baber/WOPTO huggingface dataset:
Patent GB-1310799-A (GB)
Title: Circuit for periodically reversing the polarity of a direct current potential supply line
IPC: H02M7/515
Filed: 1971-10-28
Abstract: 1310799 Control systems for consuming apparatus GENERAL MOTORS CORP 28 Oct 1971 [23 Nov 1970] 50182/71 Heading H2H [Also in Division H3] The voltage at a supply line 16 is periodically reversed, e.g. to extinguish thyristors connected thereto, by a circuit comprising a D.C. supply 8 connected to the line through an inductor 15, a capacitor 25 in series with a switching device 35 being connected across the supply and inductor, means for charging the capacitor and means responsive to the voltage across capacitor reaching a given value to cause the capacitor to discharge through the switch. As shown the line 16 is the supply line for a SCR feeding a load 72 such as a lamp or motor, the reversals of the polarity of the line being of such short duration as to have negligible effect on the mean current supplied if the triggering voltages has not been removed and the thyristor is therefore returned to its conductive state after the reversal. The reversals are effected by charging a capacitor 25 from a half wave rectified supply 47, 56 until the voltage is sufficient to break down a diode 60 and fire thyristor 35. This discharges the capacitor through the inductor 15 which may be the self inductance of a connection, the voltage thus produced across it being greater than that of the supply 8 and of reverse sense so that if the triggering voltage for thyristor 75 has been removed it extinguishes. The supply for charging the capacitor is derived via rectifier 56 from pulses derived from amplifier 55 driven by oscillator 11. During standby conditions, an initiating signal source 91 makes a transistors 50 and 40 non-conducting so that when the charge on the capacitor reaches a predetermined value less than that required to break down diode 60, a transistor 31 conducts and-stops the oscillator and thus the charging. Leakage of the charge will allow the oscillator to restart and effect a replacement.
Patent GB-1158882-A (GB)
Title: Improvements in or relating to Radar Aerials
Inventor: RICHARDS CLEMENT JOHN
IPC: H01Q15/16
Filed: 1965-11-26
Abstract: 1,158,882. Aerials. PLESSEY CO. Ltd. 11 Nov., 1966 [26 Nov., 1965], No. 50479/65. Heading H4A. An aerial comprises a reflector constituted by metallized fibreglass panels 1 supported on the front surface of an inflatable backing structure 2 which is made up of a number of intercommunicating cells of circular cross-sections whose axes extend as circular arcs about a rotational axis 3. The panels 1 are two-dimensionally curved and are held in their correct positions by means of stems (4), Fig. 2 (not shown), with universal joints (6), which extend from the structure (2). A box-shaped part 7, Fig. 1, serves as an anchorage for the structure 2 and as a container for it when deflated. A part 8 extends from the part 7 towards the axis 3, and a further extension 9 carries a primary feed unit 10. Wall portions 11 of the part 7 may be folded down on hinges 12 out of the way of radiation. Nylon guy ropes 13 may be provided between the structure 2 and the base.
Patent GB-1245620-A (GB)
Title: Antilocking control system for vehicle brakes
IPC: B60T8/76
Filed: 1968-10-25
Abstract: 1,245,620. Anti-skid brake systems. TELDIX G.m.b.H. 25 Oct., 1968 [28 Oct., 1967], No. 50716/68. Heading F2F. In an anti-skid brake control system deceleration of a wheel is detected by comparing at 12 the instantaneous wheel speed V R  (from tachogenerator 10) with a stored speed signal VF (representing the wheel-speed as it was shortly before) and obtained from a circuit 11 which can only follow speed decreases slowly. This reduction in wheel-speed signal is fed to a low threshold circuit 14 to control valve E cutting off brake pressure, and a high threshold circuit 13 controlling valve A to release brake pressure for high deceleration. When the wheel subsequently starts to accelerate a + b signal (from any suitable acceleration transducer) resets flip-flop 17 to close valve A but holds E closed through OR circuit 15 until the wheel reaches road speed and acceleration stops. The storage circuit 11 may comprise a capacitor 35, Fig. 4, charged through a diode 37 but discharging slowly through resistor 36. Alternatively an hydraulic system with a constriction and a one-way valve in parallel may be used, Fig. 5 (not shown).
