baber/WOPTO huggingface dataset:
Patent GB-258035-A (GB)
Title: Improved treatment of the black liquor obtained in the manufacture of wood fibre by the soda process
IPC: C01D1/20
Filed: 1925-07-04
Abstract: 258,035. Hõgglund, E. July 4, 1925. Acetates; acetone; methyl alcohol.-Black liquor from the sodapulp process is subjected to a combined heat and pressure treatment at about 350‹ C. and about 150-200 atmospheres to precipitate the main portion of its organic content as carbonaceous material, part or all of the separated liquor being additionally treated to recover a further portion of the organic substances and to recausticize the alkali it contains. In a modification, the alkali is recausticized subsequent to the heat and pressure treatment and before further treatment. In an example, the pulp and liquor from a digester 1 are separated in a diffusing apparatus 2, and the black liquor, mixed with caustic soda lye from a conduit 7 to increase its alkalinity, is discharged to a high pressure container 3 where the heat and pressure treatment is effected. The carbonaceous and pitchy material is separated from the product through the conduit 8 and a portion of the liquor remaining is passed through conduit 9 to a tank 6 in which it is recausticized, and from which it is introduced, through conduit 10, into the digester 1 to decompose more wood. The remaining liquor is partially evaporated in apparatus 4, methyl alcohol and other volatile constituents passing off through conduit 11, and the thickened residue is distilled with superheated steam in furnace 5, the volatile products, mainly acetone, being carried off through ccnduit 12. The residue consists mainlv of soda and is dissolved and recausticized with quick lime in tank 6, and is used in the digester 1 and for increasing the alkalinity of the black liquor before treating it in the high-pressure container 3. Further methyl alcohol is obtained at the vent pipe 13 of the digester 1. A specific example of the process, giving the results obtained, is described. In another method, the liquor is recausticized directly after treatment in the container 3, and then concentrated and the content previously obtained as acetone now crystallized out as sodium acetate. The mother liquor from the crystallizing tank may be sent direct to the digester. The methyl alcohol is driven off and collected from the liquor coming from the container 3. Preferably only one part of this liquor is treated to recover the acetate, a further portion being causticized and directly introduced into the digester, working being arranged so that the sodium acetate concentration of the liquor sent to the digester remains constant. The increase of alkalinity of the black liquor, prior to the heat and pressure treatment, may also be obtained by adding thereto solid caustic soda, or a mixture of sodium carbonate and lime or lime alone to produce the hydrate therein.
Patent GB-885904-A (GB)
Title: Improvements in or relating to perforating machines for sheet material
IPC: B26F1/04
Filed: 1960-05-16
Abstract: 885,904. Perforating machines. YERKES, J. A. May 16, 1960, No. 17248/60. Class 31(2). A perforating machine comprises a plurality of punch head assemblies 45 mounted on a base 1 and movable along a rotatably-mounted shaft 37 oscillatable about its axis by means of a handle 39, the shaft having a longitudinal groove 38 associated with a circular tooth 93 on the reciprocable punch pin 48 of each punch head assembly, and the shaft 37 being cut away at intervals, with corresponding gaps in the wall 103 of the groove 38, to form neutral zones 95, 96 so that when the handle 39 is operated, only the punch pins of those punch head assemblies which are not positioned opposite the neutral zone or zones will be reciprocated. To facilitate positioning of the punch head assemblies, they are each provided with an index line 94 co-operable with a scale 14 on the base 1, the scale including arrowheads 101, 102 located opposite the centres of the neutral zones. Each punch head assembly is slidably mounted on a flange 8 formed on the base 1 and is releasably secured in position by means of a set-screw 65. The material to be perforated is positioned by means of a front gauge 20 and rear gauges 67, the front gauge being frictionally held by means of a spring 22 and locked in position by means of a manually-operable cam 30. Punchings are received in a detachable receptacle 109.
