baber/WOPTO huggingface dataset:
Patent GB-929183-A (GB)
Title: Improvements in or relating to electric oscillators
Inventor: BERRY ALLAN DAVID
IPC: H03B5/40
Filed: 1960-01-21
Abstract: 929,183. Automatic amplitude control. GENERAL ELECTRIC CO. Ltd. Jan. 20, 1961 [Jan. 21, 1960], No. 2254/60. Addition to 873,786. Drawings to Specification. Class 38 (4). [Also in Group XL (c)] An amplitude-modulated oscillator as in the parent Specification has means to limit the oscillator output, comprising a second feedback path connected through an amplitude detector to the base of a transistor having an emitter circuit common to one of the amplifier transistors of the oscillator but normally cut off except when the second feedback exceeds a certain value whereupon it becomes conductive to reduce the emitter voltage and gain of the associated transistor in correspondence with any rise in output of the oscillator. The second feedback path may also, through a further detector, bias conductively the modulator transistor acting as a switching impedance for the unidirectional modulation input to the oscillator. The output may be rectified so that the circuit is a D.C. amplifier.
Patent GB-1146243-A (GB)
Title: Improvements in or relating to a locking device for a loose-leaf binder
IPC: B42F13/28
Filed: 1967-01-16
Abstract: 1,146,243. Filing papers. J. E. S. I. OHLSSON. 16 Jan., 1967, No. 2291/67. Heading B6E. A locking device for a loose-leaf binder of the type in which the back 1 is formed by two hingedly interconnected back halves 2, 3 each having at least one locking member 5, 6; 7, 8 integrally formed with and at rightangles to the back in a synthetic plastic and formed with conforming recesses and projections, at least one in each pair of locking members being movable for operation against its inherent resilience away from the other of the pair. Separation of the locking members 5, 6; 7, 8 is effected by a longitudinally movable member 12 slidable in an end strengthening plate 17. In a modification the member 12, Fig. 3, not shown, is formed as an extension of the back which is bent angularly at (19) and thence back parallel to the back as at (13).
Patent GB-1413093-A (GB)
Title: Electrical contacts and connectors
IPC: H01R12/38
Filed: 1974-01-18
Abstract: 1413093 Two part coupling AMP Inc 18 Jan 1974 [30 Jan 1973] 02380/74 Heading H2E To make multiple connections between coaxial cables, mating connectors comprise female contacts 16 or male 16<SP>1</SP> inserted into insulating housings 32, the channel section 23 of each contact 16 or flat section 23<SP>1</SP> of 16<SP>1</SP> entering a passage 34 in which detent 25 or 25<SP>1</SP> latches behind an internal shoulder (35, 35<SP>1</SP> in Fig. 5, not shown). Cables 2 have a braided or metallized plastics outer conductor traced by a bare "drain" wire 10, inside an insulating sheath. Grooves 38, rising from near the centre plane of housing 32 at the rear, over a hump (37, Fig. 5, not shown) and branching into twin grooves 40, 42, carry cables 2; the inner conductors and drain wires are led down separate branches and are inserted into and are trapped by slots 24 in side-by-side female contacts 16 or slots 24<SP>1</SP> in male contacts 16<SP>1</SP>. Traylike cover-plates 44 are clamped by bolts through holes 58, 51 on both faces of housing 32, the rear edges 50 forming cable grips, recesses 56 co-operating with humps (37) in grooves 38 to clamp the cables additionally, and leading edges 54 forming a contact shroud. In the male-contact connector, edges 54 are modified to form a wider shroud fitting outside that of the female-contact connector. On mating, strips 22<SP>1</SP> of the male contacts 16<SP>1</SP> enter between the spring contact arms 26 formed in the widened ends of the side walls 20 of the the female contacts 16. In a second embodiment (Fig. 8, not shown) connectors with female-contacts, arranged in a stack of housings with a cover-plate at each end, each connect a coaxial cable to a pair of contact pins projecting from the face of a printed circuit board. Spring arms 26 on the contacts 16 are bowed inwards to engage the pins. In a third embodiment (Figs. 9, 10, not shown) uncut coaxial cable is bared over a short length, leaving only inner conductor and drain wire, and is fed down a branched groove in a connector housing and up a similar groove on the opposite face, the inner conductor and drain wire being led down their respective branches and through slots 24 in side-by-side female-contacts, again with bowed spring arms 26. The whole connector, formed from the housing inside an insulating casing, allows a tapping to be made along the length of the cable to a pair of contact pins. Cables other than coaxial may be connected by the connectors.
