baber/WOPTO huggingface dataset:
Patent GB-1414133-A (GB)
Title: Catalysis
IPC: B01D53/86
Filed: 1971-11-18
Abstract: 1414133 Gas separation JOHNSON MATTHEY & CO Ltd 16 Nov 1972 [18 Nov 1971 (2)] 53652/71 and 53653/71 Heading C1A [Also in Division B1] Effluent gases are treated either under reducing conditions to remove nitrogen oxides or under oxidizing conditions to remove carbon monoxide and/or organic compounds by contacting them with catalysts comprising an inert carrier impregnated or coated with a mixture or alloy comprising apart from impurities 5-55 wt. per cent ruthenium, 1-20 wt. per cent rhodium, 0-20 wt. per cent base metal or metalloid and balance platinum.
Patent GB-1354802-A (GB)
Title: Schotky barrier diode
IPC: H01L29/872
Filed: 1971-11-18
Abstract: 1354802 Schottky diodes RCA CORPORATION 18 Nov 1971 [27 Nov 1970] 53706/71 Heading H1K The Schottky diode shown has a diffused or ion-implanted guard-ring 14 of opposite conductivity type to the body 12 and which when the diode is reverse biased is connected to the surface barrier electrode 20 by an inversion layer. This eliminates problems otherwise caused by the high field at the edges of the electrode. That portion 20b of the electrode under which the inversion layer is needed is preferably made thinner (as shown) than the remainder of the passivation. The passivation may be one or more of silica, alumina, and silicon nitride. Suitable semi-conductors and respective barrier metals are Si/Al, Cr, Rh; Ge/Au, Cr; and A<SP>111</SP> B<SP>v</SP>(e.g. GaAs)/Al, Au.
Patent GB-1283099-A (GB)
Title: Penicillin derivatives
IPC: A23K20/195
Filed: 1969-11-06
Abstract: 1283099 Penicillins AMERICAN HOME PRODUCTS CORP 6 Nov 1969 [20 Nov 1968 (2)] 54389/69 Heading C2A Novel 6 - (1 - aminocyclopentene - 1 - carboxamido) penicillanic acids of formula (A) and their non-toxic salts, wherein Z is -NHR<SP>1</SP> or a protected amino group, R<SP>1</SP> is H, C 1 -C 7  alkyl or phenyl (C 1 -C 7 ) alkyl, and the dotted line represents a second bond in one of the two designated positions, are prepared by acylating 6-amino-penicillanic acid or its salt or silyl or silenyl derivative with an acid of formula or a functional acylating derivative thereof, and optionally removing the amino - protecting group. The compounds (A) above wherein Z is NHR<SP>1</SP> may be condensed with an aldehyde or ketone of formula R<SP>2</SP>R<SP>3</SP>CO to give novel 6-(4-oxo-1,3- diazaspiro[4,4]nonen - 3 - yl) penicillanic acids of formula (B) or their non-toxic salts, wherein R<SP>2</SP> and R<SP>3</SP> are each H, C 1 -C 7  alkyl or phenyl, or when taken together with the carbon atom to which they are attached form a C 3 -C 7  cycloalkyl ring, and R<SP>1</SP> and the dotted line are as defined above. The preferred acylating agent is the N-carboxy-anhydride of the acid, which is a 3 - oxa - 1 - azaspiro[4,4]nonene - 2,4 - dione of formula wherein R<SP>1</SP> is as above. Pharmaceutical compositions having antibacterial activity against gram-positive and gram-negative bacteria comprise a penicillin of formula (A), wherein Z is -NHR<SP>1</SP> as defined above or of formula (B), or a non-toxic salt thereof together with a pharmaceutically acceptable carrier.
Patent GB-1239779-A (GB)
Title: Gaseous discharge display device
Inventor: MAYER WILLIAM NORMAN
IPC: G09G3/288
Filed: 1968-11-18
Abstract: 1,239,779. Gaseous discharge matrix displays. CONTROL DATA CORP. 18 Nov., 1968 [28 March, 1968], No. 64621/68. Heading G5C. Each gas cell 102 of the display 100 is capacitatively coupled to a pair of electrodes 104, 106; each cell 102 is capable of retaining a memory voltage after the drive voltage has been removed and the discharge has ceased; and there are means 112, 114 for supplying a unidirectional voltage and means 110 for supplying an oscillating voltage, the peak sum of both voltages being sufficient to fire a selected cell. As described, a particular X- drive line 106 is selected by (i) choosing one of the two write pulse generators 112, 114 (this in effect selects four of the lines 106) and (ii) clamping the three undesired lines 106 to ground by means of, e.g. clamps 118, 120, 122. A similar process is followed in circuitry 126 to select the desired Y-line 104. Once a cell has been ignited it will continue to operate on the oscillating sustain voltage 110, owing to the favourable bias provided by the retained memory voltage. To erase a cell, the memory voltage is destroyed by (i) ceasing to apply sustain pulses, (ii) applying a slowly increasing write pulse; this causes the cell to fire prematurely and hence to lose its memory voltage. The modulation of light intensity is achieved by controlling the frequency of the oscillating sustain voltage 110. Transistor circuits for supplying the various drive voltages are described (Figs. 6 to 8, not shown).
