baber/WOPTO huggingface dataset:
Patent GB-1278647-A (GB)
Title: Electrical housing assembly
Inventor: COOPER DAVID EVANS
IPC: H01L23/16
Filed: 1969-08-12
Abstract: 1278647 Semi-conductor devices MOTOROLA Inc 12 Aug 1969 [21 Aug 1968] 40266/69 Heading H1K An electrical component such as the thyristor 18 illustrated is supported by an annular shelf 20 extending inwardly from an insulating carrier ring 21, e.g. of plastics material, and is contacted on opposite sides by respective central portions 12, 13 of a pair of pressure contact members 10, 11. Outwardly directed flexible annular portions 14, 15 of the contact members 10, 11 engage the outer periphery of the carrier ring 21 and are secured and sealed thereto by an insulating locking ring 35 which, in the embodiment shown, comprises a plastics ring moulded around the edge of the device housing by means of an annular die set 60, but which may alternatively comprise a two-part ceramic ring. A conductor 23 extends through the locking ring 35 and carrier ring 21 to the vicinity of the device 18 where, in the arrangement shown, it is connected to a conducting ring 22 and then, through a wire 26, to the gate electrode 25 of the thyristor. Silicone material 49 covers the edge of the device 18. A plurality of gate electrodes may be provided, each connected by wire or by part of a lead frame to the conducting ring 22 in the vicinity of a recess 30 within the carrier ring 21. External contact to the main electrodes of the device 18 is made by radial terminals such as 46 extending into the locking ring 35 and brazed to tabs 40 on the contact members 10, 11. Other tabs 38, 39 on the members 10, 11 serve to lock the inner parts of the housing within the moulded locking ring 35. A three-layer diode or triac for use in triggering the main thyristor may be supported on the gate electrode 25, and other electrical elements may also be inserted in the space between the contact members 10, 11 and the carrier ring 21. Transistors may be encapsulated in the housing to which the invention relates.
Patent GB-1104848-A (GB)
Title: A d.c. switching and amplifying arrangement
IPC: H03F15/00
Filed: 1965-09-21
Abstract: 1,104,848. Semi-conductor amplifying; oscillating and switching circuits. COMPAGNIE INDUSTRIELLE DES TELECOMMUNICATIONS. 21 Sept., 1965 [26 Oct., 1964], No. 40268/65. Heading H3T. A Hall plate with two pairs of terminals 14, 15 and 16, 17, respectively, is located in the gap of electromagnet 11 having a control winding 12; one pair of terminals 14, 15 feeds an A.C. amplifier 18 the output of which comprises two transformers with their primary windings 19b, 20b connected in series and tuned by separate capacitors 19a, 20a, respectively, to different frequencies. The secondary windings 21, 22 of the transformers are so connected in series to the second pair of terminals 16, 17 of the Hall plate as to provide back-coupling, so that when there is a current in control winding 12 the circuit oscillates at the one frequency or the other in dependence upon the polarity of the magnetic field, i.e. the sense of the current in the control winding. The transformers also comprise tertiary windings 23, 24 the outputs of which are rectified by rectifier circuits 25, 26, respectively, which are poled oppositely and give a combined voltage output at terminals 31, 32 which has the same sense as the current in control winding 12 but is independent of its value for appreciable currents. This output may be fed back to a second winding on magnet 11 (Fig. 3, not shown) so as to oppose the effect of the current in control winding 12 and the arrangement may then operate as a linear amplifier. This arrangement may alternatively be made unstable, by increasing the gain in amplifier 18 or delaying the negative feedback current, so that the latter oscillates about a mean value.
