baber/WOPTO huggingface dataset:
Patent GB-1191639-A (GB)
Title: Electrical Control Circuits
Inventor: SMITH BRIAN TURTON
IPC: H02P7/29
Filed: 1966-10-07
Abstract: 1,191,639. Automatic current control. WESTINGHOUSE BRAKE & SIGNALCO. Ltd. Sept.28, 1967 [Oct. 7, 1966], No. 44881/66. Heading G3R. In a control circuit for varying the mark/space ratio of current applied to a load, a signal indicative of the value of a dependent variable is applied to an integrator which operates, on the attainment of a given integrated signalvalue, to modify the operation of the circuit to tend to keep the load current at a desired mean value. As shown for use in the control of an electrically driven vehicle, the motor 2 is supplied from a battery 3 by way of a variable markto-space ratio regulator 1 which employs a semiconductor controllable rectifier. ON pulses for the regulator 1 are derived from a pulse generator 5 on the command of a foot pedal and control unit 7 which also sets up, by way of an associated circuit 8, a reference signal dependent upon the position of the foot pedal. This reference signal is applied as one input to a comparator 10 which also receives an input from an integrator 9 connected to integrate a signal derived from a device 4 sensing the motor current. An output from the comparator is applied as an input to an OFF pulse generator 6 and also to a reset unit 11 for the integrator 9. Thus, when the regulator 1 is switched ON by pulses from the generator 5, current in the motor rises and the integrator 9 applies an integrated signal to the comparator 10; when the value of this integrated signal attains a predetermined relationship with the reference signal from circuit 8 the comparator 10 produces an output signal which causes generator 6 to produce an OFF pulse for the regulator 1 and also to reset the integrator 9. In the event of the integrated output not reaching the predetermined value within a predetermined time of a reset, a further reset pulse is produced so that it is not necessary under these conditions to apply an OFF pulse to the regulator. The circuit may be used to control a naturally commutated A. C. system, Fig. 2 (not shown), and also, a forced-commutation A. C. arrangement in which the ON pulses are synchronized with the supply frequency at some desired or controlled firing angle
Patent GB-1357166-A (GB)
Title: Derivatives of methoxyheteroyohimbine with sympatholytical proper ties and preparation methods for producing same
IPC: C07D491/22
Filed: 1971-09-27
Abstract: 1357166 Methoxyheteroyohirubine derivatives FORSCHAG FORSCHUNGS-UND CHEMIE AG 27 Sept 1971 [30 Sept 1970 17 Sept 1971] 44976/71 Heading C2C Novel compounds I in which R is hydrogen, methyl or (in which R 1  is independently alkyl or N(R 1 ) 2  forms a 5 or 6-membered heterocycle) and the salts thereof are prepared by alkaline extraction of compound I in which R is CH 3  from a plant of species Cabucala cryptophlebia, C. plectarilifolia or C. crassifolia. The alkaline extraction is separated by chromatography by successive elutions with benzene, dichloromethane and dichloromethane with successive additions of 1, 2, and 5 per cent methanol. Compound I in which R is H is prepared by hydrolysis of the above ester and isolating the acid by precipitation at the isoelectric point. The above acid is reacted with an aminoethane halide in an organic solvent in the presence of an acid acceptor insoluble in the reaction medium, the aicd being either in the form of a zwitterion or as an alkali metal salt in which case the reaction is carried out in the additional presence of potassium acetate with the aminoethane halide being in hydrohalide salt form. Compounds I have sympathological properties and form with an excipient a pharmaceutical composition which may be administered orally, parenterally or rectally.
