baber/WOPTO huggingface dataset:
Patent GB-1422420-A (GB)
Title: Process and apparatus for determining the variation of tensile stresses in cold-rolled metal strip
IPC: G01L5/04
Filed: 1973-09-03
Abstract: 1422420 Measuring tension electrically/photoelectrically VEREINIGTE OSTERREICHISCHE  EISEN-UND STAHLWERKE-ALPINE MONTAN AG 3 Sept 1973 [23 May 1973] 41386/73 Headings G1A and G1N [Also in Divisions G3 and H4] The variation of tensile stress in cold-rolled strip material over its width is measured by vibrating the strip between at least two supports extending in the width direction and determining the natural resonant frequency, by non-contacting means, of each of several zones distributed across the width and extending in the longitudinal direction of the strip. For ferromagnetic strip, vibration is induced by A.C. energized (and D.C. polarized) solenoids arranged in a row extending across the strip. For conductive strip, vibration may be generated by the interaction of eddy currents (induced in the strip by the solenoids) with the solenoid magnetic fields, or by passing current through the strip (via support rollers) and through conductor bars disposed near the strip. An alternative vibration generator is a pressure-modulated air jet, usable with non-conductive strip. The strip vibration is sensed by microphones, inductive or capacitive pick-ups, or photo-detectors receiving light reflected from the strip. The strip is excited either by a pulse to cause "ringing" vibrations, or by a frequency-swept excitation signal, or by a closed-loop system in which vibrations are sustained by positive feedback. The sensor outputs are amplified, filtered to remove harmonics of the natural frequency signals, and drive a frequency measuring and recording device. Resonance may be registered by the amplifier output rising sufficiently to trigger a threshold detector which then causes sampling of the output of the frequency measuring device. The resonant frequencies for the several width zones are utilized by a device which regulates the rolling process to give a flat (hence uniformly stressed) strip. To reduce interaction between the vibrations in the different zones, a set of alternate width zones may be vibrated at one instant and the set of intermediate zones vibrated at a subsequent instant, or the two sets may be vibrated simultaneously but disposed such that one set is spaced from the other in the longitudinal direction of the strip and isolated from the other by strip-supporting rollers. For sensing the strip vibration optically, light from a source 36 Fig. 12 is directed on to the strip via negative lens 37, glass fibre bundles 38 and lens system 39. Light beams 29 are detected, after reflection from the strip, by individual receivers each including Fig. 13 a lens 31, glass fibre bundle 32, mirror 33, lens 34 and photo-detector 35.
Patent GB-1253939-A (GB)
Title: Improvements in or relating to transistor amplifiers
IPC: H03F3/45
Filed: 1970-08-28
Abstract: 1,253,939. Transistor amplifiers. SIEMENS A.G. 28 Aug., 1970 [29 Aug., 1969], No. 41440/70. Haeding H3T. A transistor amplifier comprises an input differential amplifier consisting of NPN transistors 1, 2 to whose bases signals of opposite phase may be applied, the collectors being connected to a supply voltage via resistors 9, 10 and each emitter being connected to a reference potential terminal via a common controlled current source, i.e. NPN transistor 3 and resistor 11, the base of the NPN transistor 3 being connected to the base and collector terminals of a reference transistor 8, the output of the differential amplifier being fed to a desymmetrizing stage consisting of a PNP transistor 5 whose emitter is connected to the collector of 2 and having its base connected to the emitter of an NPN transistor 4 also forming part of the desymmetrizing stage with its base connected to the collector of 1 and its collector connected to the supply voltage, the base of transistor 5 being also connected via a further resistor 12 to the base of the reference transistor 8, the output of the de-symmetrizing stage provided at collector of 5 being applied to an output stage consisting of NPN transistors 6, 7, the base of 6 being coupled to the collector of 5 and via a resistor 13 to the emitter of 6 and the base of 7 and also connected via a further resistor 14 to the reference potential terminal, the collectors of transistors 6, 7 being connected together with an output terminal. The transistor amplifier may be formed as an integrated circuit. The reference voltage transistot 8 connected up as a diode compensates for temperature-dependent variations of the base-emitter voltages of the other transistors. The combination of reference transistor 8 with the negative feedback transistor 3 provides a D.C. control loop with negative feed-back and good stabilization of the working points. The de-symmetrizing circuit 4, 5 produces an unbalanced signal from the symmetrical signals at the outputs of the differential amplifier by introducing a potential shift and the output stage is a Darlington type of amplifier not requiring an impressed current (load independent current) source transistor.
