baber/WOPTO huggingface dataset:
Patent GB-826817-A (GB)
Title: Improvements in or relating to electrical connectors
Inventor: WARWICK WILLIAM ARTHUR
IPC: H01R13/627
Filed: 1958-02-21
Abstract: 826,817. Two-part couplings. BELLING & LEE Ltd. Feb. 21, 1958, No. 5651/58. Class 38 (1). A pair of interfitting sleeves 1, 14 of resilient insulating material such as nylon are retained together by a protuberance 18 on one sleeve snapping into an enlargement 6 in a longitudinal slot 5 in the wall of the other sleeve, thereby forming an enclosure for a contact 9 having at one end a pin 10 which projects through a hole 3 in one closed end of sleeve 1 and at the other end either a soldering socket 11 or a socket contact. Fig. 3 shows a connector in which the contact has a socket contact 23 at its inner end and also a reduced central portion 26 to which may be attached a wire 17 inserted laterally into the connector through the slot 5. A multicontact connector may be formed by integrating, say, two sleeves 1, 1<SP>1</SP>, as shown in Fig. 7, and integrating a pair of sleeves 14, 141 for co-operation therewith to enclose a pair of contacts 10, 10<SP>1</SP>. The outer ends of sleeves 1, 11 have a skirt 30 formed integral therewith. This Figure also shows an adaptor for co-operation with the pins 10, 10<SP>1</SP> and which may be fixed to a printed circuit panel. The adaptor comprises a nylon body 33 containing socket contacts 37, 37<SP>1</SP> having pins 41, 41<SP>1</SP> projecting from the lower face of the body. The skirt 30 embraces the body 33 when the two coupling members are connected together.
Patent GB-699362-A (GB)
Title: Manufacture of keto-cyclopentanopolyhydrophenanthrene compounds
IPC: C07J1/00
Filed: 1951-03-08
Abstract: The invention comprises 17-keto-10 : 13-dimethyl - cyclopentanopolyhydrophenanthrene compounds which contain a double bond in one of the positions 7 : 8, 8 : 9 or 8 : 14 and may contain further double bonds, and their preparation by subjecting an aliphatic three-carbon carboxylic acid which contains in b -position a 2 : 13 - dimethylhydrophenanthryl - (1) radical, the nucleus of which corresponds to the formula <FORM:0699362/IV (b)/1> and contains a double bond in one of the positions 1 : 2 or 2 : 3 and may contain further double bonds, to an intramolecular acylating operation using as acylating agent tin tetrachloride, zinc chloride or boron trifluorideetherate.  Compounds may be prepared in addition which contain in the 3-position a keto group, a hydroxyl group or a substance convertible by hydrolysis into a hydroxyl group and may be further substituted in the 11- or 12-position and may contain a further double bond in the 4 : 5 or 5 : 6 position.
Patent GB-669224-A (GB)
Title: Improvements in systems of centralised remote control by carrier currents superposedon electrical energy distribution networks
IPC: H02J13/00
Filed: 1950-03-07
Abstract: 669,224. Signalling over power circuits. COMPAGNIE POUR LA FABRICATION DES COMPTEURS ET MATERIEL D'USINES A GAZ. March 7, 1950 [March 7, 1949], No. 6747/50. Class 40 (iv). In a system of remote control by carrier currents over a power network, including a condenser 3 for power factor correction, an inductance 4 is connected in series with the condenser to form a circuit tuned to a frequency well below that used for signalling and a second condenser 5 is connected to form, with the inductance, a stopper circuit tuned to a frequency slightly below the signalling frequency so that the deleterious effects of the condenser 3 are obviated and the stopper circuit provides a " leading " load at the signalling frequency in order to compensate for voltage drops due to the reactance of the supply transformer. In a modification, Fig. 3, the inductance 6 comprises an auto-transformer and the condenser 5 is protected by a spark 7. In a system using a plurality of signalling frequencies the stopper circuit is tuned to a frequency slightly lower than the highest frequency.
Patent GB-101262-A (GB)
Title: Improvements in Vehicle Bodies.
Inventor: THOMAS DAVID WILLIAM
IPC: B61D11/02
Filed: 1916-04-20
Abstract: 101,262. Thomas, D. W. April 20, 1916. Carts and wagons; bodies; doors.-A colliery tram or other railway or road vehicle has the sides, ends, and bottom A, B, C formed from a single seamless sheet of steel plate with stiffening- corrugations D. A stiffening-plate E connects the ends A and is welded thereto by flanges E'. The doors F are hinged at H and secured against the plate E by fastenings J, and are given a dustproof fit by engagement with flanges B' of the sides.
