baber/WOPTO huggingface dataset:
Patent GB-303152-A (GB)
Title: Improvements in or relating to the preparation of solutions or plastic masses
IPC: B01F23/30
Filed: 1928-12-14
Abstract: 303,152. British Celanese, Ltd., (Assignees of Crooks, W. E., and Walton, C. D.). Dec. 29, 1927, [Convention date]. Plastic compositions containing cellulose derivatives; indiarubber &c. compositions.-Homogeneous solutions or plastic masses are produced from solids by pretreating the solids before applying the main portion of the solvent or solute to be incorporated' with the solid, with a substance in the vapour phase, such substance being either a solvent or solute for the solid and being the same substance. as the solvent or solute subsequently to be incorporated or readily miscible therewith. Alternatively, the substance used for the pretreatment may be applied in solution in a liquid inert to the solid under treatment, the solution being of insufficient concentration to produce solution of the solid. A solute is defined as a substance which dissolves in the solid as is the case, for instance, with plasticizers and cellulose derivatives. When the solid is pretreated with the vapour of a solvent or solute, the vapour may be admixed with gases, which should be inert towards the solid and should not form an explosive mixture with the vapour; thus, air is preferred but may be replaced or diluted with other gases, such as nitrogen, carbon dioxide or hydrogen. The pretreatment process is particularly suitable for the preparation of solutions or plastic masses containing cellulose esters or ethers, for example cellulose nitrate, acetate, formate, propionate, butyrate and methyl, ethyl or benzyl celluloses but may also be employed for those containing rubber, resins or the like. Suitable substances for the pretreatment comprise .acetone, alcohol, ether and ethylene dichloride, but any other solvents or solutes may be employed. In an example, air dried acetone-soluble cellulose acetate is exposed to a current of air saturated with acetone until the acetate has absorbed acetone, to the extent of 20-25 per cent of its weight. The product, which still retains the appearance of cellulose acetate but is damp to the touch, is then mixed with sufficient liquid acetone to make a solution containing, for example, 25 per cent of cellulose acetate. This solution may be used for the preparation of artificial silk or any other suitable purpose. Instead of pretreating the solid with the vapour of the solvent, the solvent may be employed diluted with an inert liquid, for instance, in the pretreatment of cellulose acetate with acetone, the latter may be dissolved in benzene, which must be present in sufficient concentration that the acetate is not dissolved. The procedure may be modified in order to prepare highly concentrated solutions, pastes, gels or other plastic masses directly, by exposing the solid, for example cellulose acetate, to the solvent vapour, for instance acetone vapour, under conditions such that the solvent vapour is alternately heated and cooled or compressed and reduced so as to produce intermittent condensation of the vapour in the mass of material being treated.
Patent GB-1153895-A (GB)
Title: Improvements relating to Static Inverter Power Supplies
Inventor: PEDDER DONALD AUSTIN GRANT
IPC: H02M5/45
Filed: 1966-08-17
Abstract: 1,153,895. Control of A.C. motors. INDUSTRIAL INSTRUMENTS Ltd., and LAURENCE, SCOTT & ELECTROMOTORS Ltd. 11 Oct., 1967 [17 Aug., 1966], No. 36895/66. Heading H2J. A power supply circuit for an A.C. motor comprises an inverter 13 and a rectifier 21, signals representing respectively the switching frequency of the inverter, and the input voltage thereto from the rectifier, being compared to obtain a control signal. This signal controls the firing angle of the rectifier so that changes in the output frequency of the inverter are matched by corresponding changes in the input to the inverter, whereby the motor operates at at a steady torque. The inverter frequency is set by oscillator 10 which drives trigger and pulse distribution circuits 22 for a pair of primary switching thyristors. A converter 12 passes a voltage signal, proportional to the frequency, to a differential amplifier 11 which receives a second input from the D.C. line to the inverter. A signal which is proportional to the difference between the inputs is fed to a coincidence comparator 14 which also receives a ramp waveform signal from generator 15 driven by pulse generator 16. An output pulse is passed to stage 17 from the comparator 14 when the ramp voltage reaches the difference voltage. Inhibit signals along lines 18, 19 ensure that output pulses from the stage 17 to a firing circuit 20 are synchronized with the A.C. input to the rectifier circuit 21. The circuit 20 controls the point at which a thyristor in the rectifier circuit is fired and, hence, the level of the output voltage from the rectifier.
