baber/WOPTO huggingface dataset:
Patent GB-503151-A (GB)
Title: Improvements in and relating to tobacco pipes
IPC: A24F1/20
Filed: 1937-10-01
Abstract: 503,151. Tobacco pipes. SEMONSEN. 0. C. Oct. 1, 1937, No. 26652. [Class 130] A hook 25a formed on a bushing 24 inserted in the mouthpiece 21 withdraws a folded pipe cleaner 10 from a chamber 20 in the stem when the mouthpiece is removed. Communication between the chamber 20 and the bore 23 in the mouthpiece is maintained either by a slot or by a central passage in the bushing. The bowl is provided with a separate or integral false bottom 18. Reference has been directed by the Comptroller to Specifications 19357/91, 73/00, [both in Class 130], and 384,457.
Patent GB-203548-A (GB)
Title: Improvements in or relating to ball bearings
IPC: F16C33/42
Filed: 1922-10-03
Abstract: 203,548. Bambridge, W. G. Oct. 3, 1922. Ball bearings.-In a ball bearing wherein the balls 3 are arranged in a spiral series of holes 7 in a cage 2, the holes are reduced in diameter at their inner ends and a wire 8 is arranged spirally in a groove around the cage so as to overlap the holes at their outer ends and retain the balls in position. A wire may be arranged on both sides of the holes. The cage is mounted between a housing 1 and an inner sleeve 4, washers 5 and spring-rings 6 being provided to hold the cage and sleeve in position. To take end thrust, balls 14 arranged in a cage 15 are provided between the ends of the sleeve 4 and the washers 5. The bearing is mounted in a yoke 18 by screws 19 and a projection 17 fitting in a recess 16 in the housing.
Patent GB-249429-A (GB)
Title: Improvements in or relating to pianofortes
IPC: G10C3/04
Filed: 1925-10-24
Abstract: 249,429. Collen, R. H., and Broadwood & Sons, Ltd., J. Oct. 24, 1925. Pianoforte framing; soundbcards; wrest-planks; cases.-A wooden back for a pianoforte, of the kind having no bracings, comprises vertical side members a connected by top and bottom horizontal members b, b<1>. The wrest-plank e is glued to the front of the member b, and strengthening strips c, c<1> are glued to the rear of the members b, b'. Flush with the frame and at a short distance beneath the member b is glued a horizontal member f to which the top member h of the soundboard frame is glued. The side and bottom members of the soundboard frame are glued to the side and bottom members a, b<1> of the back. The rear face of the soundboard is also provided with two corner bars, and with the usual diagonal belly-bars k. A hand-rail may extend across the back at the midheight of the members a, or inwardly projecting pegs d may be provided in lieu. The invention is applicable, to horizontal pianofortes. According to the Provisional Specification, bars may be provided in the corners of the back.
Patent GB-891801-A (GB)
Title: Improvements in reciprocating electric motors
IPC: H02K33/14
Filed: 1959-08-05
Abstract: 891,801. Reciprocating motors. NOWAK, K. M. Aug. 5, 1960 [Aug. 5, 1959], No. 26728/59. Class 35. A reciprocating electric motor for use in percussion tools (Fig. 1), pumps and compressors (Fig. 2, not shown), hammers, saws, chisels, drills, polishers, vibrators, &c. has a reversing switch frictionally operated by the reciprocating member at the commencement of each return stroke, and the energizing windings are so arranged and interconnected that the current is substantially zero as the switch operates. Annular stator members 3, 4 have common windings 5, 6, with a few turns tapped off at 5a, 6a to provide supplementary windings 11, 12, common to both, and individual windings 7, 8 and 9, 10 respectively, all wound in the same sense. Ferromagnetic core member 15 slides on guide rod 2 from a position inside one stator to a position inside the other, the spacing being such that it is always substantially under the influence of both stators. Springs 23, 24 hooked on to tube 18 affixed to the core bias core to its central position as shown. Switch arm 25, in frictional contact with tube 18, connects terminals 30 and 31 or 32 (Fig. 4), upon right- or left-handed motion respectively, in the former case the mains 33 energizing common windings 5, 6, individual windings 9, 10 and supplementary winding 11, the last paralleling and thus shorting out individual windings 7, 8 by virtue of its few turns. Thus cone is attracted to right by coils 5, 6, 9, 10, the mains current in coils 5, 6 setting up currents in opposition thereto in the circuit of coils 7, 8, 11 on stator 3, so that at maximum traverse it switches over at near zero current. Upon reversing, common coils 5, 6, individual coils 7, 8 and supplementary coil 12 are energized, coils 9, 10 being shorted by coil 12. The frequency of oscillation is mains independent and varies as the spring tension, core inertia, supply voltage, &c. In modification, the windings may be wired generally in parallel (Fig. 5, not shown), may be reduced in number, or they and/or stator members may be multiplicated, using appropriate multiple switches. The cone may be fixed to a reciprocating shaft, particularly for pumps, and springs 23, 24 may be replaced by helical buffer springs (Fig. 2, not shown), compressed air, or a cantilever system (Fig. 6, not shown). Ventilation ducts may be provided.