Patent GB-102781-A (GB)
Title: A Method of and Means for Illustrating by Models the Forms of Crystals.
Inventor: HOSALI NINA MOTI
IPC: G09B23/26
Filed: 1916-04-25
Abstract: 102,781. Hosali, N. M. April 25, 1916, Models.-A model of a crystal is formed by silk or other threads attached to a wire skeleton frame enclosed in a glass casing. Two or more models may be formed by threads of different colours on one wire skeleton, and the casing may represent another crystal form of the same system. Fig. 3 shows three crystal forms D, E, F belonging to the rhombic system, while the casing A represents a rectangular rhombic prism. Axes of symmetry may be shown by wires or threads of contrasted colour, and centres of symmetry may be indicated by beads, as shown at G.
Patent GB-840165-A (GB)
Title: Method of preparing 1,4 trans polyisoprene
IPC: C08F136/08
Filed: 1959-02-23
Abstract: Polyisoprene having a trans 1,4 configuration is prepared by polymerization of isoprene in the presence of an aluminium alkyl, titanium tetrachloride and ferric chloride.  The aluminium alkyl may be the triethyl, tripropyl, tri-isobutyl, tripentyl, trihexyl or triheptyl, the tri-isobutyl being preferred.  For each 100 grams of monomer there may be used 0.5-3.1 g. of aluminium alkyl calculated as tri-isobutyl, 0.05-0.3 g. of titanium tetrachloride and 0.19-0.9 g. of ferric chloride, the molar ratios of Al/Ti/Fe being 6-10/1/1-7. An inert diluent such as pentane, hexane, heptane, benzene or toluene may be used in volume ratios to isoprene of 1-20:1.  Temperatures of 0-90 DEG C. may be used.ALSO:A catalyst for polymerizing isoprene comprises titanium tetrachloride, ferric chloride and an aluminium alkyl, e.g. the triethyl, tripropyl, tri-isobutyl, tripentyl, trihexyl, or triheptyl.  The molar ratios Al/Ti/Fe may be 6-10/1/1-7.
Patent GB-714252-A (GB)
Title: Improvements in or relating to cementitious compositions
IPC: C04B28/02
Filed: 1951-03-14
Abstract: Cemenititous compositions are prepared by hydrating a mixture of one or more hydraulic cements and sand with an aqueous emulsion containing a first, water insoluble thermoplastic polymer derived from a monomer or monomers with an ethenoid linkage, a plasticizer for the first polymer, a non-ionic stabilizer for the emulsion, and a second thermoplastic linear polymer having a short chain with considerable branching that is modified with a drying oil and is incompatible with the first polymer in the aqueous emulsion. The first polymer can be any water insoluble vinyl polymer, e.g. polyvinyl acetate or chloride, or polyethylene or polystyrene. The second polymer can be drying oil modified alkyd resin, coumarone, polypropylene sebacate, or partially polymerized drying oil. Additions present include a calcium sulphate compound, asbestos, oil impregnated cork, driers for the oil modified polymer; and, as plasticizers, tri-cresyl phosphate or dimethyl glycol phthalate; and, as stabilizers, methyl ethyl cellulose, cellulose acetate, glue, water soluble polyvinyl alcohol, and glyceryl borate resin; and pigments.ALSO:Cementitious compositions are prepared by hydrating a mixture of one or more hydraulic cements and sand with an aqueous emulsion containing a first, water insoluble thermoplastic polymer derived from a monomer or monomers with an ethenoid linkage, a plasticizer for the first polymer, a non-ionic stabilizer for the emulsion, and a second thermoplastic linear polymer having a short chain with considerable branching that is modified with a drying oil and is incompatible with the first polymer in the aqueous emulsion. A plaster substance based on calcium sulphate may also be included to counter-act shrinkage.  Other additions include asbestos, oil impregnated cork, pentachlor phenol (used as a fungicide) and driers for the oil modified polymer.  The first polymer can be any water insoluble vinyl copolymer, e.g. polyvinyl acetate or chloride, or polyethylene or polystyrene.  The second polymer can be drying oil modified alkyd resin, bitumen, coumarone, polypropylene sebacate, or partially polymerized drying oil. Plasticizers are tricresyl phosphate or dimethyl glycol phthalate, and stabilizers are methyl ethyl cellulose, glue, water soluble polyvinyl alcohol, glyceryl borate resin, and cellulose acetate. Pigments may also be added.
