baber/WOPTO huggingface dataset:
Patent GB-903555-A (GB)
Title: Improvements in or relating to esaki diode logic circuits
IPC: H03K19/10
Filed: 1960-10-12
Abstract: 903,555. Tunnel diode-switching circuits. NIPPON TELEGRAPH & TELEPHONE PUBLIC CORPORATION. Oct. 12, 1960 [Oct. 29, 1959; Oct. 30, 1959; Nov. 2, 1959; Dec. 8, 1959], No. 34972/60. Class 40 (6). A two condition switching circuit of the type comprising two tunnel diodes connected in series between terminals supplying equal and oppositely varying voltages whereby one or other of the diodes may be switched to its high voltage condition, means are provided for differentially varying the apparent capacitance of the diodes in order to determine which of the two diodes is so switched. As shown, two tunnel diodes 2, 2<SP>1</SP> are connected to equal and opposite pulse sources 1, 1<SP>1</SP> so that one of the two diodes is switched causing potential at A to be negative or positive with respect to earth. Input pulses are supplied at B just before the pulses 1, to vary the value of potential variable capacitors 4, 4<SP>1</SP>. A positive pulse at B would, in the circuit shown, reduce the voltage across capacitor 4 thus increasing its capacitance and correspondingly reducing the capacitance of capacitor 41 so that tunnel diode 2<SP>1</SP> is switched by the pulses 1, 1<SP>1</SP> and output terminal A also goes positive. If the capacitances 4, 4<SP>1</SP> are of a type which provides increased capacitance with increased voltage the circuit switches to the other condition and the output pulse is of opposite polarity to the input pulse so that a " NOT " circuit is provided. A decreasing capacitance with increasing voltage is obtainable from a ferro-electric type capacitor or a reversely biased semi-conductor diode while capacitors which increase in value with the voltage may be formed from silicon carbide or as from semi-conductor diodes biased forwardly to an extent less than the contact potential. Bias may be applied to the potential variable capacitors from a separate source, in which case blocking capacitors must be connected in the leads between the variable capacitors and the tunnel diodes (Fig. 5, not shown). The input pulse to terminal B may alternatively be connected to a centre point of a pair of resistors connected in series between the outer terminals of the variable capacitors (Figs. 6, 7 and 9, not shown), but in this case capacitors varying in the opposite direction with applied voltage must be used to obtain the same polarity output as in the previous circuit. Where semiconductor diode capacitors are used the diodes may be biased in the reverse direction to the polarity of the switching pulses 1, 1<SP>1</SP> (Fig. 11, not shown). The circuits are suitable for use in " majority lodgic " systems in which case they may be connected to a number of further circuits in parallel.
Patent GB-392849-A (GB)
Title: Improvements in or relating to electric discharge devices
IPC: F23Q1/00
Filed: 1932-12-09
Abstract: 392,849. Discharge apparatus. TELEFUNKEN GES. FœR DRAHTLOSE TELEGRAPHIE, 12, Hallesches Ufer, Berlin. Dec. 9, 1932, No. 34999. Convention date, Dec. 9, 1931. [Class 39 (i).] Deposits of electron-emitting material formed on the anode or other electrode of a valve during manufacture are removed by setting up a glow or other discharge between the anode &c. and the cathode in a filling of gas such as argon, the anode &c. acting as the cathode of the discharge and the cathode as anode. The cathode may be heated during the discharge.
