baber/WOPTO huggingface dataset:
Patent GB-409405-A (GB)
Title: Improvements in apparatus for interrupting carrier current
IPC: H04J1/14
Filed: 1932-11-04
Abstract: 409,405. Valve generating-circuits. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, and BERRY, D. W., c /o General Electric Co., Stoke, Coventry. Nov. 4, 1932, No. 31169. [Class 40 (v).] In an interrupted carrier-wave generator wherein the interruptions are produced by applying sufficient negative bias to an oscillating valve, the valve is normally biassed by a condenser shunted by a leak resistance and the extra bias for interrupting the oscillations is obtained by disconnecting the leak resistance. This arrangement may be used for generating the special signals described in Specification 381,620. When contact 13 is closed manually or by a relay (not shown), relay 6 in the anode circuit of valve 1 operates and at 5 opens the circuit of leak resistance 4 whereupon negative potential builds up on the grid, anode current decreases, and relay falls back to repeat the cycle. When relay 6 pulls up it is held for a predetermined time by charging current for condenser 10, and when it falls back it remains unoperated for a further predetermined time since initial anode current will flow mainly from the condenser. By making grid condenser 3 relatively large or by permanently shunting it with a leak of suitable value, the carrier current is only partially interrupted. The signals are tapped off the coupling coil 15 and applied over an amplifying valve 17 to the transmission channel.
Patent GB-487479-A (GB)
Title: Improvements in cam gearings for calculating apparatus
IPC: G06G3/00
Filed: 1937-11-13
Abstract: 487,479. Calculating - apparatus. ZEISS, C., [Firm of]. Nov. 13, 1937, No. 31191. Convention date, Nov. 27, 1936. [Class 106 (i)] [Also in Group XXIV] In cam gearing for use in calculating- apparatus for determining a function of two variables, a cam is employed to which two rotational movements, which may be about axes at right-angles, are imparted. A shaft 2 has journalled thereon integral bevel wheels 5, 6, integral wheels 7, 8 and fixed thereto a wheel 17. The wheels 6, 7 form part of a differential gear with planet 9 rotatable about a spindle 10 fast on the shaft 2. Wheel 5 meshes with a wheel 12 on a shaft 11. Wheel 17 meshes with a wheel 16 rigid with a shaft 15 to which a bracket 18 is secured. Wheel 8 meshes with a wheel 13 on a hub 14 loose on the shaft 15. A wheel 25 rigid with the hub 14 gears with a wheel 24 rigid with a pinion 21 which meshes with a pinion 20 on a shaft 19 which carries an arm 26 to which is fixed the cam 27. A single feeler 28 is held to the cam by a spring 33 and actuates a shaft 32 through gearing 30, 31. Rotation of the shaft 2 produces a rotation of the shaft 15 and of the cam about an axis X-X. Rotation of the shaft 11 produces rotation of the pinion 20 and of the cam about an axis Y-Y. The differential gear 6, 7, 9 is provided to compensate for the small rotation of the cam 27 about axis Y-Y during rotation of the shaft 2. This gear may, however, be dispensed with and the wheels 5, 8 rigidly connected when the rotation referred to has been taken into account in forming the cam.
Patent GB-956743-A (GB)
Title: Light-weight portable fire extinguisher
Inventor: MCCROSSAN PATRICK
IPC: A62C13/00
Filed: 1962-08-14
Abstract: Portable fire-extinguishers of the pressurized type are constructed by forming two cups from a thermosetting resin by moulding, the cups being capable of being sealably joined together, e.g. by a screw-thread to form a reservoir, one of the cups being formed with two apertures at or near its otherwise closed end into which a striker mechanism and a hose fitment may be sealed.  Specified thermosetting resins are polyester and epoxide resins especially the so-called "Dough-Moulding Compounds" which may be reinforced, e.g. with glass fibre.
