baber/WOPTO huggingface dataset:
Patent GB-1413342-A (GB)
Title: Manufacture and retreading of pneumatic tyres
IPC: B29D30/54
Filed: 1973-08-23
Abstract: 1413342 Pneumatic tyres GENERAL TIRE & RUBBER CO 23 Aug 1973 [1 Sept 1972] 40049/73 Heading B7C An annular member 10 for applying heat and pressure during the vulcanization of an unvulcanized bonding layer B between vulcanized tread stock T and a tyre casing C, comprises circular, rigid, inextensible beads 15 at each axial end 13 of the annular member, and a fluid impermeable, tubular bladder 20 having a steam chamber 16 defined by a pair of substantially mutually parallel walls 22, 24 having substantially cylindrical central portions and substantially frusto-conical marginal portions, the radially outer wall 24 being radially restrained by the provision of layers 42, 44, 46 and 48 of cord reinforced rubber. The annular member may be utilized for retreading used tyres or for applying a tread during the manufacture of a new tyre. In use the tyre casing C may be inflated to approximately 90 p.s.i. and pressurized steam is passed through the chamber 16 by means of respective inlet and outlet valve members 18. The layers 42, 44, 46 and 48 each comprise mutually parallel reinforcing cords extending at angles of approximately 30 degrees to the circumferential direction. A layer 52 of rubber reinforced with cords extending substantially at 90 degrees to the circumferential direction, is provided radially inwardly of the radially inner wall 22. The layer 52 extends around the ends 13 of the annular member and has overlapping ends, e.g. the end 54. Cordreinforced bladder plies 28 are folded around the ends of the bladder 20. Cord-reinforced rubber plies 37 are wrapped around the beads 15. The radially innermost layer of the annular member is formed by an elastomeric protective layer 30. The beads 15 comprise steel wires 25 embedded in a hard elastomeric matrix 26. The cords of the various layers and plies may be formed of cotton, nylon, rayon, steel, polyester or glass. The binding layer B is preferably formulated to vulcanize at between 140 and 220‹F.
Patent GB-1318707-A (GB)
Title: Childs chair
IPC: A47D1/04
Filed: 1970-08-20
Abstract: 1318707 Child's high/low chair K NIELSON 20 Aug 1970 [ 20 Aug 1969] 40126/70 Heading A4J The child's high chair is formed of tubes or rods and these form two identical portions 1, 2 that are pivotally connected. The construction is otherwise as in Specification 1091953 [ Group A4]
Patent GB-1269782-A (GB)
Title: Pulse circuitry
IPC: C11D13/04
Filed: 1969-08-12
Abstract: 1,269,782. Transistor switching circuits. TEXACO DEVELOPMENT CORP. 12 Aug., 1969 [21 Aug., 1968], No. 40165/69. Heading H3T. A transistor switching circuit providing narrow high voltage pulses at high frequencies, more particularly for a particle accelerator, comprises input circuits (e.g. bi-stable circuits A1, A2) controlling drive transistors Q11, Q12 for complementary chains of transistors Q1-Q5, Q5-Q10 connected by a common collector connection to an output terminal M. Switching of the chains is accelerated by connecting the bases of transistors Q2-Q5, Q7-Q10 via resistive-capacitive combinations (e.g. C2R1) to voltage dividing biasing networks. The chains are switched in antiphase from one state to another in response to input pulses applied alternately to input terminals I, J. Bi-stable circuits A1, A2 are formed as integrated circuits.
