baber/WOPTO huggingface dataset:
Patent GB-1099896-A (GB)
Title: Encoder for sampled analogue signals
Inventor: GABRIEL MALCOLM EDWARD
IPC: H03M3/02
Filed: 1966-08-02
Abstract: 1,099,896. Encoders. STANDARD TELEPHONES & CABLES Ltd. Aug. 2, 1966, No. 34580/66. Heading G4H. In a non-linear encoder for sampled analogue signals, the analogue input is fed to a first comparator 2 (Fig. 4) and after inverting its polarity to a second comparator 6 for comparison with a reference signal of fixed polarity from a non-linear D-A converter 3, the comparator receiving signals of the same polarity being connected via a switch 8 to the output terminal to transmit a sign bit, followed by a mark or space signal, each time the reference signal is modified, under the control of the comparator output and logic circuitry 4. The logic circuitry also includes means to supply a bias voltage to one of the comparators (Fig. 6) to ensure that when the sampled input is zero the outputs from the comparators 2, 6 are " 1 " and " 0 " respectively. In the embodiment described, the bias voltage is obtained by periodically applying a zero input to terminal 1 and if the outputs of both comparators are the same a bi-stable 11 is set to control a bias circuit 14.
Patent GB-807720-A (GB)
Title: Process for the preparation of aromatic compounds containing mercaptomethyl groups
IPC: C08K5/00
Filed: 1955-12-05
Abstract: A process for the preparation of aromatic compounds containing at least two mercaptomethyl groups as nuclear substituents, comprises heating an aromatic compound containing at least two halomethyl groups as nuclear substituents with thio-urea, adding an alkali, preferably at elevated temperature to the reaction mixture so obtained and liberating the mercaptomethyl compound by acidification. The term "alkali" is defined to mean the hydroxides of potassium, sodium, lithium, rubidium, caesium, silver, calcium, strontium, barium and ammonium.  Starting materials specifically mentioned include bis-(chloromethyl)-naphtholene, bis - (chloromethyl) - tetrahydronaphthalene, bis - (chloromethyl) - anisole, 1,4 - bis - (chloromethyl) - 3,6 - dimethoxybenzene, 1,4 - bis - (chloromethyl) - tetrachlorobenzene, tri(chloromethyl) - benzene and tetra - (chloromethyl)-benzene.  The isothiourea salts, formed during the reaction, may be separated and purified intermediately, if desired. Examples relate to the production of 1,4-bis-(mercaptomethyl) - naphthalene (1); 5,8 - bis - (mercaptomethyl) - tetrahydronaphthalene (2); 2,4-bis - (mercaptomethyl) - anisole (3); 1,4 - bis - (mercaptomethyl) - 2,5 - dimethoxy - benzene (4); 4,41 - bis - (mercaptomethyl) - diphenyl (5); tetrachloro - 1,4 - bis - (mercaptomethyl benzene, the corresponding bis-isothioureas being isolated intermediately.  Starting materials for use in the process are prepared by chloromethylation of benzene, naphthalene, tetrahydronaphthalene or diphenyl or by chlorination of the corresponding compounds containing a plurality of methyl groups. Substituents such as halogen, amino, hydroxy or methoxy may be present.  Specification 783,546 is referred to.
Patent GB-295700-A (GB)
Title: Method of manufacturing rubber articles
IPC: C08J5/02
Filed: 1927-12-23
Abstract: 295,700. Naugatuck Chemical Co., (Assignees of Hazell, E.). Aug. 19, 1927, [Convention date]. Moulding indiarubber.-The rate at which deposits are formed on porous moulds from latex, is increased by the addition of substances increasing the ability of the aqueous portion to filter through the deposit as it forms, and subsequently to dilution, agitation heating. Any of these steps may be employed, but best results are obtained by using them in conjunction. Raw or vulcanized latex may be treated, to which may be added stabilizing agents such as glue, sodium oleate, casein, undecylenic acid emulsion. For increasing filterability, an addition of zinc oxide or salt and a sulphide such as that of sodium, potassium, lithium, ammonium, is made, the best proportions being 0.75-1.1 per cent of a 42 per cent sodium polysulphide solution for untreated latex and 0.1-2.0 per cent of the same solution for vulcanized, creamed, or heavily compounded latex. Other substances increasing filterability are gel-forming colloids, buffer solutions controlling the hydrogen ion concentration, substances liberating metallic ions, and vulcanizing accelerators capable of vulcanizing at low temperatures. The solid contents of the latex should be between 8 and 24 per cent, the optimum being 14 per cent. Agitation of the latex, for example stirring for an hour at a lineal speed of 70 feet per minute reduces the consistency of the mix, and increases the rate of deposition by 125-175 per cent. Heating to a a temperature below that causing coagulation, say 40 C. increases the rate by about 50 per cent. These increases are independent of one another. Numerous examples and tables are given in the Specification.
