baber/WOPTO huggingface dataset:
Patent GB-325373-A (GB)
Title: Improvements in or relating to devices for damping oscillations and irregular movements of road vehicle wheels
IPC: F16F7/04
Filed: 1929-02-02
Abstract: 325,373. Widall H. Feb. 2, 1929. Vibration-dampers.-Vehicle steering-dampers of the friction-disc type are formed with raised portions or undulating faces which are adapted to co-operate in varying the pressure between the friction elements during the steering movements, so as to obtain a maximum frictional effect when the vehicle is driving straight ahead, and to reduce or eliminate the friction for larger displacements of the steering mechanism in either direction. In the example shown, a box member 8 is formed with upstanding plates 3, 4 by means of which it is clamped below the axle. Discs 12 of frictional material are interposed between movable metal discs 11, 11<a> and non-rotatable parts consisting of the top wall of the box 8 and a plate 10 which is free to move vertically. The movable discs 11, 11<a> are formed integral with arms 13 which are connected to the track rod of the vehicle so that they follow the steering movements. Projections 16 on the lowermost disc 11<a> bear, when the vehicle is steering straight ahead, on similar projections 16a formed on a non-rotating plate 10<a> which is forced upwards by a starshaped spring plate 18. The initial pressure on the discs may be adjusted by means of the nut 20 screwed on the centre bolt 9, a lower closure plate 19 for the box 8 being interposed between the nut 20 and the spring 18. The arms 13 work in slots in the curved side 15 of the box.
Patent GB-1194175-A (GB)
Title: Sputter Ion Vacuum Pump Power Supply Apparatus.
Inventor: ANDREW DEREK
IPC: H02H7/00
Filed: 1969-01-22
Abstract: 1,194,175. Supply systems for sputter ion vacuum pumps. MULLARD Ltd. 22 Jan., 1969, No. 3598/69. Heading H2H. A sputter ion vacuum pump fed with direct current is provided with means to reduce the current substantially to zero for a plurality of cycles of the A.C. supply in response to a current surge and thereafter to restore the current flow. A sputter ion vacuum pump 1 is fed from an A.C. supply 2, 3 by way of a device 4 which includes a transformer, voltage multiplier and a rectifier, the input to the device 4 being controlled by way of a diode bridge 5 having a thyristor 23 connected between the terminals X thereof. Should a fault occur in the pump such as would produce a current pulse in the primary winding of a transformer 7, the output pulse from the secondary winding thereof charges a capacitor 8 the voltage across which forms the input signal to an amplifier comprising transistors 13, 14. The output of the amplifier appears at the junction of resistor 18 and capacitor 19 and is taken to a thyristor 20, the gate of which is supplied with a reference voltage from a Zener diode 22. Thus whenever a pulse appears at the secondary winding of transformer 7 the thyristor 20 is rendered non-conductive so removing the trigger pulse from the thyristor 23 to cut off the supply from the device 4. The capacitor 8 discharges through a variable resistor 10 and, after a number of cycles of the A.C. supply determined by the value of this resistor the output of the amplifier disappears and the thyristors 20, 23 resume their conductive states to restore the supply to the device 4. If desired the diode bridge 5 may be placed on the secondary side of the transformer in the device 4.