Patent GB-1085590-A (GB)
Title: Improvements in or relating to magnetic core stores
IPC: G11C11/06
Filed: 1966-09-09
Abstract: 1,085,590. Magnetic storage matrices. INTERNATIONAL BUSINESS MACHINES CORPORATION. Sept. 9, 1966 [Oct. 5, 1965], No. 40358/66. Heading H3B. The rise times of read and write currents in a magnetic core matrix are reduced by injecting pulses into the drive circuits upon initiation of the drive currents. Read and write drivers 10, 11 are connected to row drive lines 2-1 to 2-8 by way of diodes 101, 121, the other end of each line being connected to a different one of a plurality of further write and read drivers (42, 43, Fig. 2B, not shown). For reading, AND- circuits 14, 15 are energized, and simultaneously AND-circuits (47, 48) corresponding to AND- circuits 15, 16 are energized at the other end of the lines. The lower end of primary winding 114 of transformer 111 is earthed through  circuit 14 so that current flows and transistor 107 is switched on. The lower end of primary winding 106 of transformer 104 is earthed through circuit 15, completing a circuit from terminal 108 to earth through winding 106, and causing transistor 100 to be rapidly switched on. Similarly, transistors in the read driver (43) at the other end of the line, and corresponding to transistors 120, 128, are switched on so that a circuit is completed from terminal 20 through line 2-1 to a negative terminal (71) corresponding to terminal 30. At the same time, AND- circuit 26 is energized, causing transistors 200, 201 to be switched on and giving rise to a current flow in the primary winding 24 of a transformer 23, which causes a pulse to be induced in secondary winding 22 and thereby temporarily increases to supply voltage to reduce the rise time of the pulse in line 2-1. An analgous operation is performed for writing so that transistor 120 and the transistor corresponding to 100 at the other end of the drive line are both rendered conductive and a pulse is induced in the secondary winding (76) of a transformer (74), corresponding to 23. Similar circuits are provided for the column drive lines. Inhibit lines are provided parallel to the column drive lines for determining the binary digit to be written, and sense lines, which may be the inhibit lines, are also provided. In the driver circuits each transistor has connected across its emitter-collector terminals a diode in series with an additional secondary winding of the input transformer of the transistor. It is stated that this arrangement causes the transistors to operate close to, but slightly out of, saturation which permits rapid switching-off.
Patent GB-1456716-A (GB)
Title: Tube mills
IPC: B03B5/56
Filed: 1974-09-18
Abstract: 1456716 Tube mills BARBER-GREENE CO 18 Sept 1974 [3 Dec 1973] 40622/74 Heading B2A  A tube mill having internal lifters 3 and a dewatering perforate trummel at the dischange end has the drum driven by rubber tires T, Fig. 1, which are readily removable from their drive nuts. Mounting plates 12 Fig. 8 are secured to transverse beams 8 Fig. 2 and include semi-circular bearing adaptors 15 which are slipped into complementary recesses 16 in the adaptors 15. Bearing assemblies 10 set in the adaptors 15 and are held in place by slots 17. The assemblies include opposed tapered roller bearings 20, 21. Fig. 5 mounted on a rotatable drive shaft 24, which is driven by a motor E. To permit the tires T to be removed their mounting arrangement comprises double tire hubs 51, Fig. 5 keyed to the shaft 24 each hub shaving a flange 53. The tire rim 54 has a flange 55 bolted to the flange 53. The hub also has a smaller diameter second flange 63. Secured to this flange 63 is a segmental two part hub ring 70 of the same outer diameter as the flange 53. This permits a tire assembly, viz the tire T and its radial flange 55 to be interchanged. To replace tire T 2 , Fig. 5, adjacent tire T is first removed from the flange 70. Tire T 2  is then readily removable due to the difference in radial dimension.  The shaft 24 is made in sections and thus is itself readily removable. Tire guide wheels 76, 77 bear against radially extending flanges 78, 79 fixed around the periphery of the drum and prevent the drum shifting axially.
