baber/WOPTO huggingface dataset:
Patent GB-1301053-A (GB)
Title: A class "a" audio amplifier circuit
IPC: H03F3/187
Filed: 1971-06-04
Abstract: 1301053 Transistor amplifiers ATES COMPONENTI ELETTRONICI SpA 4 June 1971 [3 Nov 1970] '18975/71 Heading H3T A class A audio amplifier circuit adapted to operate directly from rectified mains voltage comprises an output stage which includes a first transistor T arranged to operate in the common base mode and adapted to be coupled to a load R via a transformer Tr and arranged to be driven by the collector current of a second transistor T3 operating in the common emitter mode, both transistors being of the non-current amplifying type, i.e. the ratio of A.C. collector to A.C. emitter current being less than unity. In the embodiment the amplifier comprises a first stage T1 operating in common collector mode, with its collector voltage stabilized by means of a Zener diode Z: the preliminary stages T1-T3 comprise an integrated circuit.
Patent GB-437940-A (GB)
Title: Improvements in and relating to air extractor ventilators
IPC: F23L17/02
Filed: 1935-07-03
Abstract: 437,940. Shaft tops. BARKER, W. H., 72, Coniston Road, Bromley, Kent. July 3, 1935, No. 19016. Addition to 398,019. [Class 25] The extractor ventilator or shaft top of the parent Specification is modified by the replacement of the inner and outer circular bands C by rectangular bands, the corners of the bands being secured to the corner plates D. The inner bands are preferably secured to the outer bands by means of radial rods b.
Patent GB-1451123-A (GB)
Title: Moulds for the production of ceramic products
IPC: B28B7/34
Filed: 1974-05-01
Abstract: 1451123 Moulding ceramics SYNTHESEWERK SCHWARZHEIDE VEB 1 May 1974 [3 May 1973] 19061/74 Heading B5A A mould for the production of ceramic products comprises a porous body 1 of a polyurethane material having an inadequate permeability to air, with an air permeable porous base 3 through which entrapped air can escape. The base is made by firing a mould composition of alumina, clay and synthetic resin; alternatively a porous metallic filler may form part of the mould base.
Patent GB-150510-A (GB)
Title: Improvements in and relating to steam boilers
IPC: F22D1/02
Filed: 1919-08-01
Abstract: 150,510. Webb, G. W. Aug. 1, 1919. Heating systems and apparatus.-Water-heaters 8 of the geyser type, preferably constructed as described in Specification 143,086, [Class 64 (i), Heating liquids &c.], are heated by the gases drawn from boiler flues by a fan 5, which discharges into a channel 4 below the heaters. The waste gases from the heaters are led off by a cowl 12.
Patent GB-120661-A (GB)
Title: Appliance for Giving a Warning of the Presence of Combustible Gases or Vapour in the Atmosphere.
IPC: G01N25/38
Filed: 1917-12-28
Abstract: 120,661. Williams, A., Williams, L. D., and Thames Trading Co. Dec. 28, 1917. Explosive and combustible gases, detecting.- Combustible gases or vapours in the atmosphere are detected by allowing the heat from an independent heating source together with the heat resulting from the combination of the gases &c. with air to effect the melting or softening of a rod, bar, disk, or like element which then breaks under its own weight or an applied tension and actuates an audible or visible signal. The combustion of the gases may be effected by a catalytic body comprising a meerschaum disk B, Fig. 4, coated or impregnated with finely divided platinum or palladium, the disk being surrounded by a preheating coil C and itself surrounding the acting element; this element may be a rod of tin or two rods A<1>, A<2> united by a fusible solder. The rods A<1>, A<2> may be of different metals so as to form a thermo-couple which is utilized in calibrating the instrument. As shown in Fig. 5, the acting element A, strained between springs E<1>, E<2> forms part of a circuit whereby an electro-magnet F holds an armature F<1> stationary; on fracture of the circuit in the presence of gas, the armature oscillates between the magnet and contact f<2> and actuates a bell f<4>. As shown in Fig. 6, on fracture of the element A, a spring E moves a lever H to release a cam K which is then rotated by a coiled spring H' and actuates the clapper L of a bell G. In a further form, the catalytic member surrounds the free end of a pivoted acting element which, when fused or softened due to the presence of gas, is moved by a spring to complete a bell circuit. In the form shown in Fig. 8, the acting element A is placed in a stream of air heated by a coil Q to such an extent that any gases present are burnt; a given percentage of gas rises the temperature sufficiently to fuse the element A, so breaking the circuit of an electro-magnet S, the armature s' of which then completes a bell circuit.
