baber/WOPTO huggingface dataset:
Patent GB-766629-A (GB)
Title: Improvements in or relating to the polymerisation of formaldehyde
IPC: C08G2/00
Filed: 1955-03-23
Abstract: 766,629. Polymerizing formaldehyde. DU PONT DE NEMOURS & CO., E. 1. March 23, 1955 [April 16, 1954], No. 8516/55. Class 2 (6). High molecular weight polymers are made by polymerizing formaldehyde in the presence of a compound of a metal or metal halide and hydrogen, hydrocarbon radicals, oxyhydrocarbon radicals, halohydrocarbon radicals, thiohydrocarbon radicals and acyloxy radicals, admixed, if desired, with another known formaldehyde polymerization catalyst and an antioxidant such as diphenylamine. The polymerization is preferably effected by passing substantially anhydrous monomeric formaldehyde into a liquid hydrocarbon containing the catalyst. Specified metal compounds are benzoyloxysodium, phenyl - lithium, methoxyphenylsodium, decoxysodium, copper mercaptide, copper abietate, copper stearate, methylmagnesium iodide, phenylmagnesium bromide, diethoxymagnesium, calcium hydride, dimethylcadmium, diphenylmercury, aluminium isopropoxide, aluminium stearate, aluminium ethoxide, diphenyl tin, triphenylbismuth, dicyclopentadienyl iron, dicyclopentadienyl nickel, tetraisopropyltitanate, and a complex of tetraisopropyltitanate and ethylacetoacetate. Hydrocarbons mentioned are propane, butane, pentane, hexane, heptane, cyclohexane, decahydronaphthalene, benzene, toluene, and xylene. Other catalysts mentioned are 2- mercaptobenzimidazole, lauryl mercaptan, triphenylphosphine, aliphatic amines and polymeric tertiary amines. The monomeric formaldehyde may be obtained from paraformaldehyde, alpha-polyoxymethylene, formaldehyde solutions, and hemiformals. The polymer may be moulded or made into films, fibres, or filaments. Specifications 752,163, [Group IV (b)], and 753,299 are referred to.
Patent GB-1336681-A (GB)
Title: Turntable device
IPC: A23G9/28
Filed: 1971-03-13
Abstract: 1336681 Turntable device J MacMANUS 13 March 1972 [2 April 1971] 8530/71 Addition to 1303331 Heading A2A A turntable device for use with a machine producing whipped cream or other similar products, and so discharging them downwardly through at least one outlet nozzle, comprises a turntable arranged to support a confection and which is rotatable about a vertical axis, the turntable being constrained by a linear guide to move to and fro horizontally and being driven selectively in two alternative modes. In the first mode a friction wheel engages the underside of the turntable, or a disc coaxial and rotatable with the turntable, at a fixed radial position whereby the turntable is rotated at a constant speed without moving along the guide. In the second mode, a friction wheel engages the underside of the turntable or disc at such an angle that a reaction is produced which moves the turntable along the guide so that the friction wheel engages the turntable and/or disc at a continuously varying radial position and the speed of rotation of the turntable continuously varies. A suitable device is illustrated in Figs. 1 and 3 wherein a turntable 9 is mounted on a spindle 8 which also has fixed to it, a circular disc 27. This disc contacts a friction wheel 28 driven by a motor 31. The spindle 8 is mounted in a guide formed by plates 23 and parallel rods 24, this guide being part of a cruciform carriage 19. This carriage is mounted on the base plate by means of pins 20 in slots 21, thus allowing a limited to and fro movement of the carriage, the degree of movement being shown in Fig. 3 by the arrows 8A. The spindle is fixed to arm 14 which is rotatably connected to arm 15, the latter rotating about pivot 17. A control member, operable by knob 34 which is movable from left to right with consequential movement of spindle 8 from right to left, comprises parallel bars 34 and rod 33 and is pivotally mounted on a post 36 which is itself pivotally mounted on carriage 19. The free ends of the bars forming the part 32 extend and contact the base of the spindle 8. The control member may move in a slot defined by tabs 41 and 42 whose position may be altered by manipulation of the tab 40 and consequential movement of the rod 39. The turntable is driven in the first mode by the arrangement show in Fig. 3 wherein the axis of rotation of the friction wheel 28 has in the vertical radial plane of the turntable parallel to the linear guide. To drive the turntable in its second mode, the knob 34 is pulled outwards so that the carriage moves forward. The axis of the shaft 29 will no longer be in the afore mentioned vertical radial plane. There will consequently be a small component of reaction on the disc 27 and hence the spindle will move slowly along the guide carrying the turntable with it. Hence a spiral configuration may be deposited on a confection.
