baber/WOPTO huggingface dataset:
Patent GB-1527039-A (GB)
Title: Process for preparing oxidatively stable polyurethane foa
IPC: C08G18/00
Filed: 1976-12-06
Abstract: 1527039 Polyurethane foams M & T CHEMICALS Inc 6 Dec 1976 [18 Dec 1975] 50673/76 Heading C3R A flexible cellular polyurethane having improved oxidative stability and reduced shrinkage is prepared by a process which comprises reacting a polyol containing at least two active hydrogen atoms per molecule, as determined by the Zerewitinoff method, with a polyfunctional isocyanate in the presence of a blowing agent and a latent gel catalyst having a formula selected from R a SnX 4-a .bNR<SP>1</SP> 3 , wherein R and R<SP>1</SP> are selected from C 1 -C 20 - alkyl radicals, cycloalkyl and phenyl radicals, X is Cl, Br, I, cyanate or thiocyanate, and a and b are each 1 or 2, and optionally a blowing catalyst, e.g. a tertiary amine. The blowing agent may be water alone or together with a volatile fluorinated hydrocarbon. Suitable polyols have an average molecular weight of from 500 to 5000, such as OH-containing polyesters, polyethers and polyamides, alkylene glycols, polyisocyanate-modified alkylene glycols, polymercaptans, polyamines and polylactones. The preferred polyisocyanate is an 80/20 mixture of 2,4- and 2,6-toluene diisocyanates. The foam may be prepared by the one-shot or prepolymer methods. In the examples cellular polyurethanes are prepared by the one-shot method from the following formulation: a trifunctional glycerol based polypropylene glycol (M.Wt. 3000), water, N-ethyl morpholine, triethylene diamine, a poly(oxyethylene-oxypropylene)siloxane, an 80/20 mixture of 2,4- and 2,6-toluene diisocyanate and any one of the following latent gel catalysts: a 1 : 1 complex of dibutyltin dichloride with triphenylphosphine oxide, triphenylphosphine or dipyridyl, or of dibutyltin dithiocyanate with triphenylphosphine oxide.
Patent GB-1119516-A (GB)
Title: Wear and abrasion resistant alloy
IPC: C22C38/36
Filed: 1965-12-01
Abstract: A wear-and abrasion-resistant alloy has a composition within the broad range:- .C.2 - 5 % .Cr.5 - 30% .Mo.1 - 10% .V.0.5 - 12% .Ni up to.1% .Mn up to.1% .Si up to.1% .Fe and incidental elements,. the remainder. The Cr, Mo, V and C are balanced so that a 2 ins. diameter rod of the alloy achieves a martensitic structure on air-cooling from an austentic condition. For instance, they may be balanced to satisfy the following equations:- <FORM:1119516/C6-C7/1>
Patent GB-1065040-A (GB)
Title: Colouring thermoplastics
Inventor: GRASER FRITZ
IPC: C08K5/18
Filed: 1965-12-02
Abstract: A process for mass dyeing thermoplastics comprises using anthraquinone derivatives which contain in the 1-position of the anthraquinone nucleus the radical -NH-X-Ar in which X denotes a linear or branched bridging group containing at least two carbon atoms and Ar denotes an aromatic radical which may bear substituents other than sulphonic acid groups or sulphonamide groups, and which may bear in the 4-position of the anthraquinone nucleus a hydroxy, alkoxy, amino or alkylamino group as a substituent.  The anthraquinone derivative used may also contain the said radical -NH-X-Ar in the 4-position of the anthraquinone nucleus.  The anthraquinone derivative may also contain the said radical -NH-X-Ar in the 5-position of the anthraquinone nucleus. Preferably, the anthraquinone derivative used has the general formula <FORM:1065040/C3/1> in which X denotes a linear or branched bridging group having at least two carbon atoms, Ar denotes a phenyl, naphthyl or diphenyl radical which may contain halogen atoms, alkyl groups, alkoxy groups, aryloxy groups, acyl groups, or hydroxy groups which is free from sulphonic acid groups or sulphonamide groups, R1 denotes a hydrogen atom, a hydroxy group, an amino group, an alkoxy group, an alkyl amino group, or an aralkylamino group having the said formula NH-X-Ar, and R2 denotes a hydrogen atom or an aralkylamino group having the formula -NH-X-Ar, but in which both radicals R1 and R2 do not denote the radical -NH-X-Ar at the same time. Alternatively, the anthraquinone derivative may have the general formula <FORM:1065040/C3/2> in which Y denotes one of the radicals <FORM:1065040/C3/3> <FORM:1065040/C3/4> <FORM:1065040/C3/5> R3 denotes a hydrogen atom, the above radical Y, a methylamino group or a hydroxyl group but only a hydrogen atom when R4 denotes the radical Y, and R4 denotes a hydrogen atom or the said radical Y. Thermoplastic materials which may be mass dyed with the said compounds include polyamides, polyvinyl chloride and polystyrene emulsion, suspension or block polymer and copolymers of styrene with butadiene and acrylonitrile or acrylic esters.
