baber/WOPTO huggingface dataset:
Patent GB-1367472-A (GB)
Title: Method and apparatus for facilitating formation of textile materials into strands
IPC: D01H11/00
Filed: 1971-11-26
Abstract: 1367472 Spinning machines; reducing electrostatic charges PARKS-CRAMER CO 26 Nov 1971 [4 Dec 1970] 55118/71 Heading D1F [Also in Division H1] A method of forming textile materials into strands at a series of strand forming stations spaced along a textile strand forming machine, e.g. a ring spinning frame, comprises the steps of travelling a flowing stream of air along the textile strand forming machine while sequentially directing the air stream towards the individual stations in the series and towards strands being formed at the stations, and while reducing electrostatic charges by electrically charging the flowing air stream. In a preferred embodiment, the flowing air stream travels along the textile machine by being mounted on a travelling pneumatic cleaner 20 which runs on a rail 21 above the machine. The flowing air stream is directed onto the machine, e.g. at the drawing system D by nozzles 26 or onto the strand Y being formed by openings 25 in the trailing conduits 22, 23 of the pneumatic cleaner. The air stream is charged by means 30 comprising a clamping ring 34 surrounding a preferably metal conduit 31 having a ring of apertures 32. Surrounding the ring of apertures 32 is a ring of pointed electrodes 35 mounted within the clamping ring 34 by a spacing ring 36. The electrodes are insulated from the conduit 31 and the conduit 31 and electrodes are connected to a high voltage generator which may be A.C. or D.C. The ionised air produced reduces electrostatic charges within the textile machine and the strand being formed.
Patent GB-1448122-A (GB)
Title: Inverter circuits
Inventor: BOLL HARRY J
IPC: H03K19/096
Filed: 1973-11-28
Abstract: 1448122 F.E.T. inverter circuits WESTERN ELECTRIC CO Inc 28 Nov 1973 [4 Dec 1972] 55124/73 Heading H3T To improve operation of a F.E.T. inverter Q1, Q2 the gate capacitances of Q1 are precharged (e.g. by a F.E.T. Q3); and F.E.T. Q2 is turned off by a further F.E.T. Q4 when A turns on Q1, so as to remove the voltage divider effect of Q1, Q2 on the output A. When supply voltage 120 is pulsed negative (O v.) relative to V DD  (+10v.), the input A either holds Q1 on to make output A stay at + 10 v., or else turns Q1 off to allow A to go to 0 v. As A starts to fall, capacitive bootstrap action increases conductivity of Q2 so that A can go more quickly down towards 0 v. than it could if without the capacitances Q2 increased greatly in impedance as its source (A) approached 0 v. When Q1 is held on by A, the voltage dividing action of Q2 with Q1 is prevented by causing A to turn on Q5 to apply V DD  (+10 v.) through Q4, which is turned on by the pulsed supply 140, to Q2 gate. The current flow through Q3 in these circumstances may be stopped by pulsing its gate and source positive (200, Fig. 2, not shown at the same time as 140 goes negative. The positive potential to Q5 may be derived from Q1 drain (Q 1 <SP>1</SP>) instead of from V DD . Matrix stores using capacitive cells with gating F.E.T.s are described, in which the horizontal and vertical address circuits (Figs. 4, 5, not shown) use the above inverters (a 0 -a 8 ). Integrated circuit procedures are described, including an integrated embodiment (Fig. 7, not shown) of two of the memory cells.
Patent GB-1172394-A (GB)
Title: A Building Constructional Unit
IPC: E06B1/60
Filed: 1966-12-09
Abstract: 1,172,394. Glass units and fixing same in walls. TRANSGLAS A.G. 9 Dec., 1966 [10 Dec., 1965; 7 June, 1966], No. 55183/66. Heading E1R. A unit of assembled glass sheets 1, 3 which may be of channel cross-section arranged side by side with adjacent flanges connected e.g. by adhesive or cement on adjacent confronting surfaces, the panels 1, 3 being spaced by plastics spacers 4 and fitted by blocks 7 into a holder frame 5 which may or may not comprise top and bottom rails of channel section and may or may not comprise side stiles, and if so comprised the stiles are of channel section which top and bottom rails on the inner (left of drawing) side portions 6c and 8c are removable from flanges 6 and 8 respectively, for removal and renewal of the glass panes and such frame 5 is provided with an attachment rail 11 of channel section whose flanges 11a are slidable over the flanges 6c and is displaced away from the rail web 6b by a resilient sheet or rubber spring 12 the rail 11 being secured to the rail 6b. The ininstalled condition (dot-dashed lines) by a pin 13 passing through aligned holes 14 in the flanges of rails 11 and 6 the rail 11 having an inclined surface 11d so that when the unit is installed by positioning the lower rail 8 into a channel member 16 secured by lugs 18 on a rib 19 of the lower side of the window opening (for which purpose the portion 22 of member 16 is removable) the upper'rail 6 is positioned opposite the fixture rail 15 secured by lugs 17 in the surrounding wall, and the pin 13 is removed whereupon the spring 12 forces the rail 11 into the channel 15, the surface 11d cooperating with the inclined surface 15a to position the unit correctly in the opening. Guiding surfaces may be provided between members 16 and 8 (Fig. 3) or between connectors for side by side glass sheets and an intermediate part of rail 11 (Fig. 4).
