baber/WOPTO huggingface dataset:
Patent GB-1267008-A (GB)
IPC: B01D1/00
Filed: 1970-07-10
Abstract: 1,267,008. Regeneration of absorbent liquids such as glycols. BLACK SIVALLS & BRYSON Inc. 10 July, 1970 [14 Aug., 1969], No. 33745/70. Heading B1B. Volatile material, principally water, is removed from an absorbent-liquid, such as triethylene glycol which has been used to dry natural gas, by boiling the water-rich solution of absorbent in reboiler 26 heated by a fire box 30 supplied with burning fuel from burner 28 which is fed with fluid fuel from a jet ejector 56; the vapours of volatile material pass, via column 32 to condenser 48 which is connected, via condensate vessel 52, to the suction inlet of the ejector 56 so that the volatile material is distilled off from the absorbent under sub-atmospheric pressure. The reconcentrated absorbent flows through conduit. 38 into accumulator 36, and is withdrawn through conduit 22. The water-rich solution to be reconcentrated is introduced into reboiler 26 through conduit 42, heat exchanger coil 40, conduit 44, and column 32. The flow of fuel to ejector 56 is regulated by valve 61 which is controlled by temperaturecontroller 59 attached to reboiler 26. The fuel may be part of the dry natural gas obtained at the top of the dehydration column. The water-distillate is discharged by gas pressure from vessel 52 through conduit 53 and valve 54. Valves 54, 65 and 67 are opened or closed in accordance with a pneumatic or electrical signal from liquid-level controller 51 on vessel 52. In a modified apparatus, preheated stripping gas is introduced into the conduit 38 between the reboiler and the accumulator, and the conduit is provided with liquid/vapour contact devices. The feed solution may be passed through a reflux coil in the top of the column before it enters the heat exchanger coil in the accumulator.
Patent GB-1288043-A (GB)
IPC: D04B7/22
Filed: 1968-11-08
Abstract: 1288043 Knitting-machines COURTAULDS Ltd 7 Nov 1969 [8 Nov 1968] 52942/68 Heading D1C A flat 'V' bed knitting machine has two opposed arrays of latch needles in needle beds and includes a carrier mounted above and movable longitudinally of the beds, a supporting member extending downwardly from the carrier and two hold down elements mounted on the supporting member and projecting away from each other in opposite directions the supporting member being movably mounted on the carrier so that either hold down element can be brought into action the arrangement being such that the hold down element presses down the work prior to the advance of the needles as they rise to take the yarn for stitch forming. In Fig. 1 the hold down elements 20 are shown in their position relative to the cams of the machine. The hold down elements may be circular cross section with a tapered end 37 or formed of flat strip and the trailing end is located against the fabric on the needles between the beds at the closest point of approach of the beds. As shown in Fig. I the hold down elements are for use in movement of the cam carriage towards the left hand side of the figure. The location of the hold down element relative to the needle beds is shown in Fig. 3 of the drawings. It is located between the needle beds and leaves a sufficient gap on either side to allow the fabric to pass. In Figure 4 there is shown an arrangement in which reversible hold down members 61-64 are provided on pivoted arms 59, 60. These arms are pivoted on a plate 69 which depend from side plates 40, 41 secured to bridges 42, 43 between the cam boxes. Parts 64, 62 of the hold down elements are operative as the machine moves to the right as shown in Fig. 4 and parts 61, 63 in the reverse direction. In order to reverse the position of arms 59, 60 and hence bring into operation different parts of the hold down elements on slider 44 is provided and has abutments 81, 82 which strike end stops as at 83 before the cam carriage finishes its traverse. This striking action causes relative movement between the slider 44 and the cam carriage and side parts 40, 41. A rack 47 on the slider causes rotation of pinions 48, 49 and thus movement of a further slider 51 which carries pins 57, 58 which in turn engage the forked ends of rods 59, 60 thus causing them to rotate and change the operative position of the hold down elements.
