baber/WOPTO huggingface dataset:
Patent GB-1444811-A (GB)
Title: Differential amplifier circuit including a current-cancelling circuit
IPC: H03F1/56
Filed: 1973-10-05
Abstract: 1444811 Transistor circuits TEXAS INSTRUMENTS Inc 5 Oct 1973 [24 Nov 1972] 46680/73 Heading H3T A biasing arrangement of a transistor T1, forming part of a differential amplifier, Fig. 2, which gives high imput impedance comprises a second similar transistor T5 in cascade connection with the first and with its base connected to that of a third transistor T8 of opposite conductivity type. The transistor T8 has two collectors of equal area, the one C 1  connected to the base and the other C 2  providing base bias for the transistor T1. In a differential circuit the transistor T1, Fig. 4, and a corresponding second transistor have a constant current source CS 2  as common emitter impedance, while their collector supply is derived from a second constant current source SC 1  and a diode chain D2-D5. In this arrangement, a further transistor T9 is interposed in the connection between the collector C 1  and base of the transistor T8, and a diode D1 is connected in the connection between the collector C 2  and the base of the transistor T1. The arrangement provides zero static voltage drop between base and collector in each of the transistors T1, T5. In a modification, the double collector transistor is replaced by two like transistors with their bases and also emitters connected together, the collector of one being returned to its base (Fig. 5, not shown).
Patent GB-1237386-A (GB)
Title: Electrographic receiving material
Inventor: GRAMZA EUGENE PATRICK
IPC: G03G5/02
Filed: 1968-10-03
Abstract: 1,237,386. Electrographic image-receiving sheets. EASTMAN KODAK CO. 3 Oct., 1968 [9 Oct., 1967], No. 46896/68. Heading B2E. [Also in Division G2] An electrographic image-receiving element comprises a support having coated thereon a layer 1 to 10Á thick of an insulating binder and having embedded in the layer and protruding from the surface thereof randomly distributed filler particles of diameter 2 to 50Á. The protruding particles are used to space 12 the latent-image bearing member 11 away from the element. On application of a potential across the member 11 and the element, the electrostatic image pattern is transferred to the element. The support 14 may be paper coated on both sides with a clay subbing and sized on one side with polyvinylbenzyl-ammonium chloride or the support may be glass, cellulose acetate, polyethylene terephthalate, polystyrene or polyethylene-coated paper. The polymeric binder 15 is preferably a copolymer of vinyl butyral, vinyl acetate and vinyl alcohol but other polymers are specified. The binder layer contains coloured or white pigment 16 such as BaSO 4 , ZnO, TiO 2 , ZnCO 3 , CaCO 3  or bentonite. The protruding particles 13 may be BaSO 4 , ZnO, TiO 2 , ZnCO 3 , CaCO 3 , polystyrene, or glass beads. The protruding particles can be spherical, conical, cylindrical or polyhedral. The prior art discloses receiving elements with no protruding particles or with spacing particles dusted on the surface.
Patent GB-1525118-A (GB)
Title: Gas mixing valve
IPC: A61M/
Filed: 1975-11-13
Abstract: 1525118 Valves SJUMEK SJUKVARDSMEKANIK HB 13 Nov 1975 [25 Nov 1974] 46932/75 Heading F2V  A mixing valve for gases comprises separate inlets 1, 2 for each gas, a common outlet for mixed gas and a dispensing device 7 which has a plurality of passages for gas through it and is linearly adjustable such that the number of passages 6 in communication with each inlet can be altered to adjust the mixing ratio. The exits of the passages are closed by a valve member 8 common to all the passages which is biased towards the closed position by a spring (10), Fig. 2 (not shown), and is rockable or pivotable about a bearing surface (9) to uncover all the exits of the passages 6 in response to a predetermined pressure difference between the inlets and outlet. In a modification, Figs. 3-5 (not shown), the dispensing device is formed as a major segment of a rotatable disc with the gas passages opening along an arc on the face of the disc in communication with arc-like inlet chambers; the exits of the passages lie on a straight line along the flattened part of the circumference and are closed by a spring loaded flap.
