baber/WOPTO huggingface dataset:
Patent GB-1084327-A (GB)
IPC: B24B13/01
Abstract: 1,084,327. Grinding; moulds; casting composite lens-lapping tools. J. & S. WYLDE Ltd. Aug. 19, 1966 [July 19, 1965], No. 30625/65. Headings B3D and B3F. A method of dealing with rapid wear on lenslapping tools comprises casting a lens smoothing or lapping tool (Figs. 1 and 2) from an easilymelted metal using an accurately-formed master 20, as part of the mould to produce an accurate lapping surface on the tool, and grinding or smoothing one or more lens blanks with the easily-melted tool thus produced until the wear on its lapping surface is beyond an acceptable amount, whereupon the tool is melted down and re-cast as before. The tool may be formed with a convex or concave surface and a stem by which it is held in a tool holder. The metal, which may comprise the whole of the tool or a fairly thick liner on a base part of steel, has a melting temperature between 250‹ and 900‹ F., a Brinell Hardness number in the range 115- 140, and, preferably, is a zinc-based alloy. The tool may be cast in a mould having a base (20, Fig. 3) of cast-iron or steel formed with an accurate master surface, the base, which may be a normal cast iron lapping tool, being located in the bottom of a split cylinder (22) around which are coils (26) for cooling water. A ledge (24) in the cylinder forms the stem of the tool. The metal is melted by electric or other heating means in a casting machine, and means are provided for transferring the melted material to the mould.
Patent GB-1092077-A (GB)
Abstract: 1,092,077. Inductance. PHYSICAL SCIENCES CORPORATION. Aug. 11, 1966 [Oct. 8, 1965], No. 36050/66. Heading H1T. [Also in Division G1] Linear response of a vibrometer or other transducer is ensured even when magnetic core 114 nears the ends of coils 110, 112 by winding them on a tapered bobbin 102, so obtaining the additional turns at the ends required for linearity without an increase in overall diameter. The smaller distance between the coils and the core at the outer ends produces an additional effect, and tends to compensate for the losses in the coils there. Magnetic core 114 is supported by springs 126 and 128, and its rest position may be adjusted by screw-threads on members 130 and 132. Forces on the transducer due to vibration are reflected by changes in the position of the core.
Patent GB-1095383-A (GB)
IPC: H01J41/20
Abstract: 1,095,383. Ion pumps. VARIAN ASSOCIATES. Feb. 4, 1966 [Feb. 19, 1965], No. 5068/66. Heading H1D. An elongated heat-conductive tubular member 31 for circulating a fluid to cool the cathode plates 21 of an ion pump is arranged in serpentine fashion across the backs of the plates instead of around the edges of the plates facing the cellular anode 18 as in Specification 958,423. As shown the tube 31 is in line with walls of the anode cells. In an alternative arrangement (Fig. 3, not shown) the tube intersects the longitudinal axes of the cells. The anode 18 may be of stainless steel and is supported from the metal wall of the envelope 25 by insulators 23 and brackets 26. The cathode plates 21 may be of titanium, the tube 31 which may also be of titanium being secured by clips 33 brazed to the plates 21 with aluminium. A permanent magnet 28 provides a magnetic field.
Patent GB-1143877-A (GB)
IPC: C08K3/22
Abstract: 1,143,877. Stabilizing vinylidene chloride polymers. IMPERIAL CHEMICAL INDUSTRIES Ltd. 7 Feb., 1968 [28 Feb., 1967], No. 9499/67. Heading C3P. Polymers of vinylidene chloride are stabilized with an alkaline earth metal oxide, particularly magnesium oxide, and a metal salt of an organic polycarboxylic acid. The polymer may be a homopolymer or a copolymer, e.g. with vinyl chloride. The salt may have metal combined with one or all the carboxylic acid groups, examples being ferrous oxalate and potassium hydrogen phthalate.