Patent GB-1033043-A (GB)
Title: Process for producing paraformaldehyde
IPC: C08G2/08
Filed: 1964-02-28
Abstract: Paraformaldehyde, i.e. a polymer of formaldehyde of degree of polymerization from 10 to 100, is prepared by precipitation thereof at 65 DEG  C. or lower from an aqueous solution of formaldehyde of concentration between 40 and 65% and a pH of 8 to 11.  The solution may be cooled from a temperature at which no appreciable polymerization occurs to 65 DEG  C. or lower, the pH being adjusted to 8 to 11 before or after cooling.  The preferred lower temperature is below 40 DEG  C.  The temperature of the solution may at first be too high for precipitation and the solution may be cooled during a first phase in such a way that before the concentration reaches the threshold value for precipitation of paraformaldehyde an amount of paraformaldehyde is formed is immediately precipitated when the concentration exceeds that value, the cooling being continued in a second phase so that further polymerization in the immediately precipitated paraformaldehyde occurs.  Preferred concentrations are 40 to 60% e.g. 55 to 60%, and preferred pH values between 9 and 10. The paraformaldehyde formed may be centrifuged and washed.ALSO:Paraformaldehyde, i.e. a polymer of formaldehyde of degree of polymerization from 10 to 100 is prepared by precipitation thereof at a temperature of 65 DEG  C. or lower from an aqueous solution of formaldehyde having a concentration between 40 and 65% and a pH of 8 to 11. The solution may be cooled from a temperature at which no appreciable polymerization occurs to 65 DEG  C. or lower, the pH being adjusted to 8 to 11 before or after cooling.  The preferred lower temperature is below 40 DEG  C.  The temperature of the solution may at first be too high for precipitation and the solution may be cooled during a first phase in such a way that, before the concentration reaches the threshold value for precipitation of paraformaldehyde, an amount of paraformaldehyde is formed which is immediately precipitated when the concentration exceeds that value the cooling being continued in a second phase so that further polymerization in the immediately precipitated paraformaldehyde occurs.  Preferred concentrations are 40 to 60%, e.g. 55 to 60%, and preferred pH values between 9 and 10.  The paraformaldehyde formed may be centrifugal and washed.
Patent GB-1494501-A (GB)
Title: Fancy yarns and roving therefor
IPC: D02G3/34
Filed: 1975-02-25
Abstract: 1494501 Spinning fancy yarn IWS NOMINEE CO Ltd 25 Feb 1975 [26 Feb 1974] 8693/74 Headings D1F and D1W In the production of fancy, decorative, marl or slub yarn, an array (roving, sliver or slubbing) of relatively short effect fibres is combined with an array of relatively long optionally crimped foundation fibres and the combination is drafted sufficiently to cause the effect array fibres to be separated into distinct portions and then spinning to form a yarn in which such portions are distributed, perhaps randomly along the length thereof Effect fibres which may represent not more than 12% of the total fibre weight are introduced to foundation fibres at a final (gill-box) drawing operation before spinning. The two forms of fibre e.g. keratinous fibre such as sheep's wool, may be of similar or different colour and/or nature and the resultant yarn, heavy or fine, may have the appearance and strength of woollen and worsted yarn.
