baber/WOPTO huggingface dataset:
Patent GB-1492204-A (GB)
Title: Resin composition containing copolyphenylen ether
IPC: C08L33/02
Filed: 1975-10-16
Abstract: 1492204 Polyphenylene ether compositions MITSUBISHI GAS CHEMICAL CO Inc 16 Oct 1975 [18 Oct 1974] 42471/75 Headings C3R and C3P A thermoplastic composition comprises a blend of (1) 5 to 95% by weight of a copolymer having (i) 50 to 98 mole per cent of units and (ii) 50 to 2 mole per cent of units  R<SP>1</SP>, R<SP>2</SP>, R<SP>3</SP>, R<SP>4</SP> and R<SP>5</SP> being methyl or ethyl groups, and (2) 95 to 5% by weight of a styrene resin having at least 50% of structural units of formula where R<SP>6</SP> is hydrogen or methyl or ethyl, X is chlorine or bromine and m is 0, 1 or 2. In examples copolymers prepared by oxidative polymerization of mixtures of 2,6-dimethylphenol with 2,3,6-trimethylphenol and a mixture of 2,6-dimethylphenol with 2,3-dimethyl-6- ethylphenol, are blended with rubber modified polystyrene, a mixture of styrene/butadiene block copolymer with polystyrene, a styrene/ butadiene block copolymer, a mixture of polyisoprene with polystyrene, a mixture of an ethylene/propylene/5-ethylidene-norbornene copolymer with a styrene/ethylene/butylene copolymer, and a mixture of an acrylic rubber with a styrene/butadiene block copolymer and polystyrene; other ingredients are triphenyl phosphate, titanium oxide and a heat stabilizer.
Patent GB-956695-A (GB)
Title: A process of machining a toothed wheel, e.g. a gear wheel
IPC: B23F19/06
Filed: 1961-11-29
Abstract: 956,695. Gear-finishing. F. HURTH, and H. HURTH. Nov. 29, 1961 [April 6, 1961], No. 42632/61. Heading B3K. A gear shaving machine comprises means for rotating the tool 11 and relatively traversing the tool 11 and gear 17 in a preselectable ratio to control the points at which a particular tooth of the gear is machined in successive cutting positions. The tool is rotated through changespeed gearing by a reversible electric motor The drive is conveyed to a spindle 22 rotating the tool through gears 25, 39, 39 and a feed screw 36 through reversing gears 26, 27, a clutch 32, and change gears 33, 34. The feec nut 37 carries a projection to operate mechani cal, electrical or hydraulic switches 41 to reverse the feed. The tool rotation is reversed with the feed. The cutting edges may lie on a helix.
Patent GB-1068346-A (GB)
Title: Improvements in or relating to frequency comparison devices
Inventor: GOSLIN GEOFFREY WALTER
IPC: H03K5/26
Filed: 1962-11-12
Abstract: 1,068,346. Frequency comparators. DE HAVILLAND AIRCRAFT CO. Ltd. Nov. 12, 1963 [Nov. 12, 1962], No. 42657/62. Heading H3A. [Also in Division G3] A frequency comparator, e.g. for use in controlling the speed of a gasturbine comprises means for deriving a number of relatively phase-displaced pulse trains having a frequenoy proportional to the speed of the turbine, means for deriving a square-wave pulse train having a frequency proportional to a desired speed and means for comparing the two frequencies to derive a difference signal for adjusting the turbine speed. A tachometer generator/coupled to the turbine develops three pulse trains on lines A, D and G, which are applied, respectively, to one input of AND gates 11 and 12, 21 and 22, and 31 and 32; these pulse trains have a frequency proportional to the speed of the turbine and are relatively phase displaced by 120 degrees. A voltage controlled oscillator 3, controlled by a speed demand voltage, develops a square-wave pulse train having a frequency proportional to the required speed and this train is applied directly to the other inputs of gates 11, 21 and 31 and after inversion in unit 3A to the other inputs to gates 12, 22 and 32. The outputs of AND gates 11 and 12 respectively control the switching of a bi-stable circuit 13 to each of its stable conditions, similarly the outputs of gates 21 and 22 oontrol bi-stable circuit 23 and bi-stable circuit 33 is controlled by the outputs from gates 31 and 32. In one stable condition each of the bi-stable circuits closes an associated switch 14, 24, 34 via which windings 15, 25 and 35 of a stepping motor 6 are connected to a D.C. supply. The motor controls the supply of fuel to the turbine, to control its speed, via a throttle shaft. When the frequency proportion to the actual speed and that proportional to the required speed are equal the bi-stable circuits remain in one or another of their stable states and the motor 6 does not rotate, if, however, these frequencies differ the bi-stable circuits operate the switches 14, 24 and 34 in sequence whereby a rotating field is applied to the motor. The direction of rotation of the field and hence the motor depends on whether the actual speed of the turbine is above or below the required speed and the rate at which the stepping motor is turned is a function of the magnitude of the difference.