Patent GB-902729-A (GB)
Title: Process for the production of polyolefins
IPC: C08F10/00
Filed: 1958-12-23
Abstract: Compositions of a polymer of an olefin and carbon black, are made by polymerizing an olefin in a liquid reaction medium containing per kilogram, more than 5 grams of carbon black, in the presence of a catalyst comprising a mixture of an organometallic compound of a metal of Group I to III of the Mendel<\>aeeff Periodic Table and a compound of a metal of sub-group IVa to VIa of this Table.  The size of the carbon black particles are below 250 microns.  The exemplified olefin is ethylene, and the catalyst used is a mixture of aluminium triisobutyl and titanium trichloride which was obtained by reacting equimolar proportions of aluminium triethyl and titanium tetrachloride.  The liquid reaction medium is generally a hydrocarbon which may contain a small amount of an alcohol.  The carbon may be added before, with, or after the catalyst.
Patent GB-1378225-A (GB)
Title: Process for wet treatment of textile webs of fabric
IPC: D06B7/08
Filed: 1972-09-07
Abstract: 1378225 Wet treatment of fabrics KLEINEWEFERS INDUSTRIE COMPANIE GmbH 7 Sept 1972 [7 Sept 1971] 41657/72 Addition to 1321908 Heading DIL  In a process for the wet treatment of textile webs the web is passed through an apparatus comprising an impregnating unit having a set of rolls pressed together and arranged for the web to be firmly guided over the rolls and wherein the web is impregnated by dipping into a strong dye or by spraying on such liquid and the impregnated web wound on a drum by pressure of the final roll of the set against the drum under a constant force and wherein during the winding on of the web on the drum weak dye liquor is pumped on or through the wound-on web of fabric. The apparatus is substantially identical to that described in Specification 1321908 except that means is provided to prevent the liquor pumped on or through the wound-up web from contaminating the liquid impregnant.
Patent GB-1000505-A (GB)
Title: 2-(ª‡-oxo-aralkyl)benzimidazole compounds, and process of making same
IPC: A61K31/415
Filed: 1961-11-21
Abstract: The invention comprises compounds of the formula <FORM:1000505/C2/1> and their pharmaceutically acceptable acid addition salts, wherein R is a dialkylamino alkyl, monoalkylamino alkyl, hydroxy alkyl, piperidino alkyl, or morpholino alkyl group. R1 is an aralkyl group of the formula <FORM:1000505/C2/2> <FORM:1000505/C2/3> wherein n is 0 or an integer from 1 to 4, m is an integer from 1 to 4 and R2 to R6 are hydrogen or halogen atoms or alkoxy, nitro, amino, monoalkylamino, dialkylamino, monoacylamino or C1- 5-alkyl groups, and the preparation thereof either by reacting a compound of the formula <FORM:1000505/C2/4> with an alkyl halide R-Hal in the presence of agents capable of splitting off and binding hydrogen halide; or by reacting a compound of the general formula <FORM:1000505/C2/5> with agents capable of oxidizing a secondary alcohol group to a keto group; or by reacting a compound of the general formula <FORM:1000505/C2/6> wherein R8 is halogeno alkyl, with a mono- or dialkyl-amine, piperidine or morpholine.  2 - a  - Hydroxybenzimidazoles are prepared from an N-substituted or -unsubstituted o-phenylene diamine and an appropriate mandelic acid or its imino ether.  2 - a  - Ketobenzimidazoles of Formula V are prepared by oxidation of the corresponding 2-a -hydroxybenzimidazole with selenium dioxide.  Benzimidazoles of Formula VI are prepared from the corresponding 1-hydroxy alkyl derivatives by halogenation. 4-Methoxy phenyl lactic acid nitrile is prepared from anisaldehyde and monochloroacetic acid to form the 4-methoxyphenylacetaldehyde and reacting the bisulphite with a cyanide. The nitrile is converted into the imino ether.  Pharmaceutical compositions, having analgesic and spasmolytic activity, contain the compounds of the invention and may be formulated as tablets, pills, dragees, capsules, suppositories and solutions for parenteral administration.
