baber/WOPTO huggingface dataset:
Patent GB-575414-A (GB)
Abstract: 575,414. Closed solid-fuel stoves. SANFORD, H. W., and BIDDLE, W. P. June 21, 1943, No. 9985. [Class 126] In a magazine-fed closed solid-fuel stove, bridging and sticking of the fuel in the magazine 1 is prevented by introducing part of the primary air through apertures 24 in the magazine wall 23 so as to produce, throughout a substantial portion of its height, combustion at the periphery only of the fuel column, the centre portion remaining at a sufficiently low temperature, e.g., below 900‹F. to retain the volatile constituents. The main combustion is effected at the base of the column immediately above the grate 11 by preheated primary air supplied through openings 29 while secondary air, heated in a chamber 33, for completing the combustion is delivered into the flue 30 through apertures 41 provided behind a downwardly projecting firebrick 38. The latter is removably mounted in the lower end of the chamber 33 and formed with a number of ribs 40 to seat on a shoulder on the bar 15 and provide the secondary air ports 41. The primary air is admitted at 17 to a heating chamber 16 from which it passes to a top flue 19 and from thence down channel members 23 which form the wall of the magazine and rest on a firebrick ring 27 in which are formed passages 28 leading to the primary air ports 29. The flue 30 leads to a heating chamber 2 fitted with baffles 31 and communicating at its upper end with the outlet 32. Figs. 7 and 8 show a modification in which the wall of the magazine is formed by apertured plates 56 pivoted at their upper ends 57 so that they may yield as the coal in the magazine swells, overlapping joints of the form shown at 60, 61, Fig. 8, being provided to prevent fine coal from passing between the plates.
Patent GB-1337036-A (GB)
Title: Apparatus for the measurement of heat extraction coefficients
IPC: G01N25/00
Filed: 1971-12-14
Abstract: 1337036 Measuring heat flow electrically OFFICE NATIONAL D'ETUDES ET DE RECHERCHES AEROSPATIALES 14 Dec 1971 [18 Dec 1970] 58054/71 Heading G1N [Also in Division H1] Apparatus for measuring the heat extraction coefficient s of a solid body (s = ##c#; # is thermal conductivity, c is specific heat and e is specific gravity) comprises a central mass 201 of metal, a peripheral mass of metal 203, enclosing the central mass and rigidly connected to it by a layer of thermal insulation 205, an electrical resistance heater 206 embedded in an epoxy resin shield 207, a thermocouple 209 for monitoring the temperature of the central mass, and a metal screw 210 acting with the metal of the masses and with leads 211, 212 to form a thermocouple for monitoring the temperature difference between the masses. The apparatus is arranged on a pneumatic jack 301-305 and an automatic control circuit acts to heat the two masses to a predetermined temperature, whereupon the jack is actuated to urge the masses into contact with a surface of a body of which the co-efficient s is to be measured. The temperature of the central mass 201 is then recorded as it cools and the temperature curve obtained may be used to determine s.
Patent GB-1316303-A (GB)
Title: Ignition and control system for a burner
IPC: F23Q7/12
Filed: 1970-12-12
Abstract: 1316303 Ignition and control circuit for burners ROBERTSHAW CONTROLS CO 3 Sept 1970 [10 Sept 1969] 59180/72 Divided out of 1316302 Heading F4T The subject-matter of this Specification is identical with that described in Specification 1,316,302 but the claims differ.
Patent GB-1418530-A (GB)
Title: Adjusting devices in carburettors for internal combustion engines
IPC: F16B41/00
Filed: 1973-12-31
Abstract: 1418530 Tamper proof screws SOC INDUSTRIELLE DE BREVETS ET D'ETUDES 31 Dec 1973 [1 March 1973] 60243/73 Heading F2H [Also in Division F1] A tamper proof regulating screw for controlling the idler circuit of a carburettor, comprises a cap 13a, the interior of which is larger in crosssection than that of the enlarged screw head 9, and which has a resilient lip 14 which engages in a groove 15 in the head 9. The screw 6 is also provided with a tapered portion 10 which, in use, projects into a port 4 for adjustment purposes. Once the position of the screw is set, the cap 13a is placed in position to cover the screw head 9. The cap 13a may be provided with a finger 16 which engages in an opening 17 and hence prevents rotation of the cap 13a without breaking off the finger 16. Alternatively, the finger 16 may be absent, the cap then being freely rotatable relative to the screw. A helical spring 12 or a locking nut frictionally engages the screw 6 to prevent rotation of the screw 6 by mere rotation of the cap.
