baber/WOPTO huggingface dataset:
Patent GB-793591-A (GB)
Title: Improvements in or relating to sewing machines
IPC: D05B73/12
Filed: 1956-06-12
Abstract: 793,591. Sewing machines. UNION SPECIAL MACHINE CO. June 12, 1956 [June 14, 1955], No. 18046/56. Class 112 Lock stitching by rotary hooks, multineedle machines. In a vertical axis rotary hook provided with a loop-seizing beak 19, the top portion 31 of the outer surface of the latter is inclined towards the axis of the hook, and a pin 39 extends outwardly from said inclined surface adjacent the base of the beak, the forward side of the pin engaging the needle thread loop 53 to carry the upper leg thereof across the top of the bobbin case 21. The lower portion 34 of the outer surface of the beak is also inclined towards the axis of the hook. A shoulder 43, formed between surface 34 and the outer cylindrical surface of the hook and located in vertical alignment with the pin, retains the lower leg of the needle thread loop for carrying the latter leg across the bottom of the bobbin case. A pair of hooks are incorporated in machine having a pair of needles 10, the hooks being disposed on opposite sides of a throat plate 23 formed with a pair of slots 54 for the feed dog 13. A projection 22 from each bobbin case lies within a gap 23b formed in a respective rib 23a projecting downwardly from the throat plate. In operation, projection 22 abuts one end of gap 23b. A finger 24 carried by a rock-shaft 27 is adapted to co-operate with a projection 25 on the bobbin case to shift the latter slightly when the upper leg of the loop 53 is in vertical alignment with gap 23b, whereby said leg may be drawn upwardly between projection 22 and the end of gap 23b previously abutted thereby. A gear 16 on a hook-carrying shaft 15 meshes with a gear 16a on a driving shaft 16b, and an eccentric 30 on shaft 15 is connected by a pitman 29 to a crank 28 on shaft 27. Needle guides. An annular plate 44 is secured to the lower surface of the hook body 18 by means of a pair of screws 45 and 46, the latter of which passes through a slot 47 in the plate. Upstanding from plate 44 is a needle guide 20 the curvature of which is such that its mid-portion extends radially outward slightly more than either end portion. Plate 44 may be angularly adjusted about the leading screw 44, in order to ensure the desired outward deflection of needles, of varying thickness, in advance of the loop-seizing beak. Work supports. The inner and outer edges of the feed dog receiving openings 54 in the throat plate 23 are bevelled as at 55a and 56 respectively. It is stated that this serves to minimize the accumulation of lint in the groove at the top of the feed dog. U.S.A. Specification 2,329,484 is referred to.
Patent GB-244357-A (GB)
Title: Method of and apparatus for preventing condensation on surfaces such as glass or thelike
IPC: A47L1/16
Filed: 1925-07-15
Abstract: 244,357. Adamson, O. July 15. 1925. Windows, preventing condensation on.-Condensation on the whole or part of the surfaces of windows &c. is prevented by means of an outer sheet of glass 3 enclosing a space the air in which is heated preferably by an' electric heater 10 supported over a trough 12 preferably provided with flexible gutters 15<a>. In the heating circuit is included a thermostatic switch to make the circuit at a given temperature. The pressure in the enclosed space is maintained equal to atmospheric pressure by means of inlet and outlet valves 16, 17, preferably of the spring-pressed ball kind. The openings leading to the valves may be adjusted by dampers. The sash 4 of the outer glass 3 is preferably provided with a grooved flexible strip 5 hitting against the fixed pane and the lower sash is preferably supported above the sill by a sheath 9 screwed to the sash.