Patent GB-1314750-A (GB)
Title: Dual circuit brake valve
IPC: B60T15/04
Filed: 1971-09-28
Abstract: 1314750 Dual circuit brake valves BENDIXWESTINGHOUSE AUTOMOTIVE AIR BRAKE CO 28 Sept 1971 [29 Sept 1970] 45142/71 Heading F2F In a dual circuit brake valve comprising a housing 10 having two sets of inlet and delivery ports 11, 12; 13, 14, a manually operated valve member 52 communicates one of the inlets simultaneously with two relay elements 38, 46 which respectively control the fluid flow in the sets of inlet and delivery ports through respective valves. Force from a pedal is transmitted through a disc 68, a rubber bush 72 to a piston 62 having an extension 74 which operates the valve member 52 to allow fluid to pass from inlet 11 to chamber 54 and, via a passage 60, to chamber 58, thus operating relay elements 38, 46 which have equal pressure areas. Movement of the elements 38, 46 act on valves 22, 24 to allow fluid to pass from the inlets 11, 12 to the respective outlets 13, 14. The fluid pressure builds up beneath the piston 62 and causes deformation of the bush 72 until equilibrium is reached. Upon pedal retraction, the piston 62 and extension 74 move upwardly allowing the fluid from the delivery ports to exhaust to atmosphere through passages 82, 84. Upon failure of the fluid supply to inlet 12, the operation of the relay is unaffected, and upon failure of the supply to inlet 11, a shoulder 86 on the extension 74 affords direct mechanical operation of the relay element 46.
Patent GB-1254007-A (GB)
Title: Production of polyamides from aromatic diamines
Inventor: JONES MICHAEL EDWARD BENET
IPC: C08G69/28
Filed: 1969-06-23
Abstract: 1,254,007. Polyamides. IMPERIAL CHEMICAL INDUSTRIES Ltd. 23 Sept., 1970 [23 June, 1969], No. 45291/70. Divided out of 1,254,003. Heading C3R . Polyamides are obtained by condensing at 160‹ to 300‹ C. a bis(aminophenyl) and a dicarboxylic acid using as catalyst the product formed by adding to the reaction mixture at below 150‹ C. a salt of hypophosphorous acid and an organic base of pK a  less than 3-0 other than an aminophenyl sulphone. Other features of the invention are the same as in Specification 1,254,003 which relates to the use of salts of the excepted base. Specified organic bases are 2- or 4-acetyl aniline, 4-(p-aminobenzoyl) aniline, 4 - benzoylaniline, 3 - methylsulphonyl aniline, 2 - bromo-, -chloro-, -iodo-, -cyano- or -nitroaniline, and 4-cyano-, or -nitro-aniline. Reference is made to Specifications 1,113,824 and 1,161,124.
Patent GB-1023868-A (GB)
Title: Improvements in or relating to superconductive devices
IPC: H01L39/18
Filed: 1963-11-18
Abstract: 1,023,868. Super-conductor devices. INTERNATIONAL BUSINESS MACHINES CORPORATION. Nov. 18, 1963 [Nov. 29, 1962], No. 45360/63. Heading H1K. A super-conductive gating device has two parallel shield conductors each having at least its inner face formed of super-conductive material having aligned between them and parallel thereto a control conductor of hard super-conductive material and at least one gate conductor positioned adjacent one of the shield conductors and having at least one portion of its length formed from soft super-conductive material. Figs. 1, 1aillustrate a typical case, having control conductor 14 spaced a distance T from one shield conductor and a gate conductor containing a soft super-conductive portion 12A at distance S from the other shield conductor. Fig. 1billustrates a curve 21 of gate current against control current, the super-conducting and resistive state being below and above the curve. It can be seen that provided the slope of the curve at the point Ice is greater than 45, an operating point a can be chosen such that the state of the super-conductor can be taken around the square abcdand that a current gain can be obtained, i.e. that the change I 1 in gate current can be greater than the change I 3  in control current. The Specification states that such a condition is possible if T>S. The standing current I c may always be present in the control conductor or in a separate biasing conductor, Fig. 2 (not shown). In a modification, Fig. 3, the gate conductor has two portions 12, 26 symmetrically placed about the control conductor 14. This arrangement avoids mutual inductance between gate and control conductors thereby improving the response time. Current gains is again possible if T > S. In a further arrangement, Fig. 4, the gate conductors are closer to the control conductor than to the shields. This arrangement is said to have a characteristic similar to Fig. 1b,but with the maximum on the other side of the Ig axis so that the device may be operated with current gain with the currents in control conductor 14A and gate conductor 12A flowing in the same direction. By then moving the return gate conductor, Fig. 5, further from the control conductor regenerative coupling between gate and control conductors may be achieved. In all the drawings T must be greater than S for current gain. The hard super-conductor may be lead and the soft super-conductor tin or indium.