Patent GB-1158363-A (GB)
Title: An Optical System for Cameras
Inventor: ROUET PAUL
IPC: G03B3/02
Filed: 1967-11-08
Abstract: 1,158,363. Optical systems. ATELIERS DE CONSTRUCTIONS ELECTRIQUES DE CHARLEROI. Nov. 8, 1967 [Nov. 9, 1966], No.50738/67. Heading G2J. An optical system comprises an entrance objective 4 forming a real image 7 which is scanned by a pivotable microscope objective 3 and the image transmitted via a relay lens 2 into an associated camera, e.g. a Vidicon tube 1 of a television camera. Preferably there are mechanical means 9-17 pivoting the scanning objective, and/or mechanical means adjusting the focal lengths of parts 4, 2 when these are variable focal length lenses and/or mechanical means 19, 20 for rotating the scanning objective about the optical axis of the lens 2. In this way, the orientation of the camera is kept fixed while a larger than normal space is observed at different depths of focus. The entrance objective 4 may be pivotable, if a very large space is to be observed, or the part 4 may be a wide angle objective. Action of the mechanical means 9-17 pivots the scanning objective and advances or retracts the part 17 to keep the object plane of the objective 3 coincident with the plane of the image 7, whatever the inclination of the objective 3.
Patent GB-1219415-A (GB)
Title: Method and apparatus for movement of fluids by electro-magnetic means
Inventor: HERMAN HARRY HIRSCH JR
IPC: H02K44/04
Filed: 1967-11-08
Abstract: 1,219,415. Pumps operating by electromagnetic interaction with fluids. H. H. HERMAN Jnr. 8 Nov., 1967, No. 50755/67.. Heading H2A. [Also in Division G1]  In moving an electrically conductive fluid such as a liquid, gas, vapour or fluidized solid, the movement caused by a rotating magnetic field produced in the fluid is superimposed on the movement caused by a Lorentz force as produced by an electric current flowing in the fluid through a stationary magnetic field. The rotating magnetic field is set up by A.C. energized coils 92, direct current is caused to flow between terminals 93, 94 and the stationary field is produced by permanent magnets 91, as shown, or by electromagnets. The invention may be applied to toroidal and spherical gyroscopes, Figs. 1, 1a 3, 3a (not shown, see Division G1).
Patent GB-1263250-A (GB)
Title: Spray drying and prilling
Inventor: PODILCHUK ILIA
IPC: B01J2/02
Filed: 1968-10-29
Abstract: 1,263,250. Spray drying. FISONS Ltd. 20 Oct., 1969 [29 Oct., 1968], No. 51250/68. Heading BIB. Particulate material is obtained from a solution, e.g. a solution containing monoammonium phosphate, by spraying it down a tower in which a current of air is flowing, the internal walls of the tower being, at least partly, covered by an impervious flexible lining, e.g. made of plastics material, such as P.V.C. or polyethylene, or preferably of canvas or nylon mesh coated with P.V.C. Such a lining may be obtained by attaching sheets of the flexible material at a number of points on the inside surface of the tower. The flexible sheets move or pulsate due to transient movements of air in the tower, and troublesome build up of solidified material on the walls of the tower is prevented. The apparatus can also be used for prilling.
