baber/WOPTO huggingface dataset:
Patent GB-1526287-A (GB)
Title: Facsimile coding
IPC: H04N1/419
Filed: 1975-12-08
Abstract: 1526287 Data transmission; facsimile systems SIEMENS AG 8 Dec 1975 [9 Dec 1974] 50204/75 Heading H4P Signals representing picture-elements of a twotone original are obtained by line by line scanning of the original and are coded, prior to transmission, by representing the lengths of strings of like signals by respective binary words. A line sync. word is produced at the start of coding of a scanned line, and an address word is produced immediately after the line sync. word and also immediately after each n bits in the sequence of binary words. The address word indicates the address, e.g. relative to the beginning of the line, of a particular picture element, e.g. the next black one, and it may include a bit indicating the tone of that element. Fig. 1 illustrates an example of the coding of a line containing strings of white WL and black SL picture elements. A black string is represented by a 2-bit word CS and a white string by a 4-bit word. If a string is longer than can be represented by one such word it is supplemented by one or more 6-bit words CVS or CVW. The line sync. word LW, which immediately follows the last black word in the preceding line, has a length which is an integral multiple of 6 bits. The address words CA have a length which is 4 plus an intergral multiple of 6 bits, e.g. 10 bits. A line sync. word LW1 is immediately followed by an address word CA 1 which indicates the address of the first bit of the first black string, here the fifteenth bit from the start of the line. Then follow, alternately, 2-bit and 4-bit words CS, CW, supplemented by 6-bit words CVS or CVW where necessary. Immediately following an integral multiple of 6 bits, e.g. 102 bits, of the run length code words a second address word CA2 is provided. This normally specifies the address of the first bit of the next black sequence. However, if the address interrupts a word CVS that supplements a black run length code word the address of the last bit which has already been coded of this string is specified by the address word, and this word is followed by a word CS, supplemented by CVS if necessary, to indicate the run length of the remainder of the string plus one bit. The coding circuitry used at the transmitter and the decoding circuitry at the receiver are described, Figs. 2-11 (not shown).
Patent GB-1294661-A (GB)
Title: Fluorinated unsaturated organic compounds
Inventor: HASZELDINE R N
IPC: C08F36/00
Filed: 1968-10-23
Abstract: 1294661 Polymers of fluoroallenes PENNSALT CHEMICALS CORP 22 Jan 1970 [23 Oct 1968] 50295/68 Heading C3P [Also in Divisions B2 and C2] Polymers and copolymers are prepared from compounds of formula RR 1 C=C=CF 2 , in which R is a fluoro or fluorochloro-alkyl or cycloalkyl group having up to 20 carbon atoms and R 1  is fluorine, chlorine or a fluoro- or chlorofluoro-alkyl or cycloalkyl group having up to 20 carbon atoms, by polymerization in bulk, solution or suspension using a free-radical initiator. Comonomers specified are tetrafluoroethylene, hexafluoropropene and vinylidene fluoride. Initiators specified are organic peroxides, e.g. benzoyl peroxide and t-butyl peroxide, or inorganic peroxy compounds, e.g. potassium persulphate. The polymers may be cross-linked, either by milling or heating in the presence of a free-radical initiator, e.g. benzoyl peroxide, or by reaction of the = CRR<SP>1</SP> groups with a difunctional reagent, e.g. diamines, diols and alkoxides derived therefrom, or dithiols and anions derived therefrom. The polymers are used to provide oil- and water-repellent coatings.
Patent GB-1414236-A (GB)
Title: Lacquer systems which are harmless to the environment
IPC: C08L67/00
Filed: 1973-10-31
Abstract: The stoving enamel systems are liquid, solvent-free or low-solvent and are free from aromatic solvents. They contain, as crosslinking agents, melamine resins, benzoguanamine resins or urea resins. As hydroxyl-containing binders, they contain a combination of high-molecular-weight polyesters containing hydroxyl and carboxyl groups (molecular weight between 1500 and 5000) and low-molecular-weight polyol (molecular weight between 62 and 1000). The low-molecular-weight polyol can take on the function of a solvent. As a non-volatile binder constituent, however, it is incorporated chemically into the paint film during stoving. Enamel systems give particularly resistant finishes and are environmentally friendly.
