baber/WOPTO huggingface dataset:
Patent GB-639102-A (GB)
Title: Automatic voltage control of electric converters
IPC: G05F1/32
Filed: 1948-04-30
Abstract: 639,102. Converting ; automatic control systems for electricity supply. SIEMENS BROS. & CO., Ltd., and DOUBLE, H. S. April 30, 1948, No. 11837. [Classes 38 (ii) and 38 (iv)] In a rectifying arrangement in which the output voltage is regulated by a saturable choke in its input circuit the choke has a D.C. winding, energized from a D.C. amplifier supplied with current derived from the A.C. mains supply through a passive fourterminal network adapted to give, with fluctuation of the mains voltage, a falling network output voltage for a rising network input voltage and vice versa. The amplifier preferably consists of a magnetic amplifier ; and the passive network a transformer having connected across its primary the input terminals of a voltage stabilizer and in series voltage opposition with its secondary the output terminals of the stabilizer to effect the required change in output voltage with change in input voltage. In the arrangement described, adapted to produce, in addition, constant voltage with a droop near maximum current output, across the output terminals (to which is connected a storage battery and load circuit in parallel) the A.C. windings I of the chokes CHA, CHB, CHC are connected in series with the star connected primary windings PA, PB, PC of the 3-phase mains transformer, the secondary windings TR of which supply the load terminals TL through rectifier MR. Each choke has D.C. controlling windings II and III assisting each other and an opposing biassing winding IV. Windings II, adjustable by diverter YB, are in series with the load circuit and with the smoothing chokes CHS, CHSS ; windings IV, adjustable by series resistance YF, are connected across the rectifier output terminals. The windings III are energized by the magnetic amplifier arrangement made up of the transformer TRA supplied from the passive four terminal network FTN, auxiliary rectifier AR and a pair of chokes CHE, CHF, each with a winding I in the A.C. supply lead to the rectifier AR, a winding III in the D.C. output circuit of the rectifier and a D.C. controlling winding II which latter are connected to two terminals of a bridge VSN having its other two terminals connected to the load terminals TL and including in the bridge arms non-linear impedances BRX, BRY, and adjustable resistances YXA/B, YYA/B.
Patent GB-876951-A (GB)
Title: Improvements in or relating to self-supporting explosive compositions and to their production
Inventor: BREZA CYRIL JAMES
IPC: C06B45/10
Filed: 1960-04-04
Abstract: 876,951. Explosive compositions. DU PONT DE NEMOURS & CO., E. I. April 4, 1960, No. 11876/60. Class 9(2). A self-supporting deformable explosive composition comprises 70-92À5% by weight of a cap sensitive crystalline high-explosive admixed with 30-7À5 % by weight of a binding agent comprising an elastomer and a thermoplastic terpene hydrocarbon resin. The binding agent preferably consists of 25-75% of the elastomer, which may be butyl rubber, polyisobutylene, natural rubber, GR-S, neoprene, and those known under the Registered Trade Marks "Thiokol", "Buna N", and "Hypalon" S-2, the remainder being the terpene resin, which may be Piccolyte S10 or S70. The binder may be added in the form of a solution in hexane which is subsequently evaporated. The high explosive component may be RDX, PETN, HMX, Nitromannite, or ethylenedinitramine, or a mixture of one of these substances with ammonium nitrate. Specifications 564,211 and 765,305 are referred to.
