baber/WOPTO huggingface dataset:
Patent GB-759766-A (GB)
Title: Improvements in or relating to a method of calcining barium carbonate
IPC: B01J6/00
Filed: 1953-03-19
Abstract: <PICT:0759766/III/1> A mixture of barium carbonate and barium oxide is calcined whilst maintaining more than 50 per cent and preferably more than 90 per cent by weight of barium oxide in the mixture throughout the period of calcination.  It is preferred to use a fluidized bed of the mixture but the use of a rotary hearth with radiant heating and recycling of a portion of the product is mentioned.  In one embodiment of the invention, illustrated by the drawing, nitrogen for the calcination is preheated by passage through a reactor 12 heated at between 500 and 1500 DEG C. by furnace 14 which may be gas fired, containing carbon particles which are thereby held in fluidized suspension, oxygen and carbon dioxide in the nitrogen being converted at the same time to carbon monoxide. Preheating of the gas may form additional or alternative heating. After removing entrained carbon in a cyclone 38 the gas passes into the fluidized calcining bed 22 which contains granules, preheated if desired, prepared by mixing barium carbonate, e.g. below 100 (Tyler) mesh, carbon (e.g. 6 per cent) and a wheat starch or other binder, with water, extruding, drying and lightly crushing the dried solids so as to be retained on an 80 mesh sieve and preferably to pass through a 10 mesh sieve.  Barium oxide granules, preheated to above the calcination temperature but below fusion temperature may be added to the bed to provide additional heat.  Alternatively the granules may be prepared without, or with little carbon, and after crushing, subjected to treatment with methane, e.g. at 400 to 800 DEG C. to deposit carbon thereupon.  In order that a percentage greater than 50 per cent of barium oxide should be provided in the bed the granules may be initially mixed with previously calcined material, thereafter only the carbonate granules being fed.  In Example 1 the bed is kept at 945 to 965 DEG C., and has 94 to 99 per cent of barium oxide. In another embodiment the granules may be prepared without the addition of carbon, and a hydrocarbon gaseous at the calcination temperature, preferably methane, passed through the bed in reactor 22, preheating being in this case unnecessary.  A mixture of nitrogen and a hydrocarbon may also be employed without preheating and a suitably smaller quantity of carbon can then be used in the barium carbonate granules.  Other hydrocarbons than methane which are mentioned are ethane, ethylene, propane, propylene, butane, butylene, petroleum naphtha and benzene.  If desired the process may be carried out in a plurality of stages, two or more fluidized beds being provided, provided the operation is conducted so that the major portion of each bed consists of barium oxide.  In optimum operation, the beds may contain about 90 to 98 per cent of barium oxide based on the total weight of barium compounds in the bed.  The product may be used, e.g. for the production of peroxide, salts and hydroxides by the use of air, acids and water respectively.  Specification 759,821 is referred to.
Patent GB-795178-A (GB)
Title: Preparation of amino acids
IPC: C12P13/04
Filed: 1956-03-12
Abstract: Glutamic acid, tryptophane or lysine are prepared by cultivating a strain of Aspergillus terreus under an aerobic condition in an aqueous nutrient fermentation medium containing a source of available nitrogen.  The source of available nitrogen may be added at the beginning or during the fermentation and may be inorganic or organic in character, e.g. amino acids, proteins, ammonium salts such as ammonium sulphate and nitrate, nitrates and urea may be used.  The process is preferably operated at a pH of about 5.5 to about 8.8, and a temperature of approximately 25 DEG  to 32 DEG  C. may be used. After the nutrient medium has been prepared, it may be adjusted to a pH of from about 5.5 to 8 before the fermentation.  The amino-acids may be recovered from the fermentation broth by acid hydrolysis-particularly in the case of glutamic acid, or glutamic acid may be recovered through the intermediate formation of the hydrochloride, calcium or sodium salt.  In the examples, glutamic acid, tryptophane and lysine are prepared.
Patent GB-1516621-A (GB)
Title: Cutting die assembly
IPC: B26F1/44
Filed: 1977-02-23
Abstract: 1516621 Cutting dies SANDVIK AB 23 Feb 1977 [24 Feb 1976] 07727/77 Heading B4B A cutting die assembly comprises a cutting die 2a, base plate 1 and means for fastening the die to the plate, wherein the means comprises a plurality of clamp members 7 inserted through die slots 4, 5 for engagement with the die, the lower part of which is inserted into a base plate slot 3, the clamp members being fastened to the base plate by fastening elements 12, 13, 14, 15. The elements 13, 14, Fig. 3, are made of resilient material.
