baber/WOPTO huggingface dataset:
Patent GB-676835-A (GB)
Title: Improvements relating to electric control devices of the transductor type
IPC: H03F9/04
Filed: 1950-05-02
Abstract: 676,835. Magnetic amplifiers. WESTING- HOUSE BRAKE & SIGNAL CO., Ltd., and WATSON, T. E. Feb. 21, 1951 [May 2, 1950], No. 10795/50. Class 40 (iv). In a self-magnetized transductor comprising a pair of paralleled main windings 2, 5, each supplied with half-wave rectified A.C. so that a unidirectional flux is established in a two-limb core 3, 4, the relationship between the currents in the two windings is controlled by the difference between the fluxes in an outer magnetic circuit 1 due to a D.C. control winding 16 and to a permanent magnet standard of reference 7. Air gaps 6, 9 and 15 direct the permanent and control fluxes through the two-limbed core, the main winding currents being equal only when these two fluxes are balanced. The main windings are energized by a centre-tapped transformer 12 over rectifiers 11, 13, the controlled currents being effective in a circuit providing an output voltage proportional to their difference. As shown, the output circuit includes the control windings 23-26 of two further transductors 19, 20 arranged in pushpull and including bias windings 27, 28 and magnetizing windings 29, 30, the latter being energized over full-wave rectifiers 35, 36 by the controlled current in main windings 31-34. The output of the system is obtained between centre tappings on a resistor 37 and a transformer 39. A condenser 38 across the output improves the wave-form, while condensers 21, 22 connected in the output circuit of the primary transductor enhance the stability of the arrangement by filtering off the even harmonics. According to the Specification, the arrangement may be used to control a centrebiased A.C. relay which operates in one of two directions according to the phase and amplitude of the A.C. output, these factors being determined by the direction and degree of unbalance between the permanent and control winding fluxes in the primary transductor. Specification 623,661 is referred to.
Patent GB-768512-A (GB)
Title: Improvements in or relating to pharmaceutical tablets
Filed: 1955-04-14
Abstract: A pharmaceutical tablet, which may be substantially flat-faced and cylindrical in form, has an exposed immediate release portion to provide an immediate therapeutic level of medicament and a sustained release portion of surface area 2.5 to 25 times that of its side surface to provide a substantially uniform release of medicament for a period greater than four hours.  The medicament in the immediate release portion may be dispersed in a filler e.g. talc, terra alba, stearic acid, and milk of sugar, and in the sustained release portion, the medicament may be dispersed in a time delay material e.g. starch, sugar, alginic acid, colloidal magnesium aluminium silicate.  The tablet is formed by mixing the medicament with the filler or time delay material, granulating e.g. with water, acacia solution, starch paste or gelatin solution, comprising the granules of the immediate release material to form layers which are then tabletted with granules of the sustained release material to form a laminated tablet. Medicaments specified are aminophylline, dextro-amphetamine sulphate, phenobarbital, amobarbital, chlorprophenpyridamine maleate, thenylpyramine hydrochloride, homatropine methyl bromide, atropine sulphate, hyoscyamine sulphate, scopolamine hydrobromide.  Time delay materials are fatty alcohols having from 12 to 31 carbon atoms e.g. lauryl, cetyl, stearyl, myristyl, myricyl, arachyl, carnaubye, ceryl alcohol; esters of fatty acids having 12 to 31 carbon atoms with these alcohols e.g. myricyl, p  cetyl, ceryl, stearyl palmitate, myricyl and ceryl cerotate, myricyl melissate, cetyl or stearyl myristate and lauryl laurate; mono-, di-or tri-glyceryl esters of fatty acids having 10 to 22 carbon atoms e.g. glyceryl mono-, di-, tri-palmitate, mono, di-, trilaurate, mono-, di-, tri-docosanoate, mono-, di-, tri-caprate, mono-, di-, tri-myristate, mono-, di-, tri-decenoate; hydrogenated castor, peanut and coconut oil; spermaceti, carnauba and beeswax.
