baber/WOPTO huggingface dataset:
Patent GB-775674-A (GB)
Title: Improvements in or relating to the control of alternating current electric motors
Inventor: CAIRNCROSS HARRY SIDNEY
IPC: H02P1/42
Filed: 1954-05-24
Abstract: 775,674. Control of A.C. motors; thermal switches. GENERAL ELECTRIC CO., Ltd: May 23, 1955 [May 24, 1954]. No. 15283/54. Classes 38(3) and 38(5) [Also in Group' XIII]  A split phase motor has a tapped running winding 1 and a starting winding 2 which is connected in series with a phase-displacing capacitor 3. The starting winding is disconnected when a bimetallic switch 9 opens its contacts 7, 8, which remain open, as long as current is supplied to the running winding, due to heating-current derived from a section of the winding. The switch, which may be mounted in or on the motor casing, comprises an insulating base 12 carrying the fixed contact 8 and a support for the bi-metallic element. A limb 14 of the element is wider than the limb 15 which is bowed to provide snapaction. The moving contact 7 is mounted near one end of the bimetallic element. As shown, the element is provided with a slot between the two limbs and this slot opens into a circular aperture. A line of bending runs across the limb 15 level with the centre of this aperture, and a further line of bending is placed where the limb passes into the clamping strips 16, 17. In side view, the bends both slope upwardly by substantially the same amount so that, when the element is clamped to the base, the contacts 7, 8, normally engage and the strip 15 is bowed upwardly to provide a snap-action.
Patent GB-553107-A (GB)
Title: Improvements in and relating to chemical reaction chambers
IPC: B01J8/06
Filed: 1941-11-28
Abstract: 553,107. Catalytic apparatus. SYNTHETIC OILS, Ltd., and AICHER, A. A. Nov. 28, 1941. No. 15365. Addition to 505,452. [Class 1 (i)] Apparatus for exothermic reactions comprises a plurality of catalyst containing tubes 1 immersed in a bath 8 of liquid which boils under the reaction conditions, surrounded by an annular space which communicates with the vapour space 9 above the liquid and has an exit 15 for withdrawing condensed liquid. A number of such units may be connected in parallel.
Patent GB-202757-A (GB)
Title: Improved treatment of animal fibres or animal and vegetable fibres in the application of vat dyes
Filed: 1922-06-01
Abstract: In the vat dyeing of animal fibres, such as wool and silk, or materials containing them, by the caustic soda sodium hydrosulphite process, to prevent the deleterious action on the fibres of the caustic alkali, lactic acid is added to the dye-bath.  In examples, woollen yarn is dyed with Caledon Yellow G (flavanthrone) and wool with Caledon Red BN (anthraquinone naphthacridone).
Patent GB-479280-A (GB)
Title: Improvements in or relating to ornamental narrow fabrics
IPC: D03D3/00
Filed: 1936-06-02
Abstract: 479,280. Woven fabrics. GENERAL RIBBON MILLS, Inc. June 2, 1936, No. 15418. Convention date, Jan. 24. [Class 142 (iv)] An ornamental ribbon &c. for forming bows &c. and tying packages has a surface including alternate strips of textile material and strips of non-woven material 42 such as paper held in position by a fine weft or fine weft portions floated over both faces of the strip, so that substantially the entire surface of at least one of the strip faces is visible. The central section is an open mesh fabric formed by fine textile warp and weft threads 46, 48. The edge sections include flat tinsel warp threads 56 and groups of warp threads 58. The strips may be of cellulosic film or artificial paper, or of the non fibrous sheet materials derived from cellulose esters and ethers. Designs may be printed on the strips. The tinsel threads may vary in colour. The Specification as open to inspection under Sect. 91 describes a fabric comprising a central wide strip of unwoven sheet material and side portions which include flat tinsel threads and edge warp threads of textile material. This subject-matter does not appear in the Specification as accepted.
