baber/WOPTO huggingface dataset:
Patent GB-1227760-A (GB)
IPC: D06N3/00
Filed: 1967-11-18
Abstract: 1,227,760. Flexible laminates. DUNLOP CO. Ltd. 18 Nov., 1968 [18 Nov., 1967], No. 52546/67. Heading B5N. [Also in Division B2] A flexible laminate is made by subjecting both faces of a sheet of cellular material to a flame to achieve melting and adhering, simultaneously or consecutively, one molten face to a sheet of compressed cellular material and the other molten face to a sheet of fibrous or cellular material. The flame treated layer may have its cellular structure completely destroyed during melting and act as a hot melt adhesive or it may be sufficiently thick to form a perceptible layer in the laminated product. Suitable cellular materials are foams of natural and synthetic rubber, PVC, polyethylene, polypropylene, polystyrene and polyurethane. The compressed layer is preferably constructed of a reticulated polyurethane foam which is compressed prior to, during or after adhesion to a density of 0À3-1À1 g/c.c. The fibrous material may be a non-woven textile felt which includes crimped continuous fibres with or without staple fibres or a woven or knitted fabric. Other materials may be adhered to the exposed faces of the laminate by the use of a flame treated interlayer or by use of adhesives, solvent treatments or heat and pressure. In the examples (1) compressed reticulated polyurethane foam is bonded to a woven nylon fabric by a thin interlayer of reticulated polyurethane foam; (II) a compressed polyester polyurethane foam is bonded to a non-woven felt comprising a layer of polypropylene staple fibres and a layer of nylon filament; (III) the textile surface of laminate of Example (I) is bonded to the felt of Example (II). The laminate may be impregnated with a binder as disclosed in Specifications 1,083,087; 1,136,508; 1,176,161; or coated with a polymer as disclosed in Specifications 1,037,632; 1,220,951 and 1,226,053.
Patent GB-1229437-A (GB)
IPC: H01F27/33
Filed: 1968-07-24
Abstract: 1,229,437. Transformers; inductors. BROWN, BOVERI & CO. Ltd. 24 July, 1968 [10 June, 1968], No. 35380/68. Heading H1T. A core for a three-phase choke or transformer comprises two yokes 13, 14 spaced apart by three columns 10, 11, 12 whose axes are disposed at respective comers of a triangle, each column comprising several coaxial, spaced-apart, cylindrical sections 15, the laminations 41 (Fig. 4b) of which are arranged in radially-disposed packets. The yokes may be annular or of a generally triangular shape and may be wound from a continuous strip. The laminations of the yokes and of the column sections may be glued together with a self-hardening polyester or an epoxy resin. Bandages may also be glued around the column sections. An insulating layer of a synthetic fibrous material, e.g. transformer board, may be glued to the end faces of the column sections. The spacers 16 between the sections are preferably cylindrical, ring-shaped or ring- segment shaped blocks of a ceramic material or of a loaded casting resin. Each column section may be provided with an axial hole 42, which may contain a welded tube, corresponding holes being formed in the yokes either by spacing apart a pair of adjacent laminations or by drilling the yoke after it has been wound. Bolts extend through the holes in the yokes, being fastened on the outer side to clamping plates. Bracing bolts or ropes 74, Fig. 7 (not shown), extend along each column within the hole 42 and are fastened at their ends to the bolts passing through the yokes. The bracing bolts or ropes are made of a non-magnetic insulating material, e.g. a polyester resin strengthened with fibres. In an alternative bracing arrangement the columns are clamped between H-beams adjacent each yoke by tiebolts which pass externally of both the columns and the windings disposed thereon. In either arrangement the tension in the bracing members is maintained by stacks (77) of spring plates having non-linear elastic characteristics.
Patent GB-1234275-A (GB)
IPC: H04R7/18
Filed: 1968-05-13
Abstract: 1,234,275. Diaphragms; electromechanical transducers. TIBBETTS INDUSTRIES Inc. 13 May, 1968 [16 May, 1967], No. 22600/68. Heading H4J. An acoustic diaphragm 2 (Figs. 1, 2) for an electro-acoustic transducer 24 (Fig. 3) has a flexural pivot pin 6 connected near one edge of the diaphragm 2 and extending substantially perpendicular therefrom for pivotal support, the diaphragm 2 being thereby restricted to rotary movement about the pivot pin 6. A drive pin 7 connects the diaphragm 2, away from its centre of pressure, to a vibratable element 8. The element 8 may be the armature of a moving armature transducer. It extends substantially parallel to the diaphragm 2. The diaphragm 2 has a main " race-track " portion 9, a surround 10 and a self-frame 11. Flats 13, 14 are provided. The flat 13 has apertures 20, 20 for securing the pins 6 and 7. Connection of the element 8 away from the mid-point enables the diaphragm 2 to be of a size to use the available area advantageously. The diaphragm may be circular, elliptical, square or rectangular. The transducer may be a receiver or transmitter.