Patent GB-1060467-A (GB)
Title: Improvements in and relating to resilient solid tyres
IPC: B60C7/10
Filed: 1963-11-28
Abstract: 1,060,467. Solid tyres. GEORGE ANGUS & CO. Ltd. Nov. 28, 1963 [Nov. 29, 1962], No. 47021/63. Heading B7C. A resilient solid tyre comprises a radially inner annular layer of cellular elastomeric material having the same axial width as a reinforcement of fabric, thread, wire or cord wound therearound, and an outer main body 3 of cellular elastomeric material bonded to the inner layer and of a softer material than the inner layer. The entire radially inner surface of the tyre may be formed by the inner layer (2) (Fig. 2, not shown), or two inner layers 9 and reinforcements 8 may be provided axiallyspaced apart. The tyre may be wholly solid or have axially-extending cavities (7) (Fig. 2, not shown), or have blind cavities 11 circumferentially offset in opposite sidewalls.
Patent GB-1465985-A (GB)
Title: Method of making a centrifuge rotor
IPC: B04B1/18
Filed: 1974-11-04
Abstract: 1465985 Coated centrifuge rotor F L SMIDTH & CO HS 4 Nov 1974 [20 Nov 1973] 47532/74 Headings B2E and B2P A method of making a centrifuge rotor consisting of an inner body made of a material resistant to the action of a fluid to be centrifuged, e.g. plastics material, and providing an inner surface which will in use contact the fluid to be centrifuged, and an outer shell encasing the inner body, e.g. adhesive bonded piano wires or carbon comprises rotating the outer shell while the material of the inner body in a fluent state is cast in the shell, the rotation continuing until the inner body material has set. The rotor consists of upper and lower parts 1, 2 driven by shaft 3 through nut 4 and assembled by nut 5. The upper part consists of shell casing 6, e.g. of steel, and an inner body 7 of plastics material. Lower part 2 consists of shell casing 8 and an inner body. Ejection slot 10 may be opened for cleaning the rotor and is sealed by cup shaped piston 11 mounted on lower part 2. Piston 11 has sealing ring 12 urged upwards by springs 13 to engage upper part 1. Piston 12 is lowered to open slot 10 by supplying control liquid into chamber 14. The rotor also has vanes 16 between partition plates 17, 18. Liquid to be centrifuged enters the rotor via pipe 19 and bores 20 past plate 18 into chamber 21. The lighter phase leaves through bores 22 after passing between vanes 16 and the heavier phase is ejected via bores 23.
Patent GB-1064617-A (GB)
Title: Apparatus for tapping metal from furnaces
IPC: F27D27/00
Filed: 1965-11-10
Abstract: 1,064,617. Discharging molten metal; ladles. GES. FUR HUTTENWERKSANLAGEN, m.b.H., and FICHTEL & SACHS A.G. Nov. 10, 1965 [July 8, 1965], No. 47691/65. Heading F4B. Metal from a furnace is discharged to a well 8 at one end of a launder 7 and supplied to a ladle 1 having a cover 3 with a slot 5 to co-operate with the launder outlet when the ladle is tipped to discharge metal from outlet 15. The launder 7 may carry a shield 16 to close parts of the slot 5 not receiving metal. Two continuously operating cupoli furnaces may supply a single launder feeding a shaking ladle.
Patent GB-1525385-A (GB)
Title: Electrolytes
IPC: H01M12/02
Filed: 1974-11-05
Abstract: 1525385 KOH electrolyte with silicate ions SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ BV 3 Nov 1975 [5 Nov 1974] 47797/74 Addition to 1411911 Heading H1B A method of forming an electrochemical system comprising placing a zinc electrode in contact with an aqueous alkaline electrolyte consisting of an aqueous solution containing 2 to 4À75 mol.litre<SP>-1</SP> of potassium hydroxide, 9 to 36 gram ions.litre<SP>-1</SP> of silicate ions and an inert water soluble additive which reduces the vapour pressure of the electrolyte. The additive may be an inorganic salt, e.g. potassium fluoride or an organic compound, e.g. ethylene glycol in an amount of 2 to 5 moles litre<SP>-1</SP> and the electrolyte may contain a mixture of additives.
Patent GB-1032400-A (GB)
Title: Improvements in or relating to livestock drinking appliances
IPC: A01K7/02
Filed: 1963-12-04
Abstract: 1,032,400. Animal drinking appliances. L. G. ELT and J. H. ELT. March 1, 1965 [Dec. 4, 1963], No. 47965/63. Heading A1M. A livestock drinking appliance comprises an elongated trough 1 at one end of which is mounted a valve 2 connected to a supply of drinking liquid and provided with a pivoted actuating member 3 urged by spring 4 to the open-position for the valve, the valve 2 being closed when the weight of the trough and contents exceeds the loading of the spring 4. The trough is suspended from independent overhead anchorages by means of two ropes, one rope being attached to the trough remote from the valve and the other rope 7 being connected to the member 3. Adjustment of the loading spring 4 is effected by nut 12 and screw 13. A four-bladed rotatable spinner 14 may be supported over the trough to prevent birds perching over the trough. Loop elements 25 co-operate with the ropes to restrain the trough against swaying. The height of suspension of the trough and the height of the spinner above the trough are adjustable.