Patent GB-1187494-A (GB)
Title: Device for Signalling a Change of a Physical Quantity with Respect to an Automatically Established Reference Value thereof
Inventor: DEGE LAJOS
IPC: G01R5/00
Filed: 1967-04-20
Abstract: 1,187,494. Electric meters; pressure gauges. VILLAMOS AUTOMATIKA INTEZET. April 20, 1967, No.18298/67. Headings G1L and G1Q. A signalling device consists in effect of a suppressed zero measuring instrument in which the degree of zero suppression is self adjusting in accordance with a first input value so that, after detecting a first input, the instrument indicates only subsequent departures from the first input value. As particularly described the instrument is an electric meter arranged to respond to the change from no current to the no-load or idle current of an electric motor and, a predetermined time after the onset of this current, the meter is arranged to give an output indication only if the motor current changes, e.g. to an on-load or working value. In Figure 1, two meter movements 10 and 12 act in opposition on a common spring 11. The movements are of different sensitivity, and the more sensitive one, 10, can be immobilized by a clamp 13. A current fed to both movements causes the more sensitive one, 10, to deflect to a position above zero and the less sensitive one, 12, to be biased hard against its zero stop. In Figure 2, 14 and 19 are the pointers and 18 and 23 the zero stops of meters 10 and 12 respectively. At a predetermined time after both movements have been energized, movement 10 is clamped and movement 12 will be deflected away from stop 23 if, and only if, the input current exceeds the value it had when the clamp was applied to meter 10. The meter 12 may be very insensitive (e.g. have only the restricted pointer travel 23-24 in Figure 2) and its deflection used to control a lamp- andphoto-cell switch 21-22, Figure 1. In Figure 3 (not shown) a spring biases the movement of an electrically driven disc and a second disc, neither driven nor biased, is idly mounted on the same rotational axis. Deflection of the first disc in response to no-load current causes, after a predetermined delay, clamping of the idle disc to the driven disc. Thereafter both discs move in unison so that the second disc moves in response to a change of input current from a no-load to an on-load value. The possibility of constructing non-electric, e.g. Bourdon-tube type, indicating instruments with the feature of sensing but not indicating a reference value and subsequently signalling departures from the reference value, is also mentioned in the Specification.
Patent GB-482243-A (GB)
Title: A method of removing iron from naturally-occurring magnesium silicates
IPC: C04B35/16
Filed: 1937-07-01
Abstract: Iron is removed from naturally occurring magnesium silicates e.g. soapstone by fusing the ground silicate in an electric arc formed between carbon electrodes to reduce the iron impurity to iron, grinding the fused material after solidification, and then separating the iron. by an elutriation, sedimentation, flotation or similar process and/or by magnetic separation.  Carbon contained in the solidified melt may be removed by heating to a glowing temperature.ALSO:Iron is removed from naturally occurring magnesium silicates, e.g. soapstone by fusing the ground silicate in an electric are formed between carbon electrodes to reduce the iron impurity to iron, grinding the fused material after solidification, and then separating the iron by an elutriation, sedimentation, flotation or similar process and/or by magnetic separation.  The purified silicates may be used for making ceramic ware; plasticizing agents specified for this purpose are clays which fire white, bentonite which fires light in colour, non-colouring organic plasticizing agents, and natural magnesium silicate, when natural magnesium silicate is used any slight discoloration which might occur on firing may be obviated by the addition of alumina.  Carbon contained in the solidified melt may be removed by heating to a glowing temperature, or it may be allowed to remain to produce porous ceramic ware on firing.
Patent GB-1509425-A (GB)
Title: Light-sensitive colour photographic silver halide materia
IPC: G03C7/18
Filed: 1975-05-02
Abstract: 1509425 Multi-colour photographic silver halide material AGFA-GEVAERT AG 2 May 1975 [2 May 1974] 18407/75 Heading G2C A photo-sensitive material comprises four silver halide emulsion layer units, three of which are sensitive to red, green and blue light respectively and are associated with cyan, magenta and yellow couplers respectively, the image dyes in at least two partial colour images having unwanted side densities (defined) on development with a p-phenylenediamine developer, and in which the fourth silver halide emulsion layer, which serves as a colour correction layer for masking the unwanted side densities in the at least two partial colour images, has been fogged to be spontaneously developable, has a lower sensitivity than the light-sensitive silver halide emulsion layers provided for producing the partial colour images and has associated with it at least one colourless coupler for producing a yellow-magenta masking image. The fogged emulsion layer may contain yellow, magenta and optionally cyan couplers. The masking fog may have a density of 0À20-1À00 density units and fogging may be effected chemically or by light exposure. Fogging may be effected before or after casting the layer. The fogged emulsion layer is preferably arranged between the support and the lowermost image-recording layer as in the Example, and may be combined with a lightinsensitive layer e.g. an intermediate gelatine layer, protective layer, filter yellow layer, colour filter layer or anti-halation layer.