Patent GB-1480591-A (GB)
Title: Substituted phthalazines and their use as therapeutic agents
IPC: C07D237/32
Filed: 1973-10-31
Abstract: 1480591 Substituted phthalazines BOOTS CO Ltd 28 Oct 1974 [31 Oct 1973] 50623/73 Heading C2C The invention comprises compounds of the formula or their enol or enthiol forms of formula in which Q is COOH, CH 2 OH or COOR 6  wherein R 6  is an ester forming group; X is oxygen or sulphur; R is hydrogen or alkyl; Z is hydrogen or acyl; Ar is an aryl group unsubstituted in the positions ortho to the point of attachment to the phthalazine ring and the ring J is substituted, or a pharmaceutically acceptable salt with an inorganic or organic base of any compound which is an acid. The compounds of the invention are used as therapeutic agents.
Patent GB-1159569-A (GB)
Title: Axial Locking Clutch
Inventor: OESTERLE JOHN C
IPC: F16D23/06
Filed: 1966-11-11
Abstract: 1,159,569. Positive clutches. BORGWARNER CORP. 11 Nov., 1966, No. 50746/66. Heading F2C. In a double positive clutch having a sleeve 12 internally splined at 26, 27 to a hub 11 and axially slidable thereon into engagement with external teeth 17, 18 on gears 13, 14, the flanks of the splines 26 of the sleeve 12 are formed with teeth 30 which engage corresponding teeth 33 on the flanks of the teeth 17, 18 as splines 27 under load to prevent axial movement and thus declutching of the sleeve 12 during drive. The teeth 30, 33 may, as shown, have a V-shaped section or may, Fig. 5 (not shown), have a square section. The clutch is provided with friction synchronizing rings 15, 16. As shown the teeth 33 are formed on the flanks of the teeth 17, 18 but may Figs. 6-8 (not shown) be formed on the flanks of the splines (27) of the hub (11).
Patent GB-1446526-A (GB)
Title: Watch strap with plastics fastener
IPC: A44C5/16
Filed: 1974-11-25
Abstract: 1446526 Watch straps TIMEX CORP 25 Nov 1974 [14 Jan 1974] 51019/74 Heading A3H [Also in Division E2] A watch strap adapted to be secured about the bail pin of a watch case comprises a pair of strap elements 12 each of which includes two plastics layers connected along their edges, the outer layer being longer than the inner layer. A stud plate 13 having a base portion 26 is positioned between the layers and a stud 27 thereof projects through an aperture 32 in the inner layer. A keeper plate 14 is disposed on the projecting end portion out the outer layer and an aperture 29 in alignment with an aperture in the outer layer is provided therein. In use the projecting end portion of the strap element 12 is folded back about the bail pin and the stud 27 is snapped into the aperture 29. As shown two studs 27 and corresponding apertures 29 are provided but if the strap element is to be used with a ladies watch case only one of each may be provided (Fig. 5, not shown). The studs are provided with lips 28 which produce the snap action, the depth of each lip 28 being no greater than the thickness of the outer layer. A flexible plastics intermediate layer may be provided between the inner and outer layers and a further like layer 23 over the end portion of the outer layer to form a pocket for the reception of the keeper plate 14. The stud plate 13 and keeper plate 14 are provided with anchoring apertures 31, 34.
Patent GB-1263708-A (GB)
Title: Improved polyamides
Inventor: COWELL CLIFTON DOUGLAS
IPC: C08K5/11
Filed: 1968-10-28
Abstract: 1,263,708. Linear polyamides. IMPERIAL CHEMICAL INDUSTRIES Ltd. 17 Oct., 1969 [28 Oct., 1968], No. 51087/68. Heading C3R. Synthetic linear melt-spinnable polyamides or copolyamides made from dibasic acid and diamine, having increased # rel , are made by a process comprising the incorporation into a molten polyamide of at least one di- or polyaryl ester of a C 5-36  dicarboxylic acid. In the acid, the COOH gps. are attached either to separate C-atoms other than vicinal- or peripositioned C-atoms, or to a single C-atom, whose other bonds are either connected to saturated aliphatic groups or form part of a saturated alicyclic structure. The amount of ester is stoichiometrically equivalent to the free amine end-groups in polyamide P. The time from the incorporation of ester to the solidification of the spun product is such as to give the optimum rise of # rel  in the spun product. The acid may be aliphatic, cycloaliphatic, aromatic, or heterocyclic optionally containing -O-, -S-, -N-, -CO-, or amide groups as part of its structure. The ester may be diphenyl or dicresyl adipate. Many examples of acid and ester are listed. The incorporation of ester may be by coating chips of polyamide with the ester; or by adding ester to polyamide as a master-batch; the ester may first be pelletized with an inert binder. The polyamide may be made in a continuous polymerization process; it may be nylon 6,6 and may have various values of # rel , AEG, and CEG. Also present may be #60 parts Cu, e.g. as Cu acetate and #600 parts I, e.g. as KI, per million parts polyamide. 22 p.p.m. B as NaBO 2  may also be present, # rel  may be #50, and heat-strength retention may be #90%.