Patent GB-1417303-A (GB)
Title: Gas laser with discharge conditioning using ultraviolet photons generated in high density preliminary discharge
IPC: H01S3/0971
Filed: 1973-10-17
Abstract: 1417303 Lasers HUGHES AIRCRAFT CO 17 Oct 1973 [17 Oct 1972] 48291/73 Heading H1C A preliminary electrical discharge with a current density of at least one ampere per cm.<SP>2</SP> is produced in a first region of a gaseous active medium at least one u second before a main electrical discharge is initiated in a second region, the preliminary discharge generating ultraviolet photons which pre-ionize the gas in the second region by producing electron-ion pairs. A suitable gas flowing in direction 212 may be a 1 : 1 : 8 mixture of CO 2 , N 2  and He, or a mixture of H 2  or D 2  with F 2 . The preliminary discharge is obtained by applying a pulse from generator 236 to parallel first electrodes 232 which are spaced from a second electrode 233 in a first gas region 229. The preliminary gas discharge path is orthogonal to main gas discharge path between electrodes 216, 218 in the form of grids permitting photons to pass from region 229 to lasing region 215. Resonator mirrors (not shown) are provided.
Patent GB-1482015-A (GB)
Title: Electrographic substrates their production and use
IPC: G03G5/05
Filed: 1974-11-11
Abstract: 1482015 Electrographic substrates DOW CHEMICAL CO 11 Nov 1974 [14 Nov 1973] 48644/74 Heading C3P A process for preparing an electrographic substrate comprises coating a substrate (e.g. a paper sheet) with a latex comprising: (A) a copolymer of (a) a styrene compound, (b) either (i) a conjugated diene hydrocarbon or (ii) an alkyl ester of acrylic acid or methacrylic acid (the alkyl group having 1-18 carbon atoms), and (c) 0À5-8% by weight of methacrylic acid or maleic acid; and (B) 0-2 parts by weight of pigment per part of the copolymer, and drying the coating to form a continuous film. The diene may contain 4-10 carbon atoms. The pigment may be, e.g. clay, calcium carbonate, titanium dioxide, talc, zinc oxide or barium sulphate. The latex preferably has a solids content of 40-55% by weight, the particles preferably being of size 1300-2500 .
Patent GB-1326883-A (GB)
Title: Temperature regulating means
IPC: H05B1/02
Filed: 1970-10-13
Abstract: 1326883 Automatic control of temperature NOBO FABRIKKER A/S 13 Oct 1970 [20 Oct 1969] 48677/70 Heading G3R Room heating apparatus comprises an element 1 in series with a thermostat switch 2 and an anticipatory heating resistance 3 in series with the thermostat, a thermistor 5 and further resistance 4 being series connected and independent of the action of the thermostat 2. The thermistor has a positive characteristic and is adapted to be heated by the element 1, the resistance 4 is also adapted to supply heat to the thermostat. When the heat output, from element 1 is required to be small, i.e. there is a small difference in temperature between the thermostat setting and the ambient, the total heat provided by the resistance 3 over a plurality of on-off cycles of the switch will be small and the mean temperature of the thermistor 5 will also be small. Consequently a high current will flow in the branch 4, 5 and the resistor 4 will supply a proportionally higher amount of heat in the period to the thermostat switch 2. On high thermostat settings the reverse is true. If the thermistor has a negative characteristic it is connected in parallel with the resistor 4.
Patent GB-1079497-A (GB)
Title: Improvements in and relating to a collet for fixing the inner end of a balance-spring of a timepiece
IPC: G04B18/06
Filed: 1964-12-02
Abstract: 1,079,497. Balance springs. A. CHARPILLOZ. Dec.2, 1964 [Dec.17, 1963], No.48935/64. Heading G3T. A collet for the inner end of a balance spring 18 comprises a cup-shaped member 1 having at least one side wall groove 8 and a split ring 10 rotatably mounted therein. The members 1 and 10 define an annular space 17 which receives the end of the spring 18 with a bent-over end portion located in a split 15. The ring 10 has a slot 16 by which it may be rotated to firstly trap the end of the spring during initial fitting and secondly to adjust the tension of the spring. The bore of the member 1 is stepped.