Patent GB-1488148-A (GB)
Title: Manufacture of voltage dependent resistors
IPC: C04B35/453
Filed: 1974-12-20
Abstract: 1488148 Voltage-dependent resistor MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 20 Dec 1974 [20 Dec 1973] 55218/74 Headings ClA and ClJ [Also in Division H1] A body for a voltage-dependent resistor comprising ZnO and 0À1-5À0 mol per cent Bi 2 O 3  (all percentage figures relate to the final body) is made by calcining a mixture of ZnO and at least 0À05 mol per cent Bi 2 O 3  at 650- 950 C., adding 0À1-5À0 mol per cent CoO and/or 0À1-5À0 mol per cent MnO 2  and any Bi 2 O 3  not yet added, reducing the particle size, shaping and sintering. The material added after calcining may also include 0À01-5À0 mol per cent Sb 2 O 3 , 0À1-5À0 mol per cent TiO 2 , or 1À0-10À0 mol per cent BeO; if these materials are present there may also be included 0À02- 10À0 mol per cent SnO 2 , Cr 2 O 3 , SiO 2 , NiO, MgO, BaO, B 2 O 3 , CaO or CdO. Exemplified compositions comprise 85À0-99À8 mol per cent ZnO. The body is preferably made by wet-milling the initial mixture for 5 hours, air-calcining for 1 hour, e.g. at 750-850 C., reducing the final mixture in a wet mill for 20 hours, moulding with a polyvinyl alcohol binder at 100-1000 kg./cm.<SP>2</SP>, and air-sintering at 1000-1450 C. for 1-3 hours.  The body may be formed with flat parallel major faces, which are then abraded and provided with electrode plates, e.g. as films of indium. Wire leads may be soldered to the plates.
Patent GB-1371606-A (GB)
Title: Light projecting devices
IPC: F21Y101/00
Filed: 1971-11-11
Abstract: 1371606 Light emitting pen DEFENCE SECRETARY OF STATE FOR 11 Nov 1971 [20 Nov 1970] 55267/70 Heading F4R A light projecting pen for writing on photosensitive material comprises a light source 50 and a light pathway 44 to a projecting tip 46 of the pen, the pathway and source being contained in a member 18, 20 slidable in a bore 22, 24, so that on pressing the tip 46 against a writing surface the member 18, 20 moves inwardly connecting a contact 56 of the source to an electric cell terminal 65, permitting light to be emitted from the tip 46. The other source contact is via a helical spring 38 to contact 62, which spring also biases member 18, 20 outwardly in the absence of a writing surface, breaking off the contact 56-64. An aperture 66 may be present in the member part 18 to enable the writer to know when light is being emitted. The light source may be a miniature or microminiature lamp or a light emitting diode. The pathway 44 may be a light guide (as shown) or a hollow tube.
Patent GB-1161475-A (GB)
Title: Stabilising Additive
Inventor: MORTIMER KEITH
IPC: D06P3/36
Filed: 1966-12-12
Abstract: 1,161,475. Stabilizing carrier emulsions in dyeing processes. YORKSHIRE DYEWARE & CHEMICAL CO. Ltd. 12 March, 1968 [12 Dec., 1966], No.55500/66. Heading D1B. Carrier emulsions in dyebaths are stabilized by adding a compound of formula I or II in which R is a saturated or unsaturated fatty (at least 8 carbon atoms) compound contain. ing one or more reactive hydrogen atoms (as defined) M is an alkali metal ion,- Mg<SP>++</SP>, Ca<SP>++</SP>, NH 4 <SP>+</SP> or an amine salt, X is 2-31 Z is 1-3 and a and b are each 2-4, or by adding a compound of formula Ia or IIa in which R and Z are as above, M is an alkali metal ion, NH 4 <SP>+</SP>, or an amine salt, X is 1-30, m, p, q and r are each 1-3 but the sum of (n+p) and the sum of (q+r) must not exceed 4.