Patent GB-1483010-A (GB)
Title: Rotary compressor
IPC: F04C18/22
Filed: 1975-12-16
Abstract: 1483010 Rotary positive-displacement fluidmachine BENDIX CORP 16 Dec 1975 [14 Jan 1975] 51486/75 Heading F1F In a compressor having a trochoidal working chamber 3 in which a rotor 11 revolves in a planetary manner, inlet and outlet ports 29, 31 comprise transverse slots 33, 35 either the slot 33 or each of these slots being situated such that when an adjacent apex seal 23 is in register therewith, as shown, the pressures in spaces C, S are equal to the pressure in the inlet port 29. This arrangement is said to make provision of a check-valve in the port 29 unnecessary and to improve the performance of the compressor at high speeds. Lubrication of the seals 23 may be effected by a wick 47, which is fed with oil through a capillary tube 43.
Patent GB-1205977-A (GB)
Title: Strainer bag construction
IPC: B01D29/11
Filed: 1967-11-13
Abstract: 1,205,977. Filter bag. AMERICAN FELT CO. 13 Nov., 1967 [15 Nov., 1966], No. 51516/ 67. Heading B1D. A filter bag is made from a single piece of needled felt, of nylon, rayon, polypropylene, polyester, acrylic or natural fibres, and sewn along multiple row seams 11, 13. Seams 13 may be straight or curved as shown and intersect at point 12. Seam 11 may extend down 'to point 12, using a blank as in Fig. 8 (not shown) or may be aligned with seams 13 (Fig. 4, not shown). Optimum bursting strength is achieved with seams 13 inclined at 32 to 45 degrees to a transverse plane. The open end of the bag is folded over a reinforcing hoop by which the bag is supported on a flange through which liquid is delivered. Filtrate tends to run from lowest point 12 of the bag, but an extension (Fig. 12, not shown) can improve this. The bag may be reinforced by an outer muslin bag (Figs. 6, 9, not shown), made larger to allow the felt bag to expand. Or the felt bag is located in a wire mesh support (Fig. 7, not shown).
Patent GB-1446940-A (GB)
Title: Process and apparatus for analysis by gas chromatography
IPC: G01N30/40
Filed: 1973-11-09
Abstract: 1446940 Gas chromatography COMPAGNIE FRANCAISE DE RAFFINAGE 9 Nov 1973 [10 Nov 1972] 52100/73 Heading B1H A process for analysing a mixture comprising at least one permanent gas (defined) and hydrocarbons by gas chromatography, comprises the steps of (a) introducing into a flow of carrier gas a sample of the mixture to be analysed at a temperature such that all the species present in the mixture are vaporized; (b) retaining the heavier hydrocarbons in a trap through which the permanent gases pass and any lighter hydrocarbons pass, (c) separating said lighter hydrocarbons in the trap or in a first column, (d) introducing the gases passing said trap and separated in said first column or said trap into a first detector and recording the identifying signals given off by said detector, (e) reversing the direction of flow of the carrier gas to free the heavier hydrocarbons from the trap, (f) separating said heavier hydrocarbons in at least one second column, and (g) passing the separated heavier hydrocarbons into a second detector and recording the identifying signals given off by said second detector. By "permanent" gases are meant hydrogen, nitrogen, oxygen, carbon dioxide, carbon monoxide, and the noble gases. As described, a mixture of hydrogen and hydrocarbons is passed through an adsorbent trap in admixture with argon. Hydrogen, methane and ethane pass the trap and are conventionally separated in a first column and identified by katharometer. Alternatively the trap may separate these three gases in time so that they emerge successively. These gases then pass through a second column to a flame ionisation detector where the hydrocarbons are detected again. The argon flow is then reversed and the trap heated to free the adsorbed heavier hydrocarbons which are passed straight to the second column and flame ionisation detector.