Patent GB-1107198-A (GB)
Title: Plating brighteners and electrolytes
Inventor: COPE RICHARD POLLARD
IPC: C25D3/38
Filed: 1966-08-08
Abstract: An aqueous acidic solution for electro-depositing nickel and/or cobalt contains (a) a soluble salt of the metal(s) and (b) a brightener which is an ester of an amino- and/or hydroxy-substituted C2 to C4 aliphatic carboxylic acid and an acetylenic dibasic alcohol having up to 8 carbon atoms in which the hydroxyl groups are both terminal and the acetylenic bond is non-terminal.  Optional additional ingredients specified are saccharin, sodium styrene sulphonate, disodium 2, 5-benzenedisulphonate, disodium 2, 5-benzenedisulphonate, disodium 2, 7-naphthalenedisulphonate, trisodium 1, 3, 6-naphthalenetrisulphonate, sodium chloride and ammonium sulphate.  A copper electrolyte which contains the glycinebutynediol reaction product as a grain refining agent is also mentioned.ALSO:Novel esters are obtained by reacting (A) an amino- and/or hydroxy-substituted C2 to C4 aliphatic carboxylic acid with (B) an acetylenic dibasic alcohol having up to 8 carbon atoms in which the hydroxyl groups are both terminal and the acetylenic bond is non-terminal, in the presence of an aromatic hydrocarbon solvent. Esters are specified which are derived from glycine, threonine, alanine, b -aminobutyric acid, b -aminopropionic acid, potassium hydrogen tartrate and malic acid.  The esters are useful as brighteners or grain-refining agents in electroplating compositions (see Division C7).
Patent GB-956950-A (GB)
Title: Cathode structures for electronic discharge devices
IPC: H01J1/20
Filed: 1962-10-29
Abstract: 956,950. Cathode constructions. CSF-COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL. Oct. 29, 1962 [Nov. 9, 1961], No. 40733/62. Heading H1D. A cylindrical supporting " skirt " for a cathode is in the form of a wire mesh to reduce heat loss and has a diameter and height of the order of 2 to 4 millimeters. As shown a disc cathode 1, with its heating cylinder 2 and heater 3 is supported on a disc 5 by a skirt 4 comprising two wire helices wound in opposite directions and brazed at crossing points, Fig. 2 (not shown). Alternatively, Fig. 3 (not shown), the skirt may comprise a number of parallel wires arranged to define a cylinder, around which is wound a wire helix. The parallel wires may be tungsten of 25 microns diameter spaced 0.4 millimeters, and the tungsten helix wire may have a diameter of 64 microns. The skirt may be made automatically by a winding machine combined with a brazing furnace.
Patent GB-1021978-A (GB)
Title: Improvements in and relating to apparatus for and method of winding electrical coils
IPC: H01F41/077
Filed: 1964-10-06
Abstract: 1,021,978. Making coils; rolling wire. MICAFIL Ltd. Oct. 6, 1964 [Dec. 19, 1963], No. 40802/64. Headings B3A and B3M. In apparatus for winding an electric coil, round wire 1 is passed through rollers 2, 3, and is flattened thereby to a strip of predetermined width. The width of the strip is determined by opposed rollers (Fig. 3, not shown), and an additional pair of rollers may be used to form hexagonal strip. The coil former 7 may be provided with grooves to accommodate the flat surface of the strip.
Patent GB-1160526-A (GB)
Title: Rotating Electrical Frequency Converting Apparatus
IPC: H02K47/24
Filed: 1966-09-14
Abstract: 1,160,526. Frequency-changers; conductors for dynamo-electric machines. GENERAL DYNAMICS CORP. 14 Sept., 1966 [21 Sept., 1965], No. 41060/66. Heading H2A. An induction frequency-converter of the type comprising motor and generator windings 8a, 8b on the stator 4 and a single winding 9 on the rotor 3 has an auxiliary motor 7 coupled to the rotor shaft 14 for running up the rotor to synchronous speed. As shown, the stator windings 8a, 11 of the converter and auxiliary motor respectively produce two-pole rotor fluxes and the winding 8b produces a contra-rotating 8-pole flux.