Patent GB-1289338-A (GB)
IPC: C09K8/72
Filed: 1969-10-24
Abstract: 1289338 Wells ESSO PRODUCTION RESEARCH CO 24 Oct 1969 [3 Feb 1969] 52215/69 Addition to 1233769 Heading E1F The method of acidising siliceous formations disclosed and claimed in parent Specification is modified by using a ratio of solvent to oil of 5 to 20 percent.
Patent GB-1290349-A (GB)
IPC: H01L23/29
Filed: 1969-11-26
Abstract: 1290349 Curable polysiloxane compositions containing lead compounds GENERAL ELECTRIC CO 26 Nov 1969 [9 Dec 1968] 57763/69 Heading C3T A curable composition comprises (a) a polysiloxane resin containing at least 0À25 wt. per cent of Si-bonded hydroxyl or C 1-8  alkoxy groups and (b) 0À01-5 wt. per cent of (a)+(b) of (i) 2PbCO 3 .Pb(OH) 2 , PbCO 3 , Pb 2 O 3 , Pb 3 O 4  or PbO 2  and 0À5-10 wt. per cent of (a)+(b) of (ii) a silane R t (OH) u (OR) v Si or a siloxane R x (HO) y (OR) z SiO 4-x-y-z/2  component (ii) being optional when (a) contains more than 4 wt. per cent of hydroxyl or C 1-8  alkoxy groups: R is a C 1-8  alkyl, C 5-7  cycloalkyl, C 2-8  alkenyl, mononuclear aryl or a mononuclear aryl C 1-6  alkyl group or a halogenated derivative of one of these and OR is a C 1-8  alkoxy radical, t is 1-3, u and v are each 0-3, u + v is 1-3, x is 1-3, y and z are each 0-2 and y+z is 0À02-2, there being present at least 5 wt. per cent of OH and OR groups when x is less than 1À7. The resin (a) has the average unit formula where q is 0-1, r is 0-1 and q+r is 0À01-1, and s is 1-1À7. In the Examples the resins used contain monomethylsiloxane or monophenylsiloxane units or equimolar mixtures thereof, with 5% of dimethylsiloxane units in Example 1, and hydroxy and optionally alkoxy groups to a total of 7 wt. per cent; these are mixed with ground fused silica, with and without chopped glass fibres, and Ca or Zn stearate, and PbCO 3  or PbO 2 , and a hydroxy-terminated dimethylsiloxane diphenylsiloxane copolymer or diphenylsilane diol or vinyltriethoxysilane is then added, to give moulding compositions.
Patent GB-1290897-A (GB)
IPC: B23D77/10
Filed: 1969-12-19
Abstract: 1290897 Reamers MERZ AG DULLIKEN 19 Dec 1969 [27 Dec 1968] 61982/69 Heading B3C An adjustable machine reamer comprises a shank 1 and a reamer head 9 which is held on the shank by an expansion member 10 secured to the shank by a screwed connection between an extension on the member and a bore in shank, the head 9 being expanded by movement of a nut 6 acting on a sleeve 8 so that face 19 of the head is forced against the expansion member; alignment of the expansion member and the shank is achieved through co-operating freeground leaving faces 4 and 18 respectively, and the co-operation of a ground centering bore 2 and a ground centering cylinder 12. Tightening of threaded projection 14 in bore 3 pretensions on intermediate member 13 which acts as a locking force in retaining the expansion member in position. A drive pin 17 engages in one of several grooves in the internal bore of the reamer head.
