baber/WOPTO huggingface dataset:
Patent GB-1374117-A (GB)
Title: Rotary positive displacement fluid device
IPC: F01C1/344
Filed: 1971-12-03
Abstract: 1374117 Rotary positive-displacement machines A R THOMAS 3 Dec 1971 [4 Dec 1970] 56344/71 Heading F1F In a sliding-vane pump the vanes 48 .. 51 are inter-connected diametrally and partially supported by rods 52, 54 carrying compression springs 58, each rod being fixed to one vane and sliding in the opposite vane. One pair of rods may either straddle the other rods (as shown) or alternate with the other rods, Fig. 5 (not shown). The rotor comprises segments 46 of a hollow cylinder fixed to part annular flanges 44 on mutually parallel discs with shafts 32, 34. The housing may have cooling fins 26. In an I.C. engine having two units, or "portions", (84, 82), Figs. 6 to 10 (not shown), for compression and combustion-andexpansion, respectively, each portion has a rotor and inter-connected vanes similar to those of the pump shown. The rods of the portion (82) are thicker, and thus stronger, than those of the other portion. Fuel igniters e.g. spark plugs, (142) are disposed in the rotor of the portion (82) between the vanes. In the portion (82) the inlet and exhaust ports (130, 132) can be shut by the vanes so as to prevent leakage therethrough from one intervane space to another.
Patent GB-1173326-A (GB)
Title: A Correlator System
IPC: G06G7/19
Filed: 1966-12-16
Abstract: 1,173,326. Correlator systems. 
STAV PRO VYZKUM MOTOROVYCH VOZIDEL. Dec. 16, 1966 [Dec. 18, 1965], No.56371/66. Heading G1U. In a correlator system which does not require a memory unit, one input, to be correlated with a second, is connected to the common input 1 of a first set of band pass filters 3, each having a different pass band. The second input is connected to the common input 2 of a second set of similar filters 4. The filter outputs are connected to phase shifters 5 and 6 which are used to adjust in turn the outputs from corresponding filters in the two sets to be either in phase or in quardrature relative to one another. The outputs from the phase shifters are applied to an analogue multiplier 9 in which signals relating to corresponding frequency bands are sequentially multiplied together, the multiplier output being connected to an indicator 11 which provides a mean value for each sequential operation. A correlation function Rxy (#) for any required value of the delay # between the two input signals may then be determined from the equation:- where M 1n , M 2n  are the mean value product derived at 11 from the in or anti-phase and quadrature signals respectively for each frequency band, # hn , # dn  are the upper and lower frequencies for each frequency band, and N is the total number of filters in each of the circuits 3 and 4. This equation is stated without proof in the Specification.
Patent GB-1431349-A (GB)
Title: Electric cables pipe-bundle cables and other cord-like material
IPC: H01B7/04
Filed: 1973-12-05
Abstract: 1431349 Pipe bundle KABELUND METALLWERKE GUTEHOFFNUNGSHUTTE AG 5 Dec 1973 [8 Dec 1972 3 Feb 1973] 56423/73 Heading F2P [Also in Divisions H1 and D1] An electric cable, pipe bundle cable, or other cord-like material comprises a braid 23, 27 composed of high tensile filaments running in the axial direction and transversely or obliquely thereto, at least the axial filaments being elastically extensible to at least an elongation of 8 to 15%, wherein the braid is situated under a layer of thermoplastic material. Thus, as shown, the board may be located between two layers 25, 26 of thermoplastic or elastomeric sheathing material and/or around, within, or under the insulation 24 of the individual cores 22. The braid may be composed of steel or nylon filaments or a combination of these. Each filament may comprise metal or synthetic resin components stranded or knitted together and the individual components may be corrugated to increase extensibility
Patent GB-1155898-A (GB)
Title: Reinforcing Rod Spacer
Inventor: OTT WALTER
IPC: E04C5/20
Filed: 1967-12-13
Abstract: 1,155,898. Spacers for concrete reinforcements. W. OTT and E. J. BIGGLESTONE. .13 Dec., 1967 [15 March, 1967], No. 56608/67. Heading E1W. A synthetic plastic spacer for accommodating concrete reinforcing rods of different diameters has a saddle defined by a pair of outwardly flared arms 16 having a pair of inwardly-directed nose members 19 and a pair of inwardly-directed fingers 18, the clearance between the members 18 being less than that between the members 19. The base of the spacer consists of a pair of legs 9 interconnected by a web 7 having reinforcing shoulders 10.
