baber/WOPTO huggingface dataset:
Patent GB-975182-A (GB)
Title: Improvements in or relating to electro-erosion apparatus
IPC: H03K3/282
Filed: 1960-12-06
Abstract: 975,182. Spark erosion. AGIE A.G. FUR INDUSTRIELLE ELEKTRONIK. Dec. 6, 1960 [Dec. 8, 1959], No. 42013/60. Heading B3V. [Also in Division H3] In spark-machining apparatus, the spark gap is supplied with current pulses controlled by an electronic switch, the circuit comprising the spark gap and electronic switch being non-reactive. In Fig. 2, pulses are generated by a self-oscillating multivibrator comprising transistors 5, 6. The pulse frequency is adjustable by variable capacitors 20, 21, whilst the pulse duration is adjustable by variable resistor 19. The negative pulses from transistor 6 are amplified by three emitter followers 22, 23, 24 before being fed to control a pair of switching transistors 33, 34 which complete the circuit between a D.C. supply 1, the workpiece W and the eroding electrode E. In Fig. 3, the current through the gap between the workpiece W and the electrode E may flow in either direction. Transistors 40, 41, 49, 50 form a pair of common emitter coupled differential amplifiers in cascade. Negative feedback is provided via resistors 54 and 55. On negative half-cycles of a square wave from source 3, a negative pulse is fed to the base of transistor 60 and thence to the switching transistors 61, 62 so that the gap is polarized with the electrode E negative with respect to the workpiece W. On positive halfcycles from source 3, a negative pulse is fed to the base of transistor 60<SP>1</SP> so that the switching transistors 611, 62<SP>1</SP> become conductive, reversing the direction of current through the gap. The transistors may be replaced by vacuum valves, cold cathode valves, or thyratrons or ignitrons.
Patent GB-1507336-A (GB)
Title: Plasma torches
IPC: B23K10/00
Filed: 1975-10-15
Abstract: 1507336 Plasma torches INST ELEKTROSVARKI IM E O PATONA AKAD NAUK UKRAIN SSR 15 Oct 1975 [28 Oct 1974)42111/75 Heading H5H A plasma torch has an electrode I with a flat end face 20 and a high melting point insert 2, the end face 20 and side wall 21 of the electrode interconnected by a surface 22 having the shape of a part of the external surface of a torus and a nozzle 3 having a cylindrical internal surface 23 adjoining an end surface 24, a tapered internal surface 25 facing the electrode, the surface between the tapered surface and cylindrical internal surface having the form of a surface of a torus, the diameter of the flat end face of the electrode being 0À4-0À5 of the diameter of the side wall of the electrode and the radius of curvature of the surface between the tapered and cylindrical surfaces of the nozzle being equal to the length of the cylindrical portion of this surface. Preferably the spacing between the electrode and nozzle end faces = 1À5 diameters of the electrode flat face. The nozzle has a cooling fluid chamber 16. The electrode is hollow. The end of the electrode has an internal parabolic protuberance 12 to deflect cooling fluid coming in via tube 14. Thread 18 has passages to give the plasma forming gas a swirling motion.
Patent GB-1486595-A (GB)
Title: Linear measuring device
IPC: G01B3/12
Filed: 1974-09-27
Abstract: 1486595 Measuring material in continuous lengths M SINGEISEN 27 Sept 1974 42189/74 Addition to 1372786 Heading G1M Guide rollers 1 support moving material 2 whilst a measuring roller 4 mounted as shown in a bracket 6 having two ball pivots 10 is pressed down upon the material by a rod 13 connected to a diaphragm 14 moved by pressure in a cylinder 15. A preloadable spring 11 counterbalances the bracket 6 and a counter 16 operated by a photo-electric device 17 is provided.
