baber/WOPTO huggingface dataset:
Patent GB-1000401-A (GB)
Title: Improvements in and relating to lactone polymers
Inventor: COX EUGENE FLOYD
IPC: C08G63/82
Filed: 1962-02-08
Abstract: High molecular weight polyesters are made by polymerizing certain lactones having 6-18 atoms in the ring in the presence of an organometallic compound of formula (a) MR1, where M is an alkali metal and R1 is a hydrocarbon, pyridyl or furyl radical; (b) Ra-M-Rb, where M is a Group II metal (e.g. Be, Mg, Ca, Sr, Ba, Zn or Cd), Ra is a hydrocarbon, pyridyl or furyl radical, and Rb is a hydrogen or halogen atom or a hydrocarbon, secondary amino, hydrocarbyloxy, pyridyl or furyl radical; or (c) R1-M-R112, where M is a Group IIIB metal (e.g. Al, Ga or In), R1 is a hydrocarbon radical free of ethylenic or acetylenic unsaturation and each R11 is a hydrogen or halogen atom or an alkoxy, aryloxy or hydrocarbon radical free from ethylenic or acetylenic unsaturation.  The lactones have the formula <FORM:1000401/C3/1> where each R is hydrogen, halo, alkyl, aryl, alkaryl, aralkyl, cycloalkyl, haloalkyl, alkoxy alkyl, alkoxy or aryloxy; A is an oxygen or sulphur atom or a divalent saturated aliphatic hydrocarbon group; and x is 1-15, y is 1-15 and z is 0 or 1; with the provisos that (a) the total number of organic substituents attached to the carbon atoms in the lactone ring does not exceed 4, (b) from 2-4 continuously linked carbon atoms contained in the lactone ring can represent a portion of a saturated cycloaliphatic hydrocarbon nucleus containing 4-10 carbon atoms and (c) the four R variables attached to any two adjacent carbon atoms in the lactone ring can represent a portion of an aromatic hydrocarbon nucleus which is fused to the lactone ring.  Polymerization is preferably effected at - 40 DEG  to +250 DEG  C. in an inert atmosphere and in the absence of water, carbon dioxide, aldehydes and ketones by a batch or continuous process. Bulk, suspension or solution polymerization may be used.  The polyesters may be used in the preparation of cosmetics, polishes, waxes, thickening agents for lubricants, sizes for celluolic materials, anti-static agents, protective coatings and impregnants, oil additives, shaped articles, fibres, films, binders for "green" linoleum, adhesives for vinyl resin sheets and plasticizers for polyvinyl chloride. Examples describe the polymerization of epsilon-caprolactone, mixed methyl substituted epsilon caprolactones, zeta-enantholactone, mixtures of epsilon-caprolactone and delta-valero lactone, beta - methyl - delta - valerolactone, 2 - keto - 1,4 - dioxane, and mixtures of epsilon-caprolactone and mixed methyl substituted epsilon-caprolactones.
Patent GB-155482-A (GB)
Title: Improvements in or relating to tyres
IPC: B60C7/16
Filed: 1920-02-17
Abstract: 155,482. Ingenhof, J. Feb. 17, 1920. Metallic spring bodies and cores; rims.-The inner tube of a tyre 7 comprises a circumferentially slit steel tube 8, the ends of which do not meet. The circumferential slit is covered by a steel band and the tube is slotted at 11 to increase the flexibility. The rim comprises two parts 1, 2 secured by screw nipples 3 on the spokes 5. The nipples slide in bayonet-joints 6 so that the rim can be disconnected.