Patent GB-961723-A (GB)
Title: Improvements in retaining frames for underground passages
IPC: F16B2/14
Filed: 1960-10-12
Abstract: 961,723. Yielding mine arches. APPLICATIONS SCIENTIFIQUES, TECHNIQUES, INDUSTRIELLES ET COMMERCIALES. Oct. 12, 1960 [Oct. 16, 1959; April 19, 1960], No. 35020/60. Heading E1E. A yielding mine arch, Fig. 3, consists of segments C, P which are clamped together by a support A having nuts e 1 , e 2 , clamps S 1 , S 2 , a stay E and, if desired, wedges C 1 , C 2  arranged as shown, the flanges of the member P being grooved at 4 to accommodate the support A. In a modification, the U-shaped support A is replaced by opposed plates which are bolted together and provided with suitable flanges for engaging the arch segments, see Figs. 4-9 (not shown). In a further modification, Fig. 11, the support 15 is recessed at 16 and bolted to a key 18, a slotted key 19 and a stay 21 composed of two arms 23 bolted together. If desired, the members 18, 19 of the embodiment of Fig. 11 may be dispensed with and the member 15 replaced by a strap of round iron, see Figs. 13 and 13a (not shown).
Patent GB-1172598-A (GB)
Title: Fluid Pressure Operated Hand Tools
IPC: B27B17/02
Filed: 1967-07-31
Abstract: 1,172,598. Wrenches. NEW DRAULICS Inc. 31 July, 1967 [1 Aug., 1966], No. 35040/67. Heading B3N. [Also in Divisions A1, B5 and F2] A fluid pressure-operated power wrench is controlled by a valve having a manually depressible plunger which, when depressed, closes an outlet port of the valve. This allows pressure to build up both inside the valve housing and in a line connected to the tool operating means. The pressure build-up in the valve housing acts on the movable valve element in such a way as to bias it toward the outlet-port-open " release " condition. A wrench (not shown) powered by a rotary fluid motor has that motor controlled by a valve including a plunger 190, Fig. 12, which when depressed can fully close an outlet port 208 whilst leaving an inlet port 206 still partly open. The inlet port communicates with a chamber 160 to which a fluid inlet pipe 166, Fig. 11, and also a passageway 162 leading to the fluid motor are both open. The outlet port communicates with a chamber 164 connected to a fluid return pipe 168, so that the fluid flow normally by-passes the conduit leading to the motor. When the outlet port is closed by depression of the plunger the by-pass between the inlet and return pipes is interrupted and pressure is applied both to the fluid motor and to the base of the valve plunger itself. This ensures that the valve is pressure-biased toward the " release " position, so that a spring loading is unnecessary, and also acts as a safety mechanism since over-pressure caused by an excessive load on the tool will tend to displace the valve plunger upwardly.
Patent GB-341190-A (GB)
Title: Improvements in cases for materials such as lipsticks, eyebrow pencils, and the like
IPC: A45D42/02
Filed: 1929-11-16
Abstract: 341,190. Vanity cases. SCHALL, J., 23, Boulevard des Capucines, Paris. Nov. 16, 1929, No. 35120. [Class 18.] In a case for a lipstick, eyebrow pencil &c. provided with a mirror and in which the lipstick is carried by the cover of the case, the mirror is displaced longitudinally of the case as the cover is withdrawn until it abuts against retaining members carried by the case and is thus supported thereby. As shown the ends of the mirror e are slotted and provided with laterally projecting lugs e<2>, those at one end of the mirror serving to hold it resiliently in the cover a<1> and those at the other end of the mirror engaging grooves in the case and serving to hold the mirror resiliently therein and abutting against stops a<2> on the case when it is withdrawn therefrom. The case is preferably triangular in cross section and the mirror may be made in the form of a triangular hollow prism to slide therein. The lipstick b is carried in a plug slidably mounted in a holder c of triangular cross section fixed to the cover a<1> and is moved by a stop d<1> fixed to the plug and projecting through a slot c<0> in the holder.