Patent GB-1201048-A (GB)
Title: Shearing line for heavy plates
Inventor: GREIS KARL
IPC: B23D31/04
Filed: 1967-11-10
Abstract: 1,201,048. Shearing. MOELLER & NEUMANN G.m.b.H. 10 Nov., 1967, No. 51306/67. Heading B3W. A shearing line for heavy plates includes two opposed edge trimming shears 1, 2 and shears 3 for lengthwise cutting comprising a curved cutter which executes a rocking movement and a straight cutter. Further shears 30 for transversely cutting the plates follow a lengthmeasuring device 32-37 associated with driving roller 31. After a predetermined number of revolutions of the roller 31 an actuating device 35 stops all the drive rollers in the shearing line and the shears 30 effects a cut. One or both edge trimmers is/are displacable inwardly to accommodate different plate widths and the shears 3 are also adjustable transversely of the feed direction when the shears 3 follow closely on the edge trimmers. If the edge trimmers 1, 2 and shears 3 are spaced apart at least by the length of a plate to be cut, driven guide bars (15), (16), Fig. 1 (not shown), are provided to shift the plates laterally before they are fed to the shears 3. The plate support at the shears is wide enough to allow the widest plates to be cut on or off the centre line. The shears 3 comprises a lower stationary cutter (514), Fig. 4 (not shown), and an upper curved cutter (413) actuated by a double crank arrangement (72)-(76) to rock as it is reciprocated. The cutter (413) is guided by stops of cycloid shape, one fixed (120) and one displaceable (123) and the stroke of the shear is adjusted by simultaneous rotation of clamp nuts (79), (Fig. 5, not shown) one on each of four vertical columns 78 connecting the upper and lower shear frames 76, 77.
Patent GB-1395496-A (GB)
Title: Voice frequency transmission circuit
IPC: H04M3/56
Filed: 1971-06-30
Abstract: 1395496 Directional switching POST OFFICE 28 June 1972 [30 June 1971] 51437/74 Divided out of 1395495 Heading H4R A transmission circuit produces a signal representing the envelope of a voice frequency signal applied to the input LT2 and combines the envelope signal with the voice frequency signal so that the combined signal is unidirectional (i.e. unilateralized). The envelope signal is produced by a rectifying means including an inverting amplifier A1 receiving the voice frequency signal through a resistor R1 and having an output which is coupled to the amplifier through two feedback circuits, one including a rectifier D1 in series with a resistor R7 and the second including a resistor R6 and a rectifier D2. The output of the rectifying means is a substantially undistorted representation of the envelope of the voice frequency signal. The transmission circuit is applied to a telephone conference amplifier circuit (see Specification 1,395,495).
