baber/WOPTO huggingface dataset:
Patent GB-966963-A (GB)
Title: Improvements in or relating to indexing mechanisms
Inventor: WALTON KENNETH GEORGE
IPC: B23Q1/52
Filed: 1960-04-06
Abstract: 966,963. Machine tool details. BROOKE TOOL MANUFACTURING CO. Ltd. April 4, 1961 [April 6, 1960], No. 12108/60. Heading B3B. An indexing means comprises a central radially expansible means 41, 46 co-operating with an angularly movable member 25 and an angular locating means 87 for locating the latter member. The rotary table 25 carries workpieces 26 to be operated on by machining units carried by a central fixed pillar 23 and by wing bases 24. The table is centred approximately about a boss 22 by rollers 31 and can be lifted to float on the base 21 by fluid pressure supplied through an inlet 34 to a groove 33. The table is rotated by a fluid pressure motor 38 through gearing 37, 34<SP>1</SP>, 32. A control disc 86 rotates simultaneously with the table to cause slowing of the motor 38 as an index position is approached. Situated centrally, or otherwise, of the base 21, the plunger 41 can be moved vertically by fluid-pressure means 42 to move radially three rods 46 mounted in laterally adjustable guides 45. The rods 46 press against the table 25 and centre it. The rods are returned by springs 53 attached to rods 52 one of which engages a switch 55 to start the motor 38. The table is positioned angularly by the plunger 87 moved by a fluid-pressure device 60. The sockets on the table to receive the plunger are formed by two rollers 78 on eccentric adjustable shafts 73 carried in a bracket 61 adjustable laterally on the table 25 and located by a dowel 88. The table is roughly positioned, before actuation of the plunger 87, by a pin 83, retractable by fluid-pressure means, engaging stops 84 on the table. Means may be provided to clamp the table while machining is in progress.
Patent GB-116971-A (GB)
Title: Improvements in Method of Obtaining Syphonic Action in Flushing Cisterns and the like.
Inventor: DAVENPORT THOMAS WILLIAM
IPC: E03D1/12
Filed: 1918-01-26
Abstract: 116,971. Davenport, T. W., and Foster, F. Jan. 26, 1918. Siphon - discharge waterwaste preventers.-The action is started by forming the free end K of the syphon of converging-diverging ejector shape and forcing a stream of water therethrough from a nozzle provided with a number of separate orifices, or from a perforated cap F placed over the nozzle.
Patent GB-183588-A (GB)
Title: Improvements in lamp shade supports
IPC: F21V17/02
Filed: 1921-04-27
Abstract: 183,588. Haddan, A. J. H., (Greist Manufacturing Co.). April 27, 1921. Shade-holders.-In lamp-shade supports of the type in which a lamp-shade is attached to the bulb of an electric lamp by resilient bulb-gripping arms, a universal joint is supported from the lamp bulb, and the lamp-shade from this joint, the shade being capable of angular adjustment to a variety of positions. In one form, the shade 5 is clamped to the ball 30 of a ball-andsocket joint by a handle 35 which screws on a threaded shank 34 attached to the ball 30. a washer 36 being interposed between the shade and the ball. The joint is formed by a sheet-metal cage 12 provided with upwardly bent vertical flanges 120, Fig. 4, having at their upper edges lugs 16 and having laterally-extending hook-shaped ears 18. A plate 22, Fig. 5, circular in form and provided with a central aperture 24, with slots 26 to receive the lugs 16 of the cage and equally spaced upwardly bent portions 25, is placed over the top of the case. The ball 30 is engaged by the cage 12 and rests on a washer 10 in the cage. Another washer 15 is provided between the plate 22 and the upper part of the ball. The stems 7 of the bulb-gripping coils 6 extend upwards through the hook-shaped ears 18 of the cage and have their upper ends 32 inwardly bent to pass into the space formed between the upper washer 15 and the bent portions 25 of the plate 22. The lugs 16 are bent back upon the plate 22 to secure the joint together.