Patent GB-738039-A (GB)
Title: Improvements in or relating to book-trimming machines
IPC: B26D7/01
Filed: 1953-03-20
Abstract: 738,039. Operating clutches. PINNACLE PRESS PTY., Ltd. March 20, 1953 [Sept. 5, 1952], No. 7747/53. Class 80 (2). [Also in Groups VIII and XXX] In a book trimming machine (see Group VIII), a shaft 258 is rotated intermittently from a rotating shaft 27 through the intermediary of a friction clutch comprising a disc 249 fixed on the shaft 27 and a coacting disc 248 freely mounted on the shaft 27 and faced with friction material 248a. The disc 248 is formed integrally with a chain sprocket 252 having a slotted boss 252a into which pass shoes pivotally attached to horizontal bars 244 the free ends of which are pivotally secured to the upper and lower ends of a block 243 having secured thereto a rod 242 provided with a collar 241. The collar 241 has secured thereto one end of a lever 238 pivotally mounted on the frame of the machine at 239 and provided at its other end with a roller 240 engaging an adjustable cam 234, 235. The disc 248 is normally urged into contact with the disc 249 by a spring 253 but the discs are drawn apart by the bars 244 when the cam 234, 235 displaces the lever 238.
Patent GB-312721-A (GB)
Title: Improvements in or relating to the manufacture of boots and shoes and to machines employed therein
IPC: A43D79/00
Filed: 1928-03-14
Abstract: 312,721. Gimson Shoe Machinery Co., Ltd., Choice, F. C., and Underwood, W. J. M. March 14, 1928. Heels, machines for.-A machine for attaching heels or heel seats to boots and shoes has a work support furnished with means for engaging the work on the inside for centralizing the work on the support prior to the insertion of the fasteners, and means for compressing the work after the fasteners have been driven. The work support 4 has a shank 5 normally elevated by a compression spring, and is bored to receive drivers 7 rigid with a stand 3 removably mounted on the bed 2 of the machine. The work support has centralizing members 8 pivoted at 9 and connected by a spring 10. They are engaged by inclines 12 on a slide 11 resiliently connected to a plunger 13 projecting beyond the heel end of the support. A presser plate 18 is adjustably connected to a plunger 17 operated by a lever 21 connected to a treadle rod 23, the lever and plunger being carried by the usual power-reciprocated beam 25. A strong spring 27 abuts against an adjustable nut 29 and a loose collar 28 adapted to engage the lower surface of the beam 25. In operation, the work is placed on the support, the plunger 13 being engaged by the inside of the heel end of the shoe and opening out the members 8 to centralize the work. The treadle is then operated to clamp the work by descent of the member 18. Preferably, some usual mechanism connects the treadle with the power mechanism, so that further depression of the treadle causes descent of'the beam 25. On this descent the work support. 4 yields, causing nails previously placed above the drivers 7 to be forced through the work and, if a heel seat is being attached, clinched, the powerful spring 27 exerting heavy compression at the end of the descent of the beam 25. A shield 34 prevents the upper being trapped between the moving parts of the support. Instead of, or in addition to, the spring 27, the work support may be mounted so that it can yield at the end of the operation.
Patent GB-684819-A (GB)
Title: Improvements in or relating to induction heating
IPC: H05B6/06
Filed: 1951-04-05
Abstract: 684,819. Supply systems for induction heaters. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. April 5, 1951 [May 5, 1950], No. 7895/51. Class 38 (iv). The work coil 10 of an induction heater is supplied through a transformer 14 from either a low-frequency source 24 (for preheating the work) or a high-frequency source 26 (for hardening the work), interlocked switches 18, 20, 22 preventing simultaneous connection of both sources to the transformer. A further switch 32 allows an adjustable reactor 34 to be included in the low-frequency circuit. A similar reactor 28 is also included in the high-frequency circuit. The transformer may be tapped to allow greater variations of power input than can be accommodated by the reactors. In a modified arrangement switch 32 is omitted, the reactor 34 and condenser 36 then directly shunting the primary of the transformer when the lowfrequency source is in operation. The sources 24, 26 may supply a number of transformers and associated work coils, the arrangement being such that whilst source 26 can supply only one transformer at a time, the source 24 may supply several other transformers simultaneously.