Patent GB-605548-A (GB)
Title: Improvements in and relating to the manufacture of sulphonamides
IPC: H03H7/34
Filed: 1945-12-31
Abstract: N4-Phthalyl-sulphanilamides are made by condensing p-phthalimidobenzene sulphonyl halide with a compound RNH2 (in which R is hydrogen or a monovalent organic substituent such as an aryl, alkyl or heterocyclic group) and then partially hydrolysing the product, for example, by means of aqueous alkali. In examples: (1) concentrated aqueous ammonia is added to p-phthalimidobenzene sulphonyl chloride in dioxane and the p-phthalimidobenzene sulphonamide is hydrolysed to N4-phthalysulphanilamide by refluxing with aqueous sodium hydroxide; (2) phthalimidobenzene sulphonyl chloride is boiled with aniline, and the sulphonamide formed is hydrolysed to N4-phthalyl-N1-phenylsulphanilamide by boiling with aqueous potassium hydroxide; (3) 2-aminopyridine is heated with p-phthalimidobenzene sulphonyl chloride and the product hydrolysed to N4-phthalylsulphapyridine by means of sodium hydroxide solution; and (4) 2-aminothiazole in pyridine and dioxane is treated with phthalimidobenzene sulphonyl chloride and the product hydrolysed with potassium hydroxide solution to give N4-phthalylsulphathiazole.
Patent GB-1025297-A (GB)
Title: Improvements in or relating to electrolytic machining
Inventor: TAYLOR JOHN
IPC: B23H3/08
Filed: 1964-08-27
Abstract: <PICT:1025297/C6-C7/1> The sharp edge(s) of an aperture 14, Fig. 3, within a metal workpiece 13 are electrolytically smoothed using a nozzle-electrode assembly 20-21, the nozzle of which is the same shape as, but of somewhat larger internal dimensions than, the aperture and by causing electrolyte to flow continuously through the nozzle and over the sharp edges while making the workpiece electrically positive relative to the electrode.  The nozzle electrode assembly comprises an outer tubular structure 20 of electrically non-conductive material containing a rod of plate electrode 21 electrically connected by a set screw 22 Fig. 1 (not shown) illustrates an assembly of eight nozzles arranged in a circle and supplied with electrolyte from a common manifold.  Fig. 5 (not shown) illustrates a turbine disc 40 which has been machined to provide a "fir tree" blade root 41 having an enlarged inner end 42. The edges of the aperture at the end 42 are electrolytically smoothed by an elliptical nozzle-electrode assembly 44-45.  Specified electrolytes are solutions of NaCl, Na2SO4 and NaNO3.
Patent GB-1100953-A (GB)
Title: A transmission for a twin axle reversing drive
Inventor: LEHEL VICTOR
IPC: F16H3/00
Filed: 1967-01-13
Abstract: 1,100,953. Reversing gearing. ALFRED WISEMAN & CO. Ltd. 13 Jan., 1967, No. 35328/67. Addition to 1,100,952. Heading F2D. [Also in Division B7] A transmission system for a rail vehicle bogie including a forward-reverse gear, comprising a splined pinion 3 axially slidable on a shaft 6 to mesh either a gear 5 keyed on an input shaft 1 or a parallel stepped idler 11, 13 continuously meshing a gear 10 keyed to the input shaft 1. The shaft 6 carries a bevel pinion 7 meshing a crown-wheel 14 on an axle 15, and is coupled at 16 to the bevel final drive of a second axle.
Patent GB-1176329-A (GB)
Title: Preparation of Organic Isocyanates and Isothiocyanates
IPC: C07C331/16
Filed: 1967-01-05
Abstract: 1,176,329. Isocyanates and isothiocyanates. ROHM & HAAS CO. 5 Jan., 1967 [6 Jan., 1966], No. 35352/69. Divided out of 1,176,328. Heading C2C. Organic isocyanates and isothiocyanates are prepared by reacting a carbonyl dihalide or thiodihalide with an amino ester or acid addition salt thereof, where the amino ester is a condensate of (i) a mono-amino-monocarboxylic acid, a mono-amino-dicarboxylic acid, a diamino-mono-carboxylic acid or a diaminodicarboxylic acid, and (ii) an alcoholic hydroxyl compound selected from C 2-18  dihydroxy alcohols where both hydroxy groups are primary, C 2-8  amino-alkanols, amino-alkoxyalkanols, and amino-alkylthioalkanols having a primary amino group and a primary or secondary hydroxyl group and primary or secondary monohydric alcohols. The alcohols may contain inert substituents and one or more ether or thiether linkages in the carbon atom chain. Products of the formulµ where X is NCO or NCS, m and n are 1 or 2, R<SP>1</SP> is the residue of a C 2-18  diol having primary terminal carbons, R<SP>2</SP> is the residue of a primary or secondary monohydric alcohol, R<SP>3</SP> is an alkylene radical having 2 to 8 carbon atoms which may contain inert substituents and an O or S atom in the carbon chain, and R<SP>4</SP> and R<SP>5</SP> are alkylene, arylene, cycloalkylene or aralkylene, are claimed.