Patent GB-1258576-A (GB)
IPC: F16K31/48
Filed: 1969-01-19
Abstract: 1,258,576. Ignition and control of burners. PARKINSON COWAN Ltd. 8 Jan., 1970 [19 Jan., 1969], No. 54727/68. Headings F4F and F4T. In a gas control and electric spark ignition, system for a gas burner, the gas supply to the burner is controlled by a gas tap comprising a plug 3 received as a rotary fit in a tap housing 1, and a spark generation means (not shown) is provided which is triggered by turning on the gas tap so as to momentarily generate a spark across a spark gap to ignite the gas issuing from the burner; a delay means is provided such that the delay between turning on the gas tap and the generation of the spark is long enough to ensure a combustible mixture at the burner by the time a spark is generated. The plug 3 controls gas flow through the gas passages 4 and an operating spindle 5 is keyed by a finger 8 to notches 9 in the plug so as to rotate with the plug and yet remain free to move axially with respect to the plug, the spindle being urged away from the plug and the tap housing by a spring 14, housed in an enlarged cylindrical end portion 6 of the spindle. In the normal "off" position of the tap, the finger 8 is urged by the spring towards notches 15 in a plate 11, which is part of the tap housing, so that the spindle 5 has to be moved axially towards the plug 3 to disengage the finger 8 from the notches before the spindle can be rotated and the gas tap turned on, the angle through which the spindle can be rotated is determined by the angular position of two shoulders 16, 17 formed in the tap housing. If the tap is turned on too rapidly, a further shoulder 18 between shoulders 16, 17 acts as a stop means since the initial axial pressure on the spindle has to be-released before the tap can be rotated into the fully "on" position. If, however, the tap is turned on slowly, the initial axial pressure being released during this operation, the finger 8 will be clear of the shoulder 18 by the time it reaches the angular position of the shoulder 18 so that the stop means does not interfere with the normal restrained use of the tap. Associated with the tap as described above may be a piezo-electric spark ignition system operated mechanically by rotation of the spindle into the fully "on" position. Alternative embodiments described are electrical delay means in which the spark generation system involves use of an electrical coil, or an alternative mechanical delay system involving use of dashpots and/or friction devices.
Patent GB-1100110-A (GB)
Title: Method for increasing the productivity of sub-terranean formation
IPC: E21B43/267
Filed: 1965-12-28
Abstract: Spherical beads for propping well fractures and which pass through sieves having 4.76-0.42 m.m openings are formed by quenching molten metallurgical slag particles to a temperature lower than 482 DEG C. Blast furnace slags, silica manganese slag, or alumina silicate slag at 222 DEG C. above their melting points are quenched in a liquid having a viscosity greater than water or in dry carbon flour.ALSO:Spherical beads for propping well fractures and which pass through sieves having 4.76-0.42 m.m. openings are formed by quenching molten glass particles to a temperature lower than 482 DEG  C.  Soda lime, borosilicate or lead borosilicate glass particles are quenched from a temperature in excess of 982 DEG  C. in a gas, or in a liquid having a viscosity higher than that of water, the temperature of the quenching medium not exceeding 204 DEG  C.
Patent GB-1486620-A (GB)
Title: Aqueous copolymer dispersions
IPC: C08F218/02
Filed: 1974-12-19
Abstract: 1486620 Vinyl haloalkanoate copolymers HOECHST AG 19 Dec 1974 [22 Dec 1973] 54949/74 Heading C3P A copolymer is formed from 50-99À9% by wt. of a vinyl ester of a C 1 -C 18  alkanoic acid, 0À1-15% of a vinyl ester of a C 2 -C 18 -alphahalo-alkanoic acid and optionally up to 49À9% of a further monomer in aqueous dispersion so that the product dispersion contains 30-70% by wt. of polymer. The polymers form crosslinking mixtures with aminoplast resins, polyamines, polyamidoamines or mixtures of formaldehyde with ammonia or an amine. In examples copolymers of vinyl acetate and vinyl chloroacetate and optionally ethylene, dibutyl maleate, vinyl chloride, butyl acrylate or vinyl branched carboxylates are formed and as crosslinking agents are added hexamethylene tetramine, hexamethylene diamine, ammonia/formaldehyde, melamine formaldehyde condensation products, diethylene triamine and a mixture of a polyamidoamine modified with a glycidyl ether and the reaction product of an araliphatic diamine with formaldehyde and phenol. The products are used as coating compositions or adhesives.