Patent GB-975294-A (GB)
Title: Apparatus for bending steel mesh and the like
IPC: B21D11/12
Filed: 1962-11-06
Abstract: 975,294. Bending steel mesh. BAU-STAHLGEWEBE G.m.b.H. Nov. 6, 1962 [Nov. 6, 1961], No. 41897/62. Addition to 918,214. Heading B3E. Apparatus for bending steel mesh comprising a support for the mesh and a bending member pivotable about an axis parallel to the edge of the support, the support or the bending membel carrying bending dies, spaced to conform to the spacing of the rods of the mesh, aligned with the axis of rotation of the bending member and provided with lateral recesses to receive the rods of the mesh is characterized in that the dies are adjustable in the direction of the aligning axis to compensate for variations in the rod spacing. Steel mesh, to be bent, is laid on supporting beam 2 and over a bending beam 3 with the rods 8 of the mesh resting against legs 6 and under cylindrical die portions 7 of bending dies 5. The dies 5 are carried by plates 4, 4a, 4b, adjustable by screw-and-slot means 10, 11 along the support 2. The rods 8, and thus the mesh, are bent by turning the bending beam 3 about the axis of die portions 7. The plates 4, 4a, 4b carrying the dies may be mounted on the beam 3.
Patent GB-949106-A (GB)
Title: An improved transistor pulse generator
Inventor: CORNEY JOHN VICTOR JAMES
IPC: H03K17/18
Filed: 1961-11-24
Abstract: 949,106. Transistor pulse generating circuits. FERGUSON RADIO CORPORATION Ltd. Nov. 15, 1962 [Nov. 24, 1961], No. 42150/61. Heading H3T. In a transistor pulse generator of the type in which a transistor T is normally heavily conducting and which is cut off by an appropriate pulse transistion applied through a capacitor to its base, the transistor returning to its heavily conducting state after an interval determined by the time constants of the circuit, charge storage effects are removed by applying current feedback from the collector to the base by means of diodes D0, D1, D2 which latter two diodes are poled oppositely to diode D0 and maintain a potential difference between the base and collector to oppose bottoming of the transistor. In order that positive-going edges of the input pulses at VIN have no effect on the output waveform capacitor C is connected to the junction of series connected diodes Dm, Dn connected between the base of the transistor and a point of fixed potential. In operation negative-going transitions in VIN take the transistor from a heavily conducting state to a cut-off state, which latter state exists until the charge leaks away exponentially from the capacitor C with a time constant determined by the capacitor C and the base resistance and the transistor is turned on again. Positive-going transitions of the input pulse VIN reverse bias diode Dm and forward bias Dn so that these transitions do not reach the base of the transistor and have no effect on the output waveform at VOUT. In addition the base-to-emitter potential difference of the transistor is not zero so that diodes Dm, Dn are forward biased in the quiescent state and produce a corresponding potential difference across diodes D1, D2. However, in the active period of pulse generation diode Dn is reverse biased and the current through diode Dn and the base-emitter diode of transistor T ceases and so does not modify the current through Dl, D2, with the result that the asymptotic limit of the exponential run back of the potential at Y and hence the output pulse width is not dependent on the supply potential so long as the input signal amplitude is in a constant proportion to the supply potential.
Patent GB-1172742-A (GB)
Title: Homogeneous Copolymers of Ethylene.
IPC: C08F20/62
Filed: 1967-09-18
Abstract: 1,172,742. Copolymerizing ethylene. ALLIED CHEMICAL CORP. 18 Sept., 1967 [19 Sept., 1966], No. 42416/67. Heading C3P. Low molecular weight normally solid, polyethylene-free copolymers of ethylene with one or more unsaturated C 3 _ 6  monocarboxylic acids or C 4-8  dicarboxylic acids or amides, acid halides, salts or esters thereof in which the alcohol residue contains 1 to 6 carbon atoms are prepared by heating a major proportion by weight of ethylene and a minor proportion of comonomer, a chain transfer agent and a free radical initiator, all being substantially in the vapour phase, at 100‹ to 300‹ C. and 100 to 1000 atmospheres, with turbulent agitation, in an enclosed reaction zone under continuous reaction equilibrium, and controlling the feed of reactants to the reaction zone, the temperature and pressure within the zone and the discharge of off-gas so that the weight ratio of the proportion of comonomer units in the copolymer product to the proportion of comonomer in the total monomer fed is 0.7 : 1 to 1.8: 1. Reactants may be introduced at a plurality of places in the reactor. The products may be emulsified with anionic and non-ionic emulsifiers to give polishing compositions. Specified comonomers are acrylic, methacrylic, crotonic, maleic and fumaric acids, acrylyl chloride, acrylamide, methyl acrylate, ethyl acrylate, methyl methacrylate and dimethylaminoethyl methacrylate. Many suitable chain transfer agents and initiators are listed and examples describe reactions of ethylene and isopropanol together with (1-4) acrylic acid and di-t-butyl peroxide, (5 and 6) methyl acrylate and hydrogen peroxide, (7) methyl methacrylate and hydrogen peroxide, (8-11) dimethylaminoethyl methacrylate and di-t-butyl peroxide, (12-15) acrylamide and di-t-butyl peroxide, (16) maleic acid and hydrogen peroxide, and (17 and 18) fumaric acid and hydrogen peroxide.
