baber/WOPTO huggingface dataset:
Patent GB-850076-A (GB)
Title: Improvements in and relating to transducers
IPC: H03B5/30
Filed: 1957-01-29
Abstract: 850,076. Gramophone pick-ups, microphones &c. FILM & RADIO, and DUPUIS, A. L. M. Jan. 29, 1957 [Jan. 30, 1956; Dec. 14, 1956], No. 3173/57. Class 40 (4). [Also in Group XL (c)] A variable condenser 2 is used to modulate the amplitude of the oscillations of a tuned anode oscillator 5. The condenser 2 and a coil 1 in the cathode circuit of 5 are normally tuned to a frequency slightly lower than the resonant frequency of the anode circuit so that the oscillations fall on the steep part of the resonance characteristic of 1, 2. The condenser 2 may form part of a gramophone pick-up, a microphone or a vibration detector. The modulations are detected by the same triode 5 which is biased to the anode bend of the characteristic by means of a resistor 12 in the cathode circuit. The audio-frequency output is derived from lead 18a. Any residual high frequency is filtered off by capacitor 16. A coil 14 connected between the grid and the tuning coil 1 may be used to compensate for frequency drift and for non-linearity introduced by the condenser 2. In a modification, Fig. 2, the oscillator consists of two triodes 18, 19 connected in cascode. A coil 34 in the anode circuit of triode 19 is coupled to coil 30 in the grid circuit of triode 18 which is tuned by coil 30 and condenser 31. The cathode circuit of triode 18 is the same as in Fig. 1. Triode 19 is biased by means of resistors 40, 42.
Patent GB-1454612-A (GB)
Title: Electrical connector unit for leadless circuit device
IPC: H01R33/76
Filed: 1974-01-23
Abstract: 1454612 Connector BUNKER RAMO CORP 23 Jan 1974 [26 Feb 1973] 3196/74 Heading H2E A connector unit for a planar device 23 (e.g. integrated circuit) having contact pads 25 in its plane comprises a walled insulating base 21 forming a holder locating the device within, multiple metal contacts 53A, 53B, 54A, 54B each with a resilient part abutting a pad and a terminal pin for external connection, and a slotted insulating cover 22 latched to the base by keys 71, 72 in keyways 75, 83 and removable by bending slightly past 95 of the cover into the slot 93 too small for finger access. The device sits in the recess formed by internal walls 35, 36, the contacts within cavities having cantilever springs tipped with precious metal. Alternate contacts 53A and 54A opposite sit in cavities 51A, 52A and are attached to pins 55A in the outer rows of holes: alternate contacts 53B and 54B opposite sit in cavities 51B, 52B on pins 55B in the inner rows of holes. All pins are retained by resilient tangs. A legend on the upper face of the device may be visible through aperture 101 in the cover to indicate correct assembly. The web 95 may be bent by a plier-like tool (Fig. 3 not shown) engaging depressions 96, 97 to open. Keyway 75 functions as a hinge to allow the cover to be depressed to engage keyway 83.
Patent GB-1476471-A (GB)
Title: Gallium arsenide photocathodes
IPC: H01J1/34
Filed: 1975-01-16
Abstract: 1476471 Photocathodes STAXDABD TELEPHONES & CABLES Ltd 16 Jan 1975 [24 Jan 1974] 03263/74 Heading H1D [Also in Division B3] A transmission type photocathode comprises an active GaAs layer 3 and a GaAlAs layer 4 bonded with solder glass 5 (see Division C1) to a spinel or sapphire substrate 6. The cathode is prepared by growing on a P-type GaAs substrate 2, blocking P-type GaAs layer 1, and layers 3, 4. The outer surfaces are then passivated with pyrolytic SiO 2 . The spinel substrate 6 is coated with glass 5 outgassed and lapped. The assembly 1 ... 4 is pressed against the glass and heated with the glass softens. Layers 1, 2 are removed by electrochemical and non-selective bubble etching as described in Specification 1,448,600. The cathode is activated with Cs.
