baber/WOPTO huggingface dataset:
Patent GB-1251604-A (GB)
IPC: H03M1/00
Filed: 1969-01-20
Abstract: 1,251,604. Analogue/digital converters. TELEFONAKTIEBOLAGET L. M. ERICSSON. 20 Jan., 1969 [18 Jan., 1968], No. 3232/69. Heading G4H. In apparatus for companding and coding, an analogue signal at terminal 1 (Fig. 1) is converted to a signal comprising digital bits at terminals D0, D1, D2 and an analogue output signal at terminal U. The analogue output signal may be digitized in a conventional stage by stage coder LK. The system may be used in reverse to decode. In the embodiment described the first digital bit D0 is determined in accordance with the polarity of the input signal which is then rectified and fed together with a reference signal E1= a + ak to a subtractor S1. The second digital bit is determined by the polarity of the output from the subtractor S 1 and positive output signals are fed via rectifier L1a, amplifier F1a (having amplification m) to a subtractor S2a where a reference signal E2a = ak<SP>2</SP>m is subtracted, the polarity of the resultant signal being determined and fed via a modulo 2 gate G2 to output D2. Negative signals are fed via a rectifier L1b, amplifier F1b (of amplification mk<SP>2</SP>) to subtractor S2b where a reference signal E2b=ak<SP>3</SP>m is subtracted and the polarity of the resultant signal determined and fed via the modulo 2 gate G2 to the output D2. Positive output signals from the subtractors S2a, S2b are fed via rectifiers L2a, L2c and amplifiers F2a, F2c (of amplification n) to a summing network R negative signals being fed after rectification and amplification by a factor kn to the summing network R via inverters. The output of the summing circuit is converted in a conventional analogue/digital converter LK.
Patent GB-1252642-A (GB)
IPC: G06V10/36
Filed: 1969-02-25
Abstract: 1,252,642. Pattern recognition. INTERNATIONAL COMPUTERS Ltd. 23 Feb., 1970 [25 Feb., 1969], No. 10025/69. Heading G4R. In data pattern processing apparatus, a plurality of pattern sensors, arranged in matrix formation to sense respective elementary areas of the pattern, feed pattern-area-significance signals to a plurality of logic units also receiving a timing waveform, a logic unit being responsive to the signals and the waveform to produce an output signal having a timing dependent upon the relative significances and positions of more than one of the elementary areas. The logic units recognize pattern features, independently of their orientation, and feed resulting signals to a recognition network for the pattern. Fig. 3 shows a typical one of the logic units, fed with the timing waveform from 34. Over lines 4, the pattern sensor for a particular area controls a bistable 10 and those for the 8 immediately surrounding areas control respective bi-stables only two of which 17, 18 are shown. Each bistable, depending on its state, gates the timing waveform, or its inverse from 14, to a respective delay line 16, 22, 26. The inversion 14 effectively delays the waveform by 180 degrees. The taps shown on the delay lines are a distance apart corresponding to a 45 degree rotation about the particular pattern area that the respective bistable corresponds to. A different tap on each of the delay lines, such as 22, 26, corresponding to the immediately surrounding areas, is connected to an AND (or 7-out-of-8 majority logic) gate 27 to recognize a particular feature, the orientation of the feature merely affecting the time at which the recognition pulse is produced. Gate 27 feeds the pattern recognition network over line 6a, and if necessary reverses the state of bi-stable 10 (which also feeds the pattern recognition network, over line 6b) to correct pattern noise. The timing waveform may be square-wave, sine wave or digitized sine wave. The signals from the sensors may be analogue or digitized. Gate 27 may be a threshold logic element with an adjustable threshold. Feature recognition may permit certain areas to have either value, either by not connecting these areas to such gates as 27, or in the analogue case arranging the phasing of the signals from these areas so that they make only a small contribution, or by connecting an additional waveform to the OR gates shown so that the areas always provide a white, say, irrespective of the bi-stable setting. The inputs to the gate 27 may be weighted so that a threshold logic circuit can be used while retaining a digitized timing waveform. A single delay line can be used. Each logic unit could deal with the states of the four areas with a common corner.
