baber/WOPTO huggingface dataset:
Patent GB-1469882-A (GB)
Title: Electrical machine
IPC: H02K3/28
Filed: 1974-03-19
Abstract: 1469882 Dynamoelectric machine windings SIEMENS AG 19 March 1974 [19 March 1973] 12207/74 Heading H2A A machine has a three-phase, four-layer stator winding which comprises two two-layer, threephase, six-coil group winding sections arranged above one another in the stator slots, one of the two two-layer winding sections being phase displaced in relation to the other by an angle which differs from the pole pitch by at least one slot pitch. Each three-phase, six-coil group winding section has, for each pole-pair, a set of six adjacent coil groups of different phase, and each of three of the coil groups in the set is interconnected in reverse with that one of the other three of the coil groups in that set which has the opposite phase, and these two coil groups are associated with a respective one of the three phases of the winding. In the four-pole arrangement shown, a two-layer inner winding section 1 has for each phase (only one shown), a five-coil group a<SP>1</SP> and a six-coil group b<SP>1</SP> for each pole-pair, the groups being connected in reverse. An outer winding section 2 likewise has for each phase and for each pole-pair a group a<SP>11</SP> and a group b<SP>11</SP>, also connected in reverse, and the coil groups of the two sections 1, 2 are interconnected as in Fig. la. The sections 1, 2 are phase displaced by 2À5 slot pitches in the arrangement shown, but in Figs. 3, 4, 5 (not shown) the displacements are respectively 2À0, 3À0 and 3À5 slot pitches. Chorded coils are used.
Patent GB-300183-A (GB)
Title: Improvements in or relating to light-sensitive electric devices
IPC: H01L31/08
Filed: 1927-05-07
Abstract: 300,183. Baird, J. L., and Baird Television Development Co., Ltd. May 7, 1927. Light - sensitive cells. - A light - sensitive cell employing selenium, thallium sulphide or the like is so constructed as to minimize loss of light through reflection and tn secure that the changes of resistance due to change of temperature and irradiation respectively y shall act in the same sense. In order to eliminate loss of light by reflection the selenium forms a thin coating on the inside of a chamber 21 which is closed except for the window 22. Leading-in wires 23, 24, are connected to diametrically opposite points in the film. Alternatively a chamber similar in shape to that shown in Fig. 1 may be made of metal, coated internally with selenium, and filled with a transparent electrically conducting fluid, the window 22 being closed by transparent material. One electrode is immersed in the fluid and the other is constituted by the casing. If the mean temperature of the film be suitably chosen, the change of resistance with temperature is added to the electro-optical change of resistance when the film is exposed to light. In order, therefore, that the working temperature may be regulated the cell may be enclosed in a chamber surrounded by a waterjacket in which a heating coil may be enclosed (Fig. 3, not shown). The temperature of the amplifiers and circuit may be controlled, for instance by enclosure in a thermostatic chamber, for the purpose of eliminating parasitic currents. According to the Provisional Specification the cell may be enclosed in a vacuum or an atmosphere of inert gas.
Patent GB-643926-A (GB)
Title: Improvements in nickel plating
IPC: C25D17/10
Filed: 1948-05-05
Abstract: In the electro-deposition of nickel, the anode consists of a cathode sheet of electrolytic nickel the metallographic structure of which has been modified to an equi-axed grain structure by treatment of the sheet at a temperature in excess of approximately 1250 DEG F, preferably at a temperature of approximately 2000 DEG F for about an hour.  The heating may be conducted in a suitable furnace such as a salt bath or muffle type.  U.S.A. Specification 2,358,995 is referred to.
Patent GB-1416644-A (GB)
Title: Electrical device incorporating a film of a n
IPC: H01L21/318
Filed: 1973-03-15
Abstract: 1416644 Non-volatile memory devices INTERNATIONAL BUSINESS MACHINE CORP 15 March 1973 [5 June 1972] 12472/73 Heading H1K A multi-state switch with non-volatile memory comprises a substrate of a refractory metal, e.g. tungsten, molybdenum, niobium or tantalum, a film of aluminium nitride formed thereon by sputtering after outgassing the substrate for at least 10 minutes at 350- 1500 C. at a pressure of from 2 Î 10<SP>-7</SP> to 2 Î 10<SP>-8</SP> Torr and an electrode on the film. Typically when using a 111 orientated mono- or polycrystalline tungsten or molybdenum substrate a series of presputtering steps in argon or nitrogen is performed prior to reactively sputtering aluminium in pure nitrogen at 1100 C. to form a film 0À2-10 Á thick. The film is electroded by alloying P- or N-type silicon to it at 1420-1800 C., or aluminium-silicon at above 576 C., or by sputtering, evaporating, or alloying on aluminium at 660-1800 C. A forming voltage of either polarity is then applied to realisethe switching characteristic. Switching from a high to a low impedance condition occurs above a threshold voltage with the electrode positive and reversion takes place when a threshold current of opposite polarity is exceeded. The ratio high/low impedance may be as high as 10,000 : 1 at very low switching frequencies but falls to about 20 : 1 at 100 kc./s. At a given frequency the values of the high and low impedances and the switching thresholds are determined by the amplitude of the voltages applied but switching is substantially independent of temperature in the range 4-500 K. The device finds use as a computer memory element,' high speed pulse or harmonic generator or electrically resettable circuit breaker.