Patent GB-1295828-A (GB)
IPC: A61B5/01
Filed: 1970-04-27
Abstract: 1295828 Tomographic apparatus BARNES ENG CO 27 April 1970 [13 May 1969] 20054/70 Heading H4F Diagnostic apparatus comprises the combination of an isotope scanner and an infra-red scanner so mounted as to simultaneously raster scan the same points on a patient, the output of the isotope scanner being displayed on a photo-recorder and/or colour dot recorder and that from the infra-red scanner being displayed on the colour dot recorder when not in use. The isotope scanner comprises a scintillation probe 14 mounted on the end of an arm 12, Fig. 1, reciprocated by body 10 such that the probe 14 describes a raster scan over the patient. The bolometer infra-red detector is housed in head 30 which is clipped on to the side of probe 14 for movement therewith and has its field of view made coincident with that of the probe by mirror system 35 and 42, Fig. 2, and apertures 38 and 44 in shields 36 and 40. The colour dot recording head is mounted on the far end of arm 12 such that it describes the same raster as the probe and head 14, 30. The output of the infrared detector is adapted for use with the colour dot recorder in interface 55 which clips on to probe 14 and is provided with a temperature meter 56, a meter 66 indicating the colour of the display on the colour dot recorder, an input switch 25 to the colour dot recorder, sensitivity and brightness controls 58 and 60 for the infrared display and a control 65 for varying the frequency of the dots in the infra-red colour dot display. In the circuitry of the display, Fig. 3, the pulsed output of the isotope detector 15 is fed to a first fixed contact of switch 25 and is also converted into a pulse rate analogue voltage in integrator rate meter 18, which voltage is fed to a photo recorder 20, and to a first fixed contact of switch 25. The output of the infra-red detector 50 is alternately sampled in circuitry 52 with a reference temperature voltage, to give a square wave, the A.C. amplitude of which, produced and detected by a detector, is representative of the scanned temperature. The thus produced temperature voltage feeds meter 56 and also the switched potentiometric sensitivity control 58. The adjusted voltage is variably amplified by means of brightness control 60 and operational amplifier 62 and is fed to a second fixed contact of switch 25. A constant pulse width, variable repetition rate oscillator 65, control by 65 feeds a second fixed contact of switch 25. The upper moving contact of switch 25 controls the colour of the dot in recorder 24 and the lower the rate or concentration of the dots. The colour of the dots is recorded on meter 66. In the shown position of switch 25, the recorder displays the thermographic distribution of the patient, and in the upper position the isotope radiation distribution. The isotopic apparatus and the infra-red head may be as commercially available.
Patent GB-1296662-A (GB)
IPC: C09D5/08
Filed: 1970-02-12
Abstract: 1296662 Anti-corrosive wax compositions ESSO RESEARCH & ENG CO 5 Aug 1970 [12 Feb 1970] 6827/70 Heading C5W A rust-preventive composition comprises wax, a metal naphthenate, and an ester of a polyol and a natural fatty body. The wax may be paraffin or microcrystalline wax, petrolatum, carnauba or beeswax. The naphthenate may be of Na, Ca, Ba, Zn, Al, Fe or Co, but is preferably of a Group IV metal, e.g. Pb or Sn. The ester may be derived from sorbitan, mannitan, pentaerythritol, or trimethylol propane, and lanolin, wool grease, tallow or castor oil, preferably the pentaerythritol ester of lanolin. Optionally a diluent such as white spirit or lubricating oil, and an antioxidant such as phenyl α-naphthylamine may be present, the lubricating oil either being a mineral or a synthetic oil, e.g. a diester of adipic or sebacic acid with 2-ethyl hexanol. Preferred amounts are (by wt.) 60-90% wax, 4-15% oil, 2-8% ester, and 4-10% naphthenate.
Patent GB-1297867-A (GB)
IPC: G06G7/14
Filed: 1970-07-20
Abstract: 1297867 Transistor amplifiers PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 20 July 1970 [23 July 1969] 34976/70 Heading H3T A difference amplifier has the emitter of input transistors 1, 2 connected to the base of output emitter coupled transistors 3, 4, the base of emitter coupled additional transistors 5, 6 are connected to the collector of the input transistors 1, 2 and the collector of each additional transistor 5, 6 is either connected to the emitter of that input transistor 1, 2 to which its base is connected or via an inverter to the emitter electrode of the other input transistor (2, 1, Fig. 5, not shown) such that the signal voltage across the base-emitter junction of the input transistors is reduced. The input voltage is applied between the base electrodes of the transistors 1 and 2. Any difference between the current amplification factors of the output transistors 3, 4 (due to manufacture and dependent on temperature and time) will cause the base-emitter voltages of the input transistors 1, 2 to be different when the output transistors 3, 4 have equal collector currents and when there is no input signal. This lack of symmetry is reduced by feedback transistors 5, 6 which enable most of the signal voltage to appear at the base-emitter junction of the output transistors 3, 4. The feedback transistors 5, 6 may be of opposite conductivity type to those of amplifier (Fig. 4, not shown), and/or instead of the collector of each feedback transistor 5, 6 being as shown the collectors may be connected via an inverting amplifier (I 1 , I 2 , Fig. 5, not shown), to the emitter of the opposite input transistor 2, 1. The diodes P may be replaced by resistors which may be connected to a tap on an output resistor of the opposite stage of the difference amplifier and the Zener diodes connected to the base of transistors 5 and 6 may be removed or replaced by diodes. The difference amplifier may be in the form of an integrated circuit.
