baber/WOPTO huggingface dataset:
Patent GB-1047269-A (GB)
IPC: H04N3/185
Abstract: 1,047,269. Sawtooth circuits; cathode-ray tube operating circuits. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Aug. 7, 1964 [Aug. 12, 1963], No. 32205/64. Headings H3P and H4T. In a television receiver, the raster width and height are allowed to increase proportionally during long term increases in the load on the e.h.t. supply, but the line output stage is stabilized in such a way that the raster width remains independent of the e.h.t. voltage during any one field scan. This avoids the production of a wedge-shaped raster due to variation in brightness during one field period. In the line output stage shown in Fig. 3, the pentode 10 and efficiency diode 8 are arranged to be conductive during the whole of each sweep, the flyback pulse induced in the tertiary winding 4 of the output transformer 1 being rectified by a voltage-dependent resistor 17 and fed back via resistor 22 to stabilize the amplitude of current in the deflection coil 12. The position of the tertiary winding 4 relative to windings 2, 3 is arranged so that the change in deflection current is one seventh of the change in e.h.t. voltage. This ensures that, when using a flat screen tube, the aspect ratio remains at 5: 4. The shunting effect of the coupling capacitor 28 and resistors 26, 27 arranges that e.h.t. variations during one field period result in a change in line deflection current of one half the change in e.h.t. voltage and thus ensures that the raster width remains constant during each field scan. The line amplitude is adjustable at 19. In Fig. 1 (not shown), capacitor 28 and resistor 27 are connected between grid and earth.
Patent GB-1047515-A (GB)
IPC: H04N3/20
Abstract: 1,047,515. Cathode-ray tube protection circuits. BRITISH BROADCASTING CORPORATION. May 7, 1964 [May 14, 1963], No. 19136/63. Heading H4T. A control voltage produced on failure of either the line of field deflection waveform sources of a cathode-ray tube is utilized to render the beam innocuous to the tube screen. The control may be effected by the application of a suppression bias to a suitable electrode of the tube together with, if desired, a " followup " protection effected by controlling the EHT voltage and the beam focus current. Alternatively, protection made be effected by deflecting the beam off the screen. In the described embodiment the control voltage which is utilized as a beam suppression bias on the control grid 23 (Fig. 1) is developed as a negatively-going pulse (Fig. 2, not shown) at point 24 during the stable states of monostable multivibrators 19, 21 the latter being triggered to such states by pulses derived from the line and field drive pulses respectively (which occur at the commencement of the flyback periods) and then triggered to the quasistable states, during which the control voltage is absent, by pulses derived from the trailing edges of the fly-back pulses produced in the line and field deflection coils. Thus, in normal operations the beam is un-suppressed during the forward stroke of the scanning saw-tooth and during the fly-back periods the control voltage is effective to suppress the beams, i.e. to effect normal blanking. However, upon failure of either the time-base circuits or the drive pulses therefor the multivibrators revert to their stable states and effect suppression of the beam or operate in the other manners referred to above.
Patent GB-1051017-A (GB)
IPC: H04N5/60
Abstract: 1,051,017. Frequency changing circuits; multiplex radio signalling. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Oct. 28, 1964 [Oct. 31, 1963], No. 43956/64. Headings H3F and H4L. A circuit for mixing a frequency and an amplitude modulated oscillation, e.g. for producing the inter-carrier between vision and sound cameras in a television receiver, is such as to produce an output from which amplitude variations have been removed. Sound and vision intermediate frequencies are applied to a valve 1 the anode circuit of which comprises coil 2 and a resistor 4 shunted by a capacitor 3. Coil 2 is coupled to a coil 5 feeding a resonant circuit 6 which is coupled by coil 7 to the video demodulator diode 8. The mixture of the two I.F. oscillations is derived from the anode of valve 1 through coupling capacitor 13 and is applied to the grid of a triode 14, which is connected to the cathode via inductor 17 and resistor 18, so that there is normally no standing bias on the grid. The cathode may be earthed or connected through a voltage divider 15, 16 to the supply source: the cathode circuit may also include e.g. a non-linear resistor for stabilizing the cathode current. The anode circuit comprises inductor 19 tuned to the difference frequency by series-connected capacitors 20, 21 and is back-coupled to the grid circuit over capacitor 23: an output at difference frequency is obtained from tuned circuit 25 which is coupled to inductor 19. In this arrangement the mixing valve 14 is gridcurrent biased so that on the stronger parts of the signal applied to the grid the valve is biased to work at a point where its conversion conductance is lower, thereby reducing the degree of amplitude modulation. In addition, on account of the feedback over capacitor 23, the valve provides variable damping on the tuned circuit 19, 20, 21, the damping being greater when the signal amplitude is high and so further reducing the degree of amplitude modulation.
