baber/WOPTO huggingface dataset:
Patent GB-1009896-A (GB)
Title: Improved pregnancy test and reagent therefor
IPC: G01N33/76
Filed: 1961-12-29
Abstract: A reagent for use in a serological pregnancy test comprises a suspension of particles, having an average diameter of 0,81 microns and which are chemically inert, having adsorbed thereon human chorionic gonadotrophin.  Suitably, the particles are made of polystyrene.  In use, an incubated urine-antiserum mixture is added to a suspension of the above particles in an aqueous solution isotonic with the said mixture, which may have a pH of 7,9-8,8, and the whole is incubated.  Agglutination of the particles occurs if no inhibition of the antibody of the antiserum has occurred on account of the presence of human chorionic gonadotrophin in the urine sample and the particles can be sedimented by light centrifugation.  If the resulting supernatant is cloudy, HCG is present in the urine, inhibiting the anti serum from subsequently causing agglutination of the solid particles and the test is positive.  If the supernatant is clear, the test is negative.
Patent GB-1113907-A (GB)
Title: Method of and apparatus for arc welding
Inventor: SATO HIROSHI
IPC: B23K9/10
Filed: 1966-10-20
Abstract: 1,113,907. Supply systems for arc-welding apparatus. HITACHI Ltd. 20 Oct., 1966, No. 47043/66. Heading H2H. The operational stability of an alternating current arc-welding apparatus is enhanced by arranging that the waveform of the welding current is made to approximate to a square wave so that it has a lower peak value and a greater rate of change through the zero value than a welding current having a sinusoidal waveform. An A.C. welding electrode E and workpiece W is fed from the secondary winding S of a welding transformer T by way of a bridge configuration of silicon controlled rectifiers D 1 -D 4  across the D.C. terminals of which is connected an inductor L. Fig. 7 shows an arrangement wherein both an A.C. welding apparatus E 1 , W 1  and a D.C. welding apparatus E 2 ,W 2  can be used with the inductor L in the connections to the apparatus E 2 , W 2 . A switch is provided whereby terminals 11, 12 or terminals 13, 14 may be short-circuited to allow either the A.C. or the D.C. apparatus to be used. The electrodes E may be of the consumable or non-consumable type.
Patent GB-1507570-A (GB)
Title: Recirculating-ball mechanism
IPC: F16C29/06
Filed: 1975-11-14
Abstract: 1507570 Bearings SKF INDUSTRIAL TRADING & DEVELOPMENT CO BV 14 Nov 1975 [15 Nov 1974] 47069/75 Heading F2A A recirculating ball mechanism comprises an annular cage having a plurality of recirculation paths, the radially outer surface of the cage being provided with an annular series of load supporting raceway plates 2 alternating with unloaded return plates 3, the return plates being detachably connected to the cage by means of stud and socket fastenings 10, 11. The return plates 3 and the cage may be made of glass fibre reinforced polyamide. In an alternative embodiment (Figs. 5 and 6, not shown), the studs extend radially outwardly from the cage and engage in slots in the return plates, retention being by means of expanded end portions on the studs. In a further embodiment (Fig. 7, not shown), the load supporting plates are provided with rebated circumferential edges, co-operating coaxial projections provided on the adjacent return plates extend into the rebates.
Patent GB-1280466-A (GB)
Title: Improvements in or relating to fastener inserting machines
Inventor: HENSHAW JAMES NORMAN
IPC: H05K13/04
Filed: 1968-10-08
Abstract: 1280466 Eyeletting GEORGE TUCKER EYELET CO Ltd 7 Oct 1969 [8 Oct 1968] 47551/68 Addition to 1205642 Heading B3U An eyeletting machine similar to that disclosed in parent Specification 1,248,911 includes a work support 326 which is raised after a setting operation tolift the workpiece and strip the eyelet from the pin 98 of the lower die 74 before the lower die support 72 rotates to bring a fresh eyelet to the setting locality. The yoked support 326 is pivoted to a yoked link 342 which is in turn pivoted to a slide 330. The piston rod of a pneumatic cylinder 340 is connected via an arm 336 to the slide 330 so that actuation of the cylinder 340 causes the support 326 to be raised about a pivot pin 324. When the slide 330 is moved a trip arm (320) (Fig. 3, not shown) is released to control the rotation of the die support 72. The cycle of operations is controlled by a pneumatic circuit (Fig. 4, not shown).
