baber/WOPTO huggingface dataset:
Patent GB-1250935-A (GB)
IPC: H01F29/14
Filed: 1969-06-02
Abstract: 1,250,935. Controlled non linear inductors. SELCO ELETTRO COSTRUZIONI S.A.S. 2 June, 1969 [7 June, 1968; 16 Nov., 1968], No. 27911/69. Heading H3B. [Also in Divisions G3 and H2] In a series voltage regulator having an input at L and an output at M, coils W 1 -W 3  are wound on a magnetic core, the voltage drop depends on the magnetic flux coupling with short circuited winding W 3  and hence on the relative currents in opposed windings W 1 , W 2  as determined by a diode D, or a transistor and variable resistor P shunting W 1 . When resistor P has a high value the currents in W 1  and W 2  are identical and there is no net flux coupling W 3  so that the regulator impedance is high. If resistor P has a low value, positive current half cycles are shunted through D and P and the asymmetric current flowing in W 1  produces an unbalanced flux coupling W 3 , the resulting current in W 3  causing the regulator impedance to drop. The increased current in W 1  and W 2  also reduces the impedance further due to saturation of the core. W 3  and its short circuiting diode may be replaced by a short circuit ring. In Fig. 2 (not shown) a switch (I, II) is provided which allows the regulator to be short circuited from L to M when maximum output power is required. In Fig. 3, the short circuited winding W 3  is included in the circuit which shunts W 1 .
Patent GB-1256477-A (GB)
IPC: C09B29/033
Filed: 1970-08-10
Abstract: 1,256,477. Dyes containing a dialkyl succinate residue. CASSELLA FARBWERKE MAINKUR A.G. 10 Aug., 1970 [11 Aug., 1969], No. 38375/70. Heading C4P. Monoazo dyes free from water-solubilizing groups have the formula wherein D is the residue of a benzene, naphthalene or heterocyclic diazo component; B is a p-phenylene or p-naphthylene radical; R 1  and R 2  are alkyl or monosubstituted alkyl having 1-8 carbon atoms; and R 3  is hydrogen, alkyl or monosubstituted alkyl having 1-8 carbon atoms. The alkyl groups may be substituted by cyano, phenyl, hydroxy, alkylsulphonyl having 1-4 carbon atoms, alkanoyloxy containing 2-5 carbon atoms, alkoxy containing 1-4 carbon atoms, alkoxycarbonyl containing 2-5 carbon atoms or phenoxymethanoyloxy. The dyes are obtained by diazotizing an amine D-NH 2  and coupling with an amine of formula The compounds are used for dyeing and printing synthetic hydrophobic materials.
Patent GB-1256526-A (GB)
IPC: H05K3/46
Filed: 1968-12-20
Abstract: 1,256,526. Printed circuits. RCA CORPORATION. 20 Dec., 1968 [26 Dec., 1967], No. 60573/68. Heading B5N. [Also in Division H1] A multilayer printed circuit provided with through holes is made by laminating two substrates having registered through holes using a controlled flow adhesive layer having like registered holes and such that the through holes of the printed circuit remain unobstructed by the adhesive after lamination. A three doublesided circuit board multilayer structure is formed by initially preparing the three boards 20 by drilling or etching the substrates with the desired location of holes 22 and then forming the conductor patterns and plated through linings by an electroless and electroplating process employing a negative resist pattern. Two adhesive coated dielectric substrates 30 are then punched or drilled to form holes 32 in register with the holes 22 and the assembly laminated. Alternatively, the controlled flow adhesive may be applied directly to the planar surfaces of the double sided boards using roller coating or printing techniques leaving the through holes exposed. After laminating, the assembly is subjected to a further electroless and electroplating process to form the required through connection. In an alternative embodiment, Fig. 3 (not shown), the assembly is built up from one double sided board. Two dielectric substrates are precoated on one side with a controlled flow adhesive and punched or drilled to form holes in registration with the plated through hole within the double sided board. The board is then sandwiched between the adhesive surfaces of the dielectric substrates and circuitry formed on the exposed surfaces of the dielectric substrates together with plating of the through holes and holes passing through only one substrate and providing buried layer interconnections. The process is repeated to build up the required number of layers. Instead of using controlled flow adhesives coated directly on to the dielectric substrates, thin unsupported flow adhesive films or adhesive films coated on both sides of a thin insulating support film can be used. The multilayer circuit boards may be fabricated from inorganic substrates such as ceramic using inorganic bonding layers such as glass frit. Instead of plating the sides of the holes the holes may be filled with metal, Fig. 4 (not shown). Adhesive.-The adhesive may be in the form of a double resin adhesive system wherein one resin reacts at a relatively low curing temperature to increase the viscosity of the adhesive and the other resin reacts at a relatively high temperature to effect the bonding, e.g. a mixture containing a high temperature di-functional epoxy resin and a low temperature polyfunctional epoxidized novolak resin such as phenol formaldehyde condensate. Other reactive components such as phenolics, polyamides, or polysulphides can be used. Thickening agents such as silica can be added.
