baber/WOPTO huggingface dataset:
Patent GB-1265042-A (GB)
IPC: C01F5/26
Filed: 1969-06-30
Abstract: 1265042 Purification of crude carnallite; separation of potassium and magnesium therefrom NATIONAL LEAD CO 30 June 1969 [28 June 1968] 32962/69 Heading C1A Crude carnallite (MgCl 2 .KCl. 6H 2 O) which is contaminated with sodium chloride, is purified by a process in which the crude carnallite is subjected to flotation concentration in an aqueous brine in equilibrium therewith, at a temperature of less than 10C. The "aqueous brine" in equilibrium with carnallite is defined as being the mother liquor from which kainite salt (MgSO 4 .KCl.3H 2 O) is precipitated when kainite is converted to carnallite by cooling to below 10C. In the process of the invention, the crude carnallite is preferably obtained by immersing kainite in an aqueous brine (as defined) in equilibrium therewith and cooling to less than 10C. for a time sufficient for the conversion of kainite to carnallite. The flotation concentration is preferably carried out in the presence of both a fatty amine acetate or chloride containing at least 8 carbon atoms in the fatty group, and an aliphatic alcohol containing at least 5 carbon atoms. Potassium and magnesium values may be recovered from the purified carnallite by washing it with water to produce precipitated KCl and MgCl 2  brine, which are separated. The KCl may then be reacted with MgSO 4  to produce K 2 SO 4  precipitate and MgCl 2  brine which are separated. In a modification of the above, the KCl produced in the first step (water washing) is dissolved in water to produce a saturated solution and is reacted with kainite (MgsO 4 .KCl.3H 2 O) to produce MgCl 2  brine and K 2 SO 4  precipitate which are separated. Also, the purified carnallite (MgCl 2  .KCl.6H 2 O) may be reacted, preferably in equimolar proportions, with kainite in aqueous medium to give MgCl 2  brine and precipitated K 2 SO 4 , which are separated.
Patent GB-1265946-A (GB)
IPC: F21K5/14
Filed: 1970-05-26
Abstract: 1,265,946. Flash-bulbs. GTE SYLVANIA Inc. May 26, 1970 [May 23, 1969], No.25263/70. Heading G2L. [Also in Division Cl] In a method of manufacturing a flash-bulb of the percussive type the fulminating material forming the priming charge is prepared as a two-part system having fuels in one part and oxidizer in the other, the two parts being mixed together immediately prior to the insertion of the charge into the primer. A preferred system has the following composition by weight: PART A Red phosphorus 18-12% Boron 13À54% Magnesium oxide À31% Sulphur À02% Zirconium 14À93% Hydroxyethylcellulose À83% Orthophenylphenol À01% Sodium tetradecylsulphate À04% Water 52À20% PART B Potassium chlorate 43À91% Magnesium oxide À42% Lignin sulphonate À21% Hydroxyethylcellulose À33% Orthophenyphenol trace Water 55À13% the charge being prepared by mixing 1 part by wet weight of A with 0À42 parts by wet weight of B.
Patent GB-1289774-A (GB)
IPC: G10H1/32
Filed: 1970-06-05
Abstract: 1289774 Electrophonic musical instruments F H DIXIE 31 Aug 1971 [5 June 1970] 27204/70 Heading G5J A polyphonic electronic musical instrument has two piano-type keyboards 4, 5 arranged so that they may be played with the left and right hand when the instrument is held in front of the chest. The central section 8 carries switches 10 and 11 controlling formant circuits, pitch range of the keyboards and vibrato. The keys may be of standard piano or accordian size and two keyboards may be provided on each side of the central section 8. The instrument is preferably supported by shoulder straps 6, 7, but its weight may be taken by a stand.
Patent GB-1295359-A (GB)
IPC: E02D5/08
Filed: 1970-03-23
Abstract: 1295359 Sheet piles; joining metal sheets WENDEL-SIDELOR 23 March 1970 [22 April 1969] 13801/70 Headings E1H and E1K To facilitate oblique disposition of Larssentype piles P1, P2 the adjacent edges thereof are linked by an elongate member R with tapered edges, or "hooking noses", 17, 18. Whereas the angle between surfaces 22, 31 of the nose 18 is substantially equal to the angle a between surfaces 3, 6 on each of the piles, the angle a' between surfaces 20; 30 of the nose 17 is appreciably less than the angle a. Thus, depending upon the angle (a-a'), the angle between the median plane X-X of the number relative to that of the pile with which the nose 17 engagescan be varied, the angular position of the member relative to the other pile being substantially fixed. The longitudinal length of the member may be equal to, or less than, that of each pile. The edge 33 of the member may be welded to one of the piles in a region between its edges, the other pile engaging with the nose 17, Figs. 5 and 6 (not shown).