Patent GB-1051256-A (GB)
IPC: G01L1/16
Abstract: 1,051,256. Piezo-electric elements. H. LIST. Aug. 27, 1963 [Aug. 30, 1962]. No. 33834/63. Heading H1E. A piezo-electric element, for, e.g., a force measuring instrument, comprises a stack of electroded piezo-electric (e.g. quartz) crystals 1 having electrodes of like polarity connected together by conductive bridges 7 on the edges of the crystals. Each crystal preferably carries two such bridges joined each to one of the electrodes 6 and having an extremity 8 extending on to the opposite side of the crystal but insulated from the electrode on the opposite side. The crystals are so orientated that the conductive areas 8 of adjacent crystals coincide and a continuous electrical path to the conductive plate 2 is provided for one set of alternate electrodes and another path to the plate 4 is provided for the other set. A further crystal 1<SP>1</SP> is arranged beneath the plate 4 and pressure is applied to the plate by means of a rod 5. Alignment of the crystals is facilitated by notches which together provide a recess for an insulated rod (not shown) forming part of the assembly. The recesses may coincide with the bridgepieces 7. In order to prevent peeling of the deposited metal near the edges of the crystal, the latter may be rounded in the vicinity of the bridge pieces. To obtain a symmetrical transverse response from the stack, the Y axes of the crystals are arranged in a symmetrical fashion, e.g. where six crystals (as shown) are used, the Y axes are arranged at 120 degrees to one another. The crystals are X-cuts, as shown.
Patent GB-1053236-A (GB)
IPC: H05B41/392
Abstract: 1,053,236. Discharge lamp circuits. GENERAL ELECTRIC CO. July 23, 1963, No. 29090/63. Heading H2H. [Also in Divisions G1 and G3] The light output of a discharge lamp may be varied or kept constant by a known switching system 10 in series or in parallel with the lamp, the former to give a voltage reduction and the latter a voltage increase. Both systems may be employed with the switches opening alternately and in synchronism. The lamp may be controlled by elements sensing lamp current voltage, power, light output, temperature, hotspot temperature, ambient temperature, or outdoor illumination. The transistors in the switching system may be replaced by thyristors. The lamp may be fed by chopped A.C. or D.C. The switching frequency may be between 300 and 30,000 c.p.s.
Patent GB-1084165-A (GB)
IPC: C07J5/00
Abstract: 1,084,165. 4,5-Seco-steroids. ROUSSELUCLAF. March 24, 1965 [March 25, 1964], No. 58324/66. Divided out of 1,084,164. Heading C2C.  Novel 18,19 - bis - nor - 4,5 - seco - pregnanes having the formulµ wherein R is an alkyl group having 2-18 carbon atoms, are obtained in a process which comprises reacting a 5-enamino-13#-alkyl-18,19- bis - nor - des - A - pregna - 5(10),9(11) - dien- 20-one with a 1-halo-3-chloro-2-butene to form the corresponding 3-chloro-13#-alkyl-18,19-bisnor - 4,5 - seco - pregna - 2,9 - diene - 5,20- dione, reacting the latter with an acid hydrolysing agent to form the corresponding 13#- alkyl 18,19 - bis - nor - 4,5 - seco - pregn - 9 - ene - 3,5,20 - trione, and reacting the latter catalytically with hydrogen so as to form the corresponding 13# - alkyl - 18,19 - bis - nor - 4,5 - seco - pregnan - 3,5,20 - trione.
Patent GB-1227225-A (GB)
IPC: A21C1/14
Filed: 1968-08-23
Abstract: 1,227,225. Kneading tool. KENWOOD MFG. (WOKING) Ltd. 23 Aug., 1968 [22 Nov., 1967], No. 40420/68. Heading B1C. A kneading tool comprises a kneading portion 1 having a drive shaft 2 releasably attachable to a mixing machine and a guard 3 rotatable with respect to the kneading portion while the latter is rotated. The guard is rotatably mounted on the kneading portion and is provided with a lug 4 which engages a stop 10 to prevent rotation of the guard with the kneading portion about the axis of the latter. The kneading portion may be arranged simultaneously to rotate about its own axis and to carry out an orbital motion about a vertical axis passing through the lug. The guard may be frusto-conical in shape.