Patent GB-1183695-A (GB)
Title: Heterocyclic Nitrogen-Sulfur Compositions and Lubricants containing them
IPC: C10M159/12
Filed: 1968-08-22
Abstract: 1,183,695. Acylated alkylene polyamine derivatives. LUBRIZOL CORP. 22 Aug., 1968 [25 Aug., 1967; 17 May, 1968], No. 40280/68. Heading C2C. [Also in Divisions C3 and C5] Lubricant additives are prepared by reacting (A) R<SP>1</SP>NHNR<SP>2</SP>R<SP>3</SP>, where R<SP>1</SP>, R<SP>2</SP> and R<SP>3</SP> are hydrogen or substantially hydrocarbon, at least one being hydrogen, (B) carbon disulphide and (c) an acylated nitrogen compound containing at least one acyl, acyloxy or acylimidoyl radical of at least 20 carbon atoms directly attached to a nitrogen of an alkylene polyamine or hydroxyalkyl substituted alkylene polyamine. The acyl compound may be derived from a petroleum fraction olefin polymer, synthetic alkane or long chain halide, sulphide, mercapto compound, aldehyde, ketone or nitro compound, by oxidation, reaction with ketene, reaction with an acid or functional derivative or with carbon dioxide, or conversion to nitrile followed by hydrolysis. Preferred-amino compounds are C 2-3  alkylene and polyalkylene polyamines, piperazine and amino alkyl piperazines. The carbon disulphide may be in the free state or provided by a metal trithiocarbonate, dithiocarbamate or xanthate. In examples, products are obtained by reacting hydrazine hydrate and carbon disulphide with acylated nitrogen compounds derived from (11) tetrapropylene, maleic anhydride and triethylene tetramine, (18) isostearic acid and pentaethylene hexamine, (21) dimethyl malonate, sodium ethoxide, brominated wax and N 3-7  polyethylene polyamines and (23) methyl heptacontanyl ketone, chloroform, sodium bypochlorite and N 3-7  polyethylene polyamines. The products are said to comprise amine salts of 2,5-dimercapto-1,3,4-thiadiazole.
Patent GB-1378443-A (GB)
Title: Carpet sweeper handle
IPC: A47L11/32
Filed: 1972-09-01
Abstract: 1378443 Carpet sweepers H FUKUBA 1 Sept 1972 [4 April 1972] 40565/72 Heading A4F [Also in Division B4] A carpet sweeper has a curved or bent handle portion 9 rotatably connected to a member 6 pivotally mounted in a groove 7 in the upper wall of the sweeper casing 1 by a pin 8 extending between the sides of the groove 7 so that the handle portion 9 is pivotable sideways with respect to the casing 1. A pin 10 extending from the handle portion 9 is rotatably mounted in a bearing 11 in the member 6. By swivelling the handle in the bearing 11 the direction of movement of the sweeper over a carpet may be controlled. In an alternative embodiment a member 6a Fig. 6 (not shown) is pivotally mounted by a pin in a U-shaped plate spring and is rotatably coupled to the handle end (9a) by a pin 10a engaging a bearing retained in the handle end. In both embodiments the handle may be maintained upright by the engagement of a plate spring 15 with a flat surface on the member 6 or (6a).
Patent GB-1324629-A (GB)
Title: Process for the preparation of quinoxaline di-n-oxides
IPC: C07D241/52
Filed: 1971-08-31
Abstract: 1324629 Quinoxaline di-N-oxides PFIZER Inc 31 Aug 1971 [31 March 1971] 40653/71 Heading C2C Quinoxaline di-N-oxides of the formula wherein X is a substituent at the 6- or 7-position and is H, F, Cl, Br, CF 3 , CH 3  or CH 3 O, and R is C 1-4  alkyl or C 1-4  alkanoyloxy-C 2-4  alkyl are prepared by reacting #-ketoesters of the Formula I with benzofuroxans of the formula wherein X is at the 5- or 6-position, in the presence of catalytic amounts of calcium hydroxide at 40-80‹ C. Alkanoyloxyalkyl acetoacetates of the above Formula I are obtained by reacting diketene with the corresponding alkanoyloxyalkanols of the formula ROH, resulting from reacting the appropriate glycols with the corresponding amides in the presence of zinc chloride under reduced pressure. Reference has been directed by the Comptroller to Specification 1,134,729.