Patent GB-550964-A (GB)
Title: Improvements in electric motor control systems for web winding equipment
IPC: H02P5/68
Filed: 1941-09-17
Abstract: 550,964. Automatic speed control. MASON, F. R, and METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. Sept. 17, 1941, No. 11929. [Class 38 (iv)] [Also in Group XXXVII] A motor M drives a calender &c. processing a web of paper &c., the web is wound-up by a motor RM and the let-off reels drive a generator BG, the machines RM, BG being connected in parallel to a generator CM which is driven by, and the voltage of which varies with the speed of, the motor M, and being regulated by field control for constant armature current so as to maintain constant tension on the web. Regulation of the field of the motor RM is effected by a split field pilot motor DR under the control of a relay OCRR connected across a shunt CRS. A rheostat RTR adjusts the tension, and a low current relay CR opens its contacts when the web breaks and stops operation of the pilot motor DR, so that the field of the motor RM is approximately at correct value when the web is repaired. Manual adjustment can be made by moving switch COR to its lower contact and using push-button RP. Similar control is associated with the machine BG. The generator CM is driven by the motor M and has its field rheostat linked to that of the motor M. A drum DC controls contactors in the starting circuit of the motor M,
Patent GB-921058-A (GB)
Title: Improvements in or relating to the treatment of cellulose textile materials
IPC: D06M15/423
Filed: 1960-04-05
Abstract: Water soluble alkyl hydroxy alkyl cellulose mixed ethers are prepared by the action on alkali cellulose of 1 mol. of an alkylating agent, e.g. methyl or ethyl chloride or bromide, and 3 mols. of a hydroxy alkylating agent, e.g. ethylene oxide, propylene oxide or ethylene chlorohydrin.  Specifications 518,072, 688,135, 710,441 and 775,913 are referred to.ALSO:Crease resistance, wrinkle resistance and non-shrinking properties are imparted to textile materials made from regenerated or natural cellulose, e.g. cotton, by treating them with an acid aqueous solution containing a water-soluble substance convertable by heat into an insoluble resinous substance and a water-soluble alkyl hydroxyalkyl cellulose mixed ether prepared by the action on alkali cellulose of 1 mol. of an alkylating agent, e.g. methyl or ethyl chloride or bromide, and 3 mols. of a hydroxyalkylating agent, e.g. ethylene oxide, propylene oxide or ethylene chlorohydrin, per glucose anhydride unit, and heating the treated materials, if desired after an intermediate drying step, to a temperature above 100 DEG C. to convert the water-soluble substance into an insoluble resinous substance.  Suitable resin-forming substances are formaldehyde, glyoxal which is preferably used with an aldehyde carboxylic acid, e.g. glyoxalic acid as condensation catalyst, monomethylol urea, dimethylol urea, melamine-formaldehyde condensates, monomethylol biuret, dimethylol biuret and the reaction product in neutral to slightly alkaline medium of methylol urea and glyoxal.  The treating solution may contain 1-5 grams per litre of the alkyl hydroxyalkyl cellulose.  The pH value of the treating solution may be adjusted to between 3 and 5 and the solution may also contain condensation catalysts, e.g. magnesium chloride, aluminium chloride, ammonium chloride, ammonium nitrate and borate. Specifications 518,072, 688,135, 710,441 and 775,913 are referred to.
Patent GB-1291029-A (GB)
Title: Separation of aromatics from hydrocarbon mixtures containing aromatics
IPC: C07C7/08
Filed: 1971-04-29
Abstract: 1291029 Extractive distillation HEINRICH KOPPERS GmbH 29 April 1971 [18 July 1970] 12097/71 Addition to 1139630 Heading C5E The process of the parent Specification for the extractive distillation of hydrocarbon mixtures to separate aromatic hydrocarbons using a-N- substituted morpholine as selective solvent is modified by passing part of the selective solvent to the extractive distillation column mixed with the hydrocarbon feedstock. Such a mixture may have resulted from a previous liquid-liquid extraction using the same solvent.
Patent GB-783760-A (GB)
Title: Means for administering hypnotics
IPC: A61K9/02
Filed: 1956-04-20
Abstract: A suppository for rectal administration is made from a fusible base, such as cocoa butter or wax, through which is distributed a compound of thiobarbituric acid.  Preferably the suppository is made as a cylindrical rod, containing a known quantity of thiobarbiturate, and this is divided by indentations or a marked wrapper so that shorter lengths, containing the appropriate proportion, can be cut off.