Patent GB-753599-A (GB)
Title: An improved profiling machine for cutting templates and three-dimensional objects
Inventor: MEDHURST CYRIL WILLIAM
IPC: B23Q35/10
Filed: 1953-12-15
Abstract: 753,599. Copy-milling. VICKERS-ARMSTRONGS (AIRCRAFT), Ltd. Nov. 19, 1954 [Dec. 15, 1953; Nov. 3, 1954], Nos. 34896/53 and 31801/54. Class 83 (3). A machine for profiling a workpiece A according to x, y co-ordinates and shown diagrammatically in Fig. 1, comprises means 214 for traversing a cutting-head 210 in the " x " direction, and a rotating cam 217 which can be shaped to represent the " y " co-ordinates and is connected by a follower 220 with means 219 for moving the head 210 in the " y " direction. A cross-head 213 on the crank 214 runs in fixed guides 237, 238 and the cam-disc 215 carrying the cam 217 rotates once for each halfrevolution of the crank. A slide 211 carries the head 210, the crank 214 and the disc 215. The bar 219, pivoted at 218 to the slide 211, moves the head through a rod 221. The scale of reproduction is varied by adjustment of the length of the crank 214 or the distances 218-221, 221-220. In a practical embodiment, Fig. 3, the crank and disc 215 are driven through gearing by a belt-drive 42 and the movements of the rod 221 are communicated to the tool-head by a follow-up device 64. The shape of the cam-strip 217 is determined by adjustment of threaded swivelblocks 56 and the follower is mounted on a slide 58 having a knife edge 63 to contact the arm 219. The tool-head assembly comprising members 64, 221, cutter-motor 2101 and the cutter 210, can be released from the slide 211 by an eccentric-operating lever 77 and then supported by a peg passed through a hole 79 while the slide is moved transversely to adjust the distances 218-221, 221-63. The workpiece A is adjustable transversely and longitudinally by slides 33, 35. Sectional templates or aerofoils may be cut and the cutter may be of conical form.
Patent GB-455573-A (GB)
Title: Improvements in variable electric inductances for high frequency circuits
IPC: H01F17/04
Filed: 1935-12-16
Abstract: 455,573. Inductances. JOHNSON LABORATORIES, Inc., 609, West Lake Street, Chicago, U.S.A.-(Assignees of Schaper, W. A. ; 5419, Magnolia Avenue, Chicago, U.S.A.) Dec. 16, 1935, No. 34920. Convention date, June 26. [Class 37] A variable inductance for permeability tuning in wireless receivers comprises a long straight multi-layer winding 2 having a length at least four times its diameter, and a core made of finely divided insulated magnetic particles, in the form of a straight rod or bar 4 which is movable into and out of the winding. In the arrangement shown, eight windings 2, each mounted on an insulating tube 3 and associated with an adjustable condenser 16, are mounted on a bed plate 1. The cores 4 are supported on bracket arms 5 which pass through long slots in the tubes 3. The arms 5 are supported by a slide 6 which is adjustable on guide rods 7 by rotating a screw-threaded shaft 11 which engages a nut 12 on the slide. In order to maintain a constant ratio of inductance to resistance in the windings, a soft iron or mild steel pin 23, Fig. 3, is moulded into the end of the core, this pin serving also to secure the core to the bracket 5. Specification 403,426 is referred to.