Patent GB-1537532-A (GB)
Title: Spark advance control apparatus for internal combustion engines
IPC: F02P5/155
Filed: 1976-10-13
Abstract: 1537532 Ignition timing NISSAN MOTOR CO Ltd 13 Oct 1976 [22 Oct 1975] 42506/76 Heading F1B Spark timing advance control for an I.C. engine is effected by a mechanical device 10 producing first signals dependent on the rotation of the engine crank-shaft and on the load of the engine, a speed advance control 11 including a frequency to voltage converter (50), Fig. 2, (not shown), and a number of operational amplifiers (54) to (58) so that the magnitude of the output of control 11  varies in a predetermined non-linear manner, a pulse-width converter 12 including a ramp signal generator 40, the output of which is compared at 41 with the control 11 output, the comparator 41 producing pulses of a duration dependent on the output of control 11, and a monostable multivibrator 13 for detecting the trailing edge of each pulse to generate an ignition signal in ignition unit 14. The device 10 includes a rotor 30 carrying probes 31, 32 co-operating with arms 34 on a magnet 33 to induce signals in a coil 35. The magnet and coil are mounted on a pivoted support 26, the position of which is adjusted by a vacuum servo 20 responsive to inlet manifold depression. Again, Fig. 6, (not shown), the support may be adjusted directly on adjustment of the butterfly throttle valve (80). Also, Fig. 7, (not shown) the speed advance control (11) may include an input from an engine temperature sensor (90).
Patent GB-1386388-A (GB)
Title: Colour video tape recorder
IPC: H04N9/83
Filed: 1973-09-11
Abstract: 1386388 Colour television MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 11 Sept 1973 42577/73 Heading H4F A PAL colour television signal to be recorded on magnetic tape is split into its luminance and chrominance components, the luminance component being passed to a frequency modulator 15, and the chrominance component being frequency converted at 20 to a frequency band below that of the frequency modulated luminance component, constant phase bursts (which are additional to the normal PAL "swinging" bursts) being added to either the luminance or chrominance component before recording, these bursts being separated in the played back signal and used to phase control a signal used to frequency reconvert the chrominance component to its original frequency band. If the bursts are added to the luminance component prior to frequency modulation at 15 they may be at the frequency of the subcarrier of the frequency converted recorded chrominance component or at n/m times this frequency, where n and m are both integers. If the bursts are added to the chrominance component, bursts at the received subcarrier frequency are added to the chrominance component at the input to the balanced modulator (120, Fig. 6, not shown). In one embodiment, Fig. 1, the bursts (at frequency f<SP>1</SP>-4À43 MHz) added at 12 to the luminance component are separated, during playback, by a filter 30 receiving the output of frequency demodulator 26 and are passed to a balanced modulator 31 to derive bursts at a frequency f 1  which are fed to a phase comparator 32 and used to control the frequency of a variable frequency oscillator 37 providing an output at frequency f 1 -4À43 MHz which is passed to a balanced modulator 35 to provide a signal at frequency f 1  which is fed to phase comparator 32 and to a balanced modulator 38 receiving the played-back chrominance component which is then frequency reconverted to its original frequency band. The signal at frequency f 1 -4À43 MHz fed to burst gate 14 may alternatively be generated by a balanced modulator (41, Fig. 2, not shown) receiving the outputs of oscillators 19 (at frequency f 1 ) and 34 (at 4À43 MHz). This signal may alternatively be derived from an adder (44, Fig. 3, not shown) receiving the output of lowpass filter 21 directly and via a one-line delay line to add the received bursts of successive lines. Alternatively an adder (46, Fig. 4, not shown) may receive the output of filter 18 directly and via a one-line delay line, the resulting signal being frequency converted in a balanced modulator receiving the output of oscillator 19, to the frequency f 1 -4À43 MHz. If the added bursts are at a frequency n/m (f 1 -4À43 MHz) a frequency multiplier (31a, Fig. 5, not shown) multiplying the frequency by m/n is inserted between filter 30 and modulator 31.
