baber/WOPTO huggingface dataset:
Patent GB-1051310-A (GB)
IPC: H02H7/12
Abstract: 1,051,310. Converting. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Oct. 7, 1964 [Oct. 10, 1963; Feb. 13, 1964], No. 40887/64. Heading H2F. [Also in Division H3] Transistor circuits producing high direct voltage for television equipment and having a driver transistor 1 coupled to an output transistor 11, which feeds on L-C load including a deflection coil 19 and S-correction capacitor (shown only in Fig. 2), and boost diodes either in series with the H.T. transformer (Fig. 2) or in parallel with it (Fig. 3, not shown) or both (Fig. 4, not shown) is protected against short-circuits on the H.T. line due either to flashover in the picture tube or a service man's screwdriver. According-to the invention a limiting impedance is connected in series with the load on the output transistor and the voltage developed across the limiting impedance on short circuit is fed to the input of the driver transistor 1 to tend to cut it off. The input transistor 1 receives signals 7 so that it conducts only briefly in each cycle. The output transistor receives signals 12 and conducts for the greater part of each cycle, and the H.T. voltage is developed when it cuts off. The output transistor is protected in two ways by the invention: the short-circuit current is limited and the speed of switching off is reduced so that the H.T. voltage is reduced. In Fig. 2 the limiting impedance is resistor 29 and capacitor 30, which do not affect the normal operation of the circuit. At short circuit the voltage drop across the resistor 29 is applied to the input of transistor 1 to block it, which tends to switch on the output transistor 11. In Fig. 3 (not shown) the limiting impedance is capacitor 34 and the signal developed at short-circuit is fed through capacitor 35 and resistor 36 to the input of transistor 1. The drive pulses may be obtained from a Hartley oscillator (Fig. 6, not shown).
Patent GB-1051458-A (GB)
IPC: H03K3/284
Abstract: 1,051,458. Pulse-delay circuits. MARCONI CO. Ltd. Aug. 10, 1964 [Dec. 3, 1963], No. 47689/63. Heading H3T. A circuit for producing from an input pulse an output pulse of desired duration and delay comprises two transistors of opposite types with collectors and bases directly cross-connected, and a series chain of a resistor and two diodes across a source of potential, the input pulses being applied via a capacitor to the point between the diodes to cut off the lower one and the first transistor. A capacitor C2 between the top of the upper diode and the first emitter then charges so that the first emitter current increases to a point which enables the second transistor T2 to conduct (T2 is supplied from a lower potential than T1). The emitter potential of T1 then falls, cutting off the upper diode. C2 now charges through R4 and eventually the upper diode conducts again, dropping the emitter current of T1 to a point where T2 can no longer conduct. The output pulse width (across R3) is controlled by C2R4, and the delay by C1R4 and the input pulse amplitude. The delay time can be adjusted by an optional resistor R5. The types of transistor used for T1 and T2 can be interchanged. The circuit is particularly suitable for providing the gating pulses for an A.F.C. discriminator for the line time base of a television monitor, since double-frequency pulses cannot produce an output while T1 is cut off.
Patent GB-1052180-A (GB)
IPC: C07D295/26
Abstract: 1,052,180. Pesticidal compositions. FARBENFABRIKEN BAYER A. G. Dec. 9, 1964 [Dec. 11, 1963], No. 50139/64. Heading A5E. [Also in Division C2]. Compounds of the general formula:- wherein R represents an alkyl, cycloalkyl or oryl radical which may be substituted by a halogen atom or a nitroalkyl, oryl or trifluoromethyl group, or R represents sthe radical R.\ N-in which R 1  and R 2  separately stand R 2 / for alkyl radicals containing 1-4 carbon atoms or R 1  and R 2  together with the nitrogen atom denote a heterocyclic ring which may also contain an oxygen atom or a sulphone group, may be used as agents against pests. Compositions are described which are powders containing 5% by weight of the following compounds:-
Patent GB-1052832-A (GB)
IPC: A63B37/00
Abstract: 1,052,832. Golf balls. J. H. ONIONS. Nov. 5, 1965 [March 9, 1965], No. 9893/65. Heading A6D. In a golf ball of the type comprising an elastomeric core, windings of tensioned elastomeric thread and an outer cover, weighting material is introduced into the interstices between the windings. As particularly described the core comprises latex rubber, the winding thread comprises either latex rubber or polyisoprene, the cover comprises balata, gutta percha or transpolyisoprene, and the weighting material comprises litharge or a compound including lead or barytes as a component. Additional weighting material may also be incorporated in the cover of the ball.