Patent GB-1237956-A (GB)
IPC: E01C19/28
Filed: 1968-11-20
Abstract: 1,237,956. Road rollers. STOTHERT & PITT Ltd. 19 Feb., 1970 [20 Nov., 1968], No. 55063/68. Heading B7H. A self-propelled vibratory roller comprises a single roll made up of two sections 1, 2, a support structure 15 mounted for pivotal movement about the axis of the roll, an engine 23 for driving the roll, an engine 33 for applying vibratory motion to the roll, and torque reaction wheels 37 arranged on each side of the roll axis to limit angular movement of the support structure 15. Each torque reaction wheel 37 is connected to the support structure 15 so as to be vertically adjustable by means of an hydraulic ram 38 or a screw jack. The torque reaction wheels 37 can be turned into a position parallel to the roll axis so that the roller can be towed through hitching means at the other end of the support structure 15. The engine 23 drives a shaft 24 connected through independently operable clutches 24 and chain drives 20 to pinions (Fig. 2, not shown) meshing with gear rings attached to the roll sections 1, 2 by rubber mountings. Unbalanced vibrator shafts in the roll sections 1, 2 are coupled together and driven from the engine 33 through a belt drive 35.
Patent GB-1239233-A (GB)
IPC: G11B15/62
Filed: 1968-10-23
Abstract: 1,239,233. Tape recorders. ENGLISH NUMBERING MACHINES Ltd. 30 Sept., 1969 [23 Oct., 1968], No. 50339/68. Heading G5R. Magnetic tape is pressed against a head 30 by a pressure member comprising a ring of resilient material 23 on a first cylinder 32 rotatably mounted on a second cylinder 25 having a non- circular bore complementary to a non-circular shaft 21. The bore 26 is oversize to accommodate shims 29 to adjust the ring parallel and perpendicular to the direction of tape movement. The pressure member is shown mounted in a reel-to-reel cassette but may be mounted on an open-reel type machine so as to be retractable to facilitate tape threading. The ring may be rotated by passage of the tape or driven separately to reduce wear.
Patent GB-1250210-A (GB)
IPC: B60C9/00
Filed: 1968-12-30
Abstract: 1,250,210. Pneumatic tyres. B. F. GOODRICH CO. 30 Dec., 1968 [26 Dec., 1967], No. 61719/68. Heading B7C. A pneumatic tyre 10 having carcase plies 13, 14 the cords 18 of which are capable of a limited and pre-determined amount of extension is constructed by applying the carcase plies 13, 14 to a building drum with the unstretched cords of each disposed at an equal but opposite acute angle to the circumferential line, applying axially spaced bead cores 15, 16 turning the ends of the plies thereover, expanding the carcase to a partially toroidal configuration such that the cords are not fully extended and vulcanizing the carcase, whereby when the finished tyre is inflated, it can expand to a diameter 15-40% greater than the diameter of the vulcanized carcass by further stretching of the cords 18 to their fullest extent. The cords 18 comprise prevulcanized elastomer core with a substantially inextensible textile yarn 19 wrapped helically therearound. In a modification the elastomer core consists of three filaments twisted together.
Patent GB-1250984-A (GB)
IPC: B01J19/18
Filed: 1969-07-29
Abstract: 1,250,984. Mixing apparatus; polymerisation apparatus. CHEMISCHE WERKE BUNA VEB. 29 July, 1969, No. 38116/69. Headings B1C and B1X. [Also in Division F4] Mixing apparatus suitable for use in polymerisation processes comprises a vessel 5 provided with a jacket 6 and an agitator comprising a rotatable shaft 10 having hollow discs 11 arranged along its longitudinal axis through which a heat transfer medium can be circulated and provided with rotatable arms 14 between adjacent discs carying pivoted wiper plates 15. The shaft may extend through the bottom of the vessel, Fig. 2 (not shown), and baffles may be located within the hollow discs to assist heat transfer, Fig. 4 (not shown).
Patent GB-1265943-A (GB)
IPC: H01H1/66
Filed: 1970-03-05
Abstract: 1,265,943. Mounting reed contact unit. INTERNATIONAL STANDARD ELECTRIC CORP. 5 March, 1970 [11 March, 1969], No. 10627/70. Heading H1N. A sealed magnetic reed contact unit 2 is mounted in a plastics member 1 by its envelope 2 being retained in a recess which originally had two fingers 6 extending toward each other and arranged so that the envelope is held against the side of the recess at which the finger is cut off at 7. With two contact units which may be operated by a movable magnet, not shown, the envelopes 2 may be as near as possible to each other, as shown or on the opposite sides of the recesses to be as far apart as possible (Fig. 3, not shown) or both to the right or left of the recesses.
