09-19
Abstract: 1,201,186. Propellent charges. DYNAMIT NOBEL A.G. 19 Sept., 1967 [19 Sept., 1966], No. 42686/67. Heading F3A. A solid externally-burning rocket propellent charge, other than an end-burning charge, comprises at least two propellants of different burning rates, so arranged that on burning, one part of the burning surface proceeds in a direction towards a central axis of the charge, and another part of the surface proceeds at an angle to this direction. A cylindrical charge is shown in cross-section in Fig. 1 and comprises a highburning rate propellant 2 in the form of a star embedded in a low-burning rate propellant 1. During combustion, the area of the burning surface 3, and hence the thrust, remain substantially constant.
Patent GB-1390417-A (GB)
Title: Manufacturing electric lamps
IPC: H01K3/26
Filed: 1972-09-14
Abstract: 1390417 Glass lamp manufacture PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 14 Sept 1972 [17 Sept 1971] 42752/72 Heading C1M In the manufacture of an electric lamp in which a glass lamp part is heated by means of termal radiation to a temperature at which deformation of the glass part or sealing of the glass part to another lamp part of glass or other material, the area of the said glass part is coated with a layer of a radiation absorbing lacquer comprising a synthetic resin binder and a radiation-absorbing metal or metal oxide and the coated part is irradiated with thermal radiation until the glass part has softened during which the binder has volatilized completely. As shown, for sealing off the exhaust tube 5 of an incandescent lamp, a lacquer layer 7 is formed by immersion of the tube 5 in a paste of 25 grams of Cu 2 O in 75 grams of a 25% by weight solution of poly(methyl methacrylate) in xylene. The layer 7 is then irradiated by halogen incandescent lamps 11 each with reflector 10 and focusing lens 12. At about 300 C. the resin binder is decomposed, the vapours being exhausted through tube 5 and the lamp is evacuated or filled with gas. At the softening of the glass tube 5, the tube is pinched to seal the lamp. Other materials suggested are poly (methyl acrylate) and polystyrene in binder and silver; platinum and the oxides of Ni; Ta; W; Mo; Co; Cr; Mn; and Zr. With these materials, filaments of tungsten are not affected by reaction.
Patent GB-1275663-A (GB)
Title: Magnetic print formation
IPC: G03G19/00
Filed: 1969-08-28
Abstract: 1275663 Photoconductive recording material BELL & HOWELL CO 28 Aug 1969 [3 Sept 1968] 42767/69 Heading H1K [Also in Division B6] A recording element comprises a photoconductive layer 15 between electrodes 13 on a glass support 12 and having a layer 18 of magnetizable particles in heat-transfer relationship with the photoconductive layer. The magnetizable particles have a relatively low Curie point e.g. chromium dioxide whose Curie point is 100‹ C. In alternative embodiments the photoconductive and the magnetizable layer may be contiguous without an intervening electrode (Fig. 3, not shown) or a composite layer (50) of photoconductive and magnetizable materials may be used (Fig. 5, not shown). In the latter embodiment the magnetizable particles may each be encapsulated by an insulating layer to prevent them shunting out the photoconductive particles.
Patent GB-1024258-A (GB)
Title: Improvements in or relating to automatic frequency control circuit arrangements
IPC: H03J7/10
Filed: 1962-11-13
Abstract: 1,024,258. Automatic frequency control; radio receiving circuits. TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. Nov. 13, 1962 [Nov. 13, 1961], No. 42788/62. Headings H3A and H3Q. In an A.F.C. system for a receiver which is tuned by variation of a D.C. voltage applied to diodes acting as voltage variable capacitors in its R.F. and local oscillator stages, means are provided for varying the amplitude of the A.F.C. control voltage in dependence on which point on the non-linear voltage/capacity characteristic of the diodes the receiver is tuned in order to provide a constant sensitivity frequency control. The receiver includes R.F. stage 4 and local oscillator mixer 10 which are tuned by variation in the voltage applied to diodes 8 and 12, respectively, I.F. stage 15 and discriminator 16 which provides an audio output NF and a D.C. A.F.C. output which is applied via filter 18, 19 to the grid of the R.F. amplifier and appears, amplified, across resistor 21 in the anode circuit of the valve. The voltage at point 28 comprising a fixed D.C. voltage from source Vs and the amplified A.F.C. voltage is applied via switch 30 to potentiometers 23, 24 and the tap 25 on potentiometer 23 is connected to diodes 8 and 12. When tuned to a low frequency, point 1 on the diode characteristic shown in Fig. 1, a small tuning voltage and due to the steep slope of the curve, a small A.F.C. voltage are required and these are supplied by positioning tap 25 at the right end of the potentiometer. For a high frequency, point 2 on the curve, a high tuning voltage and due to the reduced slope, a high A.F.C. voltage is required and provided by positioning tap 25 towards the left end of the potentiometer.