Patent GB-982844-A (GB)
Title: Rotor assembly for electrical apparatus
Inventor: PUDER ALLEN T
IPC: H02K1/27
Filed: 1961-11-28
Abstract: 982,844. A.C. generators. BORG-WARNER CORPORATION. Nov. 28, 1961, No. 42576/61. Heading H2A. A rotor assembly for electrical apparatus comprises a pair of opposed spindles 18, 33, a plurality of permanent magnet sections, and fastener means holding the magnetic sections and separator plates 27 in assembled parallel stacked relation transverse to the axis of the rotor, the magnetic sections each comprising a one-piece permanent magnet 30 having arcuate outer surfaces 31, 32 and a plurality of flat laminations 22, each having an arcuate inner edge 25 to match an arcuate surface of the magnet and a projection 26 extending from each of its ends to provide interconnected cavities between the laminated plates and the magnet 30, the laminations being arranged with their inner arcuate surfaces in pressfitted contact with an arcuate surface of the magnet, and metal filling the cavities and extending to the exterior of the rotor assembly. In Figs. 1 and 2, the magnetic section and the stainless steel separator plates are riveted 21 together. The cavities 35, 36, 37 are filled with aluminium by casting. Aluminium retained in slots 24a acts as damper bars 34.
Patent GB-1483626-A (GB)
Title: Broadcast receiver tuning circuit
IPC: H03J7/26
Filed: 1974-10-01
Abstract: 1483626 Stop on signal receivers PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 1 Oct 1974 [4 Oct 1973] 42602/74 Heading H3Q In a receiver tuning arrangement the tuning frequency sweep of a frequency sweep circuit 23, Fig. 1, is automatically restarted, a given time after it has been halted on detection at 17 of a received station, by a time constant circuit 27, a manual control device 35 is coupled to activate the frequency sweep circuit by a route which does not include the time constant circuit and automatic frequency control at 19, 21 is deactivated only while the receiver tuning frequency is being swept. Operation of contact 95 or 97, Fig. 2, of device 35 selects the direction of search under control of current source transistors 49, 51 which sweep charge across a capacitor 53 and the tuning of a voltage controlled tuner 3 of a radio or TV in one or other direction. When a station is detected by frequency detector 7 the highest voltage at input 13 or 15 of a detector 17 is applied via a transistor 61 or 63 to the input of the time constant circuit 29. This causes an SCR 75 to be turned on, which discharges a capacitor 79 and causes a transistor 85 to turn off so as to lower the output at 31 applied to the operating device 35. This turns off a transistor 111 so that the outputs 39 and 41 stop the signal sweep, also a switch 135 and a gating circuit 133 provide an output at 37 to an input 43 of the station finder 23 to enable a frequency control signal amplifier 123 so that the AFC signals applied at 19 and 21 now control the charge on the capacitor 53. After a charging time for the capacitor 79 in the time constant circuit 29 of, e.g. 1À5 sec. the output 31 returns and the operating device 35 functions to disable via 43 the AFC and start the signal search in the selected direction. The tuning will only remain at the stopped station if the contact 95 or 97 of the operating device 35 are operated during the 1À5 sec. time delay of the circuit 29 to indicate that the tuning is to remain at the stopped station. The output 147 can be used for blocking the sound section of the receiver during station finding. The station finder 23 has a stabilizing circuit 121. The receiver may be manually tuned to a number of transmitters for which the tuning voltages can be obtained from output 60 via a switch 57. Instead of the detector 17 being active on the output of the frequency detector 7 a detector circuit active on another signal such as a pilot signal can be used. The tuning circuit may be built up with the aid of an integrated circuit.