Patent GB-467493-A (GB)
Title: Improved method of distilling coal and other carbonaceous material
IPC: C10B49/18
Filed: 1935-11-12
Abstract: 467,493. Coking processes. MORGAN, J. S. Nov. 12, 1935, No. 31209. [Class 55 (i)] Coal or the like is destructively distilled by being added to a mass of incandescent coke with which it is intimately mixed, part of the coke produced being intermittently or continuously removed and the coke mass being kept incandescent by an intermittent air blast to which steam may be added. A rotating drum 1 may be used having four air boxes 2, with grates 5 to support the fuel, a duct 3 leading through a heat-exchanger 14 to a fan 7. The neck 4 of the drum extends into a chamber 8 with gas valve 10, dust catcher 9, and coke hopper 12. Air is blown by the fan through the coke until it is at a red heat, the combustion gases passing through the heat-exchanger 14 and valve 15 to an outlet 13. Valve 15 is then closed, and valve 10 opened, coal is flung into the drum by the flinging device 16 from a hopper 17. the charge is agitated by rotation of the drum, the distillates escaping through valve 10. The coked residues falls into the hopper 12. Steam or carbon dioxide may be added during the air blast, and steam may also be injected during the distillation period, or the distillation period may be alternated with a steaming period. Secondary air may be used to burn the gas produced during the blowing period. In a modified form of apparatus, a stationary receptacle is employed in which the charge is agitated by spiral agitators. When treating a low grade fuel, a high grade fuel may be mixed therewith, and oil or tar may be sprayed in during the distilling period, or subsequent thereto. Specification 419,444 is referred to.
Patent GB-1063144-A (GB)
Title: Semiconductor switching arrangement
IPC: H03K17/72
Filed: 1964-08-04
Abstract: 1,063,144. Semi-conductor devices. COMPAGNIE GENERALE D'ELECTRICITE. Aug. 4, 1964 [July 30, 1963], No 31240/64 Heading H1K [Also in Divisions F1, H2 and H3] A five layer semi-conductor switching device of the kind described in Specification 1,056,578 is used in an ignition circuit for an internalcombustion engine The semi-conductor device comprises five layers of alternate conductivity types, the end layers being highly doped, the middle layer being of high resistivity and the intermediate layers being moderately doped. Main electrodes are provided on the end layers and a control electrode is provided on the middle layer. The device is such that it is conductive and non-conductive when the potential of the control electrode is respectively higher and lower than the potentials of both main electrodes. In an embodiment, Fig 3 (not shown), the semi-conductor device is connected in series with the primary winding (T1) of a transformer (T), a voltage source (V) and a resistor (R 3 ). The control electrode is connected to the positive terminal of the voltage source via two resistors (R1, R2), the junction between which can be earthed by means of a switch (S1) mechanically linked to the transmission system. When the switch (S1) is open the semi-conductor device conducts and the magnetic circuit of the transformer saturates so that when the switch (S1) is closed making the semi-conductor device non-conductive a voltage pulse is induced in the secondary winding (T2) of the transformer (T). The mechanical switch (S1) may be replaced by an electronic switch, Fig. 4 (not shown), comprising a transistor (Q) driven by a signal generator (K) which may comprise a photo-cell periodically illuminated in synchronism with the engine shaft or a winding in which an E.M.F. is induced by a rotating magnet driven by the engine shaft. The semi-conductor device is self-protecting and if, when it is non-conducting, the potential applied to the main electrodes exceeds its breakdown voltage it switches to the conductive condition.