Patent GB-1102440-A (GB)
Title: Expansion joint
IPC: E01D19/06
Filed: 1966-10-11
Abstract: 1,102,440. Expansion joints. GENERAL TIRE & RUBBER CO. 11, Oct., 1966 [1, Nov., 1965], No. 45403/66. Heading E1G. A road or bridge type expansion joint comprises an elastomeric body 19 having flat parallel top 109 and bottom 111 areas formed with pluralities of cavities 123, 125 separated by webs 127, such cavities being staggered in the direction of movement of the joint and of reduced depth in. the vicinity of reinforcing means 113 bridging the gap 17. The cavities are preferably elliptical with their major axes along the length of the joint, the webs 127 sloping in the direction of the minor axes for reduced rigidity. Adjacent sections of the joint are joined by a half-dovetail formed in the elastomer and secured by adhesive.
Patent GB-1269449-A (GB)
Title: Improvements in or relating to the treatment of textiles
IPC: C11D3/42
Filed: 1970-09-25
Abstract: 1,269,449. Treating of textiles with optical brighteners. HENKEL & CIE G.m.b.H. 25 Sept., 1970 [29 Sept., 1969; 11 Dec., 1969 (2)], No. 45685/70. Heading DIP.  A textile treatment composition having a content, as optical brightener of (a) an alkali metal or ammonium salt of 4, 4'-bis (2 anilino- 4-methylamino-1, 3, 5-triazinyl-6-amino)-stilbene 2, 2'-disulphonic acid and (b) an alkali metal or ammonium salt of 4, 4'-bis-(2-anilino-4-morpholino-1, 3, 5- triazinyl-6-amino)-stilbene-2, 2'-disulphonic acid the molar ratio of the compound (a) to the compound (b) being from 3:1 to 1:4, preferably from 2:1 to 1:2. Preferably the salt of components (a) and (b) is the sodium salt. The composition suitably contains 0.01 to 1 % by weight based on the solids of the optical brightener and 99 to 99.99% by weight of further substances suitable for the treatment namely. (a) from 1 to 40% by weight of at least one compound from the class of anionic, non-ionic and amphoteric surface-active detergent substances, (b) from 10 to 80% of at least one non-surface-active builder salt with a cleaning intensifying or complexing action, (c) 10 to 50% of a per-compound, especially sodium perborate, either anhydrous or containing water of crystallisation and also its mixtures with stabilisers and activators and (d) 0.1 to 20% of other auxiliary and added substances. The detergent substances may consist of. up to 100%, preferably 5 to 70% of compounds of the sulphonate and/or sulphate type, up to 100%, preferably 5 to 40%, of non-ionic compounds of the poly glycol ether type and up to 100%, preferably 10 to 50% of soap. The builder salts may be composed of up to 100%, preferably 25 to 95%, of alkali metal triphosphates and their mixtures with alkali metal pyrophosphates, up to 100%, preferably 5 to 50%, of an alkali metal salt of a complex-forming compound from the class of poly phosphoric acids, nitrilotriacetic acid and ethylenediamino tetraacetic acid and up to 100%, preferably 5 to 75% of at least one compound from the class of alkali metal silicates, carbonates and borates. Among the other auxiliary and added substances are especially the foam inhibitors, enzymes and greying inhibitors, all of which can be present in quantity up to 5% and preferably from 0.2 to 3%. The composition may also contain in the form of an aqueous dispersion 3 to 15%, preferably 5 to 10% of surfaceactive ammonium compound, from 0.1 to 1% of a dispersion stabiliser from the class of fatty acid alkylolamides, polyethylene glycols and polyethylene glycol derivatives of alcohols amine fatty acid and alkyl phenol, from 0 to 2% of a neutral salt and from 0 to 10%, preferably 0.5 to 5% of an organic solvent, such as low molecular weight alcohols, especially ethanol and isopropanol, etheralcohols, glycols, ketones, urea and alkylolureas may be used. The composition may also contain a water insoluble or water dispersible polymer having a stiffening or dressing action.