Patent GB-1161006-A (GB)
Title: Improvements relating to Heavy Metal-Containing Formazane Azo Dyestuffs and their use
IPC: C09B62/006
Filed: 1967-04-21
Abstract: 1,161,006. Formazane azo dyestuffs. J. R. GEIGY A.G. 21 April, 1967 [22 April, 1966], No. 18457/67. Heading C4P. The invention comprises heavy metal-containing formazane azo dyes of the formula wherein each of A and B represents the radica<SP>l</SP> of a diazo component which contains X or X<SP>1</SP> in o-position to the nitrogen bond, each of X and X<SP>1</SP> represents a radical of a metal-binding substitutent, one of D and E represents the radical of a diazo component and the other that of a coupling component, Me represents a heavy metal of atomic numbers 24 to 30, Y represents a fibre reactive group bound to A, B or E optionally by way of a bridging member, which group contains at least one labile substituent or it contains an unsaturated carbon to carbon linkage; Z represents a water solubilizing group, n is a positive whole number of at most 3, p represents a positive whole number of at most 6, and 8 and t represent 1 or 2, the sum of 8 + t being at least 3. They may be obtained by various azo coupling procedures and metallizing the products, the fibre reactive groups may be introduced before or after the formation of formazane azo dye. Examples are given for the production of the dyes. They are useful for dyeing leather, paper, natural or synthetic polypeptide fibre materials and other cellulose materials.
Patent GB-613391-A (GB)
Title: Improvements in or relating to closures for cable-carrying pipes and other ducts
IPC: B63B21/14
Filed: 1946-06-20
Abstract: 613,391. Deck pipes. WOOTTON, B. M. June 20, 1946, No. 18511. [Class 113 (i)] [Also in Groups XXV and XXXVI] The upper end of a chain on deck pipe 1 is closed by a divided cover 4a, 4b, these parts being hinged together and clipped to embrace the pipe and the chain cable 3. A lug 7 on the cover ensures that the stud 3a of the cable is held level with the cover. The edges of the cover are fitted with rubber packings 6.
Patent GB-1306092-A (GB)
IPC: C09B11/12
Filed: 1970-04-17
Abstract: 1306092 Preparing monosulphonic acids of triphenylmethane dyestuffs FARBWERKE HOECHST AG 17 April 1970 [18 April 1969] 18518/70 Heading C4P Pure monosulphonic acids of triphenylmethane dyes having the general formula wherein R 1 , R 2  and R 3  are H or phenyl optionally substituted by one or two halogen atoms or at least one alkyl, alkoxy, cyano, carboxylic acid ester and/or carbamide group at least one of R 1 , R 2  and R 3  being optionally substituted phenyl and R 4 , R 5  and R 6  are H, methyl or ethyl are prepared by monosulphonation of the above dye sulphate prepared by (a) treating a solution of a colour base of the above formula in a primary aromatic amine of the benzene series with an excess of aqueous sulphuric acid, filtering the suspension obtained and then (i) drying and then treating with an inert polar organic solvent immiscible in water or (ii) treating the moist filter residue with an inert polar organic solvent with simultaneous azeotropic distillation of the water to isolate the colour base sulphate or (b) diluting a solution of a colour base in a primary aromatic amine of the benzene series with an inert polar organic solvent immiscible with water, treating the diluted solution with 20-40% sulphuric acid to convert both the colour bases and the aromatic amine to their sulphates, filtering, treating the filter residue with water optionally after drying to remove adherent inert polar organic solvent and optionally with simultaneous azeotropic distillation. The aromatic amines used include anilines, toluidines, xylidines, and alkyl esters or nitriles of aniline carboxylic acid and the ratio colour base : amine is preferably 3 : 1 to I : 10. The inert polar solvents used include ligroin, mono- or dichlorobenzene, bromobenzene, nitrobenzene, tetrachloromethane, toluene, ethylene dichloride and cyclohexane. The increased dye purity gives better dye properties.
Patent GB-566792-A (GB)
Title: Improvements in cements made from synthetic resins
IPC: C08K9/08
Filed: 1942-12-30
Abstract: Self-hardening cements suitable for assembling and repairing panels of wood, plastic, or fibrous material, are obtained by impregnating soya bean meal with a water-soluble phenol formaldehyde resin, heating the impregnated meal to cure the resin to the insoluble state, reducing the hardened material to finely divided particles which are mixed with a water-soluble urea-formaldehyde condensate and adding thereto mono-ammonium phosphate as accelerator to give a liquid cement which will harden in the cold.  Three parts water-soluble phenolic resin are mixed with 2 parts soya meal and the mixture heated in a shallow pan at 250-350 DEG  F. until an infusible mass is obtained which is ground to a fine powder.  Five parts of the powder are mixed with 10 parts urea-formaldehyde resin, and 1 part of a saturated solution of mono-ammonium phosphate.  The cement thus obtained will harden in about 30 mins.  The urea-formaldehyde resin is obtained by heating 35 parts 40 per cent formaldehyde with one part zinc dust and adding to 35 parts of the mixture 10 parts urea, boiling, removing the zinc, and dehydrating under heat and vacuum until the temperature rises to 120-130 DEG  F.  A water-soluble condensate having the consistency of petroleum jelly is obtained. The Specification as open to inspection under Sect. 91 describes the use of other fillers, e.g. fibres, wood flour and the use of other water-soluble resinous condensates unspecified.  This subject-matter does not appear in the Specification as accepted.
