baber/WOPTO huggingface dataset:
Patent GB-1403387-A (GB)
Title: Method of producing a mixture of soluble and insoluble copolymers of polyhydric alcohol methacrylates and acrylates
IPC: C08F20/26
Filed: 1972-10-11
Abstract: 1403387 Mixed solubility (meth)acrylate polymers CESKOSLOVENSKA AKADEMIE VED 11 Oct 1972 [14 Oct 1971] 46788/72 Heading C3P A mixture of soluble and insoluble crosslinked hydrophilic (meth)acrylate polymers is prepared by dissolving in an inert solvent (a) a polyhydric alcohol monomethacrylate and/or monoacrylate in an amount not more than 34% by weight of the total polymerization solution and (b) from 0À005 to 0À2% by volume, based on the total polymerization solution, of a corresponding poly-(meth)acrylate; effecting free radical precipitation polymerization of the solution obtained; and separating out, in the form of discrete particles, the resultant mixture of soluble and insoluble cross-linked polymer products, the inert solvent being such that the polymer products are neither substantially swelled nor substantially dissolved thereby. (The terms "soluble" and "insoluble" are defined as meaning that a polymer is soluble or insoluble, respectively, in at least methanol.) The polymerization solution may also include other comonomers but the use of 5-95%, based on the total weight of monomers employed, of nbutyl acrylate or methacrylate is disclaimed. Suitable solvents for the process include aromatic hydrocarboris optionally partially hydrogenated, halogenated hydrocarbons, carboxylic acid esters of aliphatic alcohols, (cyclo) ethers and (cyclo)-ketones; the solvent may further include a proportion of an aliphatic or cycloaliphatic hydrocarbon. Polymerization is initiated with a conventional compound such as benzoyl peroxide, t-butyl peroctoate, diisopropyl percarbonate, cumene hydroperoxide or azobisisobutyronitrile. Polymerization may be effected continuously or batchwise, preferably with the monomers being added at a rate dependent upon the precipitation rate of the polymer. The polymer products are useful as reinforcing agents for hydrophilic polymer gels, one particular application being in soft hydrophilic gel layers for hard acrylic dentures.
Patent GB-1325737-A (GB)
Title: Casting operations
IPC: B29B13/00
Filed: 1970-10-01
Abstract: 1325737 Cores; casting processes TOYOTA JIDOSHA KOGYO KK 1 Oct 1970 [2 Oct 1969] 46833/70 Heading B3F [Also in Divisions B5 and C3] Metal is cast in a mould having a watersoluble core comprising a solid body made by casting a melt comprising an alkali metal halide (e.g. NaCI) and a metallic and/or siliceous oxide (e.g. Al 2 O 3 , MgO, TiO 2 , SiO 2 ). Sand containing metallic or siliceous oxides may also be used. A melt containing 5-10% by weight alumina provides a high mechanical strength. To prevent shrinkage cracks in the core a chloride or a fluoride having a melting point higher than 600‹ C. is added. The chloride may be KCl, LiCl, CaCl 2  or MgCl 2  whilst the fluoride may be NaF, LiF, CaF 2  or MgF 2 . Further ingredients are inorganic foaming agents such as zirconium hydride, titanium hydride, calcium carbonate or calcium sulphate and graphite as a shrinkage inhibitor. A metalic powder, e.g. iron dust or a ferrosilicon, may also be added to the melt to assist in the magnetic treatment of the products at the time of casting and to provide good thermal conductivity characteristics.