Patent GB-1184955-A (GB)
Title: Distance Measuring Device
IPC: G01S17/32
Filed: 1967-09-21
Abstract: 1,184,955. Optical range determination. AGA A.B. 21 Sept., 1967 [19 Oct., 1966], No. 42941/67. Heading H4D. [Also in Division G1] The Specification relates generally to an optical range finder of the type wherein amplitude modulated light is transmitted to the target and the phase of the modulation of the reflected light is compared with that of the transmitted light. To determine the range of the target from this comparison, an exact knowledge of the velocity of light or of the variation of the refraction index throughout the light path, is necessary. The refractive index n is related to a standard refractive index n 0  by:- n = 1 + (n 0 - 1)p where p is a factor proportioned to pressure and inversely proportional to temperature. The invention is thus concerned with determining p for the entire light path. For wavelengths # 1  and # 2 , n 1  = 1 + (n 01  - 1)P n 2  = 1 + (n o2  - 1)p Since the velocity of light C is inversely proportional to n, and the time T for light to travel to the target and back is inversely proportional to C, then The invention thus determines (T 1  - T 2 ). A transmitter 1 directs two beams of light (infrared or ultra-violet being included in light) at wavelengths # 1  and # 2  and equally amplitude modulated by oscillator 2. The light beams, after reflection by the target, are separated by filter 5 to fall on respective photomultiplier detectors 6 and 9. The output of detector 6 is fed to one input phase detector 7 for phase comparison with the modulation oscillator output via adjustable delay 3. Delay 3 is adjusted until the phase difference is zero. The output of detector 9 is similarly phase compared with the delayed oscillator output in phase detector 10. A variable light path delay 8 is added however, and is adjusted until the output of detector 10 indicates zero phase difference. The setting of delay 8 then represents (T 1  - T 2 ). The required simultaneous zero outputs of detectors 7 and 10 is indicated by zero indications on bridge meters 11 and 12.
Patent GB-1100685-A (GB)
Title: Improvements in or relating to anodic protection
Inventor: NEUFELD PETER
IPC: C23F13/00
Filed: 1963-10-31
Abstract: In an anodic protection system, e.g. as described in Specification 934,077, the cathode comprises a base of carbon, Ag, Cu, bronze, Ni, cupro-nickel, Fe, Pb or Monel metal (Registered Trade Mark) and a coating of Au, Ir, Rh, Pt or Pd formed either by electro-deposition, sputtering, vapour deposition or chemically.
Patent GB-1513610-A (GB)
Title: Apparatus for playing a goal-shooting game
IPC: A63F9/00
Filed: 1976-10-18
Abstract: 1513610 Basketball game TOMY KOGYO CO Inc 18 Oct 1976 [27 Oct 1975] 43175/76 Heading A6H A goal-shooting game (having a light 92 oscillating between goals 17) comprises a chassis 32 in a housing 15 having a translucent screen 16, two rotatable actuator knobs 21 on the housing each engaging a lever 23 in the housing, first and second force transmitting assemblies 40, 40 mounted for translational movement 41 between a first position in contact with the levers and a second higher position, means 67, Fig. 9, mounting a carriage 60 for translational motion, means 82 mounting a rocker arm 80 on the carriage, light source means, (batteries 98 and bulb 94) for projecting the lighted image 92 onto the screen, mounted on the rocker arm, force arms 69 mounted for rotation on the carriage so that the force transmitting assemblies may hit one of said force arms to cause the carriage to move translationally and the rocker arm to rotate; counter mechanisms and counter arms 110 disposed in the rotational path of the rocker arm so that when the rocker arm makes sliding contact with the counter arm the counter mechanism increments one position (through an escapement mechanism). Hands 103 indicate the scores. When a knob 21 is moved sharply down, the associated assembly 40 is projected up its guide to hit an arm 69 causing it to rotate and move the carriage 60. If the knob is not struck with sufficient force the assembly 40 drops back and also the rocker arm 60, if it has been displaced at all. The axle 82 of the rocker arm 60 is retained in its mounting groove 70 by a clip 71 which can be swung aside to release a spring 74 from a pin 75.