Patent GB-1448577-A (GB)
Title: Foil-screen devices
IPC: B04B3/00
Filed: 1973-09-11
Abstract: 1448577 Screening apparatus D G NELSON 11 Sept 1973 [27 Sept 1972] 42693/73 Headings B1D, BIT and B2H A screening apparatus for treating liquid or gaseous suspensions (e.g. paper pulp) comprises at least one hollow foil 1 mounted on rotatable shaft 4 and having a trailing surface T, which has one or more openings, whereby during operation the foil(s) rotate(s) and solids rejected by fixed screen 5 are passed through the foil(s) to compartment R. The accepted material is discharged through outlet 8. The foil(s) may comprise a curved leading surface L and a generally V-shaped trailing surface T. The foil(s) may have scoop(s) S tangentially arranged with respect to the opening(s). The foil(s) may have one slot extending along the whole length thereof or a plurality of staggered openings. The foil(s) may comprise a tube welded on a V-shaped section. The disc 2 (Fig. 1) may be provided with notches (not shown) for removal of rejected material not removed by the foils.
Patent GB-1284239-A (GB)
Title: Brake system
IPC: B60T8/17
Filed: 1970-09-08
Abstract: 1284239 Antiskid brake systems NORTH AMERICAN ROCKWELL CORP 8 Sept 1970 [9 Dec 1969] 42904/70 Heading F2F A failure detection system, for an antiskid braking system of the kind including a comparator which compares the rotational velocity of at least one vehicle wheel with that of another wheel and produces a control signal effective to modulate braking effect when the difference between the velocities exceeds a predetermined quantity, comprises a simulator which periodically applies to the system a simulated condition which should produce a control signal and means for automatically de-activating the system if no such control signal is produced. The source of the simulated signal which represents high wheel speed is an oscillator. A further protection against malfunction is provided by a circuit which momentarily actuates all of the solenoids of the valves in the brake circuit each time the vehicle is started. The control circuit arrangement is also such that the front brakes are released if the front wheel speed is less than 5 m.p.h. As described the system is applied a tractor trailer air brake arrangement having an operator controlled valve 36 and valves 66, 68, 72, 74, 76 operated by logic circuits 80.