Patent GB-1485032-A (GB)
Title: Gas turbine engine casing
IPC: F01D25/24
Filed: 1974-08-23
Abstract: 1485032 Gas turbine engine casings; compressor casings ROLLS-ROYCE (1971) Ltd 7 Aug 1975 [23 Aug 1974] 37041/74 Headings F1C and F1T The invention relates to a casing such as the compressor casing of a gas turbine engine which comprises stator vane-carrying portions 14 and rotor blade tip surrounding portions 16, the assembly being surrounded by an outer layer of carbon fibre reinforced composite material 24 which comprises continuous carbon fibres wound therearound and embedded in a resin matrix which bonds the fibres to the wall. The vanecarrying portions 10 are formed of steel in the form of T-section rings which have undercut recesses 15 in which the roots of the stator vanes are received. Spacer rings 16 are disposed between the vane-carrying portions and in the assembly surround the tips of the rotor blades, the rings 16 engaging against the arms 12 of the T-section rings; the spacer rings are formed from lightweight carbon fibre reinforced plastic material. The parts are assembled on a mandrel and a continuous filament of carbon fibre wound over the assembly, resin being applied at the same time, the resin being subsequently cured. Fillets 26 are disposed in the corners before the carbon fibre is applied. The stator vanes are entered in a single cut-out in each ring, the final vane being secured by means of bolts; a bladed rotor disc is added after each stator vane row is completed. In Fig. 3 the inner wall 30 of the stator casing is formed as a single drum of metal or glass fibre reinforced composite material to define stator vane-receiving recesses 32 and rotor blade surrounding portions 34; the drum is formed at its outer surface with recesses 40 around the portions 34, these recesses being filled with a material such as honeycomb material 45 so as to form a smooth surface on which the carbon fibre 41 is wound. The stator vanes 38 are formed at the circumferential faces of their roots with flanges 52 which flanges engage recesses 50 in retaining plates 46, the plates 46 being secured to the casing by bolts 48.
Patent GB-1067272-A (GB)
Title: Photographic materials for transfer processes involving a heat-development and transfer step
Inventor: HAYDN HILDEGARD
IPC: G03C5/30
Filed: 1963-09-20
Abstract: Compounds of the general formula <FORM:1067272/C2/1> wherein X is -Oh or -NR2R3, R2 and R3 being hydrogen, alkyl, substituted alkyl or together forming a morpholino or pyrrolidino ring, Z is hydrogen, methyl, methoxy or ethoxy, and R1 has the values given below, are made as follows: (1) when R1 is benzenesulphonyl or p-toluenesulphonyl, by reacting benzene or p-toluene hydroxymethyl sulphone with p-aminophenol, N : N - diethyl - p - phenylene diamine, N - (4 - aminophenyl) - morpholine, N - ethyl - N - b  - hydroxyethyl - p - phenylene diamine or N-ethyl-N-b -methoxysulphonyl-aminoethyl - p - phenylene diamine; (2) when R1 is a -SO3Y group, where Y is hydrogen or a sodium ion, by reacting p-aminophenol, o- or m-methyl- or -methoxy-p-aminophenol, N : N-dimethyl- or -diethyl-p-phenylene diamine, o - methyl- or -ethoxy - p - diethylamino-aniline or p-pyrrolidinoaniline with sulphurous acid (or sodium bisulphite) and formaldehyde; (3) when R1 is the radical <FORM:1067272/C2/2> where R4 is ethyl, phenyl or hydroxyl and Z is hydrogen, by reacting benzene sulphonic acid anilide or ethylamide with p-aminophenol and formalin or by reacting o-toluene sulphhydroxamic acid with N : N-diethyl-p-phenylene diamine and formalin.