Patent GB-1013789-A (GB)
Title: Improvements in and relating to magnetic reed relay constructions
IPC: H01H51/28
Filed: 1962-09-13
Abstract: 1,013,789. Electromagnetic relays. AUTOMATIC ELECTRIC LABORATORIES Inc. Sept. 13, 1962 [April 30, 1962], No. 34936/62. Heading H2B. A relay coil former 10, 11, 12 surrounds a magnetic core 23 and has flanges 11, 12 with outer faces adjacent flux concentrators 25, 29 which are secured by screws 34, 36 to the core 23 and which extend over the ends of the sealed magnetic reed contact devices 15 ... 18. Terminal ends 22 of the contact reeds extend through apertures 20 in an extention 13 of the flange 11 and terminal ends 21 extend through apertures 19 in an insulating member 24 secured between the flux concentrator 25 and flange 12. Two or more coils may be wound on the former and one coil may be short-circuited to delay contact operation. A high-carbon steel core may be provided to retain the contacts in the operated position until release by a reverse pulse.
Patent GB-602581-A (GB)
Title: A method and means for making elastic coil cables
IPC: H01B7/06
Filed: 1945-12-27
Abstract: 602,581. Self-coiling cables. COLLINS, R. D., and KELLOGG SWITCHBOARD & SUPPLY CO. Dec. 27, 1945, No. 34966. Drawings to Specification. [Class 36] Elastic coil cables with conductors encased in vulcanizable material are made by coiling the conductors encased in the vulcanizable material in a helix interrupted with straight portions, supporting the uncoiled portions in a straight condition and vulcanizing the cable while maintaining the straight and helical portions in the same relationship.
Patent GB-361605-A (GB)
Title: Metallurgical furnaces
IPC: C22B19/18
Filed: 1930-11-20
Abstract: <PICT:0361605/III/1> <PICT:0361605/III/2> <PICT:0361605/III/3> A furnace for the extraction of zinc comprises an externally heated reduction retort and an eliminator for the removal of lead and other contaminating metals from the zinc vapour, communicating with the vapour discharge outlet of the retort and preferably having means for regulating the temperature.  A vertical retort 14, Fig. 1, is supported on the bottom of a furnace structure 10 having ports 19, 20 for heating purposes and pyrometer openings 21 the upper end of the retort being surrounded by a casing 30 with a door 32 containing insulating medium for temperature control. The eliminator structure 33 which communicates with the retort by a passage 26 traversed by the zinc vapour comprises an eliminator 34 of heat resistant brick containing eliminating medium 35 which may be removed through a door 37 and through which the vapour passes on its way to the treatment chamber 40, where if desired it may be converted into oxide.  Between the outer casing 43 of variable size and the eliminator is placed insulating material 44 which may be discharged through a door 45 for regulating the temperature in the eliminator.  The retort and eliminator have charging devices 27, 41, with removable caps 29, 42. Spent charge is removed by a revolving platform 23.  The eliminator may be arranged as shown in Fig. 2, the vapour from the retort passing downwards to a collecting chamber 57.  A dry joint 58, such as a telescoping joint, is provided to prevent any movement of the eliminator affecting the retort.  In another modification it may be arranged as a prolongation 59, Fig. 3, of the retort with a dry joint 60, or it may be integral with the retort without a joint, the agglomerated charge of ore and reducing agent acting as eliminating medium on its way to the retort.  The medium may be composed of graphite, charcoal, coal, coke, &c., or silicon carbide, clay refractories, residues, &c.
Patent GB-1242718-A (GB)
Title: Improvements in or relating to graphite moderated nuclear reactors
Inventor: HUTCHEON JOHN MACOLM
IPC: G21C1/12
Filed: 1968-07-22
Abstract: 1,242,718. Moderator structures. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. 30 June, 1969 [22 July, 1968], No. 34972/68. Heading G6C. In a carbon dioxide cooled graphite moderated nuclear reactor, destruction of the methane added to reduce or inhibit corrosion of the graphite, is reduced by controlling the porosity of the graphite moderator by radiolytio oxidation. The inhibitor is first omitted from the coolant to permit radiolytic oxidation of the graphite so as to raise its porosity and hence, also, its diffusivity. As the moderator diffusivity rises, the concentration of methane in the graphite interior rises.
Patent GB-731417-A (GB)
Title: Improvements in or relating to closures for bottles, vials and the like
IPC: B65D51/30
Filed: 1953-12-16
Abstract: 731,417. Stoppers. AVISO AKSJESELSKAP, and COLLETT & CO. AKSJESELSKAP, E. & O. Dec. 16, 1953 [Dec. 17, 1952], No. 35044/53. Class 125 (3). [Also in Group XIII] A bottle &c. closure of polyethylene comprises a cap 2 with integral flange 3 and beading 4 and a portion 5 which co-operates with a part 7 to form a box to contain desiccant, perforations 8 providing communication between the box and the bottle interior and the bead 4 engaging a groove 6 to secure the parts together. In a modification, Fig. 2, for containers having flared necks the part 5 is formed as a flared skirt to fit tightly against the neck 1.