Patent GB-611197-A (GB)
Title: Improved apparatus for drying grass or other vegetable matter
IPC: F26B25/00
Filed: 1946-04-25
Abstract: 611,197. Drying grass or like material. TEMPLEWOOD ENGINEERING CO., Ltd., and BERTELLI, A. C. April 25, 1946, No. 12483. [Class 34(ii)] [Also in Group XXX] The material is led to the travelling perforated con veyer 6 by a combined ele vator and tedder comprising an inclined ramp 26, a series of spaced rods 28 each having a number of depending tine: 29, and chute 27. The lower ends of rods 28 are connected to phasedisplaced cranks on multithrow crankshaft 30, their upper ends guided at 31 for combined rocking and rectilinear sliding motion. Anti-clockwise rotation of crankshaft by chain 32 causes tines 29 to progressively elevate and evenly spread the material. Associated therewith is a combined loader and leveller comprising inclined endless conveyer 33 and a similar arrangement of rods and tines driven clockwise by crankshaft 37 which levels the depth of the material in transit. Material carried by perforated conveyers 5 and 6, driven by motor 11 and associated gears and chains, is dried thereon by hot air or gases forced through by blower 2, is then received at 41, and deposited to cross-conveyer 43.
Patent GB-1469648-A (GB)
Title: Liquid flow straightening device
IPC: F15D1/02
Filed: 1974-03-21
Abstract: 1469648 Liquid flow straightening device for pipe-lines TOKICO Ltd 21 March 1974 [23 March 1973 (2)] 12533/74 Heading F2P A device for straightening the flow of liquids in a pipe-line comprises a hollow cylindrical main structure 21 and flow straightening members therewithin and comprising walls dividing the main structure into a plurality of through passageways parallel to the centre line of the structure the walls being adapted so that frictional resistance due to skin friction is less in the vicinity of the centre line than in other parts of the structure the said resistance increasing progressively with increasing distance from the centre line. In the embodiment of Fig. 2A the passageways are formed by tubes 23, 24, 25 of decreasing diameters but of equal lengths. In Figs. 4A, 4B the tubes are of the same diameters but of decreasing length towards the centre. In Fig. 3A the passageways are formed by plates 33, 34 spaced apart by decreasing distances away from the centre line of the structure but are of equal lengths. In Figs. 5A, 5B (not shown) the plates are spaced at equal distance apart but the passageways decrease in length towards the centre and in Figs. 6A, 6B (not shown) and 7A, 7B (not shown) the passageways vary both in crosssection and in length.
Patent GB-542816-A (GB)
Title: Improvements in emergency hatches and man-hole covers
IPC: B64C35/00
Filed: 1940-08-06
Abstract: 542,816. Hatch-covers. SHORT BROS., (ROCHESTER & BEDFORD), Ltd., and FLAXMAN, R. E. Aug. 6, 1940, No. 12637. [Class 113 (i)] A hatch or man-hole cover for application to the hull, float or other decked surface of relatively light structure in a flying boat or like vessel is constructed with a lip 9 projecting over the border of the frame 4 defining the hatch aperture and with an adjacent depending flange 10 extending inwardly into a trough 11 containing grease, tallow or other lute material 111 so as to form an air-tight seal when the hatch is closed. The inner edge of the frame 4 may be offset so that the lip 9 forms a flush surface therewith, while the flange 10 may have the bulbous rim 101. The hatch cover preferably comprises outer and inner plates 6, 7 braced apart by transverse beams 8. Specification 12739/08, [Class 133], is referred to.