Patent GB-1501249-A (GB)
Title: Field effect transistor
IPC: H01L21/762
Filed: 1975-10-17
Abstract: 1501249 IGFETs INTERNATIONAL BUSINESS MACHINES CORP 17 Oct 1975 [6 Nov 1974] 42595/75 Heading H1K In making an IGFET, Fig. 7, on a monocrystalline silicon substrate, after forming superposed layers of oxide, conductive polysilicon and silicon nitride respectively on the substrate the nitride is selectively removed to form a mask 22 covering at least the site of the channel, the exposed silicon is oxidized 24 throughout its thickness and apertures 24a formed through it to define opposite ends of the nitride coated polysilicon gate 20. Impurity is then diffused through the apertures to form source and drain regions 26, 28 of opposite type to the substrate, and source drain contacts 30 provided. In making the illustrated structure an isolation ring 16 is formed in a preliminary step by etching and then oxidizing a region exposed through an opening in nitride-on-oxide masking. Improved isolation may be achieved by using a wafer consisting of an epitaxial P layer on a P + substrate and extending the ring 16 down into the substrate. As described layer 18 is of phosphosilicate glass, arsenic is diffused to form regions 26, 28 and the contacts and a gate contact defined by pattern etching an overall layer of aluminium.
Patent GB-1460326-A (GB)
Title: Plant for 'he manufacture of half-finished felt buffs from wool  fibres and from a mixture thereof with other fibres
IPC: D04H17/00
Filed: 1974-10-03
Abstract: 1460326 Felting apparatus; collecting fibres V S E S PROEKTNO - MONTAZHNAYA KONSTRUKT KONTORA "SOJUZVAL MASHPROEKT" 3 Oct 1974 42864/74 Headings DIN and D1R In an apparatus for producing partly finished felt buffs, wool fibres optionally mixed with other fibres are carded at 4, blown along duct 1 by blower 3 to one of the cyclones 11, some air is removed at 13, the rest carries the fibres to the bent end 17 of pipe 14 and hence deposites them on a perforated sheet 16 acting as a detachable bottom wall to moulding cylinder 15. Water is sprayed onto the fibres by annular pipe 23 to reduce the height of the mass of fibres collected in cylinder 15. Valve 10 is moved to direct the fibre-carrying air stream to the other cyclone 11 with its associated moulding cylinder 15 whilst the cylinder 15 containing fibres and its bottom wall 16 are rotated about axle 73, Fig. 7, to a position above a compacting chamber 31, Fig. 3. Bottom wall 16 is then returned to its position underneath cyclone 11 and pipe 14 that are not in use. Circular felting plate 32 is then lowered to push the fibres from cylinder 15 to cylinder 31 whose bottom surface is a second circular felting plate 33 which is raised to compress the fibres between the plates. The plates are heated by steam and perforated to allow steam to contact the fibres. Each plate undergoes oscillations involving rotation through less than 360‹ by means of drawbars 59, 65. When the fibres have been felted plate 32 is raised, cylinder 15 is returned to its position under the unused cyclone 11 and pipe 14, plate 33 is raised to expel the partly finished fibre buff from compacting chamber 31, valve 10 is moved to direct the fibre carrying air stream to the empty cylinder 15 and a new cycle commences. As described the felting action of the plates 32, 33 is incomplete at the centre of the cylinder since the centre of each plate is stationary during the oscillation. In the embodiment of Fig. 6 the lower plate 33 is made up of two parts, a perforated disk 67 vertically displaceable by piston rod 48 within hollow outer part 68 which is oscillated by eccentric shafts 70.
Patent GB-1021964-A (GB)
Title: Process for blending polymer and wax
IPC: C08J3/00
Filed: 1964-10-22
Abstract: A process for blending polymer and wax compositions, comprises the steps (a) preblending an amount of a distillate paraffin wax or a high melting point wax obtained by fractional crystallization of a residual wax corresponding to from 5 to 20% by weight of the preblend into a solution of polymer in solvent, (b) recovering the preblend of polymer containing 5 to 20% by weight of wax by coagulation, and (c) blending the preblended polymer and wax with further amounts of wax. Ethylene/propylene copolymers are exemplified; other suitable polymers mentioned include polyethylene, polypropylene, vinyl ester polymers, polyacrylates, and unsaturated polyester resins. The polymers may be dissolved in the usual solvents or polymer reaction solutions may be used.  Coagulation is effected with steam. The polymer/wax preblend may be blended (c) with any type of wax.  The compositions may be used for coating paper.