Patent GB-1381490-A (GB)
Title: Cassette recording and or reproduction apparatus
IPC: G11B15/675
Filed: 1971-12-30
Abstract: 1381490 Tape cassette recording/playback apparatus STAAR SA 30 Dec 1971 [23 June 1971] 60644/71 Heading G5R A tape cassette 4 is engaged with a head 5, tape guides 20 and pressure rollers 16 on closing a cover 3 over the cassette-receiving space. A cam 6 is pivotable with the cover 3 and cam following pins 9 are preferably mounted on a slidable member 10, which is connected to a movable plate 2 on which the cassette is located by pins 11, thereby to slide the cassette 4 towards the head 5 &c. The cassette returns independently to an inoperative position, Fig. 3 (not shown); and since the cams 6 have inclined side surfaces 12 and are resiliently mounted on spindles 7 by spring washers 13, the cover 3 may be opened with the cassette 4 in this inoperative position, as the pins 9 then engage the inclined surfaces 12 and move the cams 6 outwardly. The member 10 is resiliently connected to the plate 2 so that if no cassette is present, pins 9 are deflected out of the plane of cams 6, Fig. 8 (not shown), and the plate 2 cannot thereby be moved. In an alternative embodiment, Figs. 13, 14 (not shown), the cassette does not move, the head 5 &c. being mounted on a slidable plate 19 which carries the cam follower pins 9.
Patent GB-1270210-A (GB)
Title: Magnetic core for variable-reluctance transducer
Inventor: TAVIS JOHN ROBERT
IPC: G01L9/00
Filed: 1970-12-22
Abstract: 1,270,210. Inductors. TAVIS CORP. 22 Dec., 1970, No. 60718/70. Heading H1T. [Also in Division G1] A magnetic core 21 comprises a circular central pole face 13 around which a plurality of legs 17 are spaced apart and bent to form a segmented, annular, U-shaped channel for an inductance winding (51), Fig. 5 (not shown), each leg bearing at its radially outer end a tab 18 which tabs are bent to form an annular, segmented pole face 23 co-planar and concentric with the central pole face, the gaps 24 between adjacent tabs being larger than the gaps between adjacent legs. The core is utilized in a fluid pressure transducer (see Division G1). In a preferred embodiment the core is of " Mumetal " (Registered Trade Mark) and is excited at between 10 and 50 KHz. In an alternative embodiment, Figs. 10, 11 (not shown), for use at lower excitation frequencies the core is cast or machined and the centre pole (74) is cylindrical.
Patent GB-1300000-A (GB)
Title: Improvements relating to external combustion engines
Inventor: MUNZINGER FRIEDRICH
IPC: F02B47/00
Filed: 1970-12-22
Abstract: 1300000 External combustion engines F MUNZINGER 22 Dec 1970 [23 Dec 1969] 60866/70 Heading F1S In a method of operating a piston engine with external combustion of an air fuel mixture, whose air content has been precompressed and to which a liquid coolant is added prior to combustion, the coolant which may have been injected (11) or admitted in atomized form is precompressed together with the air content of the mixture and the precompression is carried out to a pressuretemperature value at which the coolant has substantially reached its full evaporation. The working cylinders 4, 5 have cam operated inlet and exhaust valves 4<SP>1</SP>, 4<SP>11</SP>, 5<SP>1</SP>, 5<SP>11</SP>. The external combustion chamber 20 is associated with cylinders 2, 3 constituting the preliminary compression stage.
Patent GB-1178090-A (GB)
Title: Piperidine Derivatives
IPC: C07D211/22
Filed: 1968-12-24
Abstract: 1,178,090. Piperidine derivatives. SOC. FARMACEUTICI ITALIA. 24 Dec., 1968 [29 Dec., 1967], No. 61321/68. Addition to 1,110,637. Heading C2C. L(-) and D( + ) 1,α,α-Trimethyl-2-piperidyl carbinol diphenylacetate (including salts thereof, e.g. the hydrochloride) are obtained by resolution of the racemate. The examples describe a separation using D( + ) and L(-) tartaric acid. Pharmaceutical preparations showing anaesthetic activity contain as active ingredient the above L(-) and D(+) piperidyl compounds; administration is, e.g. endovenously or subcutaneously.