Patent GB-934646-A (GB)
Title: Circuit arrangement for the connexion of a load to a coaxial lead
IPC: H05K7/14
Filed: 1961-01-20
Abstract: 934,646. Matching impedances. FERNSEH G.m.b.H. Jan. 20, 1961 [Jan. 21, 1960], No. 2383/61. Class 40 (8). A circuit for connecting a load to a coaxial line comprises an impedance, e.g. an inductance 9, connected in series with the line and forming with the input capacitance 12 of the load a half section whose cut-off frequency is higher than any signal frequency transmitted through the line. The inductance 9 may be provided by an air-cored coil and the tapping 11 to the load may be made on either side of the coil. The impedance of the half section is matched to the characteristic impedance of the line at the signal frequency. Numerous tappings of this kind may be made to the single length of line. Fig. 1 shows a known arrangement in which the load is matched to the line by means of a bridged-T section.
Patent GB-996116-A (GB)
Title: Shoe lasting machine
IPC: A43D21/12
Filed: 1963-10-03
Abstract: The subject-matter of this Specification is identical with that described in Specification 996,113 but the claims differ. Specification 963,723 also is referred to.
Patent GB-1377401-A (GB)
Title: Method of and apparatus for manufacturing a pipe with inner grooves
IPC: B29C48/09
Filed: 1972-01-18
Abstract: 1377401 Extruded pipe with helical interior grooves INDUSTRIELE ONDERNEMING WAVIN NV 18 Jan 1972 [18 Jan 1971] 2422/72 Heading B5A [Also in Division F2] An extruded polyvinylchloride, polyethylene, or polypropylene pipe, Fig. 3, comprises a circular section outer surface 12, and an inner surface provided during extrusion with ribs 7 and grooves 8 which extend helically to the tube axis, and which may alternate along the tube with axially extending ribs and grooves. Openings 15 may be drilled through the extruded pipe. The ribs and grooves of the inner surface are defined by similar but longitudinally extending ribs and grooves of the extrusion mandrel around which the pipe is extruded, and the helical rib and groove orientation is obtained by opposed roller or belt pairs 9, 10, and 9a, 10a, Fig. 2, which engage and draw the pipe from the extrusion die, being arranged to rotate about axes at an angle to the extrusion direction, to cause the pipe issuing from the die to rotate about its axis. The axial ribs and grooves are obtained by roller pairs rotating about axes perpendicular to the extrusion direction. The rollers or belts draw the pipe from the die through an external sizing device, and a cooling water spray. The extruder may have one or more screws.
Patent GB-127536-A (GB)
Title: Improvements in Floor Coverings and the like.
Inventor: JOHNSON GEORGE WILLIAM
IPC: D06N7/00
Filed: 1919-01-31
Abstract: 127,536. Johnson, G. W., (Congoleum Co.). Jan. 31, 1919. Single coatings.-A floor covering comprises a base 1 of felt impregnated with a semi-solid bituminous material and a wearing-surface 3 of linseed-oil composition, the base 1 having perfora. tions 2 into which some of the material 3 is forced when pressure is applied. The perforations may be undercut, and an asphalt binder may be employed between the base and the material 3 and extending into the perforations.
