baber/WOPTO huggingface dataset:
Patent GB-943535-A (GB)
Title: Improvements in or relating to discharge lamps
Inventor: MISKARIK STANISLAV
IPC: H01J61/073
Filed: 1959-10-16
Abstract: 943,535. Cathode materials and processing. TESLA, NARODNI PODNIK. Oct. 16, 1959, No. 35097/59. Heading H1D. A discharge lamp has a supply cathode heated by the impact of the discharge comprising a porous metallic body, e.g. of tungsten, impregnated with a first supply of electron emissive material which during operation of the lamp diffuses to the surface of the porous body, and having a second supply of electron emissive material with a lower work function than that of the cathode body, formed independently of and of different material from the first supply, provided on the external surface of the body or in one or more recesses or grooves formed therein. In the construction shown in Fig. 3, the porous tungsten body 15 is impregnated with aluminium-barium oxide mixed with calcium oxide and has a recess 16 containing the second supply of emissive material 17 which can be a metal, a metallic oxide, an alloy or mixed crystals of substances such as barium, strontium and calcium carbonates, having a work function less than that of tungsten. In the construction shown in Fig. 4, the porous body comprises a cylindrical portion 22 integral with a cone-shaped portion 22<SP>1</SP> and the second supply of emissive material 25 is formed as a paste in the annular groove 24. In the construction shown in Fig. 5, the second supply of emissive material is formed as a coating 25 on the impregnated porous body 22. The second supply of emissive material can be applied by spraying, coating or cataphoresis. The mechanical strength can be improved by drying or sintering in an atmosphere of hydrogen, nitrogen or of another reducing or inert gas.
Patent GB-946543-A (GB)
Title: Improvements in or relating to energy-converting materials
IPC: H01M14/00
Filed: 1959-10-16
Abstract: 946,543. Electric immersion heaters. ELECTRONIC HEATERS Ltd., and W. E. WATSON. Oct. 7, 1960 [Oct. 16, 1959 (2)], No. 35145/59. Heading H5H. [Also in Divisions C1 and F4] An energy converting material is produced by neutralizing with ammonia an aqueous medium formed by bring- ing together in the presence of nitric acid, the products of the action of concentrated nitric acid on silver, zinc and a gold/ mercury amalgam, silver, zinc and gold being present in the medium in the proportions of about 2 to 4 to 1. In a preferred embodiment the aqueous medium is formed prior to its neutralization by dissolving chemically pure zinc and silver separately in concentrated nitric acid and then bringing the resulting solutions into contact with the gold mercury amalgam, the zinc, silver and gold being in the proportions of 4 to 3 to 1 and then adding excess concentrated nitric acid to the mixture. The mixture is then well stirred and neutralized by the addition of concentrated ammonia and the neutralized medium slowly dried to recover the solid constituents. The properties of the admixture may be improved by heating in a crucible under pressure of 400 lbs. per square inch and the vapour condensed. The resulting mixture is said to be unstable but may be coated with a thermoplastic capable of withstanding temperatures of 300‹ F. Fluosilicate is suggested and it is applied by crushing the particles to the size of granulated sugar, suspending them in a solution of glass in hydrofluoric acid, neutralizing the excess acid and drying the suspension. The suspension may be absorbed by a porous support which acts as a carrier for the coated particles. Heating device.-Fig. 1 shows a device which may be screwed into a radiator in a closed water heating system to act as a heater. A housing 1 has an electrode supporting head 2 of mica. Inside the housing is a perforated element 3 having a conducting sleeve 6 around it connected to electrode 7. A central conducting electrode 8 has a hollow particle container 10 in which are particles made by the process described above. This arrangement is said to be an efficient heating device when connected across an A.C. supply, circulation of water taking place through aperture 5. The closed circuit may contain a solution made by adding some of the above particles to the water. In an alternative embodiment the energyconverting material is coated on a platinum coated disc and covered by an insulating member which is perforated to permit access of the water to be heated.
Patent GB-1282368-A (GB)
Title: Improvements in electrical power-supply installations
Inventor: BAUM WALTER
IPC: B60R16/02
Filed: 1970-07-21
Abstract: 1282368 Installation systems BAUM ELECTROPHYSIK GmbH 21 July 1970 [22 July 1969] 35260/70 Heading H2H Apparatus for supplying a plurality of loads, particularly in motor vehicles, the loads being arranged in two or more groups 6-7, 8-9, which are spatially separate from each other, a central station 12 and a common current source 1, comprises cables 2, 3 running between the source 1 and distributer stations 4, 5, one for each group, which stations contain electric or electronic switch elements, the cables 2, 3 comprising a core consisting of a plurality of signal conductors surrounded by a conducting sheath, the sheath being connected via the switch elements to supply current to the load, and the signal cores being connected to activate the switch elements powered by the source 1 via switches 11 of the central station 12 and a lead 10. The sheath of the cables is preferably corrugated or pleated.