Patent GB-1181198-A (GB)
Title: Improvements in or relating to Semiconductor Components
IPC: H01L23/488
Filed: 1968-09-11
Abstract: 1,181,198. Semi-conductor devices. ROBERT BOSCH G.m.b.H. 11 Sept., 1968 [12 Sept., 1967], No. 43177/68. Heading H1K. [Also in Division C7] A semi-conductor body containing a component such as a transistor or an integrated circuit is soft-soldered to a metal base 1 and electrical contact is made to the top surface of the body by means of wires 10, each of which comprises a coil section 11 slipped over and soldered to a terminal post 3, a centre section 12 perpendicular to the axis of the coil section 11 and an end section 13 parallel to the coil axis and soldered to the semi-conductor body. The coil section 11 may extend above the level of the centre portion 12 instead of below it as shown. A solder ring 15 of Sn/Ag with or without minor additions of Sb or Bi, or of Pb/Sn/Ag, may be slipped over the terminal post 3 after the coil section 11 of the wire 10, which may be mainly of Ag, has been put in place. The solder between the semi-conductor body and the base 1 and between the end portion 13 of the wire 10 and the semi-conductor body may be a Pb/Sn solder having a higher melting point than the solder comprising the ring 15. A housing may be applied to the base 1.
Patent GB-1393323-A (GB)
Title: Multifrequency receivers
IPC: H04L27/26
Filed: 1973-09-13
Abstract: 1393323 Selective signalling INTERNATIONAL BUSINESS MACHINES CORP 13 Sept 1973 [25 Oct 1972] 43177/73 Addition to 1318499 Heading G4H [Also in Division H4] A receiver for decoding multifrequency signals of which each component frequency is taken from a different predetermined group of frequencies has a different channel for each group of frequencies, each channel including a majority circuit arranged to generate a binary signal representative of the amplitude of a majority of a predetermined number of samples of the frequency signal in the channel, and means for determining the rate of zero crossings of a sequence of the binary signals to determine the frequency of the signal in the channel, each channel including a resetting device which resets the frequency detector associated with the channel whenever the time interval between two consecutive zero-crossings detected by the channel lies outside predetermined limits. The input is passed via an AGC circuit, the gain control of which is responsive to the AGC circuit output fed back via a peak detector followed by an integrator with fast rise time and slow fall time, the use of the peak detector discriminating against speech as distinct from the multifrequency signals which are dialling signals. The AGC circuit output is passed via an A/D converter to a digital transversal filter which is time-multiplexed with the factors required for obtaining the different group of frequencies. The filter output goes to the channels mentioned. Each channel consists of a majority circuit followed by a frequency detector. The majority circuit consists of a peak clipper, a sampler and a shift register in series, the shift register stages being connected in parallel to a summer the output of which is compared with a reference value to obtain the binary signal. The majority circuit thus eliminates noise. The frequency detector counts clock pulses for 16 periods of the binary signal (which is a square wave), the count being decoded to identify the component frequency. The decoder outputs from the channels are combined in a final decoder. Confirmation logic responsive to the channel decoders checks the presence of component frequencies according to simultaneous presence or order or appearance criteria, as appropriate. The resetting device in each channel measures the time between successive transitions in the square-wave binary signal by having the positive-going transistions set a first latch and reset a second latch, and having the negative-going transitions reset the first latch and set the second. While either is set a counter counts clock pulses. Each transition causes resetting of the frequency detector if the count is currently outside limits, and resets the counter.
Patent GB-1485054-A (GB)
Title: Electronic air cleaning collector cell assembly
IPC: B03C3/45
Filed: 1974-11-12
Abstract: 1485054 Electrostatic precipitators CHEMTOOL Inc 12 Nov 1974 43424/75 Divided out of 1485053 Heading B2J In an electrostatic precipitator, the collector electrodes such as 13, 14 are provided with circular clearance holes 33 and rectangular mounting holes 34. The latter cooperate with slots formed in spacing rods or tubes 15, whereby electrodes of one polarity are interconnected by rods which pass through the clearance holes in the interleaved electrodes of the other polarity. The side walls (25) Fig. 3 (not shown) of the precipitator are provided with holes matching the location of the spacing rods, the rods of different polarity being secured to the walls respectively directly and by way of an insulating bush (26). The side walls are in physical contact with the electrodes adjacent thereto and are so shaped as to define therewith a chamber which shields the insulating bush from the flow of air passing through the precipitator. The electrodes are formed with a plurality of offset bends to lend them rigidity (Fig. 4a, not shown).