Patent GB-640133-A (GB)
Title: Improvements in appliances for use in sharpening or re-sharpening safety-razor blades
IPC: B24D15/08
Filed: 1948-06-28
Abstract: 640,133. Sharpening safety-razor blades. WALTON, A. L. June 28, 1948, No. 17273. [Class 60] A hand - operated device for sharpening razor blades has two sharpening rollers 2, 3 upon which the edges of the blade 10 are brought to bear, and a driving roller 7 arranged alternately to engage and rotate the sharpening rollers outwardly of the blade edges as the device is reciprocated on, and with the roller 7 engaging, a flat surface. The rollers 2, 3 are mounted in a frame 1 which fits into a casing 11 carrying rollers 12, 13 while the spindle of the driving roller is received in slots 5 in the frame 1. When the device is moved to the right, the roller travels to the left of the slots to drive the sharpening roller 2, which then drives the roller 12. The blade is located by pegs 9 and replaced by detaching the casing 11. In a second embodiment, Fig. 3, the rollers 2, 3 are connected by a gear train so that they are rotated simultaneously, and the casing 11 is hingedly connected with the frame 1 by slotted links 18, the blade being located by pegs 9. The sharpening rollers may be of resilient material dressed with a sharpening compound or of non-resilient material. In the latter case, the rollers of each pair are connected by gears.
Patent GB-1253834-A (GB)
Title: Improvements relating to jet-propelled aeroplanes
Inventor: JYJTIUK HENRYK
IPC: B64D27/10
Filed: 1968-04-10
Abstract: 1,253,834. Jet propelled aircraft. BRITISH AIRCRAFT CORP. Ltd. 10 April, 1969 [10 April, 1968], No. 17303/68. Addition to 1,135,100. Heading B7G. [Also in Division F1] In a jet-propelled aircraft as claimed in parent Specification, a number of gas generators 21 are combined in a single unitary assembly 11 and contained within the outer shell 26 of the propulsion engine. The assembly 11 comprises a front fan 18 having variable pitch blades, a turbine 20 which drives fan 18 via shaft 19, and two vertically spaced gas generators 21; each generator 21 comprises compressor stages 22, combustion chambers 23 and a turbine 24 which drives the compressor stages. Air from variable aperture intakes 16 is passed to the compressor stages via ducts 17 and front fan 18; air is also passed through by-pass duct 25 from fan 18, and exhausts through variable aperture nozzle 29 with the efflux from the gas generators. .Conventional combustion equipment is mounted in chambers (27) in the by-pass duct at both sides of the gas generators, air from duct 25 being fed thereto by ducts (251), Fig. 2 (not shown), and exhausting through nozzle 29. Power plant control lines and the like pass into the aircraft through a duct 31; engine accessories may be mounted within the shell 26 to reduce the connections through duct 31. The shell 26 is connected to the fuselage 10 by mounting ring 30. The gas generators may drive separate turbines each geared to front fan 18 via a shaft coaxial with the respective generator and a free-wheel coupling. The aircraft has variable sweep wings 12. One or both gas generators may be employed, according to whether the aircraft is climbing or cruising; for maximum thrust, the duct combustion equipment is used.
Patent GB-220426-A (GB)
Title: Improvements in or relating to couplings for railway and similar vehicles
IPC: B61G9/04
Filed: 1923-07-05
Abstract: 220,426. Weight, W. C. July 5, 1923. Draw - gear; couplings, automatic, convertible to non-automatic. - In an automatic coupling of the kind which is mounted for displacement in a vertical plane about a horizontal transverse pivot, there is applied a crosshead device connected to the pivot and adapted to continuously support the forward end of the draw-bar and the heel of the coupler while preventing the same from turning about their longitudinal axis and permitting backward and forward movement under the action of the draw-spring. A cross-member a, provided with lugs b by which it is secured to the horizontal transverse pivot e connecting the drawbar d' and the coupler C, is adapted to slide, on brackets f secured to the headstock g. The cross-member a is provided with curved ends a<1> to centralize the coupler after displacement. The coupling shank c has a hook i integral with it which is swung into position when the automatic coupling is raised.
