baber/WOPTO huggingface dataset:
Patent GB-444950-A (GB)
Title: Improvements in and relating to electric discharge lamps
IPC: H01J61/96
Filed: 1936-01-30
Abstract: 444,950. Discharge lamps. BRITISH THOMSON - HOUSTON CO., Ltd., Crown House, Aldwych, London. Jan. 30, 1936, No. 2848. Convention date, Jan. 30, 1935. [Class 39 (i)] A lighting unit consists of a low-pressure lamp 11 having a falling starting-voltage characteristic, a high pressure lamp 25 having a rising starting voltage characteristic and an incandescible filament 13, all enclosed in an outer envelope 10 and all in series; the envelope 10 may be evacuated or gas filled and the filament is in two sections. The lamp 11 has a filling of sodium at 1 to 2 microns, and some argon at 1-15 mm. pressure ; the lamp 25 has a filling of mercury and argon. The lamps and filament give a white light. The electrodes in the sodium lamp consist of nickel cylinders 17 on insulating plugs 18 ; they have internal heater coils 23 and are internally coated with barium oxide. A connection 22 is made from each lead-in 20 to the exterior of the cylinder. The electrodes 26 of the high pressure lamp may consist of pressed and sintered blocks or coils of tungsten or nickel impregnated with barium oxide. The internal leads of the unit are channel shaped bars 31, 33, which are connected to metal contacts 35. At starting a discharge takes place first across the high pressure lamp and after that across the low pressure lamp, the subsequent rise in voltage in the first lamp compensating the fall in the other and thereby preventing excessive change in the voltage drop across the filament at starting and during normal running. In a modification, a U-shaped sodimn-filled lamp is used with cold electrodes, while in another construction two low pressure lamps are used with one high pressure lamp all enclosed with the filament in an outer envelope, all the lamps and filament being in series.
Patent GB-1294224-A (GB)
Title: Control apparatus and method
Inventor: GREGORY ROGER JOHN
Filed: 1970-01-21
Abstract: 1294224 Automatic flow control BP CHEMICALS Ltd 12 Jan 1971 [21 Jan 1970] 2883/70 Heading G3R In a system for keeping constant the value of a variable, signals indicative of the sign and modulus of error are derived and are used to control a stepping motor which drives a device which influences the variable. Fig. 1 shows a system in which a needle valve 7; which controls the flow-rate of fluid in a pipe 1, is actuated by a stepping motor 6 in response to a voltage from a transducer 3 connected to a differential pressure orifice 2. The error signal is derived by comparing the measured input 8, Fig. 2, with a preset input 10 in an amplifier 9, and is fed to a gain amplifier 11 and to a deviation meter 14 which gives a visual indication that the system is functioning. The amplifier 11 supplies a sense amplifier 12 and a galvo relay 13 which controls the direction in which the motor 6 is caused to rotate via a motor driver 17. The output of the amplifier 11 is also fed to a full-wave rectifier 15 to give a modulus of error signal which controls a frequency-dependent oscillator 16. The oscillator 16 gives an output of varying frequency which controls the speed of rotation of the motor 6. An alternative application is suggested in which the controlled variable is temperature as sensed by a thermocouple.
Patent GB-879645-A (GB)
Title: Improvements relating to amplitude modulation detector circuits
Inventor: PRATT ALAN HERBERT
IPC: H03D1/10
Filed: 1957-01-26
Abstract: 879,645. Superheterodyne circuits; detectors. ELECTRIC & MUSICAL INDUSTRIES Ltd. Jan. 27, 1958 [Jan. 26, 1957], No. 2891/57. Class 40(5) In a superheterodyne receiver using printed circuits, a resistor R1 is connected in series with the diode detector to reduce the generation of harmonics of the intermediate frequency, and hence the feedback of harmonics to earlier stages of the receiver. The value of the resistor may be of the order of the forward resistance of the diode. Specification 823,292 is referred to.
Patent GB-429524-A (GB)
Title: Chemical treatment of corneous materials
IPC: C08H99/00
Filed: 1934-01-30
Abstract: Tortoiseshell and like natural materials are more or less decolourized by bleaching agents which yield nascent oxygen, e.g. hydrogen peroxide.  The material may be treated over a period in a series of baths of increasing strength or in a single bath.  The action may be accelerated by light, ultra violet radiations and electric currents and superatmospheric pressure may be employed. Substances which promote liberation of oxygen may be added to the baths, e.g. ferrous chloride or sulphate, sodium carbonate or silicate, alkaline earth hydroxides, sodium phosphate. Stabilizing substances may be added to prevent too rapid evolution of oxygen when it is necessary to work at a higher temperature than usual, e.g. formic or phosphoric acid, sodium chloride, metaphosphate and pyrophosphate, ethyl alcohol, glycerol, glycol ethers, ethyl ether, acetanilide, &c.  The treated material may be further treated with formaldehyde, or solutions of free or combined chlorine.  Substances of a softening nature such as mixtures of oils and fats, soaps, glycerol, sulphonation products such as sulphoricinoleic acid may be added to render the product more pliable.