Patent GB-1357095-A (GB)
Title: Counter
IPC: G06M1/274
Filed: 1970-09-11
Abstract: 1357095 Selective signalling UNITED GAS INDUSTRIES Ltd 2 Sept 1971 [11 Sept 1970] 43528/70 Heading G4H A counter, e.g. in a gas meter, has a plurality of drums bearing decimal numbers about their peripheries and rotatable about a common axis, so that the numbers are displayed, means associated with each drum for setting up a binarycoded representation of the number displayed, and means for reading the binary-coded representation without physically contacting it. The drums, as disclosed, are counter wheels bearing the digits 0-9, a typical counter wheel having 20 teeth on one side and 2 teeth on the other, meshing with pinions whereby each wheel (except the first) is driven mechanically from the preceding wheel with a 10 : 1 stepdown. Rigid with each wheel are four metal discs with tongues and gaps in their circumferences coded to give a binary-coded representation of the decimal number displayed by the wheel. The tongues and gaps are sensed by the changes they produce in the inductances of magnetic circuits. Output is serial by bit. The tongues and gaps may be sensed capacitatively, or may be replaced by magnets sensed by reed switches.
Patent GB-1405786-A (GB)
Title: Adhesive composition
IPC: C09J153/02
Filed: 1972-09-20
Abstract: 1405786 Block copolymer adhesive composition SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ BV 20 Sept 1972 [22 Sept 1971] 43570/72 Heading C3P An adhesive composition comprises (a) 100 parts of a block copolymer having at least two polymer blocks A and at least one polymer block B, each A block being a non-elastomeric polymer of a mono-alkenyl aromatic hydrocarbon having a molecular weight of 2000 to 125,000 and having not more than 25% of the original aromatic double bonds hydrogenated, and B is an elastomeric block of a conjugated diene polymer of molecular weight from 10,000 to 250,000 and having at least 75% of the aliphatic double bonds hydrogenated or a polymer derived from alpha mono-olefin(s); (b) 25 to 300 parts of a tackifying resin which is compatible with the B block, and incompatible with the A blocks; (c) 10 to 200 parts of an aromatic resin having a softening point above 100‹ C. and which is compatible with the A blocks, and (d) 0 to 200 parts of an extending oil which is compatible with the B block. Pressuresensitive, contact and hot-melt adhesives may be prepared, the latter including a wax, e.g. a paraffin wax/microcrystalline wax mixture. Specific components include (a) styrene-b- (hydrogenated) butadiene or isoprene-b-styrene and alphamethylstyrene-b- (hydrogenated) butadiene or isoprene-b-alphamethylstyrene, (b) pentadiene-1,3 and 2-methyl-2-butene copolymer, polyhydric esters of rosin or hydrogenated rosin, alpha- and beta-pinene resins, olefinic resins and synthetic polyterpenes, (c) coumarone - indene resins, vinyl toluene - alphamethylstyrene copolymers, alphamethylstyrene homopolymers, polyindenes and polystyrenes, and (d) petroleum oils, oligomeric polypropylenes or hydrogenated polybutadiene, and vegetable and animal oils.
Patent GB-904545-A (GB)
Title: A process for the production of symmetrical dialkyl hydrazines
Filed: 1960-12-20
Abstract: Symmetrical dialkyl hydrazines are prepared by reacting chlorine, in a gaseous reaction, with a ketone or aldehyde and excess (calculated on the chlorine) of a monoalkylamine which has a boiling point between that of monomethylamine and benzylamine to from a diaziridine, separating the diaziridine from the reactants and treating it with an aqueous mineral acid.  The alkyl ammonium chloride formed as a by-product may be transformed with aqueous caustic alkali solution into an alkali metal chloride and free alkylamine prior to separation of the diaziridine.  Specified ketone reactants are acetone, methylethyl ketone, diethyl ketone, methylisopropyl ketone, methylpropyl ketone, ethylpropylketone, methylbutyl ketone, cyclohexanone.  Specified aldehyde reactants are acetaldehyde, propionaldehyde, butyraldehyde and benzaldehyde. Specified amine reactants are C1-4 monoalkylamines.