Patent GB-346882-A (GB)
Title: Improvements in, or relating to, photographic cameras
IPC: G03B19/04
Filed: 1930-01-31
Abstract: 346,882. Photographic roll-film cameras. MILLER, M., The Cedars, Lichfield Road, Sutton Coldfield. Jan. 31, 1930, No. 3303. [Class 98 (i).] Relates to folding cameras of the kind in which the body is built up from sheet-metal pressings, and consists in forming, on those parts of the pressings which form the spool chambers, overlapping flanges which are united as by welding or soldering, and prevent ingress of light to the spools. As shown, a camera body is formed of a main pressing A comprising a bellows frame b<1> and two side walls a2, whose ends form the side walls of the spool chambers ; and two pressings B, C which fit between the ends of the walls a2 to complete said chambers. On the pressing A are formed transverse flanges a<5>, a<6> which overlap and are united to the bases b<5>, c<5> of the pressings B, C, and peripheral flanges a<9>, a<10> which overlap and are united to the edges of the pressings B, C. The metal surfaces adjacent to the joints are dulled or matt-finished as a further safeguard against ingress of reflected light. A detachable back e and a cover d fixed to the front of the body are provided. Reference has been directed by the Comptroller to Specifications 15578/13, 250,550, and 165,575, [all in Class 98 (i), Photographic cameras &c.].
Patent GB-123320-A (GB)
Title: An Improved Machine for use in Electric Welding.
Inventor: FAURE ALBERT
IPC: B23K11/04
Filed: 1919-02-11
Abstract: 123,320. Faure, A. Feb. 11, 1918, [Convention date]. Welding. - In an electric welding-machine the pieces to be welded are gripped by electrodes mounted on a fixed and a moving carriage, the welding current being obtained from a single-turn secondary of a transformer. The fixed carriage 4 and the moving carriage 5 support copper conductors, on which are mounted bronze jaws 7 carrying the electrodes 8. The hand-wheels 9 adjust the position of the electrodes to grip the pieces to be welded, and different shapes of electrode are used for different pieces. In the process of welding, the carriage 5 is moved through a rack and pinion by the hand-wheel 16, or through a connecting-rod 17, Fig. 5, attached to the adjustable members of a double eccentric 18. This adjustment provides for a variation in the effective throw of the eccentric, and in the amount of movement of the carriage 5. The eccentric is driven by the worm and wheel 19 through the friction disk 20. A controlling handle 21 serves the double purpose of releasing the disk 20 and throwing in a cone-clutch 27 on the shaft of the worm 19 when the carriage 5 is to be moved. De-clutching takes place automatically when the eccentric 17 is at the forward end of the stroke. During the movement of the carriage 5 to press together the parts to be welded a switch 24, Fig. 6a, is rocked by the action of the cleat 25 to close the primary circuit of the transformer. The circuit is automatically opened by the escape of the cleat past the pin 44 just before the inward movement of the carriage is completed. The machine is cooled by water circulation.
Patent GB-541359-A (GB)
Title: Improvements in or relating to the production of glycerol
IPC: C07C31/22
Filed: 1940-02-23
Abstract: 541,359. Glycerol. DU PONT DE NEMOURS & CO.; E. 1. Feb. 23, 1940, No. 3438. Convention date, Feb. 24, 1939. [Class 2 (iii)] Glycerol is obtained by hydrolysis of a #-alkoxy-alkyl ether by re-fluxing with an alcohol and a hydrolysis catalyst such as sulphuric, phosphoric, -hydrochloric, hydrobromic or hydriodic acid. Preferably the alcohol corresponds with the alkyl group. The re-action is CH  2 OH.CH(OXOY)CH  2 OH +YOH =CH 2 OH-CHOH-CH 2 OH+X(OY) 2 . The initial ethers may be made by hydrogenating alkoxy-alkyl ethers of alkyl glycerates as described in Specification 541,360. Examples describe the hydrolysis of the methoxy-methyl and ethoxy-methyl ethers with sulphuric acid and methanol and ethanol respectively.
Patent GB-1217237-A (GB)
Title: Folding stays for flap windows
IPC: E05C17/32
Filed: 1968-01-08
Abstract: 1,217,237. Folding stays. AUG. STENMAN HOLLAND N.V. 23 Jan., 1968 [8 March, 1967], No. 3458/68. Heading E2F. A folding stay for a flap window comprises two arms 1 and 2, pivotally connected to each other at 3 and to saddles 6 and 7 respectively mounted on the frame of a window pane and on a window frame, and is characterized in that coupling links 8 and 9 are provided between the saddles 6 and 7 and the ends of the arms 1 and 2, and are pivotally connected both to the saddles and to the arms, the arrangement being such that in the fully folded condition of the stay, the coupling link pivots afford an axis about which the folded arms can be pivoted, effectively as a single member, in a plane substantially at right angles to the plane in which the arms are extended or folded. As shown in Fig. 3, the coupling link 8 comprises a plate 8a pivoted at 12 to the arm 1 and having ears 8b which pivot at 10 on the saddle 6. The coupling link 9 comprises a plate 9a pivoted at 13 to the saddle 7 and having ears 9b which pivot at 11 on the arm 2. The pivot pins 12 and 13 are in alignment when the stay is in its fully folded condition and arm 2 is positioned between the flanges 1a and 1b of the arm 1. In this position, the stay can be swung laterally into the inoperative position (Fig. 2, not shown) because a flange 1a of the arm 1 terminates in front of the coupling link 8. The other flange 1b of the arm 1 extends beyond the coupling link 8 and acts as a stop, thus facilitating movement of the stay into the operative closed position ready for window opening.