Patent GB-674314-A (GB)
Title: An umbrella
IPC: A45B19/06
Filed: 1950-11-02
Abstract: 674,314. Umbrellas. WUSTER, H. Nov. 2, 1950 [Nov. 10, 1949], No. 26759/50. Class 134. The ribs of a folding umbrella are given an initial opening bias by a convex steel disc 5 clamped to the crown of the stick and bearing resiliently on projections 4 on the inner sides of the ribs.
Patent GB-778182-A (GB)
Title: Improvements relating to the translation of electrical signals
Inventor: JAMES IVANHOE JOHN PENFOUND
IPC: H04N7/01
Filed: 1953-09-29
Abstract: 778,182. Television. ELECTRIC & MUSICAL INDUSTRIES, Ltd. Sept. 29, 1953, No. 26813/55. Divided out of 778,179. Drawings to Specification. Class 40 (3). In a colour television system in which threecolour field sequential signals are converted into signals of the simultaneous type by reproducing on separate picture-reproducing tubes intermediate images of the different colour fields and then scanning each image by means of individual camera tubes to generate continuous trains of signals, the intermediate images are reproduced with vertical line scanning and the camera tubes are operated with horizontal line scanning. An advantage of effecting the line scanning of the " reading " and " writing " beams at righ angles is a reduction in the beat patterns which result when the two scanning directions are parallel and the number of lines in each field of the sequentially produced signals differs from that employed for the camera scanning. In the arrangement described one of the camera tubes produces a luminance type signal consisting of suitable proportions of the three (Red, Green and Blue) component fields and suitable for the reproduction of a monochrome picture by black/ white receivers whilst the other two camera tubes produce signals representative of the Red and Blue signals respectively. A monitor tube operating on the field sequential principle is also provided.
Patent GB-1131751-A (GB)
Title: Seat assembly
IPC: A47C5/12
Filed: 1966-06-16
Abstract: 1,131,751. Upholstered seats. COACH & CAR EQUIPMENT CORP. 16 June, 1966 [11 April, 1966], No. 26830/66. Heading A4M. A seat comprises a rigid base 11 with a peripheral flange 20, an overlying padding layer 12 e.g. polyurethane foam, a fabric cover 13 having a peripheral portion 22 turned over the flange 20, and a channel section strip 24 permanently deformed to engage over the turned over portion 22 and the flange 20 around the entire periphery of the base 11, strip 24 having inwardly directed protrusions or barbs (32, 33) which hold the cover against the flange. The cover may be adhesively secured to the flange 20. Alternatively the flange 20 may have a roughened or toothed surface (45) engaging the cover. Alternatively (Figs. 7, 8), the flange 20 may have a turned over end (35 or 36) defining a shoulder which co-operates with a protrusion (32) to prevent slip of the cover. A ventilation opening (42) extends completely through the seat. The strip 24 may be adhesively secured to the turned over position of the cover 13.
Patent GB-744395-A (GB)
Title: Chloroanthraquinone trisulphonic acids
IPC: C07C309/38
Filed: 1953-10-01
Abstract: The invention comprises 2-chloroanthraquinone 3 : 5 : 7- and 3 : 6 : 8-trisulphonic acids, and a method of preparing them by sulphonating the corresponding 3 : 7- and 3 : 6-disulphonic acids with excess of sulphur trioxide in presence of a mercury salt. Examples are given of the sulphonation by this method of each of the disulphonic acids referred to and of a mixture of the two. The products when chlorinated with nascent chlorine give 1 : 3 : 6 : 7-tetrachloroanthraquinone.