Patent GB-981201-A (GB)
Title: Improvements relating to metal-free monazo dyestuffs which are difficultly soluble inwater, their use, and synthetic textile fibres or fabrics dyed therewith
IPC: C09B43/32
Filed: 1962-05-08
Abstract: The invention comprises metal-free monoazo dyes of the formula <FORM:0981201/C4-C5/1> wherein of Y1 and Y2, one Y is an arylazo group of the homocyclic or heterocyclic series, the other Y is a primary or secondary amino group and A is a possibly ring-substituted aryloxy group or a group <FORM:0981201/C4-C5/2> wherein R1 is hydrogen, a possibly substituted alkyl, cycloalkyl, aralkyl or aryl group and R2 is hydrogen, a possibly substituted alkyl, cycloalkyl or aralkyl group and R1 and R2 together with the amino nitrogen may form a heterocyclic ring and the dyestuff contains neither water-solubilizing groups which dissociate acid in water nor metal complex-forming groupings.  The dyes are prepared by conventional coupling procedures or by reacting an appropriate arylazonaphthalene compound having a sulphonyl chloride or bromide substituent with a possibly ring-substituted hydroxyaryl compound with an appropriate amine.  The large number of starting materials specified for use in examples includes such diazo components as 1-amino - 2,4 - dinitro - benzene, 1 - amino - 2 - chloro - 4 - nitrobenzene, 1 - amino - 2,4 - dicyanobenzene, 1-amino - 4 - nitro - 3 - carboxybutoxy-benzene, 6 - methoxy - 2 - amino - benzthiazole, 1-amino - 2 - nitro - 4 - sulphonic acid N - methyl - N - phenylamide, 2 - amino - thiadiazole, 3 - aminoindazole, 1 - amino - naphtholene and 1 - amino - 4 - ethylsulphonyl-2 - nitrobenzene, 1 - amino - 2 - nitro - 4 - trifluoro - methylbenzene and 2 - amino - 6 - methylsulphonyl - benzthiazole; such coupling components as 2 - amino - naphthalene - 5 - sulphonic acid phenyl ester, 2-aminonaphthalene - 4 - sulphonic acid (21 - methylphenyl) - ester, 2 - amino - naphthalene - 6 - sulphonic acid N - methyl - N - (b  - hydroxyethyl) - amide, 2 - amino - naphthalene-6-sulphonic acid cyclohexylamide and -di-methylamide, 2 - amino - naphthalene - 5 - sulphonic acid morpholide, such hydroxy aryl compounds as 4-methyl-1-hydroxy-benzene, 4 - hydroxy - di - phenylether, 4 - di-methylamino - 1 - hydroxy-benzene, such amines as butylamine, phenylmethamine, octylamine, dibutylamine, diethanolamine, aniline, N - b  - hudroxyethyl aniline and - morpholine. The use of mixtures of coupling components mixtures of diazo components, and of hydroxyaryl compounds is described in examples.  The dyes are suitable for dyeing cellulose acetate, glycol terephthalate, polyamide and polyacrylonitrile fibres from aqueous dispersions.
Patent GB-1429582-A (GB)
Title: Headbox for a paper-making machine oil recovery using polymer preslug
IPC: D21F1/00
Filed: 1974-04-22
Abstract: 1429582 Paper-making apparatus J M VOITH GmbH 22 April 1974 [21 April 1973] 17606/74 Heading D2A A headbox 1 for a paper-making machine comprises a discharge nozzle 2, members 8, 9 pivotally attached to the base of the headbox, and front and rear wedge-shaped cams 11, 10 under the members 9, 8, the cams having different wedge angles and being movable by a common spindle 12 in order to tilt the headbox and so adjust the angle at which stock issuing from the nozzle 2 impinges on the wire 6. As shown the spindle 12 has left- and right-handed threaded portions engaging in the cams 10, 11 such that the cams move in opposite directions on adjustment. During adjustment, the headbox is guided by guides 13, 14, preferably having arcuate surfaces 13', 14' having a common centre of curvature on the axis about which the headbox tilts. As shown the headbox tilts about an axis through the discharge slice 3 but may, as in Fig. 2 (not shown), tilt about the central axis of the pulp feed pipe 7.