Patent GB-1482197-A (GB)
Title: Couplings for units such as pipes and the like
IPC: F16L37/23
Filed: 1973-10-11
Abstract: 1482197 Pipe couplings FPT INDUSTRIES Ltd 8 Oct 1974 [11 Oct 1973] 47643/73 Heading F2G A coupling for joining two units, e.g. pipes comprises a plug 11 and socket 19 attached respectively by screwthreads 12, 20 to the units, the socket 19 including an outer cylindrical sleeve 34 housing a camming sleeve 36 and a connection sleeve 25 within the camming sleeve carrying steel balls 26 for engagement with circumferential groove 15 on plug 11, the connection sleeve 25 being axially slidable relative to outer sleeve 34 and to camming sleeve 36; a compression spring 41 located between camming sleeve 36 and washer 31 which by pressing against flange 29 urges connection sleeve 25 away from the free end of socket 19 and a compression spring 42 located between flange 33 and washer 30 which by pressing against flange 29 urges connection sleeve 25 towards the free end of socket 19, the plug 11 having tapered lead 13 which engages balls 26 and thereby on applying an axial pushing pressure moves connection sleeve 25 inwards compressing spring 42 until balls 26 register with recess 38 in camming sleeve 36 allowing the balls to move radially outwards and travel along portion 14 of plug 11 to enter groove 15 and on removal of the pushing pressure allowing the parts to stabilize in the connected position. By applying an axial load in the opposite direction to overcome the force of spring 41 connections 25 moves so that balls 26 register with recess 39 in camming sleeve 36, the balls moving radially outwards freeing plug 11 from socket 19. By selecting the strength of spring 41 the axial force required to separate the plug and socket is determined. The strength of spring 42 determines the force required to connect the plug and socket, the circlip 32 and washers 30, 31 preventing springs 41, 42 from contributing to each other's loading. Valve 23 on elongated spigot 21 in socket 19 and valve 17 on plug 11 are urged by springs 24, 18 respectively to close bores 22, 16 when plug 11 and socket 19 are separated and are arranged to open when the plug and socket are connected. In a second embodiment, Fig. 5, using an identical plug, the socket 44 does not have an elongated spigot and the connection sleeve 45 carrying balls 26 is supported by and moves axially in the bore of socket 44 and in the bore of camming sleeve 36 carried by outer cylinder sleeve 43. The bore of connection sleeve 45 houses valve 23. Springs 41, 42 respectively have the same function as in the first embodiment but spring 42 is arranged so that it can expand to its free length when socket 44 is stabilized in either the connected or separated condition. In a third embodiment similar to the second embodiment ducts are provided in the socket to interconnect the spaces between the sleeves and the bore of the socket to equalize the pressures therein.
Patent GB-1337669-A (GB)
Title: Removal of cationic impurities from commercial grade phsophoric acid
IPC: C01B25/46
Filed: 1971-10-14
Abstract: 1337669 Purification of phosphoric acid R A OETKER [trading as CHEMISCHE FABRIK BUDENHEIM RUDOLF A OETKER] 14 Oct 1971 [14 Oct 1970] 47844/71 Heading C1A Impurities in commercial grade phosphoric acid are precipitated by addition of an organic water soluble solvent and alkali metal or ammonium ions in a quantity of from 0À06 to 0À12 mol per mol of P 2 O 5 , the precipitate is filtered off and the solvent/phosphonic acid phase is purified by means of a strongly acid cation exchanger in the H<SP>+</SP> phase and the purified phosphoric acid freed from the solvent by distillation. The water-soluble solvent is preferably used in an amount between 2 and 5 times greater than that of the crude acid, and the preferred solvent is isopropanol. The cation exchange treatment removes any alkali metal or ammonium salts entrained in the solvent/ phosphoric acid mixture. Any aluminium, calcium, iron or titanium impurities present in the impure acid are removed, the deposit obtained being easily filterable.