Patent GB-1399158-A (GB)
Title: Speed control system for ac series commutator motor
IPC: H02P7/295
Filed: 1972-06-08
Abstract: 1399158 Automatic speed-control YAMAMOTO ELECTRIC INDUSTRIAL CO Ltd 8 June 1972 [29 Dec 1971 8 Feb 1972 (2)] 3640/75 Divided out of 1399157 Heading G3R [Also in Division H2] A speed-control system for an A.C. series commutator motor comprises the combination of a full wave rectifier and a controlled bi-directional semi-conductor switch having at least two electrodes, which combination supplies intermittent rectified current to the motor from an A.C. source as a function of a control signal obtained by comparison of a predetermined voltage derived from the A.C. source with the voltage induced in the motor, means being provided to reduce instability in the low speed range of operation, caused by low residual magnetism in the motor field winding reducing the induced voltage signal, and comprising a discharge circuit connected in parallel with the field winding so that the energy accumulated therein, during motor energization is discharged through the field winding when the motor current is interrupted, the discharge current augmenting the residual magnetism to increase the induced voltage signal. In the embodiment of Fig. 1, the full wave rectifier comprises elements 56 - - - 59, the semi-conductor switch is a Triac 51 and is controlled by a firing circuit having resistors 65, 66, a capacitor 67 and a Diac 52, and the field winding 2 of the motor 1 is shunted by a rectifier 20. Figure 1 may be modified as follows:- (1) Resistors 65, 66 are connected across terminals 9, 10 and capacitor 67 is connected to the junction of Triac 51 and the bridge 56 - - - 59, Fig. 4 (not shown). (2) The Diac 52 is connected to a voltage divider comprising a neon tube (90), tapped resistor (85) and capacitor (77) series-connected between the terminal 9 and the junction of the bridge and Triac, the resistor tap being connected to the terminal 10 through another resistor (86), Fig. 5 (not shown). (3) The winding 2 is shunted by a series-connected rectifier 20 and adjustable resistor (25), Fig. 2 (not shown) or by a series-connected rectifier 20. changeover switch (30) and resistor (34), Fig. 3 (not shown); the resistor being varied or the switch being operated to vary the induced voltage signal and reduce the maximum operating speed of the motor. In the embodiment of Fig.6, the semi-conductor switch is a bi-directional diode thyristor 91 controlled by a firing circuit having capacitors 94, 95, resistors 96, 97, a second bi-directional diode thyristor 92 and a boosting autotransformer 93. This embodiment may be modified, Fig. 7 (not shown) by connecting the resistor 96 to terminal 9 through a neon tube (90) and replacing the adjustable resistor 97 by a fixed resistor (86) connected to an adjustable tap on the resistor 96. In all the embodiments the speed regulating variable resistor 65 or 97 may be replaced by a photo-conductive element and in the first four embodiments the Diac may be replaced by a neon tube.
Patent GB-310114-A (GB)
Title: Improvement relating to the headlights of automobiles
IPC: B60Q1/14
Filed: 1928-09-03
Abstract: 310,114. Bayley, J. Sept. 3, 1928. Motor-vehicle head lamps; lantern screens. - A transparent or translucent screen 1 interposed between the light source 3 and the reflector 2 is pivotal about an axis parallel to the longitudinal axis of the reflector so as to be movable from its normal position above the light source into interposed positions on either side. The arcuate screen 1 tapered in width rearwardly is fixed to a spindle 5 rotatable in a bearing 6 integral with or fixed to the reflector 2, the spindle carrying at its rear end an arm 7 connected by Bowden wire 11 to a control on the dashboard. A clip 8 grips the lamp socket 9 and the bearing 6, and a spring 10 connecting the arm 7 to the clip 8 returns the, screen to normal position. The arms 7 of two head lamps may be connected by a wire or rod so that the screens are operable in unison from a single control.
Patent GB-137933-A (GB)
Title: Improvements in and relating to cartridges for sporting and other firearms
IPC: F42B7/04
Filed: 1919-02-14
Abstract: 137,933. Down, T. M. Feb. 14, 1919. Gun cartridges.-Consists in making front ignition cartridges with (1) a central tube a containing a strand of gun-cotton k and having notches f at the front end for conveying ignition from the primer l to the front of the propellent charge c, and (2) an asbestos wad d beneath the ordinary wad e. The cartridge case, if of paper, may have an interior lining of metal. The charge c is compressed in layers or built up of flat rings with intermediate washers ofpaper.
Patent GB-550245-A (GB)
Title: Improvements in and relating to the production of moulding powders
IPC: C08K3/38
Filed: 1941-03-22
Abstract: 550,245. Grinding by the aid of special solutions &c. SHAWINIGAN CHEMICALS, Ltd. March 22, 1941, No. 3914. Convention date, March 213, 1940. [Class 59] [Also in Group IV] Moulding powders are obtained from resinous polyvinyl compounds or from cellulose derivatives containing free hydroxyl groups, by forming a brittle product by treatment with boric acid, drying and powdering such product and removing boric acid therefrom. Specified are polyvinyl partially hydrolysed esters, acetals and acetate-chloride interpolymers containing free hydroxyl groups; cellulose esters and ethers. In examples (1) polyvinyl formal was dissolved in a cold solvent mixture of benzene and alcohol, boric acid was added and the solvents removed by evaporation, the dried material being ground and the boric acid removed by treatment with water: (4) substantially completely hydrolysed polyvinyl acetate was dissolved in water, boric acid added, the viscous material dried under vacuum and ground, after which the boric acid was removed by treatment with aqueous acetone; (5) cellulose acetate, dissolved in acetone, and (6) ethyl cellulose, dissolved in methanol, were treated similarly to (1).
