baber/WOPTO huggingface dataset:
Patent GB-1421075-A (GB)
Title: Bis basic esters of tricyclic ompounds
IPC: C07C213/00
Filed: 1973-12-17
Abstract: 1421075 Bis basic esters of tricyclic acids. RICHARDSON-MERRELL Inc 17 Dec 1973 [21 Dec 1972] 58261/73 Heading C2C Novel compounds of Formulµ I and II wherein n is an integer of from 2 to 6; R and R 1  are each hydrogen, lower alkyl having from 1 to 6 carbon atoms, cycloalkyl having from 3 to 6 carbon atoms, alkenyl having from 3 to 6 carbon atoms in which the unsaturation is in a position other than in the 1-position of the alkenyl group, and when R and R 1  are taken together with the nitrogen atom to which they are attached represent the pyrrolidinyl, piperidino or morpholino radical; Z is oxygen, nitrogen and methylene; Y is nitrogen or methylidene; R 2  is hydrogen or lower alkyl having from 1 to 4 carbon atoms; and the pharmaceutically acceptable acid addition salts thereof, are prepared by one of the following methods: (a) where Z is methylene by action of diazomethane on a fluorene of Formula III: and where Y is methylidene by further action of a diazoalkane; (b) where Z is oxygen by esterification of the compound of Formula VIII: with halogen(CH 2 ) n NRR 1 ; (c) where Z is NH by reaction of sodium azide on a fluorene of Formula III above and where Y is nitrogen by introduction of the ether group R 2 . Fluorenes of Formula III above are prepared by reaction of HO-(CH 2 ) n NRR 1  with 9-oxofluorene-2,7-dicarboxylic acid chloride. The dicarboxylic acid VIII above is prepared by action of H 2 O 2  in concentrated H 2 SO 4  on 9-oxo-fluorene-2,7-dicarboxylic acid. Anti-viral compositions in conventional forms for oral, parenteral or topical administration comprise an above novel compound and excipients.
Patent GB-1187239-A (GB)
Title: Wiper for Thin Layer or Evaporator Tube
Inventor: WULFF CLAUS
IPC: B01D1/22
Filed: 1967-12-22
Abstract: 1,187,239. Screw conveyer. FARBENFABRIKEN BAYER A.G. 22 Dec., 1967 [27 Dec., 1966], No. 58332/67. Heading B8A. Also in Division B1] A thin layer reaction or evaporator tube 1 for use, for example, in the production of polycondensates, incorporates a coreless elastic helical belt 10 having a surface 17 adjacent to the wall of the tube and in operation facing in the downstream direction which surface is inclined to the wall of the tube at an angle of between 5 and 80 degrees. The belt may also have a deflecting surface 19 on the side facing towards the centre of the tube which in operation faces downstream and is at an angle of between 5 and 80 degrees to the wall of the tube. The inclination of surface 17 and/or surface 19 may vary over the length of the belt. Surface 15 of the belt facing the wall of the tube may have step 16 facing in the upstream direction. Reinforcing webs 12 which may be elliptical or convex lens shaped in cross-section may have a pitch in the same direction as, but greater in magnitude than, belt 10 and may be arranged between the turns of belt 2, 10 with their threads further from the wall of the tube than belt 10. Discharge screw 13 may be continuous with belt 10. In the embodiment of Fig. 3 (not shown), belt 10 on the side facing the centre of the tube has a rounded portion 18<SP>1</SP>.
Patent GB-1206193-A (GB)
Title: Method and plant for producing cement
IPC: C04B7/04
Filed: 1967-12-22
Abstract: 1,206,193. Making cement. KLOCKNERHUMBOLDT-DEUTZ A.G. 22 Dec., 1967 [29 Dec., 1966], No. 58355/67. Heading C1H. [Also in Division F4] In producing cement from the gypsum sulphonic acid process in a rotary kiln, the kiln gases flow through a multistage preheater, into the first stage 2 of which a mixture containing the carbon for reduction is introduced, while in the last stage 3 a material containing CaSO 4  is introduced. The first stage mixture also contains ferric oxide, sand and clay. The temperature of this stage can be controlled by introducing CaSO 4  into it, the amount of CaSO 4  in the last stage then being lessened. If anhydrous gypsum is used in the last stage, water is also sprayed in.