Patent GB-749449-A (GB)
Title: Lubricating compositions
Filed: 1953-04-21
Abstract: A lubricating composition comprises 40-55 parts by weight of tricresyl phosphate, cresyl diphenyl phosphate or phenyl dicresyl phosphate, 45-60 parts of a chlorinated diphenyl containing 40-60 per cent of combined chlorine, and a thickening agent which is (a) silica aerogel, (b) an ammonium or phosphonium salt of bentonite, or (c) a metal soap of a fatty acid having 14-20 carbon atoms, or a mixture of 2 or more of (a), (b) and (c).  The bentonite salts are those wherein the sodium ion of Wyoming bentonite or the magnesium ion of hectorite is replaced by a pentavalent nitrogen or phosphorus atom having at least one aliphatic substituent containing at least 10 carbon atoms; other additional substituents may be aliphatic or aromatic radicals, e.g. phenyl, cresyl or naphthyl, alkyl radicals containing 1 to 18 carbon atoms; and cycloaliphatic radicals containing at least 6 carbon atoms, e.g. cyclohexyl.  Examples of bentonite salts are given. Soaps specified are sodium, lithium, calcium, magnesium or aluminium stearates, oleates, palmitates or linoleates.  Optical ingredients referred to are anti-foaming agents such as certain dimethyl siloxane polymers, V.I. improving agents such as the polyalkyl methacrylates and alkylated polystyrenes, corrosion inhibitors, anti-rusting agents, detergents, E.P. additives, antioxidants and flame-snuffers.
Patent GB-681684-A (GB)
Title: Insulating ring and protective device for cathode tube
IPC: H04N5/65
Filed: 1951-05-09
Abstract: 681,684. Cathode-ray tubes. FISCH, R. A. May 9, 1951, No. 10933/51. Class 39(i) [Also in Group XL(b)] A guard for a metal-backed cathode-ray tube 11 comprises a flexible insulating ring 30 which surrounds the flared end 15 of the tube and has inwardly extending flanges 31, 32 and 44. Flange 31 engages the insulating skirt 20 surrounding the rear of the tube, whilst flange 32 extends over the projecting edge 16 of the metal back. A plate of glass 47 is held in a felt seating 46 in the channel formed between flanges 32 and 44. The ring is clamped to the tube by an elastic band 52 accommodated within a channel 34, and an elastic rope 50 fitted into the channel over the band anchors the tube to the chassis 51, 55. An extension 61 is formed on one end 60 of the ring and fits within the other end 62 to ensure that no opening is left when the guard is fitted on a tube. The ring may be circular, elliptical, rectangular or polygonal depending on the shape of the tube. The Specification lists suitable plastic materials for making the guard.
Patent GB-746486-A (GB)
Title: A new process for the recovery of coal resins with simultaneous partial desulphurisation of the coal
IPC: C10L9/02
Filed: 1953-04-21
Abstract: 746,486. Treating coal. SIDDIQUI, S. Feb. 25, 1954 [April 21, 1953], No. 10949/53. Class 55(1). In a process for recovering resins and waxes from coal with simultaneous reduction of the sulphur content, the coal in powdered form is subjected to the action of super-heated steam at a temperature within the sub-carbonisation temperature range of the coal, e.g. between 200‹ and 330‹C. The powdered coal is reduced before treatment to a particle size within the range 20-60 mesh, B.S.S. and is preferably also preheated to about 100‹C. The treatment may be carried out in two stages, a first stage for 4-5 hours at temperatures up to 280‹ C. Œ 5‹ C. and then a further treatment at between 280 and 330‹C. In an example in a treatment lasting 10 hours the sulphur content of a coal was reduced from 4À2 to 3À1 per cent and 100 parts of coal powder yielded 79À1 parts of coal residue and a total of 9À7 parts of resin and waxy products on a moisture-free basis.
Patent GB-1073742-A (GB)
Title: Cellular polymeric films
Inventor: SLACK PHILIP TREVOR
IPC: D01D5/42
Filed: 1964-03-16
Abstract: An orientated cellular film is formed from a film forming polymer. The polymer or mixture of polymers are those which on longitudinal orientation only are capable of being shattered into a plurality of strands, each of the strands being joined to adjacent strands at random points along the length thereof to form an irregular net-like structure.  Preferred film-forming polymers are polyalkylenes or mixtures thereof, optionally in mixture with polystyrene, nylon or polyethylene terephthalate, which are shatterable in the orientated state.  The polymer may not be shatterable as such but is still orientated in the longitudinal dimension only, e.g. nylon or polyethylene terephthalate.  In general the degree of longitudinal stretch should be from 6:1 to 13:1.  The film may also be laterally stretched.  The film may be produced by extruding a mixture of the film-forming polymer and a blowing agent from a fish-tail die head. Exemplified blowing agent is azodicarbonamide. Preferably the blowing agent is present in amount from 0.06 to 1% by weight of the polymer.