Patent GB-1116404-A (GB)
Title: Improvements in or relating to change over switches
Inventor: FEARN ALFRED ARTHUR
IPC: H01H19/58
Filed: 1964-12-16
Abstract: 1,116,404. Inert switches. SMITHS INDUSTRIES Ltd. 10 Dec., 1965 [16 Dec., 1964], No. 51180/64. Heading H1N. A double pole changeover switch comprises four contacts 8, 9, 10, 11 on a printed circuit board 2 and a pair of wire bridges 6, 13 on a rotary insulating disc. In the position shown contacts 8, 9 are bridged by wire 6 and contacts 10, 11 are bridged by wire 13. In the other extreme position contacts 8, 11 are bridged by wire 13 and contacts 9, 10 are bridged by wire 6. The disc is retained in one of these two positions by tightening the screw on which it is mounted. The positions are determined by the co-operation of projections on the disc with lugs 5, of a bracket into which the screw is threaded. The switch is incorporated in a car radio the contacts 8, 10 being connected to the supply leads, contact 11 being connected to the unearthed terminal of the battery and contact 9 being connected to earth. The switch is set in one of its positions according to whether the car has positive or negative earth.
Patent GB-1119772-A (GB)
Title: Improvements in and relating to heat exchangers
IPC: F28F19/00
Filed: 1965-12-03
Abstract: 1,119,772. Cooling liquids in bulk. BOLIDEN, A.B. 3 Dec., 1965 [7 Dec., 1964], No. 51404/65. Heading F4S. A liquid, particularly a highly corrosive liquid such as hot sulphuric acid, is cooled in an upright (cylindrical or oval) chamber by a fluid coolant such as sea water which circulates through groups of tubes 9 (either U-tubes or Field tubes being preferred) each group comprising a radial series of tubes interconnected through header compartments in a structure forming the top cover for the chamber, and the total tube crosssectional area of a group increasing progressively outwardly from the centre of the chamber. The cover structure comprises a lid 5 in which are formed sector-shaped openings. These are closed by header sections (See Fig. 2) from which the tubes extend into the chamber. Each section has its own inlet and outlet 11, 12 leading to main header 17, 18. The liquid to be cooled enters the chamber through an inlet 2. An impeller acting against the inlet stream, causes continuous recirculation of liquid within the chamber to somewhat reduce the temperature of the liquid before it contacts the tube surfaces. Contact by the corrosive liquid with the joints between the tube ends and the headers is prevented by the provision of a cylindrical baffle 6 extending downwardly from the lid 5. The baffle causes a gas pocket to be formed above the liquidas the level rises. Wave shaped inserts may be inserted into the tubes to create turbulence in the coolant. These inserts are preferably of a material more readily ionizable than that of the tubes whereby any tendency to galvanic corrosion, will erode only the inserts. The coolant is maintained at a higher pressure than that of the container liquid to prevent the entry of corrosive liquid into the tubes in the event of leakage. The tubes and headers are of stainless steel and may be lined with copper.
Patent GB-518998-A (GB)
Abstract: 518,998. Ethers. USINES DE MELLE. Oct. 4, 1938, No. 28803. Convention date, Oct. 27, 1937. [Class 2 (iii)] In a continuous process for the production of aliphatic ethers from the corresponding alcohols, the alcohol is subjected to an acid dehydrating treatment of such a nature that a relatively large proportion of olefine is produced, and this olefine is recovered, converted into alcohol, and the alcohol so obtained is returned to the reaction vessel. In the apparatus shown, for producing isporopyl ether from isopropyl alcohol, the alcohol and sulphuric acid, in the proportion of 330 kgs. of the latter to each ton of the former, are boiled in a reaction vessel 1 heated by a coil 10. The vapours issuing from the vessel 1 are passed into a distilling column 3, and a ternary mixture of water, alcohol and ether is condensed in 4, from which the greater part of the distillate is passed to a decanter 5, where the liquid separates into two layers. The bottom layer, comprising chiefly water and alcohol, is passed to a distilling column 6, from which the alcohol is condensed in 15 and led back to the reaction vessel 1 through a pipe 16, while the water is removed from the bottom of the column by a pipe 14. The top layer in the decanter 5, consisting chiefly of ether with a small proportion of alcohol, is partly returned to the distilling column 3, while the remainder is passed to a small accessory column 7 from the base of which the pure isopropyl ether flows away through the pipe 20. The vapours from the column 7, after condensation in 21, are returned to the top of the main column 3 through the pipe 18. The propylene formed in the reaction passes from the condenser 4 to a tower 8, where it is absorbed in cold concentrated sulphuric acid supplied from a tank 28. The acid isopropyl sulphate passes from the bottom of the tower 8 to a heated column 9, where it is decomposed and the isopropyl alcohol formed is condensed in 31 and returned to the reaction vessel, together with further quantities of the alcohol from a tank 2.