Patent GB-668802-A (GB)
Title: Improvements in or relating to electric discharge tubes and circuits therefor
Inventor: JACKSON THOMAS MEIRION
IPC: H03K17/52
Filed: 1950-08-01
Abstract: 668,802. Discharge apparatus. STANDARD TELEPHONES & CABLES, Ltd. Aug. 1, 1950, No. 19178/50. Class 39 (i). [Also in Group XL (c)] A cold cathode gas-filled discharge tube has a main discharge gap between anode 9, Figs. 1 and 2, and perforated cathode 16 and a second discharge gap between perforated anode 17 and cathode 13, the perforations in electrodes 16, 17 being aligned to permit the priming of one gap by the other. The strip electrodes 16, 17 are sandwiched between mica spacers 18, 19, 20 eyeletted together at 21 and are covered thereby except for small annular exposed portions. The electrodes are of nickel and the filling is a mixture of neon, argon and hydrogen in the proportions 92 : 1 : 7. The spacing between electrodes 16, 17 may be less than the mean free electron path to prevent discharge therebetween, but in the trigger circuit described (see Group XL (c)) discharges take place in succession between the pairs of electrodes 16, 17; 17, 13; and 9, 16.
Patent GB-530746-A (GB)
Title: Improvements in or relating to internal combustion engines comprising five or seven cylinders being charged by means of exhaust gas turbo-blowers
IPC: F02B37/00
Filed: 1939-07-01
Abstract: 530,746. Pumps. SCHWEIZERISCHE LOKOMOTIV-UND MASCHINENFABRIK. July 1, 1939, No. 19233. Convention date, July 2, 1938. Drawings to Specification. [Class 7 (ii)] In five- and seven-cylinder engines part only of the exhaust gases is used in one or more exhaust-driven turbo-blowers, the remainder being discharged either directly to atmosphere or into the exhaust conduit beyond the blowers.
Patent GB-256619-A (GB)
Title: Improvements in sanitary closets
IPC: A47K13/10
Filed: 1926-08-04
Abstract: 256,619. Haggenmacher, A. Aug. 4, 1926. Closets seats, operating means for.-The flush passing through a cylinder 1, Fig. 3, depresses a piston 4 into the dotted line position and raises the seat, a ring 11 on the piston passing over a spring 6 on a rod 7, retained in the position shown by a spring 9. Hand or pedal actuation of the rod 7 disengages the spring 6, and the spring 9 then raises the piston slightly to tilt the seat forward. The seat then closes by gravity, thus returning the piston to its upper position. In another form, the flush acts on a vane 4, Fig. 5, to move an arm 22 connected to the seat past a constriction 29, Fig. 4 into the upper portion of a slot in a rod 24, acted on by a spring 9 and connected to a pedal 27<1>.
Patent GB-166554-A (GB)
Title: Improvements in heating burners
IPC: F23D14/02
Filed: 1921-07-18
Abstract: 166,554. Gr³nbaum, E., (Assignee of Kuhlenschmidt, J.). July 17, 1920, [Convention date]. Void [Published under Sect. 91 of the Act]. Atmospheric gas and vapour burners. -A burner for heating purposes is provided with a burner head containing a mass of coarse granular fire-proof material extending substantially over the entire free burner surface. In one form, a burner head consists of a shallow circular container 1 closed at top and bottom by wide-mesh wire netting 2, 3 and filled with broken marble 4. A flange 6 is provided for attachment to a mixing-tube 5. The filling material must not absorb, or be decomposed or felted by the action of, moisture. When using petroleum, the burner is first heated with a more readily gasified fuel such as alcohol. Dimensions of the diameter of the fragments and the depth of the filling material are given.