Patent GB-1225745-A (GB)
IPC: G09G3/04
Filed: 1969-01-24
Abstract: 1,225,745. Symbol display system. SYSTEMES ET PERIPHERIQUES ASSOCIES AUX CALCULATEURS. 24 Jan., 1969 [25 Jan., 1968], No. 4238/69. Heading H4F. A symbol (e.g. alpha-numeric) display system comprises a mask carrying transparencies of different symbols arranged in the form of a raster i.e. in lines and columns, one or more electroluminescent sources which illuminate the mask, and one or more matrices of photo-electric detectors, the detectors of each matrix being arranged in the form of a raster to correspond to a field to be scanned, and a selected symbol being projected on a, or the, matrix from which a video signal in binary form corresponding to the selected symbol is derived for display on a cathode ray tube. The product of the number of sources and matrices is equal to the total number of symbols carried by the mask. In one embodiment, Fig. 5 (not shown), there is provided a column of electro-luminescent sources equal to the number of lines of the mask each illuminating a single line of symbols on the mask, and a line of matrices equal to the number of columns on the mask, the arrangement being such that the symbols on a line of the mask are projected on the line of matrices, and a single symbol is selected by selecting one of the matrices. The mask may be of cylindrical form, for each symbol an objective mounted on a cylindrical support being provided (compound lenticular optics), the axes of the two cylinders being coincident with the line of matrices, Fig. 8 (not shown). In this embodiment adjacent symbols on the mask are spaced apart to overcome optical projection errors. In a further embodiment, Fig. 9 (not shown), a plurality of sources corresponding to the number of symbols are each associated with a respective lenslet of a compound lenticular plate, and a second similar compound lenticular plate is associated with the mask, the selected illuminated symbol being projected by means of an objective lens on to a single matrix. To derive the video signal a line of the matrix is transferred, in parallel, to a register from which the binary signals are read out serially in the desired order for display. To vary the size of the symbol alternate lines or columns may be suppressed or repeated. The Specification includes a detailed explanation of logic and timing means for selecting the desired symbol together with its sequence and position of display in accordance to information derived for example from a computer. Interlaced, spiral or circular scanning may be employed.
Patent GB-1226311-A (GB)
IPC: F25B31/00
Filed: 1969-01-08
Abstract: 1,226,311. Centrifugal pumps for reciprocating compressors. DANFOSS A.S. Jan. 8, 1969 [Feb.1 1968], No.1107/69. Headings F1C, F1N. [Also in Division H2] In an encapsulated motor compressor, for a small refrigerating machine, having a pump which draws from a sump 42 cooling and libricating oil which is returned thereto in two streams which are via respectively a wall of the housing 1 and coil ends 18 of the motor stator 5, the latter stream passes directly, without any intermediate lubricating functions, from the pump to the coil ends. Thereby, as increased quantity of unheated oil may be passed to such coil ends, and in the embodiment shown this second stream is pumped by the conical element 31 of an outer tube 29 through a chamber 34, passages 35 in the rotor 12 or rotor bore or shaft exterior, to the coil ends. The lower coil ends 19 are cooled by a stream through radial passages 33 in the tube flange 32 or in the rotor squirrel-cage end ring 17, and by the second stream often passing through orifices 37 in the motor-carrier 2 and a deflecting device 39. The first stream is pumped by the conical element 22 of an inner tube 21 to a transverse hole 23 leading to a shaft bearing 3 and to at least three longitudinal bores 24...26 which open to a centrifuging disc 14 which throws the oil on to the housing wall and of which bores 24 and 26 extend through transverse holes (27, 28) Fig. 2 to a crank bearing 11 and a shaft bearing 9. In another embodiment, Fig. 4, the twin tube pump is replaced by a single tube having a protuberance (47) and holes (48) adjacent the lower end ring 17.