Patent GB-924324-A (GB)
Title: Racing game
IPC: A63H18/12
Filed: 1961-03-09
Abstract: 924,324. Indoor games. E. J. M. LOMBARD. March 9, 1961 [March 10, 1960], No. 8738/61. Class 132 (2). In a race game having model cars movable on a track by magnets and controllable manually by individual players, each model has associated with it an electric circuit including an indicator scoring credit points or marking penalties, a way of causing the indicator to operate when the model stays beyond, in a certain part of its run, a predetermined speed and secondly a further way of causing the indicator to operate when the model exceeds a predetermined speed. In Fig. 1, reference 1 represents a member in movement fixed in its displacement with the member carrying the driving magnet from the movable piece or model car. Passage of member 1 acts on contact 2 to close circuit a containing electromagnet 3 and condenser 4, electromagnet 3 acting in turn on a contact 5 of circuit b, thereby forming a time-delay relay. Circuit b will only be closed if a contact 6 also actuated by member 1 is operated before contact 5 has re-opened. In circuit b is a similar electromagnet 7 matched with condenser 8 intended to produce in circuit c, which is normally closed, an interruption to stop driving motor 10 of one of the model cars so that if member 1 is operated too rapidly motor 10 is interrupted. Similar circuits operate in other phases of the game.
Patent GB-307638-A (GB)
Title: Improvements in process for the manufacture of moulded pieces by the use of hydraulic binding material
IPC: B28B1/08
Filed: 1928-03-23
Abstract: 307,638. Seailles, J. C., and Soc. Lap. March 23, 1928. Drawings to Specification. Processes; shaking and jigging machines.- Moulded articles are formed from hydraulic substances e.g. cement, lime, &c., by employing a liquid or pasty mixture sufficiently moist to be pressed into a mould. applying rapid and repeated shocks and vibrations to eliminate air pockets and excess moisture, and removing the article from the mould before setting and hardening and allowing setting to take place externally of the mould. Fluid-tight metal moulds are employed and are filled to excess, the excess water being swept off after vibrating treatment; or moulds having a larger number of small, peripheral perforations may be employed. The articles may be discharged by overturning the mould on to a flat plate, and may be reinforced with metal bars &c. Vibration may be produced by electric or pneumatic hammers, shaking tables &c. Reference has been directed by the Comptroller to Specifications 8084/99, [Class 22, Cements &c.], 9543/99, 5881/06, 10602/12, 165,910, 218,760, and 239,576.
Patent GB-1072851-A (GB)
Title: A variable speed-control unit
Inventor: WHITELEY GWYN
IPC: F16H15/12
Filed: 1963-03-06
Abstract: 1,072,851. Variable-speed gearing. CLIFFE & CO. Ltd. March 6, 1964 [March 6, 1963], No. 8870/63. Heading F2D. A disc and roller variable-speed gear for driving cam-operated pneumatic valves of a textile carding machine hopper feed comprises a rubber-faced input disc 112 driving through an adjustable, barrelled or convex surfaced roller 134, made of or faced with rubber or plastics, a similar axially spring-loaded output disc 114 fast on a cam-mounting shaft 106. The roller 134 is mounted for movement in the plane of the disc shafts 104, 106 by a block 128 threaded on a hand ratio-adjusting shaft 122 having limit stops 130, 132. The pneumatic valves (140- 148) are operated through roller cam followers 162.