Patent GB-1090530-A (GB)
Title: Improvements in pedal operable door opening devices for cabinets
IPC: E05B17/00
Filed: 1966-10-13
Abstract: 1,090,530. Pedal-operable door-opening devices for cabinets; latch fastenings. COMPAGNIE FRANCAISE THOMPSON HOUSTON - HOTOHKISS BRANDT. Oct. 13, 1966 [Oct. 14, 1965], No. 45748/66. Headings E2A and E2M. A pedal-operable door-opening device for a refrigerator or other cabinet comprises a single piece of plastics material, preferably of the polypropylene type, having a fixed part 8 which is attached to bracket 3 on door frame 1 by screws 4 and tongues 6 on the bracket engaging with grooves 9 on the inside of fixed part 8, a pedal part 12 connected to fixed part 8 by waisted portion 15, and a lug part 13 adapted to open the door or a projection thereon when the pedal is depressed. A spring (17, Figs. 3 and 4, not shown) is provided underneath parts 7 and 8 to restore the pedal when the foot is lifted off it. Fixed part 8 includes a latching surface 10 see Fig. 2, which latches under a catching surface 11 of bracket 3 in such a manner that fixed part 8 is not displaced when the pedal is operated. The lug may either be adapted to operate on a boss 24 carried on the door, or on the door itself, or on a boss on a vertical edge of the door (Fig. 5, not shown). The pedal 12 may be protected against wear by a metal cap or insert 14 or by a rectangle of hard-wearing adhesive material stuck on the pedal.
Patent GB-1096985-A (GB)
Title: Method of forming spinning openings in spinnerets and spinning plates
IPC: B21D31/02
Filed: 1966-10-14
Abstract: In forming spinning openings in spinnerets or spinning plates, an electric current is passed between the spinneret or spinning plate (2) and a suitably formed electrode (3) through a gap (8, 9) filled with electrolyte, preferably fed under pressure to the gap e.g. through a drilled electrode (bore 6) or the spinning capillary (15). Thus inlet bores (10) may be formed electrolytically (Fig.1) in iron spinnerets using a copper tube electrode (3) surrounded by a P.V.C. sleeve (5), and burrs (17) formed between the inlet bores (10) and spinning capillaries (15) during machining may be removed electrolytically (Fig.5) using a copper rod electrode (19) insulated by a sleeve (18).
Patent GB-1207927-A (GB)
Title: Electron beam tubes
Inventor: TREHERNE THOMAS HARVEY
IPC: H01J23/00
Filed: 1969-09-18
Abstract: 1,207,927. Velacity-modulated tubes. STANDARD TELEPHONES & CABLES Ltd. 18 Sept., 1969, No. 46048/69. Heading H1D. Radiation from a gap between two axially apposed tubular electromagnetic screening members which are D.C. isolated from one anotheras shown, the gap 14, Fig. 2, between the final drift tube 8 and the collector 1, 13 of a klystrom -is prevented by a pair of coaxial metal sleeves 16, 17 surrounding the gap and in radiationtight contact with a respective one of the screening members, and on assembly 26 of washer-like capacitor plates 18, 19, Fig. 3, separated from one another by dielectric sheet material 20, each plate being formed integrally with an inner or an outer peripheral set of upturned contact fingers 21 arranged to press against a respective one of the apposing surfaces of the pair of metal sleeves. Flanges 2 and 4 project from the klystron body, the capacitor assembly-which is clamped by screws 31 between insulating rings 23 and 29 and to sleeve 17-being attached by screws 32 to flange 2, a spring 33 ensuring good electrical contact therewith. Metal ring 22, attached by screws 34 to the flange 4, incorporates a spring 25 to make good electrical contact with sleeve 16. The klystron envelope includes a ceramic or glass portion 3 sealed to flanges 2 and 4 by expansion joints 12, the drift tube 8 being cooled by water flow through jacket 9. Reference is made to the use of the shielding arrangement in a travelling-wave tube.
