baber/WOPTO huggingface dataset:
Patent GB-147786-A (GB)
Title: Improvements in armature cores for dynamo electric machines
IPC: H02K15/12
Filed: 1920-07-09
Abstract: 147,786. Apple, V. G. March 8, 1918, [Convention date]. Armatures and field-magnets; insulation. - Cores for dynamo armatures or stators consist of laminµ held together as a self-supporting structure by the adhesion of a phenol resin cement or other material which insulates the laminµ and is hardened by heat. The laminµ 15 are held between disks 16, 17 mounted on a shaft 18, and are alined by a drift 19 which is driven through the disks and winding slots. A bath 11 over a furnace 7 contains bakelite or the like, and the shaft is slowly rotated to coat the surfaces of the laminµ. The nut 20 is then tightened to extrude the surplus liquid, and the pile is transferred to a drying oven. Sheets of paper or the like 24 allow the disks 16, 17 to be removed from the pile when set, without sticking thereto.
Patent GB-1070048-A (GB)
Title: Improvements in edge filters
IPC: B01D29/15
Filed: 1966-05-05
Abstract: In an edge filter of the kind in which spoked discs alternate with spoked rimless spacers, all mounted non-rotatably on a p  rotatable shaft, and in which scraper blades fixed to rods protrude between adjacent discs, there are provided guide rods which, together with the scraper - mounting rods, extend through annular guide plates, which, associated with spoked end plates, are located one at each end of the pack.  Each scraper-mounting rod is located in advance, (relative to the direction of pack rotation), of each guide rod, and the clearance between the guide rod and the preceding scraper blades at any one location amounts to no more than five times the radial distance between the guide rod and the periphery of the filter pack.
Patent GB-1426543-A (GB)
Title: Semiconductor devices
IPC: H01L23/12
Filed: 1974-05-06
Abstract: 1426543 Semi-conductor devices RAYTHEON CO 6 May 1974 [18 May 1973] 19863/74 Heading H1K A semi-conductor device package comprises an electrically conducting base 10, an electrically conducting planar member 13 on the base 10 and in electrical contact therewith, a thermally conducting but electrically insulating support 11 for the semi-conductor device 12 mounted on the base 10 in an aperture 14 in the planar member 13, and a conductive coating (31), Fig. 6 (not shown), on the surface of the support 11 remote from the base 10. The device is completed by a conducting spacer frame 17, an insulating apertured plate 18 having metallized regions 19, 20 for making connections to electrodes of the device 12, an insulating sealing frame 21, a cover 38 and leads 22, 23 which are hermetically sealed together. The base 10 may be made of copper and the planar member 13 of nickel or molybdenum and the support 11 is alumina or beryllia. The components are brazed together using eutectic Cu-Ag solder. MOS capacitors (29, 30) are used for impedance matching and leads of gold-plated copper are used. The device 12 may be a microwave power transistor and its use in a phased array radar system is described. Dimensions of the components of the package are given.
Patent GB-335889-A (GB)
Title: Improvements in or relating to filling bodies for use in distilling columns, absorption towers, reaction vessels and the like
IPC: B01J19/30
Filed: 1929-06-28
Abstract: 335,889. Butcher, C. H. June 28, 1929. Drawings to Specification. Gases, washing.-A filling body for absorption towers, distilling columns and the like comprises a hollow cylinder or tube in which sharp rough edges produced during manufacture are subsequently removed as by grinding; or the tubes are made by die pressing so that smooth rounded edges are formed. Specification 104,163 is referred to.
Patent GB-1129944-A (GB)
Title: Apparatus for stacking objects on pallets
IPC: B65G57/00
Filed: 1967-05-01
Abstract: 1,129,944. Pallet loading machines; endless conveyers. CARL DROHMANN G.m.b.H. 1 May, 1967 [12 May, 1966], No. 19920/67. Headings B8A and B8C. An apparatus for stacking objects G, e.g. packages, on a pallet P comprises a supply device 2, having a selectively operable turning device (not shown) and a number of stops (not shown) that project into the outlet of the supply device in accordance with a predetermined programme, so that a package or group of packages collects on the supply device before a feeder 17 pushes it on to a conveyer 51 that moves intermittently to space the packages. Adjustable spacers 21 are lowered to retain the packages in spaced relation while the conveyer moves from under them. A lift 26 then moves down ready for the next layer of packages to be arranged on top. The conveyer 51 may have a pair of chains 54 across which slats 55 are arranged preferably in two groups forming a pair of spaced platforms. Some of the slats 55 may have cams 59 that operate a switch 60 to control the intermittent movement of the conveyer 51. Alternatively the movement may be controlled by photo-electric or inductive scanning means and the conveyer 51 may be a steel strip with transverse stiffening ribs.