Patent GB-179908-A (GB)
Title: Improvements in gauges
IPC: G01B5/08
Filed: 1922-03-28
Abstract: 179,908. Krupp Akt.-Ges., F. May 7, 1921, [Convention date]. Linear-dimension gauges.-In a limit gauge of the kind wherein the relatively - fixed contactmember is in the form of a pin adjustable but non-rotatable in the gauge body, the pin E forming the fixed contact-member is of circular section and is mounted in a sleeve F having a coned end f<3>, with a collar f<2> preferably knurled for convenience in turning the sleeve. The end of the sleeve remote from the contact face is internally threaded to engage a thread e<2> on the pin, so that when the sleeve is free the pin may be set by turning the sleeve with the desired gradations e<1> against the sharp edge of the coned end f<3> of the sleeve. The sleeve is formed with longitudinal slots f<1> and is clamped to the pin, after adjustment of the latter, by a gapped ring H. This ring is provided with notches to form abutments h<2>, h<3>, Fig. 2, for an adjustable clamping-screw J and a fixed screw K. A spring G within the socket a<4> of the gaugebody, bearing at one end against a cap e<3> secured to the end of the pin and at the other end against the ring H, prevents play of the screw threads. during the adjustment. The cap e<3> has a lug e<4> engaging a groove a<6> in the socket to prevent the pin from turning. The movable contact-member- or feeler comprises a ball D adapted to ride up a fixed inclined surface a<3> and lift a rod C, from which movement is conveyed to an indicator B.
Patent GB-630031-A (GB)
Title: Improvements in or relating to valves for controlling the flow of fluids
IPC: G05D16/10
Filed: 1947-04-02
Abstract: 630,031. Valves. FLIGHT REFUELLING, Ltd., LEGGE, C. N., and MANNING, W. O. April 2, 1947, No. 8945. [Class 135] In a valve opened by the pressure of inflowing liquid and closed by a piston resiliently connected to the valve and responsive to the pressure in a chamber open at all times to the inflowing liquid and provided with an orifice which can be closed to permit of the build-up of pressure within the chamber, the resilient means permits the valve to open without piston movement on the pressure of the inflowing liquid reaching a predetermined value. As applied to the filling of aircraft fuel tanks, the valve comprises a casing 1, Fig. 1, having inlet and outlet ports 2, 3 respectively and formed with a chamber 7 having an orifice 8 controlled by a buffer 9 carried on the arm 10 of a flaot 12 which rises and falls in accordance with the liquid level in the tank. The chamber 7 houses a piston 4b provided with a slidable tubular member 6 carrying a valve closure member 4a. Springs 5 normally hold the valve and piston in spaced relationship with each other, but permit the opening of the valve with no piston movement on the pressure in the filling hose exceeding a predetermined value when held closed by a light spring 14 and the pressure in the chamber 7 when the tank is full or substantially full. With the tank empty, the orifice 8 is open. On connection of the filling hose the valve 4a is opened and the piston 4b moved downwards against the spring 14 by inflowing fuel which passes into the tank through the outlets 3 and the member 6, whence the float 12 rises. When the tank is nearly full, the orifice 8 is substantially closed by the buffer 9 which permits the build-up of pressure in the chamber 7 to close the valve 4a and stop the high pressure filling of the tank whilst still allowing the final filling through the tubular member 6 and the orifice 8. The orifice 8 may be controlled manually or electrically. In a modification, the buffer 9 is replaced by a round-headed screw which loosely carries a metallic closure member. The outlet end of the member 6 may be provided with a spring-loaded, non-return ball valve.
Patent GB-193727-A (GB)
Title: Improvements in, or relating to, diaphragms in connection with gramophone machines
IPC: H04R7/00
Filed: 1922-03-28
Abstract: 193,727. Bozon, R. March 28, 1922. Diaphragms, construction of; materials for. A tortise-shell diaphragm tapers from a central portion to the periphery, an intermediate zone D being slightly hollowed. Thus the diaphragm is convex at the centre and at the peripheral portion, and somewhat concave at the part D, which is approximately at one-third of the radial distance from the centre. Specification 12221/08 is referred to.
