baber/WOPTO huggingface dataset:
Patent GB-799438-A (GB)
Title: Improvements relating to the extraction of liquid from fibrous or like material
IPC: D06F47/00
Filed: 1955-12-17
Abstract: 799,438. Filter presses. SANDERSON & MURRAY, Ltd., and DAVIDSON, M. W. Oct. 12, 1956 [Dec. 17, 1955], No. 36243/55. Class 46. Liquid is extracted from fibrous &c. material by conveying it to a position below a deflated inflatable bag, inflating the bag to urge its outer face into contact with the material to conform with uniform tension to the shape thereof, deflating the bag after the liquid has been extracted, the material being conveyed to and beyond its position beneath the bag intermittently and semi-continuously. A perforated conveyer 5 delivers granular or fibrous material 8 on to a perforated platen 3 beneath an upper platen consisting of a flexible bag 1 suspended by springs 23 from a rigid frame 2 and adapted, when inflated through a central tube 21 to contact the material and press liquid from it through the perforated conveyer 5 and platen 3 into channels 9 beneath the platen and formed by inverted T-section bars, the channels leading to a discharge trough 10. The conveyer is halted while pressure fluid inflates the bag 1 which comprises two flexible sheets 15, 16 secured together at their edges by rigid rings 17, 18, the upper sheet 15 having a central aperture 19 about which an annular flange or plate 20 secures the pipe 21 to the bag.
Patent GB-1180159-A (GB)
Title: A Process and an Apparatus for eliminating Short Circuits in the Cells of Electrolysis Plants
Inventor: SCHAFER ROLF
IPC: H02H7/00
Filed: 1968-07-30
Abstract: 1,180,159. Protective arrangements. FARBENFABRIKEN BAYER A.G. 30 July, 1968 [1 Aug., 1967], No. 36279/68. Heading HK2. [Also in Divisions C7 and G2] The current taken by an electrolytic cell 10, e.g. of the type used for the electrolysis of alkali metal chlorides, is monitored by an element 13 comprising a spring-biased ferro-magnetic armature; should a short-circuit occur in the cell, the element 13 acts as a switch to energize a relay 15 in an auxiliary circuit which is arranged to operate a servomotor 22 for the electrodeadjusting mechanism 23 of the cell, whereby the anodes 8, 9 are raised to eliminate the short circuit. The auxiliary circuit may include a timing relay 21 and may be provided with an alarm device.
Patent GB-877752-A (GB)
Title: Calibration apparatus
IPC: H04B1/66
Filed: 1959-10-26
Abstract: 877,752. Measuring amplifier gain. GENERAL RADIO CO. Oct. 26, 1959 [Oct. 27, 1958], No. 36284/59. Class 37. In an arrangement wherein the gain of an amplifier 1 is calibrated against the attenuation of a network 17 in a feedback path around the amplifier by the onset of self-oscillation, the feedback path includes a limiter 11 and a selective network 15 which is arranged to select a frequency within the working band of the amplifier. An emitter follower transistor amplifier forms the output circuit of an amplifier described with reference to Fig. 2 (not shown), and a pair of diode limiters are effective both during normal amplification, and during calibration. An arrangement including a phase reverser for use with an amplifier in which the phase of a signal is reversed is described with reference to Fig. 3 (not shown).
Patent GB-1019627-A (GB)
Title: Apparatus for producing a tobacco filler
IPC: A24C5/18
Filed: 1961-08-21
Abstract: 1,019,627. Cigarette making machines. K. KÍRBER. Aug. 21, 1962 [Aug. 21, 1961; July 13, 1962; July 17, 1962], Nos. 36286/65; 36287/62 and 36288/62. Divided out of 1,019,626. Heading A2C. The Specification describes the same apparatus as Specification 1,019,626, but the claims are directed to apparatus for producing a tobacco filler stream comprising a conveyer means providing a support for a tobacco stream and a presser device having a presser surface lying opposite to the support and moving in the same direction, the presser surface serving to press on the tobacco stream over a section of the tobacco stream which is long in comparison with the width of the stream, and a loading device adapted to cause the pressing device to exert a uniform and constant pressure on the section of the tobacco stream.