Patent GB-756324-A (GB)
Title: Improvements in and relating to the recovery of sugar
IPC: C13B20/00
Filed: 1952-07-31
Abstract: In the extraction of sugar from sugar-containing liquor of natural origin, the liquor, after dilution if necessary, is treated e.g. at 60 DEG -62 DEG  and preferably not above 72 DEG C., with a soluble aluminium compound such as the sylphate or magnesium sulphate conjointly with an alkali metal carbonate e.g. sodium carbonate, at a temperature low enough to avoid the formation of saccharates thereby precipitating and bringing down colloidal organic impurities.  The aluminium compound or magnesium sulphate may be added first and the alkali-metal carbonate thereafter, the relative proportions being such that the final pH of the liquor is between 5 and 6.  After separating the treated liquor from the precipitate the liquor may be bleached and then passed over cation and anion base exchanges e.g. of the synthetic resin type whereby inorganic impurities are removed and most of the sucrose is inverted.  In an example 3,000 c.c. of a 25 per cent solution of blackstrap molasses diluted with slightly chlorinated water (2 p.p.m. chlorine) were heated to 62 DEG C. and 200 c.c. of 40 per cent solution of crystalline aluminium sulphate in distilled water were first added and then 100 c.c. of 19,66 per cent solution of anhydrous sodium carbonate in distilled water were added, and the liquid decanted and filtered and treated with animal charcoal. The decolourized liquor was then passed through anionic and cationic base exchangers of the resinous type, which treatment also removes those ionised particles (e.g. phosphates and ammonia) left by the animal charcoal, the liquid thereafter being concentrated in vacuo up to over 65 per cent of invert sugar.
Patent GB-912260-A (GB)
Title: Production of laminated articles
IPC: B27D1/04
Filed: 1959-06-08
Abstract: 912,260. Laminates. EBDON, T. J., EBDON, T. D., and EBDON, D. J., [trading as EBDON'S]. May 26, 1960 [June 8, 1959], No. 19499/59. Drawings to Specification. Class 140. [Also in Group XXIII] A laminated wood article comprises a plurality of adhesively-bonded plies or veneers arranged with the grain of adjacent plies or veneers running transversely, wherein the plies comprise an uneven number of which the, or each, pair of plies lying on both sides of a central ply consist of successively sliced cut veneers positioned on the two sides of the centre ply with the grain pattern coincident. The centre ply may be a rotary cut veneer or a plastic sheet, e.g. cellulose acetate or polyvinyl chloride. Additional plies to laminates of more than five plies may or may not be of matching plies. In the case where not all of the plies are matched pairs, the matched pairs are preferably disposed on the outer sides of the laminate. The plies are bonded by heat and pressure. Decorative surface plies consisting of wood or plastic sheet, as above, may be applied to one or both faces of the laminate.
Patent GB-404978-A (GB)
Title: Improvements in or relating to sewing machines
IPC: D05B15/00
Filed: 1932-07-11
Abstract: 404,978. Suitcase - sewing machines. UNITED SHOE MACHINERY CORPORATION, 140, Federal Stroot, Boston, U.S.A. July 11, 1932, No. 19524. Convention date, July 17, 1931. [Class 112.] In a machine for sewing and binding the edges of suitcases and the like, means are provided for applying the binding strip to the edges of the parts to be sown and for pressing the strip against the work during stitching. The work is fed by an awl mounted in a feed slide. In the case where the sides and bottom are not previously secured together, the stitching is carried out as follows : a treadle is depressed to swing the bearing 45 on which the presser foot carrier 43 is supported, in a direction to withdraw the presser-foot 35 to allow the work to be placed on the plate 9 with the edges passing into the guide 25, Figs. 3 and 6. The binding strip e is fed through the guide 19 which bends it to an L-shape. The strip is then passed into the guide 25 which is straddled by the bifurcations 36, 38 of the presser-foot, to bend the strap to a U-shape and position it round the edges of the side and bottom of the bag. The presser-foot 35 is then allowed to descend upon the work by the release of the treadle and the slide block 49 lowered into position by the spring finger piece 55. The stitching is then commenced, the awl 3 and slide 5 perforating and feeding the work, and the barbed needle 1 co-operating with suitable stitch-forming devices to produce a lock-stitch seam. The presser-foot is raised during the feeding movement of the awl. The workengaging face of the bottom portion of the slide block 49 engages the upper side of the binding strip and holds it firmly against the work to prevent creasing or stretching. The stitching proceeds till a corner of the bag is reached. The machine is then stopped and the slide block 49 is moved upwards till it contacts with the collar 63 on the presser bar 37, Fig. 3, by the finger-piece 55. The bag can then be turned upwardly, as shown in Fig. 8, to permit the corner to be turned, the sewing continuing during the turning. The block is lowered again then the straight edge is again reached. When the sides and bottom of the bag are already assembled and secured in position before presentations to the stitching machine, the work and strip e are placed in the machine as before. As the corner is already formed however, the corners are turned by tilting the bag as shown in Fig. 10, the leg 38 of the presser being shortened and bevelled to permit this turning movement.