Patent GB-383807-A (GB)
Title: Method of and arrangement for production or amplification of oscillations by means of gas discharge amplifier valves
IPC: H03B9/01
Filed: 1932-01-28
Abstract: 383,807. Valve circuits ; discharge apparatus. TELEFUNKEN GES. FœR DRAHTLOSE TELEGRAPHIE, 12, Hallesches Ufer, Berlin. Jan. 28, 1932, No. 2612. Convention date, Jan. 28, 1931. [Classes 39 (i) and 40 (v).] In a valve, generator or amplifier of the type having an auxiliary discharge serving as electron source means are provided for feeding back energy from the output circuit into the auxiliary discharge circuit.. The discharge occurs in a gas - filled valve 1 between electrodes 2, 3 which are energized by a D.C. source 7 through coil 9. For oscillation generation the anode oscillatory circuit 6 is coupled to the coil 9, being fed through blocking condenser 11 from the anode 5 which is supplied through choke 10 from the D.C. source 8. Phase correction means may be introduced to compensate for inertia effects in the gas discharge and modulation of the oscillations effected by modulating potentials applied to a grid 4, the main anode circuit, or to the discharge circuit. Currents from a separate source may be amplified by being applied to the auxiliary discharge path, the feed-back providing a reaction effect. The grid 4 may be used as a space charge or screen grid in known manner or may be omitted, and the valve may have fillings of rarefied hydrogen or other gas with very small ionic inertia. The Specification as open to inspection under Sect. 91 comprises also an amplifier in which there is no provision for feed-back. This subject-matter does not appear in the Specification as accepted.
Patent GB-801095-A (GB)
Title: Improvements in or relating to laminated material for labels
IPC: B65C3/06
Filed: 1955-01-28
Abstract: 801,095. Labels. BRUNN, 0. J. Jan. 28, 1955. No. 2641/55. Class 73 [Also in Group VIII] A label comprises a laminate of thin metal foil and paper and is perforated over its whole surface with a close pattern of 700-1,200 perforations per square centimetre, which preferably completely penetrate the paper. Each perforation is made at the bottom of a concave indentation on the foil side of the label. The perforations are made by passing a laminate between two rollers, one of Which is hard and formed appropriately with a close pattern of pointed male embossments andthe other of which is soft, e.g.-of papier mache, leather or rubber.
Patent GB-789844-A (GB)
Title: Improved process and apparatus for the manufacture of seamless filled capsules
IPC: A61J3/07
Filed: 1956-01-26
Abstract: 789,844. Moulding capsules. B. & P. LABORATORIES, Ltd., and TRIFAX, N. V. Jan. 26, 1956 [Jan. 28, 1955], No. 2663/56. Class 87(2). [Also in Groups XXVIII and XXXV] Seamless filled capsules are made by feeding the filling, e.g. cod liver oil, medical oil or vitamins A and D in oil, from a jacketed container 6 by a pump 8 (see Group XXVIII) to the inner orifice of a nozzle 4, and the encapsulating material, e.g. gelatin, from a jacketed container 1 to the outer orifice of the nozzle. The composite jet leaving the nozzle is vibrated to form constrictions, the jet then breaking up into separate drops which become congealed spheres on descent through a cooling liquid, e.g. paraffin oil, in a container 12. The capsules and and cooling liquid pass from the container through a conduit 20 to a sieve 22 where the capsules are removed. The liquid being pumped therefrom through a conduit 26 to a tank 27, where it is cooled by a refrigerator coil 28 prior to overflowing into the container 12. The vibration may be effected by a pulse of cooling liquid injected through an annular slit 11, Fig. 2, in a pulsator 10 which encircles the composite jet below the nozzle. In a modification, Fig. 7 (not shown), the jet may be subjected to vibration by a vertical reciprocation of the nozzle, relative to the cooling liquid. In a further modification, Figs. 8 and 9 (not shown), an electromagnetic vibrator (see Group XXXV) is placed in conduits 3 or 7.
