baber/WOPTO huggingface dataset:
Patent GB-267508-A (GB)
Title: Improvements relating to prime mover installations
IPC: F01K3/00
Filed: 1927-03-07
Abstract: 267,508. Rheinische Metallwaarenund Maschinenfabrik. March 9, 1926, [Convention date]. Addition to 226,478. Power generating systems.-In a system of the kind described in the parent Specification, the power of the internal-combustible engine a driving the compressor b connected to the high and low pressure steam and water accumulators l, k is controlled in dependence on the charge in the accumulators. The accumulators l, k are provided with inlet and delivery pipes l<1>, l<2>, k<1>, k<2> respectively connected to valves housed in chamber e, i controlled by a hand-operated shaft m. When a partial or overload of the steam engine g lasts for an unusually long time, the normal, mostfavourable running of the Diesel engine is varied to prevent undue exhaustion or overcharging of the accumulators. This may be done by hand through tooth gearing o, p, q which operates a face cam q which engages a roller on and actuates a shaft y which effects a displacement of a cam shaft with conical cams and varies the fuel injection. The central part of the slot is straight so that fluctuations in the accumulator pressure within a certain mean range do not thereby affect. the engine.
Patent GB-549372-A (GB)
Title: Improvements in or relating to filters for liquids
IPC: B01D35/14
Filed: 1941-05-16
Abstract: 549,372. Filters. MIRZA, R. N. May 16, 1941, No. 6364. [Class 46] [Also. in Group XXVII A filter for electrically non- conducting liquids, particularly the lubricating oil of an engine, comprises two bare wires 34, 35, wound on a hollow perforated insulating spool 10 as a two-start helical winding to form a filtering mesh and connected in circuit with a galvanometer G and a potentiometer 47 so that the circuit is closed when the wires are bridged by metallic particles, the current being proportional to the amount of metal present in the filtrate. A sudden rise in the current indicates an impending engine failure, the potentiometer being adjusted and the series and shunt resistances 50, 51 being selected to keep the current small under normal conditions while permitting a clear indication by the galvanometer should the amount of metal in the oil become abnormally large. The wires may be .028 inch in diameter and the adjacent turns spaced .005 inch apart. The spool 10 may be formed with longitudinal perforated grooves 29 and with entercalatia helical grooves to receive the wires. As shown, the spool is fitted with a cap 20 and is secured with a cover 16, having an inlet 18, on a support 12, having an outlet passage 14, by a bolt 22 having square section portions 28, 27 engaging corresponding. holes in the cover and spool, the opening 21 in the cap being closed by a spring-pressed flanged sleeve 41.
Patent GB-1447317-A (GB)
Title: Optical communications systems
IPC: G02B6/38
Filed: 1974-02-13
Abstract: 1447317 Work benches, assembly tools POST OFFICE 7 Feb 1975 [13 Feb 1974] 06429/74 Heading B4X [Also in Division G2] A tool for use in joining two sets of optical fibres end-to-end is constructed as illustrated in Fig. 1, the members 3 being adapted to engage the side edges of a plate (4), see Figs. 2 to 4 (not shown) bearing grooves (8) in which the fibres (6, 10) lie. To join the fibres, one set is held in position in the grooves, while the other set, supported on the surface 1, is advanced to contact the first set by sliding the tool over the plate (4).
Patent GB-766420-A (GB)
Title: Improvements in or relating to the production of crystal violet lactone
IPC: C09B11/24
Filed: 1955-03-04
Abstract: Crystal violet lactone is prepared by oxidizing 2-[4, 41-bis (dimethylamino) benzohydryl] 5 - dimethylaminobenzoic acid with an aqueous oxidizing medium having a pH above 3 and having in intimate admixture therewith, as a water insoluble phase, a moncyclic aromatic hydrocarbon containing 6-9 carbon atoms, separating said hydrocarbon phase, which contains the crystal violet lactone dissolved therein, from the aqueous phase and recovering crystal violet lactone from the hydrocarbon phase.  Suitable oxidizing agents are potassium permanganate, hydrogen peroxide, potassium dichromate, lead dioxide and manganese dioxide.  The aromatic hydrocarbon may be benzene, toluene, ethylbenzene, o-, m- or p-xylene, isopropylbenzene, or mesitylene, or mixtures thereof.  The intimate admixture of the hydrocarbon and aqueous phases may be effected by efficient stirring or agitation.  On completion of the reaction, any solid material is filtered off and the hydrocarbon phase separated by means of a separatory funnel, decantation or centrifugation.  The crystal violet lactone may be obtained by distilling off the aromatic hydrocarbon which may be followed by addition of a liquid aliphatic hydrocarbon in which crystal violet lactone is insoluble.  The product may also be obtained by extracting the aromatic hydrocarbon solution with an aqueous acid and precipitating crystal violet from the acidic solution by treatment with a base.  Detailed examples are given in which the oxidation is effected with potassium permanganate using benzene, toluene, ethylbenzene, xylene or isopropylbenzene as the hydrocarbon.  In a further example, lead peroxide is used as the oxidizing agent in an aqueous solution of trisodium phosphate and sulphuric acid and toluene is the aromatic hydrocarbon.