Patent GB-1418675-A (GB)
Title: Distributed impedance transmission lines
IPC: H01P3/08
Filed: 1972-12-08
Abstract: 1418675 Microstrip lines RCA CORPORATION 8 Dec 1972 [9 Dec 1971 (2)] 56652/72 Heading H1W A microwave transmission line comprises two parallel conductive strips arranged on either side of a dielectric medium with non-corresponding longitudinal edges adjacent each other. Thus, as shown in Fig. 6, the line consists of a metallic strip 55 arranged on one side of a dielectric substrate 53 and a second, segmented, strip 61, 63, 65, 67 arranged on the other side. The edge 87 of strip 55 is adjacent the edges 79, 81, 83, 85 of the segments forming the second strip. In the modification of Fig. 8, strips 131, 133 are mounted on spaced substrates 135, 137. The characteristic impedance of the line does not depend upon the thickness of the dielectric between the strips but upon the degree of overlap or underlap of the adjacent edges. Fig. 6 illustrates methods of coupling the line to an ordinary microstrip line 76, to a slotline 72 and to a co-planar line 82. In the latter case, a conductive bridge 82A ensures that segments 63, 67, spaced from either edge of strip 65, are at the same potential. The various lines may form short-circuited or open-circuited stubs affording reactances of either sign in shunt or in series with the main line 55, 61, 63, 65, 67 (see Fig. 7, not shown).
Patent GB-1191049-A (GB)
Title: Improvements in or relating to Polarized Electromagnetic Relays
IPC: H01H51/28
Filed: 1968-12-03
Abstract: 1,191,049. Electromagnetic relays. SIEMENS A.G. 3 Dec., 1968 [4 Dec., 1967], No. 57303/68. Heading H1N. A polarized electromagnetic relay has its armature 1 " free from support " and rotatable about its centre of gravity with each of its ends 1a, 1b between a pair of fixed magnetic contacts which are polarized by permanent magnets 6, 7. The pairs 2, 3, and 4, 5 of fixed contacts are convergent and the magnets are arranged so that the bridging armature is held in engagement with either contacts 2, 5 or 3, 4 and is moved between these stable positions on appropriate energization of a coil 8 surrounding a protective tube 9. Additional permanent magnets, not shown, may bias the armature to one stable position.
Patent GB-1248940-A (GB)
Title: Process for making dense silicon carbide abrasive grain
IPC: C01B31/36
Filed: 1968-12-03
Abstract: 1,248,940. Dense silicon carbide grains. CARBORUNDUM CO. 3 Dec., 1968 [5 Dec., 1967], No. 57323/68. Heading CIA. Dense silicon carbide abrasive grain is produced by forming grains of the desired size and shape from a formable mix comprising finely divided silicon carbide, carbon and a temporary binder, feeding these grains and silicon at a controlled rate into a reaction zone which has a non-oxidizing atmosphere at a temperature between 1800‹ C. and the decomposition temperature of silicon carbide, continuously moving the grains, in the presence of silicon, through the reaction zone and cooling and collecting the silicon carbide abrasive grains produced. The non-oxidizing gas may be argon. The source of silicon carbide is preferably finely divided silicon carbide formed by crushing silicon carbide ingots. Some of the carbon may be provided by the temporary binder which carbonizes on heating. Specified contents of the mix are 3-30% by dry weight of carbon and 67-94% by dry weight of silicon carbide. Specified temporary binders are starch and water-soluble methyl celluloses, which may be used with water, and synthetic resins which may be used with an organic solvent. The binder may be present as 3-5% of the mix by dry weight. The silicon is preferably fed directly into the reaction zone through an opening provided for that purpose.