Patent GB-1248217-A (GB)
Title: Improvements in or relating to power transmission mechanisms and vehicles including such mechanisms
IPC: B62D61/08
Filed: 1968-11-21
Abstract: 1,248,217. Reverse gear control. INTERNATIONAL HARVESTER CO. 21 Nov., 1968 [28 Nov., 1967], No. 55335/68. Heading F2D. In a planet reverse gear control for a motor vehicle wherein clockwise rotation of a control lever 16 from the forward drive position shown to a neutral position acts through a cam 44, cam follower 46, rod 35, lever 34, shaft 29, forks 32, 33 and clutch release bearing 20 to disengage a forward drive clutch 18 and further clockwise rotation of the lever 16 to a reverse position acts through a rod 50 to engage a band brake 23 and hold the planet carrier 24 of the gear for reverse ratio, the cam 44 is shaped so that during movement of the control lever 16 to its reverse position the clutch linkage is held in its disengaged position without further actuation. The cam surface engaging the follower 46 during movement of the lever 16 from neutral to reverse is the arc of a circle centred on the rotational axes of the cam. A spring 49 maintains the follower 46 in engagement with cam 44 during clutch engagement. As shown an input shaft 19 drives the wheels on opposite sides of the vehicle through separate gear units 17, 18 respectively controlled by levers 15, 16.
Patent GB-1129590-A (GB)
Title: Universal joint
IPC: F16D3/36
Filed: 1965-12-31
Abstract: 1,129,590. Universal joints. BENDIX CORP. 31 Dec., 1965 [8 Jan., 1965], No. 55420/65. Heading F2U. A Hooke's joint comprises balls 30... 36 fixed in yoke arms 14, 18 and engaging seats 44, 46 in a transversely split intermediate member 40, 42 the two parts of which are connected by a nut 50 and bolt 52 which during assembly are tightened to radially preload the arms 14, 18. The seats 44, 46 may be cylindrical (Fig. 8, not shown) or may (Fig. 3, not shown) have a cylindrical portion (a) between spherical portions (e). An oil or grease soaked felt spacer 54 is provided between the two parts 40, 42 of the intermediate member. The balls may be fixed in the yoke arms by pressing oversize balls into bores 22 ... 28 in the arms or the balls may be welded into the arms. The parts 40, 42 of the intermediate member have a square transverse section and the yoke arms may engage the intermediate member under high load operation.
Patent GB-1274956-A (GB)
Title: A process for the preparation of cis-1,4-isoprene polymer
IPC: C08F136/08
Filed: 1969-11-12
Abstract: 1,274,956. Cis-1,4-polyisoprene. JAPANESE GEON CO. Ltd. 12 Nov., 1969 [13 Nov., 1968], No. 55457/69. Heading C3P. Isoprene polymers of high cis-l,4-lipkage content are prepared by polymerizing isoprene dissolved in a solvent comprising a mixture of an inert hydrocarbon and a vinyl halide or a vinyl halide alone, a catalyst composition obtained by mixing a titanium tetrahalide with an organoaluminium compound being added to the isoprene solution so obtained. A Lewis base, such as an ether or amine may be present as third catalyst component. In the examples isoprene is polymerized in solution in n-hexane and vinyl chloride or bromide, utilizing TiCl 4 , triisobutylaluminium and n-butyl ether as catalyst, and the reaction terminated by using methanol containing phenyl.#.naphthylamine.