Patent GB-223135-A (GB)
Title: Improved endless band grinding and polishing machine
IPC: B24B21/00
Filed: 1924-03-13
Abstract: 223,135. Turner, R. C. March 13, 1924. Band apparatus for grinding and polishing comprises two pulleys f<6>, h over which the band travels, and a table j by which the band is supported beneath the work. The table is adjustable laterally of the band by means of slots j<4>, j<5> in the table and bolts screwed into a slider member c on the machine bed a; this arrangement also allows of removal of the table. The pulley f<6> is formed at one end of a sleeve f<4> having at its other end a driving-pulley f<5> and mounted on anti-friction bearings on a shaft f<3> secured to extensions d, e of the slide member c. The pulley h runs on a shaft h<2>, the ends of which are carried respectively in a member h<3> pivoted at h<5> on a bracket g and in a member h<6> adjustable on the bracket whereby the shaft h<2> may be set at an angle to the shaft f<3>. The bracket g is slidably mounted on a machined iaue c<2> on the member c and is adjusted by a screw i, being secured in adjusted position by a bolt g<4> carried by the bracket and a nut g<5> and clamping-block g<6>.
Patent GB-641579-A (GB)
Title: A new or improved method of connecting lengths of model railway track
IPC: A63H19/30
Filed: 1948-03-02
Abstract: 641,579. Model railway tracks. CLUCKIE, J. L. March 2, 1948, No. 6508. [Class 132 (iii)] Lengths of model railway track are connected by means of projections having portions of differing configurations at one end of the rails interlocking in complementary slots at the end of adjacent rails, and displaceable means for locking these same projections and slots when desired in a manner secure against dislocation arising from the vibration due to passage of trains. As shown, a section of track is formed by rails of bullhead type rivetted to sleepers of pressed metal, each rail being formed at one end with a neck A projecting from the web and terminating in a head of substantially semi-circular shape. At the other end the web is cut away to form a slot of corresponding shape B. Slidably mounted on the webs and lower heads of the slotted end of the rails are two fishplates C, D mounted upon and interconnected by a transverse metal strip E. These fishplates conform in section to the lower half of the rail and fit snugly thereon, the assembly forming a locking member. The fishplates are made so that when the member is slid on to the slotted end of a length of track the limb on the left side of each fishplate F (when looking at the slotted end of the piece of track) is longer than the limb G on the right side, thus enabling the rails to be moved laterally in and out of connection when the locking member is in the unlocking position. The invention may be applied to rolled sheet metal rails, and the projections and slots may be of any formation provided an interlocking relationship can be established. Specifications 380,423 and 399,825 are referred to.
Patent GB-141479-A (GB)
Title: Improvements in jointing pipes
IPC: F16L13/10
Filed: 1919-03-17
Abstract: 141,479. Henderson, J. March 17, 1919. Jointing tools and apparatus; spigot - and - socket joints held by cement and the like.- The lower part of a cement or like joint between a spigot B of fireclay, stoneware, &c. and a corresponding socket C, is formed by the aid of a flexible mould A formed of zinc or other suitable material. The mould A is formed with a flared part A<1> and is held in position by a metal or other band D. The upper part of the joint is completed by a trowel in the usual way. Reference has been directed by the Comptroller to Specification 14630/13.