Patent GB-1454574-A (GB)
Title: Quenching melt spun filaments
IPC: D01D5/092
Filed: 1974-06-18
Abstract: 1454574 Quenching filaments E I DU PONT DE NEMOURS & CO 18 June 1974 [18 June 1973 18 April 1974] 26983/74 Heading B5B Filaments from a spinning pack are passed successively through zones of steam, non-condensing inert gas (i.e. a gas inert to the material of the filament and which does not condense at the temperatures and pressures existing in the zone of said gas) and air immediately after leaving the spinning pack. The inert gas, preferably nitrogen, amounts to 5-20% of the total volume of the gas and air. Filaments 1 from a spinning pack 2 surrounded by a heating block 3 are extruded into a steam blanketed first zone 4 supplied with steam from 5, then cooled through a quench box 6 having a zone 9 supplied with the inert non-condensing gas through 11 and then through a zone 10 supplied with air at room temperature from 7, the air passing through a perforated metal screen, tubes which surround the bundle. In zone 10 the air is supplied at a rate equal to the rate at which quiescent air would be aspirated by the moving filaments. The quenching process decreases the need to remove oxidized polymer deposits from the spinneret face.
Patent GB-697802-A (GB)
Title: Improvements in and relating to oven safety appliances
Inventor: BROWN JOSEPH
IPC: F24C15/16
Filed: 1950-11-06
Abstract: 697,802. Hollow-ware. NORTH EASTERN SCIENCE SUPPLIES, Ltd. Dec. 17, 1951 [Nov. 6, 1950], No. 27084/50. Class 66 [Also in Group XI] An oven shelf or baking pan c rests on projections b along the sides of an oven and distance pieces d at the rear of the pan engage the projections supporting the next pan above. In the case of the top pan the projections d engage a convenient part of the oven. A handle g which may be of heat insulating material, prevents the pan being inserted back to front and assists in withdrawing it.
Patent GB-1536125-A (GB)
Title: Engine ignition with spark advance
IPC: F02P5/155
Filed: 1975-11-25
Abstract: 1536125 Ignition systems ELTRACORP 25 Nov 1975 [25 Nov 1974] 27156/78 Divided out of 1536124 Addition to 1442787 Heading H2A [Also in Division F1] An ignition system is of the form disclosed in Specification 1,442,787 but has a modified trigger signal-producing rotor comprising a permanent magnet 63 and a magnetic supporting sleeve 73 which are coaxial with the rotor axis, an eccentrically shaped outer magnetic member 75 with a radial slot A in its peripheral portion furthest from the rotor axis so that magnet 63 produces opposite poles at the opposite sides of slot A thereby producing trigger signals in a trigger coil as the slot rotates past the coil and thus producing ignition pulses below a predetermined engine speed, a notch C in member 75 adjacent slot A so that the notch C causes advanced ignition above this speed, and a non- magnetic cup 77 receiving the members 63, 73, 75 and eccentrically configured to dynamically balance the trigger rotor.
Patent GB-801758-A (GB)
Title: Improvements in or relating to centrifugal fans
Inventor: COLLINS THOMAS BOSANKO
IPC: F04D29/70
Filed: 1955-09-26
Abstract: 801,758. Centrifugal fans. DAVIDSON & CO., Ltd. Sept. 7, 1956 [Sept. 26, 1955], No. 27378/55. Class 110 (1). Dust is dislodged from the blades of a centrifugal fan by at least one stream of fluid issuing from a stationary nozzle device located within the fan impeller and connected by ducting to a fluid supply source. In the centrifugal fan shown, air extracted from the fan discharge through an orifice 18 at the volute cut-off 19 passes, by way of a chamber 20 and a duct 17, to a nozzle 16 disposed inwardly of the inlet edges of the impeller blades 26. The nozzle 16 directs a stream of air on to the blades 26, preferably on to their trailing faces, to dislodge dust from them. The action of the air may be assisted by granular material, fed into the duct 17 from a hopper 21 through a control valve 23. The single wide nozzle 16 may be replaced by several smaller nozzles spaced along the duct 17. The cleaning fluid may be supplied from a separate source instead of from the fan discharge, and may be water instead of air.
Patent GB-1146509-A (GB)
Title: Improvements in or relating to devices for heating non-metallic materials in an electromagnetic radiation field
IPC: H01Q13/02
Filed: 1966-06-20
Abstract: 1,146,509. Microwave heating; R.F. couplings. ATLAS - MAK MASCHINENBAU G.m.b.H. 20 June, 1966 [18 June, 1965], No. 27391/66. Headings H4A and H5H. A device for heating non-metallic materials in an electromagnetic field comprises an array of open waveguide radiators 22, 27 &c., the individual apertures 18 of which form a common elongated aperture, across which the material under treatment is drawn transversely. The said radiators are coupled to a common feed waveguide 13 through coupling holes spaced half a waveguide wavelength apart, the said feed waveguide being arranged for standing wave conditions, and means being provided for effecting a 180 degree phase shift between the waves coupled out through adjacent coupling holes. As described, the apertures 18 are rectangular and the radiators are excited in the H 10  mode by means of inductive loops 23, 26 &c., coupled to the feed 13, which is of coaxial type, by adjustable probes 21 extending through the coupling holes. Alternate loops are disposed at 180 degrees to each other, so that all the apertures radiate in phase. The line 13 is supplied by a generator 19 via a matching section 20 and is terminated with a short-circuit 28 spaced a quarter- or a half-wavelength beyond the last probe.
