baber/WOPTO huggingface dataset:
Patent GB-539817-A (GB)
Title: Improvements in or relating to direction indicating instruments
IPC: G01C17/30
Filed: 1940-02-23
Abstract: 539,817. Earth-inductor compasses; phasedifference measurements. SCOPHONY, Ltd., WIKKENHAUSER, G., and JONES, P. L. F. Feb. 23, 1940, No. 3392. [Class 40 (i)] In an earth-inductor compass in which the phase of the voltage generated in a coil rotating in the earth's field is compared with that generated by a generator rotating synchronously therewith, the generated current is applied to the rotor coil of the phase indicator through a transformer the secondary winding of which rotates with and is connected to the rotor coil. On the vertical shaft 1, Fig. 1, of a motor 2 is a permanent magnet 3 which generates three-phase currents in windings 4, 5, 6, the phase of these currents being independent of the movement of the vehicle to which the windings are fixed. On the shaft 1 are also fixed an earth-inductor coil 7 and a coil 8 connected in series therewith. The coil 8 forms the primary winding of a transformer having a fixed secondary winding 9. The iron core of the transformer is formed by a part of the shaft 1, the magnetic circuit being completed by a stationary outer frame 10. Current from the stationary secondary winding 9 is fed after amplification if necessary, to the phase indicator shown in Fig. 2. This consists of a second transformer having a rotatable secondary winding 11 and a stationary primary winding 12, to which is fed the current from the winding 9, Fig. 1. The secondary winding 11 is connected to an air cored coil 13 moving in the field of three stator windings 14, 15, 16, to which are fed currents from the windings 4, 5, 6 of the generator. The coil 13 takes up a position dependent on the difference in phase between the currents generated in the coil 1, Fig. 1, and in the coils 4, 5, 6, and therefore indicates the compass direction of the vehicle. The iron parts of the transformers 8, 9, 11, 12 may be provided with air-gaps, for example an axial slot, or may be segmented. The rotor coil 13 may be damped by means of a small gyroscope or by immersing the instrument in a damping liquid.
Patent GB-179881-A (GB)
Title: Improvements in pleasure wheels
IPC: A63G27/00
Filed: 1922-02-06
Abstract: 179,881. Bouracier, L. C. J., and Fagan, F. M. Feb. 6, 1922. No Patent granted (Sealing fee not paid). "Great " wheels.-Relates to " great " wheels of the type which travel along a track. According to the invention the wheel 3 runs down an inclined track 7 by gravity and is rotated by the toothed wheel 8 and rack 9. It is drawn back to the upper end of the track by a rope 10 passing round a pulley 11 on the wheel axle 5. Rollers 6 are provided at each end of the track to support the axle 5 while the wheel is rotated to permit the passengers to enter the cars 4 from platforms 12<a>. A pneumatic device 15 is provided to push the axle 5 off the rollers 6 and to start the wheel down the incline. A pawl is provided to engage the rack 9 and hold the wheel in the event of the rope 10 breaking.
Patent GB-971503-A (GB)
Title: Improvements in or relating to electrical measuring instruments
Inventor: DEAN DEREK JOHN
IPC: G01R11/02
Filed: 1960-02-01
Abstract: 971,503. Electric meters. SANGAMO WESTON Ltd. Feb. 1, 1961 [Feb. 1, 1960], No. 3494/60. Heading G1Q. [Also in Division H1] In an electrical measuring instrument, such as a moving coil meter, in which a protective casing surrounds an indication-producing mechanism and at least one resistor or other circuit component is associated with such mechanism, the said component is releasably secured to an internal wall of the casing by means of tongue or groove on the component frictionally engaging a groove or tongue on the wall. As shown, Fig. 1, a meter casing 10 comprises a cylindrical chamber 11 for receiving the meter movement (not shown)and one or more shunt or series resistors, which are mounted in inwardly projecting blocks 27 on the cylindrical wall of the chamber 11. Each block 27 comprises a T-shaped groove 28, tapered at its front end, into which fits a T-shaped tongue 18, Figs. 3, 6, integral with, and extending axially from, a moulded spool 14, e.g. of nylon, on which the resistance wire is wound. The side arms of the tongue have lips 21 and are resilient so that they form a friction-tight fit in the grooves. The spool also comprises an axial blind hole 22 of square cross-section for mounting on a spindle, and two flanges 16, 17, the latter having a small hole 23, which may be formed by the overlap of grooves 26a, 26b on the outer and inner surfaces of flange 17, through which a lead from the inner end of the resistance wire is brought out. The periphery of flange 17 is notched to provide a channel for the lead from the outer end of the resistance wire; when the resistance wire has been wound, baked, impregnated, and value-adjusted, the two leads are laid across a block 25 integral with the external surface of flange 17 and anchored therein by the local application of heat. The tongues and co-operating grooves may be of other cross-section, e.g. dovetail, and the tongue may be on the casing and the groove on the component. Two simple insulating blocks may be mounted in the case by tongue-andgroove means, a wire-ended resistor being mounted thereon by heat-embedding in, or soldering to tags on, the blocks.