Patent GB-1126253-A (GB)
Title: Improvements in, or relating to shelves
Inventor: SAINSBURY JOHN
IPC: A47B96/06
Filed: 1966-08-06
Abstract: 1,126,253. Shelving. SAINSBURY & PARKINSON, Ltd. 31 July, 1967 [6 Aug., 1966; 21 Feb., 1967], Nos. 35311/66 and 8205/67. Heading A4B. A shelf 11 has one longitudinal edge supported in a longitudinal channel 15 of a wall mounted strip 10, Fig. 3, having unequal length limbs 16, 17 with lips 18, 19 engaging opposed faces of the shelf 11, disengagement of the shelf 11 from the strip 10 being prevented by fitment of caps 12 engaged over the ends of the shelf and strip. The shelf 11 is fitted with edge members 22 defining ribs 23 which engage one behind the upper lip 18 and the other behind a wedge 25 carried by an end cap 12, the wedge 25 engaging behind the lower lip 19. In another embodiment, Fig. 6, the strip 10a comprises a metal pressing with lips 18a, 19a spaced apart by a distance less than the shelf thickness so that the limbs of the strip 10a are resiliently pressed apart in positioning the shelf 11 horizontally. Each end cap 12a carries tapered studs 26 which engage in the strip 10a at the junctions of the limbs and base 14a of the strip 10a. A felt, sealing strip 28 is provided in a longitudinal groove 27 in the base 14a.
Patent GB-1141174-A (GB)
Title: Improvements in excitation of transducers
Inventor: GROSSOEHME FLOYD
IPC: H02P23/00
Filed: 1966-08-08
Abstract: 1,141,174. Automatic control of speed. GENERAL ELECTRIC CO. Aug. 8, 1966 [Nov. 9,1965], No. 35340/66. Heading G3R. [Also in Division G1] A transducer 56 of the type having primary 54 and secondary windings 58, 60 and means 62 for varying the coupling between them is energized with squarewaves of constant voltage amplitude from a source 10 of variable frequency and amplitude by supplying it from a transformer 44, the primary of which is energized from constant positive and negative voltage sources 24, 28 derived from the source 10 switched alternately by a switching device 34, 38, 40 operated by the source 10. A large capacitor 46 is said to eliminate the effect of asymmetry in the hysterises loop of the transformer 44. The invention is applied to a system for controlling the speed of a prime mover 12, in which the transducer 56 provides the desired speed signal, this signal being converted to a D.C. voltage at 70 and compared at 84 with a voltage representing actual speed, derived from a frequency to voltage converter 80 supplied from an additional winding 78 on transformer 44. None of the devices shown as "boxes" are described in detail.
Patent GB-911515-A (GB)
Title: Improvements in or relating to the purification of materials by the zone melting method
IPC: C30B13/28
Filed: 1960-10-14
Abstract: <PICT:0911515/III/1> In the zone-melting of a silicon rod by means of an induction heating coil, the heating effect of the coil is first automatically increased by means of a control device to form a molten zone, whereupon commencement of rotation of the lower end of the rod as a result of a torque applied continuously thereto actuates the control device to cause relative upward movement of the coil with respect to the rod, and an initial stretching and a final compression of the two ends of the rod.  The control device may be actuated, by commencement and termination, respectively, of the rotation, to effect alternate decrease and increase in the heating effect of the coil.  As shown, a rod is held between holders 15 and 17 in a frame 3 which is vertically movable by means of a driving device 16 actuated by control device 22, and the molten zone is formed at the lower end of the rod by means of a stationary induction coil 5 connected to a generator 24, a transformer 23, and control device 22.  Holder 17 is capable of vertical movement in frame 3 by the action of a motor 18 operated by control device 22, and holder 15 forms a friction coupling with a continuously rotating sleeve 12.  On formation of the molten zone and consequent rotation of holder 15, light passing from a source 20 is intermittently cut off from a photo-electric cell 21 by rotation of an apertured wheel 19 connected to holder 15 and control 22 is thereby actuated to effect upward passage of the molten zone.  Commencement and termination of the operation is effected by engagement of a stop 25 on frame 3 with limit switches 26 and 27 connected to control device 22.  The operation may be repeated.