Patent GB-1259311-A (GB)
IPC: H01F38/18
Filed: 1969-03-19
Abstract: 1,259,311. Transformers; cathode-ray tubes. COMMISSARIAT A L'ENERGIE ATOMIQUE. 19 March, 1969 [20 March, 1968; 11 March, 1969], No. 14439/69. Headings H1D and H1T. [Also in Division H2] Electrodes 104 1  ... 104 12  (Fig. 9) of a particle accelerator, are supplied with direct voltage of progressively increasing magnitude to earth, by rectifier units 116 1  ... 116 12  (see Division H2). The rectifier units may be embedded in plates or rings of epoxy resin (Fig. 11) and the rings stacked in alternate relation to the electrodes. Aligned holes in the rings form the accelerator tube and electrically charged particles may be directed through outlet 106 upon a target, to produce X-rays. The output voltages of the rectifier units are connected in series additively as shown Fig. 1. Each unit, e.g. unit 22 1 , comprises a ferrite core 24, carrying a secondary winding 26 1  feeding a rectifier and filter 28 1 . The cores are coupled to a common " transfer " coil 10 formed by a single conductor loop insulated by a polyethylene tube which may contain gas or liquid; or the loop may be rendered superconductive. The loop in Fig. 1 is inductively coupled via a step-up frequency changer 16 to an A.C. source 14. In a 3-phase assembly, Fig. 6 (not shown), the " loops " are straight rods, one to each phase. The assembly is enclosed in a sealed metal bell housing filled with pressurized gas insulant, e.g. sulphur hexafluoride.
Patent GB-1264766-A (GB)
IPC: G06M3/08
Filed: 1970-07-17
Abstract: 1,264,766. Petrol pumps. MICRO-MAGNETIC INDUSTRIES Inc. 17 July, 1970 [23 July, 1969]; No. 34745/70. Headings G4D and G4H. A self-service petrol pump operates a remote register 276 through a switch 274 actuated at each revolution of a shaft 269. The cost and quantity registers C, Q are zeroized in known manner by turning a handle 168 which disengages these registers from driving wheels and engages pinions on their shafts with a zeroizing gear. At the same time a cam 273 which actuates the switch 274 is brought to home position through a mutilated bevel gear (272, Fig. 4, not shown). The switch 274 may be operated by a magnet or replaced by a photo-cell.
Patent GB-1265930-A (GB)
IPC: A61K/
Filed: 1969-04-18
Abstract: 1,265,930. Anti-seborrheic compositions. L.'OREAL. 18 April, 1969 [19 April, 1968], No. 61867/70. Divided out of 1,238,095. Addition to 1,051,870. Heading A5B. [Also in Division C2] Anti-seborrhoeic compositions comprise an aqueous solution of compounds of the formula R.S.CH 2 .CH(NHCOR') (CO- 2 -H or -Me) where R is -CH 2 CH 2 CO 2 H, PhCH 2 - or Ph 3 C- and R' is Me, PhCH 2  or #-pyridino; excluded compositions are those containing triethanolamine.
Patent GB-1267046-A (GB)
IPC: A61N1/375
Filed: 1969-07-30
Abstract: 1,267,046. Implantable pacemakers. CORDIS CORP. 30 July, 1969, No. 38144/69. Heading ASR. An implantable pacemaker comprises a capsule 14 containing a battery and a pulse generating circuit which has an open power circuit, and a lead for transmitting pulses from the pulse generating circuit to an electrode 30, said lead having a plug 26 with means for closing the power circuit when the plug is attached to the pacemaker. The means for closing the power circuit may comprise a loop 28 of wire between two pins 22', 24', which loop completes the pacemaker power circuit when the plug is engaged. A second pair of pins 18', 20', connects the output of the generating circuit to the electrode. Alternatively, a magnet (34) Fig. 3 (not shown), on the plug may close a normally open magnetically operated switch (33) in the capsule when the plug is attached.