Patent GB-1000432-A (GB)
Title: Supplemental air system for internal combustion engines
IPC: F02M23/12
Filed: 1962-02-08
Abstract: 1,000,432. Treating charge of I.C. engines. L. T. BARNES. Feb. 8, 1962, No. 4981/62. Heading FIB. An extra-air system for a multi-cylinder engine comprises an air addition device 40a mounted in each cylinder inlet 59, the flow of extra-air being controlled by a regulator 20 actuated by the suction in a Venturi 40 situated between the carburetter outlet and manifold inlet. The regulator 20 comprises a piston 33 operated by the difference in pressure between pipe 43 connected to the throat of Venturi 40 and pipe 45 connected to the carburetter outlet above Venturi 40, which piston operates a piston valve 34 controlling apertures 46 through which extra-air, supplied through pipe 11, flows to the devices 40a. Each Venturi 40 or 40a comprises a throat member 60 mounted in a recessed interconnector 72 which seats in a flange member 70. The throat 60 is connected through orifices 69 to a passage 81 connected to the pipes 43 or 54 and unvaporised fuel collecting in a recess 57 is drawn off through orifices 58. The orifices 46 are graduated in size and valves 90, which may be remotely controlled, are provided in the individual supply pipes 54.
Patent GB-1141100-A (GB)
Title: Improvements in and relating to the determination of chorionic gonadotropin
Inventor: FOSSEL ERIC THOR
IPC: G01N33/76
Filed: 1966-03-31
Abstract: 1,141,100. Determining chorionic gonadotrcpin. UNIMED, Inc. 31 March, 1966, No. 4997/68. Divided out of 1,129,829. Heading B1X. Chorionic gonadotropin in solution is determined by contacting the solution with a known amount of chelating agent for Mg<SP>++</SP> and an indicator changing colour at pH 7-9, and if necessary to produce a colour change, titrating the solution with a base. The known amount of chelating agent is equal to or greater than that quantity which is required to chelate all the Mg<SP>++</SP> derived from the lowest concentration of chorionic gonadotropin which it is desired to detect. As described, the method is used to determine pregnancy by testing the urine of female animals. Specified chelating agents are ethylenediaminetetraacetic acid disodium or dipotassium salt and nitrilotriacetic acid dipotassium salt. Specified indicators are α-naphthaphthalein, cresol red, cresol purple, thymol blue, xylol blue and α-naphtholbenzein. The titration may employ sodium, potassium, lithium or ammonium hydroxide, ammonium salts, amides or cyanides.
Patent GB-1519778-A (GB)
Title: Systems for making and packing cigarettes
IPC: A24C5/35
Filed: 1975-11-26
Abstract: 1519778 Conveyers MOLINS Ltd 26 Nov 1975 [27 Nov 1974] 04997/78 Divided out of 1519777 Heading B8A A system for making and packing cigarettes includes a number of units, each of which comprises a cigarette making machine (not shown) which feeds cigarettes upwards through an elevator 20 to an overhead conveyer 24 which, in turn, feeds cigarettes to shoots 36, 38 leading to two packing machines (not shown), and a further conveyer 40 delivers cigarettes to or from a reservoir 42 of the unit. Surplus cigarettes not required by the two packing machines are fed down a shoot 44 to a transfer conveyer 46 which feeds the surplus cigarettes to a junction with an elevator 48 through which cigarettes from the making machine of the next unit are fed. A potentiometer 45 monitors each reservoir 42 for determining the state of the reservoir and the sections of the transfer conveyer extending between adjacent units are speed controlled so as to tend to equalize the quantity of cigarettes in the various reservoirs. The units are arranged in a closed loop. A second embodiment, Fig. 2 (not shown), is described.
Patent GB-192297-A (GB)
Title: Improvements in box-like show cases having glass fronts
IPC: A47F3/14
Filed: 1922-02-21
Abstract: 192,297. Setten, R. S. Feb. 21, 1922. Fittings, external.-A device for protecting the glass front of a display or show-case, which can also be used for supporting the case in an inclined position, comprises a band d of flexible cardboard, one end of which is secured to the lower edge of the back of the case. The band may be folded over the glass front of the case and secured temporarily in that position by adhesive &c. applied at the loose end d<3> or may be folded, as in Fig. 2, to support the case, the end d<3> being held in position within a bridge-piece f. A layer of corrugated board e may be attached to the portion of the band which protects the glass front of the case.