Patent GB-619267-A (GB)
Title: Improvements in milling cutters for cutting saws with straight teeth
IPC: B23D65/04
Filed: 1946-11-29
Abstract: 619,267. Milling-cutters. BRAYSHAW FURNACES & TOOLS, Ltd., BRAYSHAW, S. N., NEWMAN, F. C., and MAGUIRE, T. Nov. 29, 1946, No. 35396. [Class 83 (iii)] A milling-cutter for cutting the teeth of saws, of the type in which the cutter is in two or more sections and the faces of adjacent sections are interlocked by mating projections and recesses, is characterised in that the ends of the mating projections p and the bottoms of the corresponding recesses r are formed parallel to the angular clearance given to the serrations c of the teeth a. The cutter sections are keyed on to the driving shaft with adjacent sections slightly out of line longitudinally so that the sections come into action successively.
Patent GB-806085-A (GB)
Title: Comminuting machine
IPC: B02C19/00
Filed: 1956-11-20
Abstract: <PICT:0806085/III/1> Apparatus for comminuting material in the form of a suspension in liquid comprises two relatively-rotatable members 2, 4, each conforming to a separate surface of revolution and shaped to permit mounting of the members in coaxial relationship with a narrow clearance therebetween, at least one ring-shaped array of projections 34, 36 arranged on one of the surfaces and at least two ring-shaped arrays 40, 42 arranged on the other surface, and a multiplicity of teeth 24, 26 of complementary shape on each of the members arranged to move past each other with a close clearance within an annular depression 22 in one of the members.  The arrays all contain the same number of projections, are coaxial with the axis of rotation, lie radially adjacent each other with a close clearance of cylindrical shape between them, and have the projections defined by slots of uniform width equiangularly disposed about the axis of rotation with each projection of each array subtending an angle equal to that subtended by the slot between adjacent projections of the next array or arrays.  The radially-outermost array of projections 42 on the plane face of the rotor 2 decrease in height as the radius increases to conform to the conical-concave shape of the stator 4. The material, which may be supplied by a pump through a central aperture 12 in the stator 4, is initially comminuted by teeth 16, formed in the stator aperture, and impeller blades 18 assist the radial flow of the material to the arrays of projections.  The relative rotation of the stator and rotor causes the projections to form periodically substantially closed chambers and impart an intermittent radial and tangential flow to the material before it passes between portions 20, 30 to be further comminuted by the teeth 24, 26 in the depression 22.  The teeth 24, 26 are finer and more numerous than the projections and those on the stator may be formed by milling slots in the two halves of a ring 9 secured to the stator by bolts 44.  From the depression, the material continues radially outward through an annular slit 45 to blades 25, formed on the rotor, and into one or more exit conduits 15 which pass through a housing 6. A space 3, between the housing and the rotor and stator assembly, may be used for heating and cooling purposes.  The rotor 2 is driven by a shaft 13 on a motor 10, a spring-pressed bellows and packing assembly 21 preventing the passage of the material into the motor.
Patent GB-832476-A (GB)
Title: A reminding device
IPC: G04C21/20
Filed: 1958-11-05
Abstract: 832,476. Clock-driven indicators. SCHMID, A. Nov. 5, 1958 [Nov. 8, 1957], No. 35513/58. Class 118 (2). [Also in Group XL (c)] A reminding device has a calendar pad provided on each sheet with a space for notes and with at least one time scale and a driving mechanism moving at least one feeler contact which touches the said sheet with correet timing along the scale. When passing an electrically conductive marker line the feeler contact establishes an electric connection on the input of an amplifier whereby a reminder signal is produced in at least one alarm device operatively connected to the amplifier output. In the embodiment described, each sheet 3 of the calendar pad 2 has two time scales, one in each of the longitudinal margins, one of which covers the period six to fourteen hours and the other the period fourteen to twentytwo hours. Parallel to these margins run two belts 6 passing over pulley wheels 7 and 8 and driven by a synchronous motor 11, each of which belts carries contacts 12 and 13. The contacts are biased to lift clear of the pad, but are prevented from so doing whilst passing over the time scale by the crank rails 16. When the two contacts pass over a conductive mark 15 they are connected together and a positive potential is applied from the bridge rectifier 23 via earth to cause the cold cathode valve 25 to strike and operate relay R. Contact r1 completes the circuit for a warning neon 33 and contact r2 allows capacitor 38 to discharge through neon 36 and the electromagnet 37 of the gong 42. After discharging capacitor 38 the neon 36 is extinguished and the capacitor slowly recharges until the potential is again sufficient to strike the neon 36. The beats of the gong are thus repeated until the key 24 is opened. The motor. 11 can alternatively be clockwork and can be associated with a clock face, and the contacts 12 and 13 may be mounted 'on a screw-threaded spindle having both left and right-hand threads. Instead of two contacts, contact 12 may be replaced by a conductive line in the margin across which the marks 15 are made.