Patent GB-1301407-A (GB)
IPC: A61B5/07
Filed: 1971-03-22
Abstract: 1301407 Animal husbandry NDCH & CO 22 March 1971 7482/71 Heading AIM [Also in Divisions Gl and G4] Inpending birth in mammals is detected by placing an endoradiosonde, including a transmitter 18 and thermostat 15 (30), in the birth canal, an alarm being generated, at a remote station, when the sonde is expelled during labour, due to a drop in temperature which closes the thermostat to energise the transmitter. The sonde has a housing 10 composed of two sections of synthetic resinous material.
Patent GB-1302694-A (GB)
IPC: E06B1/00
Filed: 1969-03-11
Abstract: 1302694 Fixing window door frames to cavity walls; damp courses; wall ties ECONA (G & B) PLASTICS Ltd 29 Dec 1969 [11 March 1969 7 July 1969] 12688/69 and 34191/ 69 Headings E1B and E1J A damp course for the end of a cavity wall at a door or window opening comprises a strip 36, 138 of corrosion-resistant, damp-proof material, e.g. plastics, which as seen in crosssection has a portion 40, 140 entering the cavity 34, 134 and having longitudinal undercut recesses 50, 142 wherein detachable steel wall ties 66, 144 may be anchored at any position along its length, and also has an outer portion which is secured to a stile, head or sill 38, 136 of a main frame of a window or door. The portion 40, 140 of the damp course is preferably hollow and open towards the frame stile 38, 136, providing a space 60 to prevent moisture creeping across the cavity between the wall and the frame, and the base 58 of the channel 40, 140 is formed with shallow longitudinal grooves 56 which act as moisture traps. The recesses 50, 142 for wall ties are preferably dovetailed. The outer portion secured to the frame may comprise flanges 46, 48 (Fig. 8) or, for metal frames, it may hold a wooden insert 156 to which the frame may be secured (Fig. 7); in either case, the frame is spaced from the wall. Various modifications of the cross-sectional shape of the damp course strip are described. The method of installing the damp course comprises securing lengths of the damp course strip to the stiles of the frame, positioning the frame on the sill, and building up the leaves of the wall on either side of the cavity-entering portion, wall ties being attached between courses as required, and mortar 64 squeezed out from between the bricks engaging in the recesses 50, 142.
Patent GB-1305546-A (GB)
IPC: C07D233/24
Filed: 1969-10-29
Abstract: 1305546 Medicines comprising amidines SMITH KLINE & FRENCH LABORATORIES Ltd 26 Oct 1970 [29 Oct 1969] 52891/69 Heading A5B Pharmaceutical compositions having histamine receptor (other than H-1 receptor) activity comprise a carrier and a compound (or a salt thereof) of the formula: wherein A is a radical such that it forms, together with the C and N atoms shown, an unsaturated heterocyclic basic nucleus having 5 or 6 atoms and which, optionally, is monosubstituted by amino, C 1-4  alkyl or C 1-4  alkylthio; n is 2, 3, 4 or 5; R 1  is C 1-4  alkyl, phenyl (optionally substituted by halogen or NO 2 ), phenyl-C 1-4  alkyl, C 1-4  alkylthio, C 1-4  alkyl, -NHR 3  or -SR 4 ; R 2  is H, C 1-4  alkyl, phenyl or phenyl-C 1-4  alkyl; R 3  is H, Me, phenyl-C 1-4  alkyl, imidazolyl-C 1-4  alkyl or amino and R 4  is a saturated or unsaturated alkyl group containing 1 to 6 C atoms, or (CH 2 ) m  Z where m is from 1 to 3 and Z is phenyl optionally substituted by halogen or hydroxyl, hydroxy, C 1-4  alkylamino, cyano, carboxy, phenoxy or benzhydryloxy, provided that, when R 1  is NHR 3 , A is not such as to form with the C and N atoms a pyridyl ring. R 3  and R 4  may also form a ring, e.g. an imidazoline ring with R 2  and the adjacent C and N atoms.