Patent GB-252260-A (GB)
Title: Improvements in or relating to bituminous emulsions
IPC: C08L95/00
Filed: 1925-02-24
Abstract: 252,260. Hay, G. S. Feb. 24, 1925. Emulsions, making. - Emulsions in water of solid bitumen of the type artificially prepared from petroleum are obtained by mixing with the molten bitumen a dilute aqueous solution of alkali and a proportion, up to about 10 per cent, of an emulsifying agent comprising a resin, resin acid, or resin oil. Preferably the emulsifyng agent and the alkali are added in turn to the molten bitumen, but this order of addition may be reversed, or the emulsifying agent and the alkali may be mixed together before addition to the molten bitumen; alternatively, the emulsifying agent may be dissolved in a solvent, in which case the alkali may be dispensed with. The emulsifying agent may be a gum-resin or the resinous by-product derived from the manufacture of wood pulp or paper, and may be used in admixture with a known emulsifying agent such as a fatty acid or casein. The alkali may be caustic soda, caustic potash, or sodium or potassium carbonate, silicate, or borate. The emulsions may be prepared in apparatus of the colloid mill type. Specifications 28178/10, 202,021, 202,235, and 239,120 are referred to.
Patent GB-451959-A (GB)
Title: A system, or method, of scanning an image: for use in conjunction with any moving spot scanning device, for television or the like
IPC: H04N9/04
Filed: 1935-02-16
Abstract: 451,959. Television transmitters. RICHARDSON, H. A., Darley House, Marlboro' Road, Buxton. Feb. 16, 1935, No. 5017. Addition to 425,660. [Classes 39 (i) and 40 (iii)] An image A<1> B<1> is projected on the emissive surface CA of a photo-electric cell V and is scanned by a spot of radiation of different frequency. If the scanning radiation is of lower frequency, incidence on a bright part produces a small decrease in the current reaching the anode A, and incidence on a dull part produces a large decrease. According to modifications : a plurality of images are used for colour or stereoscopic reproduction, Figs. 2, 7, 8, and 12 (not shown) ; the work factor is decreased by bombarding the rear of the cathode with electrons, Fig. 3 (not shown) ; the scanning radiation is obtained from a cathode-ray tube, Fig. 4 (not shown) ; the tube acts as an electron multiplier, Fig. 9 (not shown), with the image incident on one electrode and the scanning-spot on a second, Fig. 5 (not shown), or the electrode receiving the image is not part of the multiplier, Figs. 10 and 11 (not shown) ; the electrons being focused by a coil, Fig. 13 (not shown), or in the multiplier the electrons oscillate between two electrodes and at the same time move towards an anode Fig. 14 (not shown) ; an electronic image is traversed over a stationary spot of radiation, Figs. 6 and 8 (not shown).