Patent GB-1410170-A (GB)
Title: Bale accumulators
IPC: A01D85/00
Filed: 1971-08-02
Abstract: 1410170 Bale accumulators J A D HAY WARD 2 Nov 1972 [2 Aug 1971] 36310/71 Heading B5F A bale handling apparatus comprises a grouping unit 1 which forms bales into ranks extending tranversely of the apparatus and a releasing unit 2 which receives the ranks from unit 1 and has a gate 67 which is unlatched at will by the operator to release the rank or ranks thereon. The apparatus is coupled by means 6 to a crop baler. The grouping unit has a roller bed 7. When a bale drops from the baler on to one end of the bed it depresses arm 25 to initiate movement of an arm 42 which pushes the bale along the bed past a non-return flap 43. A further flap 47 at the other end of the bed is depressed when the bed is full of bales between the flaps 43 and 47 and causes, on the next depression of the arm 25, a rod 23 mounted on chains 22 to move the rank of bales thus formed on to unit 2. The arm 42 and chains 22 may be driven by an hydraulic motor 9 having an overload valve, by an electric or I.C. motor, or by the power take off shaft of the tractor hauling the baler. The unit 2 comprises a sledge universally coupled to unit 1, and having spring steel strips 72 lying on the ground and telescopic side rails 61. Removable wheels may be provided for the sledge.
Patent GB-959388-A (GB)
Title: Improvements in or relating to apparatus for converting solar energy into electric energy
Inventor: CHANDLER THOMAS WILFRED
IPC: H02J7/35
Filed: 1960-10-24
Abstract: 959,388. Photovoltaic devices. GENERAL ELECTRIC CO. Ltd. Sept. 29, 1961 [Oct. 24, 1960], No. 36418/60. Heading H1K. An apparatus for converting solar energy into electrical energy comprises a multiplicity of interconnected photo-cells, at least some of which are disposed generally in a plane to form a plurality of rows, each device in said rows being mounted inclined to the plane to give maximum output when sunlight falls on the device at an acute angle greater than 20 degrees to the normal to said plane. Each device may consist of a silicon PN-junction wafer encapsulated in thermosetting resin. In a typical apparatus, Fig. 1, the rows are mounted on inclined slats 4. Additional rows of devices are mounted on the top panel 3 of box 2 at a different angle. In use the box is disposed so that all the cells face directly into the sun at mid-day. Specification 955,595 is referred to.
Patent GB-1330731-A (GB)
Title: Paper production process
IPC: D21H17/28
Filed: 1971-08-03
Abstract: 1330731 Oil-starch emulsion for treating paper WESTVACO CORP 3 Aug 1971 [13 Aug 1970] 36460/71 Heading C3U [Also in Division D2] A paper suitable for use as envelope paper, punching tape and self-facing label paper (i.e. paper which is cut for the purposes of its end use) has applied thereto an oil in water emulsion of a lubricating oil in an aqueous starch (e.g. pearl, acid modified, cationic, oxidized or ethylated starch).
Patent GB-1293935-A (GB)
Title: Method of stabilizing plastic containers
Inventor: BAZETT PATRICK SEYMOUR
IPC: B29C71/04
Filed: 1969-07-21
Abstract: 1293935 Annealing thermoplastic products KEMP PRODUCTS Ltd 21 July 1970 [21 July 1969] 36478/69 Heading C3P Thermoplastic products are dimensionally stabilized to an annealed memory point disposed between their true plastic memory point and their initial plastic memory point by a method which comprises (a) placing a liquid absorbent to microwave radiant energy in juxtaposition to the surface of the thermoplastic product and (b) subjecting the liquid to microwave radiant energy to heat the liquid and elevate its temperature in excess of the initial plastic memory point but below the true plastic memory point whereby the thermoplastic product is heated to the annealed memory point. The product may be a container of a plastic having a low absorption coefficient for microwave radiation, and the liquid may be contained therein. The invention is exemplified by the stabilizing of polyethylene bottles, e.g. for the dairy industry, using water which is vaporized by radiation as absorbent liquid.