Patent GB-1310106-A (GB)
Title: Heating of fluids
IPC: F28F13/18
Filed: 1969-04-18
Abstract: 1310106 Surface combustion heaters; matrix burner JOHN THURLEY Ltd 8 April 1970 [18 April 1969] 19838/69 Headings F4B and F4T Fluids are heated, whilst flowing through tubes, by surface combustors, formed from porous refractory material or foamed metal, and which constitute at least in part the wall of the chamber in which the heated tubes are located. A combustible gas/air mixture may be supplied through the pores from a backing plenum chamber including a metal screen flame arrestor. Drilled holes lead from the plenum chamber through the material to close to the combustion supporting surface, the flames from which may impinge on a ceramic tile. If the chamber wall is formed from superposed combustors, the upper combustors may admit combustion air alone into the chamber. The fluids heated may include water, oil, petroleum liquid chemicals or gases.
Patent GB-1310211-A (GB)
Title: Radio frequency amplifying circuits
IPC: H03F1/48
Filed: 1971-01-26
Abstract: 1310211 Transistor amplifying circuits NORTH WESTERN SPECIALITIES Ltd 21 Jan 1972 [26 Jan 1971] 3176/71 Heading H3T A radio frequency amplifier has an input 1, Fig. 1 feeding a first transistor amplifier TR1 the output of which is fed to the input of a second transistor amplifier TR2 through a first inductor L1, the output of the second transistor amplifier TR2 being connected to an output 2 of the amplifier through a second inductor L2, the inductors L1, L2 being arranged to provide substantially constant gain over a range of frequencies and being non-resonant within that range. Feedback may be provided arranged to reduce gain at lower frequencies within the range; in the embodiment, resistor R4, R5, R6 provide the feedback and also bias for transistor TR1, the decoupling capacitor C x  being of small value. Collector D.C. supply is via the output terminal 2, resistor R3 and resistors R1, R2 which are connected to low-impedance taps on the inductors L1, L2 respectively. The arrangement, which is intended for frequencies comprising the U.H.F. spectrum, may comprise a printed circuit board, having a conductive area 4, Fig. 3, forming the ground connection, transistors TR1, TR2 being mounted in apertures in the board, while the inductors L1, L2 are formed by U-shaped conductive portions on the board, which includes clamping means 7 for the input and output feeders, comprising coaxial cables.
Patent GB-1311853-A (GB)
Title: Spirit levels
IPC: G01C9/24
Filed: 1969-07-12
Abstract: 1311853 Spirit levels RABONE CHESTERMAN Ltd 8 Oct 1970 [12 July 1969] 35202/69 Heading G1F A spirit level comprising a chamber 411 containing a liquid and a bubble is provided with markings 416 so that by aligning the bubble with different markings different predetermined angles of inclination of the level can be obtained, the chamber 411 being non-circular in cross-section in any plane and bounded by arcuate surfaces which are concave relative to the centre of the chamber. The chamber 411 which may be defined by two transparent body halves of plastics material may be mounted on a stock 450 having a surface 451 for abutting a surface whose inclination is to be tested. The body halves may additionally be provided with part spherical surfaces (218) Fig. 2 (not shown) having markings (219) which can be used in conjunction with the bubble to indicate errors in levelling of a horizontal surface.