Patent GB-620923-A (GB)
Title: Improvements in connection with apparatus employed in the proportional treatment of water or other liquids by reagents
IPC: C02F1/68
Filed: 1947-02-01
Abstract: 620,923. Mixing fluids in flow. CANDY, F. P., and THOMAS, W. D. J. Feb. 1, 1947, No. 3102. [Class 86] [Also in Group XXIX] Apparatus for the dosing of liquids with reagents comprises a meter 1 worked by the liquid to be treated and magnetically driving a hydraulic distributing valve 9 controlling the operation of means by which the reagent is added to the liquid. As shown, the magnetic drive is between parts 3, 5 separated by a non-magnetic casing 4, and a gear box 7 and friction clutch 13 are also interposed between the meter and the valve. Pressure fluid enters valve 9 at 10 and is discharged intermittently through pipes 11 and 12 to cause the operation of an injection pump or pumps. A relay valve may be interposed between valve 9 and the pump(s). Specification 542,682 is referred to.
Patent GB-1330996-A (GB)
Title: Infrared transmitting filter
IPC: C09B1/28
Filed: 1972-01-21
Abstract: 1330996 Vinyl chloride/vinyl acetate copolymer composition AMERICAN CYANAMID CO 21 Jan 1972 [2 March 1971] 3103/72 Heading C3P [Also in Division G2] A composition used in making optical filters (see Division G2) comprises a copolymer of vinyl chloride (97%) and vinyl acetate (3%); tetrahydrofuran (as solvent); dioctyl phthalate; C.I. Acid Green 25; C.I. Dispese Red 9; C.I. Solvent Yellow 13; C.I. Solvent Yellow 14; Direct Dye C.I. 28705; and either 1,4,5,8- tetracyclohexylaminoanthraquinone or 4-(1- azuleniumylidene)-2-( 1-azulenyl)-3-oxo-1-cyclobutenolate. This composition is coated on to glass and dried to give a light-absorbing layer.
Patent GB-1493014-A (GB)
Title: Plastics extrusion die head
IPC: B29C48/09
Filed: 1975-01-24
Abstract: 1493014 Parison die head STANDARD OIL CO 24 Jan 1975 [21 Feb 1974] 3151/75 Heading B5A Blow moulding parisons, of high nitrile barrier resins or rigid P.V.C. material, are extruded from a die head comprising a tubular passage 8, defined between a die body 1 and a stationary mandrel 2 through which extends a shaft 3 which is axially displaceable to vary the extrusion orifice, defined between a downstream end 4 of the shaft 3, and a surrounding die 5. The material enters around the upstream end of passage 8, from an adapter passage 12, at a channel 9 extending above and around a mandrel insert 10, which has a protruding welded bead 11 at its downstream end extending around half the periphery of the mandrel 2. The die 5 is releasably clamped at 7 to the die head, and is transversely adjustable at screws 6. The extruder delivering to the head comprises at least one screw.
Patent GB-103030-A (GB)
Title: Improvements in or relating to the Spindles of Plaiting Machines.
Inventor: DEW JAMES WALTER HENRY
IPC: D04C3/14
Filed: 1916-03-02
Abstract: 103,030. Dew, J. W. H. March 2, 1916. Braiding - machines.-In a spindle for a plaiting - machine, the thread or strip m is passed through a slot d in the pillar c, a loop on the weight i sliding on the pillar, an open-ended slot h at the upper end of the pillar, an eyelet in the pivoted detent f which engages the notches g on the bobbin, a loop l on the weight k sliding in the hollow standard a, and a guide n at the upper end of the standard. The weight k is raised to facilitate threadby an extractor p, which normally rests in the standard a below the weight, the handle o being of thin material so as not to interfere with movements of the weight. A hook q on the handle o engages a part of the standard a when the extractor is not in use.