Patent GB-1288478-A (GB)
IPC: B22D31/00
Filed: 1970-07-02
Abstract: 1288478 Milling machine details UNIVERSAL MASCHINENUND APPARATEBAU GmbH & CO AG 2 July 1970 [2 July 1969] 32111/70 Headings B3B and B3K A machine for milling off surplus material from castings comprises a cutter 4, Fig. 1, mounted on an arm 3, pivoted to a. carriage 2 movable in the plane of the paper, and a work-table 5 movable in a direction into the paper, the worktable and arm being supported during the cutting operation. Table 5, Fig. 2, is adapted to be clamped in the required position on base 1 by an hydraulic clamp 8, and a carriage 10 for the arm 3 is adapted to be clamped by hydraulic rams 12 carried by the carriage and engaging. guide rods 11. In a modification,. cutter 20, Fig. 3, is carried on an arm 19 pivoted to a carriage 18 movable along guide rods 17. Cutter 20 is driven by a motor 23 via V-velts 24, and the arm is pivoted by an hydraulic cylinder 25, and may be oscillated by an hydraulic piston 27, Fig. 5. Two work carriages 31, Fig. 4, are movable along guide rails 30 and support tables 33 which swivel about vertical axes 32 and can be locked, cradles 35 being pivoted on the tables about horizontal axes 34, Fig. 3, the cradles supporting ball mounted vice jaws 36. Each carriage 31 has its own built-in drive.
Patent GB-1290576-A (GB)
IPC: C07C401/00
Filed: 1970-02-24
Abstract: 1290576 Crystallization of Vitamin D 3  F HOFFMANN-LA ROCHE & CO AG 24 Feb 1970 [25 Feb 1969] 8797/70 Heading C2V In a process for crystallizing Vitamin D 3  the solvent used is methyl formate. The starting material may be Vitamin D 3  resin obtained from 7-dehydrocholesterol by irradiation, esterification and saponification. Examples are given.
Patent GB-1297096-A (GB)
IPC: B22D11/06
Filed: 1971-04-19
Abstract: 1297096 Continuous casting PROLIZENZ AG 19 April 1971 [26 Feb 1970] 20276/71 Heading B3F [Also in Division F2] In a machine having two endless, driven sets of articulated mould blocks, which sets cooperate to form between them a mould cavity inclined at an angle between 0 and 45 degrees to the horizontal for the casting of metal strip, e.g. of Al or Al alloy, at least the lower set 11 is provided with a brake (see Division F2) at the downstream end of the cavity to prevent gaps opening between the blocks in the set. The braking may be provided by a pinion 27 (meshing with toothed segments 18 of the blocks by which segments the blocks are driven) may be mounted on a fixed shaft between two conical friction rings adjustably spring-loaded towards each other on the shaft. Alternatively, a similar pinion may also mesh with a pinion on a brake disc which co-acts with a shoe or a brake shoe may act directly on the outer edges of the segments 18. The brakes may be provided at both sides of the mould cavity.
Patent GB-1307221-A (GB)
Title: Lead plate batteries
IPC: H01M4/56
Filed: 1969-01-20
Abstract: 1307221 Lead plate batteries ROBERT BOSCH GmbH 20 Feb 1970 [20 Jan 1969] 12328/69 Heading H1B More than 0À25 wt. per cent of a hydroxide, phosphate, carbonate, peroxide, hydroxidecarbonate or stearate of zinc, cadmium or mercury is added to the positive mass of a lead plate battery. The compound may be added to both the positive and the negative mass. The addition is stated to improve the cold output capacity of the battery. Examples illustrate the effect of various amounts up to 0À75% of zine or cadmium hydroxide, and for comparison lesser amounts than 0À25% down to 0À1% of these and also 0À1 to 0À6% of zinc or cadmium sulphate. Lignin and oil carbon are also used in some examples.