Patent GB-931085-A (GB)
Title: Detachable propulsion mechanisms for boats
Inventor: PRIDDLE ALBERT THOMAS CLAUD
IPC: B63H1/16
Filed: 1958-11-13
Abstract: 931,085. Boats' detachable propulsion units. C.A.V. Ltd. Nov. 12, 1959 [Nov. 13, 1958], No. 36501/58. Class 114. In a propulsion mechanism unit for detachable connection to a boat including an internal combustion engine, a propeller rotatable by the engine and means whereby the unit can be moved angularly to steer the boat, the engine is of the compression ignition type having a cylinder block 1 and crank-case 2 arranged to be totally submerged below water level X-X when the mechanism is in normal use. The unit has an upper portion 15 mounted for swivelling movement within a collar 16 pivoted on a bracket 17 clamped to the stem board 18 of the boat, a catch piece 19 being engageable with a pin 20 in the bracket to retain the propeller out of the water when the unit moves angularly in the bracket, and an intermediate portion constituting a fuel tank 9. The upper portion defines two filling necks, one for the fuel tank 9 and the other leading to a tube 27 opening into oil sump 2b in the engine, the tube also serving to admit combustion air to the engine. The exhaust pipe 33 extends into a silencer 34. The outer ends of the blades 4a of the propeller are connected by an annular rim 4b of sufficient mass the cause the propeller to act also as a flywheel for the engine.
Patent GB-1094699-A (GB)
Title: Method of attaching leads to thin films
IPC: H01R4/06
Filed: 1965-08-25
Abstract: 1,094,699. Assembling components to circuit boards; welding by pressure. CORNING GLASS WORKS. Aug. 25, 1965 [Aug. 27, 1964], No. 36551/65. Headings B3A and B3R. [Also in Division H2] A terminal lead 16 is passed through an aperture in a substrate 10 bearing a thin conductive film 12, and connected to the film by having its end upset by dies 20, 22 to form a cap 26 and by being welded to the film by electric current passed through the dies. The lead 16 is located in the substrate by a flange 18 which is preferably pre-formed but which may be formed during the upsetting process. The lead 16 may be pushed into the substrate from the film side, in which case it is the flange 18 which is welded to the film and not the cap 26.
Patent GB-1456364-A (GB)
IPC: H02P7/29
Filed: 1972-08-05
Abstract: 1456364 Control of DC motors SOUTH WESTERN INDUSTRIAL RESEARCH Ltd 1 Nov 1973 [5 Aug 1972] 36666/72 Heading H2J A separately-excited D.C. motor 14 is driven by variable pulse width control of a switching transistor Q15 (Fig. 3) connected to a D.C. supply (not shown) and is regeneratively braked by intermittently switching a transistor Q16 on and off (with transistor Q15 off), the energy stored in the motor windings during each short circuit current pulse producing an induced voltage when the transistor Q16 turns off, which voltage adds to the back EMF of the motor to produce a total voltage in excess of the D.C. supply and so cause a regenerative current pulse to flow thereto through diode D13. Fig. 1 shows the complete control system for the motor and comprises a reference input 10 derived from a potentiometer controlled by a foot pedal or hand controller (e.g. for a vehicle or fork lift truck application), a summing circuit 12 receiving the input 10 and a feedback signal derived from the motor current, a hysteresis circuit 15 feeding width-controlled pulses to a logic circuit 11 (also fed with the input 10) and circuits 17, 18 and 19, 20 controlled by the logic circuit 11 to respectively regeneratively brake or drive the motor according to the polarity and value of the input 10. Hysteresis circuit 15 responds to rise and fall of the sensed motor current to switch off and on at upper and lower limits whichever circuit 17, 18 or 19, 20 is being selected by the logic circuit 11. Circuits 11, 15 comprise interconnected amplifiers, resistors, capacitors, diodes and transistors, Fig. 2 (not shown), signal clamping being provided to limit the motor current to a maximum value. In Fig. 3 the transistor Q15, Q16 are respectively controlled by constant current driver circuits Q7, Q8, Q9, R34, R35, ZD3 and Q12, Q13, Q14, R42, R44, ZD4, the signal from logic circuit 11 being passed to one or other of transistors Q10, Q11 operating in constant current mode and thence to the Zener diode ZD3 or ZD4 setting the output transistor current. A characteristic shaper 21 (Fig. 1) allows the control of the motor current (i.e. torque) by the system to become a voltage (i.e. speed) control.
Patent GB-1175283-A (GB)
Title: A Method of Making Refined Iron.
Inventor: CHERNY ANATOLY ALEXEEVICH
IPC: C21C1/08
Filed: 1967-08-10
Abstract: 1,175,283. Producing cast iron. PENZENSKY KOMPRESSORNY ZAVOD. Aug. 10, 1967, No.36687/67. Heading C7D. In the production of fine-grained iron castings the molten metal is super-heated and saturated with oxidic iron compounds by feeding in iron ore and/or scale and/or an oxygen-containing gas, the super-heated metal containing more than 3% of silicon, and is then cast. Melting and superheating of the metal may be carried out in an oxidizing atmosphere, preferably in a gas cupola, and oxidic iron compounds may be blown into the bath with an oxidizing gas. If necessary, silicon may be added to the super-heated bath as ferrosilicon.