Patent GB-1025215-A (GB)
Title: Method and apparatus for production of fine glass fibres
Inventor: STEPHENS JOSEPH FRANCIS
IPC: C03B37/04
Filed: 1962-12-31
Abstract: <PICT:1025215/C1/1> <PICT:1025215/C1/2> In a method for manufacturing glass fibres molten glass is forced centrifugally through a number of minute radially extending apertures in the peripheral wall of a hollow rotating rotor and each resulting stream of molten glass is attenuated by a blast of hot gas which has two mutually perpendicular components of velocity both perpendicular to the direction of emergence of the stream from its aperture, one component being in the direction of the rotor.  A cylindrical torque tube 28 with an internally threaded member 31 fixed inside its lower end is rotatably mounted within a cylindrical support casting 20 by ball bearings mounted between the tube 28 and two inwardly extending ring portions 21, 22 of the casting 20.  A hollow rotor 80a, 80b, 80c is screwed into the threaded member 31 of the torque tube 28 and the whole is rotatable at high speed by an electric motor 37.  A cylindrical double-walled cooling-water tube 45 situated within the torque tube 28 is rigidly mounted to the casting 20.  A gas inlet flow line 50 leads into a ring manifold 51.  Four gas flow lines, such as 53a, lead from the manifold 51 into tangential inlet ports 54a, 54b, 54c, 54d of a ring combustion chamber 55 through perforated screens 56a, 56b, 56c, 56d.  The chamber 55 comprises upper, inner, lower and outer rings of refractory material 61, 62, 63, 64 respectively with a continuous ring gap 65.  Annular cavities 66, 68, 72 permit the circulation of cooling water around the chamber 55.  Inner and outer rings 74, 75 are replaceably fixed below the ring gap 65, the width and position of the annular gap between them being adjustable by substituting different sized rings.  A ring 86 is fixed to a cylindrical wall 67 to form a flame shield for the outer surface of the torque tube 28.  A cylindrical shield 73 depends from the outer circumference of the chamber 55.  In use a single stream of molten glass is allowed to fall centrally through the tubes 45, 28 without contacting their walls into a cup-shaped reservoir 84 of the rotor 80 to form a pool from which glass is moved radially outwards under centrifugal force and emerges through perforations in the side wall 80b of the rotor 80 as fine streams which trail behind the side wall 80b.  A mixture of combustion gases is fed to the chamber 55 and swirls around in a circular manner before emerging from the ring gap 65 as a helical curtain of gas whose horizontal component of velocity tends to compensate for the trailing of the streams of glass.  In another embodiment, the outer ring 75 is modified to provide an oxidizing blast.
Patent GB-1195328-A (GB)
Title: Hydraulic Motor Stroke Limiting Means
IPC: E02F9/22
Filed: 1968-10-17
Abstract: 1,195,328. Shovelling machines. MITSUBISHI JUKOGYO K.K. 17 Oct., 1968 [17 Oct., 1967], No. 49264/68. Heading E1F. '[Also in Division F1] Limitation of the stroke of a hydraulic piston and cylinder motor 22 Fig. 2 subject to inertia loads and for oscillating a vertical pillar 15 .linked to the back hoe or shovel of an excavator is effected by a value assembly 29 interposed in lines 24 to 27 connecting a conventional four-way spool value 5 with opposite ends of motor 22 and comprising a out-off valve member 32 Fig. 3 urged by a spring 33 against a cam 23 adjustably secured to the pillar -15 so that when the motor is in its mid-stroke position member 32 is in its open central .position and lines 24, 25 are connected to lines 26, 27 respectively, whereas at a predetermined end of stroke position of actuator 22, cam 23 displaces valve member 32 so as to cut off lines 24, 25 from lines 26, 27, and the assembly 29 also comprises relief valves 39, 41 between value 32 and the actuator 22 wheretey .fluid from the exhaust end of the motor 22 is returned through valve 41 Fig. 4 to the supply end thereby cushioning the motor piston at the end of its stroke. To initiate the return stroke of motor 22 from the position shown in Fig. 4 valve 5 is switched to its other extreme position and with value 32 ':still blocking lines 24 to 27 pressure in line 24 opens a check valve 35 within valve 32 to allow pressure fluid to enter line 26 whilst exhaust fluid in line 27 opens a check valve 37 in valve 32 and gains access to line 25. Check valves 35, 37 remain open until the cam 23 displaces valve 32 to its open central position after which valves 35, 37 close and remain closed, until after completion of the motor stroke they are re-opened to initiate a further stroke. The casing of valve 5 contains three other distributing valves for controlling actuators 9, 10, 11.
