baber/WOPTO huggingface dataset:
Patent GB-1090039-A (GB)
Title: Improvements in and relating to control systems for electric motors
IPC: H02P7/295
Filed: 1965-11-26
Abstract: 1,090,039. Control of D.C. motors. CONTRAVES A.G. Nov. 26, 1965 [March 5, 1965; April 22, 1965], No. 50297/65. Heading H2J. [Also in Division G3] The armature MA of a separately-excited motor is supplied from A.C. mains through rectifier SCR, the motor being associated with reversing switches S1, S2, and braking resistor W. A reference voltage Vs is compared with the armature voltage Vi and the difference voltage is applied to firing circuit ZRS. The latter comprises a double integrator R1, C1, and R2, C2, the output of which is applied to the emitter of a unijunction transistor UJT. The base electrodes of the transistor are connected to a voltage source which is stabilized by Zener diode ZD. When the emitter voltage of the transistor reaches a predetermined value, capacitor C2 is discharged and a firing pulse is supplied to the rectifier SCR. An A.C. component voltage, developed across a portion of resistor R1, is passed through rectifier unit P, D, to be superimposed upon the voltage U i . This improves speed-stability with changes of load.
Patent GB-1530158-A (GB)
Title: Bottles for storage under sterile conditions
IPC: B65D1/02
Filed: 1975-12-09
Abstract: 1530158 Bottle necks; closures BEHRING- WERKE AG 9 Dec 1975 [10 Dec 1974] 50417/75 Heading B8T  A bottle, particularly for storage of lyophilized pharmaceutical compositions under sterile conditions, includes a double-conical ring 2 at its neck. The angle of the upper surface of the ring 2 with respect to a plane perpendicular to the bottle axis is in the range 50-60 degrees, preferably 56 degrees, and the angle of the lower surface is in the range 10-15 degrees, preferably 13 degrees. The bottle is closed by a stopper 3 within the neck, and a cap 5 pushed on to the outside of the neck. The cap 5 comprises upper and lower rings joined by frangible material to indicate tampering, the lower ring including a double-conical recess 7 to engage the ring 2 of the bottle.
Patent GB-1153164-A (GB)
Title: Pigment Compositions
Inventor: MITCHELL JOHN
IPC: C08K5/00
Filed: 1966-11-11
Abstract: 1,153,164. Acrylonitrile polymer/pigment compositions. IMPERIAL CHEMICAL INDUSTRIES Ltd. 30 Oct., 1967 [11 Nov., 1966], No. 50591/66. Addition to 978,242. Heading C3P. [Also in Division C4] A process for the mass pigmentation of polyacrylonitrile (i.e. a fibre-forming homo- or co-polymer of acrylonitrile) comprises mixing a solution of polyacrylonitrile with a solid pigment composition comprising a solid synthetic polymer which is soluble to the extent of at least 5% by weight in dimethyl-formamide and at least 60% by weight of organic or inorganic pigment, the volume concentration of pigment in the composition under a uniform compressive pressure of 20 p.s.i. being less than 18% in the case of an organic or inorganic pigment and less than 13% when carbon black. Copolymers of acrylonitrile with vinyl toluene and/or styrene are preferred as the solid synthetic polymer. The solid pigment compositions are obtained by intimately mixing (a) a pigment paste obtained by electrolytic flocculation of an aqueous dispersion, and (b) a polymer paste similarly obtained from a latex, and treating the mixture to soften and then reharden the polymer. In Examples 1-3, pigment compositions are made comprising (1) chlorinated copper phthalocyanine and a styrene/acrylonitrile copolymer latex, (2) the same pigment and a vinyl toluene/acrylonitrile copolymer latex, (3) carbon black and the latex of (2); these solids are readily dispersible in solutions of polyacrylonitrile in dimethyl formamide.
Patent GB-993090-A (GB)
Title: Dispenser
IPC: B65H35/00
Filed: 1963-12-31
Abstract: 993,090. Tape dispensers. JOHNSON & JOHNSON. Dec. 31, 1963 [Dec. 31, 1962], No. 51358/63. Heading A4G. A tape dispenser comprises end portions 14 between the rear parts of which extends a container 15 having a hinged cover 16 held closed by dimples 18 and containing three spacers having rearwardy curved slots 23 for receiving a roll spindle 22 and a cover spindle retainer 24, the outer spacers being spaced from the end portions and ridges 25 preventing rolls from being inserted, and the central spacer being so positioned that rolls of different widths are accommodated between the spacers, while between the front parts of the end portions extends a cutter guide 11 in which moves a removable slide 29 carrying a holder 12 containing razor blades 27. The cutter moves from one end or the other for cutting either tape which adheres to guide surfaces 26, 27 and can be grasped via end cut-out 39. U.S.A. Specification 3,071,034 is referred to.