Patent GB-1494990-A (GB)
Title: Two-stage pressure leaching process for zinc and iron bearing mineral sulphides
IPC: C22B19/20
Filed: 1976-10-15
Abstract: 1494990 Leaching zinc sulphides SHERRITT GORDON MINES Ltd 15 Oct 1976 [22 Oct 1975] 42970/76 Heading C1A Zinc and iron-containing mineral sulphides in finely divided form are pressure leached with sulphuric acid under a positive partial pressure of oxygen at 135-175 C. in two counter-current stages, with the mineral sulphides being fed to the first stage to produce a zinc sulphate leach-end solution which after purification, is subjected to electrolysis to recover cathode zinc, and the return electrolyte containing residual zinc values and sulphuric acid being fed to the second stage, wherein the quantity of sulphide fed to the first stage is adjusted relative to quantity of acid fed to second stage to provide at least one mole of zinc in first stage per mole of acid in second stage, and controlling the quantity of return electrolyte entering the second stage to give about 1 mole of acid per mole of zinc that has to be dissolved in the electrolyte to provide a suitable solution for said electrolysis, wherein the first stage leach solution has a pH above 1À0, less than 3 g.p.l. H 2 SO 4 , and less than 2 g.p.l. dissolved iron, and wherein the second leaching extracts all the zinc from the first leach residue, and the resultant second stage leach residue containing unreacted sulphides, elemental sulphur and precipitated iron is separated from the second stage leach solution containing extracted zinc, the latter solution being passed to the first stage.
Patent GB-1412044-A (GB)
Title: Inlet manifolds for internal combustion engines
IPC: F02D35/02
Filed: 1973-09-14
Abstract: 1412044 Heating charge ROBERT BOSCH GmbH 14 Sept 1973 [15 Sept 1972] 43214/73 Heading F1B An I.C. engine inlet manifold comprises a heated by-pass 5 branching from and rejoining the manifold further downstream and a choke plate 9 arranged in the manifold and by-passed by the heated by-pass, the choke plate being controllable in dependence on the amount of air-flow through the manifold. The by-pass flow is heated by exhaust gas flow through pipe 6. The pressure at Venturi throat 2 controls plate 9 via pneumatic servomotor 10, the Venturi wall 14 being adjustable to vary the base setting. Alternatively the movement of a carburetter piston 15 is measured by an inductive displacement transducer 16 whose output is amplified to a servomotor 18 which controls the choke plate 9. A common by-pass may be provided in systems having more than one manifold.
Patent GB-1105405-A (GB)
Title: Improvements relating to tubular wall linings of steam generators
IPC: F22B37/14
Filed: 1966-09-28
Abstract: 1,105,405. Tube linings. SULZER BROS. Ltd. 28 Sept., 1966 [5 Oct., 1965], No. 43374/66. Heading F4A and F4B. The walls of a combustion chamber of a steam generator are lined with two strips of parallel finned tubes (shown with solid and with dashed arrows in this developed figure). Each strip winds round and round the combustion chamber, running horizontally in the front and rear walls 2, 3, and being inclined to the horizontal in the side walls 4, 5. The first strip (solid arrows) then lines the top part of the right hand side wall 8 of a succeeding horizontal convection pass, then the right top part of the rear wall 10 of the pass, the right hand side of the roof 11 of the pass, and the right hand side of the roof 7 of the combustion chamber. The second strip (dashed arrows) lines the bottom part of the right hand side wall 8 of the convection pass, the bottom part of the rear wall 10, the bottom part of the left hand side wall 9 of the pass, then doubling back on itself over the line CD, the top part of the left hand side wall 9, the left top part of the rear wall 10, the left hand side of the roof 11 of the convection pass and the left hand side of the roof 7 of the combustion chamber. Both strips then discharge to header 25 or to one or more headers located to the side of the roof portions of the combustion chambers (Figs. 7, 8). The flat bottom 6 of the combustion chamber is also lined with finned tubes, alternate tubes extending from inlet header 15 to the bottom of wall 4 to form the tubes of the first strip, and from inlet header 16 to the bottom of wall 5 to form the tubes of the second strip. A tubular division wall 28 in the combustion chamber may also be provided.