Patent GB-1293256-A (GB)
Title: Improvements in or relating to calculating machines
IPC: G06C7/00
Filed: 1970-10-16
Abstract: 1293256 Initiating key for multiplication and division CITIZEN WATCH CO Ltd 16 Oct 1970 [11 Feb 1970] 49297/70 Heading G4B A device for selectively initiating the calculating operations of multiplication and division mechanisms of a calculating machine, comprises a single initiation key 22, and a lever 15 movable into and out of engagement with the key 22, the arrangement being such that the key 22 is always in operative connection with the multiplication mechanism, and the lever 15 is always in operative connection with the division mechanism. As described, a register of a calculating machine comprises a number of wheels 1, each carrying a cam 3 that is co-operable with an associated shiftable lever 4. A rod 8a mounted on a rotatable shaft 9 and common to the shiftable levers 4, carries a projection 8b that is cooperable with a spring-urged rod 10. The rod 10 is constrained for linear movement relative to a fixed part M of the machine, and is normally positioned and held as shown in Fig. 1 by the projection 8b and a strong spring 12. Division.-For division, the components of the device are positioned as shown in Fig. 1, with the wheels 1 of the register remaining in their "zero" positions. On depressing the key 22, an attached abutment 21 co-operates with the lever 15 to rotate a second lever 17 about a fixed shaft 18, and so move a connecting rod 23, which is always in operative connection with the division mechanism, in the direction of arrow D. Division is thereby initiated. Multiplication.-When a multiplicand is set into the wheels 1 of the register, the register and shiftable levers 4 are moved by known means to the right and back again (in Fig. 1). Simultaneously, the wheels 1 are rotated to break co-operation between the cams 3 and shiftable levers 4, whereupon the latter are rotated anticlockwise by a spring 7. As the levers 4 return to the left, the rod 8a is engaged by notches 6 in the levers 4, to be rotated anticlockwise about the shaft 9. Rod 10 is thereby freed for movement to the left by a spring 13, and a cranked rod end 14 urges the lever 15 anticlockwise about its pivot point 16 and out of the path of the abutment 21. Depression of the key 22 thereby initiates multiplication only.
Patent GB-1525135-A (GB)
Title: Tissue laminate
IPC: D04H3/12
Filed: 1975-12-02
Abstract: 1525135 Laminates BUCKEYE CELLULOSE CORP 2 Dec 1975 [2 Dec 1974] 49512/75 Heading B5N In a method of making a laminate, a continuous non-woven material of basis weight 0À3 to 0À8 ozs./sq. yd., being unbonded or having up to a maximum of 2% of possible cross-over points spun-bonded is impregnated with an aqueous latex emulsion containing latex binder solids having a glass transition temperature of from 10 C. to -80 C. and a fach test of 2 to 40 pounds, the weight of latex solids being from 50 to 120% of the weight of the material before combining the moist impregnated material with a tissue facing layer on each surface, each tissue layer having a basis weight of 7 to 18 lbs. per 3,000 sq, ft., under a pressure insufficient to cause compaction of the laminate but permitting penetration of the latex on to the tissue layers, and drying the product. The filaments may be of polyester, polyamide or polyolefinefilaments and the latex binder solids copolymers of acrylates, vinyl acetate-ethylene copolymers, styrene-butadiene copolymers, vinyl chloride polymers, vinylidene chloride polymers, vinyl and vinylidene chloride copolymers, acrylonitrile copolymers and ethylene-acrylate copolymers.
Patent GB-1370373-A (GB)
Title: Drying of textile fibres
IPC: D06C7/00
Filed: 1971-10-25
Abstract: 1370373 RF Driers ELECTRICITY COUNCIL D L HODGETT H FUNG and J LAWTON 25 Oct 1972 [25 Oct 1971] 49531/71 Heading F4G Textile slivers are dried by conveying them on an open-mesh belt or between two open-mesh belts 42, 43 in three horizontal passes above, through and below coaxial loop-shaped electrodes 40 and simultaneously or subsequently through a transverse or parallel stream of hot air. Successive electrodes are energized alternately at opposite polarities by a generator. The slivers may be conveyed in passes above and below bars 54 across the electrodes (Fig. 9). A microswitch is operated by a roller resting on the slivers to switch off the RF generator and reduce the belt speed should a sliver break. A variable inductance across the R.F. generator is adjusted by a transducer and a resistance sensor to control the R.F. field strength according to the moisture content of the outgoing slivers. The air may be heated by heat from the R.F. generator.