Patent GB-968517-A (GB)
Title: Improvements relating to transductors
Inventor: JONES JOHN ERNEST
IPC: H01F29/14
Filed: 1961-12-05
Abstract: 968,517. Transductors. FERRANTI Ltd. Dec. 4, 1962 [Dec. 5, 1961], No. 43401/61. Heading H1T. A polyphase transductor comprises a core and yokes with portions which provide paths for D.C. flux only, A.C. flux being excluded by short-circuited windings wound around, and fixed with respect to, these portions. In one embodiment of the invention (Fig. 1), the core consists of one leg, 2, 3, for each phase, and two further legs 1, 4 forming a return path for the D.C. flux. The legs are joined by the yokes 5, 6 and the A.C. flux is excluded from the portions between the legs 1, 4 and the leg 2, 3 by short-circuited winding 10, 11, 12, 13. Another embodiment (Fig. 3) comprises two legs 21 and 22, 23 and 24, 25 and 26, for each phase, the D.C. windings 35, 36 being such that D C flux is in one direction in one leg of each phase and in the opposite direction in the other leg of each phase. The yokes 27, 28 have additional portions 37 and 42 which increase the crosssectional area to provide constant ,D.C. flux density (Fig. 4, not shown). A.C. flux is excluded by short-circuited windings 47, 48, 49, 50 which pass through slots 40, 41, 45, 46, the slots being positioned so that the crosssectional area between the slots and legs is equal to the cross-sectional area of the end portions of the yokes. The number of turns on some of the coils and the positions of some of the slits may be slightly different from those of the others.
Patent GB-929029-A (GB)
Title: Electrical capacitors and methods of making them
IPC: H01G9/00
Filed: 1959-12-22
Abstract: 929,029. Solid electrolytic capacitors. WESTERN ELECTRIC CO. Inc. Dec. 22, 1959 [Dec. 29, 1958], No. 43444/59. Class 37. A non-polar solid electrolytic capacitor comprises two electrodes 21, 22 of a film-forming metal e.g. Ta, Al, W, Cb, Hf, Ti, Zr, each preferably in the form of a coiled wire embracing part of the other electrode as shown, each electrode having thereon a layer 23 of a compound of a film-forming metal e.g. the oxide or aluminium fluoride, and a layer 24 of a semi-conducting material between the electrodes and in contact with the layers 23. The layer 24 forming the electrolyte may be manganese dioxide formed by the pyrolytic decomposition of manganese nitrate solution. Specification 747,051 is referred to.
Patent GB-1527173-A (GB)
Title: (thio)phosphoric acid esters and their use as herbicides
IPC: A01N57/16
Filed: 1976-10-20
Abstract: 1527173 Phosphorus esters containing heterocyclic groups BAYER AG 20 Oct 1976 [22 Oct 1975] 43528/76 Heading C2P The invention comprises phosphate and thiophosphate esters having the formula wherein R<SP>1</SP> is C 1 -C 6  alkyl, cyclohexyl or phenyl R<SP>2</SP> is C 1 -C 6  alkyl, R<SP>3</SP> is alkylene with 6 carbon atoms at least 5 carbon atoms thereof being in a chain, X is O or S and Y is O or S. They may be obtained either (a) by reacting a chloride of the formula  with a compound of the formula wherein M<SP>1</SP> is H, alkali metal or an ammonium group, or (b) provided Y is to be sulphur by reacting a compound of the formula where M<SP>2</SP> is an alkali metal or ammonium group with a halide: R<SP>2</SP>Hal. In (a) an acid binding agent may be included especially when M<SP>1</SP> is hydrogen and both methods (a) and (b) may be carried out in a solvent or diluent. The esters (I) have herbicidal properties and may be used as active ingredients in conventional herbicidal compositions which may also contain fungicides, acaricides and insecticides.
