baber/WOPTO huggingface dataset:
Patent GB-410358-A (GB)
Title: Improvements relating to the decortication or stripping of hemp and like fibrous-stalks
IPC: D01B1/22
Filed: 1933-07-29
Abstract: 410,358. Decorticating hemp stalks. GENNARO, U., 38, Via Amedeo Peyron, Turin, Italy. July 29, 1933, No. 21359. Convention date, July 30, 1932. [Class 120 (i).] In the decortication of hemp and like stalks which are fed endwise side by side to disintegrating or crushing rollers and successively to subdividing rollers which split the stalks longitudinally and to a series of rollers of decreasing pitch adapted to break the woody material into chips, the stalks are fed in staggered relationship to crushing rollers which stiffen the stalks then to dividing rollers which split the stalks longitudinally in the known manner and then to a set of skeleton or cage rollers having blades of decreasing pitch for bending the stalks alternately in opposite directions. The stalks 1, Fig. 1, are passed successively through feed rollers 2, which may be smooth or longitudinally fluted, smooth crushing rollers 3, knife rollers 4 having annular ribs 5<a> which divide the stalks into longitudinal strips and then through pairs of open cage drums 5, 5<1>, 5<2>, Figs. 1 and 4, having blades 6, 61, 6<2> which break the stalks in a transverse direction while permitting discharge of the pieces or chips so formed. The pitch of the blades decreases in succeeding pairs of drums while inclined baffles 9 and a shaker or shakers comprising a shaft 10 having staggered teeth 11 are provided to expel the chips.
Patent GB-1474236-A (GB)
Title: Apparatus for metering active electrical energy
IPC: G01R21/127
Filed: 1974-05-15
Abstract: 1474236 Pulse modulation GENERAL ELECTRIC CO 15 May 1974 [17 May 1973] 21475/74 Heading H4L [Also in Divisions G1 and G4] In a power measuring system (see Division G1) products of current and voltage are formed by producing a pulse train, width modulated by one variable and amplitude modulated by the other. As shown in Fig. 14, the width modulator includes a source of triangular waveform of frequency 10 kHz forming one input to a comparator A2. On change over of the comparator output, a switch S1 changes the polarity of one input to an integrator A1, C1. If the input variable V x =0, the capacitor C1 is charged and discharged at equal rates and the resulting integrated voltage oscillates about zero, producing a 1 : 1 mark space ratio output from the comparator A2. Any input V x  unbalances the charge and discharge currents to C1, resulting in a shift in the mean level of the integrator output, which modulates the width of the comparator output pulses, although the average frequency remains at 10 kHz. The comparator output also drives an analogue switch S2 which switches the output V z  between ŒVy, which is the second input variable to the multiplier. This "product" pulse train is summed with other "products" and filtered to provide a D.C. signal V F , representing total power. This D.C. is converted to a pulse train as shown in Fig. 27. When the voltage across integrator capacitor C 5  reaches a predetermined level, monostable 56 provides a controlled pulse of width T R  to a unit 62 which delivers a current of value I R  for that time to discharge the capacitor C 5 . Since input current I F  is still flowing, the charge removed during T R  is (IR - I F )T R . After T R , the capacitor charges at a rate determined by the input current I F  (i.e. V F /R 23 ). The charge replaced is thus equal to I F T F  where T F  is the time needed to recharge the capacitor to the threshold voltage once more. Since these charges must be equal, the monostable pulses appear at a rate determined by the period T F +T R =(I R T R )/(I F ).
Patent GB-639149-A (GB)
Title: A process for the manufacture of dl-3,4-(2-keto-imidazolido)-tetrahydrofurane-(2)-n-valeric and intermediates therefor
IPC: C07D491/04
Filed: 1947-08-07
Abstract: dl - 3 : 4 - (21 - Keto - imidazolido) - tetrahydrofurane-(2)-n-valeric acid of the formula <FORM:0639149/IV (b)/1> is prepared by hydrogenating the compound <FORM:0639149/IV (b)/2> in the presence of a hydrogenation catalyst, and shows vitamin activity.  The starting material is obtained from 4-methyl-5-imidazolone-(2)-carboxylic acid ethyl ester which is decarboxylated to 4-methyl-imidazolone-(2) and converted into 4-methyl-5-imidazolone-(2)-e -keto-caproic acid ethyl ester as in Specification 21524/47 as open to inspection under Sect. 91(4). From this is prepared the N : N1-diacetyl-compound which is brominated in the 4-methyl group with N-brom-succinimide; the bromine atom is then replaced by an acetoxy group using silver acetate and the double bond saturated by catalytic hydrogenation. Alkaline hydrolysis of the product splits off the acetoxy group and hydrolyses the ester group to give the desired starting material.