Patent GB-1392161-A (GB)
Title: Method of producing ceramics of silicon nitride
IPC: C04B35/584
Filed: 1972-12-21
Abstract: 1392161 Ceramic TOYOTA CHUO KENKYUSHO KK 21 Dec 1972 [21 Dec 1971] 59151/72 Heading C1J A silicon nitride ceramic is made by forming a powdered mixture of 10 to 80 mol per cent Si 3 N 4 , and 20 to 90 mol per cent Al 2 O 3  with optionally up to 70 mol per cent of A1N, sintering the mixture at 1650‹ to 2000‹ C. in a non-oxidizing atmosphere for a time sufficient to dissolve most of the Al 2 O 3  and A1N if present into the Si 3 N 4  in solid phase. The sintering preferably is undertaken at a pressure of 100 to 300 kg./cm.<SP>2</SP>.
Patent GB-1236104-A (GB)
Title: An electric apparatus for heating, melting, welding, soldering and cutting workpieces by focusing radiation from a source thereof at a working point on a workpiece
IPC: H05B3/00
Filed: 1968-08-20
Abstract: 1236104 Soldering; welding by fusion; cutting by fusion MESSER GRIESHEIM GmbH 20 Aug 1968 [18 Oct 1967] 59329/70 Divided out of 1236103 Headings F4W W55 W58 W45D and W21 [Also in Divisions B5 G2 and H5] An electric apparatus for heating, melting, welding, soldering and cutting workpieces comprises a reflector chamber 210 having a focus f 1  located within the chamber and a focus f 2  at a point outside the chamber, a source of radiation e.g. light source, disposed at focus f 1 , an opening 210<SP>1</SP> for the emergence of reflected radiation substantially towards focus f 2 , and a hollow frustoconical attachment 215 connected at its larger diameter end to the chamber at its opening 210<SP>1</SP>, the attachment 215 having a plurality of radial slots 217 on its periphery adjacent said end for the passage of a gas into the interior of the attachment. In use of the apparatus air is drawn into the apparatus through the slots 217 and emerges adjacent focus f 2 , the flow being caused by heating of gases in the interior of the apparatus. For welding or cutting a protective gas or oxygen, respectively, may be introduced into the chamber at 221. Preferably the focus f 2  is substantially in coincidence with the projected point of the attachment 215.
Patent GB-1367148-A (GB)
Title: Machine for resistance butt welding tubular pieces to a sheet and  punching holes in the sheet
IPC: B23K11/30
Filed: 1971-12-28
Abstract: 1367148 Welding by pressure; punching INSTITUT ELEKTROSVARKI IMENI EO PATONA AKADEMII NAUK UKRAINSKOI SSR 28 Dec 1971 60228/71 Headings B3R and B3W A machine for resistance butt welding tubular pieces to a sheet and for punching holes in the sheet comprises a welding head 3 mounted on a frame 1 and having transformers 4, lower electrodes 10 for contacting the sheet, upper electrodes 8 for encircling tubular pieces and a vertically movable beam 7 carrying the upper electrodes and means 9 for clamping a sheet upon the lower electrodes, a punch 12 being located for reciprocation in a vertical through aperture within each lower electrode for punching a hole in a sheet coaxial with a tubular piece. The welding head 3 comprises a fixed lower beam 6 carrying the electrodes 10 above the beam and piston and cylinder devices 14 below the beam, the piston of each device 14 carrying a punch 12 within a passage in an electrode 10. The upper beam 7 is carried on the rod of a piston and cylinder device 5 and the electrodes 8 grip tubular pieces 22. Transformers 4 supply current to the electrodes and the head is mounted on rollers for movement with continuously fed sheet along the frame 1, a ram being provided for return of the head. In operation the fed sheet 21 is clamped against the electrodes by lowering the beam 7 and tubular pieces 22 clamped by the electrodes 8 are welded to the sheet as current flows from the transformers 4. After welding is completed a timer sends a signal to actuate devices 14 to force the punches through the sheet and into the pieces 22. The punches are withdrawn and the upper beam is retracted and the head 2 which advanced with the sheet during the operations is now returned by the return ram. The tubular pieces may be pipes or sleeves forming parts of heat exchangers, gasoline tanks &c.
Patent GB-1348939-A (GB)
Title: Process for the reduction of iron ores
IPC: C21B13/00
Filed: 1971-12-29
Abstract: 1348939 Reducing iron ore NIPPON KOKAN KK and D KUNII 29 Dec 1971 [28 Dec 1970] 60584/71 Heading C7D Fully dried 1 to 15 mm composite pellets of iron ore and solid reducing agent are supplied to the fluidized bed 1 of a three stage reactor, the bed being maintained at 800 - 1100‹C and fluidized by air supplied by blower 16 and heated in exchanger 5 by exhaust gases from the bed. Heat exchanger 5 also supplies air to gasifying furnace 9 where it reacts with oil preheated in heat exchanger 12 to produce reducing gases which are supplied to bed 2 of the reactor, and the gases leaving exchanger 5 may then preheat the composite particles in preheater 6. The reduced particles descend to cooling zone 3, where they are cooled by exhaust gases recycled through heat exchanger 12 and cooler 22.