Patent GB-1296130-A (GB)
IPC: D04B15/78
Filed: 1970-05-06
Abstract: 1296130 Knitting-machines WARNER & SWASEY CO 6 May 1970 [13 May 1969] 21827/70 Heading D1C  In a circular machine in which the needles 17 are actuated by pivoted jacks 20 the butts 25 are selectively withdrawn from cam track 30 by selector jacks 53 having a staggered series of butts 60 and selected by a corresponding series of electromagnetic devices at each station. The lower ends 54 of all jacks 53 are deflected radially outwards so that butt 56 engages raise cam 57. Unselected jacks are raised thereby and their top end 90 deflected inwards by edge 92. The lower end of jack 20 engaged between arms 51, 52 of the selector jack is deflected to withdraw the butt 25. In this position Figure 4 undesirable movement of the jack is prevented by engagement of the lower end between lug 85 and surface 57b, and of the upper end between recess 95 and surface 79b. Selected jacks are deflected by the device to avoid cam 57 allowing butts 25 to remain in track 30 to knit or tuck. In this position Figure 5 the bottom of the jack is trapped by lug 85 and surface 57b, the top lug 15a, 79a. The electromagnetic devices may comprise a lever 70 raised to the level of butt 60 by an energised coil 80. Alternatively permanent magnets (150 Fig. 7 not shown) fixed to pivoting selector jacks are attracted or repelled by an electromagnet (151). In a further embodiment an oblique selector butt (60 Fig. 6 not shown) engages a corresponding slot (122) in a cam (121) moved radially by an electromagnet. Radial movement of the cam raises or lowers the selector so that its oblique upper surface (130) pivots the lower end of the jack (20) as required. The stitch cam and corresponding cam defining the lower edge of the cam track with its pivoting tuck cam are adjustable vertically as a unit.
Patent GB-1297266-A (GB)
IPC: B01J23/96
Filed: 1969-12-19
Abstract: 1297266 Production of Sn-Pt and/or Pd alloy catalysts BUSH BOAKE ALLEN Ltd 18 Dec 1970 [19 Dec 1969] 61964/69 Headings C7A and C7D [Also in Division C2] Crystalline tin/platinum and/or palladium alloys are used as catalysts in the oxidation of organic compounds with oxygen. The metals are preferably combined in a weight ratio of platinum or palladium : tin of 3 : 1 to 1 : 4. The alloys may be supported, e.g. on alumina, silica, retracting mineral silicates or barium carbonate. The binary alloys are prepared by mixing solutions of tin and platinum (or palladium) halides, evaporating and reducing the metal halide mixture with hydrogen. Alternatively, powdered tin metal may be heated with palladium or platinum powder, sponge or foil. Supported catalysts are prepared by absorbing solutions or suspensions of tin and the platinum group metals as such or as salts thereof on an inorganic substrate, the solvent evaporated, and the salts reduced in situ by the action of hydrogen. The catalysts may be used in the oxidation of hydrocarbons, alcohols, aldehydes, phosphite esters and nitroso compounds.
Patent GB-1297463-A (GB)
IPC: G06K13/07
Filed: 1971-05-28
Abstract: 1297463 Perforated card reader MASCHINENFABRIK AD SCHULTHESS & CO AG 29 May 1971 [26 June 1970] 17793/71 Heading G4M Perforated card reader for use in controlling a washing machine or a dry cleaning machine has drive, scanning and switching means all situated on the same side of the card and has a sprocket drive pivotally mounted and moved to an inoperative position on reverse movement of the card. The reader has a base-plate 1 along which the card 3 moves, an opening in approximately the centre of the plate through which a sprocket 27 can protrude to engage holes in the centre of the card and a driven sprocket 34 engaging sprocket 27. Sprocket 27 is hollow and rests on either a roller 36 or a roller 35. As shown in Fig. 3b the sprocket is retracted and held in position by a friction brake 38 consisting of a spring loaded plate urged against the sprocket. When the motor is switched on, reaction on the sprocket rotates it about the brake to cause teeth to engage a card on plate 1. If a card is pushed in the reverse direction to its feed direction the sprocket is forced downwards to the position shown in Fig. 3b. Perforations in the card are sensed by elements 14, 14<SP>1</SP> (Fig. 4) on levers pivotally mounted at 12 or 12<SP>1</SP> and contacting spring loaded contact buttons 13, 13<SP>1</SP> on switches 10, 10<SP>1</SP> so that the switch is in one position if the elements pass through perforations and in a second position if they do not. The card is guided by side walls 4<SP>1</SP> of the reader.