Patent GB-513044-A (GB)
Title: Improvements in or relating to the concentration of aqueous organic acids
IPC: C07C51/48
Filed: 1937-12-20
Abstract: 513,044. Extracting organic acids. BRITISH CELANESE, Ltd. Dec. 20, 1937, No. 35225. Void. Convention date, Dec. 29, 1936. [Class 32] [Also in Group IV] Organic acids, especially acetic acid, are extracted from their aqueous solutions by means of a solvent comprising an ether having at least 5 carbon atoms. The ether may be a secondary ether but is preferably a normal ether such as n-propyl ether or methyl butyl ether. A substance may be added to reduce the solubility of water in the solvent, such as pentane, hexane, heptane, or octane. The extraction may be effected at 20-50‹C. and may be continuous or batch wise. The process may be used for the extraction of formic, propionic and butyric acids, and acids from fermentation of the juices of apples, grapes and the like.
Patent GB-353121-A (GB)
IPC: G03C7/14
Abstract: 353,121. Colour photography. I. G. FARBENINDUSTRIE AKT.-GES., Frankfort-on-Main, Germany. May 8, 1930, No. 14200. Convention date, May 8, 1929. [Class 98 (ii).] In producing single pictures in colours from a lenticular screen film, on a support which is not embossed with refractive elements, the film is illuminated through an objective similar to the lens system by which the original film was produced with the embossed surface of the support facing the source of light. The image may be printed by projection or by contact and a reversal system may be interposed between the objective and the sensitive surface. A diaphragm which masks all but one of the colours of the colour filter may be interposed between the colour screen and the film to produce records of a single colour.
Patent GB-1272683-A (GB)
Title: Filter
IPC: B01D27/06
Filed: 1969-07-14
Abstract: 1,272,683. Filter element. INDUSTRIAL FILTER & PUMP MFG. CO. 14 July, 1969 [14 Aug., 1968], No. 35378/69. Heading B1D. A tubular filter element comprises a filter medium 10 including a thin sheet 14 of porous, non-woven filter material and a grid 12 formed of a semi-rigid thermoplastic bonded over substantially the whole of one surface of the grid to said material to provide an integral structure, said structure being formed into a generally tubular shape and having axially extending pleat portions 24, each pleat portion being formed between a fold 26 at the inner diameter of said tubular shape and a fold 28 at the outer diameter, with said grid being disposed on the inner side of said tubular structure, and an end cap 20, 22 disposed at each end of the tubular structure, at least one of the end caps (20) being apertured. The grid 12 may be formed of an extruded polyethylene, polypropylene or polycarbonate, and may consist of a first plurality of parallel filaments 16 integrally united at the points of intersection with a second plurality of parallel filaments 18 transverse to the said first plurality. The thin sheet may be formed from cotton or polyester fibres; alternatively, it may comprise a sintered, high-density linear polyester. In a preferred embodiment, the grid is, interposed between two sheets of porous.
Patent GB-1175179-A (GB)
Title: Gate Operating Mechanism for Conveying Buckets.
IPC: B65D90/58
Filed: 1968-07-24
Abstract: 1,175,179. Skips for transporting concrete. DOMINION MAGNESIUM Ltd. 24 July, 1968 [4 June, 1968], No. 35423/68. Heading B8H. The doors 15, 16 of a concrete carrying skip are connected by a link 24 which is pivoted at 25 to a projection 26 on the door 16 and to an arm 22 attached to the door 15 at 23. A door opening handle 27 is attached to the door 15 and a spring 29 extends between the handle and the pivot 19 of the door 16. The spring urges the doors towards the closed position. The skip is made from a magnesium alloy.