Patent GB-490980-A (GB)
Title: Improvements in and relating to hydraulic presses
IPC: B30B15/04
Filed: 1937-11-15
Abstract: 490,980. Hydraulic presses. SHAW & SONS (SALFORD), Ltd., J., and SHAW, J. B. Nov. 15, 1937, No. 31275. [Class 69 (ii)] In a hydraulic press the main frame is in one piece, of steel, and the movable platen is integral with the main hydraulic cylinder which is also of steel and slides on a fixed ram secured within and to one end of the one-piece frame. The main frame a is a one-piece steel casting or forging, resting on pedestals a<1>. A filling member f positioned in the frame by projections f<1> and secured by bolts g forms the lower platen. The upper platen k is integral with the cylinder j which slides on a ram d secured by a flange e and bolts to a filling member b secured by bolts c to the main frame. Extensions k<1> on the platen slide on guiding pillars i mounted in lugs h integral with the frame; nuts il serve to adjust the tension in the pillars. Push-back rams l engage side extensions k<2> on the platen. Pressure is admitted to cylinder j through passage r in the ram d and is exhausted by valve o counterweighted at p and operated by a servocylinder q, the valve also serving for the admission of slack water to the cylinder from the reservoir n. The cylinder is of a size such that at least one diameter will overlie the full operative width of the tools placed on the fixed platen.
Patent GB-442688-A (GB)
Title: Improvements in or relating to machines for closing bottles
IPC: B67B3/12
Filed: 1934-10-31
Abstract: 442,688. Capping bottles. BLAXTER, A. P., BLAXTER, A. P. L., and BLAXTER, C. G., (trading as BARNETT & FOSTER), Niagara Works, Eagle Wharf Road, Hoxton, London. Oct. 31, 1934, No. 31290. [Class 125 (ii)] A crowning head for a machine for sealing bottles with crown. corks is provided with means to eject the crowned bottles forcibly past the lip of the crowning die. An internal plunger 8 is lowered past the lip 21 to eject the bottle after the crowning operation. The plun. ger 8 is loaded by a spring 10 and is raised after each bottle is ejected. The movement of the plunger is limited by a stop 11, and is controlled by a cam 18 which moves in synchronism with the bottle-lifting mechanism.
Patent GB-490516-A (GB)
Title: Improved filters which absorb ultra-violet light
IPC: G03C1/815
Filed: 1936-11-16
Abstract: 490,516. Photographic colour filters. GROVES, W. W. (I. G. Farbenindustrie Akt.- Ges.) Nov. 16, 1936, No. 31291. [Classes 97 (i) and 98 (ii.)] In a filter layer suitable for photographic purposes and which absorbs ultra-violet light, more especially one which is superimposed on a light-sensitive photographic layer, the layer forming colloid contains as the active ingredient a colourless or slightly coloured substance which absorbs ultra-violet light and is fast to diffusion in the colloid. The active ingredient contains in the molecule the residue of a substance which absorbs ultra-violet light, such as 2-oxychrysene-8-carboxylic acid, 2-oxyanthracene-3-carboxylic acid, 2-oxychrysene, 3-oxy- and 3-aminopyrene, umbelliferone, methylumbelliferone and other derivatives of umbelliferone, fluorene and its derivatives, and derivatives of naphthalene. A suitable molecular residue is also included to impart fastness to diffusion. Examples are carbamide derivatives such as the carbamide from 2 mol. para-aminobenzoyl - para - phenylaminediamine sulphonic acid, benzidine derivatives such as the benzidide of 2 : 3-oxyanthracene carboxylic acid, derivatives of diamino-stilbene, of diaminodiphenylurea, of dia,minodiphenyl thiourea, or of aminobenzoyl and benzilidine compounds. Heterocyclic residues, particularly those containing the cyanuric ring, may also be used. Substances containing carbon chains of five or more atoms may be used, as, for example, aliphatic residues, fatty acid residues, carbohydrate residues, residues of a peptide character, for example of natural albuminous substances or of degradation products thereof, or polymerizates from ethylene oxide and its analogues and homologues. Examples of such substances are stearic acid chloride, cetyl iodide, ethylene imines, serum albumin, rice starch, undecylic acid chloride. Instead of a chain structure hydrogenated rings may be used as in perhydro-4-aminodiphenyl, #-aminodecaline or 4 : 4<1>-diaminodecahydrodiphenyl. Alternatively, there may be used a residue of a constituent of high molecular weight of a natural resin or of a conversion product of such a constituent, such as abietic acid. Sterols or their conversion products such as chloresterol dicarboxylic acid or its scission products may also be used. Specification 436,587 is referred to.