Patent GB-1252691-A (GB)
Inventor: PETERSON JOHN A
IPC: C25F3/00
Filed: 1969-01-02
Abstract: 1,252,691. Electro-machining. HOOKER CHEMICAL CORP. Jan.2, 1969 [Jan.15, 1968], No. 400/69. Heading C7B. [Also in Division C1] In electro-chemical machining processes, in which metal is removed electro-chemically from a chromium-containing workpiece by the application of electrical current from a cathode die to the workpiece anode, there is used as electrolyte an aqueous alkali metal chlorate or ammonium chlorate solution from which trace amounts of hexavalent chromium ion that derive from the anode are removed by introducing into it a soluble salt of divalent Fe, Sn, Ba, Co, Pb, Zn, Cu, an alkali metal sulphide or (NH 4 ) 2 S, and then removing the resulting precipitate.
Patent GB-1257991-A (GB)
IPC: C07D203/08
Filed: 1969-05-09
Abstract: 1,257,991. Treating textiles. BADISCHEANILIN- & SODA FABRIK A.G. 9 May, 1969 [11 May, 1968], No. 23673/69. Heading DIP. [Also in Division C2] #-Aziridinyl lactamides of the general formula:-  (where R<SP>1</SP> is hydrogen or an aliphatic radical, and the R<SP>2</SP> radicals, which may be the same or different, are hydrogen, or aliphatic, cycloaliphatic, araliphatic or carbocyclic aromatic radicals) can be methylolated to give textile auxiliaries, suitable for the crease resist finishing of cotton, shrinkproof and swellproof finishing of rayon staple fibre, and stiffening of cellulose fabrics, and which by copolymerisation with aziridines can yield modified polyalkylene imines suitable as paper auxiliaries. Thus, cotton cloth can be impregnated from aqueous solution at a rate of 50-150 g./Kg. fibrous material with a 1:2 reaction product of a #-aziridinyl lactamide and HCHO, followed by drying at 120-60‹C to give a crease resist material. Paper pulp is impregnated with a modified polyalkyleneimine (1-20 g./Kg. cellulose) and dried to yield wet resistant, low swelling filter papers or artificial leather material.
Patent GB-1264254-A (GB)
IPC: C08F4/70
Filed: 1969-09-03
Abstract: 1,264,254. Hydrogenation catalysts. INSTITUT FRANCAIS DU PETROLE DES CARBURANTS ET LUBRIFIANTS. 3 Sept., 1969 [5 Sept., 1968; 24 Dec., 1968; 17 Feb., 1969], No. 16732/70. Divided out of 1,233,129. Heading B1E. [Also in Division C5] Hydrogenation catalysts, some of which are claimed per se, comprise reaction product of (1) a transition metal compound, with (2) an aluminium compound of formula Al H n X 3-n , where n is 1 or 2, and the X radicals are each OR, NR 2 , NHR, or SR, R being an organic group, with the proviso that two x radicals may be joined to form an -A-Z-B-group, where A and B are alkylene groups, and Z is alkylene, oxygen, sulphur, NH, N-hydrocarbyl or polyvalent metal. An electron device may also be present, e.g. an ether, amine, heterocyclic compound, phosphine oxide or phosphine. The catalysts may be supported, e.g. on molecular sieves, alumina or silica. Typical of many catalysts components specified are (1) Co Br 2  (pyriden), Co Br 2  [PO (naphthyl)' 3 ] 2  Ti Cl 2  (indenyl) 2 , Ti(S.C 6 H 5 ) 2 (cyclopentadienyl) 2 , Fe Cl 3 , Zn (acetylacetonate) 2  and Ni Cl 2 [P(C 6 H 11 ) 3 ] 2 ; and (2) Al H (O-tert Butyl) 2  and Al H
Patent GB-1288039-A (GB)
IPC: F25B9/06
Filed: 1968-12-10
Abstract: 1288039 Refrigerating BRITISH OXYGEN CO Ltd 9 Dec 1969 [10 Dec 1968] 58584/68 Heading F4H A gas cooling system comprises an expansion turbine 2 for expanding and cooling the gas fed thereto under pressure against a load exerted by a brake 4, the load being adjustable in dependence upon the input temperature of the gas entering the turbine through a conduit 1. The brake is mounted on a shaft common to the turbine and comprises a paddle revolving in a gas atmosphere, the pressure of which is controlled via a valve 7. dependent on the gas inlet temperature as sensed by a unit 6 to maintain constant rotational speed of the turbine. Heat produced by the brake is removed by circulation of the braking gas through a heat exchanger 5.