Patent GB-1404888-A (GB)
Title: Method of protecting building materials or buildings
IPC: C04B41/50
Filed: 1973-11-06
Abstract: 1404888 Waterproofing building materials E L DESHAYES 6 Nov 1973, [7 Nov 1972] 51551/73 Heading D1P [Also in Division C3] An aqueous solution for waterproofing building materials while still allowing them to "breath" comprises a siliconate, a bicarbonate and carbonic anhydrase. A preferred solution comprises 6-9% wt potassium methylsiliconate, 0.5-4% wt calcium bicarbonate, 0.01 to 0.75% wt carbonic anhydrase and optionally 0.8-5% wt sodium phenyl-siliconate. The pH of the solution is preferably 10-13.5. The solutions can be applied with a brush or by spraying. Building materials which may be treated include concrete, freestones, bricks, burrstones, parpens, tiles or conglomerates of asbestos and cement and calcareous stone.
Patent GB-1509167-A (GB)
Title: Cobalt-base sintered alloy
IPC: C22C1/04
Filed: 1976-12-10
Abstract: 1509167 Sintered Co based alloy MITSUBISHI KINZOKU KK 10 Dec 1976 [18 Dec 1975] 51748/76 Heading C7A A cobalt-based alloy, made by simultaneously reducing and sintering a mixture of oxides of the constituent metals with carbon powder, contains: Cr 15À0-35À0 W 3À0-19À0 Mi 0À2-12À0 Mo 0À1-15À0 Fe 0À05-5À0 Ti 0À05-2À0 Si 0À05-1À5 Mu 0À05-1À0 C 0À2-3À5 Co balance plus impurities. Boron may also be present in the range 0À05-1À0%, the facilitate diffusion between the particles during sintering. The mixed oxide powders together with the required carbon content are nulled to give a free powder of about 1À5Ám, which is reduced by heating in hydrogen at 1150‹C to give a spongelike mass which is crushed and compacted at 61/cm<SP>2</SP> prior to sintering at 1240‹C in a vacuum. The resultant sintered body has a high density and bind strength.
Patent GB-1544833-A (GB)
Title: Chromium electroplating
IPC: E21D23/00
Filed: 1975-12-18
Abstract: CHROMIUM ELECTROPLATING A tendency for grey discolouration at high current density in trivalent chromium plating solutions may be reduced by maintaining therein from 30 to 150 parts per million of iron or nickel.
Patent GB-1453449-A (GB)
Title: Manual/automatic process controller
IPC: G05B7/02
Filed: 1973-11-08
Abstract: 1453449 Automatic control systems HONEYWELL Inc 8 Nov 1973 [9 Nov 1972] 51817/73 Heading G3R In an automatic/manual process controller a control amplifier has respective feedback loops for automatic and manual control, and the manual control signal is produced by a generator whose output increases with time when a switch is operated; thus it is always at a low value at changeover. Signals corresponding to a process variable and a set point applied at 12, 14 are compared in differential amplifier 24, the resultant error signal being applied via auto/manual switch 53 to operational amplifier 52, with P.D.I. feedback provided by network 65. With switch 53 in the opposite position to that shown a manually switchable voltage from 49 is substituted for the error signal and integrating feedback capacitor 51 for the network 65. Capacitor 72 tracks the output in this mode and 51 in the auto. mode, to provide "bumpless" changeover in each case. The manual voltage is derived from a circuit Fig. 2 or 3, (not shown) in which an "increase" or "decrease" switch connects a fixed voltage of appropriate polarity to a capacitor (86) via a resistor (84) to thereby provide a steadily changing output voltage. The integrating action of capacitor 51 results in the rate of change of the voltage applied to amplifier  52 increasing with time. The capacitor in 49 is discharged immediately the switch is put to "neutral". An amplifier 44 and switch 154 is said to enable a direct or inverse function to be selected.