Patent GB-1067567-A (GB)
Title: Separating isotopes by electrodialysis
IPC: C25B7/00
Filed: 1964-08-04
Abstract: Isotopes, e.g. of U, Li, Ca, B, H, N, Cl or C, are separated as ions in a solution by electrodialysis in a cell comprising alternate desalting (A1 - A5 ....) and concentrating (B1 - B4 ....) compartments arranged between a cathode and an anode, each desalting compartment having an anion exchange membrane (a1 - a5 ....) on its anode side and a cation exchange membrane (c1 - c5 ....) on its cathode side and each concentrating compartment having a cation exchange membrane on its anode side and an anion exchange membrane on its cathode side, wherein the solution containing the isotopic ions is fed into an input desalting compartment (A1) and D.C. is passed between the electrodes, whereby ions of smaller mass migrate more rapidly through respective membranes to the adjacent concentrating compartment (B1, B3) than ions of larger mass and are obtained from spaced compartments.  A part of the solution of each concentrating compartment may be fed (via pipe X) to the adjacent desalting compartment on the cathode (or anode) side thereof and a part of the solution of each desalting compartment may be refluxed (via pipe Y) into the second adjacent desalting compartment on the anode (or cathode) side thereof to effect further ion migration and separation. Isotopic cations and anions may be separated in the same cell, concentrating the cations in compartments on the cathode side and anions in compartments on the anode side.  The exchange resins may consist of a styrene - divinyl benzene copolymer, having radicals of sulphonic, carboxylic or phosphoric acid, or hydroxyl radicals, for cation exchange, and amino or quaternary ammonium radicals for anion exchange.  The polarity of the D.C. may be periodically reversed or D.C. with superposed A.C. may be employed.  Examples of isotopic ions to be separated include Li6 from Li7 in an electrolyte containing LiOH, and U235 from U238 in an electrolyte containing sulphuric acid, uranyl sulphate and uranous sulphate.
Patent GB-281640-A (GB)
Title: Improvements in motor-locomotives
IPC: B61C9/10
Filed: 1927-11-22
Abstract: 281,640. Buchli, J. Dec. 4, 1926, [Convention date]. Void [Published under Sect. 91 of the Acts]. Controlling two power units; interlocking and guarding against wrong movements. - In an internal-combustion engine locomotive having twoseparate engines I, II and change-speed gears 7, 7<1>, each change speed gear has independent controlling means so that while one gear is being changed the other may be kept driving to avoid a complete interruption of the transmission of power to the driving wheels 4. The two gear-controlling means may be interlocked so that the gears are changed alternately, the steps of one gear always following those of the other. In the construction shown the engines are mounted on trucks 1, 2 coupled together at 3, and drive the wheels through flexible couplings 6, 6<1>, gears 8 - - 11 and rods 13, 14.
Patent GB-1404279-A (GB)
Title: Acoustic feedback stabilization system particularly suited for hearing aids
IPC: H04R3/00
Filed: 1973-07-02
Abstract: 1404279 Hearing aids AMBITEX CORP and CENDEV CORP [trading as AMBITEX CO] 2 July 1973 [24 July 1972] 31433/73 Heading H4J An acoustic amplifying system, such as a hearing aid, has a microphone 24 electrically coupled through a phase-inverting amplifier 26 to a loud-speaker 27, their diaphragms being acoustically coupled by an adjustable 32 communicating passage 31 of length less than one quarter wavelength of the highest frequency to be handled, thereby providing variable overall negative acoustic feedback to improve linearity and reduce distortion. The amplifier has negative feedback to compensate the combined -24 db./octave roll-off of the microphone and loud-speaker to an overall -6 db./octave roll-off above 5 KHz.