Patent GB-1470194-A (GB)
Title: Process for the manufacture of aminoplast and phenoplast moulding compositions using a thin layer evaporator or a roller drier
IPC: C08G12/00
Filed: 1974-11-05
Abstract: 1470194 Dehydrating aminoplast and/or phenoplast moulding compositions CIBAGEIGY AG 5 Nov 1974 [5 Nov 1973] 47847/74 Heading C3R Moulding compositions are prepared by drying a urea-formaldehyde, melamine-formaldehyde, phenol-formaldehyde or phenol-melamineformaldehyde solution, optionally containing a pigment and/or mineral filler, in a thin layer evaporator or roller drier, wherein water is removed by heating and the dried material issues in the fused or solid state, optionally adding filler, pigment, lubricant and other additives, and warm-densifying the mixture. Suitable resin solutions contain about 50% resin solids and have a water compatibility of 1 : 1À2-3À5. The dried material preferably contains at most 8 wt. per cent water; the warm-densified material may be granulated for injection moulding or pulverized for compression moulding. In the Examples syrups of an MF resin (M : F ratio 1 : 1À6) a PMF resin (P : M : F ratio 0À2 : 1 : 2À5) and a UF resin (U : F ratio 1 : 1À5) are fed into a thin layer evaporator heated by steam at 190 C. or into a roller drier; the issuant melt is cooled on a flaker roller, ground, mixed with cellulose containing BaSO 4 , lithopone, or ZnO, and zinc stearate, a catalyst and pigment, worm-densified in a screw-extruder and cut into 4 mm. particles.
Patent GB-1028505-A (GB)
Title: Unbalanced weights for shaking grids
IPC: B06B1/16
Filed: 1963-12-04
Abstract: 1,028,505. Vibratory mechanism. ZAVODY V.I. LENINA PLZEN, NARODNI PODNIK. Dec 4, 1963, No. 47877/63. Heading F2X. A weight 3 is mounted on a rotary shaft 1 by plates 2, forming a housing, and bolts 4 provided with nuts 5 and springs 8. The components are counter-balanced by a weight 9. On rotation of shaft 1, the centrifugal force acting on weight 3 causes it to move radially outwardly against the action of springs 8. The outward movement is limited by stops 12. In a modification, a weight 23, Fig. 3 (not shown), is attached to an eccentrically mounted drum 22 and moves circumferentially against the effect of spiral springs 24. The invention is applied to shaking grids.
Patent GB-1522038-A (GB)
Title: Vapour-phase yarn heaters
IPC: D02J13/00
Filed: 1976-10-22
Abstract: 1522038 Heating yarns HEATING ELEMENTS Ltd 22 Oct 1976 [22 Nov 1975] 48106/75 Heading D1F A yarn heater as may be incorporated in yarn processing e.g. drawing and texturing, machines, comprises an elongate hollow member providing a yarn contact surface a first part of which is heatable directly by condensation of fluid heat transfer medium in the hollow member and a second, generally shorter, part of which is adapted to reach a temperature different from e.g. 100‹C lower than, that of the first part. Thus the hollow member may be partitioned to form two compartments, one underlying each contact path so that the second part is relatively inaccessible to the fluid; it may be surrounded by heat insulating material except for the contact surface; it may have a region heated, without the intervention of a heating fluid, by an automatically controlled electrical heating element which bears against the wall defining on its other side the second part of the contact surface or against the rear wall of the compartment to transmit heat indirectly to such surface; it may contain a plug of solid or porous heat resistant material e.g. metal or ceramic, which restricts or prevents access by the heating fluid or dissipates the heat transmitted to one part of the contact surface; it may contain a controlled amount of non- condensable gas.