Patent GB-948051-A (GB)
Title: Improvements in insulating tape
IPC: C09J7/38
Filed: 1960-02-12
Abstract: A pressure-sensitive adhesive tape capable of being wound upon itself in roll form and of then being unwound at temperatures as low as -20 DEG C. without delamination or off-setting of the adhesive, and wrapped around splices and wires, and having sufficient elasticity, retractility and adhesion at such low temperatures to remain tightly in place while providing effective electrical insulation of the splices and wires over the range of -20-87  DEG C., comprises (1) a film backing consisting essentially of a stable blend of (a) 100 parts by weight of a polymer of from 90 to 100 parts by weight of vinyl chloride, from 0 to 10 parts by weight of vinyl acetate and (b) 45 to 75 parts of plasticizer, the primary constituent of which is acylated polyester of glycol and dibasic carboxylic acid, at least 90 mol per cent of the glycol being at least one of 1,2-propylene glycol, 1,4-butanediol and 1,6-hexanediol, but not more than 65 mol per cent of the glycol being 1,2-propylene glycol, and at least 90 mol per cent of the dibasic acid being at least one of the group of saturated aliphatic dibasic acids having alkylene chains of 3 to 8 carbon atoms, the said polyester being terminated by acyl radicals containing 2 to 18 carbon atoms and on the average at least 8 carbon atoms and having an average molecular weight of 2250-7000, and an acid number of not more than 3; and (2) a normally tacky and pressure-sensitive adhesive coating united and firmly bonded to one face of the film backing, the adhesive coating comprising a homogeneous blend of (a) 40 to 60 parts natural rubber, (b) correspondingly 60 to 40 parts butadiene-styrene synthetic rubber, (c) 80 to 115 parts pure hydrocarbon thermoplastic terpene resin having low acid number and having a melting point of at least 60  DEG C., and (d) 3 to 16 parts of a compatible, oil soluble, heat reactive, phenol-aldehyde resin.  At least two-thirds of the plasticizer may be the said acylated polyester, the remainder being a polyester of essentially equimolar proportions of 1,2-propylene glycol and dibasic carboxylic acid, at least 90 mol per cent of which is at least one of the group of saturated aliphatic dibasic acids having alkylene chains of 3 to 8 carbon atoms and having an average molecular weight in excess of 7000.  A primer coating which may contain a butadiene-acrylonitrile copolymer, a glycerol ester of a gasoline in soluble resinous extract of pine wood, and a para-tertiary-butyl-phenol-formaldehyde resin, may also be present. The adhesive may contain tackifier resins, plasticizers, e.g. di-2-ethylhexylphthalate, dibasic lead phthalate, reinforcing fillers, e.g. carbon black, calcium carbonate, clay and silica, stabilizers, e.g. epoxidized soybean oil, di-tertiary-amyl-hydroquinone.  All parts and percentages are by weight.  Specification 635,127 is referred to.
Patent GB-1383473-A (GB)
Title: Hearing aid
IPC: H04R25/04
Filed: 1973-02-01
Abstract: 1383473 Hearing aids BOMMER AG 1 Feb 1973 [2 Feb 1972] 5071/73 Heading H4J A hearing aid has two microphones, one having an omni-directional characteristic and the other having a directional characteristic which are selectively connectable to the hearing aid amplifier. The selection may be automatic in accordance with signal level or manual. In a preferred arrangement the two microphones 11, 12, Fig. 5, are arranged in separate chambers 29, 30, in a common housing 27. The omnidirectional microphone chamber has one sound inlet 31, and the directional microphone chamber has two sound inlets 32 and 35, communicating one each side of the microphone diaphragm and with the inlet 35 providing a higher sound attenuation than the inlet 32. The inlets 31, 32, are fed from a common funnel 33. The microphones can be electromagnetic piezoelectric or capacitor types but both of the same type. The amplifier 42 may be an integrated circuit. In an automatically switched system the amplifier (19), Fig. 2 (not shown) has an additional output (24) when the signal level is above a predetermined threshold which is used to provide a switching signal for changeover from the omnidirection to the directional microphone. The switching signal channel may be made frequency dependent.
Patent GB-1155495-A (GB)
Title: Tennis Toy for Playing on a Table
Inventor: HORTA LUIS CONGOST
IPC: A63F7/06
Filed: 1968-01-31
Abstract: 1,155,495. Table-top tennis games. LUIS CONGOST S.A. 31 Jan., 1968, No. 5080/68. Heading A6H. A table-top tennis game comprises a play unit which consists of a substantially spherical element or ball, 4, fixedly connected to a rigid rod, 6, arranged at the central point of a plane, horizontal surface, 2, forming the playing court, the latter being divided into two sides corresponding to the competing players, each side being equipped with a combined intercepting-launching device, 9; the two latter being equidistant from the said central point and connected to a vertical spindle, 13, in a hinged manner, the said spindle being situated at the said central point and the said intercepting-launching devices being connected to the same by means of rigid bars, 12, so that they may be displaced angularly in a plane parallel to the said plane surface and along an arc, by the players involved. The devices, 9, preferably consist of an element, 5, curved to a concave shape and comprise a longitudinal extension equipped at its extremity with a launching knob, 11, the said extension being arranged so as to rock in an opening traversing a vertical branch of the rigid bar, 12. The central point of the .playing court may be a projection, 8, including a groove, 8a, opening outwards at either side in which a horizontal pin or spindle, 7, is secured transversely, the rod, 6, being freely pivotable on the spindle, 7, so that it describes displacements in essentially vertical planes.