Patent GB-1087476-A (GB)
Title: A method of recovering a soluble salt from an underground deposit
IPC: E21B43/28
Filed: 1965-11-09
Abstract: 1,087,476. Solution mining. ESSO RESEARCH & ENGINEERING CO. Nov. 9, 1965 [Nov. 12, 1964], No. 47485/65. Heading E1F. A borehole is drilled to the lowest boundary level of a subterranean mineral deposit to be mined. Separate fluid communication is established between the surface and at least four separate levels within the deposit through the borehole. Solvent is injected into the deposit at the second lowest level and solution formed removed at the lowest level. A blanket layer of solvent-immiscible fluid is established from the top level to the next lowest level, and solvent is continued to be injected at the original level whilst the blanket is raised in stages whilst solution is recovered from the lowest level, and then increasing the thickness of the blanket layer so that the solvent attacks the side walls of the cavity formed up to this stage to cause subsequent widening of the cavity.
Patent GB-1483299-A (GB)
Title: Breathing apparatus
IPC: A62B7/00
Filed: 1974-11-04
Abstract: 1483299 Respiratory appliances WESTINGHOUSE ELECTRIC CORP 4 Nov 1974 [6 Nov 1973[ 47572/74 Heading A5T Breathing apparatus includes means for capturing an automatically variable portion of the user's exhaled breath and for releasing the captured breath for rebreathing, said means comprising a gas collection for receiving only an initial portion of each exhalation, sensing means for automatically determining the magnitude of a parameter of the gas breathed by the user, and automatic control means connected to said sensing means for automatically varying said initial portion of exhaled breath in accordance with variations in the sensed parameter. The parameter sensed may be inspired volume, or carbon dioxide content of exhaled breath. The gas collector 50 may comprise an outer wall 51 and an internal wall formed by a bellows 53 biassed to its extended position by a spring 54. The downward stroke of the bellows is limited by a sensor actuator 58 also comprising a bellows. Actuator 58 communicates through an aperture 61 controlled by a spring-loaded button 63, with a passage 60 communicating with a sensor 67 comprising chambers 69-71 defined by interconnected diaphragms 73, 74. A plate 80 of diaphragm 73 is spring-loaded against the opening of passage 60. When inhalation commences gas in collector 50 passes to an oronasal mask 42 positioned in a head cover 40 through a one-way valve 100. As inhalation continues bellows 53 expands to a position such that a disk 102 at the top thereof actuates a lever 104 to open valve 46 for supply of fresh breathing gas to the mask 42 by way of a venturi passage 48 which communicates with the sensor through orifice 82. The resultant pressure drop (P 4 -P 1 ) across orifice 82 results in gas flow from actuator 58 via passage 60 at a rate substantially equal to the flow rate of breathing gas through the venturi so that the volume change in actuator 58 is indicative of the amount of breathing gas inhaled. When exhalation commences the exhaled gas passes initially through a one-way valve 120 to collector 50 until the downward stroke of bellows 53 is stopped by disk 102 seating button 63 against aperture 61 so that no more exhaled gas is accepted by collector 50, the remaining exhaled gas flowing to atmosphere through relief valve 95. When the next inhalation commences a pressure drop occurs in oro-nasal mask 42 so that pressure therein becomes less than that in head cover 40 and therefore that in chamber 70. Diaphragms 73, 74 therefore move against the action of spring 78 to allow air to flow into actuator 58 to reset it to its maximum length. In a modification collector 50 comprises two compartments one of which has a fixed maximum volume and the other of which has a variable maximum volume and is connected to the sensor actuator. The apparatus may be used in diving, space work, fire-fighting or other rescue work.
Patent GB-1135549-A (GB)
Title: Improvements in or relating to electric circuit arrangements employing controllable semiconductor rectifiers
IPC: H02M7/515
Filed: 1967-10-19
Abstract: 1,135,549. Semi-conductor switching circuits. INTERNATIONAL STANDARD ELECTRIC CORP. 19 Oct., 1967 [21 Oct., 1966], No. 47648/67. Heading H3T. [Also in Division H2]. In a circuit in which controlled rectifiers with a saturable inductance load are triggered by a square wave signal, the first triggering pulse is made narrower than the subsequent ones. Input square waves are fed via amplifier 4, 5 and gate circuit 11 to windings 7, 8 and 9, 10 which apply the control signals to two thyristors (not shown). When the circuit is first switched on, thyristor 11 is not conductive and no signal is fed to windings 7, 8 and 9, 10. After a time delay determined by CR 12, 13, thyristor 11 fires to connect the input to the output. Resistor 13 is adjusted such that firing occurs about half way through the first input pulse, so that the initial pulse is half the width of the subsequent ones.