Patent GB-701246-A (GB)
Abstract: 701,246. Catalytic igniters. BAKER & CO., Inc. Nov. 19, 1951, [Nov. 18, 1950], No. 27136/51. Class 75 (3). A catalytic igniter element 5 formed as a curved coil wire structure catalytically active at least on the surface and having leads 6, 6<SP>1</SP> for insertion into an electric circuit, has the coil of an inner diameter 10 of .007 inch to .015 inch with the turns spaced 10 to 35 turns per inch of its linear length. The wire forming the coil may be single or stranded and the total cross-sectional area of the wire or wires lies within the range of the cross-section of a single wire of from .003 inch to .006 inch diameter. The wire may be formed as a coiled coil the inner diameter 12 of the secondary coil being within the range of .04 to .1 inch and the coil spacing 11 being from 8 to 18 turns per inch of linear length. The wire may be formed from platinum or platinum alloy and the element may be used in a flashback device associated with a gas burner, Fig. 1 (not shown).
Patent GB-754822-A (GB)
Abstract: 754,822. Preserving vegetables, fruit and flowers. GOLD, R. L., and FROESCHEL, P. April 30, 1953 [May 2, 1952], No. 11093/52. Addition to 754,821. Class 49. Apparatus, Fig. 5, for treating vegetables, fruit and flowers by the process of the parent Specification comprises a drum 17 for the plants and water rotatable about a vertical axis and mounted directly upon the vertical shaft 24 of an electric motor 25 below the drum, a drum lid 40 which is airtight when in position, a pump 27 for creating vacuum in the drum, and a valve 58 in a communication 57 of the drum interior with the atmosphere, which valve is closed to allow evacuation of the drum and opened to break the vacuum.
Patent GB-776312-A (GB)
Abstract: 776,312. Inclinometers. KELVIN & HUGHES, Ltd. Dec. 6, 1955 [March 11, 1955], No. 7214/55. Class 97(2) [Also in Group XL(a)] In inclinometer comprises a luminous sphere rolling in a transparent tube. The sphere may be formed of two hollow glass hemispheres having roughened inner surfaces, filled with zinc cadmium sulphide, cemented with " Expoxy " resin and polished.
Patent GB-2000879-A (GB)
Title: Projection of slides with automatic feeding and lap dissolve
IPC: G03B23/18
Filed: 1978-07-07
Abstract: The device 8 is interposed between a two-objective optical system with axes 3,4 and a support 14 provided for the guidance and "pilgrim pace" driving of a single slide magazine 15 containing all of the slides arranged in a row in the order in which they are to follow one another in projection, one objective being above the other and the slides being moved from the magazine alternately to gates on the respective optical axes. <IMAGE>
Patent GB-2002980-A (GB)
Title: Field effect transistor circuits
IPC: H03F3/45
Filed: 1978-07-11
Abstract: The small-current characteristics of the VMOS IGFET are used to provide a self-stabilised circuit having a principal use as an electrometer amplifier of wide dynamic range. A resistive impedance is connected between drain and a power supply terminal, and a DC feedback connection between drain and gate. For an amplifier the latter connection is a resistor RF, and the input current is applied to the gate and flows on through the resistor. With zero input current, the drain stays at a stable self- biased voltage of about 1.0 V with respect to source. An input current causes the drain voltage to change by the product of input current times feedback resistor, the gate remaining at about 1.0 V. The output is conveniently taken between the drains of two similarly connected VMOS's having their voltage by adjustment of the drain currents. Application of the FET with feedback to a timing circuit is also described. <IMAGE>
Patent GB-2002157-A (GB)
Title: Frequency adjustment circuit
IPC: G04G3/02
Filed: 1978-07-18
Abstract: A circuit is provided for adjusting the average frequency of signals supplied by a frequency source, for example, in electronic time keeping devices. This circuit is preferably located between a source of clock pulses and other electronic circuitry utilizing signals from the source so that selected numbers of clock pulses may be added to or subtracted from the clock pulses being supplied to the other electronic circuitry. The circuit for adjusting the average frequency includes a first switching device connected in series with a frequency divider, a second switching device connected in parallel with at least the divider, and a control circuit for periodically opening and closing the first and second switching devices. The switching devices may be NAND-gate circuits. <IMAGE>
Patent GB-2001744-A (GB)
Title: Fluidised bed combustors
IPC: F23C10/00
Filed: 1978-07-26