Patent GB-1308556-A (GB)
Title: Electrical circuit arrangement for valve emission current control
IPC: H01J49/02
Filed: 1970-07-07
Abstract: 1308556 Automatic current control MULLARD Ltd 7 July 1970 32877/70 Heading G3R The current at the anode 4 of an ion gauge valve 1 is maintained at a desired value by a control circuit comprising a differential amplifier 10 fed with a control voltage from a resistor 9 representative of the actual current and with a reference voltage Vr representative of the desired value, a transistor 11 which converts the correction voltage signal from the amplifier 10 to a correction current signal Ic and an amplifier 14 which is responsive to the correction current signal to vary the supply voltage Vh to the valve filament 5. According to whether the resistor 13 is equal to or larger than the resistor 12, so the correction voltage Vrc produced by the current Ic is equal to or proportionally greater than the correction voltage Vc of the amplifier 10. The latter has sufficient gain to nullify the effect of changes in the base to emitter voltage of transistor 11 with changes in Ic and temperature. Small variations of voltage across the transistor 11 are  taken up without Ic changing, such variations occurring for normal fluctuations of the anode and filament supply voltages. In a detailed circuit for the described embodiment, Fig.4 (not shown), the amplifier 10 comprises a long-tailed pair of transistors, whose output is fed to transistor 11 through another transistor, the amplifier 14 comprises three transistors, and a Zener diode is connected between the transistor 11 and the resistor 13. This diode may be replaced by a chain of transistors and resistors, Fig. 5 (not shown) if high circuit voltages are used. An "outgassing" voltage Vog may be connected across terminals 16 in place of a link 17. The advantages of the control circuit over known control circuits Figs.1 and 2 (not shown) are discussed.
Patent GB-1309557-A (GB)
Title: Electrical signalling systems
IPC: H04L1/02
Filed: 1970-01-27
Abstract: 1309557 Digital transmission systems; error detection PLESSEY TELECOMMUNICATIONS RESEARCH Ltd 19 April 1971 [27 Jan 1970] 3991/70 Heading H4P Received signals are passed simultaneously to signal detectors having differing error detection characteristics which cause a comparator to give an output when the detector outputs differ. Sampling in the detectors may be spaced in time, e.g. a half bit period. In a simple arrangement incoming phase modulated signals are passed to a frequency discriminator (12), Fig. 1 (not shown), and phase detector (14) the outputs from which are passed through separate regenerators (16, 19), also receiving sampling pulses (20, 21) spaced by a half bit period. It is assumed that the noise level is unlikely to be the same at both sampling times. A comparator (22) gives an output when its inputs differ. Ambiguity will arise if both inputs are the same and incorrect but the statistical probability of this is considered to be low. For two channel diversity operation the system is duplicated and terminals 50, 52 are each connected to receivers, one for each channel, and an additional comparator 54 indicates if the outputs of phase detectors 34, 36 differ, control unit 56 examining the outputs of the comparators.  If the signal on terminal 50 is erroneous, comparator 38 will produce an output and unit 56 will connect output terminal 58 to regenerator 48. If the signal on 52 is erroneous so that comparator 40 gives an output, terminal 58 will be connected to regenerator 46.  A different detector circuit may be used for other modulation systems. A clock synchronizing circuit is described in connection with, Fig. 3 (not shown), in which signals containing synchronizing information are applied through a terminal (70) to a detector described in connection with Fig. 1, connected to an error integrating circuit 76 controlling a switching unit (80) which connects a clock extraction circuit (74) to a local oscillator (78) only when the error rate in integrator 76 is below a determined value.
Patent GB-1310528-A (GB)
Title: Hydraulic servomotor arrangements
IPC: B62D5/12
Filed: 1969-07-25
Abstract: 1310528 Vehicle power steering HOBOURNEATON MFG CO Ltd 23 July 1970 [25 July 1969] 37607/69 Heading B7H A power assisted steering mechanism comprises a servomotor having a double acting piston 26 with unequal effective areas and a servo valve plunger or spool 33 controlling pressure fluid to the motor and having opposite surfaces in permanent communication with respective faces of the servo piston 26, the ratio of the effective areas of the servo piston and of the plunger surfaces being equal. The piston-rod 24 is flexibly anchored to the chassis of the vehicle and two lugs (76), Fig. 2 (not shown) on a tubular casing 13 have the ends of steering track arms (not shown) pivotally connected to them. A pitman stud 37 has the end of a pitman arm secured to it. Slots 44, 45 formed in an end member 14 allow movement of the stud which is pivotally connected to the spool 33. Movement of the spool 33 by the stud to the right cuts off communication between grooves 63 and 71 and pressure fluid flows from supply pipe (75) to cylinder space 65 to cause the cylinder 12 and tubular casing 13 to move to the right. Fluid displaced from cylinder space 56 flows to chamber 71 into recess 72 and to a reservoir. Pressure in chamber 61 rises resulting in the spool 33 returning to its central position. Movement of the spool 33 to the left by the pitman arm cuts off communication between grooves 71 and 72 and pressure fluid is applied to both cylinder spaces 56, 65 to cause cylinder 12 to move to the right owing to the unequal areas of piston 26. In a similar manner movement of the spool to the left produces a restoring force tending to return the spool to its central position.