Patent GB-1492948-A (GB)
Title: Manufacture of metal tube
IPC: B21B21/00
Filed: 1974-11-05
Abstract: 1492948 Rolling tubes MANNESMANN AG 5 Nov 1974 [24 Jan 1974] 47727/74 Heading B3M A roll, Fig. 1, for a pilger rolling mill has a working portion b whose cross-section progressively reduces to a minimum at 8, without a final smoothing portion. The roll, in use, Fig. 2, is oscillated between extreme positions ET and AT, and has a portion a which is used to allow for rotatably and axially indexing a workpiece tube. A mill, Fig. 7, embodying two such rolls has a drawing die 22 located downstream of the rolls, the die being rotated synchronously with a feed-out chuck 21. The roll may have a modified profile (Fig. 4, not shown) which enables it to rotate through more than 360 degrees each rolling step.
Patent GB-1412743-A (GB)
Title: Fastening devices
IPC: E05B35/00
Filed: 1972-10-17
Abstract: 1412743 Fastenings D H CHAPMAN 24 Sept 1973 [17 Oct 1972] 47748/72 Heading E2A A fastening device comprises a housing member 1, at least one pair of bores 2, 3 in the housing member a plunger member 4 or 6 in a respective bore of the or each pair of bores, a member 8 interconnecting the plunger members 4, 6 of the or each respective pair which are movable synchronously in opposite directions, the or each pair of plunger members comprising the first plunger member 4 movable between a projecting and a withdrawn position in which it is retracted in the housing member and the second plunger member 6 movable between first and second positions within its respective bore and operable to displace the plunger member 4 from its fastening to its releasing position. The plunger member 4 is projected into a recess 10 in a sticker plate 9. A further plunger member 5, 7 is spring urged upwardly in each bore. Manual pressure or pressure of a key on the plunger member 7 withdraws the plunger member 4, similar pressure applied to the plunger member 5 projects the member 4. The housing may contain a plurality of pairs of bores and each pair of plungers may be differently spaced for actuating manually or by a key having projections of corresponding lengths. The plunger member 4 may lock a vehicle door bolt. As shown in Fig. 6 the plunger members 5, 7 are omitted. The device may be made of plastics or wood.
Patent GB-998666-A (GB)
Title: Core box vent
IPC: B22C7/06
Filed: 1963-12-03
Abstract: 998,666. Core-boxes; making core-box vents. HILLSDALE TOOL & MANUFACTURING CO. Dec. 3, 1963 [Jan. 3, 1963], No. 47790/63. Headings B3A and B3F. A core-box vent has an annular body portion 32 and a head portion 28 with an annular venting gap 34 therebetween. The vent is formed from a sheet material blank, Fig. 4, and the head portion is located after bending with respect to the body portion by a tongue or tongues 44. In a modification, Figs. 8, 9, the tongues are omitted, the vent being more suitable for lower core-box filling pressures.