Patent GB-1301931-A (GB)
IPC: G01L21/00
Filed: 1970-01-01
Abstract: 1301931 Measuring partial pressure of gases AGENCE NATIONALE DE VALORISATION DE LA RECHERCHE 1 Jan 1970 34/70 Heading G1N [Also in Division H1] The partial pressure, i.e. in the range below 10<SP>-3</SP> atmospheres, of gaseous substances which form metallic compounds, (e.g. oxygen, sulphur), is determined by placing a selected metallic compound, e.g. zirconia, of a selected gaseous substance, i.e. oxygen, in an atmosphere containing the gaseous substance, heating the compound to its stable temperature T and measuring either the thermo-electronic emission J or the work function EÏ of the compound to give a value of the partial pressure P from the equations, log J=K 1 -Z log P EÏ =K 2 +Z k T log P where k, K 1  and K 2  are constants, and Z a characteristic value of the defects of the structure of the compound. The partial pressure is determined by reading the values of log P corresponding to the measured value J or EÏ on pre-plotted graphs. In plotting the straight line graphs representing the above equations, it is found that for given temperatures T the value of Z (i.e. the slope) is not definite in a certain range of partial pressures, but takes definite values Z 1  and Z 2  on either side of this pressure range. If a measurement falls within this pressure range, the temperature to which the compound is heated is altered in which case the straight lines are displaced parallel to each other, Fig.2 and Fig.4 (not shown). As shown in Fig.1, the thermo-electronic emission J of zirconia, which is deposited as a thin film on a filament 1 and acts as a cathode, is determined by placing an anode 5 around the filament 1 (guard electrodes 6a and 6b also being provided), electrically heating the filament and maintaining its temperature constant by a bridge circuit, Fig.5 (not shown), maintaining a constant potential between the cathode and anode, and measuring the resulting current, when the apparatus is mounted in an enclosure 12 containing oxygen whose partial pressure is to be determined. An apparatus for determining the work function of zirconia is described in connection with Fig.3 (not shown), and comprises a cathode coated with zirconia and a vibrating anode, a voltage being applied between the cathode and anode sufficient to produce zero current in the circuit.
Patent GB-1306016-A (GB)
IPC: F16K31/02
Filed: 1971-09-08
Abstract: 1306016 Valves MACLAREN CONTROLS Ltd 8 Sept 1971 41832/71 Heading F2V Electromagnets 14, 15 which co-operate with armatures 12, 13 on valve spindles 8 are mounted on cam followers 18, 19 that are urged by springs 27, 28 against cams 20, 21 on electric motor driven shaft 22. On rotation of shaft 22 cams 20, 21 lift the closures 4, 5 from their seats 2, 3. On electrical failure electromagnets 14, 15 release the armatures to allow the closures to seat under the action of springs 6, 7. Cam 24 on shaft 22 actuates contacts 26. In a modification a closure is mounted on a rotary spindle.
Patent GB-1306237-A (GB)
IPC: B60M1/24
Filed: 1970-07-15
Abstract: 1306237 Clamps BRITISH INSULATED CALLENDERS CABLES Ltd 15 July 1971 [15 July 1970] 34339/70 Heading E2B A fastening for supporting an overhead traction wire 6 comprises a pair of plastics plates 1, 2 which have mutually interengaging pins and holes 7, 8 and which have normally open jaws 4, 5 which are held closed, Figs. 1 and 4 by an H-shaped plastics member 3 whose bar 17 passes through holes 11 in the plates and whose upper limbs 15, 16 hold the plates together and whose lower limbs 13, 14 hold the jaws in the gripping position. The bar 17 is so shaped that it turns with snap-action in the hole 11 and pips 18 enhance this action. Stiffening ribs 19, 20 may be provided on the plates.