Patent GB-1028080-A (GB)
Title: Improvements in or relating to apparatus for coupling-out energy from a wide frequency band of high frequency energy
Inventor: MEINKE HANS
IPC: H01Q13/02
Filed: 1964-12-23
Abstract: 1,028,080. Diode detector arrangements; aerials; R.F. couplings; multiplex radio signalling. TELEFUNKEN PATENTVERWERTUNGSGESELLSCHAFT m.b.H. Dec. 23, 1964, No. 52306/64. Headings H3Q, H3T, H4A and H4L. A tapered waveguide is used to separate out narrow bands from a wide band of radio frequencies. Tha latter is fed to the larger end of the waveguide, the other end of which is closed in a non-reflecting manner; high impedance rectifiers 2 (Fig. 2, not shown) are located at spaced points along the waveguide, each of which only responds to a corresponding narrow band of frequencies. This follows, since for a given rectifier, only waves of wavelength slightly less than the cross-dimensions of the corresponding portion of the waveguide will be at high impedance and so match into the rectifier impedance; mismatch will occur with waves of appreciably shorter wavelength and those of greater wavelength will not be transmitted so far down the waveguide. The waveguide may be of rectangular cross-section, the ratio of the sides being constant; the rectifiers preferably comprise tunnel diodes operating at the upper reversal point of the characteristic. Slot couplings are preferably employed for coupling the diodes to the magnetic field; preferably they are coupled to the lateral currents in the waveguide by means of hole couplings in the centre of the sides. To couple out energy irrespective of the polarization of the waves pairs of diodes may be used, mounted on two mutually perpendicular waveguide sides and connected in series, the guide preferably being of square cross-section. A horn antenna in accordance with the invention (Fig. 4, not shown), may have a fast taper towards the large end and even be flared backwards.
Patent GB-1451906-A (GB)
Title: Steering gear controls for motor vehicles
IPC: B62D6/04
Filed: 1973-11-12
Abstract: 1451906 Controlling vehicles ROBERT BOSCH GmbH 12 Nov 1973 [13 Nov 1972] 52418/73 Heading B7H In a steering gear control for compensating for lateral deviations of a motor vehicle, caused by say cross wind forces, a monitoring device is incorporated by means of which the adjusting travel imposed on the vehicle steered wheels, whether in the same or opposite direction to that produced by the driver, is variable inversely upon vehicle velocity. As shown a steering controller 1 receives input signals 1<SP>1</SP> representative of say lateral acceleration in the front of the vehicle and two input signals of the differential gear 9. A signal 2<SP>1</SP> is relayed from the controller by way of a monitoring device 2 to which a measured variable 3 of the vehicle velocity is also fed. The device 2 permits a large amount of adjusting travel of the steering gear at a low vehicle velocity and only a small adjusting travel at a high vehicle velocity. A signal 6 is supplied to a servo motor 7, which may be electric or fluid pressure operated, and a reduction gear 8 connected to the servo 7 has its angular position measured and signalled by line 16<SP>1</SP> to the input of the servo 7 where it opposes the desired value signal 6. The difference between the rotation of steering wheel 10 stepped down by gear 11 and the movement of the servomotor stepped down by reduction gear 8 is transmitted to the steered wheels 12, 13 by means of a differential gear 9. The angular position measured at the output of reduction gear 8 is fed to a threshold valve switch 17 so that when a signal arriving by line 16<SP>1</SP> exceeds the threshold value predetermined by curves 14, 15 the servomotor 7 is isolated by a switch 18. A pilot lamp 19 indicates the fault.
Patent GB-1164862-A (GB)
Title: A Device comprising a Bush or Sleeve for Attaching Objects to a Base or Foundation of low Mechanical Strength
Inventor: ERIKSSON HENNING
IPC: F16B13/08
Filed: 1966-11-24
Abstract: 1,164,862. Bushes. H. ERIKSSON and F. ERIKSSON. 24 Nov., 1966, No. 52624/66. Heading F2H. A bush, e.g. of steel, has an inclined portion 4 for deflecting a nail 2 outwardly into the surrounding medium, and an inwardly inclined portion 12 for guiding the nail along the opposite sidewall. A flange or nut 15 secures an element 8.
Patent GB-1489398-A (GB)
Title: X-ray intensifying screen
IPC: G21K4/00
Filed: 1974-12-06
Abstract: 1489398 Luminescent compositions MINNESOTA MINING & MFG CO 6 Dec 1974 [7 Dec 1973] 52877/74 Headings C3P and C3R [Also in Divisions C4 and H5] An X-ray intensifying screen comprises a phosphor of formula [Gd (1-x) Tb x ] 2 O 2 S wherein x is 0À006 to 0À015, and a binder. Reduced purity Gd (e.g. 99À9%) may be used as an alternative to high purity Gd (99À99%). The binder may be polymethacrylate, polycarbonate, cellulose acetate, cellulose acetate butyrate, polyvinyl butyral, polyesters, and mixtures of one or more such polymers or copolymers to two or more precursor monomers.