Patent GB-1225271-A (GB)
IPC: E05F3/04
Filed: 1968-02-01
Abstract: 1,225,271. Door closing mechanism; shaft construction. DOR-O-MATIC (G.B.) Ltd. 31 Jan., 1969 [1 Feb., 1968], No. 5202/68. Heading E2M. [Also in Division F2] An end portion 16 of a shaft 12, projecting from a door closing mechanism of the kind having means for controlling the closing and latching rates of the door, and being sunk in the floor or door frame, is provided with at least one pair of opposed flats whereby a lever arm, for connection to the door and having an aperture of complementary shape for receiving the end portion 16, can be non- rotatably mounted on the shaft 12, the end portion 16 being slotted and having a screw 22 inserted in an axially extending screwthreaded hole to spread the outer extremity of the shaft sufficient to secure the lever arm. The end portion 16 and the aperture in the lever arm are preferably of substantially square cross-section, as shown, and the end portion 16 is preferably slotted by a pair of diagonal slots 18 so that the end portion 16 is constituted by a cluster of four deformable triangular members 20. At the axis of the shaft 12 is a screwthreaded countersunk hole into which is inserted a countersunk head screw 22 whcih spreads the members 20 very slightly to hold the lever arm firmly. In an alternative embodiment (Fig. 4, not shown) a grub screw acts against a steel ball resting in the bottom of the hole, the ball exerting a bursting force when the screw is tightened; or the screwthread in the hole may be tapered. The end 16 of the shaft may also be of polygonal cross-section.
Patent GB-1225779-A (GB)
IPC: H02G3/32
Filed: 1967-10-25
Abstract: 1,225,779. Cable guides. ULTRA ELECTRONICS Ltd. 24 Dec., 1968 [25 Oct., 1967], No. 48387/67. Heading H2C. A fixed guide for a flat strip cable 4 consists of a radiused former (5) (Fig. 2, not shown) over which the cable is arranged to be bent, and may be provided with means for mounting the guide on a chassis. The guide may include two U- shaped channels 3 and 6 to locate the cable. The guide may be constructed of a non-conductive material e.g. polymerized diallyl phthalate, or the surface of the guide may be made electrically conductive to screen the cable where it overlaps the corner. The cable 4 is bent through 90 degrees round former (5) and passed through channel 6 which is made sloping. In another embodiment (Fig. 5, not shown), the guide has a former with two sides radiused so that the cable is bent round the sides and the positions of the cable entering and leaving the former have the same relationship with the chassis.
Patent GB-1227172-A (GB)
IPC: C09B29/033
Filed: 1968-04-29
Abstract: 1,227,172. Benzoisothiazole derivatives. EASTMAN KODAK CO. 29 April, 1968 [24 May, 1967], No. 20203/68. Heading C2C. [Also in Divisions C4-C5) 2 - [2 - (N - ethyl - m - toluidino)ethyl] - 1,2- benzisothiazolin - 3 - one - 1,1 - dioxide is prepared by refluxing together N-2-chloroethyl-N- ethyl - m - toluidine with 1,2 - benzisothiazolin- 3 - one - 1,1 - dioxide. 2 - [2 - (N - ethylanilino)- ethyl] - 1,2 - benzisothiazolin - 3 - one - 1,1- dioxide and 2 - [2 - (o - chloranilino)ethyl]- 1,2- benzisothiazolin-3-one- 1,1-dioxide are similarly prepared. The compounds are used as coupling components in the preparation of azo dyes (see Divisions C4-C5).
