baber/WOPTO huggingface dataset:
Patent GB-1070947-A (GB)
Title: Improvements in or relating to laser systems
IPC: H01S3/06
Filed: 1964-08-04
Abstract: 1,070,947. Lasers. AMERICAN OPTICAL CO. Aug. 4, 1964 [Aug. 5, 1963], No. 30426/64. Heading H1C. In an optically pumped laser the elongated solid active medium is surrounded by a cladding having a refractive index equal to or lower than that of the active medium and being such as to transmit energy at the optical pumping frequency and absorb optical energy at the laser emission frequency. A laser (10), Fig. 1 (not shown), comprises an elongated straight-sided cylindrical-shaped solid active medium (12) of neodymium-doped barium crown glass having flat end faces (16), (18) coated with reflective coatings (22). Surrounding the member (12) is a selectively absorbing cladding (20) of ferrous iron containing alumina-phosphate glass having a refractive index substantially the same as the active medium and containing an absorptive material to provide high transmission of optical energy at pumping wavelengths and at the same time high absorption at the 1.06 micron emission wavelengths of the laser. Thus, pumping optical energy at this wavelength and spontaneous emission which strikes the interface (26) will be absorbed and secondary emission will be avoided, photons travelling in the longitudinal direction being the only ones allowed. The cladding (20) also serves the purpose of optically immersing the laser and providing a gain in the pumping light density. The glass cladding may be soda-lime crown glass containing samarium trioxide or barium crown glass containing dysprosium. Other glasses which may be used as the laser active material are tri-valent ytterbium-doped glass and tri-valent hobnium-doped glass. Ruby may be clad with blue sapphire. The laser active material may be clad with a double layer, Fig. 3 (not shown), and Fig. 7 in which arrangement the active medium 62 is curved longitudinally and is provided with first and second cladding layers 64, 66 having equal refractive indices n 2 , n 3  which are slightly less than that of core 62, n 1 . The ray 67 will thus travel down the core 62 by internal reflection whereas rays 68 pass through layer 64 into layer 66 where they are absorbed. This arrangement may be used in a helically coiled travelling-wave type of amplifier (63), Fig. 6 (not shown), in which a double clad fibre component (60) is wound in helical form around drum (74) in the centre of which are positioned one or a plurality of pumping light sources (78). A reflective housing may encircle the drum. In Fig. 4 (not shown), a hollow cylindrically shaped laser member (84) is provided with absorbing layers (86), (88) on its inside and outside surfaces and within and around the laser member are disposed a plurality of light pumping sources (85), (87) and a cylindrical member (94) provided with reflecting layer (96). In Fig. 2 (not shown) the ends of the laser body are arranged at an angle # to the longitudinal axis of the body so that no light within the member (50), (51) will be internally reflected back along the length of the laser member but will be absorbed by cladding (52).
Patent GB-537422-A (GB)
Title: Improvements in life-saving apparel
IPC: B63C9/125
Filed: 1939-11-20
Abstract: 537,422. Life-saving garments. BERNARD & SONS, Ltd.,C. H., and BERNARD, T. H. F. Nov. 20, 1939, No. 30440. [Class 141] A life-saving waistcoat, a, jacket &c. is provided beneath its lining with two rubber or other inflatable bags b, c adapted, in wear, to lie upon the chest, the bags being connected by an inflatable tube passing round the back of the garment and one of them, b, being provided with a valved inflating tube e which is normally passed through one of the pockets or a portion divided from one of the pockets. A strap and buckle g, h assists in holding the device in place.
Patent GB-505202-A (GB)
Title: Improvements in or connected with stowing tanks in aircraft wings
IPC: B64D37/04
Filed: 1937-11-06
Abstract: 505,202. Disposition and mounting of tanks in aircraft parts. VICKERS (AVIATION), Ltd., and WALLIS, B. N. Nov. 6, 1937, No. 30483. [Class 4] In means for stowing a tank or tanks in a wing or wing part which is removable from the body, stub wing or fixed wing part, devices are provided in the removable wing or part and on the tank or tanks to enable the tank or tanks to be slidden into or out of the removable wing or part when the latter is detached. As shown, the outboard portion a of the wing is removable from the stub wing b, carrying a nacelle c, and is of stressed-skin construction comprising a main spar d, d<1>, d<2> and upper and lower geodetic members e, e<1>. Tanks g, g<1>, g<2> arranged in tandem and interconnected by frames h, h<1> and similar tanks g<3>, g<4>, g<5> are provided with guides g<6>, g<7> by means of which, when the wing portion a is removed, they can be slid along wooden runners f, f<1> and f<2>, f<3> supported by the members e<1>. The tanks g<2>, g<5> are provided with spikes g<@> which engage holes a<1> in a bulkhead a<2> when the tanks are in the stowed position. The tanks g, g<3> are provided with spikes g<9> which engage holes in the wall c<1> of the nacelle c when the wing portion a is replaced. The lower end of each frame h or h<1>, Fig. 4, is provided with an inclined portion h<2> which, when the tanks reach the stowed position, rides on an incline i on a transverse bearer i<1> to lift the tanks clear of the runners. Each frame is secured in the stowed position by a screw j carried in the member e<1>, a spring j<2> assisting the unscrewing of the screw. Similar inclines and fastening means are provided at the top of the frame. Each frame h or h<1>, Fig. 5, is connected to adjacent tanks by a screw k, having right- and left-hand threaded portions k<1>, k<2> which screw into bushes l, l<1> mounted in rubber members m. Specification 505,201 is referred to.