Patent GB-806412-A (GB)
Title: Improvements in moulds for artificial stone
IPC: B28B1/50
Filed: 1956-01-27
Abstract: 806,412. Cutting concrete into blocks &c. DUROX INTERNATIONAL S.A. Jan. 27, 1956 [Jan. 28, 1955], No. 2710/56. Class 87(2). A porous concrete mass is cut into blocks by wires 7, 8 which are moved upwardly through the concrete by moving either the end 3 or side 4 or both end and side walls of the mould upwardly. The mould walls may be formed as a frame to which the wires are secured. The mould walls may be inclined inwardly to facilitate removal. The mould walls or cutting frame may have vibrators 9. The height of the mould may correspond to the length of a block or the width of a slab. The wires may be supported between their ends.
Patent GB-123086-A (GB)
Title: Improvements in High Tension Distributors for Electric Ignition Apparatus.
IPC: F02P7/063
Filed: 1919-02-04
Abstract: 123,086. Akt.-Ges. Brown, Boveri, et Cie. Feb. 4, 1918, [Convention date]. Addition to 114,825. Rotary distributors for internal-combustion engines of the kind in which there is a separate current supply terminal b<1>, b<2> for each collecting or spark-plug terminal c<1>, c<2> as described in the parent Specification, have the current suppply and collecting terminals opposite or nearly opposite each other.
Patent GB-1422196-A (GB)
Title: Domestic garbage press
IPC: B65F5/00
Filed: 1973-01-18
Abstract: 1422196 Refuse compactor FICHTEL & SACHSAG 18 Jan 1973 [22 Jan 1972] 2745/73 Heading B8C [Also in Divisions A4 B5 and F2] A domestic garbage press comprises: a press housing 1 having a door 3 and provided with a garbage container 4; a lever system acting between the housing and a vertically-movable ram 11; and a power device including a drive motor 20, the power device being connected to an upper lever arm of a lever 5 at a position which is offset from a straight line defined by a cross-joint 9 of the lever 5 and a swivel joint at the end of the lower lever arm of the lever 5. The arrangement according to the invention is said to improve the pressing action of the press ram. In embodiment shown the upper end of a lever 6 is connected to the housing by a swivel joint b, while the lower end of a lever 7 is connected to the ram by a swivel joint d. The lever 5 is connected to the housing by a pivotal link 16; a lever 8 is connected by a swivel joint c to a slide block 15 which slides on the ram. The lever 5 carries a rigid auxiliary lever 17 having a rotatably mounted threaded nut 18 which engages the threaded spindle 19 of the drive motor 20. The housing of the drive motor is pivotably mounted at the swivel joint b. A second set of levers similar to, and arranged parallel with, the levers 5-8 may be provided. Fig. 8 (not shown) depicts a constructional form corresponding to the embodiment of Fig. 1; the slide block 15 of Fig. 1 is however replaced by a roller arrangement. The embodiment depicted in Fig. 2 (not shown) is similar to the embodiment of Fig. 1 but the lever (5) is connected at a swivel joint (a) to a slide block (14). The door 3 of Fig. 1 may be replaced by an upper door for the introduction of garbage and a lower door for the introduction of the garbage container 4. Fig. 3 (not shown) depicts a drive mechanism in which the joint (27) of the levers (21, 22) is not at the mid-point of these levers, thus producing lever arms of unequal length. The lever (22) is connected to the housing by a pivotal carrier link (23) and by a pivotal stabilizer link (24). The lever (21) is connected through a pivotal draw link (28) with the housing. The drive motor (20) is pivotably mounted at a swivel joint (b). In a modification each of the levers (21) and (22) is provided with an auxiliary lever (17) having a threaded nut for engagement with a drive spindle having two threaded sections. The slide block (15) may also be replaced by a link pivoted to the ram. It is also possible to mount the drive motor and spindle rigidly in the housing and connect the nut (18) to the auxiliary link (17) by a further link. Fig. 10 (not shown) depicts a constructional form corresponding to the embodiment of Fig. 3; the drive motor (20) is however pivotably mounted on the housing. Fig. 4 (not shown) depicts a drive mechanism similar to that of Fig. 3; the lever (21) of Fig. 4, however, is mounted in a slide block (14).
