baber/WOPTO huggingface dataset:
Patent GB-1319978-A (GB)
Title: Control of a direct current motor
IPC: B66C13/24
Filed: 1970-06-22
Abstract: 1319978 Control of speed SIEMENS AG 22 June 1970 [20 June 1969] 30256/70 Heading G3R [Also in Division H2] The speed of a D.C. separately excited motor 1 with reversible armature current is controlled by means of a controller 8, which receives signals representing the desired speed from desired value source 9, actual speed from tachogenerator 11, and a signal representing the difference between the actual motor torque, and the rated motor torque ML N , from comparison device 19, fed to the controller via amplifier-memory unit 20, whose output is limited so that the armature current does not exceed its rated value excessively. An amplifier 18 receives as inputs, a signal representing the actual motor speed and a signal corresponding to either the armature current, derived from current transformer 5, or the product of the armature current and the field flux, derived in unit 26, and outputs to the device 19 the signal representing the actual motor torque. Control unit 23, controlled by analogue AND gate 25 whose AND condition is satisfied when lever 10 is set to full rated speed and the actual motor speed is above a given proportion of the rated speed, the proportion being defined by boundary value unit 24, ensures that the memory unit 20 receives an input only after the proportion is reached, and not during changeover of armature connections, the switch 22 being actuated in dependence on motor speed. An output from command stage 6 ensures that the signals from units 18, 19 are unidirectional in character. Control of armature current A thyristor power stage 2 feeds the armature via reversing switches 12a, 12b, and is controlled, via a control set 3, by an armature current controller receiving signals representing the desired motor speed, both directly and via a balancing amplifier 7, the actual armature current from transformer 5, and a command stage 6 controlling direction of rotation. Control of field current Field current controller 12 receives as inputs, signals representing the desired field current, from unit 17, the armature voltage, and the actual field current, derived from current transformer 16, and controls thyristor power stage 14 via control set 13. It is stated that field flux is maintained constant until the rated armature voltage is reached, and then the field flux is decreased keeping the armature voltage constant. The motor may be used in a crane hoist, and, in the event of overspeed, the motor functions as a generator.
Patent GB-961716-A (GB)
Title: Apparatus and method for forming and applying strand reinforcement and product produced thereby
Inventor: HAVEMANN ROBERT ADDISON
IPC: B32B27/00
Filed: 1960-09-05
Abstract: 961,716. Laminates and laminating. ST. REGIS PAPER CO. Sept. 5, 1960, No. 30576/60. Heading B5N. [Also in Division D1] Strand reinforcement is formed by winding continuous lengths of strand material into continuous convolutions, gripping each convolution at pairs of spaced-apart points on opposite sides of the convolution, severing the convolutions between the spaced-apart points to divide each convolution into strand lengths, advancing these lengths along a path, feeding them into contact with additional lengths of strand material at an angle thereto or with web or sheet material or both, and bonding the contacting materials together. As shown, strand material from the bobbins 4a mounted on the spinning rings 1 is wound round the conveyer belts 5, 5a, 6 and 6a which carry it upwards (as seen in Fig. 1) to the rolls 17 and 18 which press cables 15 and 16 into grooves in the belts to grip the strand material. The strand material then advances to a station where each convolution is slit by cutters driven by the motor 21, one acting between the belts 5 and 6, the other between belts 5a and 6a (Fig. 4, not shown), to sever each convolution into two strand lengths each gripped at two points near its ends. The belts then pass over sheaves 23 which separate them to provide separate flights of parallel strands. Another set of parallel strands, extending in the direction of movement of these flights is introduced between them by diagonally disposed guide bars (one shown at 26), and coated with adhesive by the applicator 38. Two webs 32 and 33 are coated with adhesive by the devices 35, and all five layers then laminated between the rolls 30. The cables are released from the belts by the stripper wheels 36, and the product taken round roller 37 to be wound up. In modifications (not shown) the strand lengths are bonded only to a set of longitudinal strands to form an openmesh fabric that may be collected for subsequent use; the angle between the strand lengths and the longitudinal strands is adjusted by raising or lowering sheave 23 on one side of the apparatus to lengthen or shorten the path of one end of the strand lengths between the point where they are severed and that where they are bonded to the other layers; additional longitudinal strands are applied to lie outside the layers of strand lengths; adhesive is applied to the strand lengths before they are bonded to the other layers; the strands are bonded by spraying adhesive on to them after they have been brought together; and the longitudinal and transverse strands are secured to one surface of a single web or sheet of light-weight flexible material. The strands may be of glass fibre, nylon, rayon, cotton or wool and may be multi- or mono-filament, twisted, spun or unspun. The web or sheet material may be cloth, paper (plain, creped or embossed), film or foil. The adhesive may be an emulsion, a plastisol, an organosol, polyethylene or polyvinyl acetate. Specification 867,236 is referred to.