Patent GB-1229796-A (GB)
IPC: H03M1/00
Filed: 1967-08-17
Abstract: 1,229,796. A/D converters. NATIONAL RESEARCH DEVELOPMENT CORP. 16 Aug., 1968 [17 Aug., 1967], No. 37961/67. Heading G4H. The input b is applied to an integrating amplifier 3 feeding a threshold circuit 4 having upper and lower threshold levels at which it changes state, the state of the circuit 4 is sampled and stored, 5-7 at regular intervals and after a predetermined delay is transferred by gates 8, 9 to a bi-stable circuit 12 controlling a current gate 13 to feed back positive and negative current pulses to integrator 3, the mean feedback current over a given period being equal to the input b, and counter 19 records the resultant of the positive and negative pulses. Instead of dividers 28, 29 preceding counter 19 to provide an output representing the number of negative pulses or the total number of pulses in the predetermined period minus the number of negative pulses, a gating arrangement may be used, Fig. 4 (not shown), to pass a positive or negative pulse to counter 19 only when two sucessive samples of bi-stable circuit 7 are the same.
Patent GB-1252741-A (GB)
IPC: C22B21/06
Filed: 1968-03-21
Abstract: 1,252,741. Purifying Al and alloys based thereon. ALLOYS & CHEMICALS CORP. March 5, 1969 [March 21, 1968], No.13643/68. Heading C7D. A melt of Al or an alloy based thereon is purified by passing therethrough not significantly more than sufficient Cl 2  or reactive Cl-containing vapour to remove the impurities which form stable chlorides, the melt being covered with a flux layer of sufficient fluidity and depth to absorb at least the major part of any AlCl 3  formed and containing as a major component at least one alkali metal, and/or alkaline earth metal, chloride and/or fluoride. The flux component may be Na and/or K chloride and/or fluoride or a double salt of alkali metal chloride or fluoride and aluminium chloride or fluoride. The reactive Cl-containing vapour may be a chlorinated hydrocarbon or AlCl 3  but the preferred gas is Cl 2  . The removal of Mg, H and Na impurities in a continuous or batchwise process is referred to. Examples refer to the treatment of an Al 11% Si alloy.
Patent GB-1257723-A (GB)
IPC: H01R33/22
Filed: 1969-06-10
Abstract: 1,257,723. Lamps. A. F. BULGIN & CO. Ltd. 5 June, 1970 [10 June, 1969], No. 29295/69. Heading F4R. [Also in Division H2] A lampholder has an end contact 5 and a side contact 2 held within the tubular casing 1. The terminals 7 and 6 of the side and end contacts extend through the slot 3 and recess 8 respectively. The end contact is insulated from the base of the side contact by means of the fibre washer 10. A resilient nylon sleeve 11 is fitted around one end of the side contact. The casing is made from a resilient material whereby a filter or transparent dome 12 may be pushed into or over the end of the casing.
Patent GB-1258514-A (GB)
IPC: B24B37/10
Filed: 1969-02-20
Abstract: 1,258,514. Grinding. INTERNATIONAL BUSINESS MACHINES CORP. 20 Feb., 1969 [22 March, 1968], No. 9128/69. Heading B3D. Apparatus for finishing a surface of a workpiece 12, Fig. 3, e.g. a silicon wafer, comprises a receiver 60 for maintaining the surface to be finished against a plane finishing surface 11, rotatable drive means for causing the receiver and workpiece cyclically to describe a closed path over the surface 11, and means for simultaneously causing additional relative rectilinear movement between the receiver and the surface 11. The drive means is displaceable along its axis of rotation and is connected to the receiver by a joint 62 which is adapted to communicate axial displacement while permitting the receiver to assume an angular position relative to the axis determined by the position adopted by a workpiece received thereby, as pressure is applied by displacement of the drive means towards the surface 11. As described, workpieces 12 are held in apertures 69 of a floating ring 68 by spring-loaded discs 66 adjustably mounted on a housing ring 61. The ring 61 is eccentrically mounted by the ball joint 62 on a rotatable mount 43 supported for rotational and limited axial movement within a carrier 40. The ring 61 is so supported by springs 73 secured to pads 72 fixed to the carrier 40 that as the mount 43 is rotated the workpieces are moved in closed paths relative to the carrier. Alternatively, the movement of the ring is controlled by a link which is fixed thereto and has a pin-and-slot connection with a fixed part of the carrier. The weight of the mount 43 urges the workpieces against the surface 11 until a pin 48 engages the top edge 50A of a slot therein when the workpieces reach the desired size. A plurality of carriers 40, Fig. 1, is provided and each is moved rectilinearly along the surface 11 by rotation of a threaded rod 78, the carriers being guided by guides 77. The mounts 43 may be rotated by a double-V-belt 47, or each carrier 40 may include its own drive motor, the speed of which may be varied. A plurality of finishing surfaces may be provided which may be separated by cleaning surfaces. The finishing surfaces may be impregnated with diamond dust or an abrasive, lapping, or polishing slurry may be supplied thereto either by spraying or via openings 80 in the surface 11. The slurry may comprise water or oil together with silicon carbide, boron or nitride particles, or silicon oxide or cupric acid. The finishing surfaces may be parts of movable belts which may be shifted when a fresh finishing surface is required. When the finishing operation is completed, a flange 70 on the ring 68, Fig. 3, engages rails 91 which cause it to be raised so that the workpieces can be removed from the discs 66 by a knife.