Patent GB-1067645-A (GB)
Title: Improvements relating to substituted ª‡-phenylaminoanthraquinone dyestuffs and their use
IPC: C09B62/80
Filed: 1964-08-04
Abstract: The invention comprises dyestuffs of the formula <FORM:1067645/C4-C5/1> wherein of X1 and X2 one X is hydrogen or a hydroxyl group, the other X is hydrogen or a hydroxyl group or-if the first X is a hydroxyl group-a nitro group, an unsubstituted amino group or one which is substituted by a low alkyl, alkoxy-alkyl, or hydroxyalkyl group (wherein the alkyl or alkoxy groups contain not more than 5 carbon atoms), Y1 and Y2 represent hydrogen atoms or, if each of X1 and X2 is a hydrogen atom each or one Y can be halogen, R represents an unsubstituted or substituted alkyl, alkenyl, cycloalkyl or aryl group, and n is 1 or 2, and the benzene ring A is unsubstituted or further substituted by substituents which do not dissociate acid in water. The dyestuffs may be made by reacting <FORM:1067645/C4-C5/2> WITH <FORM:1067645/C4-C5/3> where X3 represents a hydroxyl group if X1 and X2 independently of each other represent hydrogen or a hydroxyl group; and it represents a nitro group if one of X1 and X2 is a nitro group, an unsubstituted or substituted amino group, and optionally reducing a nitro group symbolized by X1 or X2 to an amino group and if desired reacting said amino group with an alkylating agent.  Alternatively, the dyestuffs may be made by reacting an anthraquinone compound <FORM:1067645/C4-C5/4> with Hal-O2S-R, where Hal represents a chlorine or bromine atom, optionally reducing a nitro group to an amino and alkylating the latter if desired.  This latter anthraquinone compound (IV) may be made by reacting (I) with an amine <FORM:1067645/C4-C5/5>
Patent GB-830058-A (GB)
Title: Atomisers
Inventor: ROBERT GEORGES C H
IPC: B05B11/04
Filed: 1957-09-30
Abstract: 830,058. Spray-producers. ANCIENS ETABLISSEMENTS E.R.F. VAUTHIER & CIE SUCCESSEURS. Sept. 30, 1957 [Oct. 1, 1956], No. 30604/57. Class 69 (3). An atomizer for attachment to a flexible walled receptable consists of a stationary head 1 to be screwed to the receptacle neck and a rotary cap 2 thereon arranged to either allow or prevent the discharge of liquid from a radial orifice 4 in the head. A dip tube 9 is held by a tubular part 8 of the head and leads to an orifice 10 around which air apertures 11 are arranged. A cylindrical part 13 of the cap extends into the head, and has a recess 16 therein which is aligned with a recess 3 in its outer wall. The cap is retained on the head by a flange 12 engaging within a groove 18, and in the spraying position the recesses 3 and 16 are aligned with the orifice 4. In operation the squeezing of the receptacle causes liquid to be forced up the dip tube and through the orifice 10, and air from the receptacle is forced through the apertures 11 to atomize the liquid and disperse it through the orifice 4. Rotary movement of the cap is controlled by a boss 21 thereon which moves between stops on the head. In a modification, Fig. 6, the head is not screwed to the receptacle but has a part 24 which plugs into the receptacle neck. Grooves in the neck may be engaged by ribs 29 on the part 24 to prevent rotation of the head. The head is held on the receptacle by an annular bead 27 on the cap 2a which engages within a groove 28 in the neck. The apertures 11 and orifice 10 are formed in a separate part which carries the dip tube.