Patent GB-1458635-A (GB)
Title: Apparatus for burning liquid hydrocarbons in a forced draft  burner
IPC: F23D11/40
Filed: 1974-09-19
Abstract: 1458635 Burners ATELIERS DES CHARMILLES SA 19 Sept 1974 [21 Sept 1973] 40801/74 Heading F4T In a forced draught oil burner, having a fuel atomizing nozzle 3, water is injected into the flame from a co-planar atomizing nozzle 5 to improve the combustion efficiency. In an alternative embodiment, Fig. 2 (not shown), three co-planar nozzles are provided, the outer nozzles being for the oil supply and the central nozzle for the water. In a further embodiment, Fig. 3 (not shown), oil and water are ejected from a common nozzle. A flame deflector 6 is provided in all the embodiments.
Patent GB-892425-A (GB)
Title: Tubing manufacture
IPC: B29C67/00
Filed: 1959-12-01
Abstract: A tube is formed by placing plasticized material 21 in a trough 19 positioned in a liquid bath 17 <PICT:0892425/IV (a)/1> <PICT:0892425/IV (a)/2> <PICT:0892425/IV (a)/3> <PICT:0892425/IV (a)/4> and injecting a fluid into the plasticized material to form a bubble 29 which expands to form an envelope 31.  The fluid charge may contain a gas 27 and a liquid 25 which may be of the same density as that of the liquid in the bath so that the equilibrium position shown in Fig. 4 is obtained.  At this stage, the pipe 23 for the fluid charge may be retracted.  The envelope 31 is withdrawn from the bath 17 by rollers 37 to form a tube whilst additional plasticized material is fed through a pipe 35 into the trough 19.  The internal size of the tube may be controlled (a) by using liquids 25 and 17 of different densities (Figs. 6 and 7, not shown), (b) by varying the rate of tube withdrawal, (c) by varying the volume of the liquid portion 25 or (d) by varying the distance between the level of the bath 17 and the plasticized material 21. When the formed tube is flexible, the gaseous part of the fluid charge keeps the walls of the tube apart, but where the tube is rigid, the fluid charge may consist wholly of liquid (Fig. 8, not shown).  In a modification, Fig. 10, a common pipe 59 may be used for feeding both the fluid charge and the plasticized material, the pipe having valves 67 to control the flow of the desired material.  The liquid 17 may be employed as a coagulating medium, and premature coagulation of the plasticized material may be avoided by covering it with a layer of protective liquid, e.g. when water is used in coagulating a tube of viscose a layer of methyl benzoate may be placed over the viscose. Alternatively, such a layer may be used to apply a coating to the finished tube. The plasticized material may be viscose, nitrocellulose, cellulose ethers and esters, vinyl resins, polythene, polypropylene, nylon or thermosetting resins such as phenol, urea, melamine or sulphonamide aldehyde resins.
Patent GB-940768-A (GB)
Title: Laminated sound absorbing elements
Inventor: CHRISTENSEN REGNAR
IPC: E04B1/84
Filed: 1960-11-28
Abstract: 940,768. Laminates. EVERS & CO. A.B. Nov. 28, 1960, No. 40873/60. Heading B5N. A sound-absorbing element comprises a bat of mineral wool having a density of 50 to 150 kg/m.<SP>3</SP> and, laminated thereto, a layer of glass fabric or glass tissue, the bat having relatively stiff supporting boundaries, the exposed face of the layer of glass fabric or glass tissue bearing a film of paint having apertures of the order of 0.5 mm. or less. The layer of glass fabric or tissue may be secured to the bat by an adhesive comprising an emulsion of synthetic resin, e.g. polyvinyl acetate, or a thermosetting adhesive, eg: a phenol-, melamine-, or urea-aldehyde resin. The paint may be an oil in water emulsion paint. The stiff supporting boundaries may be obtained by enclosure of the bat in a rigid frame of gypsum, cement, putty, or plastic, or by impregnating its peripheral regions with a hardenable composition, e.g. a lacquer containing urea-formaldehyde and alkyd resins; an alcoholic solution of polyvinyl acetate; a methyl-ethyl ketone solution of vinyl chlorideacetate copolymer; a pulverulent phenol-, melamine-, or urea-aldehyde resin which is hardened by external heating; or sodium or potassium silicate compositions. Fire-resisting agents, such as antimony trichloride, may be incorporated in the paint or adhesive.