Patent GB-771981-A (GB)
Title: Improvements in record envelopes
IPC: B65D85/57
Filed: 1955-07-27
Abstract: 771,981. Gramophone-record envelopes. STAAR, M. J. H. July 27, 1955 [July 27, 1954], No. 21737/55. Class 146(2). The or each window opening of gramophone record envelope is extended towards the bottom 3 of the envelope from adjacent the ends of the diameter d of the opening parallel to the bottom of the envelope. As shown, the opening has a semi-circular portion 4 and an extended area 5 bounded by curves 6 starting from the ends of diameter d. The curves do not need to be geometrically identical. This shaping of the window prevents the record from catching on the envelope.
Patent GB-601305-A (GB)
Title: Improvements in or relating to monofilament synthetic yarns, strands or strips and fabrics woven therefrom
IPC: D03D15/00
Filed: 1943-12-28
Abstract: A monofilament yarn, strand or strip consisting essentially of polyvinylidene chloride or of a copolymer thereof and another polyvinyl compound has a concavo-convex or plano-convex cross-section.  The vinyl compound may be a halide, e.g. vinyl chloride, a lower aliphatic ester of acrylic or methacrylic acid, e.g. ethyl acrylate or methyl methacrylate, styrene or nuclear substituted chlorine derivatives of styrene, e.g. m-chlorstyrene. The polymerized material in its plastic condition is mixed with suitable plasticisers or stabilisers, and extruded into filaments, which are then drawn and preferably hardened and cooled in a water bath. Pigments or dyes may be incorporated with the resin.  The monofilament yarns may be woven into fabrics, the convex surface of the yarns being positioned preferably on the outer side of the fabric.
Patent GB-1463376-A (GB)
Title: Process for the manufacture of free-flowing pulverulent rubber- filler mixtures
IPC: C08L23/00
Filed: 1974-05-16
Abstract: 1463376 Rubber-filler mixtures CHEMISCHE WERKE HULS AG 16 May 1974 [19 May 1973] 21759/74 Heading C3P A process for the manufacture of a free-flowing pulverulent rubber-filler mixture, optionally containing plasticizer oil, by combining an aqueous suspension of a filler with a rubber solution, converting the unstable mixture thereby produced into a stable emulsion and precipitating and drying the mixture, is characterized in that a solid filler is suspended in water, a rubber solution is introduced into this suspension with the formation of an unstable pseudo-emulsion, this unstable pseudo-emulsion is converted into a stable, aqueous emulsion having a pH between 0À1 and 7 by the addition of a mixture of a quaternary ammonium salt with a non- ionic, water-soluble, polymeric colloid while stirring, this stable emulsion is introduced into hot, alkaline water containing alkali metal silicate solution to precipitate a rubber-filler mixture in a finely divided form with simultaneous removal by distillation of the rubber solvent, and the precipitated rubber-filler mixture is separated from water and dried. The filler may be carbon black or silica. Suitable rubber polymers are polybutadiene, copolymers of butadiene and styrene, and EPM and EPDM polymers. The quaternary ammonium compounds preferably have the formula (NR 4 )<SP>+</SP>X<SP>-</SP> wherein R is alkyl or aralkyl with up to 20 carbon atoms and X is halogen or alkyl sulphate of which numerous examples are given. The quaternary ammonium salt may be used in an amount 0À01-2% by weight based on the rubber solution. Suitable non-ionic water-soluble polymeric colloids are methylcelluloses, hydroxyethyl celluloses, hydroxypropyl methylcelluloses, hydroxyethyl methyl celluloses and carboxy methylcelluloses which are used in an amount 0À001-0À5% by weight based on the rubber solution. The plasticizer may be an aromatic, naphthenic or paraffinic hydrocarbon. Preferred alkali metal silicate solutions are sodium silicate solutions having a molar ratio of Na 2 O to SiO 2  of 2 : 1-1 : 4. The specific Examples 1 and 4 describe the production of rubber-filler mixtures wherein the rubber is polybutadiene prepared using butyllithium as catalyst and having a vinyl group content of 35% and the filler is carbon black using cetyl-trimethylammonium chloride, methyl cellulose and optionally plasticizer oils whilst Examples 5 and 6 describe the production of rubber-filler mixtures wherein the rubber is block copolymer of butadiene and styrene or an EPDM rubber respectively and the filler is carbon black using cetyl-trimethylammonium chloride and hydroxypropyl methylcellulose (5) and methyl cellulose (6).