Patent GB-242017-A (GB)
Title: An improvement in devices for damping fabrics
IPC: D06B1/00
Filed: 1925-05-20
Abstract: 242,017. Charlesworth, J. May 20, 1925. Rotary apparatus. - The rotary spraying-member 14 of an apparatus for damping fabrics is provided with a series of perforated and corrugated or wavy discs 15; the edges of the discs are preferably tapered to a knife edge. The spray is thrown against a deflector 20 and passes through a wire-gauge screen 20<1>; a further diffusion is obtained by means of air jets 21 projected across the rear of the screen.
Patent GB-960457-A (GB)
Title: Improvements in or relating to the extraction of beryllium
Inventor: MILWARD GERVAISE LUIGI
IPC: C22B3/38
Filed: 1961-06-02
Abstract: Beryllium is extracted from aqueous acid solutions thereof by contacting the solution with an organic phase including a mixed aryl alkyl phosphoric acid or a diaryl phosphoric acid which complexes with beryllium.  Suitable extracting agents include methyl (p-tert-octyl-phenyl) phosphoric acid, di(nonyl phenyl) phosphoric acid and ethyl (p-tert-octyl phenyl) phosphoric acid. The extracting agent should be soluble in an organic diluent such as kerosene, methyl isobutyl ketone or carbon tetrachloride and be substantially insuluble in water.  The solubility in organic diluents may be enhanced by addition of solubilizing agents such as capryl alcohol. The extract which may contain some aluminium may be treated with NaOH to precipitate trace hydroxides which are filtered off.  The caustic soda solution may then be diluted and heated to precipitate the beryllium as an insoluble hydroxide.ALSO:Beryllium is extracted from aqueous acid solutions thereof by contacting the solution with an organic phase including a mixed aryl alkyl phosphoric acid or a diaryl phosphoric acid which complexes with beryllium.  Suitable extracting agents include methyl (p-tert-octyl phenyl) phosphoric acid, di(nonyl phenyl) phosphoric acid and ethyl (p-tert-octyl phenyl) phosphoric acid. The extracting agent should be soluble in an organic diluent such as kerosene, methylisobutyl ketone or carbon tetrachloride and be substantialy insoluble in water.  The solubility in organic diluents may be enhanced by addition of solubilising agents such as capryl alcohol.  The extract which may contain some aluminium may be treated with NaOH to precipitate trace hydroxides which are filtered off. The caustic soda solution may then be diluted and heated to precipitate the beryllium as an insoluble hydroxide.
Patent GB-613908-A (GB)
Title: Improvements relating to driving connections for apparatus having relatively bodily movable parts
IPC: B41F13/00
Filed: 1944-10-17
Abstract: 613,908. Sheet delivery apparatus. STEVENS, A. H. (Miller Printing Machinery Co.). Oct. 17, 1944, No. 20066. [Classes 100(i) and 100(ii)] [Also in Groups XXIV and XXX] In apparatus comprising separate sections bodily movable towards and away from one another and having gearing which is interconnected when the sections are together and is disconnected when the sections are apart, the gearing includes a driving gear on one section and a driven gear on the other section which are in mesh when the sections are together, the driven gear being yieldingly urged towards the driving gear and mounted to swing about the axis of another gear with which it meshes. As applied to a flat-bed printing machine with a continuouslyrotating cylinder 2, and wherein the sheets are delivered between endless bands 9, 10 mounted on a frame 5 which is movable towards and away from the machine proper, the tapes are driven from a gear 4 on the cylinder 2 by a gear train 15, 16, 17, 18, 19, 21 and 25. The gears 19, 21 are coaxial on a shaft 20 on which is pivoted by ball-bearings a frame 23 carrying the gearwheel 25. Fixed to the shaft 26 of the gearwheel 25 is a roller 27, which, in operative position, rides on a bearerring 3 on the cylinder 2. A rod 30 is pivoted at one end to a lug 28 on the frame 23 and at its other end is slidable in a pivoted block 32. A spring 33 on the rod moves the gear 25 into engagement with the gear 4, and a stop 35 on the rod limits such movement when the delivery apparatus is moved away from the printing- machine. The apparatus may be used in connection with cutting or creasing machines. The movement of the frame 5 away from the printing-machine with simultaneous raising of the tapes may be effected by power means as described in Specification 549,622.