Patent GB-626305-A (GB)
Title: Improvements in assembling metallic vehicle bodies by spot welding
IPC: B23K11/00
Filed: 1946-04-23
Abstract: 626,305. Making vehicle bodies. ALUMINIUM FRANCAIS. April 23, 1946, No. 12226. Convention date, April 23, 1945. [Class 83 (ii)] [Also in Group XXXII] All metal automobile vehicle bodies, particularly of aluminium alloy and having a main structure of box-section members, are assembled by building-up a first unit with all the stamped flanged metal members forming the inner wall of the body, similarly, building- up a second unit to form the outer wall, nesting the first unit within the second to form boxsection members with the flanges of the inner and outer units juxtaposed and spot-welding together the flanges of the inner and outer units along the door, window, windshield, roof and luggage compartment openings- The elements A, A<SP>1</SP> forming the interior panels are secured to each other, preferably by spotwelding and the elements B, B<SP>1</SP> of the exterior panels are also secured to each other, preferably by spot-welding, and the first unit is then nested within the second and the flanges a, b spot-welded together. The floor P and roof T are then spot-welded at the flanges p, t respectively. The outer assembly may have one or two longitudinal junction lines L, L<SP>1</SP>, and L1, L<SP>1</SP>1, over the roof and rear skirt, in which are spot-welded the pieces T1 and T<SP>1</SP>1, after the assemblies are welded together. The lines L, Ll &c. may continue over the scuttle or the inner unit nested within the outer, after first opening out the rear panels and to allow of the introduction of the inner parts. Frameless bodies may similarly be made, reinforcing ribs being inserted between and spot-welded to the inner and outer units. Making boats.-The Specification as open to inspection under Sect. 91 states that boat hulls may be similarly made. This subjectmatter does not appear in the Specification as accepted.
Patent GB-1450659-A (GB)
Title: Silicate treated asbestos diaphragms for electrolytic cells
IPC: C25B11/06
Filed: 1974-03-20
Abstract: 1450659 Coated products PPG INDUSTRIES INC 20 March 1974 [21 March 1973] 12257/74 Heading B2E [Also in Division C7] A diaphragm for electrolytic cells, comprises a porous, electrolyte permeable asbestos mat of fibrous chrysotile asbestos which is coated with a silicate deposited from a solution on one surface thereof. Fine asbestos powders may be present with the fibres of the mat. The water-soluble silicates may be of lithium, sodium, potassium, rubidium and caesium. The silicate moiety may be the monosilicate, polysilicate or polysilicic acid.
Patent GB-1404092-A (GB)
Title: Container  for bulk materials
IPC: B65D88/16
Filed: 1973-03-14
Abstract: 1404092 Load handling pallets RIGOT STALARS ET VANDESMET 14 March 1973 [15 March 1972] 12258/73 Heading B8H Box pallet, for bulk material, comprises a flexible container 1 with a flexible sheet 5 secured to the bottom thereof to form a double base to receive a rigid sheet 6. Three U- shaped elements 7 are secured to the sheet to provide sleeves to receive bearers 8. The elements 7 and bearers 8 may be continuous as shown or may each comprise a series of spaced members to create a four-way entry pallet.
Patent GB-526780-A (GB)
Title: Improvements in or relating to a process for the production of polarizing bodies
IPC: G02B5/30
Filed: 1939-04-24
Abstract: 526,780. Optical polarizers. KASEMANN, E. April 24, 1939, Nos. 12315 and 12316. Convention dates, April 25, 1938, and June 28, 1939. [Class 97 (i)] Polarizers comprising coloured vigorously stretched foils of organic colloids are dyed substantially only in the surface layers. The polarizers may be as described in Specification 512,863, and dyeing may be effected after stretching and drying. Swelling of the foils during dyeing is avoided, and the foils may be treated with astringents immediately prior to or during dyeing. Dyeing may be effected by various organic dyes, or by inorganic substances such as iodine, selenium, bismuth, tellurium &c. and details of the dyeing process are described. The coloured foils may be protected by a non-porous colourless layer and enclosed between glass plates having a high absorption for short wave lengths. The stretching may be effected as described in Specification 512,863.