Patent GB-403041-A (GB)
Title: Improvements in and relating to suppression layer photo-electric cells and process for the manufacture of the same
IPC: H01L21/16
Filed: 1933-07-10
Abstract: 403,041. Light - sensitive cells. ROTHER, F., 6, Bozenerstrasse, Schoneberg, Berlin. July 10, 1933, No. 19540. Convention date, July 8, 1932. Drawings to Specification. [Class 40 (iii).] Relates to copper-oxide light-sensitive cells of the " suppression-layer " type made by heating copper and scraping off the outer layer of cupric oxide. According to the invention the copper is, by sputtering, electrolysis, spraying or the like, finely coated with a metal such as gold, before being heated. An alloy may be used instead of copper, and coatings of more than one metal may be applied.
Patent GB-574231-A (GB)
Title: Improved electric hot plate for cooking ranges and other heating appliances
IPC: H05B3/72
Filed: 1943-11-23
Abstract: 574,231. Electric hot plates. MARRIOTT, C. W. Nov. 23, 1943, No. 19542. [Class 39 (iii)] A helical resistance wire 9 is placed in channels in a plate 6 and embedded in insulation 11 which also fills the space between rim 7 and boss 8. A closing plate 12 of slightly larger dimensions than the annular space in the hot plate is forced in under substantial pressure so that its edges bite into the metal of the hot plate, and the heating element and its packing are sealed. Buckling of the plate 6 due to warping of the rim 7 is prevented by forming the plate 6 with pressed radial ribs 13. In a modification, the closing plate 12 extends to an inner depending rim instead of to the boss 8, and at its outer edge is provided with locking tongues which are forced over lugs on the rim 7.
Patent GB-375563-A (GB)
Title: Improvements in or relating to heterodyne receivers
IPC: H03J3/28
Filed: 1931-07-07
Abstract: 375,563. Wireless receiving systems. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE, 12, Hallesches Ufer, Berlin. July 7, 1931, No. 19593. Convention date, July 7, 1930. [Class 40 (v).] Relates to means for ganging the tuning-controls of a superheterodyne receiver designed to cover two or more wave-bands. In the long-wave position of the wave-change bar B, as shown, the whole of the tuning-coil L is in the input circuit L, C, and co-operates with a condenser C1 in the circuit of the local-oscillator u. When the bar B is moved to the right, only the tapped portion of the inductance L is effective, whilst the condenser C2 replaces condenser C1 in the heterodyne circuit. The plates of the condenser C1, C2 are so shaped as to maintain a constant " beat " frequency throughout both wave-bands, when ganged with the condenser C. The output from the first detector valve g is passed to the intermediate-frequency amplifier Z.
Patent GB-1488567-A (GB)
Title: Process for resolving alpha-amino-caprolactam isomers
IPC: C07D223/12
Filed: 1975-05-09
Abstract: 1488567 Resolving α-aminocaprolactam isomers ALLIED CHEMICAL CORP 9 May 1975 [1 July 1974] 19671/75 Addition to 1404722 Heading C2C A process for optically resolving a mixture of D- and L-α-aminocaprolactam in the form of a complex thereof with a nickelous or cobaltous salt comprises contacting at ambient temperature to 120‹ C. a supersaturated solution of the starting complex, with seed crystals of a complex of a nickelous or cobaltous salt with an optical isomer of α-aminocaprolactam, the solution containing a basic catalyst for said racemization and optionally a complexing agent other than aminocaprolactam, the mole ratio of α-aminocaprolactam to nickelous or cobaltous ions in the solution being at least 3 :1, and the total amount of α-aminocaprolactam plus other complexing agent, if present, being sufficient to satisfy the co-ordination capacity of the nickelous or cobaltous ion in solution, and recovering a complex of that optical isomer of α-aminocaprolactam, which complex is precipitated from the solution. The isomer complex may be treated with strong mineral acid to form a salt, e.g. hydrochloride.