Patent GB-807993-A (GB)
Title: Improvements in and relating to the measurement of moisture content of granular materials
Inventor: OXLEY THOMAS ALAN
IPC: G01N27/04
Filed: 1954-10-23
Abstract: 807,993. Testing moisture-content of grain. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Oct. 24, 1955 [Oct. 23, 1954], No. 30592/54. Class 58. [Also in Group XXXVI] A probing device is inserted in grain in bulk to provide electrical paths therein the resistance of which can be measured to determine the moisture content. The probe has at least four parallel electrodes divided into two groups of opposite polarity so that there are at least twice as many direct paths through the suple as there are electrodes of one polarity. In the arrangement shown nine electrodes of chromium plated or stainless steel are arranged in the form of a square, the centre 12 and comer electrodes 14 being of one polarity and the electrodes at the centre of the sides 13 of another. The electrodes are pointed to enable them to penetrate in group. To prevent moisture content of the sacking affecting the measurement, the ends of the electrodes are covered with insulation 17 which merges into the contour of the electrodes. A handle 27 is provided and inside housing 11 is a switch 24 which, when open, connects only one electrode 12 and one electrode 13. An alternating or D.C. supply may be used, the latter being derived from a hand-operated generator. The moisture content may be read on a suitably calibrated meter.
Patent GB-392150-A (GB)
Title: Carburettor
IPC: F02M9/127
Filed: 1931-11-06
Abstract: 392,150. Spray carburetters. SCHNEEBELI, H., 11, Rue de Becon, Courbessie, Seine, France. Nov. 6, 1931, No. 30775. Convention date, Nov. 7, 1930. [Class 7 (iii).] In a carburetter without constant level chamber, and having the features described in Specification 344,004, fuel entering at 4, Fig. 2, passes valves 5, 13 and through a number of orifices 21 to a chamber 22 where it is atomized by air drawn through a pipe 29, the resulting rich mixture passing through a tube 32, Fig. 4, and being diluted with air entering at 42, 38, 37, after which it passes through apertures 35, 36 and 48 .. 51 to the main suction passage where it is further diluted with air entering through ports 34 controlled by a suction-actuated sleeve 52. The fuel flow is controlled by the needle valve 5, Fig. 2, adjustably screwed into a sleeve 6 which can be moved axially by a spring-loaded lever 17, the end 13 of the sleeve serving as a cut-off device for the fuel. The needle valve is rotated by a knob 7, and can be locked by a pin 8 engaging notches 9 in the head of a nut 10 screw-threaded over the fixed body portion 1, and connected by a key 12 to the sleeve 6 a flange 15 on which is pressed by spring 16 against the nut. During running, the nut 10 can be rotated through an arm 66 to vary the fuel flow. The air which passes through the pipe 29 and apertures 27, 26 to atomize the fuel in chamber 22 is admitted through apertures 31, Fig. 4, at the upper end of a chamber 30. At the upper end of the carburetter body is a fixed sleeve 43, Fig. 4, the outer surface of which has annular grooves which form with the body, chambers 46, 47 having apertures 48, 49, the fixed sleeve being also provided with the small orifices 50, 51. Inside the fixed sleeve 43 slides the upper end of a spring-loaded sleeve 52, the lower end of which is flared, is adapted to control extra-air ports 34 and, when at its lowest position, rests on a fibre washer 54. The internal crosssection of sleeve 52 is adapted to be varied by a valve 56 actuated by a rack 59 and sector 60, and provided at its lower end with a piston 58 adapted to balance the effect of suction on the valve. This valve is actuated through a bell-crank lever 68, Figs. 1, 2, link 65 and bellcrank 63, the other arm 62 of which is connected through link 64 to the arm 66 on the nut 10. The chamber containing the loading spring of the sleeve 52 is in communication with the air passage through an aperture 71. Exhaust gases may be admitted to an annular chamber 72 to prevent the formation of hoar frost and consequent jamming of the sleeve 52. The rich mixture which passes through tube 32 is, as explained above, diluted with air entering through nozzles 42, 38, 37, and is then delivered into the main air stream through apertures 35, 36, 48, 50, 51 and, when sleeve 52 is in its highest position, through aperture 49 uncovered by aperture 55 in the sleeve 52.