Patent GB-1014500-A (GB)
Title: Purifying semi-conductor materials
IPC: H01L21/00
Filed: 1962-11-16
Abstract: 1,014,500. Semi-conductor devices. INTERNATIONAL BUSINESS MACHINES CORPORATION. Nov. 16, 1962 [Dec. 13, 1961], No. 43376/62. Heading H1K. Impurities are removed from semi-conductor material by heating in an atmosphere of hydrogen so that the impurity is progressively removed by out-diffusion. In the apparatus shown a wafer 2 of semi-conductor material, containing an impurity, is sealed in a quartz tube 1 with a hydrogen atmosphere at 360 mm. pressure and heated by an electric coil 5 to a temperature of 850 C. for 72 hours. The lower end of the quartz tube is kept at 75 K. by a Dewar flask 3 containing liquid nitrogen, and this causes the impurity to condense out at the bottom of the tube. The process may be applied to the production of a P-N junction in a body which initially contains both P-type and N-type impurities, one of which diffuses more rapidly than the other.
Patent GB-965512-A (GB)
Title: Substituted ureas and thioureas
IPC: C07C335/04
Filed: 1962-11-16
Abstract: The invention comprises substituted ureas and thioureas of the formula: <FORM:0965512/C1/1> wherein R1 represents a C1-4 alkyl radical, a phenyl radical, a halogen-substituted phenyl radical or an -NR5R6 radical, in which R5 and R6 independently represent phenyl or benzyl, or together with the nitrogen atom connected to these radicals represent a piperidine, pyrrolidine, piperazine, morpholine or thiomorpholine radical, R2 represents a C1-4 alkyl radical, a phenyl radical, a halogen-substituted phenyl radical, a nitro-substituted phenyl radical, an alkoxy-substituted phenyl radical or an alkylmercapto-substituted phenyl radical, the alkoxy and alkylmercapto radicals containing up to 4 carbon atoms, R3 and R4 independently represent hydrogen, alkyl, phenyl or benzyl, or together with the nitrogen atom connected to these radicals represent a piperidine, pyrrolidine, piperazine, morpholine or thiomorpholine radical, and X represents oxygen or sulphur. The above compounds are prepared by reacting a sulphenamide or diamino-monosulphide of the formula: <FORM:0965512/C1/2> with an equi-molar amount of an isocyanate or isothiocyanate of the formula R2.NCX.ALSO:A pesticidal composition comprises a substituted urea or thiourea of the formula <FORM:0965512/A5-A6/1> wherein R1 represents a C1-4 alkyl radical, a phenyl radical, a halogen-substituted phenyl radical or an -NR5R6 radical, in which R5 and R6 independently represent phenyl or benzyl, or together with the nitrogen atom connected to these radicals represent a piperidine, pyrrolidine, piperazine, morpholine, or thiomorpholine radical, R2 represents a C1-4 alkyl radical, a phenyl radical, a halogen-substituted phenyl radical, a nitro-substituted phenyl radical, an alkoxy-substituted phenyl radical or an alkylmercapto-substituted phenyl radical, the alkoxy and alkylmercapto radicals containing up to 4 carbon atoms, R3 and R4 independently represent hydrogen, alkyl, phenyl or benzyl, or together with the nitrogen atom connected to these radicals represent a piperidine, pyrrolidine, piperazine, morpholine or thiomorpholine radical, and X represents oxygen or sulphur, in admixture with a solid or liquid diluent or carrier. Specified forms are dusts and emulsions.
Patent GB-947366-A (GB)
Title: Potentiometer housing and method of constructing same
IPC: H01C10/24
Filed: 1961-12-05
Abstract: 947,366. Moulding electrical components- BECKMAN INSTRUMENTS Inc. Dec. 5, 1961 [Dec. 5, 1960], No. 43464/61. Heading B5A. [Also in Division H1] In a method of producing a potentiometer housing which comprises a hollow cylinder having an internal helical groove for accommodating a helical resistance element, a mould is formed between a hollow outer member 11 and a central core 12 shaped as shown (Fig. 1), the arrangement being that after the mould is set keys 17 are extracted and core 12 is removed by rotating it until threaded portions 13 occupy the recesses 27 (Fig. 2) left by the keys and then withdrawing it longitudinally. The outer member 11 is preferably removed before the core assembly is extracted and mounting shoulders 28 (Fig. 2) for the potentiometer and caps are formed during the moulding process. Either compression or transfer moulding may be used and one example of a suitable moulding material is given as glass filled diallyl phthalate resin.