Patent GB-1227337-A (GB)
IPC: B67D1/14
Filed: 1967-08-10
Abstract: 1,227,337. Valves. ALUMASC Ltd. 26 July, 1968 [10 Aug., 1967], No. 36669/67. Heading F2V. A manually operable valve, particularly suitable for dispensing beer with a desired froth head, comprises a valve member 5 which is axially movable in relation to a seating 4 formed at the junction of an inlet 2 and outlet 3, a non-rotatable plug 7 through which the valve member stem 6 extends and whose upper surface is formed with two differently inclined cam surfaces, (15, 17, Fig. 2, not shown), which surfaces extend outwardly from a low point (16) corresponding to the closed state of the valve, and a sleeve 12 which has its lower end formed with follower surfaces corresponding to the plug cam surfaces, rotation of the sleeve, as by handle 19, serving to lift the valve member from its seat 4, the speed with which such lifting is effected being determined by which of the two cam surfaces is engaged. In an alternative embodiment, (Fig. 3-5, not shown), the differently inclined cam surfaces and followers are formed on the top end of the rotatable sleeve and the undersurface of a washer respectively, the washer being carried, in a non-rotatable manner, on the stem end. In either embodiment, the valve is formed with a cap 24, removal of which permits access to all valve and component parts.
Patent GB-1229972-A (GB)
IPC: G11B15/48
Filed: 1968-07-03
Abstract: 1,229,972. Control of D.C. motors. POTTER INSTRUMENT CO. Inc. 3 July, 1968 [10 July, 1967], No. 31719/68. Heading H2J. As in Specification 1,215,203 a low inertia motor of a single capstan tape transport is supplied with constant current during starting and stopping and constant voltage during running, but now the periods for which constant current flows are made to depend upon the state of the motor. Thus, if the motor is still accelerating towards maximum speed, when a stop command is given, then the period of constant current will be appropriately reduced. In the control system of Fig. 2 digital command signals arrive at point 112 from computer 32. With one state at 112 a gate 106 is closed to connect the lower end of a timing capacitor 36 to earth while a gate 104 is open allowing capacitor 36 to be charged from a constant current source 38. An AND gate 58 is open, allowing a signal E to pass to controller 28, until the voltage on capacitor 36 rises to break down Zener diode 52 closing the gate 58; meanwhile an AND gate 84 remains closed. When the state of point 112 is changed (stop command) gate 104 closes, to connect the upper end of capacitor 36 to earth, while gate 106 opens allowing the capacitor 36 to discharge through a constant current source 42. The AND gate 58 is closed but AND gate 84 is open, allowing a signal F to pass to controller 28, until capacitor 36 is fully discharged. The signals E, F respectively cause controller 28 to deliver a constant starting current and a constant stopping current to the motor 26. If a stop command is received before the end of the start period capacitor 36 will not be fully charged and will therefore discharge more quickly reducing the stop period. The two constant current sources 38, 42 are individually adjustable allowing for different stop and start periods to compensate for frictional losses.