Patent GB-990211-A (GB)
Title: Improvements in or relating to methods of and apparatus for controlling the process of coating optically active elements with thin optical layers
IPC: G01B11/06
Filed: 1963-01-28
Abstract: 990, 211. Photo-electric control devices. LABORATORNI PRISTROJE NARODNI PODNIK. Jan. 28, 1963 [Jan. 29, 1962], No. 3502/63. Heading G1A. The invention relates to a method of and apparatus for controlling the process of coating optically active elements with thin optical layers wherein a light flux of constant effective value is influenced by the changes of optical properties of the applied layer and then impinges upon photosensitive elements, characterized in that the output signals from the photosensitive elements are time differentiated. In the arrangement shown, photosensitive elements 1 receive a constant level flux of cyclically interrupted light which has been transmitted through or is reflected by coatings (not shown) and the output signals are fed to an amplifying unit 2 connected to an instrument 3 which indicates the coating thickness. The output signal from the unit 2 is also fed to an amplifier 4 which differentiates it and feeds it to a polarized relay 6 which controls the coating process and prevents further coating of the material to the surface when a predetermined thickness has been applied. After passing through the layer the light may also pass through suitable interference filters (not shown).
Patent GB-1215485-A (GB)
Title: Method of making dentures
Inventor: REGAN BARRIE F
IPC: C25D1/00
Filed: 1968-01-23
Abstract: 1,215,485. Dentures. B. F. REGAN. 23 Jan., 1968, No. 3620/68. Heading A5R. [Also in Divisions C6 and C7] Metal backbones of dentures are produced by electroforming on a replica of the mouth a first layer of a metal which is compatible with body tissue, a second layer of a substantially unstressed metal which is stronger than the first metal, and a third layer of a metal compatible with body tissue, and thereafter removing the electro-deposited layers from the replica. Prior to electrodeposition the replica may be sealed with a solution of polyvinyl chloride, and made electrically conductive by coating with silver paint or by chemical reduction of a layer of silver, copper or nickel on said surface. The tissue compatible material may be of gold, rhodium or chromium, and the unstressed layer may be of nickel, and the layers may be separated by further layers of silver or tin-nickel alloy. During deposition of the second layer part of the surface, e.g. adjacent the finishing line of the denture backbone, may be mashed to produce cavities in the metal backbone, to which the plastics material resembling the user's gums may be secured.
Patent GB-536161-A (GB)
Title: Improvements in and relating to elastic fluid turbines
IPC: F01D5/22
Filed: 1940-02-28
Abstract: 536,161. Elastic.fluid turbines. BRITISH THOMSON-HOUSTON CO., Ltd. Feb. 28, 1940, No. 3677. 'Convention date, March 1, 1939. [Class 110 (iii)] Blades 8 straddled upon an undercut rib 6 are entered at a cross-slot 14 which extends into the rim 10. The slot is closed by a block 15 which is secured by peening the edges against the chamfer 17. The sides of the block are slightly undercut so that pressure is applied to the adjacent blade roots by the surfaces 22 only. The portion of the cross-slot in the rib 6 is wider than the blade roots and the block 15.
Patent GB-515612-A (GB)
Title: Improvements relating to shock absorber struts particularly for aircraft tail and like wheels
IPC: B64C25/50
Filed: 1938-02-05
Abstract: 515,612. Stuffing-boxes. DOWTY, G. H. Feb. 5, 1938, No. 3696. [Classes 122 (i) and 122 (v)] [Also in Groups XXXIII and XXXII] A tube 3 rotatable and slidable within a tube 4 carrying a stem 5 is provided with packing means comprising two oppositely arranged U- section leather or rubber washers 12 spaced by a distance piece 13 and forming a seal between the tube and the stem 5.