Patent GB-1036086-A (GB)
Title: Improvements in or relating to processes for the preparation of unsaturated steroid lactones
IPC: C07J21/00
Filed: 1963-04-18
Abstract: The invention comprises the 16a -propanolid and the 17a -propanolid of, respectively, 16b -hydroxy - androst - 4 - en - 3 - one and 17b -hydroxy - androst - 4 - en - 3 - one, and a process for preparing 16- or 17-propanolids of unsaturated steroids from a 16- or 17-keto steroid by protecting other groups if necessary, followed by condensation with a Grignard magnesium derivative of a 5 - (b  - haloethyl)-2,2-dialkyl-1,3-dioxolane to form the corresponding 16b  - hydroxy - 16a  - or 17b -hydroxy-17a  - (11,21 - dihydroxy - 4 - butyl) steroid in the form of its 11,21-ketonide, liberating the protecting group or groups, treating the product with an oxidizing agent to effect simultaneous degradation and cyclization of the side-chain to form the corresponding 11,16b -epoxy-16a - or 11,17b  - epoxy - 17a  - (11#x - hydroxypropyl) derivative, and oxidizing this simultaneously or consecutively to form the desired lactone.  The compounds of the invention have aldosteronic activity.
Patent GB-390348-A (GB)
Title: Improvements in wireless receiving apparatus
IPC: H01F21/12
Filed: 1932-05-31
Abstract: 390,348. Inductances. BIDDINGTON, T. A. and FIELD, R., 54, Union Street, Plymouth. May 31, 1932, No. 15455. [Class 37.] A tuning inductance comprises a long, medium, and short waveband coil unit with switch mechanism to connect the coil circuits for each waveband, and means located between the short-wave grid coil and long-wave coils for preventing interaction when the short-wave winding is in use, the long-wave winding being short-circuited as usual when the medium waveband is used. The windings are preferably arranged on a common former, but side-byside or concentric arrangements may be employed. The windings comprise a combined long-wave coil 4, 4a, of which the portion 4a is short-circuited for medium wave work, the winding 5 being the common reaction therefor. The short-wave grid coil 6 is located remote from the windings 4, 4a and its reaction coil 7 is positioned between the windings 4, 5, 6 thus preventing interaction on short-wave working. A portion of the reaction winding 5 may be wound between the coils 4, 6. A metal screen 8 may be interposed between the long and short wave windings. Switches are provided to parallel the short-wave grid and reaction windings with the corresponding long-wave coils, or to short-circuit the long-wave coils and parallel the reaction windings.
Patent GB-328819-A (GB)
Title: Improvements in garment hanger
IPC: A47G25/60
Filed: 1929-05-17
Abstract: 328,819. Heinrich, J. J. May 17, 1929. Coat and like hangers.-In a garment hanger having a chamber 18 for containing disinfectants or insect-destroying material, such as moth balls, the upper part 10 of the hanger is constructed as a resilient wire frame and the chamber 18 is in the form of a slotted tube. The tube is sealed at the ends by caps 20 having apertures receiving part of the wire frame.
Patent GB-131491-A (GB)
Title: Improvements in and relating to X-ray Apparatus.
IPC: H05G1/26
Filed: 1918-09-24
Abstract: 131,491. British Thomson - Houston Co., (General Electric Co.). Sept. 24, 1918. Arc and spark-gap apparatus, arrangements of. -In an X-ray system, a current-limiting device is connected in circuit with the X-ray tube, and means are provided for changing the setting of the current limiting device when the X-ray output of the tube is varied. The current-limiting device employed is a kenetron, a discharge tube, as described in Specification 12747/15, [Class 38 (iv). Electric supply and transmission systems &c.], with an incandescent cathode and operating by electron conduction. The cathode of the kenetron and the cathode 7 of the X-ray tube are provided with heating current from transformer secondaries 8, 9 through regulating resistances 16, 17, and the transformer primary 10 is connected to the alternating current mains 13, 14 through a regulating resistance 15. The kenetron and the X-ray tube are connected in series across the secondary of a transformer 5, the primary of which is connected to an auto-transformer 25 across the mains. In circuit with the auto-transformer are the contacts and tripping coil of a circuit-breaker 28. The switch 29, which varies the auto-transformer turns, varies the tension on the spring 30 to vary the setting of the cut-out. Adjustment of the resistance 25 varies the electron emissivity of the X-ray tube cathode and the kenetron cathode simultaneously. In a modification, a single arm is used to vary the auto-transformer turns, the tension of the spring 30, and the resistance 15 simultaneously.
Patent GB-480075-A (GB)
Title: Improvements in wire cloth fabrics
IPC: D03D25/00
Filed: 1937-06-04
Abstract: 480,075. Wire fabrics. CHRISTIE, Ltd., G., and FORSYTE, J. June 4, 1937, No. 15506. [Class 142 (iv)] [Also in Group XXII] Each lower knuckle of each warp wire passes beneath a pair of adjoining weft wires, and each upper knuckle over single weft wires, the warp wires being of flattened section, as described in Specification 447,165 and a seam is made by bring- ing together the trimmed extremities of the fabric and welding individually the free ends of the warps of one extremity to the free ends of the warps of the other extremity. The welding operation may be effected by the method described in Specification 350,541, [Group XXII]. Beads of fused metal w are formed on the warp ends to be united.