Patent GB-149752-A (GB)
Title: Improved apparatus for automatic and continuous analysis and recording of gases
IPC: G01N7/04
Filed: 1919-05-16
Abstract: 149,752. Brown, W. D. R., and Pickston, W. T. May 16, 1919. Gas analysis.-A sample of gas is drawn into the gasmeasuring chamber a by the fall of liquid therein, the gas entering by a pipe c; liquid is fed continuously to a communicating cistern b, and the rise of liquid in the chamber a discharges the gas first through a pipe e ending in a liquid seal a<2>, and thereafter when the inner end of this pipe is sealed, through a pipe f passing through the bottom of the chamber a, projecting into a thimble-like extension a<3> on the cover a<1>, and leading to an absorber, in connexion with which there are means for recording the proportion of unabsorbed gas and a liquid seal controlled by the emptying of the measuring-chamber, for its automatic discharge; liquid in the chamber a is evacuated by a siphon consisting of a shorter limb d of relatively large diameter and ending at a point slightly above the lower end of the pipe o, and a continuation d<1> of smaller diameter. The unabsorbed gas may be passed from the absorber j to a measuring-bell l, as shown in Fig. 1, provided with a recording-pen l<2>; and in order that the apparatus may be sensitive over the working range, the upper and non-effective part of the bell is of large diameter, and the lower, which receives gas while the record is being taken, of small diameter. In this modification, the unabsorbed gas is afterwards discharged by the unsealing of a branch pipe j<1> which occurs when the liquid in a U-tube h connected therewith, is caused to move into its other limb by the depres. sion arising from the discharge of liquid from the chamber a. In another modification, gas is discharged into the annular and sealed portion of an absorber o, Fig. 2, and the unabsorbed gas causes a rise of liquid in the space o<2>, slow at first and more rapid when the portion of smaller diameter is reached, at which moment actuation of the recording-float p commences; the unabsorbed gas eventually escapes when the end of a pipe t of inverted U-shape is unsealed by the fall of liquid in a second communicating cistern u.
Patent GB-330356-A (GB)
Title: Improvements in pistons for internal combustion engines
IPC: F02F3/02
Filed: 1929-04-22
Abstract: 330,356. Pinckney, V. A. April 22, 1929. Pistons.-In a piston of aluminium alloy or the like the bearing surfaces B between the gudgeon - pin bosses are insulated from the head C by means of slots cut through the bottom of the lowest packing-ring groove D. The ends E of the slots extend downwards and may terminate in holes F, and two or more insulating holes G may be formed in the neighbourhood of each gudgeon-pin boss. Insulating slots may also be cut through the bottom of the second packing-ring groove M. The gudgeon-pin bosses are supported by a transverse rib K extending between the bosses and by ribs L extending from each boss to the piston head. The piston skirt is formed oval, or, alternatively, may be relieved or flattened in the neighbourhood of the gudgeon-pin bosses, and the lower edge of the skirt may be cut. away below the gudgeon-pin bosses. The groove D may be fitted with an ordinary packing-ring, or with a scraper ring formed with slots or perforations as shown in Fig. 7. Lubricating passages may lead from the bottom of the groove D to the bores of the gudgeon-pin bosses.