Patent GB-936727-A (GB)
Title: Sealed unit comprising a centrifugal pump and an electric driving motor
Inventor: TIMM CLAUS
IPC: F04D29/58
Filed: 1960-01-26
Abstract: 936,727. Electric motors. KLEIN, SCHANZLIN & BECKER A.G. Jan. 26, 1960, No. 2840/60. Class 35. [Also in Group XXVI] An electric motor 3 which is combined, in a sealed unit, with a pump 7 (see Group XXVI) is cooled and lubricated by a liquid which enters the motor chamber at 28 and is circulated by an impeller 35 secured to the motor shaft. On leaving the pump the liquid passes into a heat exchange chamber 16 containing a helical cooling rib 32, before leaving at the outlet connection 31 to return to the inlet 28 by way of a cooler and a pressure equalization tank. A thermally insulating plate 14 is secured to the partition 1 separating the motor from the pump.
Patent GB-900123-A (GB)
Title: Improvements in or relating to the production of alkyl-or aryl-halosilanes
IPC: B01J23/72
Filed: 1960-01-26
Abstract: Alkyl or aryl halosilanes are prepared by reacting an alkyl or aryl halide with silicon in the presence of a catalyst comprising a copper-silicon alloy containing 5 to 25% by weight of silicon or ferrosilicon (including impurities), the catalyst alloy and silicon reactant having been sintered at temperatures up to 1250 DEG C. in a reducing or inert atmosphere or in a vacuum before reacting with the halide.  An accelerator such as zinc or aluminium may be included in the alloy.  The proportion of copper is preferably 1 to 50% by weight of the total silicon.  A particularly preferred catalyst alloy is one which corresponds to the formula Cu3Si.  The silicon reactant may also be in the form of ferrosilicon.  The examples describe the preparation of mixtures of methylchlorosilanes and of phenylchlorosilanes; the Specification also mentions methyl bromide and isopropyl chloride as reactants.ALSO:A copper-silicon alloy used as catalyst in the preparation of organohalosilanes (see Group IV (a)) contains 5 to 25% by weight of silicon or ferrosilicon including the usual impurities, the remainder consisting of copper and optionally an accelerator, e.g. zinc or aluminium.  A particularly preferred alloy corresponds to the formula Cu3Si(12.8% Si).  The alloy is itself sintered with the silicon used for the preparation of the silane, at temperatures up to 1250 DEG  C. in a reducing or inert atmosphere or in a vacuum.  This silicon reactant may also be ferrosilicon.  In the final mixture, the copper preferably comprises 1 to 50% by weight.  The proportion of aluminium in the catalyst alloy should not exceed 10%; the zinc is referred to in proportions of around 1% to 7%.
Patent GB-1201903-A (GB)
Title: Improvements relating to the warping of threads
Inventor: TURNBULL DAVID HOWAT
IPC: D02G1/10
Filed: 1967-01-19
Abstract: 1,201,903. Warping and crimping. COURTAULDS. Ltd. 18 Jan., 1968 [19 Jan., 1967], No. 2876/67. Heading DIM. A warp 1 from a beam 2 or a creel is passed over a heater 4, a crimping edge 5, through a sizing bath 9, through nip rolls 12, 11 and is dried on heated rolls 13, 14 and 15 under sufficient tension to prevent relaxation of the threads prior to being wound on a beam 16.