Patent GB-1324208-A (GB)
Title: Aircraft wheel well seal
IPC: B64C25/16
Filed: 1971-10-15
Abstract: 1324208 Aircraft undercarriage seal B F GOODRICH CO 15 Oct 1971 [16 Oct 1970] 48136/71 Heading B7G [Also in Division F2] An inflatable seal, for example for closing the space between a wall 23 of an aircraft wheel well 22 and a tyre 15, comprises an annular body 32 of resilient elastomeric material having a radially outer wall 33 for attachment to the wheel well wall 23 and a radially inner wall 34 movable upon inflation into engagement with the tyre (chain lines, Fig. 3). Reinforcing cords (48), Fig. 4 (not shown), may be embedded in and adhered to the material of the body 32. The body is secured to the wall 23 by means of screws 38 passing through two fastening strips 37 between edge portion 35 and cylindrical extension 36, and is inflated through a tube 42 to engage the tyre. The resilience of the elastomeric material is such that the body 32 contracts away from the tyre immediately upon deflation. One of the strips 37 and its screws may be replaced by segmental metal strips (73), Fig. 5 (not shown), having outwardly extending threaded studs (74), embedded in and adhered to the elastomeric material. Alternatively, Fig. 7 (not shown) the outer wall of the inflatable body may terminate in beaded edges (77), (78) which are clamped between plates (83) and (84) bolted to the wheel well wall 23.
Patent GB-1165565-A (GB)
Title: Improvements in or relating to the Formation of Electrically Insulating Layers.
Inventor: BINGHAM KENNETH CHARLES ARTHUR
IPC: H05K3/00
Filed: 1966-10-29
Abstract: 1,165,565. Printed circuits. INTERNATIONAL COMPUTERS Ltd. 9 Oct., 1967 [29 Oct., 1966], No. 48583/66. Heading H1R. In a method of forming a patterned electrically insulating layer on a support (e.g. a substrate carrying a printed circuit) the support is first coated with a positive photo resist layer which is masked, exposed to light, and developed leaving a resist pattern e.g. stripes 8 (Fig. 5) on the support 1. An insulating layer 9 of polymer is then formed thereon in a vacuum chamber 10 (Fig. 7). Monomer vapour from a source 12 is introduced into the chamber and electrons from an electron gun 13 polymerize the monomer vapour to form the required layer 9. The support is then immersed in a solvent bath to remove the resist stripes lying beneath the polymer layer so that portions of the polymer layer deposited on the stripes fall away leaving stripes 2 (Fig. 1) of insulation. The solvent bath may be agitated ultrasonically (Fig. 8, not shown). If required electrically conductive layers (e.g. a layer of chromium and a layer of gold) having the same pattern as the polymer layer 9 and in alignment therewith may be formed thereover by vapour deposition in the vacuum chamber before dissolving the resist pattern in the solvent bath. The polymer may be dimethyl polysiloxane.
Patent GB-1024870-A (GB)
Title: Device for circulating and turbulently intermixing a fluid with a liquid
IPC: B01F3/04
Filed: 1963-12-09
Abstract: 1,024,870. Mixing fluids; steam distillation. ABBOTT LABORATORIES. Dec. 9, 1963 [Dec. 17, 1962], No. 48595/63. Headings BIB and B1C. Apparatus for circulating and turbulently intermixing a liquid and steam to drive off a volatile component comprises a vessel 12, Fig. 1, through which the liquid is circulated by means of the tubes 11, 15, 16, 17, and 18 which re-enters the vessel 12 tangentially. Steam under pressure is supplied by a pipe 23 to a manifold 24 and thence is discharged as jets into the liquid stream by pipes as at 28, 29, 30, 31, 34, Fig. 2; coaxial conical baffles as 28<SP>1</SP>, 31<SP>1</SP>, 34<SP>1</SP> surround the discharge ends of the steam jet pipes and guide the liquid into the steam jets. The baffles are supported independently of the steam jet pipes by a plate 36. These may be one only or several steam jet pipes and the plate 36 may extend completely across the tube 16 so that all the liquid must pass through the baffles. (Figs. 3 to 9, not shown).