Patent GB-879050-A (GB)
Title: New derivatives of benzoic acid and processes for their preparation
Filed: 1960-02-22
Abstract: The invention comprises compounds of the formula <FORM:0879050/IV (b)/1> wherein X1, X2 and X3 may be the same or different and represent hydrogen, a non-toxic metal cation, the ammonium radical or the radical of an organic base, for example a trialkylammonium or triaralkylammonium base such as triethylammonium and their preparation by reacting 3 : 5-diaminobenzoic acid or a salt thereof with chlorosulphonic acid in the presence of a tertiary organic base such as pyridine, preferably containing some pyridinium sulphonic acid. Alternatively the compounds may be prepared by reacting 3 : 5-dinitrobenzoic acid with a mixture of a sulphite and a bisulphite. The resulting 3 : 5-disulphamino-benzoic acid is extracted from the reaction mixture by conversion to a water-insoluble organic salt, for example a quaternary salt formed from a long chain alkyl or aralkyl quaternary ammonium derivative, for example N-(p-ditertiarybutylphenoxyethoxyethyl)- N-benzyl-N : N-dimethyl ammonium chloride.  The long chain quaternary ammonium salt may then be converted into products wherein X1, X2 and X3 are hydrogen, a non-toxic metal cation or ammonium by first forming the triethylammonium salt by addition of triethylamine and converting this to the desired products, e.g. the sodium or potassium salts, by double decomposition.
Patent GB-429579-A (GB)
Title: Improvements in milk coolers
IPC: A01J9/04
Filed: 1935-02-26
Abstract: 429,579. Cooling milk. ELLISON, C. E., 6, Smalandsgatan, Norrkoping, Sweden.- (Assignee of Karlsson, Forslund, & Co. ; Soderkoping, Sweden) Feb. 26, 1935, No. 6193. Convention date, Feb. 28, 1934. [Class 29] In a milk cooler of the kind comprising inner and outer corrugated surfaces 2, 1 respectively, forming a space 3 through which cooling water flows, the inner surface is sealed from the atmosphere by being secured to a central tube 4. The cooler is suspended from a perforate milk distributing cup 13 supported by a ring-bracket 14 having arms 27 carrying a cooled milk pan 26 and tubes 15, 20 for the supply and discharge of the cooling water. The milk is supplied to the cup through a strainer 22, while the cooling water is supplied to a central tube 5, provided with perforations 6 at its lower end, through a pipe 16 having a filter 17 and a rubber tube 18. The water flows upwardly through the space 3 and thence through a rubber tube 19 to the outlet pipe 21. In a modification, the cup is supported upon the rim of a can to which the tubes 15, 20 are secured.
Patent GB-1370536-A (GB)
Title: Rotary piston machine
IPC: F01C1/063
Filed: 1972-02-10
Abstract: 1370536 Rotary positive displacement machines F MUNZINGER 10 Feb 1972 6194/72 Heading F1F A rotary piston machine, e.g. a hot gas engine, comprises annular cylinders 1 to 5 each containing a pair of annular segment pistons 7, 8 connected via hubs 9, 10 and coaxial shafts to crank mechanism in a transmission 14, so that as the pistons rotate they are accelerated and retarded in relation to one another to cause working spaces defined between them to expand and contract. The crank mechanism 17 to 20 is connected to a ring 16 the eccentricity of which is adjustable, e.g. by a servomotor-driven eccentric (31) Fig.2 (not shown) to vary the volumes of the working spaces. The crank pins 17 to 20 are angularly adjustable to vary the phase displacement. The drive take-off may be from shaft 12, or from transmission 14 via an adjustable pinion (44) Fig. 5 (not shown). As a hot gas engine operating with air, hydrogen or helium, the machine has cylinders 2 and 3 acting as compressors receiving pressurized gas via water-cooled heat exchanger 35 and delivering the gas via regenerator 41 and heat exchanger 36, where it is heated, to engine cylinders 4 and 5, from which exhaust gas passes via regenerator 41 to heat exchanger 35. Heat exchanger 36 is heated by air heated in a combustion chamber 37, Fig.3 (not shown). Cylinder 1 supplies air to chamber 37 and also may supply a cooling system. In Figs. 6 and 7 (not shown) phase shifting between the warm and cold sides of the engine is effected by angularly adjusting a planet gear assembly engaging flywheels connected to the shafts of the respective sides, the shafts rotating in opposite directions. In Fig.8 (not shown) gearing is provided to enable the warm and cold side shafts to rotate in the same direction. A heat pipe is provided in the warm side shaft for cooling the bearings.