Patent GB-1374432-A (GB)
Title: Circuit for discriminating between the rotational speed of two rotary members
IPC: B60T8/172
Filed: 1971-12-01
Abstract: 1374432 Pulse discriminating AISIN SEIKI KK 1 Dec 1971 [1 Dec 1970] 55723/71 Heading H3T [Also in Divisions F2 and G4] Circuitry for discriminating between the rotational speed of two members comprises two sensors for generating pulse trains of frequency proportional to the speeds of the members and a  plurality of bi-stables for processing the pulse trains to sense the condition that two or more pulses of one pulse train occur between two successive pulses of the other pulse train. As described in the embodiment of Fig. 1, in which NAND gates 17, 21 and 18, 22 square the input signals from the sensors 11, 12 which may be photo-electric, electromagnetic or micro switches, it is required to direct the high frequency output to conductor 40 and the lower frequency output to conductor 41. If bi-stable 39 initially has its Q output at "1" then NAND gates 26, 30 pass the signal from NAND gates 21 to conductor 40 and gates 28, 29 pass the signal from NAND gate 22 to conductor 41. If the output from sensor 12 is however of the higher frequency and two successive pulses occur on conductor 41 before a pulse occurs on conductor 31, at the trailing edge of the first pulse a bi-stable 36 changes state and at the trailing edge of the second both the bi-stable 36 and a bi-stable 37 change state resulting in a further bi-stable 39 changing state so that (1) the output of NAND gate 22 is switched via gate 27 and gate 30 to conductor 40 and (2) the output of NAND gate 21 is switched to conductor 41. If the output of conductor 31 is at the higher frequency then at least one signal occurs between each signal on conductor 41, and the resulting signal from bi-stable 33 prevents the second bi-stable 37 from being set by the output of bi-stable 36 and hence prevents bi-stable 39 from changing state so that the higher frequency signal is maintained at the required output. In a modification (Fig. 2) the NAND gates 17, 21 and 18, 22 are followed by differentiating circuits comprising capacitors and resistors 51, 52, 53 and 60, 61, 62 and monostable vibrators, resulting in pulses at the outputs of gates 64, 63 at the trailing edges of the outputs from gates 21, 22. In a similar manner to Fig. 1, if two pulses occur on lead 41 before a pulse occurs on lead 40 on reset signal is applied to bi-stables 73, 74 so that the first pulse sets bi-stable 73 and the second results in bi-stable 74 changing state to switch bi-stable 76 and hence switch over the output signals from the sensors. The apparatus may be used in antiskid brake system, and may be extended to measure the relatve speed of four members by repeating the circuitry of Figs. 1 or 2 (Fig. 22, not shown).
Patent GB-1162149-A (GB)
Title: Improvements relating to Electronic Display Systems
IPC: H01J31/20
Filed: 1966-12-14
Abstract: 1,162,149. Cathode-ray tube displays. INTERNATIONAL POLAROID CORP. 14 Dec., 1966 [27 Dec., 1965], No. 56021/66. Heading H4T. [Also in Division H1] In a colour television tube of the type in which the beam velocity is periodically changed to penetrate selectively a screen formed of a plurality of superposed phosphors, e.g. in the form of layers 17, 19, each phosphor emitting light of a different colour, the voltages applied to an electrostatic lens 29 formed by coatings 25, 27 are changed simultaneously with the change in beam velocity so that the images produced at the screen are maintained in register despite the different effects of the deflection field on the beam when of different velocity, the circuitry being as shown. The system is a field-sequential system. The square-wave signal voltage produced by the multi-vibrator 67 controlling the gate 65 is also applied to the high voltage switch 71 controlling the voltages, e.g. 10 kV and 15 kV, applied to the coatings 25 and 27. These voltages are switched between the coatings 25, 27 in synchronism with the applied square-wave voltage. The screen may comprise a two-colour or a three-colour system. The coating 27 may be subdivided into two or more parts to provide electrostatic lenses at different points in the tube.
Patent GB-1429170-A (GB)
Title: Composite information carriers
IPC: G06K19/08
Filed: 1972-12-08
Abstract: 1429170 Data carriers, greetings cards TYNESIDE PRINTERS Ltd 5 March 1974 [8 Dec 1972] 56809/72 Headings B6A and B6X A stationery construction comprises a rectangular metal sheet of a uniform thickness of from 0À012-0À024 in. attached to a card member on one face thereof such that the sheet is bordered along its total perimeter by the projecting card member which is of a uniform thickness of at least ¥ the sheet thickness, the sheet area being not more than 0À45 times the card area. The construction may form a data carrier in which an aluminium or tin plate sheet carrying magnetic, holographic, printed or engraved information or artistic designs is adhered to or held by slits or projections on the card member carrying printed, photographic, embossed or hand. written information. An additional identification tag may be attached to the card. Alternatively the construction may form a greetings card with the sheet carrying decoration and being visible through an aperture in the folded card. The sheet may be protected by a removable skin. The sheet edges may be bevelled so that the remainder of the sheet stands proud of the card.