Patent GB-1288455-A (GB)
IPC: F16K27/02
Filed: 1970-05-15
Abstract: 1288455 Valves STOCKPORT MFG CO (1950) Ltd 19 April 1971 [15 May 1960] 23608/70 Heading F2V Fluid flow between an annular chamber 11c and a port (not shown) in a bore 12, is controlled by a ball valve member 14 which is urged against its seat 15 by a spring 17a and is movable away from the seat by the downward movement of piston rod 18a, the rod being connected to a fluidoperated piston 18 which is selectively connectible to a pressure source. The seat 15 and a substantial portion of annular chamber 11c are defined by a sleeve 11 which is itself in screw-threaded engagement with a body 13 and which has screw threaded thereinto a cup-shaped member 17b, the sleeve being ported at 11d.
Patent GB-1289987-A (GB)
Filed: 1969-10-23
Abstract: 1289987 Polymers of 4-vinyl-azetidinone-2 FARBWERKE HOECHST AG 23 Oct 1969 [25 Oct 1968] 52002/69 Heading C3P Polymers of 4-vinyl-azetidinone-2 are obtained by polymerization using a free-radical catalyst. In examples, homo- and co-polymers with ethylene, ethylene/crotonic acid, styrene/ 2-ethylhexyl acrylate, acrylonitrile, maleic anhydride, vinyl acetate, N-vinyl-N-methyl acetamide, and vinyl isobutyl ether are obtained using azobisisobutyronitrile, di-t.-butyl peroxide or t-butyl perbenzoate initiators, and in some cases converted, by ring-opening, to the acid or acid ester grouping together with a quaternary ammonium chloride grouping.
Patent GB-1290489-A (GB)
IPC: C08G18/28
Filed: 1968-12-02
Abstract: 1290489 Polyurethane prepolymers EVOMASTICS Ltd 24 Dec 1969 [2 Dec 1968] 57037/68 Heading C3R Polyurethane prepolymers containing free isocyanate groups and curable in contact with atmospheric moisture are prepared by reacting a polyol and an aliphatic saturated monohydric alcohol containing only one active hydrogen atom with an organic diisocyanate, the proportions of the reactants being such that the monohydric alcohol contributes from 0À26 to 0À52 equivalents of hydroxyl groups per equivalent of hydroxyl groups arising from the polyol. Suitable polyols are polyalkylene glycols or polyether triols, and suitable monohydric alcohols are fatty alcohols having chains of 9 to 20 carbon atoms. Exemplified diisocyanates are methylene, diphenyl and toluene diisocyanates, preferably used in amounts such that the reaction mixture contains from 1À5 to 4 equivalents of isocyanate groups per equivalent of hydroxyl groups arising from the polyol. Uses.-For compounding with dry plasticizers (e.g. polyesters, chlorinated biphenyl or coal tar pitch), fillers, pigments and catalysts to provide mastic, sealant and caulking materials.
Patent GB-1295544-A (GB)
IPC: B63B9/00
Filed: 1970-04-08
Abstract: 1295544 Building ships J ANDERSON 19 April 1971 [8 April 1970] 54080/71 Divided out of 1295543 Heading B7S [Also in Division G1] An adjustable template for recording hull profiles comprises a rigid frame carrying a plurality of spaced adjustable measuring heads 5, each measuring head being provided with means for moving it relative to the frame and for holding it in any desired position relative to the frame. In the embodiment shown the hull bilge, side and bottom plates 20, 21, 22 are surrounded by a rigid frame comprising two side portions 1 connected by a central portion 3 which has length adjustment links 8.