Patent GB-1311615-A (GB)
Title: Simulated radio-activity monitoring arrangements
IPC: G06G7/54
Filed: 1971-03-26
Abstract: 1311615 Training in warfare MARCONI CO Ltd 26 Nov 1971 [26 March 1971] 8031/71 Heading F3C [Also in Division G5] A system for training personnel under condi-  tions of simulated radio-activity comprises a base station 1 and two slave stations A, B which are geographically disposed at the apices of a triangle within which lies territory assumed to have been involved either in a nuclear attack or in an accident with nuclear material; a plurality of field instruments 2 to be carried by the per sonnel under training; a unit 4 and receivers 7, 8, 9 at the base station which, on receipt of signals from the instruments 2 and the stations A, B, co-operate to locate the position of each instrument; and apparatus including a computer 3 and the units 4, 5, 6 at the base station for transmitting to each instrument 2 a data signal representing assumed radiation level at the location of that instrument so that, for each participant in the training exercise, the field instrument behaves as if it were normally operational. The field instruments are of known type in which the normal radiation measuring or monitoring circuits are replaced by electric circuits capable of distinguishing a signal addressed to a particular instrument by the base station and utilizing data supplied thereby to provide a response to the participant similar to the response which would be given by that instrument in a real radio-active situation; a suitably modified instrument is described with reference to Figs. 2 and 3 (not shown).
Patent GB-1315590-A (GB)
Title: Foot support
IPC: A61F5/01
Filed: 1971-01-26
Abstract: 1315590 Foot support HUGH STEEPER (ROEHAMPTON) Ltd 29 Nov 1971 [26 Jan 1971] 3199/71 Heading A5R A foot support, for releasable attachment to a shoe and to the leg of a person who wears the foot support, comprises an adjustable clamp 12 having clamping members 22, 24 to grip the welt of a shoe between them and a bracket 10 extending from the clamp and provided at an end remote from the clamp 12 with releasable fastening means 14 comprising releasably adhering straps 40, 42 for fastening that end to the leg of the wearer. The clamp 12 includes a pair of. internally screw-threaded studs through which passes a metal or synthetic plastics rod 16, forming the bracket 10. The studs 18, 20 are moved towards and away from each other by a double-ended screw 26 having left- and right-handed threads 28, 30, the screw 26 being rotated by a rod or spike (not shown) inserted in holes 32 in the central section of the screw 26.
Patent GB-1324882-A (GB)
Title: Kiln cars
IPC: F27D5/00
Filed: 1970-10-24
Abstract: 1324882 Kiln cars ACME MARLS Ltd 15 Oct 1971 [24 Oct 1970] 50616/70 Heading F4B A kiln car 10 is provided with a supporting structure of ceramic refractory material comprising a plurality of shelves 22 slidably assembled with a plurality of support members 14, 16 so that any one shelf may easily be removed without dismantling the entire structure. Shouldered shelf-bearing members 14 are spaced vertically by spacer members 16. Members 14 have raised strips 15a acting as guides to facilitate insertion of the shelves 22. The supporting structure may be cross-braced by members (24), Fig. 3 (not shown).
Patent GB-1336028-A (GB)
Title: Atomising of metals
IPC: B22F3/10
Filed: 1971-01-16
Abstract: 1336028 Granulating metals A R E SINGER 30 March 1972 [16 Jan 1971] 2216/71 Heading C7X Molten metal, e.g. steel or Al, is granulated by feeding it between oppositely rotating rollers 3. Gas, e.g. air and water from jets 8 assist in breaking up the metal. The granules 10 are removed by a conveyor 11. The operation may be carried out in an inert or reducing gas for e.g. aluminium. The rollers may be right cylinders or conical with their axes parallel or at an angle, and may rotate at different speeds. When the rollers are of metal, e. g. steel, they may be cooled by liquid sprayed from nozzles 5 to prevent the metal from sticking to the rollers. Alternatively porous sintered rollers may be used with e. g. water or a gas fed through the pores from the inside or ceramic, cermet or metal with "non-wetting" coatings may be used for the rollers if they are at or above the temperature of the melting point of the metal.'  Jets of gas may be used to prevent the metal from spreading axially along the rollers.
Patent GB-1339327-A (GB)
Title: Mechanical servo devices
IPC: F16D23/12
Filed: 1971-03-31
Abstract: 1339327 Clutch control; toggles AUTOMOTIVE PRODUCTS CO Ltd 23 Feb 1972 [31 March 1971] 8325/71 Headings F2L and F2K In a clutch release mechanism for a spring engaged friction clutch in which a member 16, 64 is arranged for translational movement by an operator to effect release of the clutch, a mechanical servo comprising spring means which exert a force normal to the direction of movement of the member 16, 64 are provided, these means exerting a component of force to aid the movement of the member when the mechanism is operated to release the clutch. The device shown in Fig. 1 comprises a rod 16 acted on by an overcentre toggle arrangement comprising pivoted links 26, there being springs connected between pivots 33, these springs aiding movement of rod 16 to operate clutch 10 via master and slave cylinders 14 and 13 after initial movement of pedal 15. Further embodiments operating in a similar manner, but with alternative means of arranging the links or mounting the springs, are described, these springs being tension (Figs. 3, 5 and 7, not shown), compression (Figs. 8 and 13) or leaf springs (Fig. 14). A further series of embodiments has cam surfaces acted upon by sprung rollers to provide the overcentre action, two types being shown in Figs. 10 and 12, Fig. 10 having rollers 76 sprung by leaf springs 79  acting on cam surfaces 75 of the clutch operating member 64 and Fig. 12 having the rollers 81 pivoted to a member 86 on the rod 64 and acting outwardly on cam surfaces 82. Further alternatives are also described (Figs. 9, 11 and 15, not shown).