Patent GB-1484857-A (GB)
Title: Keyboard assemblies
IPC: H01H1/029
Filed: 1974-10-08
Abstract: 1484857 Retractive switches CHOMERICS Inc 8 Oct 1974 [29 Oct 1973] 43558/74 Heading H1N [Also in Division B6] A keyboard comprises a sheet 35 formed with protrusions 35a which when depressed move by a snap action to an over-centre position in which electrically conductive members 37, 39 are brought into contact, the protrusions returning to their original positions when released. The electrically conductive members include sheets bearing conductive patterns, e.g. the conductive sheet 37 and a printed circuit board 39, 40. One conductive member may be formed on the underside of the sheet 35. A separate key (91, Fig. 19, not shown) may be provided above the protrusion 35a.
Patent GB-961915-A (GB)
Title: Enclosed pressure-gas insulated busbar system
IPC: H02G5/06
Filed: 1962-11-19
Abstract: 961,915. Bus-bars. BROWN, BOVERI & CO. Ltd. Nov. 19, 1962 [Nov. 20, 1961], No. 43600/62. Heading H1A. In a pressure-gas insulated bus-bar system conductors R, S, T are tapped at both top and bottom outlets in turn. The conductor being tapped has a cranked portion in line with the outlets and the one normally in line is cranked out of the way.
Patent GB-914198-A (GB)
Title: Vehicle pneumatic suspensions
IPC: B60G17/015
Filed: 1960-12-19
Abstract: 914,198. Adjusting vehicle height. ALFA ROMEO S.p.A. Dec. 19, 1960 [Dec. 18, 1959], No. 43620/60. Class 108(2). A vehicle pneumatic suspension device comprises a pair of vessels mounted on opposite sides of the vehicle each containing a piston or diaphragm 8, 9 movable in response to relative movements between a vehicle wheel and the chassis, the vessels being connected to a regulating device containing two cylinders, 1, 11, each connected by a line 2, 2<SP>1</SP> to one of the vessels and having a movable wall or diaphragm 3, 3<SP>1</SP> provided with a threaded rod 4, 4<SP>1</SP> on which a gear-wheel 5, 5<SP>1</SP> is mounted, both gear-wheels meshing with a worm 6 which is operated by a reversible electric motor 7. Operation of the worm moves the walls or diaphragms 3, 3<SP>1</SP> in opposite directions to alter the vehicle height.
Patent GB-1007014-A (GB)
Title: Improvements in or relating to sulphonamides
Inventor: JUCKER ERNST
IPC: C07D307/52
Filed: 1961-12-06
Abstract: The invention comprises compounds of the formula <FORM:1007014/C2/1> wherein R is a furyl or tetrahydrofuryl radical, and their preparation by the action of an amine R.CH2.NH2, e.g. furfurylamine or tetrahydrofurfurylamine, on a 3-sulphamoyl-4-halobenzoyl halide, e.g. 3-sulphamoyl-4-chlorobenzoyl chloride.  Pharmaceutical preparations having diuretic activity and preferably for oral administration comprise the above compounds in admixture with a carrier.
Patent GB-1487898-A (GB)
Title: Bobbin-doffing mechanism for spinning and twisting frames
IPC: D01H9/10
Filed: 1975-10-24
Abstract: 1487898 Doffing mechanism EDERA OFFICINA MECCANICA TESSILE SpA 24 Oct 1975 [9 Jan 1975] 43725/75 Heading DID  A bobbin-doffing mechanism for spinning and twisting frames comprises a carriage 8 displaceable along the spindle line and provided with an array of bobbin gripping members 51 which circulate around the carriage in a closed loop such that a run adjacent the spindle line moves at the same speed as the carriage but in the reverse direction to hence remain stationary relative to the spindles, the grippers being simultaneously lowered in an open condition and raised in a closed condition to lift off a package and again opening on the return run to release the package. The raising and lowering mechanism comprises double air cylinders 28, 29 controlled by a cam operated valve 38. The grippers are also air operated and are fed via the piston rods of the cylinders 28, 29 to automatically open before and during lowering and close before and during raising. On the return run the valves 38 are again operated by a cam but the grippers cannot descend to rollers 55 which engage a horizontal surface and therefore the grippers merely open to release the bobbin. The array of grippers is carried by endless chains 25 which are driven by a gear 19 engaging a rack incorporated in the spinning machine. The cam plate 40 which operates the grippers can be lowered out of engagement with valves 38 to prevent operation. A detailed description of the vertical cylinders and associated gripper devices is given.