Patent GB-1294896-A (GB)
IPC: B41N1/14
Filed: 1969-11-21
Abstract: 1294896 Photo-curable materials W R GRACE & CO 21 Nov 1969 [21 Nov 1968] 57048/69 Heading G2C A photo-curable material comprises a porous support having a water transmission rate defined as amount of water (in gms) multiplied by support thickness (in mls) divided by the area of the support (in metres) multiplied by the time (24 hrs)) of at least 100 having absorbed therein and at the surface thereof a liquid photo-curable composition comprising (a) from 2 to 98 parts by weight a polyene containing at least 2 unsaturated carbon to carbon bonds per molecule (b) 98 to 2 parts by weight of a polythiol containing at least 2 thiol groups per molecule and (c) from 0À0005 to 10 parts by weight of photo-initiator, the number of unsaturated groups and third groups per molecule being greater than 4. The material may be image-wise exposed to ultraviolet to cure the exposed areas and the unexposed areas removed to produce a printing plate. The photocurable compositions are preferably those of Specifications 1251232 and 1215591. Specified porous supports are fibrous papers, cloth, felt and fibrous polymers such as nylon cellulose, cellulose acetate or nitrate, polybutadiene, polyisoprene, polyethylene, polystyrene, polymethylmethacrylate, hexamethylene adipate copolymers and ethyl cellulose. The composition may contain filters or curing inhibitors and may be covered with a protective layer.
Patent GB-1295796-A (GB)
IPC: C01F5/30
Filed: 1971-04-19
Abstract: 1295796 Purifying magnesium chloride solutions NORSK HYDRO AS 19 April 1971 [16 April 1970] 27252/71 Heading C1A A process for purifying MgCl 2  solutions comprises (a) adding to an MgCl 2  solution at pH 4-8 Ca<SP>+</SP> + ions and S= ions to precipitate sulphates and heavy metals; (b) oxidizing the solution to convert S = to SO 4 = and Br= to Br 2  and stripping off gaseous Br 2 ; and (c) adding Ba<SP>+</SP> <SP>+</SP> ions and separating precipitated SO 4 =. In step (a) Ca ions may be added as CaCl 2  solution and S<SP>=</SP> ions as Na 2 S solution. In order to compensate for H 2 S evolved, further sulphide, or H 2 S, may be added throughout the precipitation which is desirably carried out at 50-80‹C. This step may be carried out continuously in a series of 3 vessels of equal volume, the CaCl 2  and part of the Na 2 S being added to the first vessel together with the MgCl 2  solution, further Na 2 S being added to the second and, possibly, the third vessels. In step (b) the oxidizing agent may be chlorine diluted to 0À2% in air. The rate of addition may be 500-700 litres of Cl 2 -containing air per litre of solution. The process may be carried out continuously in a plate column. In step (c) Ba<SP>+</SP> + ions may be added as BaCl 2  solution. This step may be carried out continuously in an apparatus similar to that used in step (a), the MgCl 2  and BaCl 2  solutions being added to the first vessel, desirably at points of the vessel remote from one another.