Patent GB-1378965-A (GB)
Title: Apparatus for fabricating synthetic resin articles
IPC: B29C41/06
Filed: 1972-04-05
Abstract: 1378965 Rotational moulds DENKI KAGAKU KOGYO KK 5 April 1972 15563/72 Heading B5A A rotational moulding apparatus comprises a split mould 1 rotatably supported in a frame 2 by shafts 3, a trolley 20 for rotatably supporting the frame 2 by shafts 4, and a chain 23 to rotate the frame 2, via a wheel 42, and at the same time rotate the mould by means of a chain (14), Fig. 2, (not shown), and shaft 11, the chain being rotated by a wheel 10 fixed to a journal of the shaft 4, the trolley 20 being adapted to pass on rails 21 through a filling station a heating station b and a cooling station c. The trolley is moved by a chain 22, and engageable pawls 24, 25. Two moulds can be located in the frame 2.
Patent GB-1291304-A (GB)
Title: Improvements in or relating to electro mechanical linear positioning devices
IPC: H02K41/06
Filed: 1970-04-02
Abstract: 1291304 Motor driving arrangements USM CORP 2 April 1970 [3 April 1969] 15565/70 Heading H2A An electromechanical linear actuator comprises a motor having a flexible, toothed rotor 24 co-operating with a toothed stator 18 so as to form an epicyclic, strain wave gearing similar to that described in Specifications 1,123,031 and 1,102,694, the rotor being connected to a screw and nut device so as to rotate one of these members, the other being non-rotatably mounted for linear movement. As shown, the rotor is mounted on a tube 32 carrying the nut 56 coupled to the screw 62 through recirculating balls 60. The screw actuates a slide 66 to which it is non-rotatably secured by a stop screw 64. The latter screw may be released and screw 62 rotated by a crank 67 to provide coarse adjustment of the slide.
Patent GB-432757-A (GB)
Title: Improvements in cycle and like bells
IPC: G10K1/074
Filed: 1934-05-25
Abstract: 432,757. Bells. WALTON & BROWN, Ltd., and RANDELLS, F., Downing Street, Handsworth, Birmingham. May 25, 1934, No. 15589. [Class 13] In a cycle &c. bell, rattle of the parts is prevented by a plate or frame 14 having apertures 16, 15 fitting loosely over pinions 9, 12 or their spindles or supports and a bent-over portion 17 engaged by the outer end of the toothed segment 8 when in its normal position.
Patent GB-312235-A (GB)
Title: Improvements in apparatus for indicating the rate of fluid consumption
IPC: G01F9/00
Filed: 1929-05-18
Abstract: 312,235. Favre, W. E. May 22, 1928, [Convention date]. Measuring motor fueldistance rate.-A device for continuously indicating, during the running of an engine, the amount of fuel being used per unit distance travelled comprises an even number of non-horizontal fixed volumetric tubes and is operated by two distribution valves which are driven synchronously from a vehicle wheel. The lower valve 11 has four ports arranged circularly round the central pivot 12 which is pierced with a hole 13 to enable the liquid to reach the valve. Two channels 14 and 15, shown in Fig. 3, which is a horizontal section of the lower distributor, form communications, one 14 of the central hole with the port 16 for filling the tubes, the other 15 of the port 17 with port 18. The upper valve 10 also has four ports arranged circularly round its central point 20. The three ports 37, 38, 39, shown in Fig. 2, which is a horizontal section of the upper valve, cause the tops of the tubes to communicate with the atmosphere by means of the upper chamber 40 and of the tube soldered on this chamber and the opening of which issues therein through the hole 41. The port 42 causes one of the tubes to communicate with a manometer by means of the channel 43, the airtight vent 44 pressed against the distributor by the spring 45, the flexible spiral tube 46, and the tube 47. Liquid is supplied through an admission duct 50. The valves are driven by means of a flexible shaft soldered to the fork engagement 69. The conical pinion 70 integral with the fork gears with the gear 71 which drives the shaft 7 carrying the two pinions 8 and 9 which drive the two distributors 10 and 11 by their toothed rim. Liquid is supplied to the engine through the fourth port, opposite the port 16, of the lower valve through the horizontal tube shown at the base in Fig. 1. The depression indicated by the manometer during a quarter turn of the valve is a measure of the liquid used. A compensating reservoir is formed by the outer tube containing the volumetric tubes which serves to slow up the fluctuation of the filling levels of the volumetric tubes. A safety float shown in Fig. 1 is provided for uncovering an auxiliary feed passage when the engine consumption is greater than the capacity of the apparatus.