Patent GB-270866-A (GB)
Title: Improvements in, or relating to, wrapping or packeting machines
IPC: B65B11/30
Filed: 1926-03-24
Abstract: 270,866. Rose, W., and Rose Bros. (Gainsborough), Ltd. March 24, 1926. Addition to 237,734. Packeting by wrapping-up. - In wrapping- machines of the kind described in the parent Specification, the support element 7<a>, for holding the flap 5<a> of the wrapper in a convenient position to be acted upon by a folder 35, is adjustably secured by screws 8<a> to a lever-arm 9<a>. The lever-arm is connected by a bridge piece 34a to an arm 33<a>, which at its other end is connected to a lever 22<a> co-operating with a cam 21. The bracket 11<a> carrying the fulcrum 10<a> of the arms 9<a>, 33<a> is secured to a bracket 15a on a boss 14<a>, an extension 17<a> of which is actuated bv a cam 13a to cause the device to move with the mould wheel 1 during the periods of rotation, the support element being meanwhile raised by the cam 21. Similar apparatus operates on each side of the wheel, and the flap 5 may also be raised by support elements.
Patent GB-307835-A (GB)
Title: Improvements in filter insertions for respirators
IPC: A62D7/00
Filed: 1929-03-12
Abstract: 307,835. Horßk, V., (trading as Horak, V., [Firm of]). March 14, 1928, [Convention date]. Respirators. - A filter insertion for gas-masks &c. is obtained by compressing vegetable fibres, which may be cut into short pieces, together with a binding material in a mould, and then carbonizing and activating in known manner. In an example, hemp, jute, flax or like fibres, cut into short pieces, are compressed with argillaceous earth, infusorial earth, resin, starch or other binding medium, dried and activated.
Patent GB-348281-A (GB)
Title: Improvements in and relating to light-sensitive paper
IPC: G03C1/785
Filed: 1930-03-13
Abstract: 348,281. Photographic paper-negatives. TACKELS, J., 149, Rue de la Bruyere, Genval, Belgium. March 13, 1930, No. 8158. [Class 98 (ii).] For the production of paper negatives raw paper or paper which has already been coated with an underlayer of barium sulphate, chalk, starch milk, formol or other known substances employed for this purpose, is treated with acid, such as sulphuric acid, in a coating machine, and then coated with a silver emulsion to which has been added from 0À2 to 6 per cent of a fatty or oily substance. Examples of the latter are polyalcohols, (such as glycerine), Lanoline, Vaseline, hydrocarbon derivatives (such as liquid paraffin). The oily substance should be chemically inert as regards the emulsion, the speed of which is increased by the addition.
Patent GB-104800-A (GB)
Title: Improved Bit for Cutting Circular Apertures in Wooden Cases, Casks and the like.
Inventor: FLETCHER JOSEPH
IPC: B23B51/04
Filed: 1916-06-09
Abstract: 104,800. Fletcher, J. June 9, 1916. Augers.-A hollow auger for boring holes in tea chests, casks, &c., to facilitate taking a sample of the contents, comprises a shank 7, Fig. 2, carrying a centre pivot 9 and secured to receive a cup 4 and lock-nut 13. The sheet-metal cutter 2 is retained by a disk 10 and by screws passing through the cup and cutter and into the disk. Notches 3 facilitate the removal of the core. In a modification particularly designed for cutting through metal-lined boxes, the shank is tubular and contains a rod gimlet-pointed at 14, Fig. 5, and having a knob 18 projecting through a bayonet-slot in the shank. The screw point draws the lining against the case during cutting by a pair of extended knife-edged teeth 2<a>. The core is removed by turning till the knob can be pressed down the axial portion of the slot. According to the Provisional Specification, the bit may be employed for cutting out wooden wheels for toys.
Patent GB-512697-A (GB)
Title: Improvements relating to the separation of solids of different specific gravities
IPC: F16P3/00
Filed: 1938-03-17
Abstract: 512,697. Wet-separating. SIMON-CARVES, Ltd., and ADAMS, V. H. March 17, 1938, No. 8242. [Class 82 (ii)] Before subjecting a mixture of solids of different specific gravities to float and sink separation the heavier solids are removed by treating the mixture in a Baum jig.
Patent GB-217979-A (GB)
Title: Improvements in or relating to pneumatically-operated musical instruments
IPC: G10F5/00
Filed: 1923-03-23
Abstract: 217,979. Evans, W., and Chappell Piano Co., Ltd. March 23, 1923. Exhausting air; expression-controlling. - A suction-conduit in any part of the instrument includes a tube having an elastic wall which will materially restrict the cross-section of the tube when the pressure difference exceeds a predetermined value. The tracker-bar connections may comprise such tubes, preventing full suction from reaching the tracker-bar and enabling a single degree of suction to be used. Fig. 2 shows the application of such a collapsable tube 39 to an expression device, wherein suction at 47 normally passes through this regulating tube 39 to the action at 40, but on tracker-bar operation of the valve 30 passes direct to the action through the valve aperture 32 and connection 36.