Patent GB-950979-A (GB)
Title: Improvements relating to double-glazed windows
IPC: E06B3/64
Filed: 1961-11-18
Abstract: 950,979. Double glazed windows; window frames. AUSTER Ltd., and W. W. SMALL. Oct. 22, 1962 [Nov. 18, 1961], No. 41354/61. Headings E1J and E1R. In a double-glazed window the two panes 7, 7<SP>1</SP> are mounted in channels 8, 8<SP>1</SP> in a rubber or like glazing strip 9 supported over a longitudinal slot in a hollow frame member 1 containing an inflatable tube 5, which, when inflated, exerts a pressure on the base of the strip 9, this latter being provided with a slit 11 between the panes and with grooves or rebates in its sides engaged by the sides of the longitudinal slot in the member 1. The slit 11 is initially wider at the bottom than at the top. The side wall 12 of the frame member is detachable for the insertion of the tube 5. The member 1 has a stop flange 2 for mounting in a window aperture of a vehicle or building.
Patent GB-1201695-A (GB)
Title: Improvements in and relating to data processing systems
Inventor: CREECH BOBBY ANDREW
IPC: G06F12/14
Filed: 1968-08-30
Abstract: 1,201,695. Computers; data storage protection. BURROUGHS CORP. 30 Aug., 1968 [25 Sept., 1967], No. 41510/68. Headings G4A and G4C. In a data processing system, a word is read from a location of an addressable memory into a first buffer register and transferred therefrom to a processor, a word supplied to a second buffer register by the processor being written into the same location. A processor communicates with a plurality of memory units over a common bus, each memory unit having an addressable random-access memory and two buffer registers. The processor supplies a word to be written into one of the memories, to its second buffer, and supplies the memory word address, the addressed word being read out into the first buffer. If a memory protect signal is present from the processor, a protect bit of the word in the first buffer is tested and if it is set the contents of the first buffer are restored into the memory. If it is not set, the contents of the second buffer are stored into the addressed memory location. If the memory protect signal from the processor is not present, the contents of the second buffer are stored into the addressed memory location. In any case, the contents of the first buffer are supplied to a register in the processor where the protect bit is tested. If it is set, interrupt occurs with branch to a fix-up routine and an alarm is given. If it is not set, an operation complete signal is produced. Reference has been directed by the Comptroller to Specification 931,126.
Patent GB-1204516-A (GB)
Title: An agent for increasing the viscosity of uncured alkyd copolymer resinous mixtures
IPC: C08K3/26
Filed: 1967-09-12
Abstract: 1,204,516. Calcined basic magnesium carbonate. TAKEDA CHEMICAL INDUSTRIES Ltd. 12 Sept., 1967 [12 Sept., 1966], No. 41657/67. Heading CIA. [Also in Division C3] A calcined basic magnesium carbonate has the composition by weight MgO : 82-96%, CO 2 : 2-8% and H 2 O: 2-11%. It is made by calcining at 350-700‹ C. a basic Mg carbonate xMgO.yCO 2 .zH 2 O (where x, y, and z=2 to 6) and the product is used to increase the viscosity of an uncured alkyd resin.