Patent GB-1366138-A (GB)
Title: Treatment of lignocellulose materials
IPC: A23K1/00
Filed: 1971-02-24
Abstract: 1366138 Animal feeds UNILEVER Ltd 22 Feb 1972 [24 Feb 1971 14 July 1971] 5275/71 and 33030/71 Heading A2B A mixture comprising a lignocellulose material, for example straw, and a strongly alkaline aqueous solution, having at least 30 wt. % content, is subjected to intense mechanical working at at least 60C to give a feed. The thus-treated material may be neutralised by means of an acid substance, for example an inorganic urea salt such as the phosphate, or hydrochloric or acetic acid, preferably with further intense mechanical working. The feed may be extruded or pelletted.
Patent GB-993107-A (GB)
Title: Improvements in or relating to means for making openings or trenches in the land
IPC: E02F3/18
Filed: 1964-02-10
Abstract: 993,107. Trench digging machines. J. H. SAVILLE & CO. Ltd. Feb. 10, 1964 [May 8, 1963], No. 5440/64. Heading E1F. Means for digging trenches comprises two assemblies which are adapted for successive connection to the dipper stick of a tractor mounted boom and dipper stick mechanism, the assemblies comprising a unit having a pair of rotatable disc cutters for cutting through the top of the earth to be trenched and a bucket unit for excavating out the trench.
Patent GB-1162871-A (GB)
Title: Improvements relating to Electrical Delay Circuits
Inventor: GALPIN ROBERT KEITH PORTWAY
IPC: G11C27/00
Filed: 1967-05-22
Abstract: 1,162,871. Capacitive delay circuits. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. 10 April, 1968 [22 May, 1967; 2 Feb., 1968], Nos. 23682/67 and 5480/68. Heading G4C. [Also in Division H3] In a delay circuit comprising an N-path network, an input switch cyclically stores data in a bank of capacitors connected to the N- paths, and an output switch, operating synchronously with the input switch, reads it out after the required delay. In one embodiment each path includes an input transistor switch TS 1 and an output transistor switch TS2, and in order to minimize discharge of the storage capacitor C3 an emitter follower stage CT is included. The input switches of each path are sequentially operated by switching signals, e.g. SW3 which may be derived from a shift register, Fig. 5 (not shown) and in order to obtain the maximum delay, the control terminal, e.g. SW2 of each output switch is connected to the control terminal of the preceding input switch, Fig. 3 (not shown). Field effect transistors may be used as the switches, Figs. 4, 5 (not shown).
Patent GB-424452-A (GB)
Title: Improvements in the springing of the wheels of motor vehicles
IPC: B60G11/20
Filed: 1934-02-19
Abstract: 424,452. Vehicle spring-suspensions. PORSCHE GES. DR. ING. H. c. F., 24, Kronenstrasse, Unterturkheim, Stuttgart, Germany. Feb. 19, 1934, No. 5501. Convention date, Feb. 18, 1933. [Class 108 (ii)] In vehicles in which the swinging half axles are under the control of torsion springs the latter are disposed at or near to the theoretical axis of oscillation of the half axles. Fig. 3 shows an axle 2 the pivot of which is connected to the bar spring 8 the other end of which is held by a bracket 10 on the frame 7. Fig. 5 shows a half axle 2 universally jointed to the axle casing 3<a> and provided with a strut 2<a> which is connected to one end of a compound torsion spring arranged in the axis of oscillation A. The outer end of the bar spring 8 is held by flutings &c. in a journal 16 integral with the strut 2<a> and is adapted to rotate in a casing 24. The bar spring 8 is surrounded by a helical spring 8<a> which is fixed to the spring 8 at the inner end 18<1>. The end 22 of the helical spring is held to the casing 24 and can be adjusted in relation thereto by means of flutings on the end 22 and on the casing 24 engaging separate flutings on a two-part locking plate 20, 20<1>. Fig. 9 shows another arrangement in which the strut 2a is connected directly to the torsion spring 8 the other end of which is held in a bracket 11.