Patent GB-606004-A (GB)
Title: Improvements in push-pull amplifying circuits
IPC: H04N5/08
Filed: 1946-02-28
Abstract: 606,004. Valve - amplifying circuits. PHILIPS LAMPS, Ltd. Feb. 28, 1946, No. 6244. Convention date, July 4, 1941. [Class 40 (vi)] In a class B or class C push-pull amplifier circuit, a variable grid bias increasing with the input to the amplifier is obtained by rectifying the alternating current voltage appearing in the H.T. supply unit to decrease the distortion caused by the voltage drop due to the resistance of this unit. The Figure shows a low-frequency push-pull amplifier comprising valves 5 and 6, the anode voltage being supplied from transformer 9 and rectifying valve 10. A fixed negative bias for valves 5, 6, is derived from transformer 15 and rectifying valve 16. A variable grid bias in opposition to the fixed negative bias is supplied by means of transformer 18, the primary of which is connected between the two secondary windings of transformer 9, and the secondary winding is connected in series opposition with the secondary windings of transformer 15. The opposition voltage supplied by transformer 18 increases as the signal increases, thereby decreasing the negative bias voltage supplied from rectifier 16. Transformer 18 should have a low primary resistance and high transformation ratio, and phase-shifting networks 26, 27, are provided to ensure that the two voltages are exactly in phase opposition. The bias is applied via potentiometers 28 and 29, which should be of high resistance. To prevent overloading of valves 5 and 6, transformer 18 may be arranged to become saturated at the maximum admissible load so that the negative bias is not reduced beyond this point.
Patent GB-1484663-A (GB)
Title: Treatment of smoking material
IPC: A24B15/40
Filed: 1975-02-14
Abstract: 1484663 Tobacco composition F HOFFMANN-LAROCHE & CO AG 14 Feb 1975 [15 Feb 1974] 6275/75 Heading A2C To reduce the nitrogen dioxide content in tobacco smoke, tobacco is treated with either an equimolar mixture of ascorbic acid and a salt thereof, or an equimolar mixture of erythorbic (isoascorbic) acid and a salt thereof or a mixture of the two. Preferably the tobacco contains between 0.1 and 10% by weight of the acid/salt mixture. The preferred salt is the sodium salt.
Patent GB-235309-A (GB)
Title: An improved lock and indicator for holding and locating keys, tools and other portable articles
IPC: G07F17/10
Filed: 1924-03-12
Abstract: 235,309. Falconer, E. A., and Locator Manufacturing Co., Ltd. March 12, 1924. Caretakers; coin-action, thrust. -In apparatus of the kind desscribed in Specification 11233/15 wherein a kev or tool used by a number of persons is retained in a casing and is released by a check bearing a number, the check is inserted to release the key and removed after replacement of the key at one and the same slot and the key is inserted at the front of the casing. The key is attached to the plugs f which, when inserted into the hole e in the front of the casing b, is retained by the engagement of projections k<1> on a pair of levers k. pivoted at h, in the annular recess f<1> of the plug. The end f<2> of the plug engages a spring o at the back of the casing and presses back a U-shaped member n. The key is released by pressing a check d into the hole c in the top of the casing. When its periphery engages the lugs l on the levers k presser, them apart against the springs m, releasing the projections k<1> from the groove f<1>. The removal of the plug allows the spring o to advance the member n so that its arms engage over the check and retain it within the casing. A number or character on the check is visible through a hole g in the casing and indicates which person has removed the plug. The spring o is protected from being forced back by wire to release the check, by a gravity catch q which engages it when the plug is removed and is released by the projection q<1> when the plug is reinserted. The hole e is surrounded by a member s which may be provided with wards requiring slots as f<4> in the kev. The token or check may be crimped requiring a correspondingly shaped slot. The character may be carried by the part projecting above the casing. The levers k give the check an initial upward movement when the check is released by the replacement of the plug.
Patent GB-1180404-A (GB)
Title: Catalytic Purification of Exhaust Gases from Internal Combustion Engines
IPC: F01N3/28
Filed: 1967-02-10
Abstract: 1,180,404. Purifying exhaust gases. PETER SPENCE & SONS Ltd. Feb. 10, 1967 [Feb. 11, 1966], No. 6462 /67. Heading F1B. In a catalytic exhaust purifier having a catalyst bed extending between perforated plates or tubes e.g. inlet tubes 2, 3, Fig. 2 and outlet tube 4, the ratio between the pressured drop produced by the empty container to that produced by the catalyst bed, measured at a flow rate of 4À8 x 10<SP>4</SP> litres of exhaust gas per hour per litre of catalyst, is between 0À5 and 2. In Fig. 2 the exhaust gas enters. the container from both sides through the tubes 2, 3, and the outlet tube 4 is also connected to outlet pipes on both sides. In a modification Fig. 3 (not shown) the catalyst bed is contained between flat perforated plates.