Patent GB-1112833-A (GB)
Title: The mounting of barrier layer rectifier cells
Inventor: RAYMOND FREDERICK JOHN
IPC: H01L25/03
Filed: 1967-03-17
Abstract: 1,112,833. Carding electrical components. STANDARD TELEPHONES & CABLES Ltd. 17 March, 1967, No. 12674/67. Heading B8C. [Also in Divisions B3 and H1] Barrier layer rectifier cells are retained in individual apertures in sheet material so that their orientation is known. The sheet material may be insulating and may be merely a temporary storage medium for the cells or may constitute a mounting in which the cells are used. The sheet material may be metallic and act as one electrode for each cell-in this case the rectifying side of each cell protrudes from the sheet to avoid short-circuiting. The individual cells are punched from a large body and may be forced by the punch into simultaneously formed apertures in the sheet material. Instead the sheet may contain preformed apertures and may either be used as a die during punching out of the individual cells or may have slightly oversize apertures in which the cells are retained by metal strips acting as electrode connections. When cells are mounted in insulating strips they may be interconnected by metal foil, by sprayed metal tracks, or by conductive paint. Other components such as resistors may form part of an interconnection. The sheet may be a printed circuit board.
Patent GB-595164-A (GB)
Title: Improvements in and relating to buttons
IPC: A44B1/20
Filed: 1945-05-21
Abstract: 595,164. Buttons. EVELEIGH, E. F. May 21, 1945, No. 12683. [Class 43] A button, which prevents chafing of and provides a large area for the thread, is in the form of a doubleflanged pulley, one flange A being inserted into the button-hole, and the other B, having holes C and recesses 'E for the thread, being sewn to the material. The flange B may have projections or webs F at the back for strengthening purposes. The button may be constructed as an integral unit or in two halves with separately formed flanges joined together, e.g., by a rivet or by providing a hollow hub on each flange one hub being a free-fit into the other. In a modification the fastening flange B is formed with a continuous recess having holes for the thread.
Patent GB-873513-A (GB)
Title: Improvements in or relating to transducers
IPC: H04R1/22
Filed: 1957-07-30
Abstract: 873,513. Circuits for loud-speakers. BOSE, A. G. July 30, 1957 [Aug. 6, 1956], No. 12712/61. Divided out of 873,511. Class 40 (4). An array of closely-spaced loud-speakers is driven over a compensation network which extends their range by providing a boost at low frequencies. The network may also provide a boost to extend the range at high frequencies. The loud-speakers are distributed over the surface of a spherical surface as described in Specification 873,511. Fig. 8 shows a circuit that passes the audio range with boost at high and low frequencies. Valves V1 and V2 provide the low frequency boost by virtue of capacitors 50 shunted by resistors 51 in the anode circuits which present high impedance at low frequency. Valves V3 and V4 provide the high frequency boost by virtue of cathode circuits containing capacitors 55 shunted by resistors 56 presenting a low impedance or high frequency. The inter-valve coupling of capacitor 63 shunted by resistor 64 increases the high frequency boost. The output of the network may be applied to a cathode follower before being applied to preamplifier and power amplifier stages. The loud-speakers are connected in phase and in series or parallel or in seriesparallel. In place of a separate network compensation may be integrated in the design of the preamplifier and/or the power amplifier.
Patent GB-806996-A (GB)
Title: Variable frequency oscillators
IPC: H03B23/00
Filed: 1957-04-13
Abstract: 806,996. Reactance valve circuits; thermionic discharge tube generating circuits. STANDARD TELEPHONES & CABLES Ltd. April 18, 1957 [April 25, 1956], No. 12719/57. Classes 40 (5) and 40 (6). In a variable frequency, e.g. frequency sweep oscillator, a tapping of the tuned circuit 25, 26, 27, 28 is coupled to the cathode of a grounded grid oscillator valve 6, through the high impedance of a cathode follower 5, one end of the tuned circuit being earthed. at oscillator frequency by a capacitor 29, and the other end connected to the anode of the valve 6 through a large resistance 38. Also a capacitor 32 connects the cathode and grid of the cathode follower 5 so that the oscillator frequency is equally applied to the cathode and grid. The tuned circuit is thus only lightly loaded and of high Q. A reactance tube 2 has its anode and cathode connected across the tuned circuit and is energized by a two-stage 90 degrees phaseshift network 42-45 connected to the cathode circuit of the oscillator valve. A gaseous tube 4 regulates the voltage between the cathode circuit and anode and screen grid of the reactance tube, and the anode voltage of oscillator tube 6, and via a voltage divider 22, 23, high resistances 24, 31 and the cathode follower, the cathode voltage of the oscillator tube 6 giving a constant low anode/cathode voltage of oscillator tube 6 of, e.g., 15 volts. A potentiometer 8 adjusts the magnitude of the reactance tube input, and a potentiometer 18, 17 and/or anode resistance 13, 14 the rest frequency of the reactance controlled oscillator. A cathode circuit resistance 20 of the reactance tube provides negative feedback stabilizing it. In a modification the cathode circuit of cathode follower tube 5 is a series-connected triode tube with negative feedback applied to its grid from the anode of tube 5, giving a voltage amplification factor as before of unity. Also the tube 6 is a pentode so that resistor 38 may be omitted. The modulating input may be a sawtooth or triangular wave.