Patent GB-845802-A (GB)
Title: "diode switching device"
IPC: H03M1/00
Filed: 1958-04-15
Abstract: 845,802. Electric distributers. NORTH AMERICAN AVIATION Inc. April 15, 1958 [April 17, l957], No. 35383/59. Divided out of 845,801. Class 40(3). [Also in Group XL(c)] A switching circuit uses a silicon diode having current-voltage curves at two different temperatures which cross as shown in Fig. 5, the diode in use being biased to a current flow (1.25 m.a.) substantially equal to that at the cross-over point so that it is substantially independent of temperature effects. The switching circuit is used in a multiplexing system as described in Specification 845,801 in which analogue values received on a number of channels are sampled in turn and applied through a voltage clamp to an analogueto-digital converter, the digital equivalents being stored briefly in a buffer store and then recorded on a magnetic tape. The multiplexer. In Fig. 4 is shown a multiplexer for only four channels 681, 682, 683, 684 which are to be connected in turn to output terminal 685. Connections are made from each of these channels through diodes 673-676 which normally block the negative analogue signals. Anodes of triodes 649-652, connected to the input channels are rendered conducting in turn by connections from a ring of triggers 695-698 receiving timing pulses on terminal T2. The diodes are thereby unblocked in turn to apply the analogue signals from each input channel to the output terminal 685 for transmission to the clamp circuit. Voltage clamp. The analogue signals from the multiplexer appear on input terminal 632 Fig. 3. Four diodes 614, 615, 616, 617 are bridge connected so that current can flow from positive terminal 621 through terminal 618 and 619 to negative terminal 622. Triodes 608, 609 are connected so as to bypass respectively the diodes and resistor 624 and the diodes and resistor 623. The grids are connected to control terminal 627 through condensers 628, 629 and a negative pulse is applied in each cycle. The input terminal 632 is connected to the diodes at 634 and the corresponding terminal 635 to the grid of a cathode follower 612, connected in series with a second cathode follower 611 between the positive and negative terminals. When there is no signal on input terminal 632 the triodes 608, 609 conduct heavily so that terminal 618 is well negative of terminal 619, the diodes are cut off and the charge on condenser 643 is isolated. This charge controls the output of the cathode followers 611, 612 at terminal 642. When the negative pulse arrives on terminal 627 triodes 608, 609 cut off and the diode array is in series with the resistors 623, 624 between positive and negative lines. The diodes conduct and the voltages at the junctions 634, 635 are determined by the resistors 623, 624. An input analogue signal on terminal 632 modifies the voltage at 635 thereby changing the charge on condenser 643 and accordingly the output signal on 642.
Patent GB-805924-A (GB)
Title: Improvements in circuits for electric discharge lamps
IPC: H05B41/232
Filed: 1955-12-09
Abstract: 805,924. Supply systems for space-discharge devices. GENERAL ELECTRIC CO. Dec. 9, 1955 [Dec. 9, 1954], No. 35441/55. Class 38 (4). In a circuit arrangement for starting and operating from an A.C. supply two electric discharge lamps 1, 2, there is provided a ballast transformer 7 comprising a magnetic core 14 carrying a primary coil 8 connectable to the supply and two serially connected high voltage reactance secondary coils 12, 13 across which is connected a series combination containing one lamp 1 only and a capacitor 17, while the other lamp 2 is connected across a further series combination of the primary coil 8 and one 12 of the secondary coils : the open circuit voltages across the secondary coils 12, 13 are mutually additive and the total secondary voltage magnitude is sufficient to start the one lamp 1 while the voltage magnitude of the further series combination 8, 12 once lamp 1 is operating is sufficient to start the other lamp 2. The secondary coil 13 limits the current flow during operation and in the embodiment shown there is provided a third secondary coil 11 which is tightly magnetically coupled to the primary coil 8, forms part of both series combinations, and whose open circuit voltage is subtractive from those of the other secondary coils 12, 13.