Patent GB-1314735-A (GB)
Title: Flues for chemical reactors
IPC: C10G9/20
Filed: 1970-05-14
Abstract: 1314735 Furnace flues HUMPHREYS & GLASGOW Ltd 12 May 1971 [14 May 1970] 23442/70 Heading F4B A horizontal flue connecting sections of a tubular reformer has a substantial part of its cross-section in the form of a catenary arch, i.e. in a curve defined by the equation y=c cosh x/c where c is a constant. The flue may be built of bricks, of sections laid end to end or in subsections 2, as shown. The sub-sections may be three in number, two oppositely curved lower pieces joined by a top arch (Fig. 2) with tongue and grooved joints. The ratio of internal height to internal base width may be 9/5 and the flue may bare vertical parallel ribs on its external surfaces.
Patent GB-1315626-A (GB)
Title: Substituted p-menthanes and compositions containing them
IPC: A23L27/20
Filed: 1971-02-04
Abstract: 1315626 Confectionery; tobacco-smoke filters; tobacco compositions WILKINSON SWORD Ltd 26 Jan 1972 [4 Feb 1971 (2)] 3930/71 and 3931/71 Headings A2B and A2C [Also in Divisions A4 A5 C4-5 and C6] An ingestible, tobacco or tobacco smoke filter composition capable of stimulating the cold receptors of the human nervous system comprises a 3-substituted p-menthane of formula: where either X is H and Y is -CH(OH)R' or -OC n H 2n OH (R' is H or C 1-8  aliphatic, n is 1-4) or X is OH and Y is C 1-8  aliphatic. The menthane derivative may be 3(2-hydroxyethoxy)-p-menthane, 3-hydroxymethyl-p-menthane, 3-methylmenthol, 3(1-hydroxy-n-propyl)- p-methane, or 3-ethylmenthol. Examples disclose a boiled sweet (XII), a mint sweet (XIII), chewing gum (XIV), cigarette tobacco (XV), and a filter tip cigarette (XVI).
Patent GB-1317176-A (GB)
Title: Light-monitoring devices
IPC: F21V23/00
Filed: 1970-08-05
Abstract: 1317176 Eliminating unwanted radiation PEAK TECHNOLOGIES Ltd 3 Aug 1971 [5 Aug 1970] 37785/70 Heading G1A In a housing including a photo-electrically monitored light source and having an aperture 7 permitting visual indication when a filament lamp 6 is lit ambient light passing through the aperture 7 is prevented from reaching the photocell 5 by a complementary screen assembly comprising a set of at least two filters each of which is capable of transmitting a component or components of white light, the filter characteristics being such that white light is unable to pass through the entire set. The screen assembly preferably consists of a red filter placed over the aperture 7 and a green filter 11 in front of the light sensitive surface 10 of the photo-cell 5. Other kinds of screen assemblies are disclosed such as two polarized filters.
Patent GB-1320693-A (GB)
Title: Process and apparatus for excavating the ground
IPC: E02F5/00
Filed: 1969-04-30
Abstract: 1320693 Earth working F HANSEN 30 July 1970 [30 April 1969 27 Oct 1969] 22107/69 and 52520/69 Heading E1F A trench is formed by the vertical movement of either a drop chisel (5' Figs. 7 not shown) having teeth at its bottom edge or a cutter 13 which has teeth 14 along its front side, is vertically movable by a hydraulic jack 16, and may be vibrated. A polythene or metal sealing membrane is disposed about the back side of the apparatus and seals against the sides of the trench so that a bentonite slurry in the already formed part of the trench, optionally aided by a jack, urges the pipe and chisel or cutter against the face of the trench being worked. The apparatus is supported on the surface by a horizontal frame having a straight or curve guide slot for the pipe. The trench may be formed on the sea-bed. Circulating water removes the excavated soil &c up a pipe 28, assisted by water jets from pipe 18, compressed air from pipe 20 and the pumping action of the drop chisel.