Patent GB-1372394-A (GB)
Title: Time division multiplex transmission system
IPC: G08C15/12
Filed: 1971-10-14
Abstract: 1372394 Selective signalling NISSAN MOTOR CO Ltd 14 Oct 1971 [14 Nov 1970] 47895/71 Heading G4H In a time-division multiplex system, pulses in respective channels are converted into pulses at respective times each of which is converted into a binary-coded signal which is transmitted, a receiver performing a reverse conversion, the conversions to binary-coded using rectifiers and at least one inverter, the resulting bits being progressively delayed by delay circuits. In the transmitter of Fig. 2A, actuation of a switch 30, 32 or 34 in channel A, B or C produces a single pulse from a generator 36, 38 or 40, which gates a clock pulse from 42 at a time depending on the channel (due to delays 44, 46) to a respective group of diodes 60 and inverters 68, 70 to produce a coded group of pulses representing the channel, the group being serialized by delays 62, 64, 66 of different amounts and OR gate 72. The serialized coded group for a given channel falls entirely within a time duration equal to the delay of 44 or 46, so the coded groups for different channels are produced and transmitted without overlap. In the receiver of Fig. 2B, the reverse conversion is performed using inverters 88, 90, diodes 80, delays 82, 84, 86 and AND gates 92, 94, 96 to recognize the coded groups. Control of devices in vehicles &c. is mentioned.
Patent GB-1437529-A (GB)
Title: Apparatus for handling elongate elements
IPC: B65G47/52
Filed: 1973-10-16
Abstract: 1437529 Rolling mills MORGAN CONSTRUCTION CO 16 Oct 1973 [18 Oct 1972] 48185/73 Heading B3M [Also in Division B8] Hot rolled bars from a cooling bed 12 in a bar mill are accumulated on a rack device 26 from which they are transferred in batches, by a transfer assembly 60, to either of run-off tables 46, 48 each of which feeds a shear arrangement (not shown). The transfer assembly 60 consists of frame members 64 supported on rollers 66 for reciprocable motion transversely of the run-off tables 46, 48, by rack and pinion means 68, 70. On tubular frame members 62 of the assembly 60 are pivotally mounted members 90 for lifting and lowering the batches. As shown, the run-off tables comprise driven rollers 50 having bar-guiding grooves 52, the tables being independently operable to convey the bars. Alternatively the rollers may include magnetic means in place of the grooves. In Fig. 5a, by raising the members 90 to position 90a, a batch of bars is lifted from stationary supports 28 of the device 26 and, if the batch is to be deposited on run-off table 48, the transfer assembly 60 is retracted to the Fig. 2 position. The bars having been deposited, Fig. 5b (not shown) the assembly 60 is further retracted to clear the table 48 and, after the members 90 have been raised, the assembly is returned to the Fig. 5a position to pick up a further batch of bars now ready on the device 26. This batch is deposited on the other table 46. In place of the device 26 there may be an intermittently operating chain conveyer or an inclined ramp.
Patent GB-1022651-A (GB)
Title: Processes for dyeing and printing fibrous textile material with reactive dyestuffs
IPC: D06P3/66
Filed: 1962-12-20
Abstract: Reactive dyestuffs present on textile materials are fixed thereon by exposing the said materials to the action of a high-frequency electric field in such a way that its surface area is small in relation to its volume.  The textile material is preferably at least 10 cm.thick in such forms as rolled up or zig-zag folded fabrics, wound packages or compact piles or yarns or sliver possibly wrapped in aluminium foil.  The electric field may be generated in known ways and may be a capacitive field or one produced by introducing high-frequency oscillations into an electrically sealed chamber which, advantageously, has metal walls of good conductivity and thus reflecting properties.  The high-frequency oscillations may be generated by a magnetron and introduced into the chamber by means of rectangular or cylindrical hollow conductors or a coaxial conductor. In the examples the latter method is used, the chamber being a metal oven and the magnetron providing high-frequency energy of frequency 2400 mc. (wavelength = 12.5 cm.).  The reactive dyestuffs suitable for the present process are preferably water-soluble and contain at least one reactive group (many specified) and may be from the oxazine, triphenylmethane, xanthene, nitro, acridone, azo, anthraquinone and phthalocyanine series; reactive disperse and vat dyes may also be used especially vat dyes containing water-solubilising groups in which case the presence of a reducing agent is normally of advantage.  The dyestuffs are applied in the usual way, e.g. by p  padding or printing, and, when the textile materials are of cellulose, together with an acid-binding agent. Agents which assist the fixation, e.g. 1 : 4-diazo-bicyclo-(2 : 2 : 2)-octane and hydrazines that contain at least one 3 degrees nitrogen, may also be included.  The dye-impregnated materials may be treated with the high-frequency electric field in either the wet or the dry state and the time of treatment in the Examples is 2-5 minutes.  Fabrics of cotton, linen and viscose staple and sliver of viscose staple are dyed in the examples.