Patent GB-159110-A (GB)
Title: Improvements in composite timber railway ties
IPC: E01B3/10
Filed: 1920-05-08
Abstract: 159,110. Revert, A. May 8, 1920. Sleepers, wood; chair plates.- Sleepers consist of narrow longitudinal wooden sections 10, arranged parallel and on edge and united by oblique dowels 12, the individual sections being first treated with pitch or tar. The width may be increased at the rail seats by short sections 11. Adjacent dowels are oppositely inclined, and are staggered in a vertical plane. The rail seats comprise plates 13 having end flanges 15, and prongs or projections 14 which enter the individual sections.
Patent GB-237682-A (GB)
Title: Improvements in trunks or like receptacles
IPC: A45C5/03
Filed: 1924-05-26
Abstract: 237,682. Stevens, G. L. May 26, 1924. Contents, facilitating access to.-A trunk, suit case, &c. of the kind having a tray supported upon a ledge within the body portion is furnished with means, operable from outside the lid, for causing the tray to be lifted within the lid when the latter is opened. In the form shown in Fig. 2, straps 5 secured to the rear wall 7 of the lid pass under the tray and over the front edge of the lid, terminating in a ring or rings 8 adapted to be engaged over one or more catches 9 disposed on the top surface of the lid. According to the construction shown in Fig. 7, resilient vertically adjustable catches 14 mounted within the end parts of the lid have inturned lower ends 17 adapted to engage under parts 18 secured to the ends of the tray. The catches are connected to. and may be released from the tray by pulling upon, finger-pieces 23 disposed outside the lid ends. Fig. 13 shows a form in which bolts 26. slidable through slots in the ends of the lid, are adapted to engage serrated or toothed plates 28 on the tray. The bolts are attached to resilient finger-pieces 29 secured to the lid ends; pulling out the finger-pieces releases the bolts and frees the tray. The inner ends of the bolts may be formed with detents adapted to be held in engagement with the plates 28 by the aid of springs.
Patent GB-1076384-A (GB)
Title: Laminated golf club shaft and method of forming same
IPC: A63B53/10
Filed: 1965-03-26
Abstract: 1,076,384. Golf clubs. H. G. CRUIKSHANK FAIRWEATHER. March 26, 1965, No. 12923/65. Heading A6D. [Also in Division B5] A laminated golf club shaft comprises a layer of fabric and a layer of sheet metal bonded together and wound on a mandreL The shaft is preferably formed by superimposing a sheet of steel between .001 and .004 inches thick on a wider sheet of glass fabric which has been impregnated with epoxy or phenolic resin, winding the sheets on a mandrel, curing the resin, and finally withdrawing the mandrel and polishing the shaft. Thin sheets of brass or aluminium are mentioned as alternatives to steel.
Patent GB-550114-A (GB)
Title: Improvements in or relating to the insulation of electric conductors
IPC: H01B11/18
Filed: 1941-10-07
Abstract: 550,114. Electric conductors. ZUCKER, B. Oct. 7, 1941, No. 12944. [Class 36] An electric conductor is insulated by means of beads 10 in the form of thimbles with apertures 13 in the end wall from which extends integrally a bush 14 with an inwardly tapering through-way, the bush preferably being reinforced by webs extending between it and the inner surface of the thimble. The thimbles are preferably made from a synthetic resin or like thermo-plastic or thermo-setting composition, preferably polystyrene, and may have domeshaped end walls and cylindrical skirts, and the skirts may have holes or cut-away parts. Each end wall may have more than one aperture and associated bush. Conductors are threaded through a series of the thimbles, and a single- or multilayer covering of conducting and/or non-conducting material, preferably braided, may surround the thimbles, the end of such a covering being held between a clamping ring 19, Fig. 4, and a reduced skirt' 18 of the end thimble. A copper &c. tube may form the covering. Two or more cables as above may be arranged parallel to each other, or twisted one upon the other, and held together as by one or more outer coverings.