Patent GB-1109931-A (GB)
Title: Induction flow meter
Inventor: NIKITIN BORIS IVANOVICH
IPC: G01F1/60
Filed: 1965-08-19
Abstract: 1, 109, 931. Electro-physical measurement. NAUCHNO-ISSLEDOVATELSKY INSTITUTE TEPLOENERGETI-CHESKOGO PRIBOROSTROENIA. Aug.19, 1965, No. 35584/65. Heading G1N. An induction-flow-meter operating in a nullcircuit arrangement comprises an inductionmeasuring-head 1, transformer coupled to highgain amplifier 14..18 to energize a reversible motor 22 actuating a recording instrument pointer. The actuator is also coupled to the core 10 of a differential transformer providing a balancing signal in phase-opposition to that from the induction measuring head through phase-shifter 33, potential divider 35 and transformer 12, whereby the system acquires a balanced condition when the difference between the measuring signal and balancing signal is less than the threshold sensitivity of the amplifier. Compensating Circuits. Inductor 32 compensates for mains frequency variation; manually adjustable core 9 of a differential transformer connected through a phase-shifter 36 and divider 37 to the transformer 12 provides for zero setting to compensate for stray field signals.
Patent GB-953400-A (GB)
Title: Method of fixing digits to back plates
Inventor: DODDS RALPH GORDON
IPC: F16B5/04
Filed: 1961-11-03
Abstract: 953,400. Fixing digits to back plates. HILLS (PATENTS) Ltd. Jan. 29,1963 [Nov. 3, 1961], No. 35594/61. Heading G5C. A digit 7 is secured to a back plate 1 by forming a dished recess with an aperture 9 in the plate adjacent to each stud 8 on the digit, and flattening the dished area to close the aperture and grip the stud, as in Fig. 4. The aperture and dished recess may be formed by a punch and die (Figs. 1, 2, not shown). The studs may taper towards the root end as shown, or have a peripheral groove near the root, or be cylindrical and deformable. The pressing operation (Fig. 3) employs a press 11 with a rubber pad 12. A vehicle number plate may be assembled by this process.
Patent GB-1204166-A (GB)
Title: Fluid sealing gaskets and compositions therefor
IPC: F16J15/10
Filed: 1967-08-03
Abstract: 1,204,166. Laminates. MINNESOTA MINING & MFG. CO. 3 Aug., 1967 [4 Aug., 1966], No. 35663/67. Heading B5N. [Also in Divisions C3 and F2] A gasket comprises an elastomeric binder matrix 10 containing hollow rigid collapsible particles 11 which have a resistance to collapse such that the gasket or coating is capable of withstanding a continuous static pressure of 250 lb./inch<SP>2</SP> without a particle collapse of more than 10% and incapable of withstanding a continuous static pressure of 1600 lb./inch<SP>2</SP> without a particle collapse of 50%, and such that an increase of 300 lb./inch<SP>2</SP> while working within the range of 250 to 1600 lb./inch<SP>2</SP> gives rise to more than 10% decrease in thickness. The hollow collapsible particles 11 may be made of metal or glass beads which have a size of between 10 and 300 microns and occupy between 20 and 80% of the total volume. The matrix 10 may be silicone or nitrile rubber, polyurethane, chlorine-containing material, polyamide-containing material or a fluoroelastomer; a filler such as asbestos or cellulose fibre may be added. The gasket may be strengthened by bonding to one or both sides a layer 13 of polyester resin, paper or aluminium foil and, if desired, a further layer 14 may be provided of the same material as the gasket or of another material with or without fillers such as asbestos or cork. The gasket may comprise two layers 12 laminated together.