Patent GB-1537501-A (GB)
Title: Compositions for forming hardened cement products and process for producing hardened cement products
IPC: C04B28/02
Filed: 1975-12-24
Abstract: 1537501 Cementitious composition MATSUSHITA ELECTRIC WORKS Ltd 24 Dec 1975 [28 Dec 1974 27 Feb 1975] 52900/75 Heading C3N [Also in Divisions C1 and D2] A composition comprises a cement, which liberates calcium hydroxide upon hydroxide, glass fibres, and at least one of (a) 0À25 to 1-0 mole active alumina per 3 moles of Ca(OH) 2  liberated (b) 0À5 to 2À0 moles aluminium hydroxide per 3 moles Ca(OH) 2  liberated (c) 0À2 to 1À2 moles amorphous silica per mole Ca(OH) 2  liberated and (d) 0À2 to 1À2 moles crystalline silica (mean particle size below 50 microns) per mole Ca(OH) 2  liberated. Compound which form Al(OH) 3  in the reaction system such as aluminium chloride may be used. The composition may contain a catalyst selected from alkali metal halides, alkaline earth metal halides, alkali metal carbonates, alkaline earth metal carbonates and water glass. The composition may also contain water content decreasing agents, air-entraining agents, deforming agents, foaming agents, expansive agents, adhesive additives, mineral powders, lightweight aggregates, waterproofing agents, pigments, mineral fibres, synthetic fibres, natural fibres, sand, gravel and synthetic resin. Setting and hardening can be at elevated temperature in a CO 2  containing atmosphere. Shaping may comprise a paper manufacturing method, casting, spray dehydration and compression moulding.
Patent GB-1401627-A (GB)
Title: Testing for telecommunications switching systems
IPC: H04M3/30
Filed: 1971-11-16
Abstract: 1401627 Automatic exchange systems POST OFFICE 16 Feb 1973 [16 Nov 1971] 53137/71 Heading H4K In a telecommunication switching system in which a plurality of communication paths, e.g. subscriber lines 2, are connected to a switching centre, MSU, Fig. 1 (not shown), via a TDM highway 13, the MSU controls a testing arrangement 6, 19, 15 which applies a test signal to a selected path. In the embodiment of Fig. 2 each subscriber line has its own signalling unit (SU) 6 included in a concentrator 3. The SU is a transistor logic circuit, Fig. 5 (not shown), capable of applying, in response to the control signals, various test voltage conditions to the two wires of the subscriber line. Test results are transmitted to the MSU along the TDM highway. In particular the SU tests the line capacitance and is able by investigating decay characteristics to distinguish between a low insulation fault and a battery or earth contact fault. In a further embodiment, Fig. 3 (not shown), one SU is provided for each channel of the TDM highway and is connected to a selected subscriber line through an analogue switch. The SU may be arranged, on receiving suitable control signals, to ring a subscriber's bell, or to open the coin-slots on a coin-box line.
Patent GB-1286182-A (GB)
Title: Improvements in or relating to the determination of trace amounts of gases
Inventor: FONTIJN ARTHUR
IPC: G01N27/62
Filed: 1970-11-10
Abstract: 1286182 Detecting gases electrically AEROCHEM RESEARCH LABORATORIES Inc 10 Nov 1970 53472/70 Heading G1N Trace amounts of a volatile substance such as oxides of carbon, nitrogen or sulphur or oxygen alone are detected by forming chemi-ions of the substance by chemical reaction with a further gaseous component and measuring the electrical current produced by the chemi-ions. The volatile substance and/or further gaseous component are activated to a more reactive form prior to mixing by electrical discharge, thermal or photochemical methods. In a first example nitric oxide is detected using the apparatus shown. Helium gas is flowed through chromatograph column 2 at the same time as helium ballast gas flows through tube 30 into reference arm 22 and a mixture of nitrogen and helium is passed into discharge tube 10. Micro-wave cavity 12 is then energized to breakdown the gaseous nitrogen molecules into activated nitrogen atoms and a sample of gas containing the nitric oxide is injected into port 8 and permitted to flow through column 2. The nitric oxide is dissociated in cavity 12 to form nitrogen and oxygen atoms which form excited nitric oxide molecules in N-O atomrecombination reactions. The activated nitric oxide and nitrogen molecules and nitrogen atoms react in sampling tube 16 to produce chemi-ions. The area under the peak of the output from electrometer 36 is measured to give a measurement of the concentration of nitric oxide. Absolute values are obtained by comparison with a known sample. In a second example the volatile substance being measured is not activated. Nitrogen atoms formed in the cavity 12 react with the inactivated nitric oxide in the sample stream to produce oxygen which again forms ions. In a third example a sample of Caesium vapour is reacted directly with a stream of activated nitrogen gas to form caesium ions. Alternatively lead, barium and sodium atoms may be reacted with the nitrogen gas. Carbon dioxide may be detected by passing it through the chromatographic column and then through an activator the products being reacted with acetylene to form chemi-ions.