Patent GB-454289-A (GB)
Title: Improvements in or relating to glass feeders
IPC: C03B7/18
Filed: 1935-07-27
Abstract: 454,289. Glass manufacture. UNITED GLASS BOTTLE MANUFACTURERS, Ltd., and TIPPING, J., 40, Norfolk Street, Strand, London. July 27, 1935, No. 18536. [Class 56] A device for feeding charges of molten glass from a furnace to the moulds of a forming machine comprises a gathering-cup which dips into the molten glass and, after being filled by suction, is swung laterally through a relatively small angle into a position over a shoot that bridges the gap between the cup and the mould into which the charge is to be delivered. The feeder may be provided with two gathering- cups 2, 2a, Fig. 1, which are raised and lowered alternately and oscillate between a forehearth 3 and two shoots 24, 25, Fig. 3, which guide the charges of glass into the moulds 26 of a forming machine. The cups 2, 2a are secured to heads 16 which reciprocate vertically in a frame 14 and are swung horizontally by a reciprocating rack 36. Each of the cups 2, 2a is closed at its upper end by a sealing- plunger 50 which is moved at appropriate times to cover and uncover air ports H, formed in the gathering head, through which compressed air passes into the cups to discharge the contained glass. Each gathering head is also provided with a valve 70 that controls the application of suction to the gathering cup. A cut-off knife 80 is also provided on each head to sever the trailing glass when the cup is lifted after gathering a charge.
Patent GB-1020182-A (GB)
Title: Manufacture of ammonium phosphates
Inventor: SUCH JOHN EDWARD
IPC: C01B25/40
Filed: 1963-05-10
Abstract: Crystalline ammonium phosphates e.g. diammonium phosphate are produced by reacting wet process phosphoric acid with impure ammonia obtained by destructive distillation of coal e.g. in a coke oven or gas works, the reaction taking place at 30 DEG  to 75 DEG  C. in the presence of a polyphosphate prepared by the neutralization of a phosphoric acid having at least 75% P2O5 with e.g. potassium hydroxide or ammonia, and the N : P ratio of the liquor before crystallization being 1.5 to 2.0 : 1.  Any commercial grade acid may be used, concentrated say to 50% P2O5.  A mixture of acid and recycled mother liquor may be sprayed into the gas stream in an absorber or the gas stream passed into the mixture in a saturator. Gas stream A from a coke oven is fed into tar stripper 1a, passes into absorber 2 fed with acid and polyphosphate to give N : P of 1.9 : 1, and maintained supersaturated with respect to diammonium phosphate by varying the acid concentration or by adding ammoniacal liquor from 1a.  Ammoniacal liquor from 1a is also distilled with lime in evaporator 3 to give ammonia gas for feedback to 2.  Crystals are separated in 4 by filtration or centrifuging, and mother liquor recycled to 2.  Precipitated sulphides may be removed from mother liquor prior to recycle by e.g. centrifuging in separator 5. Polyphosphate make-up may be added to 2 or recycling mother liquor. Gas stream B passes through tar stripper 1b and reacts in absorber 6 operated at N : P of 1.6: 1 and unsaturated with respect to diammonium phosphate.  The reaction liquor is freed from sulphides in filter 7 and supersaturated with respect to diammonium phosphate at ambient temperature in evaporator 8 operated at 110 DEG  to 120 DEG C.  The supersaturated liquor is cooled to ambient temperature in chiller 9, crystals recovered in 4, mother liquor recycled to 6. Ammoniacal liquor from 1b may be added to 6 or treated as before to provide ammonia gas for 6.  Gas stream C is passed to water scrubber 10, the ammoniacal liquor decanted from tarry matter, concentrated to at least 10% ammonia in dephlegmater 11 and reacted in absorber 12 operated at N : P 1.4: 1 by controlling the acid concentration and adjusting with ammoniacal liquor from 1a and 1b, concentrated in 11. The liquor is concentrated in evaporator 13 operated at 110 DEG  to 120 DEG  C. to provide a liquor which after adjustment of the N : P ratio by the addition of further ammonia would be supersaturated with respect to diammonium phosphate, freed from sulphides in separator 14 and cooled in chiller 15.  The N : P ratio is adjusted before, during, or after cooling to 1.9: 1 by addition of ammoniacal liquor, and the adjusted liquor is fed to 4 to recover crystals, mother liquor being recycled to 12 with polyphosphate make-up.