Patent GB-1297282-A (GB)
IPC: B41F15/08
Filed: 1970-02-09
Abstract: 1297282 Endless chain conveyers W KAMMANN [trading as WERNER KAMMANN] 9 Feb 1970 [10 Feb 1969] 6063/70 Heading B8A Conical or cylindrical articles 14 are transported by at least two conveyer chains 18 running adjacent to each other in parallel spaced relationship and holding the articles to be moved in prismatic shaped receiving spaces, the links of the chains, provided opposite to each other and in spaced series relationship, being constructed as upwardly projecting drivers 12 having two supporting or contact surfaces 16, 17, of different length, all the receivers with their conveyer chains being arranged to be pivotable from a horizontal plane for aligning the highest longitudinal edge of the cylindrical surfaces of the articles. By suitable grouping of the drivers a small object 14 may be located between opposed short surfaces 16, 16 of adjacent drivers A larger object (15) (Fig. 4, not shown) may be located between the opposed surfaces 17, 17. A conical object (Fig. 7, not shown) may be carried by arranging surfaces 16, 16 on one conveyer chain to be in alignment with surfaces 17, 17 on the other. In Fig. 10 there are three chains each having drivers 35. The centre chain is arranged with its drivers longitudinally disposed relative to those on the outer chains. Each article is thus located by 3 drivers 35 instead of 4 as previously. The chains may be moved axially relative to their drive sprocket shafts.
Patent GB-1297528-A (GB)
IPC: C22C38/48
Filed: 1970-10-01
Abstract: 1297528 Iron base alloy SOC DES ACIERIES DU MANOIR-POMPEY 1 Oct 1970 [22 July 1970] 46720/70 Heading C7A A refractory alloy with high resistance to creep, thermal shocks, heat stress, fatigue and intergranular oxidation and good weldability, comprises:- C 0À05-0À2% Cr 20-30% Nb 0À2-2% Ni 30-40% N 0À04-0À2% Mn 0À8-2% Si 0À8-2% P+S less than 0À05% the balance, apart from impurities, being Fe.
Patent GB-1297907-A (GB)
IPC: G03B27/52
Filed: 1970-03-26
Abstract: 1297907 Electro-photographic copiers XEROX CORP 26 March 1970 [28 March 1969] 14647/70 Heading G2H, G2A The image of a stationary document on a curved support 14 is projected by an optical system 18 onto a photo-conductive drum (or web) 10; the system 18 and drum 10 moving along paths which are concentric with the support 14. As shown, the optical system 18 comprises three strips 20, 22, 24 of lens elements and two lamps 40, and during copying is moved in the opposite direction to drum 10.
Patent GB-1303456-A (GB)
IPC: C09D4/00
Filed: 1970-07-22
Abstract: 1303456 Chemical grouting compositions CEMENTATION CO Ltd 22 July 1971 [22 July 1970] 35619/70 Heading C3P Compositions for use as chemical grouts comprise (a) a water-soluble hydroxyalkyl acrylate and/or methacrylate, (b) an alkylene glycol diacrylate and/or dimethacrylate, (c) a watersoluble silver salt, (d) a water-soluble persulphate, and (e) water. All the examples comprise hydroxyethyl acrylate, ethylene glycol diacrylate, silver nitrate, ammonium persulphate and water.
Patent GB-1305483-A (GB)
IPC: H05K7/14
Filed: 1970-09-07
Abstract: 1305483 Drawers INSTRON Ltd 27 Aug 1971 [7 Sept 1970] 42698/70 Heading A4B [Also in Divisions E2 H1] A front panel 15 is attached to a drawer (seen from the inside) for housing electrical equipment, e.g. chassis (27) Fig.2, (not shown), by plates 23. The plates are slidable in slots 21, 22 of flanges 17, 18 of the panel, the flanges being recessed to accomodate front bars 11, 12 of the drawer. The panel is freed by sliding the plates 23 completely from slots 21, 22, finger grips 24 being provided on the plates. The drawer may have more than one panel 15, as shown, and in this instance the plate 23 additionally serve to lock the panels together. Bars 11, 12 are preferably of circular cross-section so that the panel may be hinged about either by freeing the appropriate side of the panel. Bosses 25 having tapped holes are provided on the panel 15 for attaching the electrical equipment by screws 26.