Patent GB-850485-A (GB)
Title: Improvements in or relating to thread sizing machines
IPC: D06B1/14
Filed: 1957-11-15
Abstract: 850,485. Coating threads. RUTI MACHINERY WORKS Ltd., [formerly HONEGGER, C.]. Nov. 15, 1957 [Nov. 24, 1956], No. 35675/57. Class 140. An apparatus for sizing threads having cooperating feeding and pressure rollers 1, 2, respectively, has compressed air nozzles 5 disposed proximate opposite ends of the rollers 1, 2 to blow size away from the end zones of the rollers. The nozzles 5 are slidably mounted on members 6. The roller 1, which receives size from a vessel beneath it, if desired from a roller 3 in the vessel, has a roughened surface and may be heated. The roller 2 has a rubber sleeve 2a which may be covered with cloth.
Patent GB-1315848-A (GB)
Title: Sulphonation process product and use
IPC: C10M159/24
Filed: 1970-07-23
Abstract: 1315848 Overbased-barium sulphonate ETHYL CORP 23 July 1970 [30 July 1969] 35685/70 Heading C2C [Also in Divisions C4 and C5] A process for preparing an overbased barium sulphonate comprises the steps of (1) preparing a mixture of barium carbonate and a C 1 -C 5  primary alkanol in which the molar ratio of barium carbonate to alkanol is from 1 : 10 to 1 : 60, an olefin sulphonic acid obtained by sulphonating a mixture of acyclic predominantly alpha-monoolefins having from 12 to 32 carbon atoms, in an amount, in moles, up to the molar concentration of the barium carbonate, at least 2% by weight of water based on the weight of the olefin sulphonic acid, and an inert hydrocarbon medium, (2) refluxing the mixture until the evolution of carbon dioxide has essentially ceased, (3) passing sulphur dioxide into the mixture and intermittently or continuously introducing additional barium carbonate until the total molar concentration is from 2 to 5 times the molar concentration of the sulphonic acid, (4) passing additional sulphur dioxide through the mixture for up to 3 hours, and (5) distilling the alkanol and water from the reaction mixture. Many mixtures of olefines are specified.
Patent GB-356583-A (GB)
Title: Improved arrangement of the ignition space of pulverised fuel furnaces
IPC: F23C99/00
Filed: 1930-11-28
Abstract: 356,583. Pulverulent-fuel furnaces. STUG KOHLENSTAUBFEUERUNG PATENTVERWERTUNG GES., Cassel, Germany. Nov. 28, 1930, No. 35843. Convention date, Dec. 13, 1929. [Class 51 (i).] A pulverized fuel furnace particularly intended for locomotives is provided with an ignition chamber h arranged in the mixture supply conduit a<1> between the burner head b<1> and the firebox wall, the ignition chamber being provided with a constriction f<1> formed by making the lining of venturi shape.