Patent GB-1240494-A (GB)
Title: Improvements in and relating to cranks with variable eccentricity
IPC: F16H19/04
Filed: 1968-11-13
Abstract: 1,240,494. Variable throw cranks. NORDISK VENTILATOR CO. A.S. 13 Nov., 1968 [14 Nov., 1967], No. 53951/68. Heading F2K. The arm of a variable throw crank comprises two relatively displaceable parts 1, 2, each carrying either the crank shaft 3 or the crankpin 4 (which may comprise a boss having a tapped hole), one of the parts 1 being provided with a shaft 7 integral with a gear-wheel 5 which engages two parallel facing toothed racks 9, 10 in the other part 2, one of the racks 9 being wider than the other 10 in the axial direction of the gear-wheel, which is displaceable in its axial direction against the action of a spring 12 into a position in which it engages only the wider rack 9. As shown, a screwdriver may be inserted in the hollow shaft 3 integral with the part 1, to engage a slot 8 in the shaft 7 to displace the wheel 5 upwards relative to the shaft 3, a pin 13 and the racks to beyond the rack 10, where rotation of the screwdriver will rotate the wheel 5 to move the rack 9 and therefore the part 2 and the pin 4 relative thereto.
Patent GB-1394572-A (GB)
Title: Facsimile scanning apparatus
IPC: H04N1/028
Filed: 1971-11-22
Abstract: 1394572 Facsimile DEFENCE SECRETARY OF STATE FOR 21 Feb 1973 [22 Nov 1971] 54100/71 Heading H4F In a facsimile transmitter, utilizing a rotating master copy drum 1 and a parallel-axial line scanning arrangement using no moving parts, the parallel-axial line across the master copy is divided into a plurality (e.g. 32) of contiguous areas and each area is in turn divided up into a further plurality (e.g. 32) of contiguous sub areas. In one embodiment each area is illuminated by a respective light source 4, 5 ... 6 and each sub area is viewed by one end of a respective light guide, said light guides being arranged in bundles 10, 11 ... 12 (e.g. 32 bundles of 32 light guides). The light guide viewing the first sub area (e.g. left most) in each area is fed to a first common detector (e.g. 16) and the light guide viewing the nth sub area in each area is fed to the nth common detector. In the given example of 32 areas, sub areas and detectors, each detector 14-16 is sequentially enabled, e.g. by a 5-stage binary counter 18 and each area is illuminated in sequence for the scanning period of the detectors, e.g. by a 5-stage binary counter 19 fed with the last stage of counter 18. The 1024 sub areas are thus sequentially scanned by the detectors according to the following table: In a second embodiment, each detector 14-16 is replaced by a light source and each light source 4-6 is replaced by a detector. The light guides then carry light to illuminate the master copy.
Patent GB-1110986-A (GB)
Title: Amplifier circuit and recording and reproducing device incorporating the amplifier circuit
IPC: H03G7/06
Filed: 1966-12-07
Abstract: 1,110,986. Gain control. INTERNATIONAL BUSINESS MACHINES CORPORATION. 7 Dec., 1966 [30 Dec., 19651, No. 54786/66. Heading H4R. An electro-luminescent device arranged to luminesce at a predetermined threshold value is connected to the output of an amplifier and a photo-electric device is arranged to receive light from the luminescent device and by its incorporation in the amplifier circuit to effect compression of the signal. In the dictation machine described the output from a threestage transistor amplifier is, during recording, applied to an electro-luminescent device which is coupled to control photo-conductors providing negative feed-back in two of the stages, and is extended outside of a light-tight housing to give an indication when the threshold is exceeded. More than one photo-conductor circuit may be provided for each stage. They may deal differently by reason of their time constants with different frequency ranges or they may be selectable to deal with either speech or music.