Patent GB-1359137-A (GB)
Title: Developing machine
IPC: G03D3/06
Filed: 1970-10-30
Abstract: 1359137 Feeding sheets AGFA-GEVAERT 25 Oct 1971 [30 Oct 1970] 51778/70 Heading B8R [Also in Division G2] Photographic films to be processed are sensed by opposed rollers 10, 11, having electrically conductive portions which are opposed to one another, with an electrical control circuit responsive to separation of the rollers. The control circuit may be actuated by an interruption of contact between the opposed portions of the rollers, or by a change in capacitance between them. Each roller may be divided into opposed mutually insulated sections 47, each with its own electrical brush contacts 49, so that the change in capacitance brought about by the presence of film, as opposed to air, is separately detectable for each opposed pair of sections, and a count of the number of pairs of sections between which film is present gives a measure of the width of the film in question. Alternatively one sectional roller may be used with an uninterrupted conductive roller to give the same result.
Patent GB-1140261-A (GB)
Title: Improvements in and relating to structural frames such as window frames
Inventor: BERTHELSEN VIGGO
IPC: B29C48/08
Filed: 1964-12-21
Abstract: 1,140,261. Moulding frame sections; seaming; sawing. E. BERTHELSEN. 21 Dec., 1965 [21 Dec., 1964], No. 51854/64. Headings B5A, B5K and B5L. [Also in Divisions B3 and E1] In the production of window frames, a perforated steel or aluminium alloy strip is cold rolled to the desired configuration, coated with P.V.C. by passage through a coating head 42 whereby the plastics coating is interconnected through the perforations, passed through a tempering station 44 wherein cold forming means, e.g. rollers or polishing surfaces, perform further profile shaping and then cut to desired lengths by a rotary saw 46 or cutting disc reciprocating transversely to and along the direction of strip movement, and which saw may alternatively comprise a chain saw mitre cutting device which may otherwise be provided separately of the machine assembly. The mitre cutting may be effected at a combined drilling and cutting station (Fig. 6) which has an electromagnetic location device (50). The saws are automatically activated by feelers on the stock lengths. Each mitre cut section is then pressed in heated apparatus comprising an upper movable die 80, 82, a lower die having stationary parts 76, 78 and 68 and members 70, 72 and 74 which are downwardly movable under the pressure of the upper die, a side member 86, and end members (60), Fig. 7, for defining the mitre, whereby the plastics material is caused to flow to define a mitred welding zone extending beyond the cut edges of the metal strip. A decorative plastics surface strip may also be applied in this operation. The frame is assembled in a press assembly (Figs. 10, 11) comprising at each corner a cooled pressure mitre clamping assembly provided with a heated and cooled die whereby the mitres are welded. Metal reinforcements may be incorporated into the frame corners at this stage or supplementary plastics may be injection moulded thereon.
Patent GB-1447866-A (GB)
Title: Charge coupled devices and methods of fabricating them
IPC: H01L21/8234
Filed: 1972-11-10
Abstract: 1447866 Coating semi-conductors by evaporation or sputtering NATIONAL RESEARCH DEVELOPMENT CORP 31 Oct 1973 [10 Nov 1972] 51950/72 Heading C7F [Also in Division H1] Electrodes for a CCD are produced by depositing conductive material 16 on to a surface of the device having projections 13, the angle of incidence of the deposited material resulting in shadows 15 being cast by the projections to form spaces between the electrodes. The surface and projections may be, as shown, Fig. 3, of insulating material e.g. silicon dioxide or silicon nitride on a Si substrate 10, the projections being produced by etching. Alternatively, the projections may be etched in a sheet of conductive material. In a modification, the projections are formed by etching the semi-conductor body, the electrodes making Schottky contact thereto. The semi-conductor may alternatively be germanium or gallium arsenide; the conductive material may be of evaporated aluminium, gold Nichrome (RTM), or of sputtered molybdenum, or of polycrystalline silicon. The CCD may be of the two or three electrode group type. The angle of incidence of the beam 14 of material may be 10 to 80 degrees, e.g. 45 degrees; the collimation of the beam may be improved by inserting one or more apertures between evaporation source and surface or, where sputtering is employed, the use of electric and/or magnetic fields.