Patent GB-1530140-A (GB)
Title: Mechanical vibrator
Inventor: ISHIDA FUJIO
IPC: H03H9/215
Filed: 1975-12-24
Abstract: 1530140 Electronic watches CITIZEN WATCH CO Ltd 24 Dec 1975 [24 Dec 1974 23 June 1975 8 July 1975 21 Oct 1975 5 Nov 1975 8 Nov 1975] 52922/75 Heading G3T [Also in Division H1] An elongate mechanical vibrator, for e.g. a timepiece, is supported at one end from a substrate having, on one surface, metallic layers connected to the electrodes of the vibrator and, on the other surface, a single metallic layer connected to the inner surface of an evacuated housing. Figs. 4 and 9 show cross-section and plan respectively of two different embodiments both comprising a quartz or lithium tantalate Piezo-electric tuning fork vibrator 82 having an end (base) portion 82a secured by solder or conductive cement to a ceramic substrate 74, in turn secured to the base portion 70 of a two-part hermetically sealed container 68. The upper face of the substrate bears two areas 97, 98 of metallization to which are secured the electrodes (not shown), of the vibrator and the heads of a pair of leads 88, 90 which extend through appropriate apertures to the exterior of the casing. One or both of the leads may be in the form of a tube through which evacuation of the container may be effected. A shock-absorbing metal plate may be soldered between the ceramic substrate and the container, see Fig. 10 (not shown), the plate being made of an alloy which is thermally compatible with the ceramic. The heads of the leads 88, 90 may either stand proud of the upper surface of the substrate (as shown), or may be countersunk into this surface in which case the end portion of the vibrator may extend over the entire surface of the substrate, see Figs. 11-13 (not shown). The casing may have a transparent window for transmission of a laser beam for tuning the vibrator, see Fig. 6 (not shown). Fig. 16 shows the casing 68 containing the vibrator 82 secured by leads 88, 90 (one only shown), to a printed circuit board 110. The board is held by spacers 114, 116 to a base-plate 112 and the casing 68 is spaced from the board and the plate by gaps 130, 138. Shock-absorbing members 126', 128' made of a conductive elastic material may be inserted between the casing and the board and plate respectively. The shock absorbers are secured to the casing.
Patent GB-1162835-A (GB)
Title: Improvements in or relating to Isoindole Compounds
Inventor: HOULIHAN WILLIAM JOSEPH
IPC: C07D209/44
Filed: 1966-11-25
Abstract: 1,162,835. Isoindoles. SANDOZ Ltd. 25 Nov., 1966 [7 Dec., 1965], No. 52951/66. Heading C2C. Novel compounds of the general formula in which R 1  signifies a phenyl radical which may optionally be substituted in the 4-position by a chlorine atom, n signifies 1 or 2 and R 2  signifies a hydrogen atom or an alkyl radical having from 1-4 carbon atoms when n is 2 or an alkyl radical having from 1-4 carbon atoms when n is 1 and their acid addition salts are obtained in a process wherein a compound of the formula is reduced in an organic solvent which is inert under the reaction conditions with a complex aluminium hydride and the resulting compound I is then optionally converted into its acid addition salts by reacting with an inorganic or organic acid. Pharmaceutical compositions having antidepressant, analgesic, anti-inflammatory, anaesthetic and anti-arrythmic activity are administered orally or parenterally.
Patent GB-1164476-A (GB)
Title: Improvements in and relating to Data Transmission Systems
Inventor: GERBIG KURT
IPC: H04L13/08
Filed: 1966-11-28
Abstract: 1,164,476. Data transmission systems. INSTITUT FœR NACHRICHTENTECHNIK. 28 Nov., 1966, No. 53090/66. Heading H4P. A buffer store for use in a digital or analog data transmission system comprises a store 6 having a respective section for each of a number of destinations. As described, when a subscriber calls the store by way of one of a number of lines 10, a stage 2 connects an answer-back generator 1 to the line via unit 9. After reception of the answer-back signal the subscriber sends the address of the required destination via unit 9, stages 2, 5, and code converter 4, to comparator 3 where it is compared with the stored addresses of all the possible destinations. The subsequent data from the calling subscriber passes via unit 9, stages 2, 5, 8, and code converter 7, to the section of the store 6 appropriate to the called address, selected by the comparator 3. The store comprises magnetic or punched tape or magnetic disc. The store is read out to the called address later.