Patent GB-1365122-A (GB)
Title: Heavy duty resilient elastomeric bushing
IPC: B60G5/02
Filed: 1971-08-09
Abstract: 1365122 Tandem axle suspensions GENERAL TIRE & RUBBER CO 9 Aug 1971 [10 Aug 1970] 37390/71 Heading B7D [Also in Divisions  E2 and F2] In a resilient bushing, Fig. 4, in which a moulded elastomeric insert 36, e.g. of rubber, is radially compressed between two sleeves 32, 34 so that it is elongated by about 50% and occupies about 70-95% of the length of the short outer sleeve 34, there is a ring 40 on the inner sleeve 32 adjacent each end of the elastomeric insert 36; the rings are of material (such as nylon or polyurethane having a hardness of 95 Durometer (Shore A)) of greater abrasionresistance than the elastomer and are spaced from the outer sleeve as shown or from the inner sleeve. The rubber insert 36 may be adhesively bonded to one of the sleeves 32, 34. Instead of gripping the inner sleeve 32 as shown, the rings 40 may be press-fitted or cemented into the outer sleeve 34. The spacing of a ring 40 from the sleeve to which it is not attached is no more than twice the distance by which the sleeves approach one another under normal static radial load in use. Examples of bushing dimensions are given. Such bushings are inserted, e.g. press-fitted, into the middle eyes of equalizer beams 18a, 18b, Fig. 1, of a unit bearing two axles 2, 4 of a pair of lorry wheels 7, 9. The ends of the outer sleeves 32 are clamped in the ends of beamstraddling saddle portions of brackets 22a, 22b which support the lorry body. A tube 20 is inserted in the aligned inner tubes 32 of the two bushings between stops such as plugs 38 secured therein. Resilient bushings 16a, 16b in eyes at the ends of the beams 18a, 18b are held by bolts or pins in brackets 10a, 10b secured to the axles 2, 4.
Patent GB-326776-A (GB)
Title: Improvements relating to gramophones and the like
IPC: G11B17/16
Filed: 1928-12-18
Abstract: 326,776. Waring, L. J. Dec. 18, 1928. Returning sound-box to starting point; magazine gramophones.-A device for lifting and swinging a tone-arm to the starting point comprises cam mechanism mounted adjacent the periphery of the turntable B, a friction gear 22 mounted to swing about the said mechanism and to be brought into contact with the turntable periphery and thereby to drive the cam mechanism, and means for effecting the swinging movement of the gear 22, consisting of an abutment 34 operated by the tone-arm D after a predetermined travel of the latter. A plate 21, pivoted adjacent the tone-arm D as shown in Fig. 1, carries the friction gear 22 and associated gears 23--25 which drive a sun-wheel 26 rotatable on the pivot pin 20 of the plate 21, as shown in Figs. 4 and 6. Rotatable with the wheel 26 is a cam 27 arranged to act on a wiper 28 which is pivoted to a lever 29 turnable about the pin 20 and held in adjusted position by a stop engaging one of the openings in an arcuate plate 30. A lever 32 is pivoted on the head of a sleeve 31 rotatable on the pin 20, the lower end of the lever engaging the wiper 28 and the upper end being attached to a rod 34 which passes under the tone-arm D. An inclined cam surface 35 is provided on the sun-wheel 26 and the latter, together with its associated mechanism, is enclosed by a dome 36 and base 37a. When a wiper d on the tone-arm D encounters a projecting pin 21<b> on an arm 21a, which extends from the plate 21 and is set in a predetermined position as shown in Fig. 1, the latter swings so as to cause the disc 22 to engage the turntable, and the sun-wheel 26 and cam 27 are caused to rotate. The wiper 28 then presses the end of the lever 32 radially outwards in to the path of the cam 35 and lifts the tone-arm D from the record. The tone-arm D is swung outwardly by the engagement of the cam surface 35 with the lever 32. During the latter portion of the swinging movement, the tone-arm D contacts with a depending rod 17, Figs. 1 and 2, which turns a shaft 13 so that, through the medium of a pawl 14, a ratchet 15 is moved one tooth forward to release a finger 5 supporting the lowermost record in a magazine, and this record falls into playing position. At the same time, the lever 32 is moved radially outwards by the cam 27 so as to clear the cam surface 35 and enable it to swing back under the weight of the tone-arm D until the end of the lever engages a stop 37 on the inside of the dome 36. The lever 32 then moves inwards and the tone-arm is lowered to allow the stylus to engage the record. The plate 21 then swings so as to release the gear 22 from engagement with the turntable. The magazine consists of a bracket 1 hinged at 9 and a pair of telescopic plates 2, 3, and the fingers 5 are carried by the plate 3. The records A are mounted on a bent central pin 6 having its lower end coaxial with the turntable spindle C. If desired, the mechanism may be used so as to repeat a single record. The lever 29 enables the repeating device to be set according to the size of the record employed.