Patent GB-499648-A (GB)
Title: Improved process of hardening photographic silver halide emulsion layers and other layers containing protein
IPC: G03C1/30
Filed: 1937-07-21
Abstract: Silver halide emulsion layers and other layers containing protein are hardened by incorporating at any stage in the production or treatment of the layer an aliphatic aldehyde-carboxylic acid or a salt or halogen-free ester thereof or a substitution product containing an -OH, -CO, or -NH2 group but no halogen.  The protein may be gelatine, albumen, casein, or gliadin and may be carried on a support of glass, paper, cellulose, a cellulose derivative, or metal.  Suitable hardening agents are glyoxilic and formylacrylic acids.ALSO:Silver halide emulsion layers and other layers containing protein are hardened by incorporating at any stage in the production or treatment of the layer an aliphatic aldehyde carboxylic acid or a salt or halogen-free ester thereof or a substitution product containing an -OH, -CO, or -NH2 group but no halogen.  The protein may be gelatine, albumen, casein, or gliadin and may be carried on a support of glass, paper, cellulose, or cellulose derivative, or metal.  Suitable hardening agents are glyoxylic and formylacrylic acids.
Patent GB-887302-A (GB)
Title: Apparatus for making thread-cutting tools
IPC: B24B3/18
Filed: 1958-06-24
Abstract: 887,302. Taps. BECK, A. June 24, 1958 [July 3, 1957], No. 20222/58. Class 83 (3). [Also in Group XXIII] A screw-cutting tool 1, such as a tap, die, chaser or the like, has a starting section in which the teeth are progressively set back relative to those in a finishing section, the teeth in both sections having the same pitch a and being ground to full depth by a disc 13 (see Group XXIII).
Patent GB-951454-A (GB)
Title: Improvements relating to amplifying circuits
IPC: H01J23/30
Filed: 1960-06-09
Abstract: 951,454. Travelling wave tubes. TELEFUNKEN A.G. June 9, 1960 [June 10, 1959], No. 20231/60. Heading H1D. [Also in Division H3] An amplifier arrangement comprises a parametric amplifier the output of which is connected to the input of a travelling wave tube the delay line of which has attenuating means disposed closer to the input than to the output thereof. The input signal is fed from an aerial to a parametric amplifier 2 and thence to a travelling-wave amplifier 5 of the helix type. Attenuating device 12 is so designed that the input impedance of the travelling wave tube matches the output impedance of the parametric amplifier. A further attenuating device 11 is disposed in the middle of or towards the output end of the helix. A single attenuating device may combine the functions of 11, 12.
Patent GB-597701-A (GB)
Title: Improvements in wire mesh or like enclosures
IPC: E04H17/16
Filed: 1945-08-07
Abstract: 597,701. Animal pens &c. EDMONDS, P. J. Aug. 7, 1945, No. 20245. [Classes 5 (ii), 6 (ii) and 45] An enclosure, suitable for a poultry run, tennis court surround or the like, is constructed of side and end frame units 1 and corner units 2, each unit comprising a metal frame covered in its entirety with wire mesh and having its upper end curved inwardly, the various units being fastened together along their edges. The structure may be completed by the addition of roof members 5, each of which may include a sub-frame pivoted within a main frame so that the member may be tipped up to remove snow. One of the end frame members may include a door 8. The wire netting 10 is attached (Fig. 10) by means of tangs 11 formed on the frames, which are also provided with holes 6 to facilitate their being bolted together.
Patent GB-1178032-A (GB)
Title: Process and device for the manufacture of Chipboards
IPC: B27N3/14
Filed: 1967-05-02
Abstract: 1,178,032. Moulding chipboard. NIEDERHEINISCHE MASCHINENFABRIK BECRKER & VAN HULLEN. 2 May, 1967 [25 May, 1966], No. 20254/67. Heading B5A. [Also in Division C3] Endless chipboards are produced in a cyclically operating heatable press. An endless belt conveys the chip mat over the pressing table below the ram. The weight of the chip mat in those zones which during pressing are at the transitional region between the pressed board and the still unpressed mat is increased by up to 20% with respect to the rest of the mat. If the board consists of an inner layer of relatively coarse particles and two outer layers of finer particles with a higher glue concentration, the increase in weight may be confined to one or both outer layers; the middle layer may remain constant or may even be reduced in weight at the transitional zones. The three layers may be formed by chips from three hoppers movable to and fro along the direction of travel of the mat, the quantity of chips emerging from each of which being controlled by electric limit switches. German Specification 972,018 is referred to.