Patent GB-1451550-A (GB)
Title: Process for producing carbon fibre
IPC: D01F9/20
Filed: 1974-04-29
Abstract: 1451550 Carbon fibres UBE INDUSTRIES Ltd 29 April 1974 [29 March 1974] 18591/74 Heading C1A A process for producing carbon fibres comprises preparing, by melt-spinning and drawing polybutadiene fibres consisting essentially of polybutadiene at least 85% of the repeating units of which are of the formula and which has a melting point of at least 100 C. and a reduced viscosity (as defined) of 0À3 to 1À2 dl./g.; treating said fibres with a solution or suspension of a Lewis acid in an inert organic liquid; treating the resulting fibres with sulphur at a temperature of 170 to 300 C.; and carbonizing the sulphur-treated fibres by heating to a temperature of 750 to 3,000 C. The polybutadiene may contain 0À5 to 3 wt. per cent of a compound of formula which acts as an anti-cross-linking agent; and the Lewis acid is preferably selected from the group comprising fluorides, chlorides and bromides of boron, aluminium, titanium, tin, antimony, iron, beryllium, magnesium, zinc and cadmium and compounds of formula R n AlY 3-n , where R represents an alkyl radical containing 1 to 3 carbon atoms, and Y represents chlorine or bromine.
Patent GB-699506-A (GB)
Title: Improvements in or relating to a method of producing a contour on a workpiece and a machine for carrying out such method
IPC: B23Q35/129
Filed: 1949-11-29
Abstract: 699,506. Electric copying machines. CAMPBELL, P. J. Nov. 29, 1949 [Dec. 13, 1948], No. 18635/52. Divided out of 699,452. Drawings to Specification. Class 40 (i) The description is contained in Specification 699,452.
Patent GB-595870-A (GB)
Title: Improvements in or relating to compound sheet materials
IPC: B32B27/00
Filed: 1944-09-29
Abstract: 595,870. Compound sheet materials. McGILL, J. H., LEES, E. W., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. Sept. 29, 1944, No. 18670. [Class 140] Compound sheet material is produced by feeding towards each other two lengths of flexible sheet material, each coated on at least one surface with a waterproof thermoplastic composition, e.g. polyvinyl chloride, the coated surfaces being softened by radiant heat just before they make contact, and then firmly bonded together by the application of pressure, as by passing the sheets between pressure rolls, which may be heated. A dispersion of ungelatinized polyvinyl chloride in a liquid medium capable of gelatinizing the polyvinyl chloride on application of sufficient heat, may be spread on to the surfaces to be coated, e.g. fabric or paper, and then heat applied, or a gelatinized polyvinyl chloride composition may be applied by calendering. If desired, an additional coating containing a polymerized unsaturated compound which can be rendered thermoplastic at a lower temperature than the polyvinyl chloride as described in Specifications 570,840 and 595,632 may be applied. The radiant heating elements are situated near the nip of the pressure rolls and may be provided with reflectors to direct the radiation on to the coated surfaces. The sheets may be fed vertically downwards between the pressure rolls.
Patent GB-628347-A (GB)
Title: An improved manufacture of hydrocarbon diesel fuels
IPC: F02B3/06
Filed: 1947-07-14
Abstract: A fuel for compression-ignition engines of the Diesel type comprises a hydrocarbon fuel and a small amount of an organic perester.  The hydrocarbon fuel may have a boiling range above that of gasoline.  A perester specified is t-butyl perbenzoate, and others mentioned are alkyl perfuroates, alkyl perstearates, alkyl perundecylenates, alkyl percrotonates, alkyl dipersuccinates, alkyl diperadipates and alkyl diperphthalates. 0.025-5 per cent of the perester may be used.  Other ignition promoters may be added, and also agents such as oiliness agents, sludge dispersers and the like.  The organic peresters are compared with tertiary butyl hydroperoxide and with 1-hydroxy cyclohexyl-1-hydroperoxide.ALSO:Organic per-esters are prepared by reacting an acid chloride with an alkyl hydroperoxide in alkaline solution.  In an example, tertiary butyl perbenzoate is prepared from tertiary butyl hydroperoxide and benzoyl chloride in potassium hydroxide solution.  Other alkyl per-esters such as alkyl perfuroates, alkyl perstearates, alkyl perundecylenates, alkyl percrotonates, alkyl dipersuccinates, alkyl diperadipates and alkyl diperphthalates may be similarly prepared.