Patent GB-488525-A (GB)
Title: Improvements in or relating to domestic cookers or ovens
IPC: F24C15/32
Filed: 1937-11-16
Abstract: 488,525. Oven stoves. FALK, STADELMANN, & CO., Ltd., and RICHARDSON, W. H. Nov. 16, 1937, No. 31457. [Class 126] In a domestic cooker in which air enters the oven at the base, is heated, for example by electric heaters 21, in a passage 19, then enters the oven compartment 14 adjacent to its roof, descends to heat the goods therein, and passes out through an enclosed conduit having an inlet 23 adjacent to the base of the compartment and an outlet 27 adjacent to the roof of the oven, the exhaust conduit includes a member 25 which is located between an outer cover plate 26 of the oven and an outer wall 20 of the air passage 19, the conduit being imperforate except at its ends so as to prevent return flow of exhaust air into the air inlet stream. The member 25 is of inverted-T-shape. Pipes 23 lead from the ends of the arms of the member 25 across the passage 19, and open into the food compartment 14. The latter may be bodily withdrawn from the oven.
Patent GB-267237-A (GB)
Title: Improvements in means for prevention of unauthorised use of internal combustion engines
IPC: B60R25/044
Filed: 1925-12-14
Abstract: 267,237. Gadsby, F. C. Dec. 14, 1925. Locking.-To prevent unauthorized use of an internal combustion engine, the induction pipe is fitted with an extra-air valve which can be locked in a position to admit air which would dilute the mixture to such an extent as to render it valueless as a working medium. The extra-air valve 16, Fig. 1, is secured to the dashboard 15 of a vehicle, and the stem 17 passes through a locking plate 19 and is cut away at 18 to engage a bush 36 securely held in the casing of a lock 22, which is provided with an actuating handle 20. The lock has a camplate 24, Fig. 4, adapted to be rotated by a key 23 and provided with projections 25, 26 which may engage a stop pin 27. The plate, when rotated, acts upon a projection 28<a>, Fig. 8, of a spring-loaded bolt 28, another projection 30 on which is adapted to enter a keeper or recess 31, Fig. 7, in a circular raised part 37 of the plate 19. A spring-pressed ball 33 in the lock casing is adapted to engage shallow recesses 32 in the plate 19 to hold the valve in certain positions. In a modified form, Figs. 10, 11, and 12, the stem of the actuating arm 43 is rotatably screwed into the lock casing 42 and is recessed at 44 to receive the reduced end 41 of the air valve stem 40. A spring-loaded pin 47 is adapted to enter one or the other of recesses 45, 46 in the lock casing when the arm 43 is moved to the "off" and "brake" positions. A hole 49, Fig. 12, is normally adapted to receive a plug 50 which is loaded by a spring 51, Figs. 10 and 12, and also by a lever 52 pivoted at 52<a> to lugs in the casing. The other end of the lever engages a plunger 53, Fig. 11, having an opening 54 to correspond with an opening 55 in the casing, so that a padlock 57 may be passed through both openings to lock the plunger. A further spring 58 keeps the lever 52 and plunger in the locked position. To lock the control, the arm 43 is rotated to bring the pin 47 opposite plug 50, which it depresses, and locks itself in this position. This turns the lever 52 to force the plunger 53 to the position where the holes 54, 55 coincide. To unlock the device the padlock is removed and the plunger 53 pushed inwards.
Patent GB-1301768-A (GB)
IPC: F21V29/15
Filed: 1971-07-06
Abstract: 1301768 Masks SOC ANON POUR L'EQUIPEMENT ELECTRIQUE DES VEHICULES SEV MARCHAL 6 July 1971 [23 July 1970] 31608/71 Heading F4R In a vehicle foglamp or headlamp the mask blocking the light beams emitted by the light source 5 in a forward direction is formed as a compound mask of two parts, the first part 8 masking the bulb and the second part 9 acting as a heat shield to prevent damage to the glazing 7 of the lamp by the heat from the first part 8, the two parts being separated by air or other thermal insulating material. The inner surface of the inner part and the outer surface of the outer part are reflective, and the surfaces of the parts which face one another are black and matt. The outer part has legs which mount it on the lamp body and the inner element has legs connecting it to the legs of the outer element, Fig. 2 (not shown), the point of connection being distant from the zone of maximum heating of the mask.