Patent GB-1282567-A (GB)
Title: Capacitors
Inventor: HEATH JOHN DOUGLAS
IPC: H01G4/30
Filed: 1968-12-04
Abstract: 1282567 Capacitors JOSEPH LUCAS (INDUSTRIES) Ltd 17 Nov 1969 [4 Dec 1968] 57524/68 Heading H1M In a method of manufacturing a capacitor plastics strips 11, 12 have vapour deposited layers 11a, 11b and 12a, 12b on opposite sides thereof leaving unequal unmetallized margins, whereby when the strips are assembled as shown and wound into a roll, spiral grooves in the end faces have one metallized wall and are filled with metal by spraying to form terminals. The strips may be cut from a sheet bearing the metallized pattern shown in Fig. 2.
Patent GB-1392979-A (GB)
Title: Process for the prepartion of cellulose pulp
IPC: D21B1/16
Filed: 1972-12-13
Abstract: 1392979 Bleaching pulp MO OCH DOMSJO AB 13 Dec 1972 [14 Dec 1971] 57574/72 Heading D1P Bleached pulp is formed by mechanically liberating wood fibres in a grinding region, bleaching the pulp obtained with a peroxide as the sole bleaching agent, the mechanical liberation of the fibres being carried out in the presence of spent liquor of pH greater than 7.0 from the peroxide bleaching stage. The bleaching agent may be hydrogen peroxide, sodium peroxide or paracetic acid. The spent water may contain complex formers such as ethylenediamine - tetraacetic acid, nitrilotriacetic acid, diethylenetriamine penteracetic acid, ethylenediamine triacetic acid, tetraethylenepenteramine heptaacetic acid, hydroxethylenediamine triacetic acid and alkali metal salts thereof, iminodiacetic acid, 2- hydroxyethylimino diacetic acid, cyclohexanediamine tetraacetic acid, anthranil-N, N-diacetic acid, 2-picolylamine-N, N-diacfftic acid, RCHOHCOOH or RCHOHCH 2 COOH where R is H or C1-9 alkyl, e.g. glycolic acid, lactic acid, 1, 2 hydroxypropionic acid, dihydroxybutyric acid, hydroxy-n-valeric acid, sugar acids, aldonic acids such as gluconic acid, galactonic acid, mannonic acid and saccharinic acid. The liquor may also contain magnesium oxide, magnesium hydroxide, magnesium carbonate, magnesium chloride, magnesium nitrate, magnesium acetate, magnesium sulphate or magnesium complexes of the above complex formers sodium hydroxide or sodium silicate. As shown, wood is ground 1, passed to pressure screens and centricleaners 2, screened 3, dewatered 4, pumped 5, bleached 6 passed to cap-forming machine 7 and dried at 8. Bleaching liquor is returned to the grinding stage via line 17. Reject screenings can be refined 9, screened 10 and recycled.
Patent GB-1152939-A (GB)
Title: Injector for Torches for the Thermochemical Processing of Workpieces
IPC: F23D14/34
Filed: 1967-12-20
Abstract: 1,152,939. Blowpipe burners. MESSER GRIESHEIM G.m.b.H. 20 Dec., 1967 [23 Dec., 1966], No. 57775/67. Heading F4T. An oxy-fuel torch with a tube 18 supplying cutting oxygen and a tube 19 supplying a fuel gas-oxygen mixture to a head 13 has an injector consisting of an insert 25 disposed in a recess 26 in the casing part 12 transversely of the pipes 18, 19. Heating oxygen passes through a valve (10) into a passage 24 and to a pressure nozzlebore 30; fuel gas passes through a valve (11) into an annular passage 33 surrounding the insert 25 to which passage suction is applied by the flowing heating oxygen.