Patent GB-1457555-A (GB)
Title: Impact-shock absorbing elements
IPC: B60R19/18
Filed: 1974-01-23
Abstract: 1457555 Moulding shock absorbing element L AGHEMO and G APRATO 23 Jan 1974 [23 Jan 1973] 03199/74 Heading B5A [Also in Division B7] A motor car shock absorbing member e.g. a bumper, is formed in two moulding steps, the first comprising an injection moulding of a bearing structure 1 made of a flexible and shock resistant plastics material, and the second comprising an injection overmoulding of resilient and abrasion resistant plastics material 3, having an impact shock absorption coefficient greater than that of the first material. The first moulding may be of ABS, a polycarbonate or PVC and the second may be unfoamed polyurethane. Attachment brackets or decorative inserts may be included in the moulding process. Holes are provided in the first moulding to improve anchoring of the second.
Patent GB-466479-A (GB)
Title: Improvements in track sanding devices for use on motor vehicles
IPC: B60B39/08
Filed: 1937-02-04
Abstract: 466,479. Vehicle sanding-apparatus. PROCHAZKA, K. Feb. 4, 1937, No. 3319. [Class 103 (iii)] A motor vehicle sanding device comprises a sand hopper mounted on and communicating with a tubular shoot 4 and divided into three flexibly - connected sections 1, 11, 41, the top and bottom sections 1, 4<1> being rigidly connected with the shoot and the middle section 11 elastically connected therewith, sand being delivered into the shoot by a rotary feeding element 2 mounted on the bottom section 41 and adapted to operate means, such as tappets or cams 15 for vibrating the hopper section 11, a fan 16 communicating with the shoot discharging the sand therefrom. A separate shoot and fan may be provided for each wheel or the shoot may have branches for supplying sand to several wheels. The roller 2 is grooved and cooperates with a scraper 5 which limits the delivery of sand to the capacity of the grooves. An electric motor 8 rotates the roller 2, and a pulley 7 on the rollershaft 21 transmits motion to the fan-driving pulley 6. The cams 15 are mounted on the shaft 2<1> and contact with arms 14 secured to the middle hopper section 11. -
Patent GB-1344396-A (GB)
Title: Method and apparatus for intertwisting lengths of filamentary or bristle material
IPC: A46B3/16
Filed: 1972-01-25
Abstract: 1344396 Brush knots MANUFACTURES BRUSH CO 25 Jan 1972 [28 Jan 1971] 3434/72 Heading A4K [Also in Division B3] A plurality of lengths of metal or other filament or bristle are intertwisted to form a knot wheel brush by a twisting head which slidably receives each length between a fixed end and a free end thereof, the head being alternately moved axially of the bristles, and rotated. Figs. 1a to 1c show a knot wheel plate 10 with peripheral apertures 14, and a twisting head 20 having a slot 24 and transverse apertures 25, so that when the head is fully advanced, a bundle 15 of filaments can be inserted through apertures 25, 14, 25, and the head is then retracted to double over the filaments. The head is then alternately rotated with slight retraction, and retracted, to form a knotted bundle of filaments. This operation is repeated with indexing of the plate 10 to form, say, three knots in each aperture 14. The head rotating and retracting mechanism is shown in Fig. 6. The head is on a spindle 22 connected by splines 62 and gearing to a rotary stepping motor 69. A helical groove 71 on the spindle is engaged by balls 72 in a ball nut 73 rotatable by rotary stepping motor 89, and movable axially of the spindle by rotary stepping motor 98. Plate 10 is indexed by a rotary stepping motor 59. Each motor rotates a step in response to an electrical pulse derived from a tape. The arrangement is such that motor 69 is operated alone to retract the head, and motors 69 and 89 together to effect rotation of the head with slight retraction. Motor 98 is used to move the head to align its apertures with a slot 14, and is not adjusted during the making of a brush.
Patent GB-1437189-A (GB)
Title: Heat-insulating jackets
IPC: F16L59/10
Filed: 1973-01-24
Abstract: 1437189 Thermal insulation PLESSEY CO Ltd 11 Jan 1974 [24 Jan 1973] 3530/73 Heading F2X A heat-insulating jacket comprises a protective metal coating electrodeposited on a heatinsulating material. Preferably, the protective metal coating is a coating of tin, copper, aluminium or nickel. Typical examples of heatinsulating materials are glass fibre, asbestos felt, mineral wool, ceramic fibre and calcium silicate. The ceramic fibre may be a blown aluminosilicate fibre made from high purity china clay. Where both the heat-insulating material and protective metal coating are pliable, the jacket may be bent to the required shape around the device on which it is to be placed. If the heatinsulating material to be coated is porous, in order to prevent the electrolyte from being absorbed, the heat-insulating material may be initially coated with a moisture-resisting coating, e.g. of silver or of a varnish. Retention of the jackets on devices to be clad may be effected with flexible straps or bands, preferably of metal, which may be attached to or separate from the jackets. Alternatively, the jackets may be provided with projecting studs that can be bound together or they may be provided with hook and eye type arrangements.