Patent GB-598558-A (GB)
Title: Polymerization of dimethyl styrenes
IPC: C08F12/12
Filed: 1945-03-15
Abstract: A dimethyl styrene, having the methyl groups substituted in the nucleus and having one of the methyl groups in the ortho position to the vinyl group, is polymerized to a thermoplastic fusible solid. The dimethyl styrene is substantially pure, melts within a range of 3 DEG  C. and has an optical exaltation of at least one, and the polymerization is continued until the intrinsic viscosity is at least 0.1.  Specified styrenes are the 2-3, the 2-4 and the 2-5, dimethyl styrenes.  The polymerization may be carried out by bulk or emulsion technique in the present of peroxygen compounds and promoters at a preferred temperature of from 20 DEG  to 200 DEG  C. Specified dispersing and emulsifying agents are talc, calcium phosphate, styrene-maleic acid copolymers, mimethyl-styrene-maleic acid copolymers, methyl cellulose, methyl starch, glycol cellulose, polyacrylamide, sodium hydroxystearate, sodium lauryl sulphate, the sodium salts of alkyl substituted naphthalene sulphonic acids, the sodium salt of the dioctyl ester of sulphosuccinic acid, dodecylamine hydrochloride, dodecylamine formate and trimethyl benzyl ammonium chloride.  Specification 598,069 is referred to.
Patent GB-812974-A (GB)
Title: Improved process for preparing nitriles
IPC: C07C255/49
Filed: 1956-03-02
Abstract: Aromatic nitriles are made by contacting vapours of the N-formyl derivatives of primary aromatic amines or their nuclearly-substituted alkyl derivatives with a dehydrating catalyst at elevated temperature and at a total pressure between 20 and 200 mm. Hg., or at a partial pressure between 20 and 200 mm. Hg. in the presence of an inert gas. The process may be conducted by distilling the N-formyl derivative under a vacuum of 20 to 200 mm. Hg. or by passing an inert gas such as nitrogen, carbon monoxide or hydrogen through the N-formyl derivative at a temperature such that its vapour pressure is between 200 mm. and 200 mm. Hg., and passing the vapours so obtained over the catalyst which may be of alumina, silica-gel, activated carbon or boron phosphate.  After condensation of the vapours, the nitrile is separated from the amine which is also obtained by extraction of the latter with dilute mineral acid or formic acid.  The nitrile is purified by distillation.  Recovered amine may be reconverted to the N-formyl derivative via the formic acid salt.  The catalyst is reactivated when necessary by heating at 400-500 DEG  C. in a stream of air.  In examples: (1) formanilide vapour under reduced pressure is passed over silica gel to yield aniline and benzonitrile; in a similar manner formyl cumidine (2) and p-methyl formanilide (3) give isopropylbenzonitrile and cumidine, and p-tolunitrile and p-toluidine respectively; (4) p-methyl formanilide vapour and nitrogen are passed at atmospheric pressure over alumina to give p-tolunitrile and p-toluidine.
Patent GB-1010081-A (GB)
Title: Improvements in and relating to broadcast systems
Inventor: BUTCHER RAYMOND ALEC
IPC: H04N7/16
Filed: 1963-02-19
Abstract: 1,010,081. Distributing television &c. R. & R. RESEARCH Ltd. Feb. 13, 1964 [Feb. 19, 1963], No. 6652/63. Heading H4R. In a wired broadcast network such as pay television, in order to assess the audience to a programme, each receiving station is provided with a constantcurrent device which is in circuit only when the reproducer is switched on, and the response at the transmitter is measured when a test voltage is applied to the network. In Fig. 1, programme signals are fed over lines 3, 4 to a reproducer 17 by way of selecting switches 9, 10, and a connecting switch 18 is controlled by a debit-establishing device 19 in which pricing impulses received from 5 through a band-pass filter 21 reduce a credit previously determined from a coin-box 22. Devices 24, 25 ensure that an operated switch 9, 10 remains locked until the end of a selected programme, and is then unlocked by a long impulse. A second switch 23 controlled by the device 19 connects a constant-current device 30 in shunt with the selected programme line through high-frequency chokes 31, 32 and an audio-frequency choke 33. When a given direct voltage is applied, a device 6 measures first the network leakage, and, when the switches 23 are closed in response to pricing impulses, the network load, thus giving a measure of the audience. One form of constant-current device, Fig. 2, comprises a transistor 41, a Zener diode 42 and a number of resistors. It may be desirable to feed the device through a rectifier bridge, Fig. 3 (not shown). Further embodiments are described, Figs. 4, 5 and 6, 7 (not shown), which employ impulses of different character for pricing, for test and measuring, and for unlocking.