Patent GB-1317904-A (GB)
Title: Method of manufacturing semiconductor devices
IPC: H01L23/047
Filed: 1969-10-06
Abstract: 1317904 Making semi-conductor devices JOSEPH LUCAS (INDUSTRIES) Ltd 23 Sept 1970 [6 Oct 1969] 48907/69 Heading H1K The drawing shows an exploded view of a completed device. A thermally conductive base 11 is provided with a moulded-on body 12 of synthetic resin which is apertured to receive a semi-conductor element 14 and solder preforms. Slots 15 in the moulded-on body 12 grip leads 16 and the slots and leads may be shaped to allow manual adjustment only along the line of the slots or may shaped to locate the leads positively. Such an assembly is furnace-soldered and the device is completed by forming over it an injection moulding 21.
Patent GB-1323642-A (GB)
Title: Supporting systems for shelving
IPC: A47B96/00
Filed: 1971-05-21
Abstract: 1323642 Shelving C H P DENROCHE 19 May 1972 [21 May 1971] 16267/71 Heading A4B A shelf supporting system comprises a channel section upright 4 provided with rows of spaced slots 4b in its forwardly disposed web and having an inverted J-shaped suspension hook 4a formed integrally therewith or secured thereto, the hook being slidably engaged with a fixed, horizontal rail. A shelf bracket 6 has one or more hooks 6a for engaging the slots 4b and includes a support flange 6c for a shelf 7 and an upturned flange 6d for engaging a slot 7a in the underside of the shelf 7. The flange 6c may be disposed above the lower edge of the bracket 6.
Patent GB-1325152-A (GB)
Title: Gyroscope and spin-up system
IPC: G01C19/12
Filed: 1970-09-30
Abstract: 1325152 Gyroscopic apparatus PLESSEY TELECOMMUNICATIONS RESEARCH Ltd 30 Sept 1970 [3 Oct 1969] 48745/69 Heading G1C A gyroscope rotor 10 is provided with means to generate a predetermined number of pulses per revolution, the pulses being used to excite a resonant device 3 (Fig. 1) or 25 (Fig. 4) having a resonant frequency corresponding to the pulse frequency at the rotor operating speed so that, on spin-up of the rotor, when the oscillations of the resonant device reach a predetermined amplitude the drive to the rotor is de-energized. The rotor 10 is spun-up by an air jet 1 impinging on bucket recesses 2 in the rotor periphery, and is supported on a spherical air bearing 12, the air being supplied from a source 14. A caging member 15 is movable between a retracted position and the caging position shown (Fig.1) in which a frusto-conical end portion is closely spaced relative to a frustoconical surface of the rotor bearing shell 11, air escaping from the spherical air bearing 12 forming an air bearing between the frusto-conical surfaces. In Fig.1, pressure pulses in the air supply line 47 induced by the passage of recesses 2 past the nozzle 1 are amplified by a fluidic amplifier 48 and used to excite a reed 3. When the reed oscillation reaches the predetermined amplitude, a back-pressure sensor 4 changes a bistable amplifier switch 5 to pressurize the upper side of a diaphragm 16 instead of the lower side, to move a valve spool 6 to shut off the air supply to nozzle 1, and to apply pressure to a bellows 9 to retract the caging member 15. A holding pressure is also applied via a line 8 to the upper side of the diaphragm 16. In modifications, the reed 3 may be placed adjacent the nozzle 1 to be excited by the exhaust therefrom Figs. 2, 3, (not shown). In Fig. 4, sensing jets 20, 21 spaced 90 degrees apart about the rotor periphery are associated with peripheral ridges 17, 19 on the rotor which undulate in the axial direction of the rotor so that their passage beneath the jets induces pulses therein which are amplified by a "cold-gas" fluidic amplifier and passed via a multi-port valve incorporated in the caging member 15 to a resonant circuit 25. When the oscillation therein reaches the predetermined amplitude a device 26 moves the valve member 15 to close the air supply to spin-up jet 1, and to connect the pulse signals to a "hot-gas" fluidic amplifier for use in a steering system of a vehicle in which the gyro is installed. (Movement of the rotor axis relative to the stator axis altering the pulse durations in the sensor jets to provide pulseduration modulation signals, assuming the rotor has a constant angular velocity). The rotor is uncaged after a slight delay by moving a latch by a resonant device Fig. 5 (not shown). A tuning fork or a balance wheel may be used instead of the reed 3.