Patent GB-652884-A (GB)
Title: Improvements in or relating to spray carburettors for internal combustion engines
IPC: F02M1/00
Filed: 1948-02-24
Abstract: 652,884. Spray carburetters. CARTER CARBURETOR CORPORATION. Feb. 24, 1948, No. 5517. Convention date, Dec. 10, 1942. [Classes 7(iii) and 7(vi)] The cylinders of a multicylinder engine are arranged in groups connected to separate intake manifolds 10, 11, Fig. 1, fed by twin carburetters 13, 14 with fuel nozzles 24, Fig. 3, respectively from passages 16, 17, Fig 2, Fuel is metered through orifices 20, 21 controlled by metering valves 39, 43 operated to close the orifice 20 to put the carburetter 13 and manifold 10 out of action at idling and to close both orifices 20, 21 at over-running. A device 305, Fig. 3, is provided which is operated, when the valve 39 is closed, to withdraw fuel from the passage 16, and return it thereto immediately valve 39 is opened, to prevent waste of fuel and to facilitate bringing the carburetter 13 back into action. The'valves 39, 43 carry small magnets 54 to provide a snap-action opening and closing, and the valve-stems 18, 19 are connected through lost-motion connection 41, Fig. 4, to a rod 33 operated by a spring-loaded piston 34, actuated by the suction downstream of the throttle valve 26 transmitted through a passage 37. When the throttle valve 26 is closed for idling the suction, e.g. 10 in. mercury, moves the piston 34 against a spring 38 and carries the valves 39, 43 downwards so that valve 39 closes the orifice 20 and puts the manifold 10 out of action. At a higher suction, e.g. 18 inch mercury, during overrunning the piston 34 compresses a second spring 55 and its lost motion connection with the valve 39 allows it to move down further to cause the valve 43 to close the orifice 21 and put the manifold 11 also out of action. The device 305 comprises a spring-pressed piston 306 which is drawn down by the suction transmitted through a pipe 303 at the instant at which the valve 39 closes, whereby all the fuel in the passage 16, the nozzle 24 and the idling passage 31. Fig. 2, is drawn through the orifice 310 into the cylinder 305. When the throttle valve is opened, the drop in suction allows the valve 39 to open, and the spring 307 expels the fuel from cylinder 305 as a jet through orifice 310, refilling the fuel passages and bringing carburetter 13 straight back into action. The carburetters may include an automatic choke mechanism provided with means holding the throttle valve slightly open at starting and warming up. In this position an arm 49, Figs. 2, 4, rotated by a link 45 from the throttle valve operating mechanism 44 raises the rod 33 and opens the valves 39, 43 so that both carburetters are in operation at starting. Acceleration pumps may be included in the carburetters. Specifications 472,090, 531,244, [Group XXXV], and 652,883 are referred to.
Patent GB-274417-A (GB)
Title: A portable switch or turnout for field railways
IPC: E01B23/06
Filed: 1927-02-28
Abstract: 274,417. Eichelgr³n, M., (trading as Eichelgr³n & Co., M.). July 19, 1926, [Convention date]. Portable railways.-Portable turnouts for field railways comprise rail sections, cross ties, and ramps pressed in one piece from sheet metal. The straight rails 4, Fig. 1, and curved rails 5 are provided with grooves 6 and guards 9 forming rails of S-section connected by ties 7, and terminate in ramps 3. Tongues 2 may be provided. Where only curved rails are provided, Fig. 6, the turnout may be turned in its own plane to serve either as a right or as a left hand switch.