Patent GB-1305965-A (GB)
IPC: B41F17/24
Filed: 1970-02-25
Abstract: 1305965 Marking moving articles H NIELSES & SON MASKINFABRIK A/S 25 Feb 1970 9175/70 Heading G4H Articles 5 moving on a conveyer are marked by marking nozzles, or plungers 24 operable in combinations to form characters 6, the data to be marked being entered into a store, e.g. from a keyboard, through a read-in unit, and transferred by a read-out unit to a control unit which is coupled to sensing means 20 detecting the entry of the article into the marking zone, to govern the transfer of data from the control unit to the marking elements. A timing device 22 produces signals as the article moves through the marking zone to determine the proper spacing of the characters 6. The read-in unit and the control unit may have lamp arrays connected to them to indicate the last character entered into the store and the next character to be marked on the article. Correction buttons may be provided to cancel characters if they are seen to be incorrect. The marking elements are mounted on a bracket 34 which may move with the conveyer during a marking operation to prevent smudging. Instead of an array of marking elements, a single row of elements may be arranged across the direction of movement of the conveyer operated repeatedly to form each character. The marking may be colour spots or spots of magnetic or radio-active material that can be sensed even after being covered by a further layer of paint. The marking elements may be operated pneumatically or electromagnetically, the control signals being applied through thyristors, transistors or relays to magneti operating valves or operating solenoids.
Patent GB-1306568-A (GB)
Title: Rotary drilling tool for use in well bores
IPC: E21B21/00
Filed: 1971-11-09
Abstract: 1306568 Boring earth &c F K FOX 9 Nov 1971 52042/71 Heading E1F [Also in Division F1] A tool 14 in, and rotatable with, a drill string 10 having passages for drilling mud comprises a member 15, a body 16A rotatable about the member and having a spiral fin 28, and means to rotate the body relative the member in a direction to cause the fin to reduce hydrostatic pressure of the drilling mud in the annulus A below the fin. The body has a further fin 29 and is rotated in the direction of the strings rotation by a multi-stage turbine having stator and rotor blades 35, 36 respectively. The rotating body which forces the mud upwardly in the annulus is assisted by a body 16B which is rotated in the opposite direction to reduce the torque effect of the body 16A. A centralizer 32 is fitted in the string.
Patent GB-1309255-A (GB)
Title: Vibrating responsive apparatus
IPC: G01H9/00
Filed: 1970-01-28
Abstract: 1309255 Photo-electric detection of vibrations DECCA Ltd 19 April 1971 [28 Jan 1970] 4114/70 Addition to 1173772 Heading G1A [Also in Division H4] In a modification of the vibration responsive apparatus described in Specification 1173772 a single receiver 18 is employed whose output contains sidebands derived from integral multiples cf the modulating frequency. Two of these sidelands, preferably of a different order, are  combined - 20, 23, 24 - to provide a phase modulated signal at the frequency of one of the sidebands and whose instantaneous phase deviation corresponds in magnitude and sense to the velocity of the vibrating object 14. The phase modulated signal may be demodulated by a phase discriminator 25 operated at the modulating frequency of the mirror 16.