Patent GB-1494653-A (GB)
Title: Charge coupled devices
IPC: H01L27/148
Filed: 1975-07-23
Abstract: 1494653 Semi-conductor devices GENERAL ELECTRIC CO Ltd 7 June 1976 [23 July 1975] 30794/75 Heading H1K In an optical imaging CCD, comprising an array of electrodes 3 on one surface of a semiconductor substrate 1, the other substrate surface has a recess 5 below the array of electrodes 3, and the substrate 1 is secured to a support 8 in register with an opening in the support through which light reaches the substrate. The support 8 may be an integrated circuit package, connected to the CCD via leads 10, and secured to the substrate 1 by a layer of high temperature epoxy resin 7. The integrated circuit may also have a number of lead-out conductors which act as connectors to a further circuit, or which act to support the device on a further apertured carrier.
Patent GB-1116806-A (GB)
Title: Launching apparatus for aircraft
IPC: B64F1/06
Filed: 1965-07-20
Abstract: 1,116,806. Launching aircraft. KLÍCKNERHUMBOLDT-DEUTZ A.G. 20 July, 1965 [8 Aug., 1964], No. 30830/65. Heading B7G. Aircraft launching apparatus comprises an endless belt or cable 3, to which the aircraft is attached, passing over drums 1, 2, one of which is driven by an hydraulic turbine 5 supplied with water stored under pressure. The water may be supplied by gravity from a tank above the container or as shown may be stored in a tank 6 pressurized by compressed air from air bottles 10-12 and a compressor 14. The water leaving the turbine flows into a further container 7 and is later pumped back into the container 6. Alternatively, the further container may be adapted to be pressurized, water passing from the further container via the turbine to the first container during the next launch. The source of pressure may, instead of compressed air, be produced by igniting a cartridge, or boiling a liquid.
Patent GB-536831-A (GB)
Title: Improvements in drawing materials, methods of utilizing the same and a process for preparing them
IPC: G03F1/00
Filed: 1939-11-27
Abstract: 536,831. Pictures. SANDERS, L. S. Nov. 27, 1939, No. 30901. Convention date, Dec. 1, 1938. Drawings to Specification. [Class 11] [Also in Group XX] Drawing material suitable for the production of representations for use as camera copy comprises a transparent or opaque support, a chemically developable layer, a thin transparent or translucent gum or resin layer soluble in or penetrable by the developer, and a coating of transparent or translucent material insoluble in and penetrable by the developer on the film and having a multiplicity of spaced openings. A dull surface transparent or translucent coating insoluble in but penetrable by the developer may be provided. In an example, a suspension of mercurous chloride in gelatine containing also sodium metatungstate and formaldehyde is applied to a paper support. A thin film of gum or resinous material is applied, the gum being benzoin, ammoniac, sandarac, galbanum, olibanum. mastic, copal and dammer. A varnish film insoluble in and impenetrable by the developer is applied by printing to leave the small spaced openings. The surface coating comprises either (a) an aqueous-alcoholic solution of gum mastic and gum dammer, (b) an aqueous-alcoholic solution of cherry gum and gum galbanum or (c) an aqueous solution of albumen followed by after-treatment with sorbitol. The cherry gum may be replaced by other water soluble substances. The developers are applied with a brush by an artist. The slow developer employed first comprises an aqueous solution of thiourea and sodium sulphate. The fast developer comprises an aqueous solution of thiourea, ethylenediamine, phenolphthalein (or o-cresolphthalein) and urea, to which has been added a small quantity of alcoholic shellac solution. The solution is coloured a dark red which disappears on drying. The ethylenediamine may be replaced by alkali hydroxides or salts, ammonia, propylenediamine, monoethenolamine, benzylamine, or piperidine. The developable substance may comprise silver chloride which is developable by reducing agents or amines. A silver chloride, bromide, or iodide photographic printing paper may be exposed, photographically developed and fixed and bleached in mercuric chloride solution to give suitable developable material. Material having a transparent support may be used for tracing particularly for use in the production of colour plates, or when developed may be used as photographic negatives. Specification 522,782, [Group XXXV], is referred to.