Patent GB-1275703-A (GB)
Title: Process for producing continuous cleaning coating
IPC: C03C4/00
Filed: 1970-04-14
Abstract: 1275703 Enamelling metals SCM CORP 14 April 1970 [17 April 1969] 17733/70 Heading C1M [Also in Division F4] A part for use in "self-cleaning" cooking apparatus is prepared by:-(a) applying to a metal substrate (i) an enamelling composition comprising finely-divided alkali-metal-containing glass frit particles, (ii) 2-75 parts by weight, per 100 parts of enamel, of finely divided metal which is Al, Mg, high alloys or mixtures thereof, and (iii) one or more halides in an amount of ¢-25% by weight of the enamel, calculated as halogen element; (b) heating the coated substrate until the glass and metal interact to form an integral, porous, sorptive surface structure containing crystalline devitrification products; and (c) arresting the interaction by cooling before substantial coalescence of the structure occurs. Preferably the coated substrate is heated sufficiently rapidly to pass from the incipient deformation temperature of the frit to the firing temperature in less than 7 minutes, and the substrate held at the firing temperature for not more than 6 minutes. The glass may be an alkali metal borosilicate or alkali metal aluminophosphate, and the halide is preferably fluoride. The enamel composition may be applied direct to the metal or on to a ground coat. The Al or Mg may be applied as an alloy with Si, Zn, Ni, Fe, Mn, Cr, Cu or Co. The metal substrate may be sheet steel, copper or aluminium.
Patent GB-1347716-A (GB)
Title: Photographic elements
IPC: G03C5/30
Filed: 1971-05-28
Abstract: 1347716 Infrared photography EASTMAN KODAK CO 28 May 1971 [20 July 1970] 17745/71 Heading G2C A photographic element comprises at least one supported internal image silver halide emulsion which contains an infrared sensitizing dye having an absorption peak in the infrared region and in which the silver halide grains contain at least one metal dopant. In the Examples, there are described I.R. sensitized emulsions which (A) are iridium, osmium,  bismuth or rhodium cored emulsions, iridium doped emulsions, and core/shell emulsions in which the shell is sulphur and gold sensitized which are optionally hypersensitized with aqueous silver nitrate, surface sensitized with thiourea dioxide, and/or mixed with a triazine-stilbene brightening agent, or (B) are Bi doped and coated with dithiourazole/methylvinyl ether adduct. Emulsions (B) are exposed, heated and photo developed with U.V. The emulsions may be used in the silver salt diffusion transfer process.
Patent GB-145603-A (GB)
Title: Improvements in shuttle operating mechanism for embroidering machines
IPC: D05C11/18
Filed: 1920-06-29
Abstract: 145,603. Soc, Anon. A. Saurer, (Assignees of Saurer, A.). June 30, 1919, [Convention date]. Embroidery machines.-Relates to the shuttleoperating mechanism of embroidery machines of the kind comprising pins 1, 17 mounted on a reciprocating bar 3, the upper pins 1 being detachable to allow removal and displacement of the shuttle 9 in its race 10, and being normally held in position by a spring clip 18 and stud 17<1>. The invention consists in forming the bearing-surfaces between the pins 1 and the bar 3 of such a character that the wear due to repeated removal and replacement of the pins is automatically compensated and looseness of the pins prevented. Figs. 4 - - 8 show various methods by which the object of the invention is attained, 1 representing a pin and 3 the bar. In Fig. 4, the pin is substantially circular in section with a flat 7 engaging the inclined side 6 of a groove in the bar, the other side 4 of which is vertical. In Figs. 5 and 9 a circular pin rests in a V-shaped groove or on the upper edges of a rectangular groove. In Figs. 6 and 7, the pins are shown formed with bevelled sides engaging the sides of V-shaped grooves in the bar. In a modification, Fig. 8, the pins have V-shaped grooves engaged by projections 23 on the bar.