Patent GB-1228927-A (GB)
IPC: E05B17/18
Filed: 1968-11-07
Abstract: 1,228,927. Cylinder lock mechanisms. M. SIEVERS [trading as CARL SIEVERS]. 7 Nov., 1968 [11 Nov., 1967], No. 52767/68. Heading E2A. A lock mechanism has a barrel 2 with a key slot 3 and a seal 12 for the key slot, the seal comprising two portions G each having a lip 10 and having been fitted to the barrel so as to be flexibly deformed the lips converging inwardly of the key slot in the key insertion direction to define a fissure 11 and being in sealing engagement with one another when the key slot is vacant, by virtue of being resiliently stressed against one another as a result of the flexible deformation of said portions. In the construction shown at each end, each lip has a shoulder 13 and the shoulders 13 of the two portions 9 have surfaces 14 which are pressed against each other when the two seal portions are forced into position in a recess 8 of the barrel; the seal is retained in position by a cap 7 the cap having a key aperture 6.
Patent GB-1230602-A (GB)
IPC: G03C1/61
Filed: 1968-07-29
Abstract: 1,230,602. Heat-developable diazotype materials. RICOH K. K. July 29, 1968, [July 31, 1967], No.36083/68. Heading G2C. A heat-developable diazotype material which comprises a support, a layer containing a diazonium compound and an azo coupler, and a layer containing fine particles of a salt of a trichologenated acetic acid and a nitrogen-containing base dispersed in a thermoplastic binder. Specified nitrogen-containing bases are alkylamines, alkanolamines, analkylamines, cycloalkylamines, hydroxyalkylamines, guanidines, morpholine, piperidine and picoline and ammonium ion.
Patent GB-1230843-A (GB)
IPC: F16B2/24
Filed: 1968-08-28
Abstract: 1,230,843. Step-by-step jacks. E. BILBERG. 28 Aug., 1968, No. 41140/68. Heading B8J. [Also in Divisions E1-E2] A support structure comprises an outer tubular support member 1 attached to legs (not shown) an inner tubular or rod like support member 3 movably mounted in the outer tubular support member and a washer shaped clamping member 8 having a hole 9 to receive the inner support member and abutting one edge 7 of a recess 6 formed in a member 5 attached to the outer tubular member, a spring 14 being provided to bear upon the clamping member at a position substantially diametrically opposite to the recess so as to cause the clamping member to take up a position at an oblique angle to the longitudinal axis of the inner support member thus clamping the inner support member and preventing it moving downward in the outer support member. In the construction shown a screw 11 passes through a hole 10 in the clamping device and through a hole 13 in a projection welded to the outer tubular member, the spring being disposed around the screw between its head and the upper surface of the clamping device. The screw is provided with a nut 15 to enable the pressure of the spring against the clamping device to be adjusted. A washer shaped manually controlled member 19 is also provided for raising and lowering the inner support member although this can be omitted; the member 19 has a hole through which the inner support member passes and one edge portion engages a recess 17 in a bracket 16 welded to the outer tubular member. The member 19 has a bent-up portion with a hole to receive a handle by which the member can be moved up and down to move the inner tubular member relative to the outer tubular member. For moving the inner tubular member downwardly the clamping device 8 must first be released manually. In a modification the member 19 is secured to a member welded to the outer tubular member 1 by means of a screw, nut and spring as described above for the device 8. A construction is also described in which a washer-like member for moving the inner support member up and down is disposed above the device 8.
Patent GB-1234445-A (GB)
IPC: C14C1/06
Filed: 1968-07-23
Abstract: 1,234,445. Steam generation &c. P. EISLER. 23 July, 1968, No. 35021/68. Heading F4A. [Also in Divisions H2 and H3-H5] On demand for hot water, cold water flows into electrically-heated thermostatically controlled container 18 and displaces hot water to outlet pipe 19. The cold water may be gravity fed from a reservoir 11 to container 18 and be controlled by a valve in the inlet pipe 13, but preferably it is pumped by a self-priming pump 15 on closure of a foot switch 26. The container 18 is a seamless drawn aluminium container and is heated by a surrounding heating film 27, and controlled by an adjustable thermostat 29. A baffle 32 prevents the cold water from being delivered directly to outlet pipe 19. A control circuit is described which enables operation of the heater and pump from 110 volts A.C., 240 volts A.C. or a 24 volt D.C. supply. When using a D.C. supply, e.g. the batteries of a motor vehicle an electromagneticcut cuts off the supply should the e.m.f. fall dangerously low. The arrangement is suitable for installation in motor vehicles, market stalls, caravans &c., and may supply hot water to a sink, wash basin, shower cubicle or bidet.