Patent GB-756438-A (GB)
Title: Improvements in or relating to electric lighting fittings
Inventor: SMITH HERBERT LIONEL
IPC: F21V17/00
Filed: 1953-05-01
Abstract: 756,438. Screw fastenings. BENJAMIN ELECTRIC, Ltd. April 28, 1954 (May 1, 1953; June 4, 1953; Oct. 19, 1953], Nos. 12134/53; 15427/53 and 28786/53. Class 44. (Also in Group XI] A device for holding together a reflector 2 and a channel member 1 of a lighting fitting comprises a wing nut 7 adapted to screw on to a bolt 6 in the channel member 1, and having a pair of spring jaws 10, 11 for engaging flats 16 on the bolt in the relative angular position of wing nut and bolt in which the wing nut can pass through an elongated hole 2a in the reflector. The wing nut is also held in a second angular position relative to the bolt in which it engages the sides of the elongated hole 2a by a pressure pad 27 adjacent the hole. In a modified construction the spring jaws are either secured to a stay in the channel member 1 or to the bolt 6 and the jaws engage flats on the wing nut. In the further modification shown in Fig. 4, a wing nut 35 screws on to a bolt 30 in the channel member and a projection 37 on the wing nut engages in recesses 36 in a spring- urged catch plate 31 slidably mounted on the bolt and prevented from rotating by projections thereon engaging in slots in the arms 32 of a U-shaped bracket 33 secured to the channel member. The wing nut may be held by the catch plate in two positions ninety degrees apart.
Patent GB-116610-A (GB)
Title: Improvements in and relating to Connecting-rods for Radial-cylinder Motors.
Inventor: MULLET CLAUDE
IPC: F16H21/34
Filed: 1917-08-24
Abstract: 116,610. Mullet, C. June 20, 1917, [Convention date]. Connecting-rods.-A crank connexion for a radial-cylinder motor consists of plates a, b formed with inner and outer grooves with which claws f<2>, f<3> on the connecting-rod f engage. The connecting-rods are arranged so that the outer claws f<2> engage alternately in the outer groove of the plate a and the outer groove of the plate b, and the inner claws f<3> engage alternately in the inner groove of the plate b and the inner groove of the plate a. When the number of connecting-rods is uneven, one connecting-rod is formed with an annulus engaging the hub formed by the plates a, b. The latter are secured together by a screw c or otherwise, and may be mounted on ball-bearings d.
Patent GB-392729-A (GB)
Title: Improvements in the simultaneous transmission of different highfrequency signalling currents for television and the like
IPC: H04N7/04
Filed: 1932-04-28
Abstract: 392,729. Wireless and wired-wireless systems. ARDENNE, M. VON, 19, Jungfernstieg, Lichterfelde, Berlin. April 28, 1932, No. 12195. Convention date, April 29, 1931. [Class 40 (v).] In a television system the wide frequency band corresponding to the point elements of the picture (which may extend up to 10<4> or 10<5> cycles) is transmitted from the pick-up 1 and superposed directly on to a short-wave carrier, of say 30 metres, whilst the line frequency of say 1000 cycles from the apparatus 2, together with the image-changing frequency of say 20 cycles from the device 3, are both superposed on an intermediate carrier-wave 4, of say 300 metres, which is then applied to modulate the common short-wave carrier 5. At the receiving station 6 the high-frequency or pointintensity band is amplified at 7, whilst the intermediate carrier is demodulated at 8 where the two low-frequency components are separated out by a filter 9 and fed in parallel to the terminal devices 10, 11. In an alternative. arrangement, only the image-changing frequency is superposed on an intermediate carrier wave. Specification 387,536 is referred to.
Patent GB-218628-A (GB)
IPC: C01B31/08
Filed: 1924-05-19
Abstract: 218,628. Clemm, H. M³ller-, and Ges. f³r Chemische Produktion. July 5, 1923, [Convention date]. Addition to 216,130. Carbon.-The process of the parent Specification, for preparing decolorizing carbon by carbonizing a mixture of carbonaceous material such as sulphite cellulose lye, and alkali sulphide or polysulphide with or without alkali carbonate, is modified in the case of sulphite cellulose lye by introducing the carbonate in the form of carbon dioxide. In examples, carbon dioxide is passed into a mixture of sulphite cellulose lye and potassium sulphide, the precipitate filtered off and the filtrate evaporated to dryness and carbonized with exclusion of air: slaked lime is added to sulphite cellulose lye and the filtered precipitate is leached with hot potassium sulphide under normal or increased pressure, the lime precipitated by carbon dioxide and the solution treated as before.
Patent GB-755611-A (GB)
Title: Connecting means for power transmission or control shafts or the like
IPC: B60S1/24
Filed: 1953-05-04
Abstract: 755,611. Hinges. SWF.-SPEZIALFABRIK FUR AUTOZUBEHOER G. RAU GES. May 4, 1953 [May 2, 19S2], No. 12343/53. Class 65 (2). Connecting means between a driving shaft 1 and a driven shaft or rod 6 comprise a crank 2, and a flexible element 8 in the form of a rod or strip pivotally connected at one end to the crank and secured at the other end to the driven shaft or rod. As shown, one end of element 8 is formed with a head 5 containing a bearing bush 4 for a crank-pin 3, and the other end of element 8 is formed with a screw-threaded socket 7 secured to rod 6 by a look-nut 11. The bush 4 may be omitted if the flexible material has the necessary bearing properties. Pin 3 is connected by a cranked link 9 and a second flexible element 8 to a second rod 6. Rod 1 is rotated by an electric motor, whereby longitudinal movement is imparted to the rods 6 for driving the two windscreen wipers of a motor vehicle.