Patent GB-883778-A (GB)
Title: Improvements in or relating to anodes
Inventor: BERGH SVERRE ERIKSSON
IPC: C25C7/02
Filed: 1959-12-22
Abstract: 883,778. Fused-electrolyte cells. DU PONT DE NEMOURS & CO., E.I. Dec. 22, 1959, No. 43537/59. Class 41. A rectangular anode assembly for use in a fused salt electrolytic cell comprises a plurality of elongated graphite pieces 3, means, e.g. a tie-rod or rods 5 and springs 8, for holding the bases of the pieces 3 together under stress, and means, e.g. bolts 9, for anchoring the pieces 3 to the bottom of the cell with the pieces 3 extending vertically therefrom. The rod or rods 5 pass through eyes or hooks on the bolts 9 which are enclosed by weirs 11 separating them from a fusible metal 10, e.g. Wood's metal, in the bottom of the cell, the pieces 3 resting on projections 4 on the bottom. The parts 9, 11 are accommodated in recesses in the pieces 3. A refractory cement 15 seals the Wood's metal 10, and a surrounding steel cathode 16 and a wire gauze diaphragm 18 are provided. Various modifications are mentioned. Springs 8 may be provided at each end of the rods 5 or the rods 5 may be dispensed with, adjustable resilient devices being interposed between the base of the end-pieces 3 and a wall 2 of the cell, the adjacent pieces 3 being interlocked by dowels. The bolts 9 may be replaced by pins or projections on the cell walls engaging slots or holes in the pieces 3 may have wells with co-operating slots to promote circulation of the electrolyte. A plurality of anode assemblies may be located side by side in a cell, with intervening cathodes.
Patent GB-1390545-A (GB)
Title: Laminated panels
IPC: B32B15/00
Filed: 1972-09-20
Abstract: 1390545 Magnetic laminates SWISS ALUMINIUM Ltd 20 Sept 1972 [22 Sept 1971 15 Sept 1972] 43613/72 Heading B5N [Also in Divisions B6 and G5] A laminated panel for use as a display or writing board comprises a polyolefin core layer 11 adhesively bonded to a magnetic or magnetizable layer 13 (which may be of ferrous metal, permanently magnetic material, or plastics material having permanently magnetic material embedded therein) which has recesses 14 for the insertion of magnetic or magnetizable riders 16 for carrying information. A further layer 12, of magnetic or magnetizable material may be provided. The layer 13 may be coated with a polyvinyl chloride foil 13a of thickness not exceeding 200 Ám., whereby the panel may be written on and cleaned without impairing the magnetic effect. The polyolefin core 11 may be of polyethylene, polypropylene or polybutylene, and may be bonded to the covering layers by heat and pressure using a plastics sheet, foil or dispersion as the adhesive. The recesses 14 may be produced before or after lamination. The panel may be produced from a continuously-manufactured laminate.
Patent GB-1276565-A (GB)
Title: Terminal box for telephone subsets
IPC: G10K1/26
Filed: 1969-09-04
Abstract: 1276565 Junction boxes INTERNATIONAL STANDARD ELECTRIC CORP 4 Sept 1969 [11 Sept 1968] 43788/69 Heading H2E A terminal box for telephone subsets has terminals 4 which are snapped into position in a one-piece, moulded plastics base 1, and a similarly moulded cover 2 which also snaps into place to cover the terminals and base. Each terminal 4 has a plane rectangular portion, threaded to receive a connecting screw 7, and a blade to receive a corresponding socket of a connector. The terminals are insulated from one another by transverse chamber braces 9 in the base, and are inserted from the blade side so as to lie upon longitudinal supporting ribs but underneath the hooked top of a longitudinal strip 3. Upon pressing the terminal blades towards the base 1, bevelled, resilient hooks 5 are deflected and then snap back to releasably attach the terminals to the base. The cover 2 is releasably attached to the base 1 by a pair of outwardly facing hooks (6, Fig. 3, not shown), upstanding from and integral with the middle chamber brace 9, and corresponding inwardly facing hooks (10) on the cover 2. The hooks 10 preferably form part of a conical depression around a hole in the centre of the cover and the hole may be sealed by a disc 8 which prevents the hooks (6) from being released. In an alternative embodiment (Figs. 4-6, not shown), the base 1 and cover 2 are moulded in one piece so as to be connected along one side by a hinge (11) of thin sheet or film, and a modified latch for the cover is displaced toward the opposite side. The terminals 4 are retained by individual hooks (3a), and the screws 7 pass through the unthreaded terminals to engage nuts (12) in recesses (13) in the base, allowing a wire for connection to be clamped between a corresponding nut and terminal.