Patent GB-1309902-A (GB)
Title: Fish-finding apparatus
IPC: G01S15/96
Filed: 1969-03-28
Abstract: 1309902 Echo sounders NATIONAL RESEARCH DEVELOPMENT CORP 10 June 1970 [28 March 1969] 16540/69 Heading H4D  In a fish-finding sonar "unsymmetrical" waves, i.e. waves the two halves of each cycle of which have different forms, are transmitted and the receiver includes means for determining the polarity of echoes, Unlike echoes from rigid solid objects, echoes from fish exhibit reversal of polarity. In an embodiment a transducer 3 emits pulses on a carrier frequency f and a transducer 6, on frequency f/2. The outputs of transducers 7, 8 are equalized and the composite signal from amplifier 11 is applied in parallel to Schmitt triggers 12, 13 set to levels +V, -V, see also, Fig. 2 (not shown), which are connected respectively to the normal and resetting inputs of a counter 15; the counter produces an output only for fish echoes. A single transmit-receive transducer may be employed. Frequency f is suitably 500 kHz.
Patent GB-1312696-A (GB)
Title: Production of d-selenides
IPC: C07D249/10
Filed: 1970-10-01
Abstract: 1312696 Selenium compounds ILFORD Ltd 14 Sept 1971 [1 Oct 1970] 46800/70 Heading C2C [Also in Division G2] Novel compounds of formula where R 1  is H, alkyl, aralkyl or hydroxy and R is H or alkyl and is bonded to one of the N atoms, the remaining N atoms forming part of the double bond system of the aromatic ring, are prepared by oxidation of preferably in the presence of a base, e.g. with H 2 O 2  in EtOH or I 2  in KI in H 2 O. The products are used in colour photographic processing.
Patent GB-1324023-A (GB)
Title: Circuit interconnecting cables and methods of making such cables
IPC: H01B7/08
Filed: 1971-05-17
Abstract: 1324023 Electric tape cables INTERNATIONAL COMPUTERS Ltd 17 May 1971 [1 Oct 1970] 46844/70 Heading H1A A tape cable having side by side conductors 1 embedded in plastics insulation 2 has an electric screen 9 e.g. copper foil separated from the plastics insulation 2 by an insulating lattice structure 7. The lattice may be secured to the insulation 2 by adhesive or a double sided adhesive tape 8. The lattice may be formed of extruded nylon or polyvinylchloride. The lattice may be formed on both main surfaces of the insulation 2 and the screen is secured only to one lattice so that in a stack of cables the conductors of each pair have a common screen spaced midway between the two sets of conductors. An alternative arrangement has the lattice impressed into the insulation during manufacture. (Fig. 4, not shown).
Patent GB-1335281-A (GB)
Title: Magnetic thin film store
IPC: H01F10/06
Filed: 1971-08-05
Abstract: 1335281 Magnetic storage devices STANDARD TELEPHONES & CABLES Ltd 5 Aug 1971 36830/71 Heading H3B In a method of making a thin film magnetic storage plate, patterns of conductors 2, 3, Fig. 1, are deposited on a magnetic film, and the conductors are then overlaid with a low reluctance magnetic film to form a substantially closed magnetic circuit around the conductors. The first magnetic film 1 is a square loop material such as Ni-Fe, and is electroplated on to a metallized substrate; it is preferably protected by a Ni-Co film 5, Fig. 2. An etchant resistant film 6 of chromium oxide, Cr, Ti or Rh, is then vacuum deposited on film 5, and is covered with a film 7 of silicon dioxide or silicon nitride. An aluminium layer is sputtered on to film 7 and etched to give a first set of conductors 2, which are then covered with further silicon dioxide or nitride 8 and an aluminium layer which is etched to give a second set of conductors 3. Another layer of silicon dioxide or nitride is sputtered over the assembly, and holes are etched through the areas between the conductors down to the etchant resisting layer 6. A low reluctance film 4 is then vacuum deposited to cover the assembly and fill the etched holes. Fig. 2 shows a cross-section of Fig. 1 on line X-X, while in Fig. 3, which is a cross-section of Fig. 1 on line Y-Y, the film 4 is seen to extend down to layer 6. This layer may be etched through with another etchant before film 4 is deposited if it is desired to form a wholly closed magnetic circuit. Various patterns of conductors may be used, including zig-zag and two-core per bit arrangements. The rectangular areas defined between the sets of conductors in Fig. 1 may have their corners removed or their sides indented, Figs. 5 and 4 respectively (not shown), to increase output or minimize interaction between bits.