Patent GB-516567-A (GB)
Title: Improvements in radio navigational systems for aircraft or watercraft
IPC: G01S1/02
Filed: 1938-05-25
Abstract: 516,567. Directive wireless signalling. SMITH & SONS (MOTOR ACCESSORIES), Ltd., S., and MEREDITH, F. W. May 25, 1938, No. 15641. [Class 40 (v)] [Also in Group XXXV] In a receiver for a radio-navigational beam in which the received signals corresponding to the overlapping characteristics are combined in opposition, the indicator is modified to give true guide-path indications, e.g., a central zero reading, when the receiver is moving in a direction convergent with the guide-path. As shown in Fig. 3, the double modulated signals from the transmitter are received on the open aerial 10 and separated in the filters 12, 13, the two signals being then rectified and com bined in opposition in the device 14 to give a direct current having a polarity which depends upon the side of the guide path OX, Fig. 2, the receiver happens to be positioned, and the amplitude of which depends upon the bearing angle a, Fig. 2, of the receiver from the transmitter. This current is applied to the moving coil of the indicator 19, a second coil being supplied from the loop aerial which is mounted athwart the aeroplane. The output from it is applied to the receiver 21 to give a direct current the amplitude of which depends upon the bearing angle # of the transmitter from the receiver and the polarity of which depends upon the sense of this bearing. If the two outputs are applied to the indicator coils in the correct sense, the indicator reading will be proportional to the two bearing angles, and will be zero for a certain direction of approach convergent with the guide-path OX. The sharpness of the approach can be adjusted by regulating the output from receiver 21 by means of a resistance 22. Indications corresponding to the angle alpha only, or to the angle # only, may be obtained by disconnecting receiver 21, or receiver 11, by means of a switch. In conditions of wind-drift, the aeroplane does not reach the course line OX, but eventually approaches the transmitter along a linear path at an angle alpha to the guide-path. The angle of drift can be calculated, or measured by an instrument connected to the output of receiver 21, so that it measures the angle # directly. The drift is then compensated by rotating the loop 20 through the drift-angle, when the course followed will lead to the guide-path. The compensatory rotation of the loop 20 may be effected automatically by means of an electric motor 41 having oppositelywound field-coils 42, 43 one of which is energized through the needle of the indicator 27 depending on the sense of the needle deflection. The aeroplane may be automatically steered by applying the outputs from receivers 11 and 21 in opposition to the coil 50 of a polarized relay 51, which controls the directional gyroscope 52 and so operates the rudder-bar 58. Specification 357,968 is referred to.
Patent GB-906600-A (GB)
Title: Improvements relating to photocomposing machines
IPC: B41B21/26
Filed: 1959-05-07
Abstract: 906,600. Photographic type-composing apparatus; optical systems. MERGENTHALER LINOTYPE CO. May 7, 1959 [July 17, 1958], No. 15643/59. Classes 97 (1) and 98 (1). In a photographic type-composing machine including an array of graphic symbols or characters lit by a light source, there is provided for character selection one or more optical prisms through each of which light from all the characters in the array passes and means for positioning the or each of the prisms in any one of a chosen number of positions so that only light from a selected character will be deflected to pass along a predetermined path to form an image of the selected character. Since the number of different positions from which an image can be formed at a given position by means of n wedge prisms each having m different positions is m<SP>n</SP>, for an eighty-eight character font it is necessary to use for example a single prism having that number of different positions, two prisms each having ten positions or, say, seven prisms each having two positions. Thus with a single prism the characters are arranged on a circle centred at the centre of rotation of the prism or as shown with seven prisms 32, each having two positions differing by 180 degrees, the characters are arranged as indicated on the font plate 10 as indicated in Fig. 8. For such an array four prisms of angles, say, of 1, 2, 4 and 8 degrees would be arranged to deflect light horizontally and three prisms of angle 1, 2 and 4 degrees provide to deflect light vertically, while if a further prism is added for vertical deflection a more compact font plate array as in Fig. 10 may be used. To compensate for slight deviations due to differences in the angle of incidence of light from the array on the prisms, the array may have a slightly cushionshaped appearance (Fig. 11, not shown). Instead of rotating the prism 180 degrees to reverse its deflection, each prism may be replaced by a pair of prisms as in Fig. 4 displaceable across the optical axis in the direction of their aligned faces. A further arrangement of four prisms each having four different positions is referred to for an array as in Fig. 10, the deflections being effected in directions at 45 degrees to the rectangular co-ordinate lines shown.