Patent GB-1428798-A (GB)
Title: Rolling m'lls
IPC: B21B13/06
Filed: 1973-12-14
Abstract: 1428798 Rolling mills DEMAG AG 14 Dec 1973 [16 Dec 1972] 58068/73 Heading B3M A roll unit, having vertical rolls connected to a gear-box 15, is able to replace the rolls normally located in a rolling mill stand. An input shaft 19, which drives the vertical rolls through gearing 17, 16, 18, 13 and 14, can be connected to one of the two normal drive-shaft couplings of the stand. The other coupling may be supported by an idle shaft 22 supported in the stand. Alternatively, a separate driving motor bolted to the stand may be connected to the shaft 19.
Patent GB-1425777-A (GB)
Title: Devices for memorizing the content of a counter
IPC: H03K21/40
Filed: 1973-12-17
Abstract: 1425777 Restoring a counter after power failure R ALKAN & CIE 17 Dec 1973 [22 Dec 1972] 58275/73 Heading G4D [Also in Division H3] In an arrangement for restoring a count in an electronic counter 4 after a power failure, the state of each bit A, B, C, D of the count is stored in a bi-stable relay 8 which is set only at the end of a train of input pulses so that it need not operate at the counting speed of the counter. Input pulses are applied at W to the counter 4 and to a circuit 11 which includes a capacitor C2. Capacitor C2 is charged through a low resistance R3 by the pulses and discharged through a high resistance R4; transistor Q1 is therefore turned on continuously during a train of pulses at W. A monostable M is triggered when Q1 turns off at the end of such a train and energizes a relay 7 whose contact then connects the supply voltage to the bi-stable relay 8, either coil b1 or b2 being energized according to the state at counter output A. Similar circuits record the other outputs B, C, D of the counter. Upon restoration of supply after a failure a signal is delivered from an inverter I to an input L of the counter causing it to read in the values recorded in the relays 8 by way of its " DATA " terminals. After a short period a capacitor C1 charges triggering an SCR Th1 to end the signal and allow the counter to continue counting.
Patent GB-583870-A (GB)
Abstract: 583,870. Clock driven indicators. LAPIDUS, H. E. April 8, 1944, No. 6586. [Class 118 (i)] A timing indicator for a programme of intended proceedings such as appointments, lectures or speeches, comprises a relatively movable indicating member and a paper strip on which the programme is represented. In one form described, the paper strip is held in a frame and an indicator in the form of a wire across the strip is moved downwardly by a drive mechanism from a clock or electric motor. In a portable form the paper strip is mounted on spring-controlled rollers and passes over a platen driven by a mechanism which moves the paper strip forwards while the indicator remains stationary. A plurality of programmes may be represented in parallel columns with a common indicating wire. A mechanical or electrical means may be provided to give an audible or visible signal at pre-arranged intervals. Reference has been directed by the Comptroller to specifications 187,459,[Class 118 (i)], 460,544 and 496,837.
Patent GB-1410199-A (GB)
Title: Switch control circuit
IPC: H02M3/337
Filed: 1972-12-21
Abstract: 1410199 Automatic voltage control COMPAGNIE HONEYWELL BULL 21 Dec 1972 [28 Dec 1971] 59166/72 Heading G3R A chopper arrangement for a power supply circuit includes a sawtooth generator and two comparator circuits which receive the sawtooth signal, a reference signal, and a feedback signal and produce output pulses of variable duration which are supplied to AND gates together with signals from a bi-stable device to form control signals for a pair of switches in the supply. In Fig.1, A.C. supply terminals 1 are connected through chopper elements 10, 11, which may be transistors, to a transformer 2, the output of which is rectified and filtered. The output voltage is sensed at a terminal 7 and fed back to a differential amplifier 12 where it is compared with a reference signal r to produce an error signal e. A second comparator circuit 13 receives as inputs the error signal and a sawtooth signal S from a generator 14, and supplies variable width pulses to control the elements 10, 11. Pulses from a bi-stable circuit 15, derived from the generator 14, set AND gates 16, 17 so that the pulses from circuit 13 are fed to the appropriate chopper element. The sawtooth generator 14 may include a uni-junction transistor and a capacitor which supply synchronized signals to the comparator 13 and bi-stable circuit 15, Figs. 2, 3 (not shown).