Patent GB-1245239-A (GB)
Title: Improvements relating to electrical analogue function generators
Inventor: UDALL ANTHONY JOHN SHAWCROSS
IPC: G06G7/28
Filed: 1967-12-07
Abstract: 1,245,239. Piecewise linear function generators. E.M.I. Ltd. 28 Nov., 1968 [7 Dec., 1967], No. 65701/67. Heading G4G. A piecewise linear function generator comprises a signal source 1, e.g. a potentiometer, having output 1a connected over resistors 2, 3 to anodes of diodes 4, 5 whose cathodes are connected to low impedance input feedback amplifier 10. Similarly, a bias source 6 having output 6a is connected over resistors 7, 8 to anodes of diodes 4, 5. Diodes 13, 14, in reverse sense shunt the series combinations of diodes 4, 5 and load. If initially the potential at the junction of 2, 7 exceeds that at the junction of 3, 8 and the input voltage is such that both junction potentials are below earth, diode 13 conducts, diode 4 blocks, and potential at 2, 7 is driven below earth. If input voltage drives the potential at 2, 7 above earth, diode 13 cuts off and diode 4 conducts to define a break point; and variations of impedance presented to source by diode 4 over the break point are compensated by variations of impedance of diode 13; diodes 5, 14 operating similarly at a higher signal voltage break point. Plural diode and resistor networks may be added to obtain further break points, and a piecewise linear function voltage appears at the output, e.g. a square function, and the device may be applied to quarter squares multiplication. In modifications, the generator may be responsive to plural input signals, and amplifier feedback may be applied from the output to the anodes of diodes 4, 5. Alternatively (Fig. 2, not shown) more complex impedance networks may connect signals to the diodes, and standing bias from a potentiometer may be applied to terminal 1a to compensate errors due to current from the bias source through the networks into the signal source.
Patent GB-1187889-A (GB)
Title: Manufacture of Olefines.
IPC: C07B61/00
Filed: 1968-11-26
Abstract: 1,187,889. Dehydrogenating n-alkanes. TEXACO DEVELOPMENT CORP. 26 Nov., 1968 [12 Dec., 1967 (2)], No. 55915/68. Heading C5E. C 6-20  n-alkanes are dehydrogenated to corresponding n-alkenes at 800-950‹ F., 0-200 p.s.i.g. pressure and LHSV of 0À5-10À0, by contact with a catalyst comprising a crystalline metallic zeolitic molecular sieve having uniform pore opening of 5Š or 10† (types 5Š or 13X respectively) and having impregnated thereon 0À1-5 wt. per cent of Pt, Pd or Rh. Hydrogen may optionally be present.
Patent GB-1410849-A (GB)
Title: Process for the production of coloured polyurethane foams
IPC: C08G18/00
Filed: 1973-12-04
Abstract: 1410849 Coloured polyurethane foams BAYER AG 4 Dec 1973 [5 Dec 1972] 56124/73 Heading C3R Coloured polyurethane foams are prepared by a process in which a dye dispersion which contains one or more dyes each of which contains at least one free amino and/or hydroxyl group capable of reacting with an isocyanate group under polyaddition conditions and a liquid in which the dye is soluble to an extent of less than 2%, is added to the reactants used for the production of the foam either before or during the reaction. The dye may be a triphenylmethane, oxazine, thiazine, nitro, methine, phthalocyanine or particularly azo or anthraquinone dye. The liquid in which the dye is dispersed may be unreactive with isocyanates, e.g. aryl, alkyl or halogenated alkyl esters of phosphoric acid, adipic acid esters, phthalic acid esters or glyceric esters or alternatively may be reactive with isocyanates, e.g. condensation products of adipic acid and butane-1,3-diol or propylene-1,2-glycol. Preferably, the dye dispersion is introduced into the mixing chamber of a foaming apparatus though a dosing device to make it possible to colour the foam continuously.