Patent GB-348142-A (GB)
Title: Improvements in or relating to the manufacture of sulphuric acid by the lead-chamber process or by the tower process
IPC: C01B17/84
Filed: 1930-02-05
Abstract: <PICT:0348142/III/1> In a chamber or tower process for sulphuric acid, part of the Glover discharge gases are sucked off and blown into the lower part of the Glover through an injector nozzle producing a suction effect on the roaster gases.  Nitrators and denitrators may be arranged before the Glover in known manner. Roaster gases enter by a conduit 2 into a denitrator 8, fed with nitroso-sulphuric acid from a tank 50, and are continuously nitrated, the denitrated acid being led off by a conduit 51.  The gases are further nitrated by spraying with highly nitrated Gay Lussac acid in a nitrator 34, and then pass to a Glover 1.  The exhaust gases, still containing excess of nitrogen oxides, are returned in part to the injector nozzle 4 by an exhauster 9 through pipe 10 and regulator 11, producing a suction on the roaster gases and conveying the gas mixture through the apparatus.  The Glover is fed with acid of about 57-58 DEG  B<\>ae and yields an acid of at least 60 DEG  B<\>ae, almost free from nitroso-acid.  The slightly nitrated acid from the nitrator 34 is pumped back to tanks 29, 30 supplying the nitrator and Glover respectively.  Part of the Glover acid is fed to tanks 30, 46, supplying the Glover and Gay Lussac respectively, while part, corresponding to the daily production, is led by pipe 65 to the denitrator circuit and is denitrated. The denitrator 8 is then fed by pipe 59 with Gay Lussac acid from tank 29, and part of the Glover exhaust gases sucked off by the exhauster 9 may be injected through pipe 35.  Excess of nitrogen oxides are always present and remain in circulation.  The gases now pass through chambers 71, 73, sprayed with nitrated acid of about 58-60 DEG  B<\>ae in a closed circuit, in the first of which weakly nitrated, and in the second strongly nitrated acid is produced, the two acids being mixed in a tank 81.  A chamber 75, sprayed with acid of about 40 DEG  B<\>ae in a separate circulation, converts the remaining sulphur dioxide, water being added to the tank 93 to maintain this concentration.  The acid produced is led by pipe 100 to the circulation of chambers 71, 73 where it is concentrated to 58-60 DEG  B<\>ae, and then fed through pipe 90 to the Glover-Gay Lussac circulation.  When using the process in existing plant, a further Gay Lussac must be added or a preabsorber 77 built in.  The Gay Lussac 79 first receives acid from the tank 46 which acid is then saturated with nitrogen oxides in the preabsorber 77 as in the ordinary process using several Gay Lussacs. Towers may be used behind the Glover instead of chambers.
Patent GB-630504-A (GB)
Title: Improved glass composition
IPC: C03C3/078
Filed: 1947-01-15
Abstract: 630,504. Glass manufacture. BRITISH THOMSON-HOUSTON CO.. Ltd., and STANWORTH, J. E. Jan. 15, 1947, No. 1402. [Class 56] A glass transparent to both ultra-violet and infra-red rays (i.e. from 2537 to 50,000 angstrom units) has a composition within the following ranges (W. per cent): SiO 2 + B 2 O 3  60-74 (B 2 O 3  0-5), alkali oxides 13-20, alkaline earth oxides 8-27; aluminium metal powder (which may partially be replaced by silicon metal) having been added to the batch to an amount of 0.5-5 parts by weight to 4500 parts of SiO 2  to reduce any iron oxide to the ferrous state, the total Fe 2 O 3  being not more than 0.015 per cent. Alkali carbonates, barium, magnesium, and calcium carbonates, and borax are referred to as possible batch ingredients, but ultraviolet or infra-red absorbing impurities such as S, ZnO, I 2 , PbO, SrO and Al 2 O, are to be avoided. The finished glass has a coefficient of thermal expansion of about 9.5 x 10<SP>-6</SP> per ‹.C. An example suitable for incandescent and discharge lamp envelops, and which will seal to coppercoated nickel-iron, is as follows (wt. per cent): SiO 2  65, B 2 O 3  2, Na 2 O 5.5, K 2 O 9.5, BaO 18, Al 0.03. Specification 312,728, [Class 56], is referred to.