Patent GB-718325-A (GB)
Title: Sealed separable food container
Inventor: CLARKE HOUGHTON WILLARD
IPC: B65D81/38
Filed: 1952-08-12
Abstract: 718,325. Cold and heat retaining vessels. MEALPACK CORPORATION. Aug. 12, 1952, No. 20276/52. Class 64(2) [Also in Groups XVII and XXV] A resilient band 16, enclosing ribs 13 near the meeting surfaces of two double-walled sections 10, 11 of a container, Fig. 1, has its ends 20, Fig. 4, drawn together and sealed by clamping members. Thus there is formed a chamber 12 for conserving the temperature of dishes of food placed therein. The walls of the sections 10, 11 may enclose insulating material or a vacuum and the edges and middle of the band have beading 17 to match the edges of the sections. A plate 23, secured to one end of the band 16, carries a pivoted handle 27 bearing a pivoted clamp 28 which engages a hook 22 on a plate 21 secured to the other end of the band so that depression of the handle 27 draws and locks together the band ends 20. A strip of cardboard (Fig. 2, not shown) is held, with its edges in a slot 31 in the handle and a finger 32 on a pivot-bracket 24, so that tampering with the container by raising of the handle 27 is indicated by tearing of the strip between the finger and a plate 30.
Patent GB-916965-A (GB)
Title: Improvements in or relating to laminated driving belts
Inventor: GREENWOOD JAMES MERVYN WIGLEY
IPC: F16G5/16
Filed: 1958-06-25
Abstract: 916,965. Laminated driving belts. BRAMMER & CO. Ltd., H. June 9, 1959 [June 25, 1958], No. 20372/58. Class 80 (1). In a laminated driving belt of rubberized fabric or other material wherein two or more headed studs 11 are riveted across the width of the tail end of each link and " buttoned " through two or more parallel rows of slotted openings in the superposed links, the tail end of each link is stiffened laterally by means such as a metal plate 16. As shown, a ribbed plate 16 having chamfered or rounded edges is held against the tail of each link by shoulders on two studs 11 riveted thereto. For a belt of threelink thickness the two studs riveted to the lowermost link 1, Fig. 2, engage openings 9, 6, respectively, in the two superposed links, the fastening being completed by slotted plates 18 which are fitted under the heads of the studs. The pairs of openings 9, 6 in each link communicate with elliptical stud-insertion openings 7 by slits or slots 5, 8. The rear edge of each plate 18 is preferably turned up slightly. The plates 18 may be dispensed with, or be replaced by slotted rawhide or other washers, Fig. 7 (not shown). For a belt of four-link thiekness each link 1b, Fig. 9, has three pairs of stud-engaging openings 25, 26, 28 communicating through slots with stud-insertion openings 24, 27. The links shown have converging side edges 2, a straight tail edge 3 and a waved front edge 4. The edges 2 are also tapered in cross-section. In a modification each link has three studs across its width. Specification 490,602 is referred to.
Patent GB-896015-A (GB)
Title: Perfluoroalkyl-substituted aliphatic acids and derivatives thereof
IPC: C07C53/23
Filed: 1958-06-25
Abstract: The invention comprises polymers or copolymers having recurring units of the formula <FORM:0896015/IV (a)/1> where Rf is a perfluoroalkyl or perfluorocycloalkyl group having 4-12 carbon atoms, R is a straight-chain alkylene radical having 1-12 carbon atoms and n is 0 or 1.  These polymers are prepared by homopolymerizing or copolymerizing inter se or with other monomers and low polymers the vinyl or allyl esters of the acids RfCH2RCH2COOH.  In examples vinyl 11-(perfluorooctyl)-bendecanoate is emulsion homopolymerized and is copolymerized with maleic anhydride.  The polymers are used for treating fibrous materials (see Group VIII).  The homopolymerization uses potassium persulphate as catalyst, and dodecylamine hydrochloride or potassium (N-ethylperfluorooctanesulphonamido) acetate as emulsifier.  Part of the water is advantageously replaced by trifluoroethanol or acetone.  The copolymerization is effected in toluene using benzoyl peroxide as catalyst.  Specification 867,279 is referred to.ALSO:The invention comprises the acids of formula RfCH2RCH2COOH, where Rf is a perfluoroalkyl or perfluorocycloalkyl radical having 4-12 carbon atoms, and R is a straight-chain alkylene group having 1-12 carbon atoms; and their carboxyl-linked derivatives, which are defined as derivatives formed by replacement of the hydrogen ion by another cation, such as salts and complexes, and derivatives formed by formal dehydration reactions, such as the acyl halides, anhydrides, amides, amidines, nitriles, hydrazides, peroxides, esters and orthoesters.  The acids of the invention can be prepared by the reductive dehalogenation of the corresponding acids having a chlorine atom on the carbon atom adjacent to the methylene group connected to Rf, e.g. the acids obtained by the desulphonylative addition of RfSO2Cl to a terminally unsaturated aliphatic carboxylic acid; or the chloro-acids can be dehydrochlorinated and the resulting unsaturated acids reduced, e.g. by hydrogenation. Alternatively RfI can be added to an unsaturated aliphatic acid and the resulting iodo-acid catalytically deiodinated. Specified salt-forming cations are metals such as Na, K, Ca, Al, Zn, Cu, Fe, Mn and Zr, and ammonium ions and alkyl-ammonium ions such as ethyl-, dimethyl-, trimethyl- and tetramethylammonium and piperidinium; chromium complexes may also be formed.  The organic derivatives of the acids are prepared by standard methods. Specification 867,279 is referred to.