Patent GB-919031-A (GB)
Title: Improvements relating to the bonding of metals
Inventor: STEPHENSON NORMAN
IPC: B23K20/02
Filed: 1959-04-13
Abstract: 919,031. Welding by pressure. INTERNATIONAL NICKEL CO. (MOND) Ltd. April 1, 1960 [April 13, 1959], No. 12456/59. Class 83 (4). In joining two pieces of metal 1, 2 with or without the interposition of a thin layer 3 of another metal or alloy, by heat and pressure to form a bond by metallic diffusion, the pieces are maintained slightly separated within a sheath 8 which is deformable under the welding pressure and with the metal pieces forms an airtight assembly enclosing the surfaces to be joined, the resultant assembly is heated and pressure is applied to close the gap and deform the sheath while the atmosphere in the interior of the sheath is reactive and capable of dispersing or destroying oxide films or is inert and protective or is exhausted. Each piece 1, 2 is cylindrical and of creep-resisting nickel-chromium-cobalt alloy containing aluminium and titanium and has an end flange 7 to which one end of a cylindrical mild steel sleeve 8 is welded. A nickel foil 3 is arranged between the pieces in the gap therebetween and openings 10, 11 in the sheath in contact with the annular space 9 about the pieces register respectively with an opening in a tube 12 containing granular chromium and aluminium fluoride and an opening in a tube 13 connected to a vacuum pump and vessels in which aluminium fluoride vapour is absorbed in water. The assembly is placed in a furnace 6, the space 9 is evacuated and the assembly is heated to 1100‹ C. when an atmosphere believed to consist of hydrogen fluoride, hydrogen, nitrogen and chromyl fluoride and reactive to oxide films enters the space 9. A pressure of 2 tons per square inch is applied through members 4, 5 which deforms the sleeve and closes the gap and with pressure and temperature maintained for 15 minutes a diffusion bond is obtained. The pressure may be applied by forging blows, by rollers or by extrusion or the pressure applying members may be vibrated. The sheath may be heated by electric current and the inert atmosphere may be of dry argon or hydrogen. Composite billets, turbine blades with roots joined to blade sections and turbine discs joined to blades may be provided by the method. Specification 815,620 is referred to.
Patent GB-353871-A (GB)
Title: Improvements in or relating to the manufacture of vulcanised rubber
IPC: C08K5/00
Filed: 1930-04-23
Abstract: Derivatives of benzothiazoles, dithiocarbamates, and xanthates.-The reaction product of mercaptobenzthiazoles, dithiocarbamates and alkylxanthic acids having three or more carbon atoms in the alkyl group and their respective homologues and simple substituted derivatives, with esters of halogen-substituted derivatives of formic acid are used as accelerators of vulcanization.  The "esters of halogen-substituted derivatives of formic acid" include chloroformic esters, bromoformic esters, and chloracetic esters. The products are carbalkoxy derivatives and the preparation of the following is described: (1) mercaptobenzthiazole is reacted with ethylchloroformate in alcohol to give 2-carbethoxy-benzthiazylsulphide; (2) diethylammonium diethyldithiocarbamate is dissolved in alcoholic potash and treated with ethylchloroformate to give carbethoxy diethyldithiocarbamate; (3) piperidine-pentamethylenedithiocarbamate is boiled in alkali solution and treated with ethylchloroformate to give carbethoxy-pentamethylenedithiocarbamate; (4) potassium isopropylxanthate is treated in alcohol with ethylchloroformate to give carbethoxy-isopropylxanthate; the latter is an oil and deposits on standing crystals of isopropylxanthogen monosulphide. The Provisional Specification refers to the use of the reaction products from xanthates generally and esters of halogensubstituted derivatives of formic acid.ALSO:Rubber compositions containing a vulcanizing agent such as sulphur are vulcanized in the presence of an accelerator produced by the interaction of mercaptobenzothiazoles, dithiocarbamates and alkyl-xanthic acids having more than three carbon atoms in the alkyl group and their respective homologues and simple substituted derivatives with the esters of halogen substituted derivatives of formic acid.  The latter term includes chloroformic esters, bromoformic esters and chloracetic esters and the accelerators so obtained reduce the tendency to scorching; they also have greater stability during storage.  In examples (1) 0,75 and 1,0 per cent of the reaction product of mercaptobenzothiazole and ethyl chloroformate is incorporated into a rubber mix and vulcanized at 128 DEG  C.: (2) 0,5 and 1,0 per cent of the reaction product of diethylammonium diethyldithiocarbamate and ethyl chloroformate is incorporated into a rubber mix and vulcanized at 128 DEG  C: (3) 0,5 and 1,0 per cent of the reaction product of piperidine - pentamethylene - dithiocarbamate and ethyl chloroformate is incorporated into a rubber mix and vulcanized at 128 DEG  C.: (4) 1,0 per cent of the reaction product of potassium isopropylxanthate and ethyl chloroformate is incorporated in a rubber mix and vulcanized at 108 DEG  C.; the reaction product obtained is an oil and deposits on standing crystals of isopropylxanthogen monosulphide which is also a good accelerator. The Provisional Specification refers to the use of the reaction products of xanthates generally and esters of halogen-substituted derivatives of formic acid.