Patent GB-945843-A (GB)
Title: Improvements in or relating to apparatus for recording and indicating the instantaneous position of a moving object
IPC: G03B15/16
Filed: 1960-06-21
Abstract: 945,843. Photographically recording object positions: optical systems. CONTINENTAL ELEKTROINDUSTRIE A. G., [trading as CONTINENTAL ELEKTROINDUSTRIE A.G. ASKANIA WERKE]. June 21, 1960 [June 25,1959], No. 21761/60. Headings G2A and G2J. In the apparatus described in Specification 816, 613 wherein as shown a gimbal mounted mirror 2 directs ultra-violet light from a mercury lamp 1 on to a carrier 3 having a map 4 and ultraviolet sensitive material 5 so that the instantaneous position of an object is recorded, there is provided a lens system 18 chromatically corrected for ultra-violet. Preferably the system comprises a positive lens of lithium fluoride connected between negative lenses of quartz. A filter 17 permits the passage of only blue to ultra-violet light.
Patent GB-642324-A (GB)
Title: Dry shavers
IPC: B26B19/04
Filed: 1947-08-08
Abstract: 642,324. Dryshavers. REMINGTON RAND, Inc. Aug. 8, 1947, No. 21840. Convention date, Aug. 3, 1940. [Class 131] In a dry shaver of the type having an outer and an inner cutter each of which is slotted to provide cutter bars and at least one of which is reciprocated relatively to the other, the shearing portion of the outer cutter is thinner than the adjacent combing portions and is formed with spaced rows of rectangular perforations defining cutter bars having cutting edges extending transversely across the shearing portion, the cutting edges of each row being offset with regard to those of an adjacent row and co-operating with cutter bars extending obliquely across the inner cutter at an angle corresponding to the offset of the cutting edges of the outer cutter. As shown the stationary outer cutter 20 comprising a curved shearing portion having cutter bars 34, lateral tangential portions with tapering combing bars 36, and having reinforcing corrugations 30 at each end, is stamped from flat steel stock and later subjected to bending and to heat-hardening treatment. The longitudinally reciprocating, hollow, cylindrical inner cutter 40 is concentric with the curved shearing portion of the outer cutter toward which it is urged by spring-pressed balls 42 and is provided with equally spaced cutter bars 46 inclined to a line at right angles to the axis of the head at the same angle as the angle of offset of the bars 34, 36 and spaced farther apart than the bars 34, 36.
Patent GB-985829-A (GB)
Title: Tamper-proof container device
IPC: B65D49/04
Filed: 1962-06-06
Abstract: 985,829. Non-refillable containers. PERNOD. June 6, 1962 [June 6, 1961], No. 21879/62. Heading B8D. A stopper for a non-refillable container comprises a tubular member insertable into the neck 12 of the container, its recess being divided into two channels 6 and 7 by a partition 8, each channel having a valve member 9 and 10 respectively, at its base which by means of gravity closes the channel when the container stands upright and uncovers it when the container is in a pouring position, means in each channel for limiting the displacement of the valve member, and means overlying the valve members for preventing the members being tampered with but allowing the free flow of the contents from the container. The tubular member comprises a tubular body 1 connected by a flange 3 to a cylindrical member 2 which has a bottom 2a formed with apertures 4 and 5 on which seat ball valves 9 and 10. A cross wall 11 partially covering the circular crosssection of the casing 2 prevents the balls escaping when the container is inverted and together with the flange 3 forms a baffle to prevent insertion of a tool into the device to dislodge the balls. Bars 13 restrict lateral movement of the balls. A compressible sleeve 14 surrounds the tubular body 1 being spaced therefrom at its upper end to accommodate a screw cap 16 covered by a tearable capsule 17 which is surrounded by a jacket 15. In another embodiment the tubular member is adapted for direct insertion into the neck of a bottle and has at its  upper end an outer flange for engaging the bottle neck, its lower end being open to receive a plastics moulded insert member comprising a circular base with two apertures for seating ball valves, a diametric partition wall extending upwards from the base and three vertically-  spaced baffle elements, the base being forcibly  engaged in a groove in the lower end of the tubular member.