Patent GB-1000614-A (GB)
Title: Improvements in or relating to electrical digital data stores
Inventor: RODGERS GERALD PATRICK
IPC: G11C17/02
Filed: 1963-02-19
Abstract: 1,000,614. Semi-permanent data stores. GENERAL ELECTRIC CO. Ltd. Feb. 7, 1964 [Feb. 19, 1963], No. 6653/63. Heading G4A. In an electrical data store discontinuities 7 in one or other side, such as 7a or 7c of loops 4 of a conductor configuration 6 representing a data word, denote binary bits 0 or 1 when a pulse is applied at 33, output pulses being detected on the lines 5 when the pulse passes around a loop such as 91 and none being detected when it passes along a short side such as 93. In an alternative embodiment (Fig. 3, not shown) the loops are joined centrally such that discontinuities in one or other branch of the loops produce output pulses of opposite polarity. The pulse supply may be applied to a winding 44 on a split ferromagnetic ring 45 to induce a pulse in the conductor 43<SP>11</SP> or may be applied direct to the conductor configuration 6 through an integrator. The data words are printed circuits with holes at the discontinuities 7 on an insulated substrate 39 which is slipped between two insulating plates 8, 9 spaced apart by strips 10, 11, 12 and magnetically screened by an outer coating of copper. The exposed surfaces of the read wires 5 and/or the data words 6 are coated with electric insulating shellac. The read wires 5 may be associated with several words as shown or the word configurations may be piled one upon another with independent read wires.
Patent GB-722921-A (GB)
Title: Improvements relating to hand tools for use in operating screws
IPC: B25B23/10
Filed: 1952-03-15
Abstract: 722,921. Band clips. CHENEY & SON, Ltd., C. W., and CHENEY, C. W. Feb. 19, 1953 [March 15, 1952], No. 6765/52. Class 44. [Also in Group XXIII] A hand tool for use in turning the screw or worm of a worm drive band clip comprises a handle 4, having at one end a coaxial cylindrical socket 6, a tooth 7 solid with and axially arranged in the socket, a circumferential groove 9 in the bore of the socket and adjoining the mouth thereof, a resilient, split band 8 engaging the groove, and having its bore projecting into the bore of the socket and the plane of the band being located in an ahead position relative to the tip of the tooth, the band being capable of snap engagement with an annular groove in the head of the screw when the socket is pushed axially over the head with the tooth engaging the groove whereby the tool and screw are joined together as a unit structure. As shown, the handle may be provided with finger pieces 5 or an extension Fig. 5, (not shown) enabling the tool to be used in the manner of a screw driver.
Patent GB-349612-A (GB)
Title: Improvements in or relating to motor driven mowing machines
IPC: A01D34/03
Filed: 1930-02-28
Abstract: 349,612. Mowing-machines. LICHTENSTEIGER, J., Wil-St. Gallen, Switzerland. Feb. 28, 1930, No. 6774. [Class 6 (iii).] The machine comprises a forecarriage c, supported on a front axle band carrving a motor a, to which is rigidly and detachably secured the mowing machine proper. A changespeed gear and differential gear are enclosed in a casing c on the forecarriage and the drive is transmitted to the main wheels by toothed wheels and chains f. The machine is controlled from the usual driver's seat on the mowing machine proper.
Patent GB-1062383-A (GB)
Title: Compressor or turbine adjustable guide vanes
IPC: F01D17/16
Filed: 1966-02-17
Abstract: 1,062,383. Axial-flow compressors and turbines. GENERAL MOTORS CORPORATION. Feb. 17, 1966 [March 3, 1965], No.6960/66. Headings F1C and F1T. Variable-pitch stator blades 24, Fig. 7, of an axial-flow compressor or turbine are journalled at both ends of each blade, the outer journal comprising a disc 45 journalled in a bush 51 in an outer shroud ring 50 while the inner journal comprises a stub shaft (31), Fig. 2 (not shown), journalled in a bush (38) in an inner shroud ring (33), a hook (40) at the inner end of the blade engaging an annular spring (44) to bias the blade inwardly. The ring 45 carries two pins 52, 53 formed with part-spherical heads which snap into respective arcuate, slightly dished slots 60, 62 in a pair of control rings 56, 58. Pins 68, 70, see also Fig. 8 (not shown), on an actuator disc (66) engage the control rings 56, 58 respectively to rotate the control rings in opposite directions about the compressor axis, thereby adjusting the blade pitch. In assembling the vanes 24 to the control rings 56, 58, the control rings are brought together abutting at the plane A-A, with each slot 60, 62 opposite an indentation 61 on the opposite control ring. The blades 24, with their pins 52, 53 initially within the recesses 61, are then turned to snap the pins into the slots 60, 62, and the control rings 56, 58 are then separated to turn the blades to an operative position.