Patent GB-1411017-A (GB)
Title: Rear converter lens
IPC: G02B13/02
Filed: 1973-11-16
Abstract: 1411017 Negative rear converter lens YABE OPTICAL INST Mfg CO Ltd 16 Nov 1973 [1 May 1973] 53286/73 Heading G2J A rear converter lens of negative refractive  power for positioning behind a master lens M e.g. of Tesser, Sonnor or Gauso type to let it function as a telephoto lens, having six lens the first of negative power with slight convex surface towards object; the second positive; the third negative with slight convex surface towards object; the fourth and fifth respectively positive and negative with facing concave surfaces; and the sixth positive; the relation between the combined focal length of all lens F, that of first four lens F 1.2.3.4.,  that of the fifth and sixth F 5.6.,  total axial length of converter lens L, the focal lengths of each lens F 1 , F 2  ... F6, the radii of curvature of each lens surface R 1 , R 2  ... R 12 , the axial spaces between the lens S 1 , S 2  ... S 5  and the refractive index of each lens N 1 , N 2  ... N 6 , being as follows: |F 1 | + |F 3 | # |F 2 | + |F 4 |, |F 1.2.3.4 | # 2.5|F |, |F 5 | # |F 6 |, F 5.6  # 1.7 F, |F 1.2.3.4 | # I 1.5(F 5.6 )|, L # F/1.8, S 4  # F/number of lens in the whole system, |R 1 |>|F|>|R 2 |, |R 3 |<|F|<|R 4 |, |R 5 |>|F|>|R 6 |, F>R 9 >F/N 5 , N 1 #(N 1 +N 2 )/2, N 3  # (N 3  + N 4 )/2, N 5  # (N 5  + N 6 )/2. Optical data are given for two embodiments of the converter lens.
Patent GB-1108400-A (GB)
Title: System for controlling extruders for plastics processing
IPC: B29C48/92
Filed: 1965-12-16
Abstract: 1,108,400. Extruder drive systems. W. SPINDLER. 16 Dec., 1965 [18 Dec., 1964], No. 53464/65. Heading B5A. A screw extrusion moulding machine comprises an axially reciprocable screw 2 rotated by a hydraulic motor 4 and reciprocated by hydraulic actuation of a piston 6. The output of the machine is controlled by a pressure measuring device 21 provided with contacts 23a, 23b connected to electrohydraulic valves 25a, 25b via electro-magnets 24a, 24b. If the pressure in chamber 17 of cylinder 5 falls below a predetermined value, contact 23a is actuated and valve 25a is opened to allow a pump 8 to deliver hydraulic medium via lines 26a, 28 and 22. If the pressure in chamber 17 increases above the predetermined value, i.e. the backpressure on screw 2 is too great, contact 23b is actuated, valve 25a closes, valve 25b opens, and hydraulic medium returns from chamber 17 via lines 22, 28 and 26b to reservoir 7. Motor 4, supplied with hydraulic medium by pump 8 from reservoir 7 is provided with a revolution counter 12 and indicator 13 and is controlled by a pressure sensitive device 33 situated between an annular choke 15 and extrusion nozzle 16. Device 33 is connected to a further pressure measuring device 34, similar to device 21, which by a line 41 controls the operation of a flow-rate meter 10 via a motor 42. To compensate for change of nozzle 16, device 34 is also connected to a motor-position meter 29 via quotient meters 43, 45 and an indicator 31 which may be calibrated in viscosity values. If a single nozzle is used quotient meter 45 may be dispensed with, Fig. 2 (not shown), and if only one pressure measuring device is used this may be incorporated as shown in Fig. 3 (not reproduced). Meter 29 may transmit visual or audio-signals. Barrel 1 is provided with electric heaters 19a-19c.