Patent GB-1232011-A (GB)
IPC: C07C45/34
Filed: 1967-04-10
Abstract: 1,232,011. Electrochemical production of aldehydes. NATIONAL RESEARCH DEVELOPMENT CORP. 9 April, 1968 [10 April, 1967], No. 16364/67. Heading C2C. [Also in Division C7] An electrochemical redox process for the production of aldehydes from olefins comprises: (a) Providing an anolyte comprising an aqueous solution of a mercuric salt; (b) Providing a catholyte comprising an aqueous solution of an alkaline solute; (c) Applying an electric potential between electrodes in contact with said anolyte and catholyte while said anolyte and catholyte are separated by an anion exchange membrane permeable to anions in said catholyte but impermeable to metallic cations; (d) Passing a hydrocarbon compound through said anolyte, said compound being selected from the group consisting of: (2) Acyclic unsaturated hydrocarbon of the formula: wherein R 1  is a hydrocarbon radical and R 2  is hydrogen or a hydrocarbon radical; and (2) Cyclic unsaturated hydrocarbon of the formula: wherein R 3  is a bivalent hydrocarbon radical; and (e) Recovering aldehyde from said anolyte. Olefins which may be oxidized are propylene, butene-1, butene-2, butadiene and cyclohexene. The process may be carried out at atmospheric, sub- or super-atmospheric pressures. In an example, propylene is oxidized to acrolein. The anolyte comprises mercuric nitrate and HNO 3  and propylene is passed therethrough. The catholyte comprises KOH. The voltage may be constant or pulsed.
Patent GB-1232328-A (GB)
IPC: B65D85/32
Filed: 1969-08-19
Abstract: 1,232,328. Cartons. PACKAGING CORP. OF AMERICA. 19 Aug., 1969 [9 Jan., 1969], No. 41271/69. Heading B8P. A moulded carton 20 comprises a bottom section 21 having a peripheral flange 23 interrupted on its front wall by a set of protuberances 24a-24e, each comprising three side walls 25 and a top wall 26 forming a pocket open to the front and from below. A cover section 28 is hingedly mounted at 33 to the bottom section 21 and comprises a front wall 31a provided with locking means in the form of two lugs 37 having tapered sides to cam over the top of the protuberances 24a and 24e and snap into the pockets. Detents 38 on the cover section rest on top of the protuberances 24b and 24d in the closed position. A flange 32 is positioned behind upturned lips 27 on the bottom section. In a modification, the detents may be omitted and the locking means may be in the form of locking elements (137) each comprising a pair of members (140, 141) hingedly connected together (143) and to opposite sides of an opening (144) in the cover section wall, pressure being exerted on hinge (143) to push the members (140, 141) through the opening (144) to snap into the respective pocket (124a, 124e). In a further modification, detents (244) may be provided above the openings (245) for the locking elements, these detents having horizontal shoulders (246) to engage the tops of the protuberances in the closed position. The bottom and cover sections may be separately formed and locking means provided on both front and rear walls.
Patent GB-1232921-A (GB)
IPC: F16H1/46
Filed: 1969-03-27
Abstract: 1,232,921. Toothed gearing. ENGRENAGES ET REDUCTEURS ENGRENAGES CITROEN ET ETABS. MESSIAN REUNIS. 27 March, 1969 [27 March, 1968; 31 Dec., 1968], No. 16090/69. Heading F2Q. A hollow body 1 (e.g. a grinder or cement kiln) rotatable about an axis coaxial with an open end and a gear 4 at that end, is driven by a motor 12 and two planetary trains 15, 16 with stationary ring gears 20, 24, the planet carrier 18 of the first driving the sun gear 21 of the second, whose output shaft carries a gear 5 meshing with the gear 4, the gear 5 being sandwiched between the trains 15, 16. The gears 5, 17 . . . 24 may be duplicated on the other side and both sets with gear 4 be carried in a resiliently supported casing 6. Alternative mountings for the body 1 are shown (Figs. 4 to 7).