Patent GB-761826-A (GB)
Title: Improvements relating to frequency discriminators
IPC: H03D3/10
Filed: 1954-09-23
Abstract: 761,826. Frequency discriminators. GENERAL ELECTRIC CO. Sept. 23, 1954 [Sept. 23, 1953], No. 27537/54. Class 40(5) A frequency discriminator comprises symmetrically conductive non-linear resistors 30, 32 to which the variable frequency is applied in push-pull through a frequency sensitive network, one end of each resistor being connected to a D.C. biasing source 36. The resistors may be of thyrite (SiC), magnetite (Fe 3 O 4 ), conductive rubber, or neon glow tubes. The network produces phase variation of the normally quadrative voltages applied to the resistors 30, 32 on departure of the frequency from its mean value equal to that of the tuned circuit 20, 28, superimposed on a relatively constant phase across a tertiary winding 22 of the input transformer 18, i.e. differential amplitude inputs to the resistors, resulting in a demodulation voltage being produced across the condenser 28. The demodulated output may be taken from a centre or other tapping of the winding 20 and applied to low frequency amplifying and output valves 40. 50. The D.C. bias may be derived from H.T. through a smoothing RC network 38, 34. Interference peaks and holes in signals are mainly eliminated, as peaks at most produce zero voltage across condenser 28 and holes only the initial small bias across the condenser 28 in the absence of any input.
Patent GB-237478-A (GB)
Title: Improvements in swash-plate engines
IPC: F16H23/08
Filed: 1924-11-18
Abstract: 237,478. Sherman, T. L., and Crankless Engines, Ltd. Nov. 18,1924. Engines with main shaft parallel to axis of cylinder; driving gear.-In a motor such as described in Specification 109,707, and having a swash-plate 1 secured to ,the shaft 2 which is acted upon by pivoted slippers 8 secured to a plate 5 to which the pistons are secured by connecting-rods 4 with ball-joints at both ends, the plate 5 is anchored so as to permit an angular oscillation by a single radial trunnion 11 upon which is mounted a rectangular block 12 which slides in a guide 17 located below the engine shaft. The guide 17 is pivoted at its ends 21, and may be fitted with renewable wearing strips 18, and may have lateral flanges 19 to catch and supply lubricant by means of holes 20.
Patent GB-480880-A (GB)
Title: An improved form of spectacle and like cases
IPC: A45C11/06
Filed: 1936-10-12
Abstract: 480,880. Spectacle cases. RAPHAEL, O. P. Oct. 12, 1936, No. 27588. [Class 18] [Also in Group XX] In order to prevent fraying of the lining, a spectacle case is first provided with its outer covering which is turned over the edge of the lid and secured to the inside by ironing between press tools. The lining, after being treated with adhesive, is then positioned in the case, the lid with the lining uppermost is placed in a heated securing tool and the edge of the lining is pressed flat by a pressing tool which at the same time seals the lining to the outer covering material.
Patent GB-974073-A (GB)
Title: Bleaching of cellulosic material
IPC: D06L4/12
Filed: 1963-07-12
Abstract: Wool pulp is bleached by contacting it with an aqueous hydrogen peroxide solution to produce a partially bleached material and a partially spent aqueous hydrogen peroxide solution, adding an organic carboxylic acid anhydride, e.g. formic, acetic, propionic, n butyric, isobutyric, malonic or succinic acid anhydride, to the partially spent aqueous hydrogen peroxide solution to yield a solution having further bleaching action and further bleaching the partially bleached material with this solution the wood pulp may be contacted with the original hydrogen peroxide solution having a concentration of 1-10% by weight of the wood pulp and a pH of 6.5-9 and preferably containing sodium hydroxide in the presence of stabilizers, e.g. sodium silicate and magnesium sulphate, at a temperature of 250 DEG -100 DEG C. for 10-45 minutes.  The acid anhydride is then added, preferably in an amount of 0.5-2.5 moles per mole of hydrogen peroxide in the partially spent solution, if desired together with an acid, e.g. acetic sulphuric, hydrochloric or phosphoric acid or an excess of the anhydride, to adjust the pH value and bleaching continued at 30 DEG -70 DEG  for a further 2-15 minutes.  The hydrogen peroxide may be added as such or may be produced from an inorganic peroxide, e.g. sodium, potassium, lithium or barium peroxide which yields hydrogen peroxide on contact with water or from a percarbamate.  The wood pulp may be ground wood pulp, chemi-ground wood pulp or semi chemical wood pulp.  When bleaching hardwood pulp the process may comprise a number of steps e.g. chlorination, caustic extraction, hypochlorite bleaching, chlorine dioxide, hydrogen peroxide or additional hypochlorite bleaching followed by either a one-stage or two-stage-final hydrogen peroxide bleach.