Patent GB-362756-A (GB)
Title: Improvements in or relating to electrodes for electrolysis and methods of making same
IPC: C25B9/04
Filed: 1931-02-03
Abstract: 362,756. Electrolysis. CONRADTY, E. and CONRADTY, 0., (trading as CONRADTY, C.), 9, Spittlertorgraben, N³remberg, Germany. Feb. 3, 1931, No. 3493. [Class 41.] Electrodes.-A plate or other shaped electrode b of graphite or other material is provided with a currentsupply and supporting member a having a screwed, coned or like connection, all the interstices such as d, e, f at the points of connection being filled with a plastic or fusible filling material which is impenetrable by and insoluble in the electrolyte in order to avoid local electrolytic action. A difficultly fusible wax such as ceresin may be used either alone or mixed with other waxes. Finely ground graphite may be added to the filling material to reduce the resistance at the contact.
Patent GB-233438-A (GB)
Title: Improvements in and relating to the control of electrically operated switches
IPC: B60L15/12
Filed: 1924-02-11
Abstract: 233,438. British Thomson-Houston Co., Ltd., and Hastings, H. C. Feb. 11, 1924. Master control systems.-A set of electromagnetically operated contactors which close in automatic succession under the control of a two-wire notching relay is associated with two additional relays which when alternately energized by a two-way switch enable the contactors to close in non-automatic succession independently of the notching relay. In the arrangement shown in the drawing, contactors 1 - - 6 short - circuit resistances R<1> - - R<6> for starting a motor M, the successive closures proceeding automatically under the control of a twowire notching relay O, O<1>. If either side of the relay is held up by excessive current in the series windings p, p', the closing sequence is suspended either until the current is reduced or until one of the two additional relays 104. 105 is energized by means of a driver's two-way switch 101. The additional relays bridge over the respective gaps at the notching-relay contacts, so that they must be used alternately in order to continue the closing sequence non - automatically. Specifications 7113/09 and 20662/12 are referred to.
Patent GB-259447-A (GB)
Title: Process for the manufacture of chromates
IPC: C01G37/14
Filed: 1926-02-08
Abstract: 259,447. Carpmael, W., (I. G. Farbenindustrie Akt.-Ges.). Feb. 8, 1926. Alkali chromates.-In treating chrome ores in a mechanical furnace with an alkali carbonate or hydrate, the ores used are ground so that a residue of the coarser particles of at least 15 and preferably not more than 30 per cent of the ore would remain on a screen of 4900 mesh to the square centimetre. The ground ore is mixed with 28-32 per cent of the carbonate &c. and treated at 1100‹ C. in an oxidizing atmosphere, the products being then quenched in water and the chromate liquor removed. The unattacked chrome ore in the residue may be separated from alumina, and magnesium and iron oxides by sedimentation or sorting processes, but the residue is preferably treated with a dilute acid of from 5-30‹ BÚ., insufficient acid to dissolve all the impurities, or excess of acid being used at a temperature below 60 C‹., or the residue may be treated with acid on the countercurrent principle.
Patent GB-413981-A (GB)
Title: Improvements in mechanical game apparatus
IPC: A63F5/04
Filed: 1933-05-03
Abstract: 413,981. Games of chance. GAUNT, C. F., Warstone Parade Works, Birmingham. May 3,1933, No. 3558/34. Divided application. [Class 132 (ii).] The game apparatus comprises a disc 34, rotatable between plates 10, 11, and having two series of concentrically arranged indications viewable through apertures 36, 37, respectively, in the upper plate 10, and a shutter 38, pivoted to the plate 10, and adapted to obscure one or the other of these apertures. The disc is spun by rocking a lever 20 about its pivot 21, the toothed end 23 of the lever engaging a skeleton gear wheel 25 (formed from a blank) rigid with the disc, and is stopped by pressing a lever 29 against the bias of a spring 32 until a nose 35 engages between the teeth of the gear wheel. The indications on the disc relate, for example, to a game of cricket, the inner series comprising numerals 1, 2-6 and an indication " How's THAT ? " Normally the game is played with this series of indications visible and when " How's THAT ? " appears at the aperture 36 the shutter is rocked to uncover aperture 37 and the disc again spun to indicate one of the penalties in the outer series of indications, for example, " caught," " run out " &c. Modifications. The indications on the disc may relate to any other outdoor game. The operating lever 20 may be replaced by a toothed rack adapted to mesh with the gear wheel 25, and two or more discs may be provided. Advertising matter may be incorporated on the plate 10 and/or on the disc 34, being viewed through the apertures 36, 37 or another aperture. According to the Provisional Specification stops may be provided to define the two positions of the shutter and the indications on the disc may comprise representations of animals, aeroplanes, dice marking, &c.