Patent GB-203939-A (GB)
Abstract: 203,939. Royce, F. H., and Rolls- Royce, Ltd. Oct. 26, 1922. Mechanical interrupters in which a cam a<4> on the shaft a<3> oscillates a lever c pivoted on a pin c<1> to interrupt the primary ignition circuit have the lever c earthed or connected to the casing by a blade spring d which is screwed at one end d<1> to the lever c and at the other end by a screw e<1> and anchored nut e against an internal boss a<8> in the interior of the casing a. The nut e is in the form of a metal strip secured at one end by a screw e<2> to a boss a<10>, and at the other end overlapping the end of the spring d the lower edges of the spring and nut d, e resting on a shoulder a<9> formed in the boss a<10>. The lever c is retained on the pivot pin c<1> by a blade spring f pivoted at f<1> having a depression f<2> which snaps on to a projection f<3> on the pivot pin. The hole in the spring d for the accommodation of the screw e<1> may be slotted at d<2>, Fig. 3, so that by moving aside the spring f and slackening the screw e<1> the lever c together with the spring d may be lifted off the pin c<1>.
Patent GB-879719-A (GB)
Title: Automatically acting valve for the transfer of liquid between gaseous fluid zones at differing pressures
IPC: F16T1/14
Filed: 1957-06-28
Abstract: 879,719. Liquid-releasing apparatus for gas systems. WESTINGHOUSE BRAKE & SIGNAL CO. Ltd., SIMMONS, A. W., and WASHBOURN, J. June 12, 1958 [June 28, 1957], No. 20448/57. Class 64(2) [Also in Groups XXVIII and XXXIV] In a compressed-air braking-system, water from an air reservoir 15 (passed through a filter 18 and a chamber 17) is released to atmosphere through a port 21 by reciprocation of a valve member having a stem 24 and a plug 25 between a small piston 22 and a large piston 23. To the end face of the piston 23 is applied a fluctuating pressure (from a point between the compressor and unloader valve or from a governor) and when a pressure equal to the reservoir pressure is applied, the valve member moves to the left because of the difference of piston areas until the piston 22 leaves its bore 19 and enters the chamber 17. Water then enters the space 26 around the stem 24. When the pressure on the large piston 23 drops, the valve member moves back to the position shown, passing through an intermediate position in which the space 26 is cut off from communication with both the chamber 17 and the outlet 21 by the piston 22 and the plug 25 respectively. In a modification Fig. 2 (not shown), the piston 22 moves into a tubular guide in the chamber 17, the outlet 21 has a perforated plug and there is an orificed plate adjacent the end face of the large piston 23 to reduce the velocity of the valve member. The Provisional Specification describes also a valve member which is spring- loaded. Refrence has been directed by the Comptroller to Specification 629,592.
Patent GB-202632-A (GB)
IPC: C09B9/00
Filed: 1923-08-11
Abstract: In the processes described in the parent Specification and Specification 202,630 for the production of ethereal salts of leuco vat-dyes, the chlorsulphonic acid or chlorsulphonate employed is replaced by fuming sulphuric acid or sulphuric anhydride.  Examples are given in which leuco indigo is treated with fuming sulphuric acid, or sulphuric anhydride, in presence of dimethylaniline and chlorbenzene, air being excluded.