Patent GB-1312754-A (GB)
Title: Wave guide
IPC: H03D9/06
Filed: 1971-04-19
Abstract: 1312754 Waveguide directional couplers SFIM SOC DE FABRICATION D'INSTRUMENTS DE MESURE 19 April 1971 [23 Sept 1970] 22806/71 Heading H1W [Also in Division H4] A waveguide directional coupler includes a waveguide 1 having opposed slots AB and CD- each having a length equal to the wavelength in air of a wave propagated in the waveguidecoupling to parallel waveguides 2 and 3, respectively, waveguide 2 having a reflecting termination 2b and waveguide 3 having an absorbing termination 3b. If energy flows from end 1b to end la of waveguide 1, equal fractions F4 and F5 are tapped off by waveguide 2 and 3 and flow towards the ends 2a and 3a of the waveguides 2 and 3. If energy flows from end 1a to end 1b of waveguide 1, the fraction which is tapped off by waveguide 3 and flows to end 3b is absorbed there, while the fraction which flows to end 2b of waveguide 2 is reflected, such that a fraction F2 flows to end 2a of the waveguide 2, while a fraction F3 passes into waveguide 3 and flows to the end 3a, the waves F2 and F3 having a phase difference of about 100 degrees, which may be varied by adjustment of a variable load 9 at the reflecting end of the waveguide 2, matching studs 7 and 8 being disposed in the neighbourhood of the slots AB and CD. A two crystal duplexer and mixer may, as shown, be formed by mounting crystals 5 and 6 at the ends 2a and 3a of the waveguides 2 and 3, whereby a phase shift exists between the waves received by the two crystals from a transmitter connected to end 1a of the waveguide 1.
Patent GB-1153281-A (GB)
Title: Process for Production of Building Slabs or Panels
Inventor: TRAUTVETTER ROBERT
IPC: C04B28/14
Filed: 1966-05-18
Abstract: 1,153,281. Moulding building elements. DEUTSCHE BAUAKADEMIE. 18 May, 1966, No. 22094/66. Heading B5A. [Also in Division E1] Plaster building panels having porous cores are produced by a moulding process comprising forming a non-porous layer of plaster slurry in a mould, covering said layer before it sets with a porous layer of plaster, rupturing the film surface formed on said porous layer during setting, e.g. by a metal skimming bar, and applying thereto a layer of the non-porous slurry of plaster. A glass fibre fabric or fleece may be located in the non-porous top and bottom layers. Small quantitites of urea formaldehyde, polyvinyl acetate and cellulose may be added to the plaster. The mould may be lined with PVC foil bonded with glass fibre fleece.
Patent GB-723828-A (GB)
Title: Improvements in and relating to means for controlling reducing valves or pressure regulators provided with adjusting means
Inventor: BAILEY DONALD
IPC: G05D16/10
Filed: 1952-09-03
Abstract: 723,828. Fluid-actuated valves. BAILEY & CO., Ltd., Sir W. H. Aug. 26, 1953 [Sept. 3, 1952], No. 22119/52. Class 135. In a pressure regulator or a pressure reducing valve which is opened by a spring and closed by inlet or outlet pressure acting upon a diaphragm or other pressure-responsive element, the spring, in addition to its normal slow adjusting means, is provided with means to effect rapid adjustment thereof. As shown, in the loading of the spring 4, Fig. 1, is rapidly adjusted by the depression of a lever 11 pivoted on a cap 8 screwed on to the spring cover 5, the lever coacting with a spindle 14 carrying the spring abutment plate 6. Normal adjustment of the spring loading is effected by rotation of the cap 8 which engages a shoulder on the spindle 14. As shown in Fig. 2, rapid adjustment of the spring loading is effected by rotation of a coarse pitch screw-threaded hollow member 19 which coacts with a screw-threaded bore 18 in the spring casing 5. Normal adjustment of the spring loading is effected by rotation of a rod 21 having a fine pitch which coacts with the threaded bore of the member 19 and abuts the spring plate 6.