Patent GB-816264-A (GB)
Title: Improvements in or relating to methods of purifying aldehydes and ketones of the vitamin a series
Filed: 1957-04-04
Abstract: Aldehydes and ketones of the Vitamin A-series, which can be used in the preparation of Vitamin A are purified by a process characterized in that the impure aldehydes or ketones, if necessary in a dissolved state, are reacted at a pH-value between 3 and 6 with a solution of a compound of the formula (Alk)2N-CH2-CO-NH-NH2 or a salt thereof, in which formula Alk designates an alkyl group, the reaction solution being, if desired, subjected to purification, the hydrazone obtained being then decomposed in an acid medium at a pH value of less than 3, and from the liquid thus obtained the aldehyde or ketone being separated out.  Aldehydes and ketones mentioned are b -ionone, b -ionylidene formaldehyde, b -ionylidene acetaldehyde, b -ionylidene-1-pentene-2-on-4, Vitamin A-aldehyde and neoretinene. The reaction between the aldehyde or ketone and the hydrazine may be carried out in an aqueous medium or an alcoholic medium, e.g. in methanol, ethanol, propanol, isopropanol or butanol.  The reaction product of the aldehyde or the ketone with the hydrazine is extracted by means of an aliphatic ether, e.g. dimethyl or diethyl ether or by means of benzene, chloroform, toluene, petroleum ether, cyclohexane, n-hexane or carbon tetrachloride to remove unconverted products. The hydrazones may be decomposed by acidification to a pH below 3 and the aldehyde or ketone extracted by means of a solvent, e.g. dimethyl or diethyl ether, benzene, chloroform, carbon tetrachloride, petroleum ether, ligroin, n-hexane and cyclohexane.  Alternatively the hydrazone is precipitated from alkaline solution before decomposition with acid at a pH below 3. Examples describe the purification of the compounds listed above.
Patent GB-317339-A (GB)
Title: An improved telephonic loud speaker
IPC: H04R1/28
Filed: 1928-04-14
Abstract: 317,339. Lanchester, F. W. April 14, 1928. Loud-speakers; diaphragms. - The diaphragm of a moving-coil loud-speaker communicates with a horn through a hollow central magnet core and a tube of uniform cross-section at least two feet long. The mica diaphragm b, Fig. 1, and coil d are suspended by three or more adjustable cords e in the annular gap of a pot-magnet , the central pole a of which is drilled with a hole f. A tube g preferably of lead and of uniform bore is connected to the passage f and is housed, Figs. 2, 4, in a cabinet containing a horn which has divergent sides and top and bottom, and may expand logarithmically. The base and roof of the horn are formed of panels, and the smaller end is connected to the tube g through a tube k of tapering form outside the cabinet, while the moving-coil unit m is also supported outside the cabinet and attached to the other end of tube g. Specifications 320,647; 325,784, 327,145, and 327,790, [all in Class 13, Bells &c.], are referred to.
Patent GB-435279-A (GB)
Title: Improvements in fluxes for aluminium and its alloys
IPC: C22B9/10
Filed: 1934-04-12
Abstract: A flux for aluminium and its alloys is prepared by mixing zinc chloride with sodium fluoride with or without potassium fluoride in the presence of water so that zinc fluoride is formed and sodium or potassium chloride.  The zinc chloride may be partly replaced (up to 10 per cent) by magnesium chloride, and the sodium or potassium fluorides may be partly replaced (up to 20 per cent) by the phosphates or borates.  To reduce the melting temperature of the flux and increase its stability under heat, chlorides of barium and strontium may be added, and to increase the reactivity of the flux sodium or potassium permanganate, chromate, or sulphate may be added.
Patent GB-842052-A (GB)
Title: Improvements relating to stapling machines
Inventor: GILBERT HENRY ERNEST
IPC: B25C5/02
Filed: 1958-04-08
Abstract: 842,052. Staplers. OFREX Ltd. April 8, 1959 [April 8, 1958], No. 11061/58. Class 89(3) [Also in Group XV] A portable desk-type-stapler comprises a recess 7 in its base I for the reception of a name &c. card 6, opposite-edges of the recess overlapping the edges of the card, and an opening 13, 14 at the rear of the recess facilitating ejection of the card by a pencil &c. inserted in the opening. The opening 13, 14 is formed in a metal backing- plate 12 and a rubber-lining 15, which extends beyond the base to provide a resilient-mounting for the machine. Backing 12 is attached to the lining by bent-over prongs 16. (Fig. 3. not shown). The card is protected by a celluloid sheet 10. The Provisional Specification states also that the card 6 may be mounted between two sheets of transparent-material.