Patent GB-1521107-A (GB)
Title: Thyristors
IPC: H01L31/111
Filed: 1975-10-07
Abstract: 1521107 Semiconductor devices SIEMENS AG 7 Oct 1975 [10 Dec 1974] 40930/75 Heading H1K A thyristor device has three thyristor structures corresponding to three separate surface emitter zones, which have geometries chosen so that illumination of one emitter zone does not ignite the associated thyristor structure until the two other thyristor structures have ignited. The emitter zones 7, 5, 2 are located at the surface of a base zone 4, and define first and second auxiliary thyristors and a main thyristor. Overlying the emitter zones are electrodes 9, 6 and 3. Electrode 9 encloses a region 8 which is exposed to light for control purposes, and also has a segmental portion 10. The geometry of the emitter zones is chosen so that irradiation of region 8 results in the first auxiliary thyristor providing load current sufficient to ignite the second auxiliary thyristor, which then supplies the current to ignite the main thyristor prior to the subsequent extinguishing of the second auxiliary thyristor and ignition of the first auxiliary thyristor. In order to achieve this mode of operation, the ratio of the boundary length of the emitter zone 2 to the boundary length of emitter zone 5 is selected to be at least 4 : 1, and the boundary length of emitter 5 divided by the area 8 is chosen to be #15 mm<SP>-1</SP>.
Patent GB-1159219-A (GB)
Title: Process for the Chemical Bleaching and Optical Brightening of Cellulose or Synthetic Polyamide Textile Fibres
IPC: D06L4/24
Filed: 1967-09-07
Abstract: 1,159,219. Bleaching and brightening cellulose or synthetic polyamide fibres. J. R. GEIGY A. G. 7 Sept., 1967 [8 Sept., 1966], No. 40978/67. Heading D1P. Cellulose and synthetic polyamide textile fibres are chemically and optically bleached by applying .thereto a water soluble salt of chlorous acid in an aqueous acid liquor at raised temperature and drawing on to the fibres before or during the chemical bleaching with the salt of chlorous acid an optical brightener having the formula in which of Y 1 , Y 2 , Y 3  and Y 4 , one Y represents the sulphonic acid group and the other Y's represent hydrogen, and of Q 1  and Q 2 , one Q represents fluorine, chlorine or bromine and the other O represents hydrogen, or a salt thereof, e.g. an alkali metal, ammonium or amine salt thereof. The salt of chlorous acid may be an alkali metal chlorite and the pH of the bath thereof may be adjusted to about 3-5 by the addition of oxalic, formic, acetic, sulphuric or phosphoric acid or an acid phosphate. The bleaching baths may also contain wetting and dispersing agents, e.g. fatty alcohol sulphates, fatty acid alkanolamides or higher alkyl benzene sulphonates, salts of oxidising acids suitable for the passivation of iron apparatus, e.g. alkali metal nitrates or chlorates, and Glaubers salt. Cotton, regenerated cellulose and synthetic polyamide fibres may be treated.
Patent GB-1521085-A (GB)
Title: Detector for an infrared analyser
IPC: G01N21/35
Filed: 1975-10-07
Abstract: 1521085 Infrared analyzer LEEDS & NORTHRUP ITALIANA SpA 7 Oct 1975 [22 Oct 1974] 41099/75 Heading G1A A detector arrangement, for an infrared analyzer, for determining the concentration of a particular constituent in a liquid or gas sample and of the type in which radiation from a single source passes through the sample to the detector, comprises an outer casing 6 having inner reflective walls, and an inner casing 15 having outer reflective walls and provided with two chambers 22, 23 each containing a thermistor detector 25, 33, one chamber, 22, which receives radiation emerging from the sample along a direct path, being closed by a filter restricting radiation reaching the thermistor 25 to a band absorbed by the constituent to be determined, the other chamber 23 facing away from the incoming radiation which it receives along a tortuous path including the reflective walls of the casings. The thermistors are supported by annular ceramic rings 17, 18, provided with suitable holes for passage of connecting wires for connecting the detectors in a Wheatstone bridge. The casing 5 is closed at its end facing the incoming radiation, by a transparent window and at its opposite end by a screw plug 11, by which the cross-section of the passageway for radiation entering chamber 23, may be adjusted. This is done when the Wheatstone bridge is balanced without a sample in the radiation path. In operation, when a sample, containing no constituent of interest, is inserted, a slight unbalance of the bridge occurs, while, if such constituent is present, a large unbalance in the opposite direction occurs. Chamber 23 may be closed by an additional filter to emit the bandwidth of the reference beam to a certain portion of the spectrum.