Patent GB-807261-A (GB)
Title: Process for preparation of chlorides of uranium
IPC: C01G43/08
Filed: 1945-10-20
Abstract: Uranium chlorides and in particular uranium tetra- and penta-chloride are prepared by reacting an oxide or oxychloride of uranium with carbon tetrachloride in the liquid state at a temperature from 80-200 DEG  C. whilst agitating the reaction mixture.  The carbon tetrachloride is preferably employed in a large excess and the reaction may be accelerated by the addition of uranium pentachloride to the reacting mixture initially or during reaction.  Suitable uranium oxides are the dioxide, the tritaoctaoxide and trioxide.  The latter may be prepared by precipitating hydrated uranium peroxide from an aqueous uranyl nitrate solution with hydrogen peroxide and heating the precipitate at 100-400 DEG  C.  According to examples: (1) uranium trioxide together with a minor amount of uranium pentachloride was charged to an autoclave with an excess of liquid carbon tetrachloride.  The reaction mixture was heated to 120 DEG  C. whilst agitating and the temperature was allowed to rise to 160 DEG C. after which the autoclave was opened and the carbon tetrachloride vaporized.  Residual carbon tetrachloride may be removed by vacuum pumping and uranium pentachloride was recovered in the reactor; (4) uranium trioxide together with a minor amount of uranium pentachloride was charged to an autoclave with a large excess of carbon tetrachloride and the mixture was heated to 120 DEG  C. and allowed to rise to 160 DEG  C.  By-product gases such as chlorine and phosgene were purged as produced and the temperature was finally raised to about 180 DEG  C. whilst continuing purging to remove by-product gases.  Uranium tetrachloride was thereby produced.
Patent GB-445102-A (GB)
Title: Improvements relating to paper and like bags and like containers
IPC: B65D33/24
Filed: 1934-09-27
Abstract: 445,102. Paper &c. carrier bags. LOW TEMPERATURE CARBONISATION, Ltd., and STEPHENS, J. H., 28, Grosvenor Place, Westminster. Sept. 27, 1934, Nos. 27667 /34 and 20588/35. [Classes 94 (ii) and 133] A paper &c. bag, &c. provided with reinforcements b at the mouth having hand slots c therein, the reinforcements being brought together in the closing of the bag, the hand slots being then in coincidence, is provided with a sealing flap d adapted to be threaded through the slots c and over the upper reinforced edges of the bag and to be secured e.g. by rubber latex, &c. carried at d<1>, d<2>, at that side of the bag by which it is carried. In a modification the mouth is further sealed by additional flaps, one at each side of the hand slots, secured to the opposite sides of the bag by rubber latex &c. The bag may be of the multi-ply type, reinforced longitudinally at the folds, the reinforcements b being positioned between the plies. Specification 442,750 is referred to.
Patent GB-1219913-A (GB)
Title: Improvements relating to the production of artificial fibres
Inventor: BARKER HARRY KEITH
IPC: D01D10/04
Filed: 1967-06-15
Abstract: 1,219,913. Spandex thread. COURTAULDS Ltd. 14 June, 1968 [15 June, 1967], No. 27678/ 67. Headings DID and D1F. A process for the production of a multifilament spandex thread comprises extruding a solution of a precursor of the spandex filament into a coagulating bath which is capable of reacting with the precursor to form filaments of the spandex type, and withdrawing the thread upwardly from the bath onto a rotating thread-advancing device 1 by way of a smooth annular surface 3 on a cowl 2 which is mounted at the end of the thread-advancing device from which the thread is advanced and rotatable with the device, so that the thread is twisted, the process being characterised in that the thread 4 is passed around a guide 5 located between the cowl and the threadadvancing device so as to maintain the thread in contact with the surface 3. The guide 5 is preferably a curved rod which extends into the space between the cowl 2 and the reel and also extends substantially 180 around the reel 1. The cowl 2 is preferably bevelled at 8 adjacent the outer periphery of the surface 3 and also at 9 adjacent the inner periphery of the surface 3. An additional guide may be located adjacent the smooth surface 3 to pievent the thread being carried over the penpheral surface of the cowl.