Patent GB-311760-A (GB)
IPC: B41F1/52
Filed: 1929-04-10
Abstract: 311,760. Spiess, G. May 16, 1928, [Convention date]. Inking-apparatus.-In an inking-apparatus for a platen printing-machine in which the formeinking rollers are mounted in a reciprocating carriage and receive their ink from a distributing-cylinder, and in which throw-off mechanism is provided for moving the rollers out of contact with the cylinder, means are provided to prevent the actuation of the throw-off mechanism while the roller-carriage is reciprocating. The formeinking rollers 5 are carried by shanks 6 slidable in a carriage 3 reciprocating on guides 1, and receive their ink from a distributing-cylinder 7 against which they are pressed by springs on the shanks 6. The throw-off mechanism comprises side bars 11 slidable in the machine frame and provided with heads 12, adapted, when the bars are moved to the right, to engage the ends of the shanks 6 and move the rollers 5 out of contact with the cylinder 7. At the same time, inclined surfaces 13 on the bars 11, raise rods 14, 15 to lift distributing-rollers 9, 8 out of contact with the cylinder 7. The bars are held in this position by pawls 17 pivoted on the heads 12 and engaging abutments 4 on the carriage. At the upper ends of the guides 1 are blocks 26 pressed downwardly by springs 27 against stops and having projections 29 which, in the lowest position of the blocks, lie in the path of the pawls 17 so as to prevent movement of the bars 11. When the carriage 3 reaches the top of its stroke it raises the blocks 26 to lift the projections 29 clear of the pawls. The bars 11 are actuated by levers 25 pivoted on a cross-shaft 31 and operated by levers 21 connected by a hand-bar 22 and having projections 23 adapted to engage projections 32 on the levers 25. Arms 20 pivoted to the levers 21 rest on the tail ends of the pawls 17 when they engage the abutments 4 so' that by turning the levers 21, projections 30 thereon may be caused to depress the arms 20 to release the pawls. A spring 24 thereupon returns the bars 11 to their inoperative positions. If the spring 24 should fail to act, the bars are positively returned when the carriage 3 moves by the abutments 4 engaging cam projections 16 on the heads 12.
Patent GB-812563-A (GB)
Title: Improvements in or relating to machines for bending bars
Inventor: CAMPBELL JAMES LOVE
IPC: B21D11/10
Filed: 1956-04-12
Abstract: 812,563. Angular bending. SCOTTISH MACHINE TOOL CORPORATION Ltd. July 12, 1957 [April 12, 1956], No. 11140/56. Class 83 (4). A machine for bending bars comprises a headstock, a pair of pivotally connected clamping jaws, and links operatively connecting the jaws to the ram of an hydraulic press whereby the advance of the ram towards the headstock closes the jaws upon a bar or bars disposed between the jaws and the return of the ram effects the opening of the jaws, a subsidiary ram being mounted in the headstock to be movable to and from the jaws to be engageable with the bar or bars held by the jaws. A pair of flanged sections 15 to be bent are placed back to back in the machine to bear against supporting claws 8 on headstock 1. Jaws 2 swingable about a pin 11, on a carriage 11A slidable towards the headstock 1, are connected by pivoted links 4 to a ram 6 of an hydraulic cylinder 7 and, as the ram 6 is advanced, close towards the sections 15 and engage their outer flanges. Continued advance of the ram 6 then moves the jaws 2 forward to bend forward the flanges adjacent these parts of the sections 15 which will form the actual bend until a nose pad 9B on a screw 9 mounted in the pin 11 engages the sections 15. Further forward movement of the ram 6 then bends the sections 15 in co-operation with the claws 8. The screw 9 is adjustable in the pin 11 to determine the amount the flanges are bent over by the jaws 2, by gearing 9A driven by a motor 10. If the flanges of the sections are overbent by the jaws 2 a subsidiary ram 12 is advanced in the headstock 1, by gearing 13A driven by a motor 14, so that a V tool 12B, Fig. 3, carried thereby forces the flanges back. To form bent-back flanges nosepieces 2B, Fig. 3, are fitted to the jaws 2 which bend the flanges back in co-operation with the V tool 12B. To form splayed unflanged sections, sections 17, Fig. 4, are first bent by the ram 6 and then a wedge tool 12C on the ram 12 is moved towards the bent sections to splay their edge portions. If a flange on a section is to be bent relative to the web of the section without the section being bent as a whole a pad 12A on the ram 12 is first moved into contact with the section and the jaws 2 then bend the flange thereagainst. Specification 555,376 is referred to.