Patent GB-1301698-A (GB)
IPC: H02K33/02
Filed: 1970-03-03
Abstract: 1301698 Electro-retroactive control of physical variables H CHIBA and A TOYODA 3 March 1970 10025/70 Heading G3R [Also in Division F1] The discharge pressure and flow-rate from a solenoid operated reciprocating pump A, Fig.3- detailed Fig. 8 (not shown) - See heading F1A, and its stroke are directly proportional to the solenoid current. A physical parameter (such as temperature, flow-rate, pressure, fluid concentration) which is a function of the pump output is sensed and is arranged to control the conductivity of a transistor and hence the solenoid current, whereby the physical parameter is maintained at a predetermined value. In an embodiment, Fig.3, wherein the temperature of a room is controlled, the pump supplies fuel oil to a furnace and an NTC thermistor TH senses the room temperature. Alternatively refrigerent may be pumped in the case of a room cooler. The thermistor is connected in a bridge circuit which is balanced at the desired temperature. Deviation of the resistence of T H  as the room temperature deviates, unbalances the bridge and the unbalance voltage thereof controls the transistor Tr and the half wave rectified current through the solenoid. The current is derived from a constant voltage A.C. source D via a linear transformer T and rectifier F. In an embodiment, Fig.5 (not shown), there is a similar circuit whereby the solenoid current is controlled in dependence upon pressure sensed by a transducer including a magnetic core moveable within a coil connected in an A.C. bridge. In an embodiment Fig.6 (not shown), the solenoid is controlled in dependence upon flow-rate of a liquid, the flow-rate being sensed by a heated thermistor influenced by the flow-rate, temperature compensation being provided by a similar thermistor immersed in the liquid but screened so as to be not influenced by the flow-rate. In an embodiment, Fig.7 (not shown) the coil current is controlled in dependence upon the deviation from a desired value of the actual concentration of an electrolyte in a solution. The concentration is sensed by a pair of transformers with ring cores linked by a liquid coil functioning as a short-circuit turn and containing the liquid solution to be controlled. One transformer effects excitation and the other acts as a detector. The rectified output of the detector transformer is a function of the deviation of the concentration from the desired concentration and controls a pair of transistors. The transistors in turn control the solenoid current.
Patent GB-1321639-A (GB)
Title: Pneumatic valves
IPC: F16K11/16
Filed: 1970-11-27
Abstract: 1321639 Pneumatic motor control circuit DAVIS PNEUMATIC SYSTEMS Ltd 28 Feb 1972 [27 Nov 1970] 56607/70 Heading F1P [Also in Divisions F2 and G3] In a control circuit for two pneumatic motors A, B actuation of manual valve 45 shifts pilot 46 so that motor A travels rightwards until it operates a trip valve which reverses pilot 46, causing motor A to return and engage a valve V which transmits a pulse to pilot 47. Motor B now travels rightwards and returns when trip valve 48 reverses pilot 47. Valve V, Fig. 5, may comprise two spools 7, 8 of which the latter, when in the biased position shown, vents outlet 5 via 6A and connects a duct 43 supplied from inlet 15 with a duct 44 so that pressure in cylinder 41 depresses spool 7 to connect inlet 15 to duct 17. When spool 8 is depressed by ram A, it connects duct 17 to outlet 5, (and valve 47) and when the back-pressure at the outlet unseats valve 34 in duct 33 it raises spool 7 which then disconnects the inlet 15 from duct 17 and connects the latter instead to exhaust 21, 6. In its depressed position, the spool 8 also serves to vent cylinder 41 via 44, 6A. In a modification, spool 7 is manually re-set. For further details of valve V see Division F2.
Patent GB-1324227-A (GB)
Title: Process for separation of terephthalonitrile
IPC: C07C255/51
Filed: 1972-04-04
Abstract: 1324227 Terephthalonitrile SUN OIL CO 4 April 1972 53111/71 Heading C2C Terephthalonitrile prepared by the vapour phase ammoxidation of p-xylene is separated from the resulting mixture of terephthalonitrile, toluonitrile and xylene by (1) adding the mixture to hot xylene, withdrawing a portion of the hot xylene mixture, cooling the withdrawn portion to crystallize terephthalonitrile, filtering off the terephthalonitrile and returning the filtrate to the hot xylene mixture; and (2) removing and condensating vapours from the hot xylene mixture, chilling the condensate, filtering off the terephthalonitrile, and combining it with the terephthalonitrile obtained in step (1). The terephthalonitrile may be further purified by multiple extractions with p-xylene at decreasing temperatures.
Patent GB-1334518-A (GB)
Title: Actuating systems of thrust reversal buckets for a gas turbine  engine
IPC: F02K1/76
Filed: 1971-01-14
Abstract: 1334518 Valves ROTAX Ltd 14 Jan 1971 [10 Feb 1970] 6243/70 Heading F2V [Also in Division B7] A valve 14 of a control system, Fig. 1 (not shown, see Division B7), of the thrust reversing buckets of a gas turbine engine, controls the supply of pressure fluid from an inlet 56 to outlets 50, 51 formed in the casing of a motor 12 for operating the buckets, by means of an element 54 rotating in a stationary valve casing 52. The element is formed with a conduit 55 which is always connected to the inlet and which may be connected to either outlet 50, 51 or be blocked by the casing of the motor 12. The element 54 and valve casing 52 define a torroidal chamber 58 divided into two sections by diametrically opposed baffles extending from the valve casing. Two diametrically opposed vanes extending into the chamber 58 from the element 54 define pistons moving in the two sections which define cylinders of servomotors to control the valve.