Patent GB-1249497-A (GB)
Title: Apparatus for automatically eliminating an influence of the earth's magnetic field on colour television receivers
Inventor: TOKITA TETSUO
IPC: H01L29/00
Filed: 1968-12-30
Abstract: 1,249,497. Cathode-ray tube circuits. SONY CORP. 30 Dec., 1968 [29 Dec., 1967; 2 March, 1968], No. 61670/68. Heading H4T. In an arrangement for automatically eliminating the influence of the earth's magnetic field on the cathode-ray tube in colour television receivers means are provided for detecting such field and for producing an output voltage which is utilized to control a proportional current in a coil positioned in relation to the tube such that the magnetic field produced thereby neutralizes that due to the earth's field. The means for detecting the earth's magnetic field comprises a magneto-resistance element formed from semi-conductor material SCM (Fig. 1) and consists of a high resistance region I, P and N regions and a recombination region F. This element has a voltage current characteristic A2 (Fig. 2) in the presence of a magnetic field (+ ) H acting in the direction shown by the arrow and at right angles to the current paths in the element and a characteristic A3 when the direction of the field is reversed (- H), so that the magnetic field resistance characteristic is as shown in Fig. 3. In carrying out the invention two such elements connected in series, in the forward direction, may be employed (Figs. 5A and 5B, not shown) but, preferably, and as shown in Figs. 7A and 7B two such series connected pairs SCM 1  ... SCM 4  formed as a bridge circuit and operating differentially are employed. In the arrangement of Fig. 7A, a D.C. bias source E I  is utilized and the output of the bridge is amplified in D.C. amplifiers DA 1 , DA 2  feeding opposite ends of the neutralizing coil LT. In the arrangement of Fig. 7B an A.C. bias source comprising, e.g. a sine wave or the line or frame pulse voltages available in the television receiver, is employed and the bridge output is amplified in A.C. amplifiers 12 1 , 12 2 , rectified by diodes 17 1 , 17 2  and further amplified by D.C. amplifiers 18 1 , 18 3  feeding the coil LT. In practice three such bridge-connected elements are employed. These are positioned with the angular relationship shown in Fig. 8A, the output of the bridge ST controlling the current in a coil LT surrounding the screen end of the tube CT whilst the outputs of the bridges SL and SR control the current in coils LL 1 , LL 2  and LR 1 , LR 2  positioned at the top and bottom of the left and right-hand sides of the screen. With this arrangement currents having relative phases -45‹, 0‹, +45‹ are produced in the coils LL, LT and LR respectively and when once set up, with suitable adjustment of the gains of the D.C. amplifiers, neutralization of the earth's magnetic field is produced irrespective of changes in the orientation of the receiver. The sensitivity of the arrangement may be enhanced by the use of flux collectors on both sides of the elements of the bridges (Fig. 11, not shown).
Patent GB-1246198-A (GB)
Title: Cathode ray tube
IPC: H01J29/51
Filed: 1969-12-19
Abstract: 1,246,198. Electron lenses. SONY CORP. 19 Dec., 1969 [19 Dec., 1968], No. 62129/69. Heading HID. A focusing lens for a cathode-ray display tube comprising outer cylindrical electrodes 17a and 18a, Fig. 2, operated at a high potential and an intermediate cylindrical lens 19a surrounding the ends of the outer electrodes and operated at a lower potential, is characterized in that an auxiliary apertured electrode 30 extends between the outer electrodes to reduce the potential gradient of the lens field thereby reducing spherical aberration. In one example the electrodes 17a and 18a are operated at 20kV whilst electrode 19a is earthed. Because the electrodes 17a and 18a are connected through electrode 30 there is no need for a connecting lead between them passing round the outside of electrode 19a, so the diameter of this electrode may be increased, thereby further reducing spherical aberration. In Fig. 2 the electrode 30 is a helical wire; alternative forms comprise axial wires (Fig. 4A, not shown), an apertured cylinder (Fig. 4B, not shown), and wire rings joined by axially-extending wires (Fig. 4C, not shown). The lens may be used in a colour display tube of the type wherein three coplanar beams are directed through the centre of the lens and are subsequently converged on a shadow mask or grill by means of electrostatic deflection plates (Fig. 5, not shown).
Patent GB-660763-A (GB)
Abstract: 660,763. Electromagnetic ammeters and voltmeters. SANGAMO WESTON, Ltd. Nov. 17, 1949 [Aug. 11, 1949], No. 29468/49. Class 37. In a moving-coil instrument having a transversely magnetized cylindrical core surrounded by a soft-iron yoke, one polar face of the core is planar or of greater radius than the rest of the cylinder. A transversely magnetized cylindrical core 1 is supported within an annular soft iron yoke 2 which provides a return path for the flux of the magnetized core. A coil 3 pivoted for movement in the air-gap between the core 1 and yoke 2 carries a pointer 6 which moves over a scale 7. In order to render the scale more uniform one of the polar surfaces of the core is cut away to provide a plane polar surface 8 normal to the magnetic axis M-M. The cut is of such extent as to reduce the thick. ness of the core at the magnetic axis to about 95 per cent of the diameter of the circular crosssection. In order to increase the linearity of the scale still further, the core 1 may be rotated clockwise so that the magnetic axis M-M is at an angle of about 20 degrees to the centrescale position CS. The magnetic cores of non- circular cross-section may be formed by grinding down a core of circular cross-section or they may be formed from powder. A closer approach to a uniform scale may be obtained by rounding off the edges of the plane polar surface 8 or by substituting therefor a polar surface having a relatively long radius of curvature.