Patent GB-987910-A (GB)
Title: Improvements in or relating to television and like camera tubes
Inventor: BEURLE RAYMOND LOUIS
IPC: H04N5/228
Filed: 1962-11-06
Abstract: 987,910. Television pick-up tubes. ENGLISH ELECTRIC VALVE CO. Ltd. Sept. 27, 1963 [Nov. 6, 1962], No. 41856/62. Heading H1D. A television camera tube comprises a photoconductive layer 3, Fig. 1, of low, dark resistivity, i.e. of the order of 10<SP>10</SP> ohms/cms<SP>3</SP> or less, on a conducting signal plate 2, a scanning electron beam for generating output signals corresponding to an image incident on layer 3 by restoring elemental areas of layer 3 to a datum potential and further comprises means for bombarding elemental areas of layer 3 with electrons intermediate successive scans thereof, to restore, or tend to restore, the surface thereof to the datum potential. As shown, an electron gun 4 produces a beam having a crosssection which is elongated in a direction perpendicular to the direction of line scanning, and covers two lines. Between successive scans the entire surface of layer 3 tends to adopt the potential of signal plate 2, but each elemental area of layer 3 is bombarded in two successive lines of the scan and during the interval between, significant leakage only occurs in illuminated areas, so that while the lower part of the beam provides a constant charging current, the upper part of the beam provides output signals corresponding to the image being televised. Instead of using an elongated beam, two separate beams, one above the other, and produced by a single gun or two separate guns, may be scanned either together, or independently, over layer 3, the spacing between the beams being equal to that between adjacent scan lines or multiples thereof. In an alternative arrangement, the layer 3 is uniformly bombarded by slow or fast electrons from a flood gun 12, which may be annular, whereby elemental areas of layer 3 adopt equilibrium potentials intermediate those of the reading gun cathode 11 and the signal plate 2, and dependent on the local illumination, until scanning with the reading beam locally restores layer 3 to the potential of cathode 11 and thereby provides an output signal. Low or high velocity scanning beams may be used and output signals may be derived from the signal plate or from a secondary election collecting grid or from an election multiplier. The photoconductive layer may be of cadmium sulphide or cadmium selenide, or of cooled silicon doped with manganese for sensitivity to infra-red radiation.
Patent GB-1504436-A (GB)
Title: Plant-growing device with a water reservoir
IPC: A01G27/04
Filed: 1976-10-08
Abstract: 1504436 Watering plants J ROTH 8 Oct 1976 [28 Oct 1975] 41875/76 Heading A1E A container for growing plants is subdivided by a perforated plate 4 into a reservoir 2 and a compartment for growing medium, water being transmitted to the growing medium by capillary material 9 in tubes 8 extending through the plate. To vary the supply of water to the medium any of the tubes may be closed by stoppers 10. The container is moulded from foamed polyurethane, the plate 4 resting on pillars 11 and an internal ledge of the container. A watersupply channel 5 is provided, and a sight glass 3 enables the water level to be checked. The capillary material may be foamed polyurethane or foamed phenolic material.
Patent GB-1101019-A (GB)
Title: Improvements in/or relating to guidance apparatus for missiles
IPC: H04B1/18
Filed: 1966-09-21
Abstract: 1,101,019. Filter networks. NORD-AVIATION-SOC. NATIONALE DE CONSTRUCTIONS AERONAUTIQUES. 21 Sept., 1966 [21 Sept., 1965], No. 42229/66. Heading H3V. [Also in Division F3] In a missile 10 guided after launching by command signals transmitted through paid-out wires 5, 6 from a firing station, means are provided to avoid disturbance of the signals owing to interfering radioelectric waves. The wires 5, 6 are connected to terminals A, B within the missile. Two identical coils 3, 4 connect these terminals to input terminals C, D of a receiver 7. Two identical condensers 1, 2 are serially connected across the terminals A, B, and the junction between the condensers is connected to the body 10. It is stated that whilst the functioning of the device has not been fully explored, a probable explanation of its efficiency is that, as concerns the disturbing currents there is, in the circuit, a fixed A.C. potential, whereas the wires 5, 6 are submitted to a floating D.C. potential with the result that the receiver is shortcircuited and is not disturbed. The signals are modulated square wave voltages of frequencies not more than about 16 Hz.