Patent GB-323628-A (GB)
Title: Improvements in centrifugal governor mechanism
IPC: G05D13/08
Filed: 1928-12-19
Abstract: 323,628. Robertson, J. H. Dec. 19, 1928. Centrifugal governors; transmitting - mechanism.- A centrifugal governor mechanism comprising a casing or disc secured upon a rotary shaft, a sleeve mounted coaxially on the shaft, a toothed pinion secured to the sleeve and a plurality of sectorshaped levers pivoted' upon the disc, each of the levers being weighted eccentrically so as to act as a governor weight and having a toothed segment meshing with the .central pinion so that the pivotal movement of the levers under centrifugal force produces a rotary movement of the sleeve in relation to the shaft. Relative rotation is converted into axial displacement of a slidable member as by cams or grooves cooperating with studs or rollers. Upon a shaft a is mounted freely a pinion g which meshes with sector pinions c<1> on eccentrically mounted weights c which are pivoted at d to a disc b on the shaft. Movement of the weights under centrifugal force against the action of springs e results in rotation of the pinion g and the extension cam surfaces h thereof by contact with rollers i on studs provides an axial movement of a sleeve k to which is secured the disc l of a variable speed friction gear. The sleeve k has a splined connection at k<2> with splined grooves on the guide b' secured to the disc b. In an alternative construction the rollers i are carried directly on a sleeve having the splined drive and abut directly upon a ring which bears against the driving disc l. In this case the action is under the constraint of a coaxial spring.
Patent GB-902604-A (GB)
Title: An improved process and apparatus for condensing vapours and cooling the condensate
IPC: B01D5/00
Filed: 1958-11-21
Abstract: Vapours from a basic plant, e.g. a distillation column, pass through pipe 10A into the tubes of an air-cooled condenser 11, the mixture of condensate, uncondensed vapours and gases enters pipe 12 and the condensate flows down into separator 13; part of this warm condensate is returned to the basic plant through conduit 18 and the remainder is passed through the tubes of an air-cooled cooler 19; some of the cooled condensate is returned to the basic plant through conduit 22, and the remainder is collected in reservoir 20.  The two streams of condensate from conduits 18 and 22 are mixed in pipe 10B for return to the basic plant.  The amount and temperature of the condensate delivered to the basic plant is controlled by valves 17, 21 and 23. Uncondensed vapours and gases flow back through pipe 14, rise through condenser 15, and residual gases are vented through valve 28. Condenser <PICT:0902604/III/1> <PICT:0902604/III/2> 11, cooler 19 and reflux condenser 15 are all arranged in a vertical plane in an air-duct 35, which contains a screw-fan 37. This fan blows air towards the condensers and the cooler 19.  Part of the air blown through duct 35 can be diverted to the atmosphere by adjustable baffle 38; but this baffle is arranged so that the reflux condenser is exposed to the full volume of applied air. The cooling air is deflected over the condenser and the cooler by baffles 40 and 41, respectively.  The flow of air over the cooler is regulated by louvre 42.
Patent GB-523341-A (GB)
Title: Improvements in or relating to traction devices for tractor wheels provided with tyres
IPC: B60C27/04
Filed: 1938-12-31
Abstract: 523,341. Endless-tracks for vehicles. MEILI, E. Dec. 31, 1938, No. 37992. Convention date, Dec. 31, 1937. [Class 79 (i)] [Also in Group XXXIV] A traction-device comprises a series of groundengaging shoes 6 carried by rings 7a, 7i arranged at the sides of the tyre 5 and movable into an eccentric (operative) position relative to the wheel, or into concentric (inoperative) position to permit the tyre to engage the road directly through a gap obtained by removal of a sectorpiece S from the device. In the operative position, driving-lugs 16 on the ring 7a engage lugs 17 on a ring 15 secured to the wheel in the lower run of the latter. For adjusting the position of the device, a ring 9 on the vehicle framing R is fitted with rollers 12, 13 tracking the ring 7i. The lower roller 13 is carried by a rocker-arm 11 operated, through the rod 11a, from the driver's seat.
Patent GB-1397780-A (GB)
Title: Electrical control systems
IPC: G05F1/56
Filed: 1972-08-16
Abstract: 1397780 Controlling D.C, motors; converting MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 16 Aug 1972 [19 Aug 1971] 38110/72 Headings H2J and H2F A D.C. load is supplied by an A.C. source over a rectifier bridge and a series-connected controlled rectifier. A reactor which is preferably saturable is connected on the A.C. side of the bridge and ensures reliable turn-off of the controlled rectifier. As shown, the field winding 6 of a shunt wound D.C. motor is connected across the output terminals of a rectifier bridge 2-5. The current supplied to the motor armature 8 is controlled by an SCR 7, and a diode 9 is reverse connected across the armature. Saturable reactor 10 is suitably dimensioned to ensure sufficient turn-off time for the SCR 7 between successive half-cycles of A.C. source 1. The armature 8 may be replaced by an inductive or resistive load.