Patent GB-451301-A (GB)
Title: Improvements in tuning coil arrangements for radio receivers
IPC: H03H2/00
Filed: 1935-04-26
Abstract: 451,301. Wireless receiving systems. COLE, Ltd., E. K., Priory Crescent, Southendon-Sea, and BRADFIELD, G., 34, St. Benets Road, Prittlewell. Essex. April 26, 1935, No. 12509. [Class 40 (v)] An input filter for a radio receiver comprises two coupled tuned circuits A, E1, E2, W3 and B, C, D, W4, Fig. 1, forming a bandpass filter with wave-band switching S3. Associated with the medium-wave windings E1, E2, are a pair of bifilar wound coils F1, F2 which in the medium wave position T of the switch T, T1, are connected respectively to the aerial Y through its lead-in wire L2 and to a twin auxiliary lead-in wire L1 so that interference picked up on the wires L1, L2 is balanced out. The effect of the lead L1 can be cut out by opening switch S2 and closing switch S1 to earth said lead. In the long wave position T1 the input coils A1, A2, coupled to the long wave coil A, are associated with the aerial system. The coils may be all disposed on a single former, Fig. 2, the coils E1, E2, and C, D being mutually adjustable to obtain the required inductance. Alternatively a movable iron core may be provided.
Patent GB-567309-A (GB)
Title: Improvements in sliding windows, doors and the like
IPC: E05D15/06
Filed: 1943-08-04
Abstract: 567,309. Sliding windows and doors. TURNER, R. Aug. 4, 1943, No. 12582. [Class 20 (iii)] In a sliding window 6 or door having rollers 3 running on the webs of upper and lower T girders 1, 2, a portion 2b of the lower track is made removable so that the window or door may be removed from its frame. The tracks are normally obscured by outer frame sections, but a portion of the lower frame section may be removed when necessary. The lower frame section comprises three aligned bars 14a, b, c secured by bolts and angle brackets to the flange of the lower girder 2. A sill fillet 19 and drip bar 21 are secured to the central bar 14b and a distance piece 23 is positioned between the bar 14b and the removable portion 2b of the lower girder, packing or other strips 14b, 23a being inserted. The strip 23a overlies the ends of the stationary portion of the lower girder and is screwed thereto. A weather strip 50 is secured to the lower edge of the window. The window is held in any desired position by spring-pressed normally retractable rods 36 engaging apertures 35 in metal strips 34 secured to upper and lower frame bars 30, 31.
Patent GB-916881-A (GB)
Title: Improvements in and relating to the manufacture of semiconductive devices and materials
Inventor: BROOKES GEOFFREY
IPC: C30B13/00
Filed: 1959-04-14
Abstract: A method of manufacturing a semi-conductive device or a semi-conductive material comprises a step of heating in a chamber in an atmosphere of or containing hydrogen which is supplied to the chamber in a purified state by way of passage through a heated palladium membrane.  In the production of silicon from a halogenated silane compound, e.g. silicon chloroform, commercial hydrogen is supplied to a first chamber which communicates with a second chamber via a heated palladium tube, and a flow of hydrogen into the second chamber is effected either by supplying the commercial hydrogen at a pressure greater than ambient pressure and providing the second chamber with a relief valve or by evacuating the second chamber.  The purified hydrogen leaving the palladium membrane is caused to pass through a liquid containing the volatile silane compound, so that a gaseous mixture of purified hydrogen and volatile compound is delivered to the second chamber where it is heated, as by electrically heated members on which the silicon deposits.ALSO:The hydrogen used in a process of reducing germanium oxide is purified by passage through a heated palladium membrane. Commercial hydrogen may be supplied to a first chamber which is separated from a second, heated, chamber by the palladium membrane, which may be in the form of a tube, and the second chamber is exhausted by a pump to maintain the flow of hydrogen through the membrane.  Alternatively, the hydrogen may be supplied to the first chamber at a pressure above atmospheric pressure, the second chamber communicating with the ambient atmosphere through a relief valve.