Patent GB-1336709-A (GB)
Title: Power transzmission mechanism
IPC: F16H61/02
Filed: 1970-11-05
Abstract: 1336709 Variable speed gears AUTOMOTIVE PRODUCTS CO Ltd 5 Nov 1970 [5 Nov 1969] 54177/69 Heading F2D A transmission (e.g. driven by a motor vehicle engine via a fluid torque converter 10 and driving road wheels of the vehicle) comprises planetary gearing with a carrier 13, 14 mounting clusters of two bevel planet pinions 16, 17 meshing with four bevel sun gears 18, 19, 28, 29 of which two 18, 19 are selectively connectible by two friction clutches 11, 12 to an input shaft, the output shaft 42 being selectively connectible by a dog clutch device 37 ... 39 to the third bevel gear 28 and the carrier 13, 14, for forward and reverse, the fourth bevel gear 29 being holdable by a brake 35 (as may the input shaft, the gear 28 and the shaft 42 by brakes 45, 34 and 44 the latter being positive). The brakes 34 and 35 and the clutches 11 and 12 may be fluid pressure applied under the control of a valve 48 with two spools controlled, one manually at 51, the other by a centrifugal governor 52. The brake 45 may be applied by a valve 49 only when the lever 51 is in "neutral". The lever 51 shown selectively moves three rods 54, 55, 56 axial. From the neutral position the lever 51 may either move the rod 56 alone to engage the sprag brake 44, at lever 82 and release the brake 45 via a lost motion link 78, 83 and the valve 49, or move both rods 55 and 54 a limited distance, rod 55 moving the dog clutch mechanism 37 ... 39 to one of its engaged positions, and rod 54 controlling the valve 48 via a linkage 62 ... 65 and via a resilient connection 69, the valve 49. In one direction, further movement of the lever 51 selects the transmission ratio manually. The fluid pressure available to operate the clutches and brakes may be limited in valve 49 by a cam and link 102 connection with the throttle control at small throttle settings.
Patent GB-1337915-A (GB)
Title: Wiring dressing tool
IPC: H01R43/033
Filed: 1972-06-15
Abstract: 1337915 Wrapping terminals STANDARD TELEPHONES & CABLES Ltd 15 June 1972 28059/72 Addition to 1237519 Heading B3E A wire dressing tool as claimed in Specification 1,237,519 is characterized by mounting the metal collar 1 so as to be rotatable about the stationary shank 13 of the wire-wrapping gun 10 and to be lockable in either or any one of two or more predetermined circumferential positions around the shank under the influence of a spring 16. In the embodiment shown two keys 7, 8 are provided in the collar 1 at 180 degrees separation, the keys co-operating with two slots in the body of the gun 10 and being held thereon by means of the spring 16. To change the setting of the guide rod 4, the collar 1 is slid along the shank against the spring action to disengage the keys from their respective slots. The collar is then rotated about the shank to the required position and held therein by the keys under the action of the spring.
Patent GB-1339702-A (GB)
Title: Programmed learning apparatus
IPC: G09B5/06
Filed: 1971-03-19
Abstract: 1339702 Audio-visual apparatus R T EVANS & SONS and J DEVLIN 17 March 1972 [19 March 1971] 7368/71 Heading G5R A housing 10 containing a cassette tape recorder and a slide projector, together with a pulse unit for synchronizing their operation, has in its upper surface an opening for the reception of a slide magazine 15 for the projector and in its front surface a viewing screen 18 (which may be removable) and an opening 12 to receive a tape cassette. Insertion of a magazine 15 closes a microswitch (22), Fig. 3 (not shown), to light a lamp 23, and other lamps 24, 26 respectively indicate when the tape is fully rewound or stopped in response to a recorded stop pulse. A remote control unit may be plugged into a socket 27, to initiate automatic operation of the apparatus and to provide slide-change and tapestop pulses for recording, or into a socket 30 to effect unsynchronized control of the projector.