Patent GB-1128974-A (GB)
Title: A process for the treatment of a substance to alter the physical and/or chemical properties of its surface
IPC: B01J2/00
Filed: 1965-12-08
Abstract: 1,128,974. Surface-modified acids and bases; surface-modified ascorbic acid. V. LASOMARTINEZ. 8 Dec., 1965 [29 Oct., 1965], No. 52073/65. Headings C2C and C2V. [Also in Division A5] The surfaces of solid particles comprising or consisting of an acid or alkaline material are modified by causing a chemical reaction between the said acid or alkaline material and an alkali or acid to produce a salt and water and stopping the reaction by complete drying to remove all the water present, thereby to form a layer of a salt on the surfaces of the particles. The invention is described with reference to medicaments, e.g. 1-phenyl-2,3-dimethyl-pyrazolene (" Antipyrine "-Registered Trade Mark), sodium meprobamate (2 - methyl - 2 - n - propyl - 1,3- propanediol dicarbamate) and ascorbic acid, and to tartaric and citric acids for use in effervescent formulations. The neutral medicaments are mixed with lactic and adipic acids respectively and the mixture is treated with moist ammonia and the acids are reacted with NaHCO 3 , NaOH and MgO.
Patent GB-1075747-A (GB)
Title: Process for treating textiles
IPC: D06M11/44
Filed: 1964-12-23
Abstract: A textile fabric material, e.g. tufted or woven carpet, is backed by a process comprising the steps of compounding a rubber latex mix from natural rubber latex, synthetic rubber latex or a blend of such latices, a mineral filler and a gelling control agent comprising zinc oxide, adding a gelling agent to the mix, applying the mix to one side of a textile fabric, heating the mix, embossing the exposed surface thereof and drying the mix, the concentration of gelling and gelling control agents being such as to ensure that the embossed pattern can be applied to and be retained by the mix until the mix has been dried.  The compounded rubber latex mix may also include vulcanising agent, and wherein the embossed gelled mix is subsequently vulcanised and dried by further heating.  The mix may have a viscosity (defined) between 200 and 1000 CP, e.g. between 250 and 650 CP.  The textile fabric material may be a tufted carpet and the compounded latex mix is applied directly to the back thereof. The mix may be applied at a rate of not less than 500 g. per square metre.  The gelling agent may be an ammonium salt, e.g. ammonium chloride, sulphate or acetate, or a zinc ammonium salt, e.g. zinc ammonium sulphate. Fabric material specified are nylon pile cotton stockingette fabric, looped pile tufted carpets, cloth, and blankets.
Patent GB-1332069-A (GB)
Title: Yarn treatment process
IPC: D06B23/30
Filed: 1971-11-11
Abstract: 1332069 Treating yarns MONSANTO CO 11 Nov 1971 [12 Nov 1970] 52443/71 Heading B5B In a process for treating yarn 20 which is fed from a yarn supply 22 (e.g. a spinning cabinet or yarn package) via a spin-finish applicator roll 23 and a feed roll system 24, 26 to an insulated chamber 30 containing a draw roll system 32, 34 the build-up of deposits of spin-finish composition in the yarn tracks of the heated draw roll 32 is prevented by jetting fluid (e.g. saturated steam) heated to above 100‹ C. from nozzles 52 directed towards the deposits on the roll surface at a point remote from the part of the roll contacting the yarn. As illustrated the draw roll 32 is preferably electrically heated via terminals 40 to above 100‹ C. and the jetting device comprises a tube 42 supplied with steam through flexible tube 50 from reservoir 48. The tube 42 may be reciprocated along an axis parallel to the heated roller axis by means of cam 44 and spring 46. Chamber 30 may be provided with exhaust line 54 to prevent steam from escaping through the entrance and exit slots in the chamber. The stretching of nylon 6À6 yarn is exemplified.