Patent GB-1061798-A (GB)
Title: Improvements in "adhesive composition"
IPC: C09J4/00
Filed: 1964-10-15
Abstract: 1,061,798. Coatings. GENERAL ELECTRIC CO. Oct. 15, 1964 [Oct. 28, 1963], No. 42051/64. Heading B2K. [Also in Division C4] An adhesive primer for bonding silicone rubbers to metal comprises an alkenyl triorganoxy-silane of the general formula RSi(OR<SP>1</SP>) 3 , where R is an alkenyl radical and R<SP>1</SP> is a substituted or unsubstituted monovalent hydrocarbon radical, and phosphorous acid. The compositions may also contain an alkyl or hydroxy-alkyl orthosilicate or a partial hydrolysate thereof, and a solvent. The composition may be applied to iron, iron alloys, cobalt, nickel, aluminium, glass, ceramics or masonry by brushing, spraying or dipping and may be cured by air-drying or heating. In one example a composition comprising vinyl tris (2-methoxyethoxy)-silane (100 parts), phosphorous acid (1.5 parts) and isopropanol (700 parts) is sprayed on to a glass surface and air dried; a room-temperature-vulcanising silicone rubber is then applied and left 24 hours to cure.
Patent GB-907326-A (GB)
Title: Improvements relating to focusing x-ray cameras for x-ray diffraction studies
Inventor: GREEN RONALD SYDNEY
IPC: G01N23/205
Filed: 1960-02-05
Abstract: 907,326. X-ray diffraction cameras. SETON CREAGHE ENGINEERING Ltd. March 7, 1961 [Feb. 5, 1960], No. 4210/60. Class 98 (1). An X-ray camera comprises a crystal monochromator mounted for rotation about an axis coincident with the axis of swing of an arm which carries the camera. The whole apparatus is mounted on a base la, which carries a set of cross-slides 2, 3. The slide 3 carries a vertical tubular axle 5 on which is swingably mounted the arm or camera platform 4. Coaxial with the axle 5 is a housing 6 having a table 7 which carries a monochromator crystal 9. Rotation of the table 7 thus adjusts the angle of incidence on the crystal of the beam from the X-ray generator (not shown). A diaphragm with adjustable shutter members 11, 12, 13, 14 forms an adjustable aperture for the X-ray beam reflected from the monochromator. The platform 4 has a guideway 15 along which, moves a slide 16 carrying a swivel mounting 17. The swivel mounting itself is formed as a guideway carrying a slide 22 on which is rotatably mounted the base part 24 of the cassette 25. The cassette can thus be rotated about a central vertical axis, and is provided with means for retaining it in selected indexed positions. The film is held against the inner cylindrical wall of the cassette by spring bands 26. An L-shaped specimen holder 31 is supported in front of the cassette on a disc 27 which can be oscillated by a motoroperated driver shaft 19; thus the specimen holder can be rocked about the vertical axis of the cassette through an appropriate angle, e.g. 8 degrees. The cassette may also include a beam trap, formed as a vertical cylinder having a vertical slot in one wall, to intercept the beam entering the cassette, while the camera is being set up, and movable out of the path of the beam when it is required to make an exposure. In setting up the camera for use, the monochromator is set to approximately the correct orientation, and then the arm 4 swung until the reflected beam from the monochromator is picked up by a suitable screen placed on the mounting 17 adjacent its swivelling axis (the cassette being moved away). The monochromator is then adjusted to produce the correct relationship between the monochromator position and the focus of the incident X-ray beam. The slide 16 is adjusted along the guideway 15 until the focus of the reflected beam is coincident with the rocking axis of the swivel mounting 17. The slide 22 is adjusted along the mounting 17 so that the film in the cassette coincides with the focus of the beam.
Patent GB-1362942-A (GB)
Title: Semiconductor components
IPC: H01L21/52
Filed: 1973-01-29
Abstract: 1362942 Semi-conductor devices SIEMENS AG 29 Jan 1973 [3 May 1972] 4359/73 Heading H1K An enclosure for a semi-conductor element comprises two parts (Figs. 1, 2) each comprising an, e.g. ceramic insulant ring 1 to the upper face of which is applied annular lamina 6 of, e.g. glass fibre fabric saturated with a thermally hardenable, e.g. epoxy adhesive solid at room temperature, overlain by a dished cover-plate 2 of, e.g. silver plated copper. Annular plate 3 extending outwardly of the circumference of the ring, of metal having coefficient of thermal expansion approximating thereto is applied to the lower face of the ring over a lamina 7 similar to 6, and the assembly is pressed together at a temperature of, e.g. 200‹ C. to melt and harden the adhesive, the adherent surfaces being previously roughened. A semi-conductor body 12, of e.g. Si with Au and Mo electrodes 13 and 14 is inserted into the interior of the opposite halves with interposition of an, e.g. Cu terminal electrode 18, and the circumferentially extending edges of the annular plates are welded together, e.g. by annular induction electrodes 15, 16. Alternatively the housing halves may be interconnected by flanging the plate edges together. The cover-plates may alternatively have a solid centre section flush with their edges. The device may be applied to a disc thyristor with its centre electrode connected to the periphery of the annular plates. Reference has been directed by the Comptroller to Specification 1,121,080.