Patent GB-1485372-A (GB)
Title: Electrical apparatus for the production of pulses
IPC: H03K3/72
Filed: 1974-11-27
Abstract: 1485372 Electrical muscle exercisers SLIM MASTER BEAUTY EQUIPMENT (SALES) Ltd 27 Nov 1974 [4 Oct 1973] 46514/73 Heading A5R [Also in Divisions H3 and H5] A pulse circuit more particularly for an electrical muscle exerciser comprises a pulse generator G, Fig. 1A, means for feeding the pulses to an output in controlled periods and means for varying the intervals between the periods by a generator having an output cycle comprising at least four states. The pulse generator G comprises a unijunction transistor oscillator, an amplifying transistor T6 and a NAND gate GL4 arranged as an inverter. Pulse frequency is controllable by VR1. The output of GL4 provides an input to a NAND gate GL3b and also acts as a clock input to a flip-flop SL2a arranged to produce at outputs Q, Q two square waves in anti-phase with 1:1 mark/space ratio, provided that switch S1 is open. The Q, Q outputs are applied to NAND gates GL3a, GL3b respectively, arranged to provide an output in the presence of a logic 1 signal from a monostable circuit MONO 1 (ML1) cross coupled with a second monostable circuit MONO 2 (ML 5) to provide a second oscillator, Fig. 1c. The pulse outputs pass alternately via transistors T1, T10 or T2, T11 to the primaries of ten parallel-connected transformers, Fig. 1B, the secondaries of which are connected to muscle treatment contact pads via pulse amplitude controls Pt2 &c. The pulses due to T10 and T11 are of. opposite polarity. If switch S1 is closed the Q output is fixed at logic O and pulses are only passed by. T11. A Miller integrator M, Fig. 1B, also' initiated from MONO 1, by a logic O signal, is arranged to turn on slowly a transistor T3, thus providing a slow increase of pulse amplitude at the start of each period, Fig. 7 (not shown). The duration of a pulse period is determined by the time constant of a capacitor C4, connected to MONO 1, Fig. 1C, in combination with resistors R7, VR2. At the end of the pulse period the complement of the output of MONO 1 triggers the other monostable circuit MONO 2. The time interval before the next pulse period is determined by C5, R8, VR3, and also R11 if a transistor T7 is off. T7 may be turned on by setting a switch S2 to the 'CONSTANT' position; if however switch S2 is set to either the 'MODE 1' or the 'MODE 2' position the moment when T7 isturned on is controlled by a pseudo-random generator RG, Fig. 1D. Thus in the latter positions of S2 the interval between pulse periods is increased by an amount determined  by the output cycle of RG. Generator RG comprises bistable units SL2b, SL6a, SL6b, with NAND gates GL7a, GL7b and GL7d forming a non-equivalence circuit which outputs to MODE 1 a zero when the outputs of SL2b and SL6b are equivalent, Fig. 6 (not shown). A NAND gate GL7c connected as an inverter provides the complementary output to switch position MODE 2. A NAND gate GL3c is used to prevent the generator from 'locking up' if the real outputs of the three bistable units are all zero.
Patent GB-1055918-A (GB)
Title: A method of polycondensing bis(2-hydroxyethyl)-terephthalate and apparatus for performing the same
Inventor: HAHN WOLF DIETHER
IPC: C08G63/78
Filed: 1965-11-03
Abstract: Bis - (2 - hydroxyethyl) - terephthalate is polycondensed by continuously passing it through at least on open trough which is indirectly heated by a fluid heating medium conducted in countercurrent to the reaction mixture, the volatile compounds evolved being removed from the reaction zone.  In the apparatus described a column contains a plurality of horizontal plates in tiers, each plate being divided by baffles into a continuous repeatedly curved trough, along which trough runs a pipe containing the heating means flowing in counter-current to the reactant, with means for transferring liquid from each plate to the next, channels for the withdrawal of volatile substances from each plate, and a means for returning condensate from the volatile substances to the uppermost plate.