Patent GB-1207905-A (GB)
Title: Titanium dioxide pigment having improved wettability
IPC: C09D135/02
Filed: 1968-11-05
Abstract: 1,207,905. Titanium dioxide pigments. NATIONAL LEAD CO. 5 Nov., 1968 [15 Dec., 1967], No. 52461/68. Heading C1N. A pigment comprises particles of titanium dioxide individually coated with 0À1-1À0% on a dry pigment weight basis of an esterified styrene-maleic anhydride copolymer. The pigment is made by adding the copolymer to the titanium dioxde and milling the mixture. The titanium dioxide used may be anatase or rutile, and may be derived from the sulphate or chloride processes. The ratio of styrene to maleic anhydride in the copolymer may be 1 : 1 to 3 : 1, with a chain length of 2 to 8. The esterifying radical may be derived from ethylene glycol monobutyl ether. The copolymer, as a dry powder, may be blended with dry titanium dioxide, or it may be added to an aqueous slurry of the titanium dioxide during or after postcalcination treatment with hydrous oxides of, for example, titanium, aluminium, zirconium or silicon. Alternatively the copolymer, in hydrolysed form as an aqueous, alkaline, e.g. ammoniacal, solution, may be sprayed on to dry titanium dioxide just prior to or during milling, for which a steam " Micronizer " (Trade Mark), operated at 50-90 p.s.i.g. and a steam/pigment ratio of 2/1 to 10/1, is preferred. The coated pigment shows a reduced tendency to agglomerate during storage, and improved wettability in formulation of coating compositions.
Patent GB-1335535-A (GB)
Title: Process for the production of starch syrups that have fructose on their molecular ends
IPC: A23L27/30
Filed: 1970-11-05
Abstract: 1335535 Starch syrups containing oligoglucosyl fructose K HAYASHIBARA 5 Nov 1970 [9 Nov 1969 14 Jan 1970] 52759/70 Heading C3U Starch syrups containing oligoglucosyl fructose are produced by adding to a liquefied starch solution a sugar mixture (or mixtures) containing sucrose and/or fructose as an acceptor or acceptors and then subjecting the resulting solution to the action of amylase from Bacillus macerans. The enzyme α-1,6-glucosidase may be used co-jointly. The acceptor may be invert sugar, partially inverted sugar, isomerized glucose, date sugar, honey or molasses. It is stated that formation of cyclodextrins is largely avoided when the D.E. of the liquefied starch solution employed exceeds 10. The product may be spray-dried.
Patent GB-1287423-A (GB)
Title: Improved aerosol dispensing valve assemblies
IPC: B65D83/14
Filed: 1969-10-29
Abstract: 1287423 Pressurized dispensing container valves SCOVILL MFG CO 29 Oct 1969 [30 Oct 1968] 53049/69 Heading F1R An aerosol dispensing valve assembly comprises a one-piece moulded valve housing including an expansion zone 44 whose curving walls increase gradually to a port 45 communicating with a chamber whose walls 19 also taper gradually to the region of the valve head 23. The valve head 23 has a slightly dished upper surface 24 such that its edge 25 seats and seals against a gasket 15. The assembly includes a valve stem 26 containing a rectangular passage 31, leading to a top cylindrical portion 32, whose side walls intersect grove 30 to form two stem orifices 33. The stem 26 also includes channels 34, 35 with flaring surfaces 36, 37, 38, 39 to allow high velocity flow, at the bottom of the stem. During operation a slight amount of fluid is left in the stem 26 and it tends to collect at the orifices 33. To overcome this, two opposing side walls of the passage 31 are closely spaced and leads directly away from orifices 33; the fluid being pulled away from these orifices by capillary action, Fig.4.