Patent GB-490703-A (GB)
Title: Improvements in or relating to the fractional condensation of volatile liquids
IPC: B01D5/00
Filed: 1937-03-10
Abstract: <PICT:0490703/III/1> <PICT:0490703/III/2> <PICT:0490703/III/3> Liquids are fractionally condensed by passing their vapours through helical condensing coils where they are subjected to progressively lower temperatures.  The vapours are thus fractionally condensed and, as they are simultaneously subjected to centrifugal force in the coils, the condensed liquids are separately collected and separated at different temperatures. The coil is advantageously made of an elongated downwardly directed cross-section as shown in Fig. 2, so that the condensed particles under the action of gravity and centrifugal force impinge on the wall of the tube at an acute angle. The condensed liquids assemble at the tip and are drawn off at intervals through drain pipes such as a7, Fig. 7, which may be furnished with baffles 2.  Various plants embodying applications of the method are described.  As shown in Fig. 1, the liquid to be treated is vaporized in the steam jacketed vessel A.  The vapour is passed down the first separating coil S1 in the vessel A1, when the liquid condensed is separated out by the method described through the drainage pipes a1-h1.  The cross-section of the coil gradually decreases in order to maintain the speed and the centrifugal component.  The heat of the vapours condensed in the spiral S1 is employed to evaporate a second liquid, the vapours of which are passed over to the vessel A1 where they are fractionally condensed in the same manner as in A1.  This method may be extended to as many stages as desirable.  In an extension of the method the vapours of a liquid subjected to fractional distillation in the first vessel of a bank by passing the liquid through sub-chambers heated by steam coils under a continuously increasing pressure are passed to the second vessel of the bank for fractional condensation.  The heat of the vapour condensed is again employed to evaporate fractionally a second liquid to be distilled.
Patent GB-1520331-A (GB)
Title: Bulk packing of tetrahedral containers
IPC: B65D5/36
Filed: 1976-02-23
Abstract: 1520331 Cartons; cartonning TETRA PAK INTERNATIONAL AB 23 Feb 1976 [25 Feb 1975] 07020/76 Headings B8P and B8C A folded carton for containing tetrahedral packages 12 is formed with a rectangular outer shape and an octagonal inner profile and includes two opposed walls each defined by a central portion 2 folded up from a base and outer portions 3 joined to neighbouring walls 1, the central and outer portions 2, 3 being joined, e.g. by gluing or stapling overlapping flaps 6, 7. Slits 9 in the base define portions which may be raised by a mandrel (11), Fig. 3 (not shown) inserted from below to support a bottom layer of packages 12 during filling of the carton.
Patent GB-1382766-A (GB)
Title: Complex of 7-dimethylamino-6-demethyl-6-deoxytetracycline hydro- chloride
IPC: C07C/
Filed: 1973-02-13
Abstract: 1382766 Purifying 7-dimethylamino-6-demethyl-6-deoxytetracycline AMERICAN CYANAMID CO 13 Feb 1973 [11 May 1972] 7044/73 Heading C2C The invention comprises (i) a novel complex of minocycline hydrochloride (i.e. 7-dimethylamino - 6 - demethyl - 6 -deoxytetracycline hydrochloride) and calcium chloride, having the formula wherein n is an integer from 7 to 13; and (ii) a process for purifying minocycline hydrochloride by reacting it in aqueous solution with calcium chloride in a ratio of 0À3 to 1À2 moles of calcium chloride per mole of minocycline hydrochloride at a pH of 3À1 to 4À2 to precipitate the aforesaid complex, separating the complex from the solution and regenerating the minocycline hydrochloride by subjecting the complex to a metathesis reaction. The formation of the complex is preferably effected in the presence of 15-20% w/v. of an ionizable chloride salt (e.g. NaCl) which depresses the solubility of the complex and improves its yield. The metathesis reaction employs an acid forming an insoluble calcium salt (e.g. oxalic, lauric, palmitic, hydrofluoric or tartaric acid), which is removed to leave the purified minocycline solution. Reference has been directed by the Comptroller to Specification 1,003,474.
Patent GB-235639-A (GB)
Title: Improvements in infinitely variable gear
IPC: F16H33/08
Filed: 1924-03-19
Abstract: 235,639. Brooke, H. L. March 19, 1924. Variable-speed gearing. - An automaticallyvariable driving pair comprises centrifugal masses e, f on one element, which present a wave-like peripheral surface e', f<1> to rollers g interposed between the masses and a driven element h. This pair may be a variable-speed gear or may be used to control an epicyclic train. Thus stopped planet gears o, p carried by a driven shaft q may mesh with a sun gear n on the driving-shaft m and with a loose gear d, respectively. The masses e, f are carried by the gear d, and the member h by a drum t against which a disc s upon the planet-carrier is spring-pressed. Reversed driving is stated to be produced when element h is held against rotation.