Abstract: The invention relates to fluidised bed combustors that might tilt in use so that the depth of the bed progressively changes across its width. Air is supplied from two or more sources 10 and means 20, 21 are provided to vary the flow from the sources as the bed tilts so that the air supplied to the portion of the bed of increased depth is increased relatively to the air supplied to the portion of the bed of lesser depth. <IMAGE>
Patent GB-2001218-A (GB)
Title: Improvements in phase shift keyed systems
IPC: H04L27/227
Filed: 1978-07-31
Abstract: An adaptive demodulator for use in a phase shift keyed microwave communication system demodulator improves the system error rate at a particular carrier to noise ratio by monitoring at 6 the output of a demodulating stage 2 or 3 and optimising the phase offset of the carrier signal recovered at 1 in the demodulator to maintain a maximum amplitude output. The variable phase offset device 5 may be a part of or distinct from the carrier recovery arrangement. A particular modification continuously varies the phase offset of a recovered carrier signal about the highest output value to track variations in the optimum phase offset, averages the phase offset and then uses the averaged value to control the phase offset of the recovered carrier signal used in the demodulation. <IMAGE>
Patent GB-2064276-A (GB)
Title: Analogue to digital converters
IPC: H03M7/50
Filed: 1978-12-05
Abstract: A p.c.m. encoder comprises a high accuracy linear A/D converter followed by a digital high pass filter, a d.c. offset circuit and an optional digital compressor. The high pass filter removes any d.c. offset from the encoded signal and the offset circuit then reintroduces a controlled amount of d.c. offset. By this means the performance can be improved especially in regard to idle noise and crosstalk enhancement. <IMAGE>
Patent GB-2043741-A (GB)
Title: Underground mining
IPC: E21C29/08
Filed: 1978-12-29
Abstract: The invention is concerned with underground mine workings, primarily but not exclusively for the mining of coal by the "long wall" system. A coal cutting machine (6) is driven along the wall face (F) by the use of a haulage chain (14) anchored at opposite ends of the face. To avoid the problems associated with the establishment of slack chain behind the machine, take-up means (16, 18) is provided at at least the end of the working from which the machine undergoes a working traverse to remove material from the face. Control means is provided to render said take-up means operative, to take up the slack produced in the chain (14), during such a working traverse of the cutting machine (6), and to render the take-up means inoperative to provide a substantially fixed anchorage on a return traverse of the machine. Preferably such take-up means is provided at both ends of the working. <IMAGE>
Patent GB-2013320-A (GB)
Title: Vehicle headlamp assembly
IPC: F21V11/16
Filed: 1979-01-10
Abstract: A vehicle lamp assembly comprises a reflector 10 having upper and lower paraboloidal portions 11 and 12 separated by a downwardly facing step 13. A filament shield 20 comprises two die cast plate portions 20a and 20b disposed on opposite sides of the halogen bulb filament 15. Upper surfaces 21a and 21b of the portions 20a and 20b are disposed in mutually inclined planes which intersect at the axis of filament 15. Inner edges 22a and 22b of the portions 20a and 20a are disposed as near as possible to the filament and are as thin as possible. Outer edges 23a and 23b of the portions 20a and 20b are thicker than the inner edges 22a and 22b such that they cause substantially no further obscurement of the reflector than that caused by the inner edges 22a and 22b. The plate portions 20a and 20b are shaped and positioned so as to prevent reflections from the envelope 17 and from the step 13 from emerging upwardly from the lamp assembly. <IMAGE>
Patent GB-2015056-A (GB)
Title: Filter Paper
IPC: B01D39/14
Filed: 1979-02-09
Abstract: Mats for filtering gases consist basically of (a) a major proportion of glass fibers composed of a plurality of filaments and about 0.635 cm. long, and intermixed therewith (b) a minor amount of microbits of (i) an expanded thermoplastic styrene-polymer and/or lower polyolefin and/or (ii) a flexible foamed polyurethane, each of the members (i) and (ii) being non-brittle in expanded form, and (c) a minor amount of (i) an organic binding agent insoluble in cold water, but soluble in hot water and inert to the glass fiber and the polymer micro-bits and any other constituent of the mat as well as to the contents of the gaseous and/or vapor stream to which the mat is to be exposed, or (ii) a cobeat of wet lap cotton fibers and micro-bits. A gas separation embodiment of these mats also includes polyester fibers and activated carbon.