Patent GB-1170643-A (GB)
Title: Improved Herbicidal Compositions
Inventor: MARRS GORDON JAMES
IPC: C23F11/167
Filed: 1967-09-27
Abstract: 1,170,643. Composition comprising a bipyridylium diquaternary salt and a phosphorus acid derivative. IMPERIAL CHEMICAL INDUSTRIES Ltd. 4 Sept., 1968 [27 Sept., 1967], No. 43928/67. Heading A5E. A herbicidal composition comprises a herbicidal bipyridylium diquaternary salt and a phosphorus acid derivative of the general formula wherein R 1  is a C 1 -C 18  alkyl group, R 2  is a C 1 -C 4  alkyl group or C 1 -C 18  alkoxy group and M<SP>+</SP> is a cation. The phosphorus acid derivative inhibits the corrosion of metals coming into contact with the bipyridylium salt.
Patent GB-1129698-A (GB)
Title: Separation of the core of a uranium fuel element from its envelope
IPC: G21C19/38
Filed: 1967-09-28
Abstract: 1,129,698. Separating the cores and envelopes of uranium fuel elements. S. RAVIV, E. RABINOVTZ and S. MALKIELY. Sept.28, 1967, No.44103/67. Heading C7B. The core of a uranium fuel element is separted from its envelope by inserting the element into a nitric acid bath having a concentration of 7 - 12N, the uranium core forming the cathode in an electrolytic circuit, through which current is allowed to flow until the core is sufficiently loosened from the envelope (electro-dissolution of the uranium taking place at the contact surface of the two metals) and extracting the core from the envelope.
Patent GB-917988-A (GB)
Title: Method and means for determining the level of a liquid in a container
IPC: G01F23/292
Filed: 1960-12-23
Abstract: 917,988. Determination of liquid levels by infra-red detectors. HAIM, G. (Smith, M. F.). Nov. 27, 1961 [Dec. 23, 1960], No. 44231/60. Class 40 (3). The level of liquid in a container is determined by measuring the infra-red radiation emitted from vertical points on the outer surface of the container by means of an infra-red radiation detector remote from the container and recording the point at which the radiation emitted by the container appears to change. In the embodiment shown, three tanks 5, 12, 18 of a total of twenty each having a vertical line of black paint interrupted by reflecting horizontal aluminium strips, are monitored by one infra-red radiation pyrometer head 21 secured to a gimbal mount table rotatable by an azimuth servomotor 23 through worm-gear 24. Vertical movement of the head 21 is effected by an elevation servomotor 25 acting through a pinion and toothed gear 26. The motors 23, 25 are controlled by programme devices 28, 27, respectively, in connection with a timer 29. The head is further connected to a chart recorder 30. Under the control of the timer 29 and the programme device 28 the head 21 is positioned so as to monitor a particular tank (as shown, tank 12). In this position and under the control of the programme device 27 the head scans the vertical black line producing a graph at the recorder which shows a change in infra-red emission from the black line corresponding to the level of the liquid. Blips on the graph produced by the positions where the reflecting lines intersect the black line indicate the point on the tank where the emissivity changes. A closed circuit television arrangement may be used as a sighting device for adjusting the position of the detector.