Patent GB-776914-A (GB)
Abstract: 776,914. Walls. TAYLOR, E. E. Oct. 13, 1955, No. 29158/55. Class 20(4) A wall structure particularly for use in tropical climates and which can be easily erected and readily repaired, comprises a skeleton framework 11 formed of a number of vertically spaced horizontal rods, which are each bent to form, in plan view, a series of troughs alternately facing in opposite directions so that their base portions 11a are alternately laterally offset, and which are supported by two horizontally spaced rows of vertical rods mounted in a concrete base 10. The external surface of the wall consists of a number of overlapping tiles 12 each having at least one hook 13 to engage one of the offset portions 11a on the outer side of the framework, the inner lining, e.g.. plaster board 14, being secured against the offset portions 11a on the inner side of the structure by means of headed pins 15 which pass through holes 16 in the plaster board and have spring legs 18 for bending around a corresponding portion 11a. In a modification the horizontal rods are bent to provide alternately one narrow trough and one much broader trough so that the offset portions on the outer side of the framework are much longer than those on the inside.
Patent GB-2025230-A (GB)
Title: Control circuits for electrosurgical devices
IPC: G01V3/08
Filed: 1978-06-14
Abstract: A control circuit for a radio frequency electrosurgical device includes a manually operable switch (26) that is electrically isolated from the R.F. circuit supplying electrodes 22,23 of the device. The switch is connected in series with a photovoltaic cell (58) and relay means (44,46). The photovoltaic cell is illuminated by a lamp 66 so that closing of contacts 33 or 37 of the switch causes energisation of the relay means. The relay means is connected to actuate the electrosurgical device. The voltage at the switch is limited to the low voltage produced by the photovoltaic cell. <IMAGE>
Patent GB-2004071-A (GB)
Title: Electrical conductivity sensor
IPC: G01N27/07
Filed: 1978-08-22
Abstract: A sensor for use in measuring and monitoring the electrical conductivity of a liquid comprises at least four concentric circular electrodes (10, 12, 14, 16) which are disposed in a surface (30) which is preferably flat. The concentric electrodes are mutually separated by annular areas (11, 13, 15) of electrically non-conductive material. Electrode 10 may incorporate a temperature compensation thermistor. Also disclosed are a system for monitoring the electrical conductivity of a liquor sample and a system for comparing the electrical conductivities of two liquor samples both of which systems include a measuring cell having the aforegoing construction. <IMAGE>
Patent GB-2036846-A (GB)
Title: Improvements in or Relating to Space Structures
IPC: E04B1/19
Filed: 1978-10-18
Abstract: In a space structure comprising a multiplicity of separately formed elongate members interconnected at their ends at a plurality of mutually spaced connection positions or nodes by separately formed node connectors to form a lattice-work structure, each elongate member is made of resin bonded glass or other inorganic reinforcing fibre. Preferably, each node connector is also made of resin bonded glass or other inorganic reinforcing fibre or, if made of steel or other metal or metal alloy, has a coating or covering layer of corrosion- resistant non-metallic material. At least some of the elongate members may be of tubular form.
Patent GB-2010988-A (GB)
Title: Underwater Pipeline Sealing Device
IPC: B63C11/40
Filed: 1978-12-14
Abstract: For the purpose of sealing a joint between a submerged chamber and a pipe (P), a membrane (1) is made of a substantially U-shaped sheet of resilient flexible material. The outside periphery of the sheet is secured the chamber by bolts or rivets and the side parts (1a) are sealingly drawn together by a fastener of a sliding type which includes track elements (2) secured to the side parts (1a) so as to which is secured the pipe (P) a cuff (1b) which is secured to the pipe by a clamp (5). <IMAGE>
Patent GB-2019117-A (GB)
Title: Terminals for earthing and neutral conductors
IPC: H01R9/26
Filed: 1979-01-31
Abstract: An earthing or neutral terminal for mounting on a supporting rail 12 of asymmetrical cross-section with inwardly bent flanges, comprises an shaped member 11 of bent sheet metal, the upper end of which forms a current carrying bar 1 for connection of external conductors 18, and the lower end of which bears on the flanges of the supporting rail and is clamped to the latter by a clamping member 15 and a clamping screw 16. The member 11 has two spaced parallel side wall portions 2 interlocked at their lower edges by respective lugs 3, 4, 5. <IMAGE>
Patent GB-2013932-A (GB)
Title: Improvements in or relating to photographic copying material
IPC: G03F1/90
Filed: 1979-02-01
Abstract: A photographic copying material which may be used for pasting up comprises a substratum provided on one surface with a light sensitive layer. The other surface of the substratum is provided with a self-adhesive layer protected by a removable covering film or paper.