Patent GB-921176-A (GB)
Title: Improvements in or relating to apparatus for handling bottles made from synthetic thermoplastic material
Inventor: ROE EDWARD PETER
IPC: B65G59/06
Filed: 1961-01-31
Abstract: 921,176. Endless conveyers. METAL BOX CO. Ltd. Nov. 14, 1961 [Jan. 31, 1961], No. 3716/61. Class 78 (1). Thermoplastic bottles 6, held inverted in a magazine 9 are fed to holders 2 on a continuously running endless conveyer 1. Fig. 5 shows the start of a cycle. A metal holder 2 is held against movement by a finger 15 and detected by a sensor 16 which through control circuits 16a, 17a de-energized solenoid 11 so that a finger 13 is spring-urged out of the path of lowest bottle 6 so that it falls into the holder 2 where it is located by a spigot 7 (Fig. 3). The bottle in the holder actuates photo-cell 17 which, through circuits 16a, 17a de-energizes solenoid 14 so that finger 15 releases the loaded holder 2 so that it is carried away by the conveyer 1. At the same time the finger 13 is moved into the path of the bottles and finger 12 releases the column of bottles which drops until held by finger 13. Actuation of a photocell 18 by the now lowest bottle 6 causes finger 12 to be re-inserted in the path of the bottles. As the loaded holder 2 moves away from beneath the magazine 9 sensor 16, through the control circuits causes the finger 15 to be re-set so that the apparatus is ready for another cycle. The bottle holder 2 may have an annular spigot 7a (Fig. 6, not shown) which surrounds the bottle neck 5. To reduce noise the bottle holder 2 may be of plastic or fabric material with an iron ring 20 (Fig. 7, not shown) for sensing by sensor 16. The bottles 6 may be removed from the holders 2 by air blown through the bottom of the holders.
Patent GB-1211933-A (GB)
Title: Improvements in or relating to radars
IPC: G01S1/02
Filed: 1968-01-25
Abstract: 1,211,933. Radio guidance and radar. TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. 25 Jan., 1968 [10 Feb., 1967], No. 3916/68. Addition to 1,136,643. Heading H4D. A radar adapted for use for the control of target-following missiles comprises a directional aerial arrangement as claimed in the parent Specification. Of the two directional aerial systems having approximately the same origin and main direction of radiation, one, having the smaller aperture and operating on the shorter of two wavelengths is employed for missile following, and the other aerial system, having the larger aperture and operating on the longer of the two wavelengths, is employed for target following. The two aerial systems may be used for simultaneous radar location of a target and a missile, or one may provide a radio guiding beam along which a missile steers itself. Further equipment may be associated with the radar for determining the angle between the directions of a target and of a missile to be guided thereto, and it may function by detecting infra-red radiation from the missile.
Patent GB-494386-A (GB)
Title: Improvements in or relating to the production of metallic magnesium
IPC: C22B26/22
Filed: 1938-02-08
Abstract: 494,386. Magnesium. MAGNESIUM ELEKTRON, Ltd. Feb. 8, 1938, No. 3955. Convention date, April 5, 1937. [Class 82 (i)] A mixture for use in the thermal production of magnesium from dolomite or magnesite is made by forming a pulverulent mixture of burnt dolomite, or burnt magnesite and quicklime, with silicon (ferrosilicon) or aluminium serving as reducing agent, suitably shaping the mixture, and heating it in hydrogen &c. to 850-1200‹ C. in the case where silicon is used as the reducing agent, or to 700-1050‹ C. in the case of aluminium, until a hardening of the mixture has taken place. Shaped pieces of the mixture may be introduced at i into a rotating iron tube a supplied with hydrogen &c. at h and heated by resistances b supplied with current at c. After e.g. 5-30 minutes the pieces so hardened fall into a container d fitted with valves e, f. Large pieces may be hardened and subsequently broken by a roller crusher. Fluorides may be added to the mixture as described in Specifications 465,097 and 487,836.