Patent GB-798013-A (GB)
Title: Improvements relating to cooling and drying thermoplastic film
IPC: B29D7/00
Filed: 1955-12-09
Abstract: <PICT:0798013/IV (a)/1> A liquid cooling medium is applied directly to a thermoplastic film, such as a polyvinyl chloride or polyethylene film, that has been heated to softening temperature and passed on to a finishing roller, whereby the film is cooled and the finish on the film is set while it is still on the roller, suction being applied to the film to remove the liquid medium from the film after it leaves the roller but before it is wound into mill-roll form.  As shown, the film 11 passes over an idler roller 10, around a wrinkle-removing roller 12 and then around a rubber or rubber-covered pressure roller 13 which presses the film against the first of a series of rollers 14-17.  Each of these is maintained at a higher temperature than the preceding roller and the temperature of the film is thereby raised to its softening temperature.  The film then passes around a porous or fabric-covered embossing roller 18, the interior of which is maintained at a sub-atmospheric pressure so as to cause the film to be pulled on to the roller and embossed.  At the same time the film is cooled by means of sprays of water from the perforated pipes 181. Water which drips from the film is caught in a pan below the roller 18 and the film passes over a vacuum or suction take-off roller 19 which removes residual moisture from the film and prevents water from dropping on to the hot film as it approaches roller 18.  The film then advances around idler rollers 20, 21 and after-cooling drums 22, 23, which may be cooled by passing water through them.  The film is next completely dried by passing it across the fixed vacuum or suction tubes 24, each of which has a slot 25 covered with stainless steel wire gauze running lengthwise of its top.  The film next passes over an idler roller 26 and then around a perforated stainless steel vacuum drying roller 27.  Rollers 27 and 19 are similar in construction and are covered with wire gauze.  The film then passes over idler roller 28, a second bank of drying means comprising fixed, longitudinally slotted, suction tubes 29, 30 and a suction roller 32, and finally around idler roller 33 to be wound into a stock-roll ready for use.  The suction rollers and tubes are all connected to the suction side of a blower which has a relatively high capacity and reduces the pressure in the suction line only by about 6 inches water-gauge. The cooling drums 22, 23 may be substituted by a roller partially immersed in a water bath followed by slotted suction tubes disposed on both sides of the travelling film.  Similarly, the film may be cooled during its passage around the embossing roller 18 by partly immersing the latter in a water bath, which replaces the water sprays.  The invention permits the use of water at atmospheric temperature as a cooling medium and dispenses with the use of cooling blankets.
Patent GB-812261-A (GB)
Title: Improvements in or relating to lubricant compositions
Inventor: BOISSELET LEON
IPC: C07F9/22
Filed: 1956-11-21
Abstract: A lubricating composition comprises one or more organic triamidothionophosphates in admixture with one or more mineral or synthetic lubricating oils.  The oil preferably contains 0.1-40 per cent, more preferably 0.5-3 per cent, of the additive.  The latter may have the formula <FORM:0812261/III/1> where R1, R2 and R3, which may be the same or different, are organic substituents, preferably alkyl, such as 2-ethylhexyl, octyl or lauryl, or aryl, such as a -naphthyl.  The lubricating compositions may be obtained either by dissolving one or more triamidothionophosphates in an oil base, or by using the oil as a solvent for the manufacture of the additives.  The triamidothionophosphates may be used in conjunction with other additives such as organic thiophosphates.  The lubricating compositions have good anti-oxidizing, anti-corrosive and extreme pressure properties; these properties are tested on lubricating oil compositions containing the following additives: N-lauryl-N1,N11-dioctyl-, N - octyl - N1,N11 - dilauryl -, N,N1,N11 - tri - 2-ethylhexyl -, N,N1,N11 - tri - a  - naphthyl - and N - lauryl - N1,N11 - di - 2 - ethylhexyl - triamidothionophosphates; in the first three compositions stearylamine may also be present.  In some of the examples, the lubricating oil employed is a blend of castor oil and a naphthenic spindle oil.  Specification 812,262, [Group XXIX], is referred to.ALSO:Organic triamidothionophosphates are used as additives to lubricant oils (see Group III).  They may be represented by the formula: <FORM:0812261/IV (b)/1> where R1, R2 and R3, which may be same or different, are organic substituents, preferably alkyl, such as 2-ethylhexyl, octyl and lauryl, or aryl, such as a -naphthyl. Compounds used in examples are N-lauryl-N1,N11-dioctyl-, N-octyl-N1,N11 - dilauryl -, N,N1,N11 - tri - 2 - ethyl-hexyl -, N,N1,N11 - tri - a  - naphthyl -, and N-lauryl - N1,N11 - di - 2 - ethylhexyl - triamido-thionophosphates. Specification 812,262, [Group XXIX], is referred to.