Patent GB-1459242-A (GB)
Title: Process for the production  of disopropyl ether
IPC: C07C67/00
Filed: 1974-01-22
Abstract: 1459242 Diisopropyl ether from isopropanol and propylene NIPPON OIL CO Ltd 22 Jan 1974 [24 Jan 1973] 02968/74 Heading C2C Diisopropyl ether is made by reacting isopropanol and propylene, in the presence of, as catalyst, a cation exchange resin containing sulphonic acid groups, suitably at 25-150‹ C.
Patent GB-655377-A (GB)
Title: Crystalline tetramethylene isophthalate polymer
IPC: C08G63/181
Filed: 1948-02-02
Abstract: Crystalline superpolyesters are obtained by reacting equimolecular proportions of a glycol (at least 90 per cent being tetramethylene glycol) and of a dicarboxylic acid chloride (at least 90 per cent being isophthaloyl chloride) and causing the polymer to crystallize. The reaction may be effected by mixing the reactants at room temperature and finally heating at between 100 DEG  and 250 DEG  C. until HCl ceases to evolve, or by gradually adding the tetramethylene glycol to molten isophthalolyl chloride at 100 DEG  C. and increasing the temperature during the final stages to about 200 DEG  C.  Up to 10 per cent of another glycol having more than 3 carbon atoms or of another acid chloride such as terephthalolyl chloride, may be used. The ultimate melt viscosity is preferably 500 to 4000 poises at 218 DEG  C.  Crystallization is effected by (1) annealing at 20 DEG  to 80 DEG  C. below melting temperature, (2) casting from solution, e.g. in ethylene dichloride or chloroform, (3) stretching-as of a filament-at room temperature or a temperature well below melting-point.  The melting point of unstretched fibres observed through crossed polarizers is 140 DEG  to 146 DEG  C., and of stretched fibres is 145 DEG  to 155 DEG  C., the latter shrinking at about 135 DEG  C.  Filaments may be melt-spun or extruded, the resulting sticky, non-crystalline filaments being stretched, to produce non-sticky, crystalline filaments, between differential speed rolls with, if desired, the interposition of a heated bath of non-solvent, e.g. glycerol, water, mercury or Wood's metal.  The polyesters may be used in the manufacture of moulded articles, electric insulation and films as well as of fibres, yarns and filaments.  In examples (1) the reactants were heated together, and the product melt spun into filaments which were stretched in two stages, a bath of Wood's metal being used in the second stage; (2) 90 per cent of isophthaloyl chloride and 10 per cent terephthalolyl chloride was reacted with tetramethylene glycol.  Stretched filaments therefrom were highly crystalline, with melting point 140-141 DEG C., while the crystallized polymer obtained by casting from solution in ethylene dichloride melted at 124.5-126 DEG  C.
Patent GB-221149-A (GB)
Title: Improvements in or relating to sliding window sashes and the like
IPC: E05F11/00
Filed: 1924-02-06
Abstract: 221,149. Smith, J. Feb. 6, 1924. Catches yielding to pull and pressure. - A holder for sliding windows comprises a steel ball C pressed by a fiat spring B to engage sockets with bevelled entrances let in the sash. The end b of the spring is curved to encircle the top part of the ball as shown, the other end being attached to a casing A in the frame. An eccentric F on a spindle H can be turned to keep the ball in engagement with the sash.
Patent GB-493739-A (GB)
Title: Improvements in and connected with magnetic circuits for electrical apparatus
IPC: H01F27/245
Filed: 1938-02-01
Abstract: 493,739. Transformers &c. SOC. SAVOISIENNE DE CONSTRUCTIONS ELECTRIQUES. Feb. 1, 1938, No. 3168. Convention date, Feb. 3, 1937. [Class 38 (ii)] In transformer &c cores built up from laminations 2, 3 with cooling-slots 4 extending at right-angles tc the plane of the laminations, short laminations 5 shapec as shown and interleaved both with the yoke laminations 2 and the core lamina tions 3 are used at the junctions of the main laminations to provide a solid iron structure at these points whilst permitting the cooling- slots to extend over the full length of the limbs.