Patent GB-930310-A (GB)
Title: Improvements in or relating to tyre building formers or drums
Inventor: TREVASKIS HENRY WILLIAM
IPC: B29D30/24
Filed: 1958-12-20
Abstract: 930,310. Tyre building formers. DUNLOP RUBBER CO. Ltd. Nov. 24, 1959 [Dec. 20, 1958], No. 41196/58. Class 144 (1). A tyre building former has a building surface formed by a number of separate arcuate segments 4 each having an inner peripheral dovetail section rib 5 which, when the segments are assembled end to end, forms an annular rib which is gripped between angle-section peripheral flanges 8, 9 of a pair of radial discs 7, one of the radial discs 7 having radially spaced sealing rings 11 co-operating with the other disc 7 to define an annular space between the discs which may be exhausted of air via an outlet 13 in one of the discs so that the discs are forced together by atmospheric pressure. As shown, the discs are slidably mounted on a shaft 16 having an abutment 17 for one disc, and a circumferential groove 18 receiving a circlip 19 to abut and retain the other disc when in the clamping position. This permits release of the vacuum between the discs during tyre building. The ribs 5 each have a transverse dovetail section slot 6 therein to receive a complementary locating block 10 carried by the flange 8 of one of the discs 7.
Patent GB-1222202-A (GB)
Title: Extrusion method and apparatus
IPC: B21C23/00
Filed: 1966-12-15
Abstract: 1,222,202. Extruding. NATIONAL RESEARCH DEVELOPMENT CORP. 13 Dec., 1967 [15 Dec., 1966; 8 Sept., 1967], Nos. 56241/66 and 41249/67. Heading B3P. In the hydrostatic extrusion of a continuous billet 5 through a die 10, the billet is fed through clamping means 7 into a pressure chamber 1 and after clamping the billet, the chamber is pressurized and the distance between the die and clamping means is reduced to force the billet through the die. The chamber is pressurized by an annular plunger 8 surrounding a second plunger 9 carrying the extrusion die and which is moved inwardly during extrusion by an external ram or by an eccentric and connecting rod. Seals S are provided. In another embodiment, Fig. 2 (not shown), the annular pressurizing plunger (8<SP>1</SP>) is at the inlet end of the billet. In a further embodiment, Fig. 3A, the billet is fed upwardly through a straightening device (36), Fig. 3B (not shown), a preliminary sizing die (48) and hydraulic clamping means 26 into the pressure chamber 21 wherein the liquid is pressurized by an annular plunger 23 actuated by a main upper ram 24 normally biased upwardly by fluid pressure. The feed plunger 25 attached to the clamping means 26 is then moved upwardly by rams 27 to extrude the billet through the die (22), Fig. 5 (not shown). The extruded wire 37 is wound on a reel 38 driven by air through a variable-speed gear-box. Pressure'in chamber 21 may be monitored by a coil (42), Fig. 5 (not shown). An hydraulic control circuit is described, Fig. 6 (not shown).
Patent GB-1116451-A (GB)
Title: Method of and apparatus for transmitting energy by pressure oscillations in a fluid
Inventor: FOSTER KEITH
IPC: B23D15/14
Filed: 1964-10-13
Abstract: 1,116,451. Fluid-pressure apparatus. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Oct. 7, 1965 [Oct. 13, 1964], No.41799/64. Headings F1P and F1X. A branch duct (18) of a gas or liquid-filled duct (12) through which oscillations are transmitted by a mechanical oscillator (9) to a receiver (10) is connected to a cylinder (17) having an adjustable piston (19) therein whereby the natural frequency of vibration of the fluid in duct (12) is in phase with the mechanical oscillations. The oscillator (9) and receiver (10) are as described in Specifications 1,116,452 and 1, 038, 832 respectively.