Patent GB-750542-A (GB)
Title: Automatic pilot mechanism for self-propelled vehicles
IPC: B62D1/26
Filed: 1954-03-05
Abstract: 750,542. Automatic steering control systems. OVSHINSKY, S. R. March 5, 1954, No. 6464/54. Class 38 (4). In a system for automatically steering a tractor to cover a field F, Fig. 10, the tractor is started off across the field from position A. As it moves to position B a straight course is maintained by a gyroscope on the tractor operating, through a servo-system, contacts which selectively control a pair of electromagnetically-operated clutches to operate the steering gear in the appropriate direction by coupling it to an odometer wheel attached to the tractor and running on the ground. The odometer wheel also drives, through an electromagnetic clutch, a drum controller a contact segment of which, when the tractor has travelled a distance corresponding to AB, energizes a further electromagnetic clutch to cause the odometer wheel to rotate a table carrying the gyro through 45 degrees. As a result the tractor turns left to a position C. Operation of a limit switch associated with the gyro table then initiates reverse rotation of the gyro table through 225 degrees so that the tractor turns right to a position D. During the turns the drum controller is automatically declutched and a lead-screw clutched to the odometer drive to move the contact finger of the drum controller into engagement with a second contact segment of the drum controller. The latter movement takes place under the control of time delay and position switches. Operation at position D of a second limit switch associated with the gyro table starts movement of the drum controller in the reverse direction and the second contact segment determines the extent of travel, D.E., of the tractor across the field under gyro control. An opposite turn EGH, introducing further limit switches associated with the gyro table, is then automatically carried out in a manner similar to that for turn BCD. Crossing, turning, and re-crossing of the field then continues, a different segment of the drum controller determining the extent of each journey across the field, until, at position Z, a limit switch associated with the drum controller cuts out automatic control. In a modification, Fig. 12, a tractor started at J moves across the field, turns KLM, moves at right angles along the field, turns NOP, recrosses the field, turns QRS, and moves back along the field to V. Further, shorter, circuits are then made until the tractor is at Y. In this arrangement, in addition to the normal drum controller which determines the extent of travel across the field, a further drum controller is introduced having contact segments positioned to determine the variable extent of travel along the field during each circuit. Instead of utilizing the gyro to maintain a straight course across the field, a feeler extending from the side of the tractor and engaging the side of a previously made furrow across the field may control contacts to maintain the tractor at a constant distance from the furrow. Specification 746,623 is referred to.
Patent GB-976555-A (GB)
Title: A device for attaching a torch to a bicycle handlebar
Inventor: LI ERIC FOOK CHUEN
IPC: B62J99/00
Filed: 1962-02-20
Abstract: 976,555. Clamp fastenings; magnetic fastenings. SANCA INDUSTRIES Ltd. Feb. 15, 1963 [Feb. 20, 1962], No. 6471/62. Headings E2A and E2B. A device for disconnectably attaching to a bicycle handlebar 2 a torch of the type in which a permanent magnet is carried in a projection on the torch barrel, comprises a moulded plastic body 4 having a recess 5 therein shaped to receive such a projection, a clamp secured to the body for attachment of the body to the bicycle handlebar and a ferromagnetic member 6 secured in the plastic body in such position that a substantial portion of the bottom surface of the recess is formed by the ferromagnetic member for holding a torch of the type referred to in a required position by the mutual attraction of the magnet and the ferromagnetic member. A spring clip 9 is also located in the recess and arranged to grip the projection of the torch case. The body is made of polyethylene and the spring clip which has four arms 10 for gripping the torch projection is held in place by the ferromagnetic member which has tongues 11 which engage through slots in the clip and slots 12 in the body 4. The body has a cylindrical projection on its underside which is secured in a correspondingly shaped recess 8 of a member 1 of the clamp also made of polyethylene. The clamp member 1 and body 4 are held together by a bolt 3 and nut which also serves to attach the clamp member 1 to the bicycle handlebar 2. Projections (not shown) are provided on the base of the socket 8 and in the projection 7.
Patent GB-661910-A (GB)
Title: Improvements in handles for hollow-ware articles
IPC: A47J45/06
Filed: 1949-03-10
Abstract: 661,910. Making handles. WOOD, W. March 10, 1950 [March 10, 1949], No. 6511/49. Class 83 (ii). [Also in Group XVII] A handle is made by bending strip metal to the shape illustrated, i.e. having a bead 6 at each side of a depressed centre 5 behind which lie extended flanges 7 of the beads.