Patent GB-750956-A (GB)
Title: Improved system for energising electrostatic precipitators
IPC: B03C3/66
Filed: 1954-02-08
Abstract: 750,956. Electrostatic precipitation. RESEARCH CORPORATION. Feb. 8, 1954 [March 10, 1953], No. 3606/54. Class 39 (1). [Also in Group XXXV] In an electrostatic precipitator having spaced complementary collector and discharge electrodes, the full voltage of the supply is applied alternately in successive half-cycles to different groups of discharge electrodes. Discharge electrodes in alternate ducts between spaced parallel collector plates may form the two groups, or there may be two separate groups of complementary collector and discharge electrodes. Alternate discharge electrodes 34 and 32 are connected to opposite output terminals 8 and 10 of the transformer 2, and these terminals are also connected to the alternately arranged stator shoes 12, 14 and 16, 18 of a rotary rectifier. The rotor arm 20 of the rectifier is connected to the collector electrodes 26 and to earth, and is driven in synchronism with the source of supply by the motor 22. The rotor arm 20 has a counterweight 24, but may be extended to form two rotor arms.
Patent GB-431160-A (GB)
Title: Improvements relating to stays for motor vehicle wind screens
IPC: B60J1/04
Filed: 1934-02-05
Abstract: 431,160. Stays; windscreen-operating apparatus. COX, R. W., 135, Lower Richmond Road, Putney, London. Feb. 5, 1934, No. 3681. Drawings to Specification. [Class 65 (i)] [See also Group X] A motor-vehicle windscreen is operated and held in any position by two or more similar chains of the unilaterally flexible type, such as that described in Specification 376,452, arranged in contact with one another or at a distance apart, with their planes of flexure parallel but not coincident, and operated by the same actuating member through sprocket or worm gearing.
Patent GB-510879-A (GB)
Title: Improvements in or relating to adjustable shelf supports and display apparatus
IPC: A47B57/04
Filed: 1938-02-07
Abstract: 510,879. Adjustable brackets BARFORD, S. J. Feb. 7, 1938, No. 3779. [Class 52 (v)] . An adjustable support for shelves or rods consists of two connected oppositely directed U-shaped clips 2, 3 which embrace a supporting rod 1, one clip having a clamping screw 8 and the other a pair of bayonet slots 6 to hold a transverse rod 11 which may form part of a bracket 9, 10 fitted with a screw 12 to provide angular adjustment. The Provisional Specification describes single U-shaped supporting clips with bayonet-slotted arms and secured by grub-screws to the supporting rods.
Patent GB-607507-A (GB)
Title: Improvements in or relating to spring-cushioned gear wheels
IPC: F16D3/66
Filed: 1946-02-06
Abstract: 607,507. Yielding gear wheels. SCHWEIZERISCHE LOCOMOTIVUND MASCHINENFABRIK. Feb. 6, 1946, No. 3779. Convention date, Feb. 14, 1945. [Class 80 (ii)] In a gear-wheel 4 of'the type having tangentially-disposed springs 7 mounted in sockets 6 between co-acting lugs 3, 2 on the wheel 4 and hub 1 respectively, the sockets are provided on their outer sides with shoes 11' having outer cylindrical surfaces which slidingly abut an inner cylindrical surface coaxial with and forming part of the wheel or hub to take up centrifugal force on the springs and sockets. As shown, the shoes 11 abut the lubricated inner surface of the wheel rim. The sockets are located axially by cover plates 18, and have lateral spring-retaining flanges 15, but are recessed to receive the spring ends so that normally contact is through these only. The faces 17 against which each spring abuts are radially mutually outwardly inclined in the unloaded position of the spring shown, so that they are parallel under normal spring loading. The invention may be applied to gear wheels having each spring mounted in a separate casing on one side of the wheel and attached thereto or to the wheel shaft.
Patent GB-251044-A (GB)
Title: Improvements in the construction of boxes for holding bottles and the like
IPC: B65D85/30
Filed: 1925-02-11
Abstract: 251,044. Foxon, J., Robinson, Ltd., H., and Robinson, R. Feb. 11, 1925. Partitioned boxes.-In a box for holding bottles &c. the removable partitions e, j are supported clear of the bottom of the box by engagement with vertical grooves d in members b fixed to the walls of the box, the grooves terminating a distance from the bottoms of the members b. Accidental removal of the partitions is prevented by a removable crosspiece f and by removable strips g.