Patent GB-1040973-A (GB)
Title: Improvements in or relating to systems for storing and processing data
IPC: G06F12/10
Filed: 1965-03-16
Abstract: 1,040,973. Computer programming arrangements. SOC. INDUSTRIELLE BULL-GEN. ERAL ELECTRIC. March 16, 1965 [March 17, 1964], No. 11202/65. Heading G4A. The indirect addressing system described in Specification 1,038,558 is modified in that storage locations for the developed addresses of instructions are provided in addition to locations for the developed addresses of operands, locations for instructions and locations for operands. A jump instruction, which must contain an instruction address can thus be of the same length as an ordinary instruction. In the arrangement described a magnetic core matrix store has 1024 storage locations, each location storing a 5-bit character (Fig. 4, not shown). An ordinary instruction consists of three characters: a function character and two operand indirect address characters, called " indexes," each " index " being employed to address the memory to extract a 2-character " developed " address of the operand, this developed address then being employed to address the memory to read out the stored operand. The operands are of variable length and are separated in the memory by " flag " characters. A jump instruction also consists of three characters: a character denoting " jump," an " index " character for the instruction to which jump is required, and a " condition " character (e.g. >, <) indicating the conditions under which a jump is desired. The developed addresses for operands and the developed addresses for instructions are stored in separate memory sections, a register 705 (Fig. 1A, not shown), storing two constant characters, one of which is selected to complete the memory address according to an operand index or an instruction index is currently to address the memory 711. As in the aforementioned Specification, arithmetic operations are performed in an adder-subtractor 722 (Fig. 1B, not shown), by extracting the binary coded decimal digits of the two operands successively in pairs from the memory. The inequality tests required for a conditional jump instruction may be effected by subtracting the numbers in question. The address advancer 706 (Figs. 1C and 5, not shown), is effective in one of two modes in the first of which successive rows are selected to select successive digits of an operand and in the second of which successive columns are selected to select successive digits of a developed address.
Patent GB-1452382-A (GB)
Title: Horizontal flat bed through drying system
IPC: D21F5/00
Filed: 1974-03-13
Abstract: 1452382 Drying webs AER CORP 13 March 1974 [4 April 1973] 11226/74 Heading F4G A system for drying a wet web of fibrous material comprises a plurality of drier units 12, 14, 16, 18 each having an air input section 38 and an air outlet section 40, means, e.g. a frame, mounting the units in series between a web input end and a web outlet end of the system, a support of air pervious material for carrying the web through the units between the sections 38, 40, means for supplying heated air to the air input section of one of the units relatively adjacent the web outlet, means for directing air from the outlet section of the one unit to the input section of another unit relatively adjacent the web input, and means for removing air from the outlet section of the other unit. As shown four drier units 12, 14, 16, 18 are provided and these are connected in "half cascade" i.e. alternate ones are connected as disclosed above. Fresh, heated air is supplied by a fan 132, 170 to each first unit in the series, the air being heated downstream of the fan by a burner 136, 174. Fans and burners are provided in the other connections. Used exhausted air from the system is used to heat incoming fresh air in heat exchangers 128, 166. Alternatively the four units may be connected in cascade (Fig. 6, not shown). Provision is provided for either allowing heated air to enter a unit or for diverting the heated air to exhaust the circulation of air being controlled by thermocouples 228 placed in the units. Each unit is provided with air distribution plates 58, (68), one in each section 38, 40 and the section 40 has a variable position deckle system(s) 86 for supporting the longitudinal edges of the support of air pervious material and forming a seal therewith. The main body of the support is supported by a plurality of angularly adjustable, laterally extending rods 78 with which the deckle system(s) operate. Positioned above the deckle system 86 is a variable position means 120, 116, 118 for providing a curtain of cool air to prevent the longitudinal regional portions of the support from being overheated. In the unit 18 adjacent the web outlet. The air distribution plate of the air outlet section is provided with a plurality of parallel, longitudinally extending partitions having variable position dampers therebetween for controlling the flow of air therethrough (Fig. 3, not shown). Thus the drying capacity of the unit may be varied.
Patent GB-454875-A (GB)
Title: Improved treatment of vegetable or artificial fibres
IPC: D06M15/423
Filed: 1935-04-11
Abstract: The crease-resisting properties of vegetable and artificial fibrous materials are improved by impregnating with a solution containing a compound capable of condensing with formaldehyde and a soluble compound capable of yielding formaldehyde, drying the material, and heating without addition of formaldehyde and in the absence of a catalyst, to form a synthetic resin.  In an example, a viscose material is treated with a 15 per cent solution of dimethylolurea, wrung out, dried, and heated in a boiler for about 2 hours at 120 DEG C.