Patent GB-284733-A (GB)
Title: Submarine signalling cables
IPC: H01B7/14
Filed: 1927-02-21
Abstract: 284,733. Western Electric Co., Inc., (Assignees of Gilbert, J. J.). Feb. 27, 1926, [Convention date]. Divided on 266,714. Loaded cables; cables with artificially modified capacity ; armouring cables; cables, arrangement and disposition of parts of.- A submarine signalling cable is provided with a return path for the signalling current comprising helical conductors of high conductivity and having a large pitch. These return conductors may lie within the steel armour wires of the cable. The cable comprises a central conductor 5, loading tape 7, gutta-percha insulation 9, teredo tape 11 and helical steel armour wires 13 which are embedded in jute 15. The wires 13 may be individually wrapped with impregnated fabric tape 19. Helical copper wires 31 form the return conductor and are embedded in the jute 15 between the wires 13 and the tape 11. The wires 31 may be individually wrapped with tape 19. In a modification, the armour wires may be copper covered to serve as the return conductor. Specifications 184,774, 184,776. and 188,688 are referred to.
Patent GB-749409-A (GB)
Title: Improvements in record card controlled punching machines
Filed: 1954-02-08
Abstract: 749,409. Statistical apparatus. MAUL, M. Feb. 8, 1954 [Feb. 12, 1953], No. 3700/54. Class 106 (1). A record card controlled machine for group card control is characterized in that the item cards as well as the summary cards are fed past a punch with total punching being effected on the summary cards in usual manner, and that under the control of a card counter for the number of cards of a group, each item card is punched with the running number of its sequence within the group, and that upon total punching the punching mechanism is controlled by the card counter and that the punching device punches into the summary card the number of cards belonging to a group. The cards are fed from a magazine 11, Figs. 2 and 3, past the analysing brush Sb and past the punch L and bushes b after which the cards drop into a receiver 13. The cards are sorted into groups before insertion in the magazine 11 with a blank card between groups which bears a controlling hole adjacent one edge for initiating total taking. As the cards pass brush Sb, Fig. 3, each card without a control hole causes the counting mechanism Z to be advanced one step. After the card has been advanced to the punching mechanism L an impulse is sent from the counter Z to the mechanism L to punch the running card sequence number into the card. As the item cards pass the brushes b the latter analyse the amount data and the group number and transfer it to the accumulators or the storage device AD. At the end of a group of cards there is a card bearing the control hole, as described above, which through brush Sb inhibits the impulse to the card counting mechanism Z. When the summary card is under the punch it receives the same number as the last item card since the control hole has prevented any advance in the card counter. Simultaneously with the same marker being punched into the summary card, the data contained in the accumulators and the storage device AD is also punched into the summary card so that this card becomes in fact the summary card of the immediately previous group of item cards. The accumulator and storage device AD are then immediately reset. Fig. 4 shows the wiring diagram which utilizes a known impulse transmitter i<SP>1</SP>. When the last item card passes the analysing brush Sb and the summary card with its control hole follows up, cam contact n<SP>3</SP> closes and the circuit from brush Sb is not interrupted so that magnet Zm is shortcircuited by the brush Sb and cannot therefore respond. A circuit is also established by the relay S so that the latter responds actuating its contacts St and Stt. Relay H responds in the next cycle and total taking is initiated by movement of contacts hI to hIII. Finally, magnet E is energized to effect zeroizing of the card counter mechanism in known manner.
Patent GB-121552-A (GB)
Title: Improvements in or relating to the Bracing of Structural or Built-up Girders.