Patent GB-1489365-A (GB)
Title: Photo-sensitive resin composition
IPC: C08F2/50
Filed: 1974-11-11
Abstract: 1489365 Photocurable compositions containing pullulan SUMITOMO CHEMICAL CO Ltd and HAYASHIBARA BIOCHEMICAL LABORATORIES Inc 11 Nov 1974 [12 Nov 1973 (2)] 48732/74 Headings C3P and C3U [Also in Division G2] Photocurable (photosensitive) compositions useful as water-developable layers in the production of printing plates and photoresists comprise pullulan (a polysaccharide containing maltotriose units) and/or a derivative thereof, a photopolymerizable monomer, a photosensitizer and a thermal polymerization inhibitor. In another aspect of the invention, the photosensitive compositions comprise cinnamoylated pullulan and a photosensitizer. The pullulan derivative may be an acetylated derivative, or an unsaturated ester derivative obtained by treating pullulan with a halide of an ethylenically unsaturated acid such as acrylic, methacrylic, fumaric, maleic, crotonic, itaconic or citraconic acid. The monomer may be acrylic or methacrylic acid or an amide or ester thereof (including di-esters), N-vinylpyrrolidone or vinyl acetate. Exemplified as photosensitizer are 5 - nitroacenaphthene, 3 - methyl - 1,3- diaza - 1,9 - benzanthrone, Michler's ketone, sodium anthraquinone - α - sulphonate, uranyl nitrate, benzoin, α - methylbenzoin and benzoin methyl ether. Examples 3-6 describe the esterification of pullulan with acetic anhydride, acryloyl chloride and cinnamoyl chloride.
Patent GB-1086916-A (GB)
Title: Apparatus for sowing seeds
IPC: A01C5/06
Filed: 1964-12-01
Abstract: 1,086,916. Seed sowers. G. GUGENHAN, [trading as H. F€HSE & CO]. Dec. 1, 1964 [Dec. 30, 1963], No. 48735/64. Heading A1D. A seed sower includes a contact pressure roller 1, for pressing sown seeds into the base of a furrow, mounted on a frame 5 for movement in a vertical plane about a shaft 7, the roller being axially displaceable on its supporting shaft 6 for lateral adjustment relative to the frame. In a second embodiment the frame is mounted at its forward end on a vertical pivot for movement in a horizontal plane which pivot is itself mounted on a horizontal shaft for movement in a vertical plane.
Patent GB-1515168-A (GB)
Title: Tongue plate device and three-point seat belt system including same
IPC: B60R22/18
Filed: 1975-12-01
Abstract: 1515168 Seat-belt fastenings TOYOTA JIDOSHA KOGYO KK 1 Dec 1975 [30 July 1975] 49211/75 Heading E2B The relative lengths of the lap and shoulder portions of a seat belt 25 may be adjusted and maintained by means of the device 1 having a slot 8 at one end through which the belt passes and a hole 7 at the other for engagement with the belt buckle. The device 1 comprises a tongue plate 2 in which the holes 7 and 8 are located, a locking plate urged resiliently towards hole 8 to engage the belt passing through the hole and prevent it moving, a cover plate secured to tongue plate 2 so that the locking plate may slide between them, and means for moving the locking plate away from the belt against the urging. In the embodiment of Fig. 3, locking plate 3 is urged by leaf springs 5 towards hole 8 and levers 6, pivoting on cover plate 4 engage the central portions of those springs. By squeezing together parts 6B of levers 6, projecting sideways from the assembled device, the springs 5 may be made to bend more and withdraw plate 3 from engagement with the belt 25.