Patent GB-1264285-A (GB)
IPC: F16C39/06
Filed: 1970-08-28
Abstract: 1,264,285. Gyroscopes. BODENSEEWERK GERATETECHNIK G. m. b. H. Aug. 28, 1970 [Sept. 12, 1969], No.41589/70. Heading G1C. In a gyroscope having a magnetic support 14, 16 which provides horizontal restraining forces on a gyro rotor 12 rotating about a substantially vertical axis, the horizontal restraining forces are provided between opposed magnetic polefaces e.g. 26, 30 on the rotor and on a stationary bearing member and at least one of the magnetic polefaces is provided with a high conductivity current path so that eddy currents can be induced in the path upon relative movement between the polefaces to provide a damped restraint of the gyro. As shown, the rotor 12 is supported by a shaft having magnetized ends 20, 22 defining polefaces 24, 26 which are located adjacent magnets fixed to a housing 10, the magnets having polefaces 28, 30 and being surrounded by electric windings 32, 34. At least the poleface 30 supports a member of current conductive material and the member may be in the form of disc or a ring having radially inwardly projecting conductive portions interconnected at the centre of the ring. Hydraulic support of the rotor shaft may be provided by a liquid film supplied by a conduit 38 to the poleface 30. In use, any departure from vertical of the spin axis of the rotor 12 causes eddy currents whose effect is such as to return the axis to vertical. The magnetic characteristics may be adjustable to avoid undesirable effects occurring during running up or braking down of the gyro rotor.
Patent GB-1296749-A (GB)
IPC: F04B43/12
Filed: 1970-06-23
Abstract: 1296749 Peristaltic pump SCIENTIFIC INDUSTRIES Inc 23 June 1970 30484/70 Heading F1F In a peristaltic pump comprising a flexible tube 30 acted upon by low friction rollers 24 (of e. g. PTFE) mounted upon a disc 18 rotated by a motor, a strip 50 of flexible material, e.g. PTFE, having a low coefficient of friction is interposed between the rollers 24 and the tube 30 to reduce wear on the latter. The strip 50 is fixed at its ends to brackets 52, 54, or alternatively the downstream end of the strip may be free. More than one tube may be acted upon by the same set of rollers 24.
Patent GB-1296907-A (GB)
IPC: C10M169/00
Filed: 1970-06-08
Abstract: 1296907 Lubricants BRITISH PETROLEUM CO Ltd 10 May 1971 [8 June 1970] 27593/70 Heading C5F An antioxidant composition for lubricants comprises 5-70 p.b.w. of 9,10-dihydroanthracene and 2-30 p.b.w. of a peroxide decomposing antioxidant (e.g. dialkyl or diaryl sulphides or disulphides, zinc dialkyl dithiophosphates and dialkyl thiodicarboxylates such as dilauryl thiodiproprionate). The lubricant may be a mineral or synthetic oil, e.g. a complex ester prepared from caprylic acid, 1,1,1,-trimethylol propane and sebacic acid.