Patent GB-459094-A (GB)
Title: Improvements in or relating to tubes or spools employed as holders for yarns or threads to be wound thereon
IPC: B65H75/12
Filed: 1935-06-27
Abstract: 459,094. Tubes or spools. LOWRY, A. S., Oakwood Mills, Romiley, Cheshire. June 27, 1935, No. 8971/36. Divided out of 444,809. [Class 120 (iii)] Tubes or spools having a tubular barrel with a frusto-conical base comprise a barrel of stiffened paper and a base of wood, the base being formed with a recess into which the reduced end of the barrel is expanded. The bottom of the barrel is expanded against a face 4, Fig. 1, of the recess, the shoulder 3<a> of the reduced portion engaging the upper end of the base, or a metal ring 8, Fig. 2, inserted in the barrel is expanded into a recess 9.
Patent GB-525866-A (GB)
Title: Improvements in or relating to the preparation of nitrogen-containing compounds
IPC: A23J1/10
Filed: 1939-03-21
Abstract: 525,866. Materials for making gas and other products. TENNANT, W. J. (Armour & Co.). March 21, 1939, No. 8988. [Class 55 (ii)] Nitrogen containing compounds in the form of an oily condensate, and a gas containing low boiling hydrocarbons such as ethane or methane, are obtained by the distillation of a mixture of waste protein-containing material such as digester tankage, which comprises dried blood, bits of skin, and carcass residues, and fatty material such as fats, and fatty acids obtained in the refining of cottonseed and other vegetable oils. The mixture is destructively distilled between 250‹ and 350 ‹C. to cause the materials to react. Other materials referred to for use in the process are fish meal, fish oil, palm oil, lard and high grade fats. The oils obtained may be used for insecticides or solvents, and for the preparation of other organic compounds.
Patent GB-1041421-A (GB)
Title: Improvements in or relating to the scoring of thin sheet metal
Inventor: STUCHBERY ARTHUR LESLIE
IPC: B21D51/38
Filed: 1964-03-03
Abstract: 1,041,421. Making tearing lines for opening cans &c. METAL BOX CO. Ltd. Feb. 12, 1965 [March 3, 1964], No. 8993/64. Heading B3J. A method of scoring sheet-metal can-ends &c. 9, Figs. 2 and 3 (not shown), comprises locating the part 9 on an anvil 10 and locally bending the part in the region to be scored, so that the side facing the scoring tool 11 is in tension and the opposite side in compression, as the tool 11 penetrates and scoree the metal. The scoring die 11 is carried by a sleeve 27 slidable on a part 28 which is carried by a crank-driven head 29. The die is held in its locked position (Fig. 3, not shown) by the lower ends 43 of levers 40 on stationary pivots 41, the upper ends of the levers being held apart by toggle links 36 biased by a spring 38. An indexable wheel 17 supports the anvils in holders 21 biased downwardly by springs 23. Above the anvils is a stationary impact ring 18 against the lower surface of which the operative holder 21 may be brought to bear by levers 24, 53 and a link 26 operative by the head 29. After the holder has been raised, contact between the head and a sleeve 35 supporting the links 36 causes the links to free the adjacent ends of levers 40 for inward movement caused when the lower ends of the levers are forced apart by expansion of a spring 31 as this drives the die against the workpiece. Spring-pressed catches 45 engage notches 44 in the levers 40 to prevent their return until the head has been withdrawn. A flange 58 on the part 28 raises the die-sleeve 27, which re-compresses the spring 31. The spring 38 is also compressed against the toggle-sleeve 38, which moves into the toggle-set position only after abutments 50 suspended from the head 29 free the catches 45 from notches 44. The arms 40 now re-lock the raised die. Electromagnetic devices or pneumatic cylinders may be used instead of spring 31.
Patent GB-597046-A (GB)
Title: An improved pump
IPC: F04B53/10
Filed: 1945-04-11
Abstract: 597,046. Flexible chamber pumps. BARR & STROUD, Ltd., and MACGILL, C. D. April 11, 1945, No. 9089. [Class 102 (i)] A pump for liquids carrying grit in suspension comprises a tube 2 of flexible material, such as rubber, supported in a cylindrical recess 1 that has a slot 3 through which may project a plate 4 reciprocated by a crank 6 to compress the tube. An inlet 11 fitted with a valve 12 and an outlet 9 fitted with a valve 10 are provided and the valves 10, 12 are formed from split flexible sleeves.