Patent GB-1272981-A (GB)
Title: Dishwashing machine
Inventor: WRIGHT KENNETH FRANKLIN ARTHUR
IPC: A47L15/00
Filed: 1969-06-23
Abstract: 1,272,981. Reciprocating conveyers. EXCELTRONIC INDUSTRIES Ltd. 23 June, 1969, No. 31627/69. Heading B8A. [Also in Division A4] A reciprocating conveyer in a dishwashing machine (see Division A4) comprises a dishsupporting rail which is reciprocated between a loading station and a washing station, the dishes being transferred at the washing station to a stationary rack. In one embodiment the dish conveyer comprises a stationary rack extending throughout the loading, washing, and unloading stations and having longitudinal wires 57 interdigitated with longitudinal wires 60<SP>1</SP>, 611 of two movable racks 60, 61 supported on tracks 62. The wires 60<SP>1</SP>, 611 are lifted above the wires 67 by raising the tracks 62 by links 66 actuated by a reversible electric motor 63 via a linkage 76, 76<SP>1</SP>. In operation the motor 63 is rotated in such direction that a clutch 65 is engaged for driving a roller 70 around which is looped an endless cord 71 connected by a hook 74 to the movable rack 61, so that the latter is moved from the unloading station to engage the rack 60 at the loading station and to be coupled thereto by a latch 92 (Fig. 18, not shown). The motor 63 is then reversed to raise the racks 60, 61, and move them to the washing and unloading stations, respectively, where the latch (92) is released, and the motor 63 is reversed to lower the racks 60, 61. The rack 60 is then returned to the loading station by a weight 91. In an alternative embodiment (Figs. 20 to 28, not shown) the conveyer is driven by pneumatic piston and cylinder devices.
Patent GB-316325-A (GB)
IPC: C08G63/672
Abstract: 316,325. Imperial Chemical Industries, Ltd., (Assignees of Lawson, W. E.). July 27, 1928, [Convention date]. Adhesives.-Adhesive compositions for use in the manufacture of safety glass comprise, synthetic resins containing ether groups, which are prepared by heating polybasic carboxylic acids or their anhydrides with ether-alcohols containing at least two free hydroxy groups to temperatures or from 175‹ C. to 250‹ C., ensuring complete esterification. Specified polybasic acids are phthalic and succinic acids. The ether-alcohols mav be monomethylin, monoethylin, other monoalkyl ethers of glycerine, monoaryl ethers of glycerine, or monoalkyl monoaryl, dialkyl, or diaryl ethers of pentaerythritol, mannitol or sorbitol. Such compositions may include cellulose derivatives, and modifiers of the types used in the preparation of glycerine-phthalic anhydride resins.
Patent GB-501725-A (GB)
Title: Improvements in portable electric torches
IPC: F21V19/02
Filed: 1938-11-02
Abstract: 501,725. Electric - battery lamps. CHLORIDE ELECTRICAL STORAGE CO., Ltd. Nov. 2, 1938, No. 31702. Convention date, Nov. 12, 1937. [Classes 39 (ii) and 75 (iv)] In an electric - battery lamp in which the bulb-holder f is slidable axially in relation to the reflector for focusing purposes, the lens and reflector unit c is beaded over an aperture in the top b of the case, so as to be rotatable but not axially movable therein, and the throat d of the reflector is formed with an annular slanting edge e which rides against a correspondingly inclined ridge h on the bulb-holder f, the latter being axially movable on guides g which prevent its rotation. The reflector and bulbholder are held in contact by the currentconducting blade-spring i, axial adjustment of the bulb-holder being effected by rotation of the unit c. -