Patent GB-1400082-A (GB)
Title: Rack-and-pinion steering gears particularly for motor vehicles
IPC: B62D3/12
Filed: 1972-11-10
Abstract: 1400082 Toothed gearing ZAHNRADFABRIK FRIEDRICHSHAFEN AG 10 Nov 1972 [26 Nov 1971] 51932/72 Heading F2Q [Also in Division B7] A rack and pinion steering gear includes a gear easing 2, 3 a rack 1, and a guide bush 5 at one end of the casing 3 which prevents lateral or radial movement of the rack 1 but will allow angular deflections of the rack 1 due to lateral loads. As described the guide bush 5 is located in a stepped bore 7 in an end sleeve 3 of the gear casing. A flange 6 integral with the guide bush 5 prevents lateral movement of the rack 1. A rubber sleeve 10 is vulcanized to the guide bush 5 and a part 12 of its outer surface is provided with longitudinal grooves and a part 11 tapers conically. The rubber sleeve 10 is an oversize fit in the bore 7, and the bush 5 and sleeve 10 are retained therein by ring 13 held between the end sleeve 3 and the cylindrical tube 2 of the gear casing. The rubber bush 10 allows angular deflection of the rack 1. A sealing ring 9 is retained between the flange 6 and a shoulder in the bore 7. In the case of a mechanical steering gear the seal 9 is a grease seal, and in the case of a hydraulically assisted steering gear, in which the gear casing 2, 3 is used as a servo cylinder, the seal 9 is a high pressure seal.
Patent GB-1484768-A (GB)
Title: Reinforced double-fenestrated surgical drape
IPC: A61B19/08
Filed: 1975-12-22
Abstract: 1484768 Surgical drape AMERICAN HOSPITAL SUPPLY CORP 22 Dec 1975 [17 Jan 1975] 52338/75 Heading A5R A surgical drape comprises two rectangular sheets of non-woven cellulosic material aligned about an axis 17a and secured together by adhesive 19 in an overlapping region 16a each sheet being formed with a fenestration 20, 21 aligned along the axis 17a and having one edge coincident with the edge of the sheet in which it is not formed. The edges of the fenestrations are formed by folding over the sheet material and reinforcing panels 22, 23 may be applied around them. The sheet material is preferably air permeable water resistant paper.
Patent GB-523783-A (GB)
Abstract: 523,783. Bakers' &c. ovens. POINTON, J. E., DUMBLETON, C., and BAKER PERKINS, Ltd. Dec. 16, 1938, No. 36750. [Class 51 (ii)] In a bakers' or like oven more particularly of the swinging tray conveyer or drawplate type the baking chamber is heated by Perkins or like tubes projecting into one or more flues closed from the baking chamber and forming part of a closed circuit through which combustion products from a furnace exterior to the baking chamber are circulated. ' Venting means for the gases also are provided. As shown transverse flues 7 out of which project Perkins tubes 28 traverse the baking chamber and are connected by headers 8 and flues in the side walls of the oven, forming part of a closed circuit including a fan 12, to a chamber 16 adapted to, communicate with alternative sources of heat not integral with the oven, e.g., an exterior solid fuel furnace 16 or oil, gas or pulverised fuel burners. The headers 8 may be tapered and dampers may be provided for the inlets of the flues 7. Sets of flues 7 may be disposed at intervals along the oven, each connected to a separate circulating circuit with its own heat source or to a single circuit. Specifications 401,687 and 504,941, [Group XXX], are referred to.