Patent GB-1169990-A (GB)
Title: Phenoxy Propan-2-Olamines
Inventor: WASSON BURTON KENDALL
IPC: C07D303/24
Filed: 1967-10-13
Abstract: 1,169,990. Propanolamine derivatives. MERCK & CO. Inc. 13 Oct., 1967 [21 Oct., 1966], No. 46824/67. Heading C2C. Compounds of the general Formula VI (R 1  = OH, C 1-3  alkyl, C 1-3  alkoxy; n = 0, 1 or 2; R 2  = H, C 1-3  alkyl; R 3 , 4  = C 1-3  alkyl or -NR 3 R 4  = saturated heterocyclic ring; Z = straight chain hydrocarbon radical of up to 4 carbon atoms, branched chain hydrocarbon radical of up to 9 carbon atoms in which the branches are alkyl groups, substituted hydrocarbon radical in which the substituents are cyclic or heterocyclic groups and containing not more than 9 carbon atoms including those in the substituents, heterocyclic or carbocyclic radical of up to 9 carbon atoms) and their acid addition salts are prepared as follows optionally followed by conversion of R 1  = alkoxy to R 1  = OH and/or salt formation. These compounds are #-adrenergic blocking agents, and may be administered in the form of pharmaceutical preparations containing them together with a carrier.
Patent GB-1493944-A (GB)
Title: Laminar recording medium comprising a ferromagnetic composition
IPC: G11B5/74
Filed: 1974-10-30
Abstract: 1493944 Laminates GRAHAM MAGNETICS Inc 30 Oct 1974 [31 Oct 1973] 47014/74 Heading B5N [Also in Divisions B6 and C3] A credit card carries, on its surface, strips of release paper which in turn carry a ferromagnetic composition (C) comprising #2 different populations of ferromagnetic material mixed together within a single matrix, each population (P) being independently capable of storing magnetically recorded information, a non-integrated dM/dt curve of composition (C) exhibiting 2 peaks separated by a valley, as in Fig. 4. One of the populations is magnetically switched at a magnetic field intensity at which a second population is not switched. The ferromagnetic materials may be powders selected from Co-containing metals, e.g. of coercivity (He) 500-1100 oersted or more, γ-Fe 23 O 3  of Hc # 350, CrO 2  or He of about 400 or less, Co-doped γ-Fe 2 O 3 , and Fe 3 O 4 . Preferably the coercivity differences between populations are 200-1000 or more. Preferably the populations should have substantial differences in density and/or Bm values (magnetic moments); e.g. the metal powders may have s.g. 8À5 and Bm 8000-20,000 gauss and the oxide powders s.g. 4À4 and Bm 3000-4000 gauss. A trimodal mixture may comprise, e.g. Fe/Mn/Ni/Co alloy, Fe oxide, and Co alloy of respective coercivities 125, 330, and 1010. The release-paper, strips are fastened adhesively or by heat to credit-card stock. The binder for the magnetic powder may be polyurethane containing lecithin.
Patent GB-1585238-A (GB)
Title: Method of cleaning poultry feathers
IPC: D06L1/04
Filed: 1977-11-11
Abstract: To improve cleaning processes for poultry feathers, the wash liquor is admixed with one or more deodorising and/or disinfecting agents. However, the agents used leave the springiness of the fibres unimpaired. It is particularly useful to add from 0.001 to 0.05% by weight of a 40% strength by weight of an aqueous solution of methanal (formalin) or from 0.01 to 0.05% by weight of 2,4,4'-trichloro-2'-hydroxydiphenyl ether.