Patent GB-1215703-A (GB)
Title: Improvements in apparatus for winding warps
IPC: B65H23/195
Filed: 1967-12-15
Abstract: 1,215,703. Automatic control of tension. WESTINGHOUSE ELECTRIC CORP. Dec.15, 1967 [Jan.18, 1967], No.59064/67. Heading G3R. [Also in Division D1] A sheet of. yarns W is fed by a roller DRD (driven at constant speed by a motor MO) to a take-up roller B driven by a motor MOB whose speed is controlled to keep the tension in the yarns constant as the  windings build up in diameter. The tension is sensed by leading the yarns from the roller DRD to a roller 39, then back to a roller 45, before winding on the roller B. The rollers 39, 45 are held apart by springs, so that they move closer together as the tension increases and thereby operate a transducer to give an electrical signal dependent on the tension. Control circuit. The motors MO and MOB are supplied with direct current from 3-phase mains by a regulated Thyristor Power Supply; the motor MOB also has its armature supplied by a 24v Thyristor Boost rectifier delivering power across a resistor R3, and has its field supplied by a Current Regulator responding to the transducer and to a Loss Compensation unit. The boost is controlled by a capacitor I.C. and diode D2 to limit the acceleration when the yarn speed is changed manually by means of the Line Speed Adjustment; it is also controlled by alternative resistors P2, P3, which provide normal running and creep speed used when setting up the machine. The loss compensation varies as the cube of the speed to account for air resistance to rotation of the armature.
Patent GB-1317286-A (GB)
Title: Electrophotography
IPC: G03G21/16
Filed: 1970-03-20
Abstract: 1317286 Electro-photographic copying drum CANON K K 20 March 1970 [21 March 1969 and 16 April 1969] Divided out of 1317282 57162/72 Heading G2H The description is the same as that of Specification 1317282 but the claims relate to an electro-photographic copying drum comprising a disc fixed on a shaft, and a cylinder removably mounted on the disc.
Patent GB-1209779-A (GB)
Title: Process for evaporating saline water
IPC: C02F5/08
Filed: 1967-11-20
Abstract: 1,209,779. Evaporation of saline water or sewage effluent. W. R. GRACE & CO. 20 Nov., 1967 [23 Nov., 1966], No. 52766/67. Heading B1B. [Also in Division C7] To inhibit scaling, when saline water, such as sea (water, or sewage effluent, is heated in an evaporation plant, from 0.1 to 20 p.p. of a polymer of methacrylic acid or an alkali metal salt thereof, having an average molecular weight of 1000 to 500,000 and calculated as Na polymethacrylate, is added to the water. The inhibitor may be added in a vaporization zone, in a pretreating zone, or may be incorporated in feed water, suitably being added as an aqueous solution containing at least 1% by weight of inhibitor and optionally anti- 'foam agents, corrosion inhibitors and oxygen scavengers. Evaporation may be carried out at 85F to 350F, in flash evaporators, or in film evaporators (falling-, rising- or wipedfilm), or in basket-type evaporators.
Patent GB-1195304-A (GB)
Title: Improvements in or relating to Animal Food Dispensing Apparatus
Inventor: TARTAR ADOLPHE
IPC: A01K9/00
Filed: 1967-12-18
Abstract: 1,195,304. Animal feeding appliances. A. TARTAR. 18 Dec., 1967 [16 Dec., 1966], No. 57410/67. Heading A1M. [Also in Divisions B1 and B8]  Animal feeding apparatus comprises a mixing vessel 5 connected to at least two teats 3, 6 and receiving powdered food from a hopper 13 via conveyer 14 and hot water from a supply 11 via valve 17. Two groups of animals A and B requiring different foodstuffs are allowed to feed from their respective teats 3, 6 when alternately operated shutters 24, 25 are opened. The amount of food reaching the mixing vessel 5 is controlled by a vertically movable trap door 18, the amount varying for the two groups. In operation, timing means 23 opens shutter 24 via cam 29 and electromagnet 26, and when animal 1 sucks teat 3 the suction in pipe 4 actuates a programmer 16 which delivers a predetermined quantity of hot water and powdered food to the mixing vessel 5, the trap door 18 being in its lowermost position defining a small outlet aperture for the powdered food. After a pre-determined period, cam 29 causes electromagnet 26 to close shutter 24, electromagnet 27 to open shutter 25, and electromagnet 28 to raise trap-door 18. Thus suction by animal 2 actuates programmer 16 to deliver the hot-water and powdered food to the mixing vessel, the food mixture being richer as determined by the position of trap-door 18. In a modification, Figs. 2 and 3 (not shown), the conveyer consists of a motor driven Archimedean screw (34) mounted horizontally in the lower part of the hopper 13, the output end of the screw revolving within a tubular duct (36) overlying the mixing vessel 5. A paddle-wheel (37) is rotated as the ends of its spokes (37a) mesh with the rotating screw (34). Reference has been directed by the Comptroller to Specification 1,125,829.