Patent GB-1131819-A (GB)
Title: Improvements in or relating to driving mechanisms particularly for motor-driven address printing machines
IPC: B41L45/00
Filed: 1966-10-04
Abstract: 1,131,819. Printing machines; drive arrangements. CITOGRAF A.B. 4 Oct., 1966 [8 Oct., 1965], No. 44355/66. Heading B6C. In an addressing machine in which the printing arm is driven by a connecting rod 16 rotatably mounted on a crank disc 18 eccentrically secured to the output shaft 17 of a driving mechanism, disengagement of an electromagnetically operated clutch 11, through which the motor drive of the machine to the shaft 17 is transmitted, always precedes the stopping of the machine by a friction plate type brake 20, 21. The machine is belt driven from a motor through a pulley 10. The output member of the clutch 11, the input number of which is fast with the pulley 10, is fixedly secured to a shaft 13 which carries a pin 23 engaged in a slot 22 formed in the central section 19 of a member mounted on the shaft. The member also comprises a pinion 14 engaging the first of three gear-wheels 26, 31 and 32 which transmit the machine drive to the shaft 17, and a movable brake pad 20 which is engageable with a pad 21 fixed to the machine drive frame 30 and through which the shaft 13 passes. A torsion spring 24 which surrounds the shaft 13, is fixed adjustably at one end to the shaft through a collar 25 and at the other end to the pinion 24. In a non-drive position of the machine drive arrangements the spring 24 rotatably and axially urges the pad 20 into contact with the pad 21. In operation the clutch 11 is energized and the drive to the pulley 10 effects rotation of the pin 23 which moves along the slot 22 thereby tensioning the spring 24 as it withdraws the pad 20 from the pad 21. On engagement of the pin 23 with the slot end the pinion 14 is caused to transmit rotational energy to the gear train 26, 31 and 32 thus driving the printing machine. When the drive is discontinued through de-activation of the clutch 11 the spring 24 acts to rotate the pinion 14 in the opposite direction to thus apply the brake 20, 21.
Patent GB-1160391-A (GB)
Title: Improvements in and relating to Marine Refrigeration.
Inventor: ROBERTS EDMUND GODFREY RUSSELL
IPC: F25D17/00
Filed: 1966-10-05
Abstract: 1,160,391. Refrigerating. J. & E. HALL Ltd., and SHIPOWNERS REFRIGERATED CARGO RESEARCH ASSOCIATION. 4 Oct., 1967 [5 Oct., 1966], No. 44427/66. Heading F4H. The interiors of bulk cargo containers in a ship's hold are refrigerated while the ambient air in the hold is heated or cooled. As illustrated, cargo containers 7 are supplied with cooled air from a refrigerating unit RP through ducts (not shown). Air is withdrawn from the hold by fans 11, 11<SP>1</SP> through perforated ducts 12, 12<SP>1</SP> and is returned to the hold after passage through heat exchangers 14, 14<SP>1</SP> which are fed with heated or cooled brine. The fans may be subject to control in response to temperatures sensed at 13 and 13<SP>1</SP>.
Patent GB-1073407-A (GB)
Title: Butterfly valves
IPC: F16K1/228
Filed: 1965-10-21
Abstract: 1,073,407. Valves. M. C. E. HENRION. Oct. 21, 1965 [Nov. 24, 1964], No. 44627/65. Heading F2V. A butterfly valve 1 is provided with a seating formed by two ferrules 8 having oppositely facing concave surfaces and welded at their edges a, b to form a chamber 4 which is connected by a pipe 6 to a jack whereby oil is pumped into the chamber when the valve is closed to provide a seal with the valve. The ferrules are retained in a recess of the housing by a circlip 10 and a seal 9 is provided between the outer ferrule and the valve housing.
Patent GB-1056590-A (GB)
Title: Bottle cleaning agents
IPC: C11D1/72
Filed: 1965-10-22
Abstract: Bottle cleaning agents comprising from 50-95% of fine grained caustic alkali with a grain size less than 3 mm. diameter, and reaction products of propylene oxide with aliphatic amines having at least 3 hydrogen atoms in the molecule.  The aliphatic amines may also contain hydroxyl groups.  Other optional additives include phosphates, sodium silicate and sodium sulphate.