Patent GB-1142039-A (GB)
Title: Method and apparatus for the distribution of fibers
IPC: D04H11/00
Filed: 1966-12-15
Abstract: 1,142,039. Textile treating apparatus; feeding flock. BESNIER-FLOTEX. 15 Dec., 1966 [29 Dec., 1965; 20 Jan., 1966], No. 56257/66. Heading D1L. A method of distributing fibres in which the passage of the fibres through a screen is assisted by a plurality of uniformly-spaced brushes moving relative to the screen, also comprises the steps of applying the brushes over the entire width of the screen and feeding a measured quantity of said fibres successively to each brush. A preferred form of apparatus for effecting the method comprises a hopper 21 having a metering device 27 rotating in the outlet thereof; the distributor device comprises a conveyor chain 20 carrying a plurality of brushes 11 and receptacles 25 for the measured quantities of fibres from the device 27: The chain is motor-driven through a variable speed reduction gear 17 which also controls the speed of rotation of the metering device. The conveyor chain is disposed in a tank 30, the lower wall of which is constituted by a screen 15 mounted on slides 16, the brushes 11 contacting the screen 15 during movement of the chain. The chain is made up of articulated links 21, one brush being disposed in the centre of each link at an angle between 80 and 85 to the plane of the link in the direction opposite to the direction of movement of the chain. The receptacles 25 are preferably made of elastic material, the walls of the receptacle being at an angle of 120 to the base. The fibres passing through the screen 15 preferably then pass through an electrostatically charged grid 19. In an alternative embodiment, the base of the receptacle does not extend the full distance between adjacent brushes so that fibres may fall freely through the chain, Figs. 5 and 6 (not shown). In a still further embodiment, the receptacle has only one end wall. In further modifications, two such receptacles are disposed between adjacent brushes, in one the walls of the two receptacles are disposed adjacent the brusnes, and in the other the receptacles are reversed. Figs. 8 and 9 (not shown).
Patent GB-1308926-A (GB)
Title: Method of manufacturing fully austenitic welded joints resistant to heat cracking
IPC: C22C38/58
Filed: 1970-11-27
Abstract: 1308926 Alloys BOHLER & CO AG GEB 27 Nov 1970 [29 Nov 1969] 56395/70 Heading C7A A process of making austenitic welded joints wherein an austenitic base material is welded with an electrode, both comprising  with the balance Fe and impurities to give a weld of similar composition. The resulting welded materials have a high resistance to hot cracking and to corrosion.
Patent GB-1337572-A (GB)
Title: Apparatus for laying filamentary material under controlled tension
IPC: E04G21/12
Filed: 1970-11-27
Abstract: 1337572 Automatic tension control M J DYKMANS 27 Nov 1970 [24 June 1970] 56525/70 Heading G3R The tension in a wire being wound around a circular structure by a carriage moving round the structure is compared with a reference, and restored to the desired value by varying the relative speed of the carriage and a gripping means for applying the wire. In Fig.2, a carriage 7 mounted on wheels 9 is driven round a stationary structure T, e.g. a concrete pressure vessel, by a hydraulic motor 30 driving a sprocket 22 engaging a chain C which surrounds the structure. A wire S, for pre-stressing the structure, is supplied from a reel R and gripped by being spring-urged to a drum 21 which driven from motor 30 through a differential gear 82, chain 16, shaft 40 and chain 41 at a linear speed less than that of the carriage so that tension is applied to the wire as it is wrapped round the structure. A signal dependent on the torque in shaft 40, and hence the tension in the wire, is derived from a strain gauge 100 and compared with a signal from a potentiometer 102 representing the desired tension so that any difference is effective to adjust the speed of a hydraulic motor 92 driving differential gear 82 until the speed of drum 21 is such that the desired wire tension is obtained. A tension indicator and/or a recorder driven synchronously with shaft 40, utlizing a pulse transmitter 360, are provided. A switch LS1 is operated by a member 242 fixed relative to the ground once during each turn round the structure so that a controller 240 is operated to cause a drum 202 to be driven by a hydraulic motor 206 until a cam-operated switch LS2 has been actuated a predetermined number of times. This winds a cable 200 to raise a frame 5 on wheels relative to carriage 7 so that the wire is laid at a gradually increasing height on the structure until the height for the next turn is reached. A pump 207 for the hydraulic system is driven by motor 30 so that the rate of increase of the wire height is dependent on the rate of laying. A dog 91A may be engaged to prevent reverse rotation of the differential gear. Controller 240 includes switches which may be set according to whether upward or downward winding or manual control is desired.
Patent GB-1408170-A (GB)
Title: Process for separating uranium isotopes
IPC: B01D59/18
Filed: 1972-12-11
Abstract: 1408170 Separating gases MOBIL OIL CORP 11 Dec 1972 [12 Jan 1972] 57015/72 Heading B1L A gaseous mixture comprising relatively light and heavy components is introduced into the nozzle 11 and expands to form a supersonic stream which is passed through a series of probes 13 disposed entirely within the supersonic portion of the stream whereby a detached stationary shock wave forms ahead of each probe and a portion of the gas stream enriched in the heavier species is withdrawn from the probes. All the probes in a given transverse plane have axes separate and distinct from one another and are located in at least 3 transverse planes with respect to the axis of the flow of the stream. The gaseous stream can comprise isotopes decay of the longer-lived isotopes and the of uranium hexafluoride.