Patent GB-1323377-A (GB)
Title: Antibiotic complexes
IPC: A23K20/195
Filed: 1971-10-25
Abstract: 1323377 Complexes of antibiotic AV290; sulphonic acids AMERICAN CYANAMID CO 25 Oct 1971 [3 Nov 1970] 49518/71 Headings C2A and C2C [Also in Division C3] Novel complexes of antibiotic AV290 and a syntan are prepared by acidifying a whole or filtered AV290-containing fermentation broth to pH 1À4 to 5À0, adding a syntan and recovering the precipitated complex. Syntans are defined as synthetic tanning agents which are condensation products of formaldehyde and sulphonated phenols (e.g. phenol, cresols, naphthols or bis-phenols) or naphthalene-sulphonic acids, or of formaldehyde, phenols and a bisulphite or SO 2  (see Division C3). The complexes are recovered by filtration or centrifugation and when a whole fermentation broth is used, they are obtained in the form of a composition of the complex together with the broth solids (e.g. mycelia and other insoluble matter), which is then dried, for example by reslurrying in water and freeze-drying or spraydrying, or by slurrying in a water-miscible organic non-solvent (e.g. acetone), filtering and air-drying. The syntan is preferably added as an aqueous solution, in slight excess of amount required to completely precipitate the complex. The antibiotic is loosely bonded to the syntan and may be isolated therefrom by absorption on cross-linked carboxymethyldextran gel and eluting with aqueous acid. Animal feed supplement compositions having growth-promoting and feed efficiency-enhancing activity comprise a dried mixture of fermentation broth solids and the antibiotic AV290- syntan complex, optionally together with an edible carrier and/or a nutritionally balanced animal feed. A sulphonated naphthalene-formaldehyde condensate probably having the formula wherein n is zero to 4, is prepared by sulphonating naphthalene at 105 C. with 93% H 2 SO 4  and treating the reaction mixture with aqueous formaldehyde. A sulphonated phenol-formaldehyde condensate probably having the formula: wherein R is -SO 3 H and n is zero to 4, is prepared by reacting phenolsulphonic acid and aqueous formaldehyde solution at 100 C. and then cooling to precipitate the said product. Reference has been directed by the Comptroller to Specification 1,194,365.
Patent GB-1176507-A (GB)
Title: Improvements in or relating to Moisture-sensitive Electrolytic Cells
Inventor: WALKER JAMES ANDREW JAMIESON
IPC: G01N27/42
Filed: 1967-10-31
Abstract: 1,176,507. Electro-physical measurement - moisture. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. Oct.3, 1968 [Oct.31, 1967], No.49530/67. Heading G1N. In an electrolytic cell for determining the humidity of gases, at least one of the electrodes is enclosed in a porous sleeve to prevent physical contact and short circuit between the electrodes. As shown spiral electrodes 1, 2 are wound on a P.T.F.E. former 3 and enclosed in a glass tube 4. The electrode 1 is sheathed in woven glass fibre and the electrode assembly is coated with phosphoric acid.
Patent GB-1487083-A (GB)
Title: Photographic material containing an iodoso or iodoxy oxidant
IPC: G03C8/00
Filed: 1974-11-15
Abstract: 1487083 Photographic material containing an iodoso or iodoxy oxidant EASTMAN KODAK CO 15 Nov 1974 [16 Nov 1973] 49600/74 Heading G2C  A material comprises a support and at least one photographic image-recording layer which is either (i) a photo-sensistive silver halide emulsion layer, or (ii) a layer dyeable by an image dye, at least one  layer of the material containing an oxidant of the Formula: - where X is a carboxylic or sulphonic acid group; Q is - IO 2  or a derivative thereof; and Z completes a 5-to 7-membered ring. The oxidant may contain a ballast group and may have a polarographic halfwave potential more positive than - 0À5V and a reduction potential from -0À1 to -0À5V. The material comprising layer (ii) may also comprise a layer containing a colour-forming coupler or a colour developing agent. The material comprising layer (i) may also comprise an image dye-providing associated with the silver halide emulsion. The material may be a colour diffusion transfer film unit (see Example). The material may be a silver halide material containing the oxidant and be treated to form an imagewise distribution of oxidant. The material may then be contacted with a material which will undergo oxidation, e.g. colour coupler and colour developer, to produce an image.