Patent GB-1238054-A (GB)
IPC: G03G9/09
Filed: 1968-09-17
Abstract: 1,238,054. Dye sensitized developers. AUSTRALIA, COMMONWEALTH SECRETARY OF. Sept.17, 1968 [Sept.18, 1967], No.44210/68. Heading G2H. [Also in Division H1] Multi-colour electro-photographic images are formed by charging and exposing to a coloured image through a first colour separation filter a panchromatically sensitized or non-dye sensitized zinc oxide/binder layer and developing the latent image with a complementary coloured developer, containing a sensitizing dye for the region of the spectrum to which the next colour separation filter transmits. The final developer is not dye sensitized. When the photo-conductive layer is panchromatically sensitized the sensitizing dye is confined to the resin toner giving an imagewise dye sensitization: but when it is not sensitized the sensitizing dye is soluble in a liquid carrier and hence sensitizes the whole of the area of the photoconductive layer which is inherently blue sensitive. The resin toner may comprise a pigment and a resin e.g. vegetable oil modified penta-alkyd resins, styrene butadiene copolymer or vinyltoluene. butadiene copolymer.
Patent GB-1238217-A (GB)
IPC: H03M1/00
Filed: 1968-09-23
Abstract: 1,238,217. Control of stepping motors- NIPPON ELECTRIC CO. Ltd. 23 Sept., 1968 [22 Sept., 1967], No. 45165/68. Heading H2J. [Also in Division G3] In digital driving equipment including a stepping motor, command signals to the motor are blocked if the difference between the commanded and the actual angular position of the motor at any instant exceeds a predetermined amount. The amount is chosen so that the motor always operates in a stable condition and so cannot miss or gain a step. The equipment comprises a unit 1 which produces command feed rate signals S for a controlled member 4 from first information (e.g. from perforated tape), a "distributer" 2 (a digital curve interpolator) which produces signals S2 based on S 1 plus directional information and a driving unit 3 which comprises a ring counter and the stepping motor. A "distribution control" 6 compares the instantaneous position of the shaft of the motor with signals representing the desired position and produces a signal Sc which is logical "0" when the difference is within the prescribed limits and a "1" when it is outside. A "1" shuts a gate 5 to block signals S1. The units 1 ... 4 are not described but unit 6 may comprise an arrangement (Fig. 8, not shown) in which light is directed through a sectored shutter on the motor shaft on to a number of detectors, each of which is connected to one input of an AND gate, the other inputs of which are connected to the ring counter in unit 3. The AND gates are connected to a common OR gate which thus responds to coincidence or the lack of it between each control signal and the output of the appropriate detector. Fig. 9 (not shown) illustrates a modification of this arrangement and Fig. 10 (not shown) illustrates an alternative arrangement for producing Sc using synchros. The system so far described is effective during acceleration, but for deceleration would produce further misalignment; this may be avoided by a circuit (Fig. 14, not shown) which during deceleration only supplies control pulses at a fixed rate from an oscillator while the signal S1 is blocked. The signal Sc may also operate a lamp to enable an operator to effect initial lining-up, or this may be done automatically. In a three-axis system there is a unit 6 for each axis but their signals Sc are logically summed to control a single gate 5.