Patent GB-1302854-A (GB)
IPC: B60J1/17
Filed: 1969-01-17
Abstract: 1302854 Vehicle windows WILMOT-BREEDEN Ltd 14 April 1970 [17 Jan 1969] 2969/ 69 Heading E1J In a vehicle door of the type where no window frame extends above sill level and two guide tracks for a vertically sliding window pane 3 are mounted inside the door, one of the spaced elongated channel-section tracks 6 is inset inwardly of the corresponding window side edge 8 (see Fig. 1) and displaced out of the plane of the window (see Fig. 2), and the other track 5 is disposed alongside the other edge 7 and in the plane of the window, guide blocks 9, 10 being attached to the lower edge of the window and slidably engaging in the guide track channels 5, 6. The guide blocks 9, 10 are dumb-bell shaped with a lower bulbous portion (9a), 10a which closely fits the track channel 5, 6 and an upper narrower bulbous portion (9b), 10b which closely fits only a narrower top portion (5a), 6a of the channel 5, 6, thereby to hold the window firmly in its closed position. The shape of the channel where it merges with the narrower top portion (see ramp 14 in Fig. 2) causes the window to tilt slightly inwardly at the end of the closing movement against a peripheral seal. Sealing strips may be fitted along the door sill on each side of the window.
Patent GB-1304176-A (GB)
IPC: A47G1/06
Filed: 1969-04-22
Abstract: 1304176 Picture mounts O P HOLLANDER 21 April 1970 [22 April 1969] 20584/69 Heading A4X [Also in Division B6] A picture mount comprises a picture 1 glued to a card 2 which is secured to a canvas 3 larger than the picture and folded over members 9 to which the canvas is secured by pins 17.
Patent GB-1304462-A (GB)
IPC: G07F17/38
Filed: 1970-09-15
Abstract: 1304462 Coin freed amusement machines BAR FOOTBALL Ltd 1 Sept 1971 [15 Sept 1970] 43905/70 Heading G4V [Also in Division A6] An amusement machine comprises a reservoir 6, 7 housing a plurality of balls, means for delivering balls, one at a time, from the reservoir into play, coin-freed release means for controlling passage of balls to the delivery means, and yieldable resilient spring means 21 located in the path of balls being advanced through said reservoir toward a point of delivery into play and functioning as non- return control means for the balls. In the embodiment described the machine comprises a football table (Fig. 1, not shown) with a playing surface (2), dummy figures mounted on rotatable and slidable transverse rods (4) and a glass cover (3). At the start of a game balls that have entered the goals during the previous game are held in tubes 10, 11 by wire loop stops 29, and the upright limb 7 of an L-shaped tube opening on to the playing surface 2 is also full of balls. On the insertion of coinage rod 24 is freed for sliding movement, withdrawing stops 29 from the tubes 10, 11 and allowing the balls held therein to pass into a tube 13 that communicates with the horizontal limb 6 of the L-shaped tube. A pusher 14 is operable by a lever 22 external of the machine to push a ball, received in the limb 6 from the tube 13, past a resilient ring 21 (see also Fig. 4, not shown) and hence deliver a ball on to the playing surface from the end of the limb 7. When the rod 24 is operated to withdraw the stops 29 from the tubes 10, 11 the free ends of the wire enters the tubes at apertures 30 to hold up balls received through the goal openings of the playing surface until the next play of the machine.