Patent GB-1523590-A (GB)
Title: Oil pick up device
IPC: E02B15/04
Filed: 1974-12-09
Abstract: 1523590 Device for picking up floating oil BRITISH PETROLEUM CO Ltd 3 Dec 1975 [9 Dec 1974] 53089/74 Addition to 1419114 Heading B1D A device for picking up oil floating on water comprises a circular array of polyvinyl chloride discs 1 mounted on shafts 2, connected together by universal joints 4 and rotated by one or more motors 5 as the device floats on the water (Fig. 2, not shown) with discs one quarter immersed. The discs are preferentially wetted by oil which is removed by fixed rubber or plastics blades (7) and delivered to central bowl 8, from which it is pumped via outlet 9. Motors 5 may be hydraulic or pneumatic, powered from a diesel engine. As shown pneumatic motors 5 receive air from peripheral pipe 10 which also acts as a guard rail. The device is supported by a float chamber (12) beneath bowl 8, and means (not shown) may be provided to maintain the immersion of discs constant as oil is picked up, e.g. by varying the air-water interface level in an open float chamber.
Patent GB-1200650-A (GB)
Title: Method of and apparatus for hauling lumber
Inventor: KOLPE RAGNAR OLOF
IPC: A01G23/00
Filed: 1967-11-22
Abstract: 1,200,650. Rope railways. R. O. KOLPE. 22 Nov., 1967 [24 Nov., 1966], No. 53129/67. Heading B7L. [Also in Division B8] Apparatus for hauling lumber from a felling spot to a road for truck transport of the lumber comprises a winch unit 17, Fig. 2, suspended from and manually movable along a cable 13 suspended from trees on alternate sides of the road, by chain braces 15, the unit 17 carrying a radio-controlled motor for driving a winding drum 19 for a hauling wire 37. The unit 17 is connected to carriage wheels 33, 35 movable along the cable 13 by a vertical rod 40, swivel joint 42, shackle 44, hook 38 and a carriage yoke 27, 29, 31, whereby the unit 17 can rotate about a vertical axis. During hauling of lumber the unit 17 is connected by an anchor chain or stay 39 to a tree so as to extend from the cable 13 on the side opposite to that from which the wire 37 extends. The cable 13 passes through spring hooks 16 on the braces 15 and is tensioned from one end. The carriage can be shifted from one side to the other of a hook 16 by pivoting the yoke about one wheel 33, 35 at a time, by means of a hand lever 36.
Patent GB-1411080-A (GB)
Title: Mounting arrangements for printed circuit boards
IPC: H05K3/00
Filed: 1971-11-17
Abstract: 1411080 Printed circuits LUCAS INDUSTRIES Ltd 9 Nov 1972 [17 Nov 1971] 53273/71 Heading H1R Printed circuit boards 10, 11 (Fig. 2) respectively comprise ceramic cards 12, 13 carrying conductor patterns of fired or metallic ink, together with circuit components 14 secured to the patterns. A pair of frame members 15, 16 each comprise a pair of metallic side elements 17, 18 (Fig. 3) slotted to receive the ends of spaced parallel braided copper webs 19 extending between the frame members 15, 16 to which they are brazed: elements 17, 18 also being brazed together. Ceramic strips 20 are interposed between the webs, and the boards 10, 11 are secured to the intervening webs and strips by heat cured epoxy resin adhesive films, while an additional ceramic strip 21 is interposed between the boards at adjacent edgs 10a, 11a. Projections 22 of the frame members 15, 16 overlap the boards 10, 11 which are engaged by retaining buffers 23 and an exposed gap is left at each end of the webs, while the frames 15, 16 may be fixed to supports through holes 24 at the carriers. A synthetic resin printed circuit board 25 with conductors on both sides is sandwiched between boards 10, 11 and connected to appropriate circuitry on the boards, the board 25 engaging a known socket (not shown). Webs 19 serve as heat sink and earth connection.