Patent GB-1113591-A (GB)
Title: Improvements in plastics components embodying one or more inserts
Inventor: CHAMBERS RICHARD MICHAEL
IPC: F16B37/12
Filed: 1963-09-18
Abstract: 1,113,591. Mounting terminal posts. D. & E. PLASTIC COMPONENTS Ltd. 16 Dec.. 1964 [18 Sept., 1963], No. 36723/63. Heading H2E. [Also in Divisions B5 and F2] A plastics fastener component of use particularly for electrical purposes comprises a part 1 moulded in phenolic resin around a nylon insert 2 which is yieldable to minimize cracking of the part 1 on shrinkage of the latter, and is of a melting-point higher than the temperature reached by the part 1 during the moulding operation. The insert may be knurled externally to improve the bonding and may be internally threaded to receive a screw. The device may also be provided with an insert having a threaded projection 5 to receive a nut.
Patent GB-868442-A (GB)
Title: Improvements in or relating to electric crucible furnaces
IPC: H05B3/62
Filed: 1959-10-29
Abstract: 868,442. Electric resistance furnaces. KANTHAL A.B. Oct. 29, 1959 [Dec. 3, 1958], No. 36783/59. Class 39(3). An electric furnace, particularly intended for operation at high temperatures, includes hairpin-shaped resistor elements 17 comprising molybdenum disilicide which depend vertically through the roof of the furnace with their two terminals uppermost, arranged around a crucible 14 placed in a chamber in the furnace, so that the crucible is heated by radiation from the resistor elements and the elements are separately replaceable from the exterior of the furnace roof. As shown, the elements 17 are arranged approximately radially between radial ribs 18 which project inwardly from the furnace wall. Transverse insulating cylinders 20, provided in recesses 19 in the ribs 18, assist in projecting the elements 17 against mechanical damage and support them when the furnace is tipped. The central portion 11A of the bottom of the furnace is downwardly removable and is secured by means of a locking device 12, a seal in the form of a water trap 13 being provided. The terminals of the elements 17 are arranged in a separate casing 21 to which a source of compressed air may be connected to prevent leakage through the furnace roof.
Patent GB-803786-A (GB)
Title: Means for the grid control of a converter
Inventor: ENGSTROEM GUNNAR PER
IPC: H02M1/04
Filed: 1955-12-29
Abstract: 803,786. Converting. ALLMANNA SVENSKA ELEKTRISKA A.B. Dec. 29, 1955, No. 37211/55. Class 38 (2). A polyphase converter 16 has floating grids 15 so energized that the grid of each non- firing anode remains negative relative to the grid of the firing anode, except that when it is to fire it receives a sudden positive rise in voltage. Suitable grid voltages are derived through transformer 12 from a mesh connection of three self-excited transductors 1, 2, 3, each in series with a resistor 4, 5, 6. This mesh connection is energized from a three-phase supply 7, the supply to the delta connected primary winding of grid transformer 12 being taken from the junctions of transductors and resistors supplied from the same phase. The phase of the sudden changes in grid voltage is changed by varying the current through series connected transductor control windings 18. For a six-phase converter the grid transformer secondary windings may comprise two independent three-phase windings 13, 14 for a converter having groups of anodes supplied from transformer winding groups connected through an interphase transformer, or a sixphase fork winding, Fig. 2 (not shown). The resistance voltage drop in the transductors may be compensated by deriving the grid transformer input voltage from autotransformers connected across resistors 4, 5, 6, Fig. 3 (not shown). An arrangement for a three-anode converter is described, Fig. 4 (not shown). Fig. 7 shows an arrangement of three transductors each comprising two cores having four windings 58, 59, 60, 61. Power windings 58 are connected in series with rectifiers 62, 63 for self-excitation, and with windings 59, 60 on the other transductors. Greater current in one transductor raises the currents in the other transductors through these windings. The control windings 61 are all in series. "When the anode grids are in two groups controlling anodes, supplied from transformer secondary winding groups connected through an interphase transformer, balance between groups may be obtained by the control windings on one core of each transductor of each group being connected in series. The four groups so formed are connected as a bridge, the diagonals of which are supplied with control current and balancing current from unbalance between the two converter groups, Fig. 8 (not shown). The steepness of the change of voltage may be increased by adding to the resistor voltage, a voltage derived from the secondary winding 79 of a transformer 78 connected in series with resistor 76, and transductor 77, Fig. 9.