Patent GB-1238327-A (GB)
IPC: C07G11/00
Filed: 1968-08-15
Abstract: 1,238,327. Antibiotic A-21101. ELI LILLY & CO. 15 Aug., 1968 [18 Oct., 1967], No. 39040/68. Heading C2A. An antiviral antibiotic designated A-21101 and its components I, II, III and IV are produced by cultivating Arachniotus aureus NRRL 3205 in a culture medium containing assimilable sources of carbon, nitrogen and inorganic salts under submerged aerobic conditions and preferably in the presence of another antibiotic e.g. erythromycin. The broth is filtered, extracted with ethyl acetate and the solvent removed to form the crude antibiotic. The crude is dissolved in toluene/ethyl acetate (3: 1), passed through a silica gel column and eluted with the same solvent mixture to provide fractions rich in the components I, II, III and IV. Further purification is by crystallization from methanol or chromatography on alumina. The process is monitored by subjecting samples to thin layer chromatography on silica gel plates with the solvent system toluene/ethyl acetate (2: 1) the Rf values being as follows: component I 0À24; component II 0À31; component III 0À36; and component IV 0À31. The components are solid crystalline substances having the following characteristics A pharmaceutical composition having antiviral activity comprises a carrier and the antibiotic complex A-21101 or one or more of its components I, II, III and IV.
Patent GB-1238995-A (GB)
IPC: B63H11/00
Filed: 1970-01-13
Abstract: 1,238,995. Propelling ships by water jets. COMMISSARIAT A L'ENERGIE ATOMIQUE. 13 Jan., 1970 [16 Jan., 1969], No. 1628/70. Heading B7V. [Also in Division F1] A marine craft propulsion unit 10 comprises a duct 18 whose axis is parallel to the direction of movement F of the craft through the water. The duct has a variable cross-section, is open at both ends and has in succession a divergent portion which pressurizes the flow of water, an intermediate portion containing rotary circulator 20, an emulsifier 26 to inject gas into the pressurized water, a turbine 34 coupled to the circulator and a convergent portion which converts the residual pressure energy in the emulsion into kinetic energy. The propulsion unit described is in the form of a nacelle 12 which defines the duct and is attached to the craft to be propelled by profiled arm 11 which contains the supply passage of the emulsifier 26. As shown the circulator and turbine are single-stage and they are keyed on the same rotary shaft 22. Fixed bladings 24 and 36 reduce the rotational movement of the streams of water. No power need be supplied to the circulator or turbine as the craft can be brought up to sufficient initial speed by other means.
Patent GB-1250983-A (GB)
IPC: G03C1/83
Filed: 1969-07-25
Abstract: 1,250,983. Radiographic films. FUJI PHOTO FILM CO. Ltd., and TORAY INDUSTRIES Ltd. 25 July, 1969 [25 July, 1968], No. 37622/69. Heading H5R. [Also in Division C3] A support for radiography film is produced by forming a film from a mixture of polyethylene terephthalate and one or more substituted anthraquinone dyestuffs of the general formula wherein A is anilino, methylphenylamino, chlorophenylamino, dichlorophenylamino or methoxyphenylamino; and B is hydroxy or any of the groups set forth for A. The p.e.t. film preferably has a chromaticity within specified limits.
Patent GB-1251251-A (GB)
IPC: H01L21/208
Filed: 1969-03-06
Abstract: 1,251,251. Semi-conductor single crystal; lllb-Vb compounds. SONY CORP. 6 March, 1969 [8 March, 1968], No. 11891/69. Heading C1A. A single crystal of a semi-conductor compound composed of a first element of Group III B  and a second element of Group VB, the vapour pressure of the first element at the melting point of the compound being lower than the vapour pressure of the second element at the melting point of the compound, is prepared by fusing the first element in a confined zone and establishing a temperature difference of 20‹ to 300‹ C. between a lower temperature portion and a higher temperature portion thereof while keeping the fused first element below the melting point of the compound, vaporizing the second element, and exposing the higher temperature portion of the fused first element to the vapour of the second element, whereby a single crystal of the compound is formed at a lower temperature portion of the zone. Examples describe the preparation of gallium phosphide, gallium arsenide, indium phosphide and indium arsenide.
Patent GB-1252832-A (GB)
IPC: C01B21/083
Filed: 1969-08-01
Abstract: 1,252,832. N 2 F 4  and CINF 2  production. MINE SAFETY APPLIANCES CO. 1 Aug., 1969, No. 38736/69. Heading C1A. Dinitrogen tetrafluoride and chlorodifluoramine are made by reacting chlorine with difluoramine. Room temperature and below are preferred temperatures and the presence of a solvent for difluoramine, e.g. carbon tetrachloride, diethyl ether or benzene, is preferable, though optional. With starting molar ratios of Cl 2 /HNF 2  less than 2 : 1 the product is predominantly dinitrogen tetrafluoride and with starting molar ratios of Cl 2 /HNF 2  of 2 : 1 and above, the product is predominantly chlorodifluoramine.