Patent GB-1435263-A (GB)
Title: Machinery stop and method of installation
IPC: E02F3/36
Filed: 1974-09-26
Abstract: 1435263 Making machinery stops CLARK EQUIPMENT CO 26 Sept 1974 [27 Sept 1973] 41907/74 Heading B3A [Also in Divisions E1 and F2] A stop 10 having an adjustment portion 14 resiliently connected to a base portion 12 is adjusted for engagement between an excavator bucket 34 and a boom arm 26a by welding the base portion 12 to the bucket, moving the bucket to a desired limit position so as to move the adjustment portion 14 to an adjusted position and welding the adjustment portion 14 in its adjusted position to the base portion 12. Two additional stops 10c and 10b are welded to a cross tube (28) interconnecting the two boom arms to limit the movement of bellcrank 38.
Patent GB-1414354-A (GB)
Title: Loading and unloading arrangements comprising a crane
Inventor: LEBESBY F J
IPC: B66C23/68
Filed: 1973-09-06
Abstract: 1414354 Cranes for unloading ships NYLANDS VERKSTED 6 Sept 1973 [6 Sept 1972] 42002/73 Heading B8B A crane 11 is rotatably mounted at the end of a base beam 14 cantileverly pivoted to a column 4, e.g. on a ships deck 2. The beam may comprise two mutually pivotable beam sections and may be telescopic. The free end of the beam may have a pivotal supporting leg, and may carry rails on which the crane can run.
Patent GB-1242143-A (GB)
Title: Variable capacity rotary sliding vane pumps
Inventor: BROWNELL DAVID A
IPC: F04C2/344
Filed: 1968-09-04
Abstract: 1,242,143. Rotary pumps. D.A. BROWNELL. Sept.4, 1968 [Sept.20, 1967], No.42027/68. Heading F1F. A rotary sliding vane pump comprising a rotor 16, Figs.1 5, having a plurality of radial, axiallyextending slots 18 slidably mounting vanes 20 whose tips engage an elongate chamber 14 of elliptical, cross-section formed in stationary members 46, 48 is splined to a shaft 24 to permit rotation thereby and axial movement thereof with respect to the chamber to vary the pump capacity. One end of the chamber 14 is closed by a plug means 22 secured to the rotor for axial movement therewith by a nut 64 and the other end of the chamber by a sealing means 26 rotatable with the rotor and held against axial movement by the members 46, 48. A pinion 74 rotatable from outside the pump casing co-operates with a rack 72 secured to the rotor to move the rotor hub 62 and vanes 20 axially. As shown in Fig.1 the pump is operating at maximum capacity. On axial movement of the rotor the plug means 22 is moved closer to the seal means 26 to reduce pump capacity, which may be reduced to nil when the end-face of the plug means 22 abuts the end-face of the seal means 26.
Patent GB-1142775-A (GB)
Title: Lining on or for fan stator rings and the like
Inventor: DAVIDSON EUGENE MORTON
IPC: B29C63/00
Filed: 1967-09-15
Abstract: 1,142,775. Making fan stators. HUDSON ENG. CORP. 15 Sept., 1967, No. 42141/67. Heading B3A. [Also in Division F1] An axial-flow fan stator lining is formed of bent strips of metal foil, e.g. aluminium, joined together by adhesive to form a honeycomb structure. This structure is mounted on a backing strip 21 of fibreglass-reinforced thermosetting epoxy resin before the resin has set. The lining may be made up in large sheets and then cut into sections which are secured to the fan stator 11 by screws 22. The lining is annealed, to soften the structure and substantially destroy the adhesive. Thereafter, the running clearance at the impeller blade tips is provided by crushing the assembled lining by one or a pair of rollers 31, 32 carried by an impeller blade 13.