Patent GB-846368-A (GB)
Title: Process for the production of acetylene
IPC: C07C2/78
Filed: 1958-09-25
Abstract: <PICT:0846368/IV(b)/1> Acetylene is produced by the partial combustion of hydrocarbons with oxygen using a pressure of at least 2 atmospheres.  In a preferred embodiment, methane at high pressure is decompressed to 16 atmospheres in a pressure reducing valve 1 and after pre-heating to about 500 DEG C. in a heat exchanger 4 is introduced into an ejector 6.  Oxygen at 1 atmosphere is preheated to 500 DEG C. in a heat exchanger 4 and also introduced into the ejector 6.  A mixture of 62% methane and 38% oxygen at 3 atmospheres is passed into a combustion chamber 8 where the temperature is raised to 1400 DEG C.  The flame is extinguished with water sprayed through nozzles 9 by a pump 10, carbon black being discharged through an outlet 11.  The gas containing 8,5-9,0% of acetylene is cooled in a scrubber 13 and the water which collects at the bottom at a temperature of 120 DEG C. releases its heat to a heat exchanger 12, where the selective solvent used for the absorption of acetylene is heated.  The gas is cooled to 0 DEG C. in a tower 16 and is then washed with the selective solvent.
Patent GB-1069147-A (GB)
Title: Improvements relating to parametric amplifiers
IPC: H03F7/04
Filed: 1964-08-04
Abstract: 1,069,147. Parametric amplifiers. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Aug. 4, 1964 [July 24, 1963], No. 30707/64. Heading H3B. In order to permit operation of a parametric amplifier including a resonant circuit containing a signal-varied capacitance at pump energies which would tend to cause instability, a succeeding amplifier is connected in cascade with the parametric amplifier and negative feedback is applied from the succeeding amplifier to the parametric amplifier to damp the resonant circuit. As shown a pump signal from pulse generator PG is applied over centretapped transformer TP to two circuit branches each including two crystal diodes C 1 , C 2  and C 3 , C 4  respectively biased in their reverse directions by different voltages -V 1 , -V 2 , the two branches being in series with inductor L and the series circuit tuned to the pump frequency. The input signal applied to terminals K 1 , K 2  is superposed on the bias voltage and varies the capacitances of the diodes so that an amplitude-modulated signal appears across inductor L. If the pump energy is increased in order to increase the amplification strong second harmonic components of the pump energy are generated which reduce the damping of the circuit and lead to instability. In order to counteract this the output from a tapping P on the inductor L is fed to a transistor amplifier TR provided with negative feedback between its base and collector over resistive impedance 2 and capacitor C 6 . The negative feedback results in a decrease of the input resistance of the transistor stage and so increases the damping of the circuit to counteract the negative resistance effect and permit the pump energy to be increased. The impedance Z and capacitor C 6  may be omitted and a lowvalue inductor connected in series with the emitter lead and a low value capacitor, connected between the emitter and base. An output at the pump frequency modulated at the signal-frequency appears across terminals K 1 , K 2  from which, after demodulation, an amplified output at the signal frequency can be derived.
Patent GB-301633-A (GB)
Title: An improved device for purifying or cleansing air or gases
IPC: B04C3/00
Filed: 1927-11-16
Abstract: 301,633. Rending, H. C., and Tulloch, T. G. Nov. 16, 1927. Density separators.-A cleaner for gases has a hollow container a, b the upper part a of which is of upright conical formation and has a tangential inlet c' of fishtail or similar form. The crosssectional area of the inlet c<1> is smaller than that of the pipe c to which it is connected, in order to increase the velocity of the entering gas. A conical plate e is mounted on four members e<1> in the hollow casing, and the separated dust passes through the annular space between the plate e and the wall a into the lower part b of the container. The clean gas passes out through the pipe d, leaving the container directly from its upper extremity. A cap b<1> closes the lower end b and can be detached for removal of the dust.
Patent GB-644206-A (GB)
Title: Improvements in or relating to aircraft
IPC: B64C21/06
Filed: 1946-10-16
Abstract: 644,206. Variable-camber wings. STALKER, E. A. Oct. 16, 1946, No. 30801. Convention date, Dec. 8, 1943. [Class 4] A variable - camber wing comprises leading and trailing edge flaps 11, 12 hinged to the underside of the wing at 13, 14 respectively, slots 27, 28 being formed between the flaps and upper wing surface for boundary layer suction by a blower 30. The purpose of the arrangement is to maintain a substantially uniform pressure over the major portion of the upper surface, as shown by the curve OBDF in Fig. 3. The rear flap 12 is provided with a slot 29 near its trailing edge and, when fully lowered, uncovers a further slot 31 in the upper wing surface. Movement of the flaps is effected by a pushpull rod 19 through links 15, 16.