Patent GB-1134012-A (GB)
Title: Rotatable spool fishing reel
Inventor: MORRITT KENNETH PATRICK
IPC: A01K89/0155
Filed: 1965-04-28
Abstract: 1,134,012. Fishing reels. K. P. MORRITT Ltd. 5 April, 1966 [28 April, 1965; 19 Aug., 1965], Nos. 17841/65 and 35602/65. Heading A1A. A rotatable spool reel has a friction brake arranged to exert a greater braking effect on the spool at low speeds of rotation than that exerted at higher speeds of rotation. Governors 27 are pivotally fixed to the rotating spool and carry brake pads 32 which are biased by springs 25, 26 into engagement with a brake surface which is connected to the reel housing through a friction disc arranged to be pressed into engagement with the housing during one sense of rotation of the spool but released from the housing in the other sense of rotation of the spool. On rotation of the reel centrifugal force pivots the governors 27 to release the pads 32 as the speed of rotation increases until, at a high speed, the brake pads 28 are moved sufficiently to exert a braking effect. Vanes 6 cause an air disturbance to dissipate heat from the device. The friction disc, axial of the spool, is engaged by a disc having cam surfaces acted on by a manually-operated spring- biased control member to vary the force applied to the friction disc and thus the braking force. In an embodiment, the spring controlling the governor is aranged to operate by centrifugal force to release its bias on the brake pad at the higher speeds.
Patent GB-178465-A (GB)
Abstract: 178,465. Urbain, E., and Scal, C. April 14, 1921, [Convention date]. Void [Published under Sect. 91 of the Act]. Systems, electric; timing.- A generator is used to charge a condenser which, after the generator-condenser connection has been broken, is then discharged into the primary of a transformer, as described ir Specifications 165,095 and 175,277. The time of ignition is adjustable manually through the contact lever 2, and automatically by angular adjustment of the cam C.
Patent GB-1333493-A (GB)
Title: Process for the manufacture of cyanacrylic acid esters
IPC: C08G/
Filed: 1971-05-28
Abstract: 1333493 Cyanoacrylic acid esters SCHERING AG 28 May 1971 [29 May 1970] 17860/71 Heading C2C Cyanoacrylic acid esters, e.g. those of the Formula I wherein R is an alkyl, halogenoalkyl, alkoxyalkyl, alkenyl, cycloalkyl or phenyl radical of up to 16 carbon atoms, are produced in a flow process wherein the corresponding polycyanacrylic ester is introduced in the presence of a polymerization inhibitor and an inert highboiling liquid, into a reaction zone and the residues of the reaction are removed, the introduction and removal being carried out at such a rate that the maximum thickness of the layer of material in the reaction zone is 5 cm. and the reaction being carried out at 150 to 250 C. and 0À5 to 40 mm. Hg.
Patent GB-421973-A (GB)
Title: Improvements in or relating to the manufacture of bricks, blocks, slabs, tiles and like articles suitable for building and analogous purposes
IPC: C04B33/13
Filed: 1933-06-23
Abstract: An aggregate which will set and bind in the presence of moisture or when heated and is applicable to the manufacture of building and paving blocks, slabs, and tiles, and also refrigerators of the kind described in Specification 421,974, [Group XIII], is composed of granules of hard low grade or base material coated with finely divided binding material.  The base material such as clay, loam, clinker, pumice, diatomaceous earth, limestone, or crushed burnt clay is crushed or cracked up in burnt or unburnt condition and freed from dust; lime or ground clinker may be added.  The binder may be Portland or magnesium cement, or finely divided burnt or green clay, lime, clinker, or chalk, or mixtures of these substances.  The base material, preferably warm, and binder are mixed dry or wet; an alkaline silicate or calcium chloride may be added to a slurry of the binder, or be sprayed on the mix.  The binder may act as a flux when bricks made from the aggregate are burned.  About 5 per cent Portland cement may be added to the dry mix.  Colouring-agents may be added.