Patent GB-1150733-A (GB)
Title: Method of Mounting Shanked Tools and Shanked Tools so Mounted
Inventor: GLOSSOP MARK BARNES
IPC: E21C35/19
Filed: 1965-07-20
Abstract: 1,150,733. Cotters. AUSTIN HOY & CO. Ltd. 19 July, 1966 [20 July, 1965], No. 30912/65. Heading F2H. [Also in Divisions E1 and E2] In the securing of a shanked tool in a holder a shoulder 1c between the head 1b and the shank 1a of the tool 1 is biased against the holder 2 after the shank has been entered into the holder. The biasing is caused by the insertion of a pin 5 into aligned bores 3 and 4 in the holder and shank, the pin so co-operating with the shank and holder as to form a resilient connection therebetween whilst positively retaining the shank in the holder. Preferably the pin causes compression of an elastic insert 6 in the lower portion of the bore 4 in the shank.
Patent GB-520640-A (GB)
Title: Improvements in and relating to yarn and fabric in which such yarn is incorporated
IPC: D02G3/32
Filed: 1938-10-26
Abstract: 520,640. Elastic yarns. LASTEX YARN & LACTRON THREAD, Ltd., JAMES, R. G., and HEALEY, J. G. Oct. 26, 1938, Nos. 30955/38 and 1875/39. [Class 120 (iii)] A yarn comprises a rubber thread covered while under tension with a wrapping of textile thread or artificial silk to produce elastic yarn, then a textile or other inelastic thread is associated with the unstretched elastic yarn; the combination can then be incorporated in a fabric. After the tensioned rubber thread has been wrapped, the recovery or shrinkage of the elastic yarn may be effected by dipping. hanks of it in hot water which preferably contains a wetting agent such as potassium oleate, sulphonated castor oil, or the substance known under the Registered Trade Mark "Nekal" B.X. The inelastic thread may be wrapped in an open spiral round the unstretched elastic thread or the two may be twisted or doubled together, or the two may be linked together by an adhesive, or by a binding thread wrapped round both. After the combination of elastic yarn and inelastic thread has been woven into the fabric, the inelastic thread is destroyed or rendered inoperative by treatment with an agent in which it is soluble.
Patent GB-384414-A (GB)
Title: Improvements relating to spools and more particularly to a method of winding thread t
IPC: B65H54/10
Filed: 1931-11-07
Abstract: 384,414. Holders for spools of thread. WAGNER, J. P. and WAGNER & BRANDON, Ltd., 54, Aldermanbury, London. Nov. 7, 1931, No. 30963. [Class 18.] A spool of thread for use in attaching bias binding or other trimming to clothing wherein the thread is wound in two readily separable spaced apart sections is combined with a card 6 for carrying the binding or trimming by being mounted on projections 7, 8 formed at the ends of a recess 9 in the card. The recess may be, as shown, at the edge of the card or may be formed as an orifice in the body of the card.
Patent GB-618694-A (GB)
Title: Improvements in or relating to adjustable electric inductance coils
IPC: H01F17/04
Filed: 1946-10-18
Abstract: 618,694. Inductances. STANDARD TELEPHONES & CABLES, Ltd., GLOVER, W. F., ROSEWAY, W. N., and GILES, F. E. Oct. 18, 1946, No. 31052. [Class 38 (ii)] An inductance element comprises two hollow core members 3, 4, of magnetic material, arranged to form a box so as to enclose an inductive coil 7 fixed to one of the hollow members, means being provided to adjust the distance between the hollow members in order to vary the inductance of the coil. In a preferred embodiment the adjusting means comprise a number of screws 11 and nuts 16, fine, or trimming, adjustments being possible by using the centrally placed screw and nut only. The hollow members are fixed in recesses in insulating, e.g. ceramic, plates 1, 2, and the coil may be wound in sections or comprise more than one winding so that it may operate as a variable mutual inductance, or a winding may be fixed in each hollow member in order to provide a variable inductance for an electrically balanced circuit. Another embodiment is shown in Fig. 5 wherein the distance between the members is altered by means of a screw plug 21.