Patent GB-1345360-A (GB)
Title: Two-channel radio direction-finder
IPC: G01S3/14
Filed: 1971-12-23
Abstract: 1345360 Radio direction finders INTERNATIONAL STANDARD ELECTRIC CORP 23 Dec 1971 [23 Dec 1970 7 May 1971] 59926/71 Heading H4D In a direction finder, the relative gains of amplifiers fed with signals from loop aerials are automatically adjusted while their inputs are connected together so that the difference in gains takes into account the quadrantal error. Signals from loop antennas 1, 2 are passed via tuned amplifiers 6, 7 to CRT 4 indicating the signal bearing. Amplifier 7 is adjusted by devices 9, 5 while the amplifier inputs are corrected by switch 3. During adjustment their outputs are compared at device 5 which produces a control signal for device 9 which adjusts amplifier 7 until device 5 detects a predetermined difference in the outputs of amplifiers 6, 7 which corresponds to the required quadrantal error correction. When the finder is taking bearings a digital bearing display 8 is operative. In the embodiment of Fig. 2 (not shown) an attenuator (10) is inserted between amplifiers 7 and device 5 so that the predetermined difference in amplitude between the outputs from amplifiers 6, 7 produces equal amplitude signals at device 5. In the embodiment of Fig. 3 the output of device 5<SP>1</SP> is passed to digital display 16 via a device 17, for converting the output to degrees, and also to unit 18. The quadrantal error adjustment is set up as a code in unit 19 which controls device 18. Device 5<SP>1</SP> produces a 25% duty cycle square wave when the outputs from amplifiers 6, 7 are equal and this is modified by unit 18 according to the code in unit 19. For example, if unit 19 is set to 1 degree error unit 18 reduces the duty cycle to correspond to a 44 degree line on the CRT 4 and not 45 degrees. Device 20 then detects the 44 degree signal and adjusts the gain of amplifier 7 in an attempt to obtain a 45 degree signal. This results in a 46 degree signal at 5<SP>1</SP> output which is modified by unit 18 to give a 45 degree signal. Device 20 therefore detects this signal and produces no further adjustment of amplifier 7. In the embodiment of Fig. 7 (not shown) units 20 and 18 are combined in a single modified unit (75) controlled by a code in unit (76). In a further embodiment (Fig. 10, not shown) the attentuator 10 of Fig. 2 is insertable in either channel. This is so that the attenuator can be inserted in the amplifier 6 channel when that amplifier is required to have a greater gain than amplifier 7 to compensate for the quadrantal error. Circuits for units 5<SP>1</SP>, 17, 18, 19, 20, 75 and 76 are described in detail.
Patent GB-1346118-A (GB)
Title: Foundry mould jacket and weight shifter
IPC: B22D33/06
Filed: 1971-12-23
Abstract: 1346118 Mould weights and jackets; foundry plant M W HARTMANN MFG CO Inc 23 Dec 1971 [24 Dec 1970] 60148/71 Heading B3F [Also in Division B8] A mould jacket (and weight) handling apparatus for foundry plant comprises a support 11 and a boom 12 swingable over a limited angular range, e.g. between positions above two parallel flights of mould-carrying conveyers (not shown).  A lift rod 35, supporting a jacket clamp 44, is mounted at the outer end of the boom 12 and is liftable by a fluid motor 35. A parallelogram linkage 12, 41, 42, 43 (see Fig. 5) is provided for keeping the compass orientation of the jacket clamp 44 the same at each end of the limited boom swing range. The clamp 44 includes four arms 46, 47 provided with projections (52) for engaging a mould jacket J, the arms being operated by a fluid motor 51. In operation, the apparatus may lift a jacket (and weight) from a poured casting mould on one flight of a conveyer (with the aid of vibrators 55), swing the jacket over to a second conveyer flight and lower it on to an unpoured casting mould resting on the second conveyer flight.