Patent GB-1121442-A (GB)
Title: Improvements relating to clamping devices
Inventor: FISHER WILLIAM JOHN
IPC: E04B2/82
Filed: 1965-10-15
Abstract: 1,121,442. Clamps; partitions. W. J. FISHER. 14 Oct., 1966 [15 Oct., 1965], No. 43847/65. Headings E1W and E2B. A clamping device comprises a holder element adapted to be fixed to a partition element, the holder element including an open channel 2, a clamping element 4 disposed within the open channel and movable inwards into a retracted position and outwards of the holder element, spring means (not shown) between the clamping element and the holder element to urge the clamping element in the outward direction and means for moving the clamping element into the re tracted position in the channel against the action of the spring means and for holding the clamping element in the retracted position until released. In the construction shown the holder element is an H shaped member providing not only the open channel 2 but an additional open channel 3 facing in the opposite direction; the channel 3 is intended to be fitted over the top end portion of the partition element. The clamping element is of inverted U section and the means shown for retracting the clamping element is a cam 9 fixed in the lower channel 3 so that it can be pivoted between opposite walls of the channel 3. The cam includes a roller (not shown) mounted at the end of an arm the roller bearing on the bottom of a U shaped member 7 which is connected to the clamping element, the member 7 having four legs 8 which pass through grooves in the cross member 5 of the holder element to be fixed to the clamping element. The spring means is either a block or bar of foam rubber or a coil or leaf spring. In a modification the cam and member 7 are replaced by an arm pivoted near one end to a bracket connected to the cross member 5 of the holder element in a slot, the free end portion of the arm being connected by a link 13 with an anchor plate which is bolted to the clamping element, the arrangement being such that rotation of the arm retracts the clamping element, the pivot between the arm and the link passing over a dead centre to hold the clamping element in the inoperative position. A removable tool is used to pivot the cam in the first construction and the arm in the second construction.
Patent GB-1465566-A (GB)
Title: Tape embossing tool
IPC: B41J3/39
Filed: 1974-10-11
Abstract: 1465566 Selective embossing MINNESOTA MINING & MFG CO 11 Oct 1974 [12 Oct 1973 (2)] 44198/74 Heading B6F A hand-held tape embossing tool includes an embossing disc assembly 13, 14 having two concentric sets of embossing dies, the disc assembly being displaceable perpendicular to the path of tape fed through the tool. The two sets of dies may be manually selectable by sliding the disc assembly as if for case shift (Figs. 10-12, not shown). However as shown alternate characters indicated on the manually rotatable disc require automatic disc displacement. This is effected by a bell crank lever 42 actuated by the impression handle 25, and coupled to a link 46 having a lug 76 which engages a tooth 75 on the disc support when an inner die is selected, but missesthe teeth 75 when an outer die is selected. The lug 76 or a complementary lug 77 act as aligning members.
Patent GB-961763-A (GB)
Title: Thermo-chemical joining of nylon yarns
IPC: B29C65/48
Filed: 1962-11-23
Abstract: 961,763. Piecing-up yarns. MONSANTO CHEMICAL CO. Nov. 23, 1962 [Dec. 22, 1961], No. 44429/62. Heading D1W. Contiguous monofilament, multifilament, or staple nylon yarns in parallel relationship e.g. overlapping ends, are joined together by coating or impregnating the yarns with a multi-hydroxybenzene bonding agent and then heating the yarns by conduction, convection or radiation, optionally with applied pressure and/or positive cooling, to effect thermo-chemical union thereof. The agent may be resorcinol, hydroquinone, pyrocatechol, pyrogallol, applied e.g. by spraying, brushing, padding, or dipping the yarns individually or collectively, as a melt or a solution in water, alcohols such as methonol or ethanol, or ethers such as dimethyl or diethyl ether. As shown in Fig. 1, yarns 10 and 11 receive an application of binding solution 14 from a wick 16, they are then held, Fig. 2, on an electrically heated surface 23 of a slot 20 until the solvent has evaporated, and are cooled without disturbing the area of juncture 18. Surplus ends at 12 and 13 may be severed.