Patent GB-1299233-A (GB)
Title: Method of measuring web tension
Inventor: HERZOFF PETER
IPC: G01L5/04
Filed: 1970-11-04
Abstract: 1299233 Measuring web tension AGFA GEVAERT A G 4 Nov 1970 [15 Nov 1969] 52430/70 Heading G1W The tension of a web 1 passing over rollers 3 and 4 is measured by applying a negative pressure in enclosure 5 to cause the web to curve between the rollers. The negative pressure may be kept constant and the curvature of the web measured to determine the tension. Alternatively the negative pressure may be adjusted automatically by means of fan 6 driven by variable speed motor 9 to maintain a constant curvature of the web, the negative pressure then being a measure of the web tension. The curvature of the web may be determined by a scanning device 2 which measures the depth of curvature. Alternatively, rollers 4 and 5 may be provided with small holes so that the angle of wrap of the web around the rollers, which is a function of curvature, may be determined by connecting the interior of the rollers to a negative pressure measuring system. A control circuit may be provided to control the web tension.
Patent GB-1235633-A (GB)
Title: Improvements relating to umbrellas
IPC: A45B19/10
Filed: 1969-10-27
Abstract: 1,235,633. Umbrellas. BREMSHEY & CO. 27 Oct., 1969 [28 Oct., 1968], No. 52554/69. Heading A4P. A folding umbrella, which when folded has a generally rectangular cross-section transverse to the stick axis, has ribs (7), Fig. 1 (not shown), each formed in three sections, two of which, 7<1> and 7<11>, telescope together and a third 7<111> which is attached by a hinge 10 having a free end 19 to the part 7<1>, the hinge being tapered towards its end 19 and of generally U-shaped cross-section, the arrangement being such that in the collapsed condition each end 19 protrudes below the lower face of the main slider 4 and is received in a dish-shaped handle, the inner walls of which are flared outwardly in the upward direction. The handle 1 is attached to the telescopic stick 2 by means of a pin 15 and has a dome 12 which terminates substantially in the plane of the upper edge of the handle wall. Each hinge has a pin 11 which is at a distance from the end 19 of member 10 which is greater than the internal height of the handle wall. In folding the umbrella, rib sections 7<1> are pushed into section 7<11> and folded so as to lie close to the telescopic stick 2, sections 7<111> being folded back so that the rib tips 20 are held adjacent the rim of the generally rectangular crown 3, and the stick is telescoped in so that the rim of handle 1 encloses the tapered parts 10<1> of hinges 10. The umbrella is provided with an auxiliary slider 6 located between the main slide 4 and the crown 3. The upper section of the stick 2 has a cylindrical outer surface and the two lower sections are of hexagonal cross-section.
Patent GB-1494714-A (GB)
Title: Production of chlorocyanuric acids
IPC: C07B61/00
Filed: 1975-12-23
Abstract: 1494714 Di- and tri-chlorocyanuric acids MONSANTO CO 23 Dec 1975 [26 Dec 1974] 52560/75 Heading C2C Di- and/or tri-chloroeyanuric acid is prepared by reaction of cyanuric acid with alkali metal hydroxide and Cl 2  in an aqueous reaction mixture in the presence of a promoter which is a polyoxyethylene or polyoxypropylene a polyoxyethylene-polyoxypropylene copolymer or a compound containing a polyoxyethylene or polyoxypropylene group in the molecule and recovering the acid product from the reaction mixture. The promoter may be a polyoxyethylene, polyoxypropylene or polyoxyethylenepolyoxypropylene copolymer of average molecular weight 1000-6000. Preferably 20-500 p.p.m. of promoter is present based upon the reactor contents. A nonylphenol-ethylene oxide condensate is advantageously employed. In the examples trichlorocyanuric acid is obtained with 4-5% free moisture (c.f. 10-12% by conventional process) and dichlorocyanuric acid with 17% free water (c.f. 26%).
Patent GB-1108868-A (GB)
Title: Process for the electrolytic production of manganese dioxide
IPC: C25B11/04
Filed: 1966-11-24
Abstract: In a process for the electrolytic production of manganese dioxide by subjecting a dissolved manganous salt, e.g. manganous sulphate in a sulphuric acid solution, to anodic oxidation using lead-alloy anodes, the electrolysis is carried out over a period of 7 to 40 days and the anodes are replaced after they have been used once, twice or three times.  The anodes may comprise alloys of lead, antimony and tellurium or tin.  The anodes, the surface of which should have a mean roughness of 50m  may be formed by remelting and casting of used anodes, e.g. using a crucible mould having smooth, e.g. polished, inside surfaces, the melt being cooled gradually from below to above, and extruding the alloy using substantially burrless, e.g. polished dies.  Electrolysis may be carried out at 80-100 DEG C. using a current density of 0.5-1.5 amps/sq. dm.