Patent GB-990009-A (GB)
Title: Feeder for supplying plastic raw-material to a moulding press
IPC: B30B15/30
Filed: 1963-10-28
Abstract: 990,009. Feeding mechanism. A. B. JOCHUMSEN. Oct. 28, 1963 [Oct. 31, 1962], No. 42337/63. Heading B5A. [Also in Division B8] In a mechanism, for supplying powdered plastic material to a moulding press, the material is sucked from a trough 2 into a container 4, positioned above the press, by a rotary piston vacuum pump 21, the material being retained within the container by a screen 17 and supported therein by a flap 8 biased closed by a spring 11. The inlet pipe 20 of the pump is connected, via pipe 24 and throttle opening 26, to an air receiver 25, which carries a vacuum senser 27 which operates a switch 29 in the control circuit 14 of the pump motor 16. As the density of the material in the container increases the vacuum in the air receiver increases until at a certain value the sensing means 27 is actuated to open switch 29 and stop the motor 16. At this point the weight of the material opens flap 8, thus discharging the material into the moulding press (not shown) and opening switch 13, in control circuit 14. As the flap opens the pressure in the air receiver increases thus reclosing the switch 29. When all the material has been discharged the flap recloses thus reclosing the switch 13 and restarting the motor 16 to initiate another cycle. Any temporary increase in pressure due to e.g. blockage in feed pipe 3, is transmitted only slowly to the air-receiver due to the throttle opening 26 and does not operate the vacuum sensing means.
Patent GB-1108562-A (GB)
Title: Improvements in and relating to fluid pressure operated valves
Inventor: WIMBUSH MAURICE JOHN
IPC: B60T13/24
Filed: 1963-10-29
Abstract: 1,108,562. Fluid control of brakes; valves. AUTOMOTIVE PRODUCTS CO. Ltd. 28 Oct., 1964 [29 Oct., 1963], No. 42702/63. Headings F2F and F2V. An hydraulically-operated valve for connection in a vehicle brake system between the outets of a pedal-operated master cylinder and the servo-motorsof a pair of power-operated slave cylinders which are connected to front and rear wheel brakes, comprises a pair of pistons 7 and 8 slidably arranged end to end in abutting relationship in a blind bore 2 of a valve body 1, inlet parts 10 and 11 in said body connectable to the respective master cylinder outlets and respectively feeding fluid to one end of the piston 7 and to the annular space 9 defined by the abutting piston ends, a valve housing 4 having two outlet ports 29, 30 each connectable to a separate servomotor, and valve closure members 22 and 24 operatively connected to piston 8 so that the supply of fluid to either one or both inlet ports effects operation of the valve closure members and actuation of the servomotors. Piston 8 is connected by a rod 18 to a tubular bush 17, which is adapted to be normally closed by closure member 22 and supported by a diaphragm 12. The diaphragm forms two chambers 13 and 14 which are normally interconnected through the unseated valve 22 to allow both chambers and hence the servomotors to be connected to atmosphere through a port 15. On supply of fluid to either one or both inlets 10 and 11, bush 17 is seated against closure member 22 to close off chamber 14 from atmosphere and simultaneously valve closure member 24 is unseated to allow compressed air supplied to port 28 to pass to the servomotors through outlets 29 and 30. In another embodiment, Fig. 3 (not shown), the valve is incorporated in a boss of a servomotor. In a further embodiment, Fig. 4 (not shown) the valve is adapted for actuation of vacuum-suspended servomotors, a dual line braking system incorporating such a valve being described and illustrated, Fig. 5 (not shown).
Patent GB-1439278-A (GB)
Title: Headrests
IPC: A47C16/00
Filed: 1973-09-11
Abstract: 1439278 Adjustable head rests AMERICAN OPTICAL CORP 11 Sept 1973 [11 Sept 1972] 42714/73 Heading A4J An adjustable head rest comprises an arm 10 pivotally mounted on one end of a link 12 having its other end pivotally mounted on a bracket 15 adapted for attachment to a chair, the head rest being locked in the adjusted position by the engagement of teeth on the ends of two shafts 25 slidably mounted in the link 12 with splines on bearings 13, 14 forming the pivotal connections of the link with the arm and bracket. The teeth are moved into engagement with the splines by a manually rotatable cam 50 placed between the two shafts and biased out of engagement by two sprigs 30, (30') Fig. 2 (not shown) connected between the shafts 25, and link 12.