Patent GB-1426700-A (GB)
Title: Reiceive and sisplay optical raster scan generator
IPC: G01J1/02
Filed: 1974-04-24
Abstract: 1426700 Optical scanning apparatus HUGHES AIRCRAFT CO 24 April 1974 [21 May 1973] 17992/74 Addition to 1361145 Heading H4F Parent Specification 1,361,145 describes an optical raster scanning apparatus comprising a line scan mirror drum and a frame scan oscillating mirror so assembled in respect of the positions of drum axis and axis of oscillation, that the resulting -beam, scanning in a raster, appears to diverge from or converge to a single point thereby enabling symmetrical focusing optics to be used. The apparatus is specially described with reference to scanning an infrared scene to produce a corresponding video signal, or to scanning a light beam modulated with the video signal to reproduce the infra-red scene in visible light. The present Specification proposes the simultaneous scanning of the infra-red scene and the scanning of the modulated light beam, using respective adjacent facets 410a, 410g of the mirror drum 410 for the line scans, and a common widened oscillating mirror 428 for the frame scan. The geometrical relationships specified in the parent Specification apply for both scannings. The reproducing light beam may fall on a vidicon (Fig. 14, not shown) for remote display.
Patent GB-983210-A (GB)
Title: Window frame
IPC: E06B3/50
Filed: 1963-05-07
Abstract: 983,210. Double-opening pivoted windows. C. J. L. BAUDISSON. May 7, 1963, No. 18022/63. Heading E1J. In a window comprising upper and lower sashes 2c, 3c which overlap when closed and have a sliding-pivoted action in a frame 1, the overlapping edges of the sashes are Frameless. A cross-member 7 of each sash engages grooves 8 in the frame 1, the sashes being interconnected by a pair of levers 4 pivoted at 5. The frame 1 itself may swing about a central horizontal axis (as shown), or about a side hinge (Fig. 3, not shown).
Patent GB-102741-A (GB)
Title: High Power Turbine Plant.
IPC: F01D1/02
Filed: 1916-12-15
Abstract: 102,741. Maschinenfabrik Oerlikon. Dec. 15, 1915, [Convention date]. Motor power plant.-In a turbine installation wherein a high-pressure turbine H co-operates with two lowpressure turbines N<1>, N<2> working in parallel, the separate low-pressure turbine N<2> is coupled to the highpressure member H of the combined high and low pressure turbine HN<1> on the side away from the machine to be driven, the strength of the shaft Wand the coupling K corresponding to the output of the turbine N<2>. Specification 100,349 is referred to.
Patent GB-145736-A (GB)
Title: Improvements in and relating to the arrangement of railway track for enabling the traverse to be taken for railway guns
IPC: F41A23/40
Filed: 1920-07-02
Abstract: 145,736. Krupp Akt.-Ges., F. June 18, 1918, [Convention date]. Void [Published under Sect. 91 of the Act]. Field carriages.-Relates to tracks for railway gun-carriages so arranged that the gun is traversed by running the carriage along the track, and consists in running the front and rear bogies B<1>, B<2> of the carriage B on to different sets of rails at a junction. In the form shown in Fig. 1, the bogie B<1> is run on a curved track A, and the bogie B<2> on a straight track A'. By this means a traverse of 180 degrees may be obtained, and further, by running the bogie B<2> on the track A and the bogie B<1> on the track A<1>, the remaining traverse of 180 degrees can be effected. Fig. 3 shows an alternative arrangement in which a triangular junction having three approach lines C<3>, C<4>, C<5> is employed.