Patent GB-995202-A (GB)
Title: Improvements in or relating to pressure fluid rams
Inventor: WALSH DONALD THOMAS
IPC: E21D23/00
Filed: 1962-10-02
Abstract: 995,202. Hydraulic rams. GULLICK Ltd. Oct. 2, 1963 [Oct. 2, 1962], No. 37217/62. Heading F1P. [Also in Division B8] A thrust bar 12 secured to an hydraulic ram piston 11 and of relatively small cross-sectional area is constructed of high tensile steel housing a yield stress of about 60 tons per square inch thus allowing appreciable deformation of the bar within the elastic limit. The bar extends through a block 15, seal 24 and gland 16 at one end of the cylinder 10; the other end being provided with a manually operated control valve 14. The ram is suitable for advancing a mine conveyer.
Patent GB-1147687-A (GB)
Title: Improvements relating to the manufacture of low-porosity dead-burnt magnesia
Inventor: CLAPP LEONARD STANLEY
IPC: C01F5/08
Filed: 1966-08-19
Abstract: 1,147,687. Dead-burnt magnesia. MIFALEI YAM HAMELAH BM. 17 Aug., 1967 [19 Aug., 1966], No. 37319/66. Addition to 1,107,172. Heading C1A. Low porosity dead-burnt magnesia (periclase) is manufactured by a process characterized by heating a magnesium hydroxide paste to reduce the free water content to at most 12¢% by weight of the paste, without appreciable decomposition of the Mg(OH) 2 , and thereafter shaping, the free water content being 2¢-12¢% wt., under pressure into compacted bodies which are fired in three stages. It is preferred that the free water content of the paste when shaped is 5-10% by weight. The third firing stage is preferably effected at 1600‹ C. or above.
Patent GB-1505004-A (GB)
Title: Wire coiling machine
IPC: B21F3/04
Filed: 1976-09-09
Abstract: 1505004 Coiling wire HARTWELL CORP 9 Sept 1976 [2 Oct 1975] 37335/76 Heading B3E A wire coiling machine comprises a support for a U-shaped wire blank including an end support for the base of the U and two side supports for the arms of the U and having a bore tangential to a supported arm, a mandrel axially movable into and out of the bore, and a head rotatable about the mandrel to coil the arm about the mandrel. The apparatus described forms equal coils of opposite hands in the two arms, as in Fig. 7, but provision may be made for coiling one arm only, for coiling unequal coils in the two arms, for coiling in different positions in the two arms, for winding one or both coils in the opposite hand, or for coiling at two positions in each arm. In Fig. 3 and 5, a base 1 supports a pedestal 49 having a channel 44 in which the base of the wire blank is received, together with the portions of the arms nearest the base. The arms emerge from the channel at bore 43, and the free ends of the arms are initially located in notch 45. Each of two opposed coiling heads 35 is mounted on sleeve 33 supported for axial and rotary movement within a housing 18, being urged towards the other head by spring 38. The head is rotated by pinion 34 driven by rack 19 through layshaft 28. The mandrel 36 is secured to the housing. Each housing is mounted on a baseplate 4, the two base-plates being urged together by springs 17, and moved apart or together by jack-actuated wedge 7. In operation, with a blank mounted on pedestal 39, wedge 7 is withdrawn so that the mandrels enter bore 43. The heads are then rotated by racks 19 to effect coiling, until the racks operate limit switches, whereupon wedge 7 moves the housings 18 apart until switch 53 is operated.
Patent GB-1362993-A (GB)
Title: Manufacture of optical elements
IPC: B24B13/00
Filed: 1971-08-09
Abstract: 1362993 Optical elements MULLARD Ltd 9 Aug 1971 37352/71 Heading C1M [Also in Division B3] An optical element is produced by supporting a glass blank B above a mould M with a surface S, the surface S having a profile which is a negative of a desired optical profile Bg and is a magnification thereof, and filling the space between with resin R which shrinks on curing to deform the blank whose outer surface Bs is then ground flat so that on releasing the blank, this outer surface Bs assumes the desired profile Bg. The former M may be metal, and the resin may be contained by sliding member SL. The preferred resins are epoxy resins which may shrink on curing by about 3%.