Patent GB-134860-A (GB)
Title: Improvements in or connected with the Shuttering or Moulding Means for the Manufacture of Concrete Navigable Vessels
Inventor: BRAZENDALE FRNK
IPC: B63B9/06
Filed: 1918-05-21
Abstract: 134,860. Brazendale, F. May 21, 1918. Moulds for building. - The shuttering or moulding mean for the manufacture of concrete navigable vessels are constructed of self-contained sections or units bolted together. Fig. 1 shows two midship sections connected together. The vertical members 1, 2 are connected at the top by continuous bars 6, 7, 15 and at the bottom by bars 14, 16, and are braced together by members 3, 4. The bottom portion of the shuttering consists of top and bottom members 1<x>, 2<x> connected by bracing 3<x>. The two parts of the sections are connected together at an angle depending on their position in relation to the ship, and near the bow and stern an intermediate inclined member is also included. The whole structure is supported below by concrete sleeper walls 10 under the end frames of the sctions, through the medium of longitudinal wooden sleepers 12 supported on wedges 11 and wooden blocks 13. The inner faces of the sections are provided with longitudinal wooden bearers 15 and fillets 17, the whole surface being covered with a metal sheathing 20. At the bow and stern sections, the intermediate inclined portion is supported at its ends on wooden trestles. When the vessel is completed, the bolts connecting the sections are withdrawn and the wedges removed, so that the section may be removed by a travelling crane or the like. Alternatively, some or all of the sections may rest on rollers or wheels, so that they may be readily moved into position. In a modification, Fig. 8, the whole shuttering section may be made in one piece, supported on rollers 25. The section shown is used near the stern frame, and the main members 1, 2, 1<x>, 2<x> and bracings 3, 3<x> correspond to those described in connexion with Fig. 1.
Patent GB-871873-A (GB)
Title: Improvements relating to drafting arrangements for textile spinning machines
IPC: D01H5/44
Filed: 1959-03-11
Abstract: 871,873. Drafting textile fibres. RIETER & CIE A. G., J. J., March 11, 1959 [March 12, 1958], No. 8416/59. Classes 120(2) and 120(3) A drafting arrangement for textile spinning machines comprises at least two groups of rollers forming a drafting field between the nips of the roller groups, at least one of the said nip-forming groups being swingably supported below the drafting field so that the distance between the nip-forming roller groups can be changed by swinging the swingable group. As shown, a feed roller 3 is mounted in bearing blocks 7 rigidly attached to arms 6, top rollers 4 being mounted in holders 10, 11 loaded by pressurised fluid in a hose 16 pressing the hose against shoes 17, the pressure being transmitted by linkages 18 to the holders 10, 11. The arms 6 are rigidly attached to a pipe 13 so that the rollers 3, 4, arms 6 and pipe 13 pivot as a unit about the axis of the pipe 13. A roller trio 26, 27, 28 is similarly mounted on arms 31, weighting for the the top roller 28 being provided by a hose 34 in a pipe 33 movable with the arms 31 in slots 40 in the stand 2 as the arms 31 pivot about the axis of the pipe 13. Scales 24 are provided on the stands 2 to indicate the position of the roller groups 5, 29 relative to the fixed delivery roller group 41. The drives for the lower rollers are maintained constant in any position of the movable roller groups by means of rocking levers between the shafts of their pinions and the main drive shaft, the pinions rolling on their corresponding gears. Pivoting of the roller groups is said to give a better control of the material being drafted due to the fact that the material contacts a larger area of the drafting roller surface than displacement in the plane of the drafting field when the distance between the rollers groups is relatively great.
Patent GB-766817-A (GB)
Title: Ethoxyline resin compositions
IPC: C09D5/25
Filed: 1954-03-23
Abstract: A synthetic resin composition comprises an epoxy resin and shellac preferably in an amount of 10-90 per cent by weight of the composition.  On heating the composition the shellac reacts with the epoxy resin to cure it, but additional curing agents may also be present, e.g. tetrachlorophthalic anhydride.  The composition dissolved in a mixture of alcohol and toluene may be used to coat aluminium.  It may also be used for impregnating or laminating (see Group VIII), or for casting or moulding.  A filler, e.g. "Silex" (Registered Trade Mark) brand silica gel may be added.