Patent GB-1058558-A (GB)
Title: Improvements in or relating to halogenated terephthalonitriles
IPC: A01N37/34
Filed: 1964-03-31
Abstract: The invention comprises terephthalonitrile substituted by 1-3 halogen atoms; these compounds are made by dehydration, e.g. with POCl3 or P2O5, of the corresponding terephthalamides, but the fluorinated compounds are obtained by reacting the chlorinated compounds with alkali metal or cuprous fluoride. Exemplified compounds are the chloro-, fluoro-, 2,5-dichloro- or -difluoro- and 2,3-dichloroterephthalonitriles.ALSO:Compounds having fungicidal, herbicidal, bacteriocidal and nematocidal properties are terephthalonitriles containing 1-3 halogen atoms, e.g. the chloro-, fluoro-, 2,5-dichloro- or difluoro- and 2,3-dichloro-terephthalonitriles.  The compounds may be applied undiluted, or in the form of aqueous or organic dispersions, dusts or sprays; the usual wetting agents may be utilised.
Patent GB-1532010-A (GB)
Title: Omnidirectional antenna array
IPC: H01Q5/40
Filed: 1976-02-04
Abstract: 1532010 Omnidirectional antenna arrays THOMSON-CSF 4 Feb 1976 [7 Feb 1975] 04456/76 Heading H4A An omnidirectional antenna array comprises at least two independent omnidirectional antennas arranged one above the other on a common axis of symmetry and connected to concentric, coaxial feeder lines extending at the array centre along said axis of symmetry. In the Fig. 2 embodiment conductors 1 and 2 are the feeder for cylindrical folded dipole elements 11  and 12; conductors 2 and 3 are the feeder for elements 14 and 15. Traps 10 and 13 are connected to conductors 1 and 2, trap 13 providing decoupling of antenna 11, 12 from antenna 14, 15. Two biconical antennas 21, 22 and 23, 24, and two discone antennas 31, 32, and 33, 34 respectively constitute the array in the Fig. 3 and 4 embodiments. The two antennas may operate on different frequency bands, and are capable of wideband operation. The axial feed arrangement ensures that the omni-radiation pattern is not distorted by obstruction by the feeder lines. The array is useful on an aircraft.
Patent GB-965283-A (GB)
Title: Improvements in and relating to cushioning material
IPC: A47C27/15
Filed: 1961-03-07
Abstract: 965,283. Ventilating shoes. R. N. B. BROWN. June 7, 1962 [March 7, 1961], No. 4514/61. Heading A3B. [Also in Division A4] Resilient cushioning material of rubber or plastic which may be used in the manufacture of shoe or boot soles and heels is in the form of a sheet 10 formed integrally at spaced intervals with non-return valves each constituted by a pair of opposed lips 11, 12 of reduced thickness, the action of compression by the user's weight causing air to be pumped through the material and change the air around the foot. Several sheets may be bonded together or strips 16, 16a may be inserted in slots 19 (Fig. 5) or bonded together with laminae 20 (Fig. 6).
Patent GB-565750-A (GB)
Title: Improvements in or relating to holders for labels and the like
IPC: G09F3/20
Filed: 1943-03-19
Abstract: 565,750. Label holders. BRACKENSEY, M. March 19, 1943, No. 4523. [Class 73] A label holder is constructed of a body wholly, or at least that part through which the label is viewed, of glass or other transparent material, such as synthetic resin, e.g. of the acrylic type preferably polymethyl methacrylate, and has an opening permitting insertion of the label into the body and so dimensioned that it can be readily closed or sealed by a closure constituted by or comprising plastic material or material capable of being made plastic and serving to retain the label in the body. The holder body 1, Fig. 1, is closed at the end 2 and apertured at. 4 to receive a string 5, the other end being constricted at 6 forming a wider extension 7 in which the end of the label 10 may be sealed after the label has been passed into the body by means of thermo-plastic material 11, such as paraffin wax warmed as by a match. A modification is constructed as a stake for pushing in the ground and another to float on water.