Patent GB-1238111-A (GB)
IPC: H03D1/22
Filed: 1969-03-05
Abstract: 1,238,111. Phase sensitive circuits. BROOKDEAL ELECTRONICS Ltd. 3 March, 1970 [5 March, 1969], No. 11628/69. Heading H3A. A phase sensitive detector comprises a transistor T 1  controlled by a signal applied at 1 and two alternative paths for current from the transistor between which the current is switched by means of transistors T 2  and T 3  controlled in antiphase by a reference signal applied at 2, 3 wherein diodes are included in the paths for compensating non-linearity in the signal transistor. The diodes may comprise transistors T 4 , T 5  similar to T 1  and having their bases strapped to their collectors. Where R 2 , R 2 <SP>1</SP> have a value n times that of R 1 , n diodes should be provided in each path.
Patent GB-1238929-A (GB)
IPC: C08F136/06
Filed: 1968-12-17
Abstract: 1,238,929. Butadiene polymerization to form a mixture of stereoregular polybutadienes. UBE INDUSTRIES Ltd. 17 Dec., 1968 [19 Dec., 1967], No. 60033/68. Heading C3P. Butadiene is homopolymerized in the presence of a catalyst which will yield a product of at least 70% cis 1,4 units and of a pre-formed polybutadiene containing at least 50% trans 1,4 units to yield a mixture of stereoregular polybutadienes. Conventional catalysts such as ziegler, rhodium chloride, peroxides, alkali metal and Alfin may be used to form the initial trans-1,4 product, while various catalysts based on metals and organometallic compounds may be used to form the cis-1,4 product. The polymer mixture may be vulcanized in the usual way and the final product has improved properties. In examples the catalysts employed are (a) trans - 1,4:VCl 3 /Et 3 Al, TiCl 3 /i-Bu 3 Al; and (b) cis-1,4:cobalt octoate/Et 2 AlCl, Co deposited on Zn/Et 2 AlCl, T:I 4 /Et 2 AlCl, Co/ Et 2 AlCl/HgCI 2 , cobalt or nickel acetylacetonate/Et 2 AlCl, CoCl 2 /Et 2 AlCl, NiCl 2 /Al/PCl 5 , nickel naphthenate/Et 3 Al/BF 3 .Et 2 O, Ti(OBu) 3  Cl/Et 2 AlI, CoCl 2 /Al/PCl 5 , Co/EtAlCl 2 /pyridine, and TiI 4 /i-Bu 3 Al.
Patent GB-1239234-A (GB)
IPC: G11B15/675
Filed: 1968-10-23
Abstract: 1,239,234. Cassette tape recorders. ENGLISH NUMBERING MACHINES Ltd. 30 Sept., 1969 [23 Oct., 1968], No. 50342/68. Heading G5B. A tape recorder includes a cassette receptacle 2 having a raised rib 9 engagable in a groove in a cassette to guide the cassette to an operative position where it is held and spool brakes released. The recorder has a stepping motor 21 driving a capstan 25 through antibacklash gears 23, 24, and a gear 8 through a slipping clutch 28 and gear 29. The underside of the cassette, Fig. 5, carries a deformable gear 7 designed to mesh with the gear 8 and drive the take up spool through further gears 72, 70. Both spools are normally locked by a pawl 87, 88 loaded by a spring 90 attached to a pin 91 normally disposed in the groove 101. The cassette is located under roller 33 and pushed in to the right so as to mesh gears 7, 8 and allow ribs 54, 36 of enter the groove 101 and release the pawls 87, 88. A pushbutton 52 is then depressed to shift an L-shaped slide 48 across the receptacle to engage behind a wall 105 in the cassette base to lock the cassette in position and to remove a projection 51 from the lip 50 of the receptacle allowing a cover to be replaced, thereby operating a microswitch allowing the machine to be operated. The cassette is non-invertable and a separate rewind operation is necessary, the supply spool shaft having a screw-driver slot permitting coupling. The machine may also use a smaller, invertable cassette, Fig. 9, containing a spring-loaded pressure pad 126 movable by a linkage 128, 132, 133, 135 in a non-linear path said to reduce the tendency of the pad to stick. A spring member (149, Figs. 8, 10, not shown) extending into the groove (140) is engagable by the guide 36 to release cross-pegs (142, 143) from deformable gear-wheels (117, 118) on the spool shafts (113, 114). A modified machine capable of receiving the smaller cassette and also the larger if so adapted, is otherwise identical to the above machine but includes an overcentre linkage (201, 202, 206, 207, Figs. 12, 13, hot shown); carrying bosses (203, 214, 215) designed to snap behind the cassette and latch it in position, the location of the bosses being adjusted and the biasing spring (223) being repositioned to allow the larger cassette to be used.