Patent GB-963166-A (GB)
Title: Centrifugal countercurrent exchange device with interchangeable disc columns
IPC: B01F5/00
Filed: 1962-08-10
Abstract: <PICT:0963166/C1/1> A centrifugal countercurrent exchange device has a rotor, a plurality of spaced concentric bands positioned in said rotor, said bands being formed with holes arranged to afford a plurality of radially extending cavities, and disc columns removably positioned in said cavities, said disc columns being adjustable and interchangeable with other disc columns to obtain any desired condition of droplet dispersion within said rotor.  A centrifugal countercurrent exchanger of the type described in Specification 958,130, has shaft 12 suitably journalled for rotation in a supporting structure 14. A drum or rotor 16 is rigidly connected to the shaft 12 for rotation therewith, and the entire device is enclosed by a removable protective cover such as 17. Suitable passageways such as 18 and 20 are provided in the shaft 12 for respectively supplying the heavier liquid to the central area of the drum 16 and removing the lighter liquid therefrom.  Similarly, suitable passageways such as 22 and 24 are provided for respectively supplying the lighter liquid under pressure to the peripheral area of the drum 16 and removing the heavier liquid therefrom. Communicating with the passageway 24 for removing the heavier liquid are passageways 26 provided between the spill-over discs 28 and end plates 30 of the drum 16. A plurality of concentric cylindrical separator bands 32 is mounted in the spill-over discs 28 as indicated. The separator bands 32 are completely imperforate over their entire areas, save for a plurality of series of aligned disc column holes such as 34, 36, 38 and 40, and permit efficient and substantially complete separation of the two fluids after each mixing stage.  Removably positioned within each of the series of aligned holes, 34, 36, 38 and 40, is a disc column indicated generally by the numeral 42, depicted in detail in Figs. 2, 3 and 4 of the drawings (not shown).
Patent GB-910041-A (GB)
Title: Improvements in or relating to hand gardening tools
IPC: A01C5/02
Filed: 1961-08-26
Abstract: 910,041. Garden tools. HOWE, L. P. Aug. 26, 1961, No. 30835/61. Class 6(2). A garden tool for marking out rows when planting seeds or seedlings comprises teeth 1-3 mounted on a bar 4, the central tooth 2 being integral with or welded to the bar 4 and the teeth 1, 3 being displaceable along the bar. The tool is preferably made from aluminium.
Patent GB-714491-A (GB)
Title: Improvements in or relating to hyperbolic pylons
Inventor: CHEVREAU RENE LOUIS MARIE
IPC: H01Q1/12
Filed: 1950-12-19
Abstract: 714,491. Lattice pylons. SOC. D'ETUDES DES PROCEDES CHEVREAU ET DEVILLE. Dec. 19, 1950, No. 30880/50. Classes 20 (1) and 20 (2) A tower or pylon comprises two clusters of rigid, rectilinear elements, e.g. tubes, bars or section irons, each cluster comprising a small number, e.g. three to six, of elements 1 ... 6, 1<SP>1</SP> ... 6' the elements being disposed to form generatrices of a frustum of a cone which has been twisted about its axis, clockwise for one cluster and counter-clockwise for the other, whereby the elements of both clusters are inclined in opposite directions to provide crossing points at which the elements 1 ... 6 of one cluster are connected, e.g. bolted, to the elements 1<SP>1</SP> ... 6' of the other. The elements may be of wood or metal and one cluster lies within the other. Cross points at the same height are connected by brace members, and cross braces may be employed intermediate the ground and the first cross point.
Patent GB-1512853-A (GB)
Title: Acellular plankton and its preparation
IPC: A61K8/99
Filed: 1975-07-23
Abstract: 1512853 Plankton products L'OREAL 23 July 1975 [24 July 1974] 30891/75 Heading A5B A process for the preparation of an acellular plankton product comprises treating the cells of plankton harvested from hot, sulphurous springs so as to break the cell walls while retaining the chemical structure thereof and collecting the resulting product. The products may be used in cosmetic compositions and in one example witch hazel is also present.