Patent GB-1035083-A (GB)
Title: Process for converting cis-1,2-dicyanocyclobutane to trans-1,2-dicyanocyclobutane
Inventor: SCHREYER RALPH COURTENAY
IPC: C07C255/45
Filed: 1965-03-25
Abstract: Cis - 1,2 - dicyanocyclobutane is isomerized to trans-1,2-dicyanocyclobutane by contacting the cis-compound in the vapour phase at a temperature in the range 250-350 DEG  C. in an inert atmosphere substantially free from hydrogen with a cobalt or nickel hydrogenation catalyst.  Preferably the starting material is a mixture of the cis- and trans-isomers.  The trans-1,2-dicyanocyclobutane may be catalytically hydrogenated to give trans-1,2-bis-(aminomethyl)cyclobutane.
Patent GB-1496646-A (GB)
Title: Mixer circuit
IPC: H03C1/54
Filed: 1976-03-30
Abstract: 1496646 Mixer circuits STANDARD TELEPHONES & CABLES Ltd 30 March 1976 12721/76 Heading H3T A mixer circuit comprises a ring of four likepoled series-connected diodes 15-18 and two balanced differential amplifiers, with the respective outputs of the amplifiers connected across diametrically opposed pairs of nodes of the ring 11, 13 and 12, 14. Each pair of nodes is also connected to a respective summing circuit from the outputs 21, 22 of which sum and difference frequencies from balanced signals applied to the respective amplifier inputs 3, 4 and 5, 6 may be derived. The summing circuits may consist of resistors R5, R6 and R7, R8; alternatively transistors may be used. Being transformerless, the mixer may be fabricated as a monolithic integrated circuit.
Patent GB-1117677-A (GB)
Title: Process for the electrolytic production of adiponitrile
Inventor: VERHEYDEN ALBERT
IPC: C25B3/29
Filed: 1966-03-23
Abstract: Acrylonitrile is hydrodimerized into adiponitrile by electrolysis of a medium comprising: (a) acrylonitrile, e.g. 1-70%; (b) amide, sulphone or sulphoxide solvent, e.g. 30-80% of (dimethyl) formamide or acetamide, dimethyl or tetramethylene sulphone, sulpholane, dimethyl or diethyl sulphoxide; (c) ammonium or alkali metal thio-cyanate, perchlorate or nitrate electrolyte, e.g. 0.1-50% of NaClO4 or KSCN; and (d) water, e.g. less than 10%.  The medium may be a solution, an emulsion or a suspension, having a pH between 3 and 12.  The electrolytic cell may be with or without a diaphragm constituted by a porous plate or permselective membrane where the catholyte is the medium and the anolyte is e.g. aqueous HClO4.  The cathode may be of Hg, Pb, Sn, Ni, but preferably is a graphite cylinder or disc; the anode may be of magnetite, graphite, Ni, Pb, PbO2, but preferably is a Pt trellis concentric cylinder or disc. The medium may be circulated by stirring.
Patent GB-552433-A (GB)
Title: Improvements in or relating to electrical transformers and coils
IPC: H01F41/12
Filed: 1941-10-03
Abstract: 552,433. Synthetic resins. STANDARD TELEPHONES & CABLES, Ltd., and WEBB, J. K. Oct. 3, 1941, No. 12802. [Class 2 (iii)] [Also in Groups XXXV and XXXVI] Transformer coil assemblies and condenser bushings are manufactured by preforming a number of different-sized bushes of paper or other fibrous material impregnated with a polymer, inserting a smaller bush, which may carry a winding or metal foil, into a slightly larger bush after coating the mating surfaces with a monomer, and then baking the assembly for, say, one day at 70‹ C. to polymerize the monomer and so bind the two bushes together. The cement may be 40 per cent. of monomeric styrene thickened by 60 per cent. of polystyrene. Specifications 377,311, [Group XXXVI], 545,707, [Group XXXV], and 549,043, [Group XXXVI], are referred to.