Patent GB-1525166-A (GB)
Title: Piperazine derivatives
IPC: C07D295/088
Filed: 1976-10-21
Abstract: 1525166 Piperazine derivatives PARCOR 21 Oct 1976 [22 Oct 1975 30 July 1976] 43748/76 Heading C2C Novel compounds I:- in which R 1  is H, halogen, CF 3 , C 1-6  alkyl or C 1-6  alkoxy, R 2  is (a) C 5-8  cycloalkyl (optionally substituted by one or more alkyl groups), or (b) phenoxyalkyl, or (c) phenylalkyl, furylalkyl or thienylalkyl optionally substituted in the ring by 1 to 3 of halogen, C 1-6  alkyl, or C 1-6  alkoxy, or (c) the group -C(R 3 R 4 )-C#CH, in which each of R 3  and R 4  is H or C 1-6  alkyl or R 3  and R 4 , together with the adjacent C atom, represent a saturated 5-7 membered carbocyclic ring, and n is 2 or 3, and acid addition and quaternary ammonium salts thereof, are prepared by reacting a compound II: in which X is halogen, with a compound R 2 OH, followed, if desired, by converting a free base into an appropriate salt. Pharmaceutical compositions having analgesic, sedative and tranquillizing activity, for oral, parenteral or rectal administration, comprise one of the above novel compounds together with a pharmaceutical carrier.
Patent GB-1056436-A (GB)
Title: Improvements in and relating to voltage control circuits
Inventor: BARANY THOMAS ERNEST
IPC: H03G11/08
Filed: 1962-11-20
Abstract: 1,056,436. Transistor circuits. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Oct. 29, 1963 [Nov. 20, 1962], No. 43861/62. Heading H3T. An amplifier is arraged to limit the rate of change in output voltage by being provided with feedback via a Miller capacitor C and a further feedback path via a diode bridge D. As shown in Fig. 1, the voltage across the upper and lower points of the diode bridge D, relative to supply voltages + V, -V, is adjustable by ganged resistors VR1, VR2 so that the bridge normally passes a bias current. When the input voltage from potentiometer P changes, capacitor C will charge or discharge (as at G in Fig. 3, not shown) at a rate determined by the setting of resistors VR1, VR2 until the voltage across the load L approaches its new steady state value (FV), when feedback via resistor RB causes the bridge to become conductive so that the output voltage across load L becomes stabilized at its new value. In Fig. 2 (not shown) the ganged resistors are replaced by a transistor having adjustable voltage fed to the base.
Patent GB-1477054-A (GB)
Title: Washing machine control
IPC: D06F33/02
Filed: 1974-10-10
Abstract: 1477054 Washing machines SOC ANON INDUSTRIELLE IZOLA 10 Oct 1974 43867/ 74 Heading D1A Automatic washing machine includes a wash motor 4 which can be energized selectively while the liquid inlet valve is open. Thus the machine washes during filling, if desired, to speed up cleaning of very soiled laundry. The circuit includes a low level pressure switch 1 and a high level switch 2. When switches 6, 8 are closed the inlet valve opens by energization of solenoid 3 filling the drum. At the low level the switch 10 moves over and energises the motor 4, provided the programmer has set switch 9 closed. When switch 11 moves over, the drum being full the valve solenoid 3 cut off. In both cases the time control motor 5 continues to operate if it is desired that the drum be stationary switch 9 is selected to remain open, and thus neither of motors 4 and 5 operates until the high level switch 2 moves over.