Patent GB-2019769-A (GB)
Title: Forming a Seal Between a Metallic Body and a Moulded Plastics Body
IPC: B29C45/14
Filed: 1979-04-23
Abstract: In order to provide a satisfactory bond between moulding material and a tubular metallic body 1, it is arranged that under the moulding pressure by injection moulding either the body itself, as shown, or an elastomeric member (4, Fig. 3, not shown) provided on the body is resiliently deformed to form a gas-tight seal. Hence a seal can be formed without an adhesive connection between the tubular body (1) and the plastics material (2). The member 1 may be a fuel pipe in a vehicle fuel tank. <IMAGE>
Patent GB-2020378-A (GB)
Title: Enclosed lubricating apparatus
IPC: F16N13/16
Filed: 1979-05-04
Abstract: A compact, self-contained lubricating device for lubricating a movable conveyor or other system while the conveyor or system is in operation comprises a pneumatically actuable pump in an enclosure which includes the lubricant reservoir. The pump is actuated by air supplied via a pneumatic valve trip mechanism operated by a component of the conveyor or system. In a first embodiment, a tank enclosure 12 for containing a reservoir of lubricating fluid 18 includes a cover- plate 26 to which is mounted a pneumatically operable pump 32 having an inlet immersed in the reservoir, a manifold 38 with several air and lubricating fluid passageways, an air pressure regulator 36 and a quick air exhaust valve 34. An air valve trip device (14, Fig. 1, not shown) is mounted for actuation by the conveyor system and pneumatically coupled to the pump through the manifold to deliver clean shots of lubricating fluid to the conveyor or system. In a second embodiment, a lubricating fluid reservoir (150, Fig. 9, not shown) is mounted above a control module enclosure (154). The control module enclosure contains a pump, fluid manifold and fluid interconnecting lines to seal these components from any possible destructive environment. A flexible tube communicates the reservoir outlet to the pump inlet. <IMAGE>
Patent GB-2050438-A (GB)
Title: Dyeing and printing processes for cellulosic fibres and their blends
IPC: D06P3/60
Filed: 1979-06-07
Abstract: This invention concerns an improved process for the colouration of cellulosic materials or blends thereof with hydrophobic fibres using a dye of the disperse class which is fixed by a heat treatment in the presence of a water soluble or water miscible compound of boiling point above 120 DEG C and of general formula   <IMAGE> wherein R<1> and R<2> both represent hydrogen or one of R<1> and R<2> represents hydrogen and the other represents an alkyl group,  R<3> is a hydrogen atom or an alkyl group,  m represents 1 or 2  n is in the range of 4 to 25 and  X is the residue of     (i) a monohydric phenol substituted by a C1-8 alkoxy group, (ii) a dihydric phenol which may optionally be substituted with an aryl, aryloxy, C1-8 alkyl, or C1-8 alkoxy group,   (iii) propane-1:3-diol, (iv) a branched or straight chain dihydric alcohol of three carbon atoms which is substituted by aryl or aryloxy groups or (v) a saturated or unsaturated primary, secondary or tertiary dihydric aliphatic alcohol containing at least four carbon atoms and which may be further substituted.
Patent GB-2026392-A (GB)
Title: Printer
IPC: B41J13/00
Filed: 1979-07-11
Abstract: In a printing device for printing information at a predetermined location on a document a single (optical) sensor 90 performs a plurality of functions, including: detection of the presence of a document at the print station 50, thus enabling the print operation to begin; detection of the leading edge of the document and provision of a signal to enable operation thereby providing for positioning of the printing in a predetermined field on the document, detection of indicia on the document in order to position printing on a document at predetermined fields with respect to such indicia, and detecting of trailing edge of the document, to discontinue the printing operation. The alignment of the sensor 90 with a print station 50 and document conveying means (wheel 68) permits printing on documents of different lengths, thicknesses, or widths at precisely determined positions, and minimizes the requirement of using solenoids in the printer. <IMAGE>
Patent GB-2038998-A (GB)
Title: A valve
IPC: F16K3/18
Filed: 1979-08-29
Abstract: A valve comprises a body 1 having an inlet connection 2 and an outlet, connection 3 and a valve seat associated with each of the connections. A displaceable valve element 22 is in sealing engagement with each valve seat in the closed position of the valve and the two displaceable valve elements are connected together by a common drive. A spring 17 urges the valve to its closed position. The valve also comprises a pressure chamber 29 which is defined between the valve seats and is closed when the valves are closed. The chamber is provided with a connection for a pressure meter or a pressure monitor so that it may be used as a tightness measuring chamber. <IMAGE>