Patent GB-1409109-A (GB)
Title: Compressed air vibrator
IPC: B06B1/18
Filed: 1972-12-13
Abstract: 1409109 Vibrators FINDEVA AG 13 Dec 1972 [15 Dec 1971] 57448/72 Heading F2X A compressed air vibrator comprises a cylindrical casing 1 with a plastics cover 3 fitted into the opening at each end. Each cover 3 has a truncated-cone-shaped peripheral surface 3a and a resilient lip 4 which snaps into a groove 2 in the internal surface of the casing 1, a vertical face 3b of the lip abutting the vertical side wall 2a of the groove. Bores 5 in the covers 3 are engaged by the ends 6a of a pintle 6 containing an axial bore 7. One end 6a projects from the associated cover 3 and forms a nipple 6b for the attachment of a compressed air pipe. A longitudinal slot along the pintle opens into the bore 7 and contains a slide 9. The casing 1 also contains an eccentric weight in the form of a freely movable metal rotor 11 of hollow cylindrical shape. The two covers 3 contain outlet holes 12 and in the position of rest of the rotor 11, these holes are covered by the end walls of the rotor 11. Compressed air entering the bore 7 issues through a gap between the slide 9 and the walls of the longitudinal slot, imparting torque to the rotor 11. The latter begins to move and cyclically uncovers and covers the outlet holes 12. The described construction of the covers 3 without central bores 5 is also applicable to compressed air vibrators which make use of a ball as the eccentric weight. In both instances, the internal pressure in the casing assists in pressing the lips 4 against the side walls 2a of the grooves 2 and thus improves the sealing effect.
Patent GB-1424683-A (GB)
Title: Thermosetting phenol-formaldehyde resin and preparation and sues thereof
IPC: C08G8/10
Filed: 1972-12-14
Abstract: 1424683 Phenol-formaldehyde resins COR TECH RESEARCH Ltd 5 Dec 1973 [14 Dec 1972] 57762/72 Headings C3R and C3N A thermosetting phenol-formaldehyde resin having a preponderance of benzyl ether linkages ortho to the phenolic hydroxyl groups is characterized by an infra-red spectrum having the following features: (a) exhibiting high absorption peaks at 1050 cm.<SP>-1</SP> and 1230 cm.<SP>-1</SP>, and (b) a ratio of absorbance at 1010 cm.<SP>-1</SP>, measured from a base line drawn between wave numbers of 1030 cm.<SP>-1</SP> and 950 cm.<SP>-1</SP>, to that at 1230 cm.<SP>-1</SP>, measured from a base line drawn between wave numbers of 1130 cm.<SP>-1</SP> and 1310 cm.<SP>-1</SP>, which is less than 0.1. The resin may be prepared by reacting phenol with formaldehyde in an aqueous reaction medium in the presence of a metal carboxylate catalyst to form a thermosetting phenol-HCHO resin having a preponderance of benzyl ether linkages and hemiformal groups ortho to the phenolic hydroxyl groups, and an infra-red spectrum displaying large absorption at wave number of 1230 cm.<SP>-1</SP> and 1010 cm.<SP>-1</SP>, and reacting the resin with at least one strong acid to cause a decrease of at least 35 % in the ratio of absorbance at 1010 cm.<SP>-1</SP> to that at 1230 cm.<SP>-1</SP> measured from base lines as defined above, to a value less than 0.1 while leaving substantially unaffected the absorption at wave numbers of 1230 cm.<SP>-1</SP> and 1050 cm.<SP>-1</SP>. Suitable acids are aryl sulphonic acids such as toluene or benzene sulphonic acid preferably in an amount of from 0À25-1À5% wt. of the resin ; phosphoric acid preferably in an amount of from 1-3% wt. of the resin, or sulphuric acid. The resin may be thermoset by the application of heat and/or additional quantities of acid. The molar ratio of HCHO to phenol used to form the initial resin is generally from 1.5 : 1 to 2 :1. The resin may be rendered tacky by the addition of small quantities of an organic solvent such as phenol or benzyl alcohol or by heating to a temperature above its glass transition temperature but below its cure temperature, the temperature typically being 100-300‹ F. The resin can be used as a binder for shell moulding sands or in the manufacture of composite boards from rice husks or wood chips. In these cases the acid used to form the resin of the invention may be added to the initial resin either before or after the resin has been applied to the particles. The resin can also be used in making plywood or wood-paper composites.