Patent GB-617260-A (GB)
Title: Manufacture of substituted furo-imidazoles
IPC: C07D491/04
Filed: 1946-03-25
Abstract: Substituted furo-imidazoles of the general formula <FORM:0617260/IV(b)/1> in which R1 represents hydrogen, a carboxyl group or a substituent convertible into a carboxyl group, and X is a whole number from 1 to 6, especially 4, are prepared by subjecting the compound <FORM:0617260/IV(b)/2> to the action of an alkaline substance.  R2 represents an alkyl, aralkyl or aryl radical. Examples of groups convertible to a carboxyl group are aliphatic and aromatic esters, amides including aliphatically or aromatically substituted amides, nitriles, hydroxyl groups, halogen atoms, aldehydes or acetals. In examples: (1) cis-3,4-di-(carbethoxyamino)-2-methyl-tetrahydrofurane is heated with barium hydroxide to give hexahydro-2-oxo-4-methylfuro-[3,4-d]-imidazole; (2) cis-3,4-di-(carbethoxyamino) - 2 - tetrahydrofurane - pentanol is heated with barium hydroxide to give hexahydro-2-oxo-furo-[3,4-d]-imidazole-4-pentanol; (3) 3,4-di-(carbethoxyamino)-2-furane-pentanol is hydrogenated in presence of palladium supported on charcoal until 2 mols. of hydrogen have been absorbed and the product, which contains cis - 3,4 - di - (carbethoxyamino) - 2 - tetrahydro-furane-pentanol, is heated with barium hydroxide to yield hexahydro-2-oxo-furo-[3,4-d]-imidazole-4-pentanol which, on oxidation with alkaline permanganate is converted to hexahydro - 2 - oxo - furo - [3,4 - d] - imidazole - 4 - valeric acid; (4) cis-3,4-di-(carbethoxyamino)-tetrahydrofurane-butanol is heated with barium hydroxide to give hexahydro-2-oxo-furo-[3,4-d]-imidazole-4-butanol which is then oxidized with alkaline permanganate to hexahydro-2-oxo-furo-[3,4-d]-imidazole-4-butyric acid, and (5) cis-3,4-di-(carbophenoxyamino)-2-methyl-tetrahydrofurane is heated with calcium hydroxide to give hexahydro-2-oxo-4-methylfuro-[3,4-d]-imidazole.  Specifications 615,901, 615,908 and 615,909 are referred to.  The Specification as open to inspection under Sect. 91 refers also to a modification in which a compound of formula <FORM:0617260/IV(b)/3> (in which X and R1 have the same meaning as before) is reacted with phosgene or a reactive diester of carbonic acid. This subject-matter does not appear in the Specification as accepted.
Patent GB-1030444-A (GB)
Title: Improvements in video-signals transmission systems
IPC: H04N5/14
Filed: 1963-03-07
Abstract: 1,030,444. Frequency modulation. COMPAGNIE FRANCAISE DE TELEVISION. March 7, 1963 [March 12, 1962], No. 9170/63. Heading H3R. Video colour or other signals for frequency modulating a subcarrier are pre-emphasized as regards higher modulating frequencies but decreased in amplitude for higher modulation amplitudes by an amplitude compressing network preceding a linear frequency modulator, or by a non-linear frequency modulator at the transmitter, a complementary restoring system being used at the receiver. Video signals, after pre-emphasizing, may be passed over a plurality of shunt circuits, each comprising a backbiased diode in series with a resistor, so that modulation peak positive and negative values are progressively decreased by fixed ratio of each succeeding amplitude increase, and the signals thus compressed passed to a multivibrator to modulate its output frequency. At the receiver, back-biased threshold diodes shunt resistors in series with the frequency discriminator output.