Patent GB-1240696-A (GB)
Title: Device for cutting the neck artery of poultry
Inventor: BRUGMAN BRAM JAN MARTHA GERRIT
IPC: A22B3/08
Filed: 1968-10-11
Abstract: 1,240,696. Slaughtering poultry. STORK AMSTERDAM N.V. 11 Oct., 1968, No. 48334/68. Heading A1M. A device for cutting the arteries in the necks of poultry 2 moving on a conveyer track 1 comprises a guide channel defined by rails 13, 14, and an inclined bottom 17, and a horizontally rotating cutting disc 10 for partially severing the neck as the bird 2 is drawn through the channel. A spring- loaded horizontal lever 19 pivoted across the top of the channel acts to retard the passage of the head of the bird 2 so that the sudden release causes the neck to swing against the cutting disc 10. A rack and pinion arrangement 11, 12 allows adjustment of the height of the device, and a handwheel 23 allows adjustment of the depth of cut.
Patent GB-1171304-A (GB)
Title: Polymeric Compounds for Antistatic Treatment of Textiles
Inventor: TESORO GIULIANA CAVAGLIERI
IPC: C08G75/045
Filed: 1966-11-01
Abstract: 1,171,304. Nitrogen-containing polyether derivatives. J. P. STEVENS & CO. Inc. 1 Nov., 1966, No. 48915/66. Heading C3R. [Also in Division D1] Polyether derivatives containing nitrogen are prepared by condensing (1) a polyoxyalkylene compound containing at least three - (-C n H 2n O-)- groups, where n = 2, 3 or 4, and at least 2 terminal groups OH, SH or NRH, where R is hydrogen or lower alkyl, with (2) a polyfunctional amide containing at least two groups per molecule of the formula >NCOZ linked by aliphatic or cycloaliphatic hydrocarbon groups where Z is -CH(R<SP>1</SP>)CH 2 OR<SP>1</SP>, or CH(R<SP>1</SP>)CH 2 Q, wherein R<SP>1</SP> is a hydrogen or lower alkyl radical and Q is a polar residue of a weak nucleophile. Examples of (1) are polyethylene glycol, triols obtained by reacting alkylene oxides with glycerol and trimethylol propane, tetrols obtained by reacting polyoxyalkylene dihalides with alkanolamines, polyalkyl ether diamines, e.g. N,N<SP>1</SP>-tetrakis (betahydroxyethyl) polyglycol diamine and polyalkyl ether dithiols. Suitable polyfunctional amides include N,N<SP>1</SP>-hexamethylene bis-beta methoxy propionamide and 1,3,5 - tris - (beta - methoxy proprionyl) - s - perhydrotriazine. Suitable polar residues of weak nucleophiles include sulphate, thiosulphate, acetate, formate, propionate, pyridinium and benzyl dimethyl ammonium. The reaction takes place under alkaline conditions using, for example, alkali metal hydroxides, alkoxides, carbonates, bicarbonates, phosphates, silicates and acetates as well as quaternary ammonium hydroxides and tertiary amines. The condensation may be effected in situ on textiles to which they impart anti-static properties and the products may be linear having the recurring unit or cross-linked. By employing mixtures of bifunctional and trifunctional reactants threedimensional networks can be achieved, i.e. by using bifunctional reactants as previously stated in conjunction with a trifunctional or polyfunctional reactant such as pentaerythritol, glycerol or triethanolamine.