Patent GB-454720-A (GB)
Title: Apparatus for producing sounds of a musical character
IPC: G10H3/10
Filed: 1935-02-06
Abstract: 454,720. Electrical musical instruments. MIDGLEY, A. H., and MIDGLEY, A. M., Tudor House, Priory Hill Avenue, Wembley, Middlesex. Feb. 6, 1935, No. 3827. [Class 88 (ii)] In an electrical musical instrument producing oscillations electrostatically, elements of undulating formation, yielding fundamental scale note frequencies which progress geometrically, are carried on a common member. The elements are preferably arranged as concentric rings on a disc, or as circumferential rings on a cylinder, and from a single carrying member two series of scale notes playable from two separate manuals may be obtained. Other members may be provided to supply pure harmonics lying outside the tempered scale, when combining different frequencies in various amplitudes to vary tone. In Fig. 1, the sine-wave rings b charged to the appropriate potentials are connected through small condensers c<1> to the grid of the amplifier d feeding the loud-speaker, and co-operate with a rotating arm or arms c connected to earth. A relay rod y pertaining to a note key depresses the contacts g of the fundamental and harmonic rings b of the note, to make contact with contacts g<1> connecting the rings, switches q being closed, to bus-bars m energized to the desired potentials by battery x, potentiometer wand resistances u through switches s operated by stop (timbre-control) relayrods t. The sound then continues as long as the key is kept depressed. But if switches k, which with condensers i are in parallel with resistances h, are also closed, a reverberation or sustaining effect is produced after release of the key, the condenser charges gradually leaking away through the resistances h. If the switches k and q are all open, depression of a key disconnects condensers o from the bus-bars m at l, and connects the condensers o to the rings b at n to give a percussion effect. Tremolo is produced by a rotating armature 1. Choke coils f silence the key switch contacts. To enable two separate manuals to be used, the undulations are cut in the middle of the rings, Fig. 3, the inner and outer rings of each pair thus produced forming two sets which are connected to separate amplifiers and loud-speakers. If desired, these two sets of rings may be operated from a single manual, their outputs being connected to a push-pull amplifier. Specification 454,783, describing the same construction is referred to. Specification 380,781 is referred to in the Provisional Specification.
Patent GB-607529-A (GB)
Title: Improvements in or relating to the erection of overhead electric cables
IPC: H02G7/10
Filed: 1946-02-07
Abstract: 607,529. Erecting cables. PIRELLI-GENERAL CABLE WORKS, Ltd., and HARDING, J. R. Feb. 7, 1946, No. 3872. [Class 36] The erection of an overhead electric cable is carried out by means of a spinner to which a cable guide is attached so that the weight of the cable bears on the running wheels of the spinner. The cable 1 is led into the proximity of the catenary wire 2 by means of a guide 3. The carriage is provided with supporting wheels or rollers 13 which rest on the catenary wire 2. Mounted on the rear roller 13 is a bevel-wheel 28 engaging a bevel pinion 29 which is supported from the carriage. A spurwheel 32 is mounted on the spindle 30 of the bevel pinion 29 and meshes with teeth 33 which are formed on a cylindrical extension 34 of the flat ring 35. The binding wire 38 is carried on a spool 37, mounted on the ring 35. On moving the carriage to the right, the ring 35 rotates, causing the wire 38 to form an open helix around the cable 1 and the catenary wire 2. At the end of the span of the catenary wire 2, the binding wire 38 is cut and secured and the weight of the cable 1 and guide 3 is transferred to the next span. A rod is inserted through corresponding holes 55 in plates 52 and the guide 3 detached from the carriage by removal of pins 24, 25 and hauled to the next span. The spinner is transferred to the next span and the guide re-attached. Portions of the apparatus are removable to enable it to be placed in position.
Patent GB-197397-A (GB)
Title: Improvements in and relating to land cultivators, sub-soil ploughs, and like implements
IPC: A01B35/22
Filed: 1922-02-10
Abstract: 197,397. Mercer, D. Feb. 10, 1922. Multiple-tool implements; tools, mounting yieldingly.-The soil-working tines described in Specification 179,995 are applied to farm tractors otherwise than in the manner claimed in that Specification, and also to cultivators, sub-soilers, and like agricultural implements generally. The tines are arranged to withdraw from the soil automatically when moved rearwardly. They are pivotally mounted on arms c fastened to the frame a of the implement and are normally held in working position by springs h. They may be turned up into inoperative position by hand, being secured in that position also by the springs h. The tines are provided with adjusting screws g and with removable end pieces f.