Patent GB-197402-A (GB)
Title: Improvements in and relating to telautography
IPC: H04N1/41
Filed: 1922-02-10
Abstract: 197,402. Bartholomew, H. G., and McFarlane, M. L. D. Feb. 10, 1922. Selective punching-machines. - In the telegraphic transmission of pictures &c., the tone values of the elementary areas into which the picture is divided are utilized to prepare automatically a perforated band record of tone values adapted to control an automatic telegraph transmitter. Figs. 3, 4 show a perforator (generally resembling a Gell perforator) for making the record when four tone representations of the picture are used. Three banks of punches 12, 12<a>, 12<b> are provided, the central bank forming the feed holes. Four electromagnets 37, 37<a>, 37<b>, 37<c>, each receiving marking impulses from the corresponding representation, are arranged to operate selectively eight punch-selecting bars. Each magnet operates a hammer 69 acting to move inwards a pair of selecting bars 36. Perforating impulses energize a solenoid 25 serving to depress a slider 22 through links 26 and pitmen 24. Each punch has a slot 35 and is free of the slider, except when the corresponding bar 36 has been moved inwards, when the punch moves with the slider. The slider directly operates the central feed-hole punches. An adjustable connection 31 is provided between the moving yoke 32 of the solenoid and link 26. The punches co-operate with a the 18, and their upward movement is limited by a plate 19 adjusted by a screw 20. The feed solenoid 38 moves a bar 43 to the left and carries a pawl 45 over the teeth of razchet wheel 47, spring-return movement of the bar feeding the ratchet wheel a predetermined step. The feedwheel, not shown, is secured to the ratchet wheel shaft 48. A relay arrangement is described which closes circuits first through the feed solenoid and also controls a member 66 adapted to lock or free the lower end of a check-ratchet 50 engaging wheel 47.
Patent GB-502381-A (GB)
Title: Improvements in and relating to fountain pens
IPC: B43K5/06
Filed: 1938-02-09
Abstract: 502,381. Fountain pens. MONTBLANC-SIMPLO GES. Feb. 9, 1938, No. 4019. Convention date, April 2, 1937. [Class 146 (iii)] In a self-filling fountain pen having a piston actuated by a number of telescoping elements, an operating-cap 45 is connected to the end element 40 by a friction coupling which moves the piston on its suction stroke only from its forward position and is released only when the piston reaches its rear position. The cap screws on the end of the element 40 to which is also fixed a washer 47. When the cap is unscrewed along the element 40, it finally binds against the washer 47 and so causes movement of the piston to its forward position ; on the return movement, the cap remains coupled to the element 40 until the piston reaches the rear end. In order to prevent binding of the piston-operating mechanism with the wall of the barrel due to shrinkage or the like, a metal or other ring may be inserted in the barrel. The Specification as open to inspection under Sect. 91 describes also a pen provided with a piston 2, Fig. 1 (Cancelled) to which a cork packing is secured against rotation and which is connected to a sleeve 3 as by beading. The rear end of the sleeve is formed with an internal projection engaging the helical thread impressed in a sleeve 13; the end of the thread is so formed as to prevent disconnection of the sleeves 3, 13. The sleeve 13 is also formed with an internal projection adapted to engage the helical thread on a rod 17 secured to a head 22 rotatable on the end of the barrel ; disconnection of the sleeve 13 and rod 17 is prevented by a collar 19. A pin 9 in the rear end of the barrel engages a slot 5 in a reciprocable sleeve 6, another slot in the sleeve being engaged by a pin 4 in the sleeve 3. The pin 9 may be embedded in the material of the barrel or be covered by a metal ring inserted in a groove in the barrel ; alternatively it may be formed as a projection on a ring. The end of the head 22 and the outer end of the rod 17 may be formed with grooves to facilitate the escape of air from behind the piston. The telescoping parts of the mechanism may be protected against corrosion by coating with a resistant metal or with wax, grease, or the like. This subject-matter does not appear in the Specification as accepted.