Patent GB-1135868-A (GB)
Title: Method for changing the configuration of and for bonding electrical coils of inductive devices
IPC: H02K15/00
Filed: 1967-04-28
Abstract: 1,135,868. Making coils. GENERAL ELECTRIC CO. 28 April, 1967 [11 July, 1966], No. 19713/67. Heading B3A. A method of bonding a pre-selected portion of an electrical coil as it is carried in its unformed state by a magnetic core and has bonding material on at least the pre-selected portion comprises, generating at least one surge of electrical energy in the unformed coil so as to change the coil configuration to a desired shape, and to bond the pre-selected portion with the bonding material. A laminated stator core having loosely wound coils 21-23 is placed on a rotatable fixture 33, which mounts a cylinder 35 formed with a number of raised surfaces 36. Each surface 36 has a protuberance which fits into a core slot and upright posts 38 hold the core in spaced relation above a plate 34. The fixture 33 is slowly rotated and a thermo-setting bonding resin is sprayed on to the coils by applicators 32. The stator is then transferred to a second fixture 40, which includes an insulated cylinder 42 of non- magnetic material, such as copper or aluminium. Wire terminations 47, 48 of the coils are connected to an electrical energy surge source 50. A capacitor bank in the source 50 is discharged to pass a current through the coils, thereby creating interacting and opposed magnetic fields around the cylinder 43 and coils to compact the coils in the core slots and push back the end windings. The bonding material is then cured. The heat generated in the coils may be sufficient at least partly to cure it. Alternatively, the wire may be coated with bonding material before being wound into the coils. When using an epoxy resin such as polyvinylbutyral the coils are preferably heated to soften the resin before applying the electrical surge, but with high resistance wires the surge may generate sufficient heat to soften the resin. Alternatively, a self-bonding material having small membranes of toluene solvent dispersed therein may be used as a covering. During press-back, the membranes are crushed so that the solvent escapes thereby producing an adhesive quality for the material. When the solvent has evaporated the material will return to its original non-adhesive condition, with the material between the turns becoming a homogeneous mass to secure the turns.
Patent GB-224004-A (GB)
Title: An improved carrier velocipede
IPC: B62K7/00
Filed: 1923-08-03
Abstract: 224,004. Merrett, E. L. Aug. 3, 1923. Carrier velocipedes; bicycles.-A frame for a carrier bicycle comprises a top tube 8, head 9, tubes 3, 22, 17, 15, a vertical strengthening-tube 19, and, if desired, an additional strut 20. A cupboard 26, fitted with a door 27, is secured in the front part of the frame, as by detachable clips 25. The bottom of the cupboard may be provided with one or more hinged supports 29, which are fitted with a flat foot or a spike, and when not in use may be turned into an horizontal position supported by a bracket &c. 30. If the bicycle is too long for convenient steering, it may be provided above the tube 19 with a second pair of handle-bars connected to the front pair by links or cables.
Patent GB-1142115-A (GB)
Title: Filament-containing foam composite
IPC: C08J9/00
Filed: 1967-05-01
Abstract: 1,142,115. Coating cores by extrusion. W. R. GRACE & CO. 1 May, 1967 [5 July, 1966], No. 20031/67. Heading B5A. [Also in Division D1] A twine cord or rope consists of a filamentcontaining foam composite containing at least 3 continuous orientated poly-(α-olefin) filaments embedded with a foamed thermoplastic material which has a m.p. below that of the poly- (α-olefin). Additionally; (a) at least one of the filaments is of denier 8 to 1200; (b) the foamed thermoplastic has a density of 10-80% of its density in the unfoamed condition; (c) 10- 100% of the thermoplastic material is within the outer perimeter of the fibres; and (d) the composite has an average diameter of 0À6-25mm. The composite is made by applying stress to an assembly of at least three of the filaments, applying a thermoplastic composition containing a blowing agent to the interior of the assembly of filaments, e.g. by extrusion, at a temperature above the decomposition temperature of the blowing agent but below the m.p. of the fibres, cooling the composite then removing the stress from the fibres. The thermoplastic material can be polyethylene, polypropylene or polyvinyl chloride. The thermoplastic material can contain delusterants, fillers and flame retarding fillers, e.g. aluminium silicate, asbestos, titanium dioxide, carbon black and silica. The blowing agent can be gaseous, volatile fluorocarbons and specified gas-liberating organic compounds. There may be used 0À05-10% wt. of the blowing agent in the thermoplastic material. The filaments can be combined with the foamed thermoplastic material by extruding the assembly of filaments through a wire coating die modified by drilling the guider tip with a plurality of holes so as to maintain the filaments in a spaced relationship and the extruded product can be cooled in a water bath. The extruded product can be passed through a conventional die having a single-holed guiding tip. The composite produced can be bundled into a tow and extruded through a conventional heated wire coating die, see Example 8.