Patent GB-1352322-A (GB)
Title: Fastener
IPC: F16B5/06
Filed: 1970-04-06
Abstract: 1352322 Stud and socket fastenings F T PRODUCTS Ltd 19 April 1971 [6 April 1970] 16131/70 Heading E2B A fastener comprises axially slotted shank portions 11, 12, the shank portion 11 having shoulders 20, 20a and the shank portion 12 having shoulders 22, 22a in use the shoulders being wholly or partly behind apertured panels 27, 25, abutment surfaces 21, 21 on the shank portion 12 limiting insertion of the shank portion 11 into the aperture in the panel 27. The shank portions have a shape shown in Fig. 4 m cross section. Alternatively in order that the panels may be spaced the shank portions are separated by an annular collar 48 and flange 49 or by a cylindrical body portion 75. The shank portion 41 has two inclined slots 43, 44, the shank portion 73 has an elongated slot 78, and the shank portion 74 has a shorter elongated slot 83. The fastener is made of a resilient material which may be plastics.
Patent GB-1355347-A (GB)
Title: Recovery of cephalosporin c and derivatives thereof
IPC: C07D501/18
Filed: 1970-08-25
Abstract: 1355347 Cephalosporin C derivatives GLAXO LABORATORIES Ltd 6 Aug 1971 [25 Aug 1970] 40880/70 Heading C2A Cephalosporin C is converted to a derivative thereof wherein the nitrogen atom of the amino group on the D-5-amino-5-carboxypentanamido side chain is incorporated into a dihydropyrimidine ring by treatment in aqueous medium with at least one mole of formaldehyde and at least 2 moles of a #-ketoester per mole of cephalosporin C, whereafter the said derivative is isolated from the aqueous medium. The derivatives having the formula wherein R<SP>1</SP> and R<SP>2</SP> are the same or different and each is an alkyl, aralkyl, cycloalkyl, aryl or heterocyclic group, and salts thereof, are novel. They are prepared by using a #-ketoester of formula The formation of the cephalosporin C derivatives is used as a means for recovery of cephalosporin C from its impure aqueous solutions, e.g. fermentation broths. In such processes, the recovered derivative may be converted back to cephalosporin C by treatment with an amino acid, an acid addition salt of a primary amine or an ammonium salt of a weak acid, in an organic or aqueous-organic solvent. Suitable reactants are glycine, alanine or valine, the hydrochloride or sulphate of a C 1 -C 6  alkylamine, and ammonium acetate. The reaction is performed at slightly acidic (e.g. 5À5-6À0) pH. Alternatively, the derivative may be converted to 7-aminocephalosporanic acid by N-deacylation, e.g. by conversion to an imide halide with PCl 5 , reaction of the imide halide with an alcohol to give an imino-ether and hydrolysis or alcoholysis of the latter to give the 7-amino acid. The derivative is prepared by treating the aqueous solution of cephalosporin C (e.g. a fermentation broth filtrate freed from ammonium ions by treatment with an ion exchange resin) with formaldehyde and #-ketoester at 0‹-50‹ C. and pH 6-8À5, preferably with incremental addition of an alkali to maintain the said pH. The product is recovered by adjusting the pH to its isoelectric point (about pH 2À2) to precipitate the derivative, by extraction with a water-immiscible organic solvent at about pH 2, or by precipitation by converting it to a sparingly soluble salt, e.g. an alkali metal salt.
Patent GB-1436161-A (GB)
Title: Method and apparatus for synchronizing the reading of photo graphic records of digital information
IPC: G11B27/30
Filed: 1973-04-24
Abstract: 1436161 Recording and playback systems BATTELLE DEVELOPMENT CORP 24 April 1973 00247/76 Divided out of 1435603 Heading G4M The recording and playback system of the parent Specification 1,435,603 has a synchronization circuit arranged to detect the presence of an unused binary data configuration such as one of the two binary values for a zero. The data is held in a shift register and if such a configuration is detected the data is successively shifted by one bit value at a time until the configuration is not detected.