Patent GB-2014188-A (GB)
Title: Process of purification of sugar liquor by electrodialysis and apparatus for carrying out the process
IPC: C13B20/18
Filed: 1979-02-07
Abstract: The eluent for the electrodialyzer (10) has a higher saline concentration than the sugar liquor to be purified and is charged with a solute for conferring accrued viscosity so that its conductivity is of the same order of magnitude as that of the sugar liquor. Preferably, the solute is a by-product of sugar manufacture, namely, molasses. Prior to undergoing electrodialysis the sugar liquor is passed through the columns (7a, 7b) of an anionic exchanger (7) in order to replace its large anions for smaller anions, having a molecular weight less than about 50, such as chloride ions. The columns of the ion exchanger may be recharged with chloride ions by washing it with eluate resulting from electrodialysis.
Patent GB-2020224-A (GB)
Title: A Rotary Extrusion Head for the Production of Tubular Plastics Films
IPC: B29C48/10
Filed: 1979-05-03
Abstract: The head comprises a rotatingly driven part 12 which is supported in a stationary part 10. Delivery ducts 38 in the port 12 supply molten plastics material to an annular die passage 22 and are fed with the molten plastics from an annular groove 30 in the stationary port 10, which is open towards the rotating part 12 and around which material is disposed delivered from a supply duct 34 flows in a single direction corresponding to that of the rotating part 12. Air ducts 44, 48 for the supply and return of cooling air are provided for cooling the tubular film 60 and extend through the rotating part 12 and the stationary part 10. The required flow direction around the annular groove 30 can be effected by a constriction 56 on one side of the supply duct 34, and towards which the groove 30 is of a decreasing cross-section. The ducts 38 may open into an annular groove in the port 12. <IMAGE>
Patent GB-2019733-A (GB)
Title: Extraction apparatus
IPC: B01D11/02
Filed: 1979-05-10
Abstract: An extraction vessel containing a filter element (14), e.g. a mash tun, has a peripheral wall portion (1) and a floor portion (2) which is movable away from the top portion to an open position (0) to permit discharge of the spent particulate solids, e.g. grain. By providing a floor portion comprising a vessel (9) and a straining plate (14) closing the top of the vessel and by hingeing (19) the floor portion on the wall portion. the floor portion in open position presents a downwardly sloped straining plate over which the spent solids pass smoothly to a collector. The lower part of the wall portion maybe formed as an additional straining element (17). <IMAGE>
Patent GB-2023202-A (GB)
Title: A Machine for the Manufacture of Strands from Several Wires
IPC: H01B13/04
Filed: 1979-05-16
Abstract: A machine for the manufacture of strands from several wires comprises feeding means for the wires, downstream of said feeding means, for each wire, a twisting device of the wire about its longitudinal axis, downstream of said devices, a strand formation apparatus, and control means for the twisting devices so that at each time, some of the wires rotate about their axis in a determined direction and the others in the reverse direction so that the algebraic sum of the torques applied to the wires to twist them are substantially zero.
Patent GB-2051039-A (GB)
Title: Process for Purifying Terephthalic Acid
IPC: C07C51/487
Filed: 1979-06-12
Abstract: Crude terephthalic acid obtained by oxidation of p-tolualdehyde in a liquid phase with molecular oxygen in the presence of a bromine compound as a catalyst, using water as a solvent is purified by dissolving the crude terephthalic acid in water, hydrogenating the aqueous solution of terephthalic acid with molecular hydrogen in the presence of a hydrogenating catalyst, and recrystallizing the terephthalic acid from the hydrogenated aqueous solution, where an alkaline material such as a hydroxide, a carbonate, or a bicarbonate of sodium, potassium, calcium or barium is added to the aqueous solution of terephthalic acid to be purified before the hydrogenation. The purified terephthalic acid has a very low 4-CBA content, and no hydrogenation catalyst activity is lowered by the addition of the alkaline material.