Patent GB-1378399-A (GB)
Title: Current-carrying member for electric circuit interrupter and method for making siad member
IPC: H01H1/02
Filed: 1972-11-21
Abstract: 1378399 Vacuum switches ALLIS-CHALMERS CORP 21 Nov 1972 [23 Nov 1971] 53699/72 Heading H1N [Also in Division C7] A vacuum type circuit interrupter incorporates a pair of contacts 14, 16 integral with studs 18, 20 and made of a copper-tellurium-phosphorus alloy which has been heat-treated (see Division C7). The interrupter also includes borosilicate glass envelope 12, stainless steel end plates 13, 15, sleeves 17, 19, arc shield 24 and disc shields 26 of nickel and bellows 22. After assembly the interrupter is subjected to an initial spark conditioning using 60 Hz high voltage under a static pressure of 5 x 10<SP>-6</SP> and it is then immersed in an oil bath with a contact gap of 0À25 inch while an alternating voltage across it is progressively increased to 50 kv. Finally the interrupter is heated slowly to 400‹ C. over 16 hours in a continuously evacuated furnace. After holding for 4 hours it is slowly cooled and sealed off at 150‹ C.
Patent GB-1136190-A (GB)
Title: Anti-diabetically effective sulphonamides
IPC: C07D239/69
Filed: 1967-11-27
Abstract: 1,136,190. Pyrimidine sulphonamides. C. F. BOEHRINGER & SOEHNE G.m.b.H. 27 Nov., 1967 [29 Nov., 1966], No. 53841/67. Heading C2C. Novel sulphonamides of the general Formula I wherein A is an unsubstituted or substituted alkyl, alkenyl, aryl, aralkyl, aryloxyalkyl, arylmercapto alkyl, cycloalkyl, cycloalkenyl, thienyl or furyl radical or an unsubstituted or substituted alkoxy, alkenyloxy, aralkoxy, cycloalkoxy, cycloalkyl alkoxy, cycloalkenyloxy or cyclo alkenyl alkoxy radical or a radical of the formula where V and W which may be the same or different, are hydrogen atoms or unsubstituted or substituted alkyl, cycloalkyl, aryl or aralkyl radicals or together with the nitrogen atom to which they are attached form an unsubstituted or substituted saturated heterocyclic ring, R 1  is a hydrogen atom or a C 1 -C 3  alkyl or aralkyl radical, X is a branched or straightchain hydrocarbon radical containing up to 4 carbon atoms, R 2  is a C 1 -C 5  alkyl radical and R 3  is a hydrogen atom or an unsubstituted or substituted alkyl, cycloalkyl, aryl, aralkyl, alkoxy, alkoxy alkyl, or alkoxy alkoxy radical, whereby R 2  and R 3  can together also form a ring of 3 to 5 methylene groups which ring can be interrupted by oxygen or sulphur atoms, and the physiologically acceptable salts thereof are prepared by reacting a compound of the formula in which A, R, and X are as defined above and n is 0, 1, or 2 with a 2-aminopyrimidine, which is substituted in the 4- and 5-position by R 3  and R 2  respectively, whereafter, if necessary, the product obtained is oxidized to the sulphonamide. Compounds of Formula I are also obtained by reacting a benzene-sulphonyl guanidine of the general formula with a compound of the formula where Z is a hydrogen atom or an alkoxy radical, or with a functional derivative thereof, whereafter, when the pyrimidine ring in the product contains a hydroxyl group in the 6-position, this is replaced by a hydrogen atom by first converting into the corresponding halogen compound, followed by reductive dehalogenation. Compounds of Formula I are also obtained by reacting a compound of the general formula with a reactive derivative of an acid of the formula A.COOH, or by reacting a compound of the formula with a pyrimidine derivative of the formula where T is a reactive ester group or a low molecular trialkyl-ammonium group. 4 - (# - aminoethyl) - N - [4 - methyl - 5 - isobutyl - pyrimidinyl - (2) -] - benzene sulphonamide is prepared by the alkaline hydrolysis of the corresponding urethane. 4 - (# - aminoethyl) - N - [5,6,7,8 - tetrahydroquinazolinyl - (2)] - benzene sulphonamide is prepared by the alkaline hydrolysis of the corresponding urethane or N-acetyl derivative.