Patent GB-1481296-A (GB)
Title: Cladding arrangement
IPC: E04B9/34
Filed: 1976-02-02
Abstract: 1481296 Ceiling cladding HEINRICH JOSEPH WINTER KUNSTSTOFFVERARBEITUNG UND WERKZEUGBAU GmbH 2 Feb 1976 [1 Feb 1975] 04026/76 Heading E1W A cladding arrangement for ceilings comprises a plurality of annular shaped hollowcentred grid elements 2 fixed to a supporting framework 1 which, in plan, corresponds in size and shape to the grid elements. The framework may be joined to other framework elements by connecting strips 15, 16. The grid elements are substantially U-shaped (Fig. 2) and engage with the groove 10 on the framework and are held in position by the projection 8 fitting over the upper edge 9 of the framework. The grid elements may have a cover face which closes off the space bounded by its inner wall.
Patent GB-588419-A (GB)
Title: Improvements in or relating to frequency changers
IPC: H01F38/04
Filed: 1945-02-17
Abstract: 588,419. Frequency changing. TENCH, F. (Automatic Electric Laboratories, Inc.). Feb. 17, 1945, No. 4042. [Class 38 (ii)] A frequency reducer supplying current at a frequency which is a subharmonic of the input frequency, comprises a magnetic core with at least two core members wound with a primary winding fed by the supply and a secondary winding shunted by a condenser, there being saturable leakage reactance between the primary and secondary windings. When primary winding 13 on core limb 17 is energized from source 10, Fig. 1, current also flows through condenser 14, relay winding 19 and relay contacts 20. Contacts 20 thereupon open, condenser 14 discharges through secondary winding 11 on core limb 15 and a sub-harmonic current begins flowing in winding 11, through the load, and through the condenser 14 and coil 19 to keep relay contacts 20 open. If the sub-harmonic oscillations stop, relay contacts close and again open to restart them. Core limb 16 provides a leakage path through which flux of both input and subharmonic frequency pass to cause saturation, and in which power is translated from one frequency to the other. In one modification, Fig. 4 (not shown), the load is supplied from a winding on core.limb 15, separate from winding 11, and the primary winding is in two parts,. one each on limbs 16 and 17, the saturable leakage reactance resulting from the unbalance due to a different number of turns in the two winding parts, or to the limbs being of different cross-sections. In a further modification, Fig. 2 (not shown), the added difference exists, that the primary current passes through the secondary winding 11. A circuit arrangement is also described in which the primary winding, the secondary winding supplying the condenser and relay coil, and the winding supplying the load are all in two parts, on core limbs 16, 17, there being no windings on core .limb 15, Fig. 5 (not shown). The leakage reactance in this modification results from the turns difference in the two parts, especially of the primary winding. In all these three modifications, the relay contacts 20 are connected across that part of the primary winding on limb 16. In the modification described with reference to Fig. 3, the pairs of primary windings 22, 23 and 21, 24 shown: connected in parallel for a low supply voltage may be connected in series for a high supply voltage. An arrangement of the type described in Specification 557,680 for introducing high harmonics into the load circuit, comprising saturable inductance windings 28, 29 and capacitor 30 is included in the circuit. Condenser 25 in the load circuit provides regu-' lation to reduce the stoppages due to overload.
Patent GB-684035-A (GB)
Title: Method of refining fatty oils
IPC: C11B3/06
Filed: 1950-02-17
Abstract: Fatty oils are treated with strong lye in an amount insufficient to neutralize all the free fatty acid, centrifuged, treated again with strong lye to complete the neutralization and precipitate slimy and colouring matters, and then re-centrifuged. In the first treatment, lye in the form of fine drops is rapidly mixed with the oil, but atomization or the formation of drops smaller than 1m  is avoided.  A disc mixer, such as is described in Specification 670,971, may be used.  The oil may be heated before or after the lye is added.  In the second stage the oil and the lye are preferably mixed more intensively than in the first stage.  Oils of low fatty acid content (below 5 per cent) are preferably treated in the first stage to reduce their fatty acid content to below 0.3 per cent, but oils of high fatty acid content (more than 8 per cent) should still contain at least 25 per cent of their original fatty acid content when they pass to the second stage.  In both the centrifugal treatments the mixture is preferably fed into liquid already in the centrifuge, so as to avoid impact and turbulence, and the inlet zone of each centrifuge is preferably arranged at a distance from the axis of rotation.  The treatment of linseed oil, olive oil, palm-nut oil and soya oil is mentioned.  Reference has been directed by the Comptroller to Specification 635,571.