Patent GB-457486-A (GB)
Title: Improvements in electric discharge lamps
IPC: C09K11/56
Filed: 1935-05-30
Abstract: 457,486. Discharge lamps. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, and JENKINS, H. G., c/o General Electric Co., Ltd., Wembley, Middlesex. May 30, 1935, Nos. 15757 and 32887. [Class 39 (i)] [See also Group XX] A high-voltage, positive column discharge lamp has a filling of neon at 2-10 mms. pressure and a layer of luminescent material in contact with the discharge comprising either calcium tungstate or willemite or a mixture of these, the lamp being operated at such a current density that the ratio of secondary to primary light emitted is approximately a maximum. The luminescent materials specified maintain their efficiency better in neon than in mercury vapour. Further, the neon spectrum is richer in " far " ultraviolet light (less than 1800Š) by which these materials are intensely excited. Slow electrons and metastable atoms also excite luminescence to some extent. The lamps may be 10- 25 mms. in diameter, containing neon at 5 mms. pressure and operating at 50-20mA. / cm<2>. The luminescent material may be on the inner wall of the envelope or on screens inserted within it. Calcium tungstate or willemite alone give resultant lights which are pink and yellow respectively. A mixture of calcium tungstate and willemite may give an approximately white light; for example, a mixture of 40-50 per cent of the former with 60-50 per cent of the latter in a tube 15 mms. in diameter gave, at 35 mA and 1000 volts, white light with an efficiency of 25 lumens per watt. According to the first Provisional Specification willemite, fluorescing green, may be replaced by the modification of zinc silicate which fluoresces yellow.
Patent GB-451721-A (GB)
Title: Improvements in fasteners
IPC: B60R13/02
Filed: 1935-05-31
Abstract: 451,721. Stud-and-socket fastenings. FERNBERG, E. B., Bayswater Road, Headington, Oxford. May 31, 1935, No. 15856. [Class 44] A fastening of press-stud type for securing trim panels in motor cars, securing carpets, and like uses, comprises a strip of spring metal or wire 13 bent to substantially U-form and provided with shoulders 14 snapping behind the edge of an aperture in the support to which the trim panel &c. is applied. The nose 11 of the fastener may be bent into a complete loop, not shown. The limbs 16 of the U -member are bent outwards and anchored to the panel 21 by an apertured plate device 17, the fastener being passed through the aperture and the anchoring device then secured to the panel. Several forms of anchoring device are described comprising essentially a plate with a central rectangular aperture 19 large enough to allow limited sliding movement of the fastener to register it with the aperture in the support, but small enough to prevent the passage of the out-turned limbs 16. The ends 18 of the plate are bent at right-angles to the apertured portion, which is spaced from the support by ribs, or other projections to give clearance for movement of the fastener limbs, and are passed through slots 20 in the panel 21 and secured by bending as at 22. A form of anchoring device is also described as made from a blank in the form of two rectangular U-portions connected side-by-side by, and then bent over to super impose the U-portions. The bases of the U-portions are then bent away from each other to provide an apertured plate portion from which the free ends of the limbs stand out normally and serve for securing the device to the panel. When the support 41 to which the panel is to be applied is of wood the aperture is provided with an apertured member for engagement by the fastener. Figs. 12, 13, 14 show a tapered split sleeve 43 with a terminal flange 44 behind which the fastener snaps, the sleeve being driven into the aperture 42. Figs. 15, 16 show a member of substantially triangular form with a central aperture 52<a> to receive the fastener, tongues 53 to centre the device in the hole 55, and tongues 54 driven into the wood 51. Fig. 18 shows an alternative form in blank. A central aperture 61<a> receives the fastener. The limbs shown are bent up at right angles on the lines 63, the parts 64 serving to centre the device when the parts 62 are driven into the wood. Specification 388,164 is referred to.