Patent GB-798414-A (GB)
Title: Improvements in control mechanism for hydraulically operated equipment
IPC: B66F3/24
Filed: 1954-10-28
Abstract: 798,414. Hydraulic pit props. HUNT & MITTON, Ltd., and JAGER, E. G. Oct. 21, 1955 [Oct. 28, 1954], No. 31100/54. Class 20(2) [Also in Groups XXIX and XXX] A valve assembly for controlling the operation in sequence of a plurality of hydraulic pit props 11 for supporting a coal-mine roof adjacent to a coal-cutting machine and moving a conveyer belt 12 and moving themselves, comprises a number of piston valves 30 operated by cams 40 on a. shaft 39, the heads of the valves being exposed to the pressure in the inlet manifold 18 to hold them against the cams. The valve units 15, 16 are connected to opposite sides of double-acting horizontal rams 50, 50a, Fig. 3 connected to the conveyer belt 12 and the unit 17 with the lower ends of single-acting pit-props 11. In operation, to move the equipment sideways, the shaft 39 is first rotated to a position to move the cam associated with the valve unit 17 so that this valve is urged upwardly by inlet pressure to connect the inlet manifold 18 to the lower ends of the pit props 11, which then move upwardly to support the roof. The shaft 39 is then rotated so that the valve unit 16 moves to supply pressure liquid to extend the rams 50, 50a to move the conveyer belt sideways. Then the shaft 39 is next rotated to a position in which the unit 17 connects the pit props 11 to exhaust, which then fall under gravity and finally to a position to .operate the valve unit 15 to retract the rams 50, 50a. Since the units on which the pit props 11 are mounted are lighter in weight than the conveyer belt and provided with suitable skids these units will on retraction of the rams 50, 50a move towards the conveyer belt. A non-return valve 53 may be fitted in the line between the unit 17 and the pit props 11 to prevent return flow in the event of excessive roof pressure. In these circumstances a spring- loaded, loose-ball valve 43 is fitted, the valve being unseated by means of a cam 44, roller 34a and a rod 57 to connect the pit props 11 to exhaust to enable them to be lowered.
Patent GB-914975-A (GB)
Title: Improvements in closures
Inventor: NICOLSON WILLIAM HUGH
IPC: F02K9/00
Filed: 1960-09-09
Abstract: 914,975. Self-propelled missiles. IMPERIAL CHEMICAL INDUSTRIES Ltd. Aug. 23, 1961 [Sept. 9, 1960], No. 31121/60. Classes 9 (1) and 9 (2). [Also in Group XXV] A device for insertion into a passageway designed for the reception of a primer in a rocket motor, the device being used to detect if the primer has been correctly fitted, comprises a body 1, a bolt 8 displaceable radially of the body, a control knob 3 fixed to a spindle 2 having a cam surface 7 which engages a ball 10 to operate the bolt against the bias of the spring 9 and a spring-loaded detector probe 15 having a shoulder 14 adapted to engage in a recess 17 of a flange 5 fixed to the spindle. In operation the knob is turned against the bias of a spring 11 to bring the recess 17 opposite the shoulder 14 which moves into the recess to hold the spindle against rotation. In this position the cam surface 7 allows spring 9 to retract the bolt 8. The device is then pushed into the passageway until the detector probe is moved to release the spindle which therefore turns to operate the bolt. A device for indicating the position of the bolt may be incorporated.
Patent GB-1386883-A (GB)
Title: Process for the production of propionic acid
IPC: B01D1/00
Filed: 1972-07-04
Abstract: 1386883 Propionic acid BADISCHE  ANILIN- & SODA-FABRIK AG 4 July 1972 [5 July 1971] 31234/72 Heading C2C In the preparation of propionic acid by reacting ethylene with carbon monoxide and water in the presence of a nickel carbonyl complex at 250-320 C. in liquid phase at 100 to 300 atmospheres in a vertical cylindrical reaction zone, a gaseous zone is maintained at the upper end of the reactor and a second zone is provided at the lower end. The second zone communicates with the reaction zone over an area less than the total area of the crosssection of the reaction zone. Reaction zones with length/diameter ratio of 10 : 1 to 20 : 1 are used and the second zone preferably occupies from one hundredth to one three-hundredth part of the reaction zone, and the cross-sectional area in communication with the reaction zone is from 1 to 5% of the reaction zone, an annular gap being particularly suitable. An example describes an apparatus (Figure) with high pressure tube 1 lined with silver, and with stainless steel covers 2 and 3. A silver plate 4, 60 mm. above the lower cover forms a second zone, with a gap of 5 mm. between the periphery and the wall of the reactor. A circulation tube 5 and an impulse exchange tube 6 are connected to the ethylene and carbon monoxide supply pipe 8.