Patent GB-1174728-A (GB)
Title: Mowing Machine
IPC: A01D57/30
Filed: 1968-07-26
Abstract: 1,174,728. Mowing machines. P. J. ZWEEGERS & ZONEN LANDBOUWMACHINEFABRIEK N.V. 26 July, 1968 [28 July, 1967; 20 Oct., 1967], No. 35688/68. Heading A IF. A mowing machine comprises at least two rotary mowing devices 16, 21 each carrying a number of cutters 22 for rotation in a horizontal plane, and a freely rotatable guide 24 mounted adjacent at least one of the mowing devices, rotation of the guide being in a plane which is parallel, Figs. 1, 2 (not shown), or inclined to the cutting plane of the adjacent mowing device, a portion of the guide 24 extending into the path of crop discharged rearwardly from the adjacent mowing device so that the cut crop causes the guide to rotate and deposit the crop in a row on the ground. As shown, the mowing devices are mounted from a beam 15 the left end of which is connected to and projects laterally from a tractor, the machine being towed in direction of arrow 17 as seen in Fig 4. The mowing devices 16, 21 are rotated in opposite directions, as .indicated by arrows 18, so that cut crop is discharged rearwardly of the machine between the two mowing devices, the crop then engaging the guide 24 which deposits the crop to its left thus leaving a strip behind the outer mowing device clear of cut crop so that the wheels on one side of the tractor may pass in this strip during the next cutting, operation. Alternatively, Figs. 1 and 2 (not shown), the mowing devices (5) may be mounted on top of a common beam (1), the guide (12) being positioned for rotation in a horizontal plane behind the outermost mowing device (5a). As shown, the guide 24 overlaps part of the adjacent mowing device, and in alternative embodiments the plane of the guide 24 may be horizontal, the guide 24 may be disposed clear of the adjacent mowing device, the guide (12) may be inclined to the horizontal, and the guide (12) may overlap part of its adjacent mowing device. As shown, the guide 24 is frustoconical and may be provided with ribs but the guide may take alternative shapes such as a disc and drum.
Patent GB-414286-A (GB)
Title: Improvements relating to alkaline electric accumulators of the nickel-iron type
IPC: H01M4/36
Filed: 1933-12-19
Abstract: 414,286. Accumulators. SVENSKA ACKUMULATOR AKTIEBOLAGET JUNGNER, 17, Riddaregatan, . Stockholm.- (Assignees of Tragardh, A. U. ; 12, Wittstocksgatan, Stockholm.) Dec. 19, 1933, No. 35723. Convention date, Dec. 19, 1932. [Class 53.] An alkaline accumulator of the nickel iron type has a positive electrode, the active material of which consists of oxides or hydroxides of nickel or cobalt together with oxides or hydroxides of one or more metals capable of forming a number of oxides, the higher ones of which are of acid character. Such metals include gold, metals of the platinum group, vanadium, niobium, tantalum, uranium, chromium, molybdenum, tungsten, tin, lead, titanium, thallium and manganese. Conductive material such as graphite or metal flakes, and porosity producing substances such as carbohydrates may also be added to the active material. The mixture of oxides or hydroxides may be obtained by simultaneous precipitation from a solution containing salts of nickel or cobalt and salts of one or more of the additional metals. The active material is enclosed in perforated pockets of nickel or nickel-plated iron to form the positive electrodes which are used with iron or cadmium negative electrodes.
Patent GB-1181870-A (GB)
Title: Gate Valve
IPC: F16K3/12
Filed: 1967-08-03
Abstract: 1,181,870. Valves. GODDARD INDUSTRIES Inc. 3 Aug., 1967 [8 Aug., 1966], No. 35776/67. Heading F2V. A gate valve, suitable for use at cryogenic temperatures, comprises a main body portion 10 and a cap portion 12, the former including a fluid flow passage 15 intercepted by a gate chamber 13, and a jacket 80 defining a vacuum chamber 81, and the latter portion including a ring 35 removably secured to the body portion and having fixed thereto a sleeve member 25, which member has disposed therein the gate spindle 26. The spindle is retained in position by two journals 41, 42, of which two the latter is resilient, and is displaceable axially but non- rotatably by rotation of a hand-wheel 47. The valve gate 14, which is secured to the spindle by means of a semi-spherical end 29 provided on the spindle and engaging a socket 30 provided on the gate, comprises two planar and mutually inclined surfaces 18 and 19 which are formed with annular recesses (67, Fig. 2, not shown), the recesses housing annular resilient sealing rings having an L-shaped or T-shaped cross-section, the stem portion of each of which projects for engagement with the annular seat 17 and the flange portion of each of which, extending from, and at right angles to the stem portion, is engaged by a plate or ring disposed within the recess and removably secured to the wedge (Figs. 2, 5 and 6, not shown), a bleed passage 14A, 14B being formed within the wedge for draining chamber 13 to the passage 15.