Patent GB-1252027-A (GB)
IPC: D21F1/06
Filed: 1969-02-10
Abstract: 1,252,027. Papermaking. DOMTAR Ltd. 10 Feb., 1969 [21 Oct., 1968], No. 7011/69. Heading D2A.  A web is formed from stock containing cellulose fibres and light-weight aggregate by producing the stock at a consistency of 6-35%, maintaining a body of the stock in a headbox, subjecting the body to a reciprocating action positively advancing the stock in one direction, the reciprocating action providing substantially the sole means of causing stock flow from the headbox, and controlling the flow of stock onto a forming surface to form a web of uniform thickness. As shown, stock is fed from mixer 10 to hopper 12, and hence, via regulating valve 14, which may be controlled by the level L of stock in the headbox, to headbox 16. The rear wall of the headbox may be reciprocated, and stock flows onto wire 20 under slice roller 18. The web passes via press rolls 34 to dryer 36. The whole of the headbox, including sides and bottom, may reciprocate. The bottom of the headbox may be inclined to the horizontal.
Patent GB-1252052-A (GB)
IPC: C07F7/18
Filed: 1969-09-15
Abstract: 1,252,052. Laminates. DOW CORNING CORP. 15 Sept., 1969 [14 Oct., 1968], No. 45311/69. Heading B5N. [Also in Divisions B1-B2, C1, C3 and D1] A method of bonding an acetal, phenolic, aminoplast, polyamide or epoxy resin to a solid material which is a siliceous material, a metal or a metal oxide comprises (1) applying to the solid material a silane of the formula X 3 SiRCH(OR<SP>1</SP>) 2  or or a partial condensate thereof, in which R is a divalent hydrocarbon radical or a divalent hydrocarbon radical containing ether or thioether linkages which is bonded to the Si atom by an Si-C linkage, R<SP>1</SP> is an alkyl radical of less than 7 carbon atoms or an acetyl radical, R<SP>11</SP> is a hydrogen atom, an alkyl radical of less than 7 carbon atoms, an acetyl radical or a hydroxyalkyl radial, and X is a hydroxyl group or a hydrolysable radical, and (2) bonding the treated substrate to the resin. The substrate may be a glass fabric, a glass sheet or an aluminium sheet. The examples, describe the formation of laminates by the application of heat and pressure to an assembly of sheets of glass fabric which have been sized with a silane and impregnated with an epoxy or phenolic resin.
Patent GB-1257412-A (GB)
IPC: G21K5/08
Filed: 1970-03-04
Abstract: 1,257,412. Induction heating apparatus. COMMISSARIAT A L'ENERGIE ATOMIQUE. 4 March, 1970 [5 March, 1969], No. 10384/70. Heading H5H. [Also in Divisions G4-G6] In an electric induction furnace, for use inside a nuclear reactor, materials are heated during neutron irradiation tests in the reactor. The samples, 12, to be irradiated are supported in the heat diffuser slats, 8, which occupy the cladding tube, 1. The electrical conductivity of tube 1 is matched to the operating parameters of the induction furnace in which it is located. The diffuser may be of molybdenum or graphite and the cladding of niobium. The temperature of the samples is monitored by the thermocouple, 16.