IPC: B64C3/18
Filed: 1918-03-02
Abstract: 121,552. Vickers, Ltd., McKechnie, Sir J., and Wallis, B. N. March 2, 1918 Framework.-A bracing A for light structural or built-up girders, such as are used in air-craft, is stamped or cut and moulded from wood, in a suitable die or press, forming a channel or rib a and turning up the edges a<1>. The bracing is secured at. the ends B by glueing or by rivets. A single thichness may be used, but ply-wood, glued together in layers before, during, or after cutting and moulding is preferred. For cross-bracing, additional flat lugs are formed at or about the middle.
Patent GB-633256-A (GB)
Title: Improvements in machines for drying grass and like crops
IPC: F26B19/00
Filed: 1948-02-09
Abstract: 633,256. Drying grass. OPPERMAN, S. E., and GANWICK ESTATES, Ltd. Feb. 9, 1948, No. 3719. [Class 34(ii)] A transportable grass drying machine comprises a wheeled unit having drying trays 12 pivotally attached to the main frame by spindles 13, the trays being raised for transport or lowered for use by a winch 14 and cables 16. Carried centrally on the main frame is a furnace 20 having a heated air outlet 21 which opens within a casing 22 surrounding the furnace and through which air is drawn by a fan 23, an inspection door 24 closed by a damper 25 being provided on the casing and air enters by gauze or mesh inlets 27. A mechanically driven oil burner 28 is coupled by belts 30, 33 and shaft 32 to the fan 23 which has an external pulley 34. Warm air is drawn from the casing 22 and delivered by the fan to a duct 37 which has delivery ports 38 controlled by dampers, each port having a flange co-operating with flanged inlets on the drying trays when the latter are lowered and the warm air then passes upwards through the trays. Each tray comprises an outer frame 44 having at the base 'thereof wire mesh, the casing 44 being divided by a partition 46 parallel to the longitudinal axis of the machine to form two compartments, the grass being placed in the outer tray first and then moved to the inner tray to complete the drying. Beneath the casing 44 are partitions forming ducts closed at the bottom by a plate 48, the air entering these ducts by ports 38. Hinged flaps may be provided on the casing 22 to extend, in the open position, over the trays so that some of the air passing through the trays is drawn back into the casing and recirculated.
Patent GB-305483-A (GB)
Title: Improvements in or relating to apparatus for severing flattened tubes of paper or like material into lengths
IPC: B31B19/14
Filed: 1928-04-13
Abstract: 305,483. Bates Valve Bag Corporation, (Assignees of Hartmann, C. H.). Aug. 5, 1927, [Convention date]. Divided on 295,008. Rotary-blade machines; cutting cylinders transversely.-In a machine for cutting a flattened paper &c. tube 93 into bag lengths 94, 95 with end portions of the shape shown in Fig. 5. knives 61 - - 64 are held on a bar 54 slidable in radial arms on a shaft 22 and co-operate with a grooved bar 71 slidable in radial arms on a shaft 23. A single transverse knife on a bar 87 diametrically opposite, the bar 54 cooperates with a bar 90. The bars are projected from the cutting operation by stationary cams engaging rollers attached to the ends of the bars. Waste portions 98 are impaled upon pins 84 on a bar projected by a stationary cam, and are discharged by a spring-urged ejector bar. The tube 93 is fed over a roller 50 freely mounted on a shaft 25 and is clamped during cutting by a clamp bar 46 adjustable on arms 47 carried by a shaft 24 urged by adjustable springs 101. The severed portions are fed away by clamp bars 52 on a shaft 26 engaging a roller 53 on shaft 27. The shafts of the machine are geared together so that the cutter bar 54 rotates at twice the speed of the clamp bar 46 and the clamp bar 52 is driven at a speed slightly greater than the clamp bar 46.
Patent GB-103035-A (GB)
Title: Improvements in Picking Mechanism for Looms for Weaving.
Inventor: RUSHTON WILLIAM BURTON
IPC: D03D49/24
Filed: 1916-03-14
Abstract: 103,035. Rushton, W. B., and Shaw, F. March 14, 1916. Picking-motions: checking shuttles.-A sliding rod E is reciprocated from an oscillating tappet shaft A through a connecting-rod C and crank B, and carries a pin G engaging a hole H in a loose eccentric bush K in an offset end of a connecting- rod M adapted to oscillate the picking-shaft A<1>. When the rod E is moved, the bush K is rotated a little in one direction before the picking-shaft is operated. The incoming shuttle causes, through the picker, picking-shaft, and connecting- rod M, a rotation of the bush in the opposite direction, and thus checks the shuttle. In the Provisional Specification, it is stated that the tappet shaft has an oscillating motion such as is described in Specification 16267/14, [Class 142 (i), Looms, Driving &c.].