Patent GB-1242389-A (GB)
Title: Air diffuser
Inventor: GRANT RAYMOND PATRICK
IPC: F24F13/062
Filed: 1967-08-21
Abstract: 1,242,389. Ventilators. GENERAL AIR DIFFUSERS CO. Ltd. 15 Nov., 1968 [21 Aug., 1967], No. 38336/67. Heading F4V. An air diffuser comprises an element 2 which is axially movable relative to a fixed element 1 through stays 4 which are biased against the edges of corresponding holes 5 in the element 1 by leaf springs 6. Each stay 4 includes grooves 8 which engage the corresponding hole 5 and is released for axial movement by rotation of the element 2 against the action of the springs 6. The springs 6 may have covers to serve as guides for the stays 4 and as stops for the outer edges of the springs. The diffuser may include more than two elements 1, 2 of which any or all of the inner or intermediate elements may be adjustable as described above.
Patent GB-1427248-A (GB)
Title: Plastics-sheet articles stack and dispendsing pack
IPC: B65D83/08
Filed: 1973-08-14
Abstract: 1427248 Packing plastics sheet articles BRITISH VISQUEEN Ltd 18 July 1974 [14 Aug 1973] 38408/73 Heading B8C A folded stack, e.g. of plastics bags for dispensing from a satchel, Figs. 2-3 (not shown), is first folded in zig-zag fashion into three substantially equal panels, and is then folded substantially in half at right angles to the initial fold lines. The stack may be inserted into a carton (20), Fig. 10 (not shown). The stack is initially inserted between an upper shaft 10 and a lower shaft 11 connected by a rod 12, so that rotation of the shaft 11 about the shaft 10 to the position of Fig. 8 effects the initial folding. A member 17, Fig. 9, then presses the folded stack between plates 15, 16 of a magazine to effect the second folding action.
Patent GB-995774-A (GB)
Title: Transistorised blocking oscillator
IPC: H03K3/30
Filed: 1962-10-11
Abstract: 995,774. Transistor blocking oscillators. STANDARD TELEPHONES & CABLES Ltd. Oct. 11, 1962, No. 38578/62. Heading H3T. A transistorized blocking oscillator has an auxiliary negative feedback path via a transformer. As shown, the transistor Tr1 has regenerative feedback via windings N1, N2 of a transformer K1 having a rectangular hysteresis loop. The auxiliary transformer K2 is normally biased by current via R2 to a point c of the magnetization curve shown in Fig. 3, whilst K1 is biased by current via R6 to point a. Tr1 is turned on by a negative pulse via Cl and D1, positive feedback via windings N1, N2 tending to bottom the collector current. When a point a is reached on the magnetization curve of K2, further rise is prevented by negative feedback via K2 and D3. Capacitor C2 is charged by the net feedback current. The output pulse is fed via D2 to a load RL and is terminated by regenerative action when the collector current begins to fall. The invention reduces the effect of base charge storage and makes the output pulse less dependent on supply voltages and transistor characteristics.
Patent GB-1153926-A (GB)
Title: Method For Controlling The Drying Steps On Continuous Sheets Of Material
IPC: F26B25/22
Filed: 1967-08-22
Abstract: 1,153,926. Drying. ZELLWEGER A.G. APPARATE-UND MASCHINENFABRIKEN USTER. 22 Aug., 1967 [23 Aug., 1966], No. 38625/67. Heading F4G. A method of drying continuous lengths of material (e.g. material treated with chemicals) such that the material has a predetermined moisture content and/or temperature after it has passed at constant speed through a drying machine of constant heat input, comprises sensing the moisture content and/or temperature of the material at the discharge end of the drying machine and applying to the material, prior to drying, a quantity of water or steam in accordance with said sensed value or values such that the dried material has the desired moisture content and/or temperature. The material may be treated such that different lengthwise zones thereof have different desired moisture contents and/or temperatures. The drying machine may comprise tenter frames, jet dryers, infra-red dryers or cylinder dryers. The water may be applied by spraying or rolling. The material may be a woven or knitted fabric, a fleece, a plastic film or paper. As shown, the material a is treated with liquor b (e.g. containing chemicals), pressed by padding machine c, treated with water by roll e and dried in zone g. The moisture content or the temperature of the material is measured by instrument h which controls an instrument f for varying the speed of roll e to regulate the amount of water being applied to the material in accordance with the value sensed by instrument h. In a modification, the water applying roll may comprise two parts, each independently rotatable and controlled by its associated sensing or measuring means such that two lengthwise zones of the dried material may have different moisture contents and/or temperatures.