Patent GB-1306742-A (GB)
Title: Manufacture of high voltage insulated electric conductors
IPC: B29C48/06
Filed: 1970-01-16
Abstract: 1306742 Coated conductors BRITISH INSULATED CALLENDER'S CABLES Ltd 14 Jan 1971 [16 Jan 1970] 2290/70 Heading B2E [Also in Division H1] A method of manufacturing a high voltage insulated electric conductor comprises applying to a conductor an insulation of an ethylene polymer at least 2.5 mm. thick and crosslinking the insulation by subjecting it with high energy radiation, preferably electrons, to cause it to absorb a dose D Mrad in the range 20 to 60 or 25 to 55 Mrad at an average rate R Mrad/sec. The irradiation conditions are represented by a point on Fig. 1 below the curve C'B'DD' which approximately defines the boundary between sucessful (below the curve) and unsuccessful (above the curve) tests on samples of irradiated cables, or possibly by a point only in the region represented by the expansion R # e<SP>0.046(D-10)</SP> which is bounded at its lower limit by line BB'. The dose D can be given in a single exposure to radiation of either uniform or non-uniform intensity or can be built up from a number of exposures. Fig. 2 (not shown) illustrates apparatus suitable for carrying out the process of the invention in which the insulated conductor (1) is passed by guide (2) through the irradiation zones of three electron accelerators (3), set at angles of 120 to one another around the cable, and then, if necessary, passed through the irradiation zones again by using guides (4), the cable possibly being passed directly to a test station (5) after completion of irradiation. Other types of accelerator such as the linear filament or coaxial types could be used when they become commercially viable for the energies required (e.g. 0.8 to 6 Me.v.).
Patent GB-1308213-A (GB)
Title: Purification of organic compounds
IPC: C07C37/86
Filed: 1970-09-08
Abstract: 1308213 Purification of organic compounds BERK Ltd 17 Aug 1971 [8 Sept 1970] 42999/70 Heading C2C Metallic impurities are removed from solid organic compounds by treating the impure compound with a mixture of an organic solvent for the organic compound and an inorganic acid capable of dissolving the metallic impurities, and water and subsequently recovering the purified organic compound. In the preferred process the mixture is heated with agitation to ensure maximum purification. The mixture may contain in addition a cationic or non-ionic surface active agent. Organic solvents are defined as those in which the organic compound is at least partially soluble. Preferred solvents form azeotropic mixtures with water and are removed from the mixture after treatment by azeotropic distillation, specified are toluene, benzene, xylene, chlorobenzene and dibromoethane. Specified compounds which may be purified are tri- and pentabromotoluene, tetra- and hexabromobenzene, tri-, penta- and hexabromophenol, tri- and pentabromophenylallyl ether and decabromodiphenyl. Specified metallic impurities are Fe, Al, and their halides and specified surface active agents are cetyltrimethylammonium bromide and nonyl phenol ethylene oxide condensate.
Patent GB-1311415-A (GB)
Title: Mixing device
IPC: B01F29/60
Filed: 1971-10-02
Abstract: 1311415 Concrete mixers K MORAN and DAM ELSTON 2 Oct 1971 45964/71 Heading B1C A manually operated concrete mixer has a rotatable mixing drum 1 with an external ground-contacting bearing surface 2, a mounting arrangement 5 having wheels 6, a handle 3, and integrally formed internal ribs 9. It may be made in two halves the abutting flanges of which may be covered by a rubber tire to form the bearing surface 2. There is a lifting handle 7 to enable the drum to be discharged by tilting.
Patent GB-1314214-A (GB)
Title: Method of sealing hollow prefabricated concrete members eg  concrete vessels concrete pipes and the like
IPC: F16L55/164
Filed: 1970-06-23
Abstract: 1314214 Sealing concrete tanks DIDIERWERKE AG 23 June 1970 30416/70 Heading E1T [Also in Division F2] In sealing hollow concrete structures e.g. pipes, reservoirs, swimming pools &c the structure is filled with water which contains or to which is added a synthetic resin dispersion or solution and left for a sufficient length of time until the concrete is sealed with resin. The water filling preferably contains not more than 2 % by weight of dispersed resin and the concentration is adapted to the hardness of the water used. Any synthetic resin dispersion which is electrolyte-sensitive may be used but preferred are those containing salt-forming groups either in the form of acid groups or in the form of a salt, more particularly ammonium salts.