Patent GB-865980-A (GB)
Title: Improvements in or relating to armour bonds for electric cables
IPC: H02G15/105
Filed: 1958-11-07
Abstract: 865,980. Earth-continuity couplings. BILLING, H. V. Nov. 7, 1958, No. 35896/58. Class 38 (1). An armour bond for electric cables is formed by a low-resistance deformable copper strip 1 surrounding a cable with both ends 2, 8 passing through apertures 5, 7 of bridging member 4, and optionally, steel link 6, the strip being tensioned by a tool engaging aperture 3. To prevent deformation of the cable, armouring 11 is first fitted over split-ring 9 on cable 10. After tensioning, ends 2, 8 are hammered into contact with members 4 and 6 and may be soldered thereto. The other end of member 4 is similarly fixed to a second strip secured to an adjacent cable. The bond may be enveloped in a moulded mass of polyvinyl chloride or polychloroprene. Braided copper 12 between strip 1 and armouring 11 improves the electrical connection. Specifications 794,734 and 865,979 are referred to.
Patent GB-387097-A (GB)
Title: Concrete road
IPC: E01C5/08
Filed: 1931-12-29
Abstract: 387,097. Roads. OTTIKER, K., 37, Hofwiesenstrasse, Zurich, Switzerland. Dec. 29, 1931, No. 35913. [Classes 20 (iv) and 107.] A road construction comprises longitudinal walls or girders 1, 2, 3 and spaced apart transverse girders 5 of reinforced concrete bearing on the tops of the walls or girders 1, 2, 3 for carrying the main concrete body part of the road which is cast in situ. The transverse girders are provided with ledges for supporting permanent centering 18, which is adapted to support a reinforced concrete layer 13. Transverse horizontal rods supported by the ledges of the girders may be arranged at regular intervals between the centering elements 18. If desired, two transverse girders 5 may be arranged in adjacent relation as shown in Fig. 3, with an expansion joitn 17 formed from a copper strip disposed between the girders. Expansion joints may also be provided in the longitudinal walls. The walls and girders may be cast in situ. Such parts of the walls as are embedded in the ground are provided with a covering of glass, bitumen, or other protective material. The road surface proper 19 carried by the main concrete body 13 may consist of asphalt or concrete. A road construction may comprise two or three longitudinal walls, and the girders may overhang at each side to constitute supports for the pavements.
Patent GB-522576-A (GB)
Title: Improvements in or relating to defrosting of cooling members of refrigerating apparatus
IPC: F25B47/02
Filed: 1938-12-09
Abstract: 522,576. Refrigerating. ELECTROLUX, Ltd. Dec. 9, 1938, No. 35975. Convention date, Feb. 19. [Class 29] Absorption systems. - Defrosting of the evaporator 18, 20 of a heat-operated refrigerating system, 'particularly one of the inert gas type, is effected by manual displacement of an apparatus element to empty a liquefied refrigerant seal 16 and allow passage of uncondensed vapours from the expulsion pipe 11 to the evaporator. The displaceable element returns to its normal position so that the seal is restored after the evaporator has been defrosted. An S pipe 41 is connected to the expulsion pipe and to the limb 14 of the liquid seal, and a pipe 44 connects the left limb of the seal with the S-pipe at an overflow point 42 at the level I at which the feed pipe 17 opens into the low-temperature part 18 of the evaporator. A flexible displaceable conduit element comprising a coil 48, 'a swanneck 49 extending above the overflow point 42, and a second coil 50 and conduit 51 is connected between the lower part of the S-pipe and the top of the absorber 25 or other liquor-containing member of the system. The swan-neck portion of the conduit may be lowered by a handoperated member 52 so that its upper end comes below the level I, whereupon the liquid syphons out of the seal through the coils into the pipe 51 and expelled vapours enter the evaporator and warm it to effect defrosting. The vapours eventually condense in the evaporator and also in the S-pipe, which may be finned, and gradually the liquid seal up to the connecting point 43 reforms and blocks further flow of vapour to the evaporator. Any inert gas which may have been sucked into the condenser 13, 15 in the defrosting process is forced back into the evaporator system as soon as the seal is reformed. The coils 48, 50 may be replaced by flat spirals, and the S-pipe may be connected to the vapour pipe beyond the rectifier 12 or above a water separator at the lower end of the expulsion pipe 11. The restoration of the manual actuating means should be retarded to ensure sufficient time for the seal to empty.