Patent GB-1007781-A (GB)
Title: Mixtures of substances, print pastes, printing compositions and treatment liquors having a reducing action
Inventor: ZIRKER GUENTER
IPC: D06P5/15
Filed: 1963-04-02
Abstract: The invention comprises reducing compositions for use in dyeing or printing with vat or sulphur dyes or in bleaching processes said composition comprising a derivature of an alkanesulfinic acid as reducing agent and preferably having 1-4 carbon atoms, and as a redon catalyst a chelate complex of a transition metal having a plurality of valency states of which the lowest in the complex is not the most stable, the concentration of free ions of the transition metal in the compositions being so low that the solubility products of the corresponding metal hydroxides and sulphide are not reached.  The term transition metal includes those elements of atomic numbers 21-30, 39-48, 57-80 and 89-102 but iron, cobalt and nickel are the preferred metals.  Alkali metal, alkaline earth metal or ammonium salts of alkanesulfinic acids are used especially sodium, potassium, calcium, barium and ammonium salts, and are of general formula, <FORM:1007781/D1-D2/1> in which Q is a hydroxyl group or a group having the formula, <FORM:1007781/D1-D2/2> in which A is a hydrogen atom or low molecular weight alkyl group which may be substituted by a group of general formula, <FORM:1007781/D1-D2/3> in which D is a group having the general formula, <FORM:1007781/D1-D2/4> In the above formulae X is 0, 1 or 2, Y is 1, 2, or 3, (X + Y) is 3, p is 0, 1 or 2, g is 0, 1 or 2, (p + g) is 2, E1 and G1 are separately alkylene radicals which together contain not more than 3 carbon atoms, n is 0 or 1, m is 0 or 1 and 2 is a cation.  Many chelating agents are specified and include 1, 2 dioximes, the Schiff bases of aromatic or aliphatic 1, 3 hydroxy-azo compounds and chelating agents containing the phthalocyamine or porphyrin skeleton.  The reducing compositions give higher rates of reduction at about 100 DEG C. and are generally used in alkali solutions.  In examples, rayon, cotton cloth, and secondary cellulose acetate are printed using the above reducing compositions, other materials referred to are silk, synthetic polamides, and polyester fabrics.  The reducing agent and redon catalyst may be applied together or separately in any order. Specifications 829,177, 829,936, 877,940 and 881,487 are referred to.
Patent GB-779844-A (GB)
Title: Device for homogenising powdery or granular material
IPC: B01F7/30
Filed: 1955-05-04
Abstract: 779,844. Mixing-machines. NAUTA, J. E May 4, 1955 [May 7, 1954], No. 12955/55. Class 86 A mixing device comprises a conical vessel 1 having a screw conveyer 6 which rotates about its own axis 7 and about the axis 2 of the vessel 1, and a disc 14, provided with pins 15, carried on a shaft 11 which extends through the wall 1 of the vessel and is driven by an electric motor 12. In a modification which permits liquid to be supplied to the vessel through the centre of the disc, a basin shaped disc 34 having projections 35 is secured to a hollow shaft 29 which is rotatably mounted in a structure 23 and driven through pulleys 27, 30 by a motor 26. A tube 36 extends through the shaft 29 and carries a disc 40 which is spring- pressed into engagement with a disc 33 on the end of the shaft 29. The end of the tube 36 is closed by a plug 39 and liquid supplied through a main 38 flows through a hole 41 into the space between the discs 33, 40 at a pressure determined by the compression of a spring by rotation of a handwheel 45. For the addition of a powdery material, the device is modified as shown in Fig. 3, in which material supplied to an inlet 52 is carried by a screw conveyer 54 to the centre of a rotating disc 59. A spring-pressed valve comprises a central bar 61 having head 69 secured thereto.
Patent GB-1209422-A (GB)
Title: Agitator
Inventor: TANAKA MASATAMI
IPC: C02F3/16
Filed: 1969-03-12
Abstract: 1,209,422. Agitating and aerating liquids. KYOWA HAKKO KOGYO CO. Ltd. 12 March, 1969, No. 12978/69. Heading B1C. An impeller for immersion in a liquid has upper and lower discs 2, 1, radial blades 3, 4 'between them and beneath the lower disc, and a shaft 6 which passes through an opening in the upper disc and is attached to the lower. The blades may be flat, curved or corrugated, and the blades 3 may extend into the central opening where they may be tapered. In operation the impeller is placed in the lower part of a tank above an air diffuser or sparger.