Patent GB-244469-A (GB)
Title: Improvements in adjustable self-closing valve
IPC: E03D3/04
Filed: 1925-12-09
Abstract: 244,469. Everstam, J. G. Dec. 15, 1924, [Convention date.]. Valves controlled by pilot or relay valves.-A slow closing valve of the kind comprising a main valve actuated by a piston under the control of an auxiliary valve adapted to exhaust fluid from the actuating chamber has the leak supplying high pressure to the actuating chamber adjustably controlled by a needle valve adapted to be manually reciprocated to clear the leakage port of dirt. In the form shown in the Figure the main valve 9 which is actuated by a piston 4 has a soft face 11 and a graduating extension 12 and is guided by a spider 13 engaging the passageway. The control valve 34 is opened by a lever 38 against the action of a spring 35 to connect the chamber 6 with the outlet 7 through a passage 33. The leakage port 17 is connected to the inlet through a passage 15 protected by a cylindrical strainer 19 held in place by a ring 20 and is regulated by a needle valve 22 screwed into the cover 2 and adapted to be actuated by a handle 26 acting against a spring 24. The handle works in a slot 27 in a cap 29 adjustably secured in position by bolts 32 passing through a plate 31 and through slots in the cap so as to limit the upward movement of the valve while allowing it to be advanced into the post to clear it of dirt. In a modification. the needle valve is arranged to slide in the cover and is operated by the main actuating lever. a screw stop being fitted to limit the upward movement.
Patent GB-664689-A (GB)
Title: Improvements in or relating to wave guide junctions for ultra-high frequency electromagnetic waves
IPC: H01P5/20
Filed: 1948-12-02
Abstract: 664,689. Wave-guides; impedance transformers. WESTERN ELECTRIC CO., Inc. Dec. 2, 1948 [Dec. 5, 1947], No. 31240/48. Class 40 (viii). A wave-guide junction comprises two like sections of rectangular wave-guide forming a V - shaped structure with their inner sides forming the inner apex of the structure and their outer sides forming a truncated outer apex S having a width substantially equal to the width of either of the section apertures A or B, the distance from aperture S to the inner apex being equal to one half wavelength of the lowest frequency to be transmitted. A coaxial line 414 with its inner conductor 416 projecting into the guide space near aperture S connects through a further coaxial line 415 with a further guide 406 of the same cross-section as apertures A, B and S. Adjustable pins 601, 603, 605, and 607 compensate for impedance irregularities. The guide 406 may swivel on coaxial line 415. The points A and B are conjugately related and so also are the aperture of wave-guide 406 and point S. Specifications 643,162 and 664,688 are referred to.
Patent GB-872578-A (GB)
Title: Method and apparatus for glueing or pressing boxes and like containers from veneer or other laminated or fibrous material
IPC: B27D1/08
Filed: 1958-09-30
Abstract: 872,578. Moulding boxes. HABO LAGGKARLSFABRIK A.B., and SILFVERSKIOLD, L. Sept. 30, 1958 [Sept. 30, 1957; July 10, 1958], No. 31281/58. Class 87(2). [Also in Groups XVII and XXIII] Boxes or cartons are formed -with sightly curved side walls and curved corners by bending and glueing veneer or other sheet material between an inner fixed press mould 1 and an outer press mould 2 comprising elements 3-7 movable by pressing members to and from the inner press mould 1. Sheets 16 spread with glue or artificial resin are laid on the outer mould 2, plate 4 being first moved by a jack 17 against surface 9 of the inner mould 1, followed by plates 3 and 5 simultaneously operated by jacks 20 and 21, then plates 6 and 7 operated by jacks 28 so that a tube is formed, a smooth joint being effected by the sheets' stepped ends. The tube is pulled off a pyramidal inner mould 1 when the glue has set on completion of the pressing ; alternatively the inner mould is formed in several parts joined by wedges, which permits diminishing the size of the mould to allow withdrawal of the tube. A bottom for the carton comprising a plate 40, stiffening verge 60 and reinforcing plate 70 may be placed on the inner mould top, see Fig. 15, and internal stay hoops 52 and 53 ; the bottom and hoops adhere to the tube on application of the pressure. In a modification, the inner mould is shaped as a hexagonal truncated pyramid, the outer mould pressing elements being developed fanwise. In a further modification, the pressing elements are not hinged together but each is mounted separately upon a jack. Handholes and drainage holes may be provided in the finished cartons.
Patent GB-249922-A (GB)
Title: An improved bolt anchor
IPC: F16B13/00
Filed: 1924-12-31
Abstract: 249,922. Rawlings, J. J., and Rawlplug Co., Ltd. Dec. 31, 1924. Addition to 243,040. Anchoring-devices.-The parent Specification describes a bolt anchor comprising a number of segmental pieces of hard metal which are held together by a thin web, wire, or tubular soft metal extension and in which the outer edges of the segments are sharp for engagement with the wall of a hole in which the bolt head and anchor are inserted. According to the present invention the segmental pieces A are formed at one end with curved or rounded edges m which are eccentric to the opposite edge, or oblique to the longitudinal axis of the segment, the segments being tapered in thickness towards the inner edges. The edges m may be grooved, stepped, toothed, or roughened.