Patent GB-1235957-A (GB)
Title: Alkaloid derivative
IPC: B42D17/00
Filed: 1969-10-07
Abstract: 1,235,957. Alkaloid derivatives. EISAI K.K. 7 Oct., 1969 [18 Feb., 1969], No. 49126/69. Heading C2C. Novel compounds I in which R is 1-4 C alkyl or alkenyl and X is Br are prepared by reaction of the alkaloid with the appropriate p-alkoxy or p-alkenyloxy benzyl halide. Pharmaceutical compositions comprise a compound I together with a suitable carrier and are administered orally or parenterally. Compounds I have strong parasympathetic blocking activity.
Patent GB-1088505-A (GB)
Title: Improvements in respirators
IPC: B05B17/06
Filed: 1964-12-04
Abstract: 1,088,505. Respiratory apparatus. C-G.D. ENGSTROM and P. HERZOG. Dec. 4, 1964 [Feb. 11, 1964], No. 49486/64. Addition to 1,035,049. Heading A5T. The respirator for artificial breathing and for narcosis as described and claimed in Specification 1,035,049 is improved or modified in that it comprises a mechanical filter, an adsorption filter and/or an electrostatic filter in the exhalation duct, and/or in that the nebuliser vibrator comprises a supersonic vibrator plate oscillated by a vibrator device, such vibrator plate being made of or having on its top surface a layer of non-corrosive material (e.g. glass, porcelain or a plastics material). A liquid or solid (e.g. adhesive) transmission medium may be placed between the vibrator plate and the vibrator device. The mechanical or adsorption filters may comprise cotton, glass wool, filter paper, silica gel, activated alumina, activated bauxite, activated kieselguhr, activated carbon, calcium chloride or phosphorus pentoxide. The adsorption filter may be suitable for the adsorption of polar anaesthetics. In Fig. 2. the apparatus comprises a nebuliser 61 and electrostatic filters The electrostatic filters may be replaced by mechanical filters. The electrostatic filters comprise a brush type discharge electrode 222 connected to a source of current and surrounded by a collecting electrode tube 210. The aparatus comprises 3-way valves 272, 286 and 292 such that one or more of the filters may be by-passed.
Patent GB-1362260-A (GB)
Title: Thermoelectric devices and their manufacture
IPC: H01L35/34
Filed: 1971-10-25
Abstract: 1362260 Vapour deposition of semi-conductor materials SIEMENS A G 25 Oct 1971 [23 Nov 1970] 49522/71 Heading C7F [Also in Division H1] In a method of producing a series connected set of thermocouple limbs, compound semiconductor material is deposited on an insulating support by flash evaporation and subsequently heat treated to crystallize it. The limbs of the thermocouples may be of the same basic material but oppositely doped and may be joined by bridges evaporated-on or by overlapping lateral extensions of the limbs. The support may be of a polyimide which can be coiled or stacked to provide a thermoelectric unit. The end faces of the coils or the side faces of the stacks may be sealed with casting resin on which heat exchangers may be mounted. A layer of metal may be applied to the casting resin to improve the thermal contact. Limbs may be provided on both faces of the support and insulated by a layer of material such as silicon oxide applied by spraying or evaporation. The hot junctions of a unit may be heated by a Pu 238 radio-active source. A plurality of strips may be simultaneously produced by arranging the support strips on a drum 22 with each strip encircling the circumference and lying adjacent to the next strip in an axial direction. Alternatively the strips may be helically wound on to the drum. The strips are covered with a mask having patterns of slots and the mask and strips are held in position by circumferential clamping members, means being provided for accurate alignment of the various components. One set of limbs is then flash evaporated from a crucible 6, material passing through an aperture in a shield 20, on to each strip while rotating the drum continuously or intermittently, the mask is repositioned to expose the areas for the second sets of limbs which are also deposited by flash evaporation. The amorphous deposits of material are then crystallized by heating. The supports are initially cleaned ultrasonically and then subjected to a glow discharge in argon which may be repeated between the deposition steps. The semi-conductor material may be ZnSb, P type limbs being doped with Sn and Ag.