Patent GB-603229-A (GB)
IPC: H01P5/02
Abstract: 603,229. Impedance transforming. AMAL. GAMATED WIRELESS (AUSTRALASIA), Ltd Feb. 2, 1945, No. 2737 Convention date, March 3, 1944. [Class 40 (viii)], An impedance changing device consists of a fourwire transmission line, having adjacent wires connected in parallel, the wires being arranged in a coplanar relationship in a formation of rectangular cross-section, and having horizontal and vertical separations d and b which are caused to vary linearly along the line in such a way as to cause the distributed inductance and capacity (and hence the characteristic impedance) to vary substantially exponentially along the line. If the necessary conditions are to be satisfied b must increase as d decreases and vice versa. If r is the radius of the wire, the characteristic impedance Zo, calculated from a given formula, can be plotted on a logarithmic scale against d /r as a series of curves for different values of b /r, Fig. 1: A straight line (shown dotted) is then drawn such that substantially equal intercepts are made on it by curves having equal b/r spacings. The values of b /r and d/r can then be obtained from the straight line at the values of the impedances (Zo) required at the two terminals. To ensure greater accuracy' the line may be divided into two or more parts having different rates of taper, as shown in Fig. 3, the dotted line being then divided into two (as in Fig. 1) or more parts so that the intercepts by the curves may be made more nearly equal in the respective sections.
Patent GB-1240849-A (GB)
Title: Production of phthalic acids
IPC: C07C51/265
Filed: 1968-12-20
Abstract: 1,240,849. Production of phthalic acids. BADISCHE ANILIN- & SODA-FABRIK A.G. 20 Dec., 1968 [22 Dec., 1967], No. 60675/68. Heading C2C. A process for the production of phthalic acids, particularly terephthalic acid, comprises the oxidation of the corresponding xylene with oxygen or mixtures of oxygen and ozone in the presence of cobalt II salts, e.g. the acetate, naphthenate, benzoate, and alkane carboxylic acids, e.g. acetic acid, propionic acid, at elevated temperature, wherein the reaction mixture after the xylene oxidation and after separation of the phthalic acids which have separated out is continuously treated at a temperature of from 90-180‹ C. and at a pressure of from 1 to 10 atmospheres with a mixture of oxygen and ozone in a molar ratio of from 1:0À01 to 1:0À10 and then returned to the reaction; the mixture of oxygen and ozone used in this after-treatment may then be returned to the oxidation reaction as oxidizing agent.
Patent GB-1285120-A (GB)
Title: Ball and socket joint
Inventor: MAYER ERNST
IPC: F16C11/06
Filed: 1970-12-22
Abstract: 1285120 Ball joint housing W SCHAEFFLER & G SCHAEFFLER [trading as INDUSTRIEWERK SCHAEFFLER OHG] 22 Dec 1970 [27 Dec 1969] 60930/70 Heading E2F A ball and socket joint housing comprises a U-shaped sheet-metal part 4 having its arms embracing and rigidly attached to a solid member 3 having a part spherical surface facing the base of the U to form therebetween a part-spherical space for a ball 1. The solid member 3 may have grooves and/or bosses to facilitate resistance welding 5 to the U-shaped part 4. Alternatively the parts 3, 4 may be screwed or rivetted together. A bolt 2 may pass through a bore in the ball 1 or be formed integrally therewith. The member 3 may have a female screw thread 6 and key faces for a spanner. The ball 1 may be of plastics or a metal alloy, may be assembled in two halves and may have slits or recesses for a lubricant.