Patent GB-696053-A (GB)
Title: Improvements in or relating to the manufacture of uranium salts
Inventor: MORRIS GEORGE OSWALD
IPC: C01G43/00
Filed: 1942-06-19
Abstract: Uranium salts are produced by dissolving uranium tritaoctoxide, U3O8, in a solution of a mineral acid, e.g. sulphuric or hydrochloric, containing an oxidizing agent, preferably nitric acid, in amount at least sufficient to bring the uranium to the hexavalent stage. 25-100 per cent excess mineral acid may be used, the dissolution being suitably effected at 70-80 DEG C. 1-2 per cent excess nitric acid may be used with sulphuric acid, and 70 per cent excess when employing hydrochloric.  when solution has been effected, nitric acid, &c. is removed by boiling and/or blowing with air, and the solution cooled, diluted, filtered, and reduced electrolytically, or by zinc, or by stannous chloride crystals in the presence of acid at the boiling point.  The liquor now containing, say, precipitated uranium disulphate tetrahydrate may be subjected to the process of Specification 696,054 for the production of uranium tetrafluoride.
Patent GB-715098-A (GB)
Title: Improvements relating to suction cleaners
IPC: A47L9/32
Filed: 1952-04-03
Abstract: 715,098. Suction cleaners. HOOVER, Ltd. April 3, 1952 [April 3, 1951], No. 8592/52. Classes 8 (1) and 8 (2). [Also in Group XXXVII] A motor fan suction cleaner of the handle propelled type has a filter assembly e.g., a cover 23, Fig. 2, and a paper filter bag 23 supported near the top of the handle 13, Fig. 3, by means e.g., a rubber sleeve 39 through which an electric cable 28 extends between the top of the handle and the cleaner body. The sleeve 39 which acts as a cable strain relief member has an integral cross-bar 50 by which it is secured in a cover clamp 53, and has a collar 44, by which it is held in a switch and connector casing 35 normally held by a screw 49 in a handle recess 46 but detachable therefrom as a unit e.g., when packing for transport. A strain relief member 34 for a supply cable 33 is similarly carried by the casing 35. The filter bag 23 is connected 'by a flexible bellows 16 and an adapter 19 to an eccentric opening in a plate 26 secured to the exhaust duct 9 of the motor fan unit which latter is pivoted with the handle 13 about an axis transverse to the direction of movement of the cleaner, and for emptying is thus able to be swung through an elongated opening in the cover 28 normally closed by a slide fastener 30. In a modification wherein the fan axis is vertical, the strain relief member is of the coil spring type and the filter adapter has a downwardly extending arm pivoted about a transverse horizontal axis.
Patent GB-231870-A (GB)
Title: Improvements in or relating to photographic film cartridges and protective leading strips or backings therefor
IPC: G03C3/02
Filed: 1925-04-01
Abstract: 231,870. Kodak, Ltd., (Assignees of Jones, J. G.). April 2, 1924, [Convention date]. Roll spools.-In a roll film cartridge in which the protective paper backing or leading-strip, preferably having edges of reduced thickness, is of greater width than the film or than the distance between the spool flanges the fibres of the paper at these edges are so pulled or directed during manufacture that they are predominantly arranged transversely to the length of the strip. The edges so formed are brush-like, as shown in Fig. 2, and readily crumple against the spool flanges to exclude light when the film and strip are interwound upon the spool.
Patent GB-804901-A (GB)
Title: Capacitance bridge oscillator
IPC: G01F23/26
Filed: 1956-03-20
Abstract: 804,901. Electric tests. BENDIX AVIATION CORPORATION. March 20, 1956 [April 1, 1955], No. 8699/56. Class 37. [Also in Group XL (c)] In a system in which the depth of a liquid in a tank is arranged to vary the overall capacitance of a bridge circuit the bridge is associated with an inductance to form part of an oscillatory circuit the bridge output being connected to an output circuit. This arrangement is said to avoid the usual coupling between the oscillator and bridge circuits. As shown the oscillator comprises a triode 11 having a piezo crystal 15 and resistor 16 in its grid circuit its plate being connected through inductance 19 and resistor 21 to the supply. In parallel with inductance is a bridge circuit consisting of condensers 24, 25, 26, 27 and 28 and a trimming condenser 29. Condenser 28 may be as described in Specification 803,099 in which it is used for measuring the level of liquid oxygen in a container. The Specification states that the various capacitances involved are so chosen that the oscillator operates approximately mid-way between its resonant frequency and the second harmonic over a frequency range at which the input current to the bridge circuit is approximately constant. The output circuits connected across bridge diagonal II-IV comprises a double diode rectifier 32, smoothing condensers 44, 45, ammeter 24 and calibrating potentiometer 36.