Patent GB-766475-A (GB)
Title: Improvements in or relating to devices for closing the flaps of cartons, more particularly in packaging machines
Inventor: DAVIS EDWARD JOHN ALBERT
IPC: B65B7/22
Filed: 1954-07-29
Abstract: 766,475. Closing cartons. LONDON RUBBER CO., Ltd. July 28, 1955 [July 29, 1954], No. 22205/54. Class 94(1). Carton-closing mechanism comprises a chain conveyer 10 fitted with platforms 11 having upstanding tabs 15 by which cartons 12 are supported and moved in succession between fixed plates 13 which fold and tuck in their end flaps 14. Each plate comprises a plane base portion 16, and its cross-section varies progressively from that shown in Fig. 2 to that shown in Fig. 7. The parts 17, 18 of each plate define a twisted groove which receives the lip portion 20 of each flap and co-operates with a tapered bar 21 to fold the lip portion through 120 degrees as shown in Figs. 2-4. The part 17 terminates at point D, the part 18 tapers to zero width between the points D and 25 and the part 23 of the plate which engages the portion 24 of the flap is twisted upwardly between the points D and E so that the flap is folded upwardly and the lip 20 tucked into the body of the carton as shown in Figs. 5-7.
Patent GB-267058-A (GB)
Title: Process for preserving fruit juices and other liquids
IPC: A61L2/238
Filed: 1925-09-05
Abstract: 267,058. Matzka, W. Sept. 5, 1925. Sterilizing fruit juice, milk, meat extract, &c. - Liquids are sterilized by bringing them into simultaneous contact with gold and aluminium in electrical connection at a temperature below 60‹ C., preferably 30-55‹ C. The liquid may be caused to flow between the two metals which may be independently heated, preferably to different temperatures. The metals may be connected to an electric current source, the gold forming the cathode, and a gentle current passed through the liquid. The electrodes may be hollow, and hot water or steam passed therethrough. The temperature employed is varied according to the liquid treated, but is always below normal pasteurization temperatures. A suitable form of apparatus is described in Specification 267,377. The process may be applied to fruit juice, prepared from fruit which has been treated by sterilizing means such as solutions of sulphur dioxide, hydrogen peroxide, formaldehyde, &c., or by disinfecting-gases, or by spraying with water on conveyers, and then washed with cold sterile water, before the juice extraction. The higher the albumen content and the acidity of the juice, the lower is the temperature employed in the treatment. If the treated juice is bottled, or contains pulp, it may be subjected to a final short pasteurization at a lower temperature than usual. The process may also be used for the sterilization of milk, or meat extract. The Provisional Specification describes the pasteurization of slightly warmed fresh fruit juices or other liquids by gentle electrolytic treatment, e.g. by passage between electrodes, preferably of different metals, fed with current, or by treating with a galvanic couple. In an example, the juice is passed to remove pulp &c., through metal sieves 2 of different mesh, kept clear by brushes mounted on a rotating shaft 3 which also carries a worm 6 for removing the pulp from the apparatus. The juice next enters a copper pipe 11, passing out through an aperture 12 therein to the space 13 between the pipe 11 and an aluminium pipe 18, where it is subjected to the electrolytic treatment, finally re-entering the upper end of pipe 11 through aperture 14 and being withdrawn past thermometer 25 to a vessel C. The pipe 11 has a number of conical copper plates 15 which may be gilt all over or may have gold wires at their edges 16. The pipes 11, 18 are respectively connected to negative and positive poles of a battery 22. The pipe 18 has an iron jacket 20 through which steam or hot water is passed to heat the apparatus. Insulating members 17, 19 are provided between the pipes and the jacket. The juice may be passed repeatedly through the apparatus, and may finally be drawn off from vessel C, through an asbestos filter, to sterile vessels. If the juice is not quite clear, a final short pasteurization may be included.
Patent GB-833809-A (GB)
Title: Improvements in or relating to dyeing animal fibres and compositions therefor
IPC: C09B35/227
Filed: 1957-07-12
Abstract: Animal fibres, especially live hair but including wool, feathers, bristles and fur, are dyed with an aqueous solution of pH7-11 containing an azo dye having at least one disulphide linkage and a water-soluble reducing agent selected from aliphatic mercapto carboxylic acids such as thioglycollic and thiolactic acids, thiourea dioxide and alkali metal borohydrides, sulphites and hydrosulphites. The aqueous solution may also contain alkaline compounds such as ammonia, ethanolamine or salts of weak acids, and the usual adjuvants such as polyalcohols, ether alcohols, ketones, urea and thickeners. Dyeing is preferably effected at a temperature below 50 DEG  C.  An after-treatment with an oxidizing agent such as hydrogen peroxide, ammonium persulphate, sodium perborate or atmospheric oxygen may be applied.  Examples are given.  Specification 377,348 is referred to.