Patent GB-826340-A (GB)
Title: Casting metal
IPC: B22C9/10
Filed: 1958-04-18
Abstract: 826,340. Cores. DOW CHEMICAL CO. April 18, 1958 [April 24, 1957; Dec. 30, 1957], No. 12412/58. Class 83 (1). A core, which may be used in the casting of magnesium, aluminium and alloys thereof, comprises a sleeve of woven heat-resisting fibres having a coating thereon bonding the fibres together into a rigid form, said coating becoming friable on being heated by the cast metal. The sleeve, which may be of branched form, Fig. 14, is formed on a fusible mandrel, of, e.g., a low melting-point alloy. The sleeve may be of ceramic or silica such as soda-lime or borosilicate-glass or metal, such as stainless steel, copper, or tinned copper, and coated with shellac or a mould wash of clay mixed with sand or other refractory oxide or silicate such as zirconium-silicate. After melting out the mandrel, the sleeve may be further stiffened by filling with a free-flowing particulate material such as shell-moulding mix, which is then set by curing. After casting, the sleeve is removed by pulling, causing it to contract diametrically. The cored hole may then be cleaned of remnants of the coating by a solution of hydrofluoric acid, or by ultrasonic cleaning.
Patent GB-353916-A (GB)
Title: Improvements in weighing apparatus
IPC: G01G19/22
Filed: 1930-04-23
Abstract: 353,916. Weighing-apparatus. TOLEDO SCALE MANUFACTURING'CO., Monroe Street, Toledo, Ohio, U.S.A. April 23, 1930, No. 12526. Convention date, Feb. 17. [Class 143.] Apparatus for determining percentage of moisture in moist material, particularly wet sand, comprises a lever 5, pivoted at 3, 4 on the horn 2 and carrying a scale pan 9, weights of articles in which are indicated on the scale 14. Arms 15, 16 support the frame 17 provided with projections 18, 19 carrying the threaded shaft 20 on which are the supports 23, 24 with pivots 21, 22 for the bearing loops 26, 27 carrying the hooked members 28, 29 for the buckets 30, 31 adapted to be immersed in the tank of water 46. The threaded shaft 20 carries half left-handed threads and half right-handed threads and, the supports 23, 24 can be moved equally in opposite directions along the shaft 20 for adjustment by rotating it through the knurled knob 25. The shaft 20 can be positioned longitudinally so that the supports 23, 24 are equidistant from the pivots 3, 4 through a reduced end of the shaft 20 being positioned in the bush 35 adjustably threaded in the projection. 18 as shown in Fig. 7. The bearing loops 26, 27 and suspended buckets can be removed from their pivots 21, 22 by moving the plunger 41 upwards carrying with it the yoke 42 with troughlike ends 43, 44 for contacting with the loops 26, 27, a spring catch 45 slipping beneath the yoke 42. Equal weights of wet and dry sand are then weighed out in the pan 9 and placed in the buckets 30, 31 respectively which are then lowered through the plunger 41 and yoke 42 so as to be submerged in the tank 46. The pull on the lever 5 due to the moist sand being less in water than that due to the dry sand, the pointer 13 coacts with a scale to give percentage amount of moisture compared with dry material in the moist sample. The apparatus can be used with sand of different specific gravities by suitable adjustment of the supports 23, 24 through the knurled knob 25 which is turned with the dry sand sample in bucket 31 and empty bucket 30 only submerged until the pointer 13 points to the full capacity mark on the scale, the apparatus being then ready for the test.
Patent GB-279144-A (GB)
Title: Improvements in cap spinning, doubling, twisting and like machines used in the production of yarns or threads
IPC: D01H1/06
Filed: 1926-05-17
Abstract: 279,144. Stell, A., Stell, J., and Welch, H. May 17, 1926. Doffing-arrangements; thread-holding and thread-severing arrangements; spindle apparatus; thread guides. - To permit the use of doffing- mechanism in cap frames using long bobbins without extending the height of the machine, flanges 15<a> are provided on the caps about midway of their length and are adapted to be engaged by a sliding plate 16, Fig. 7, on brackets 17 operated by the usual rack mechanism 18, the thread guide board 24 being hinged on an extending portion of the bracket 17 so that it is displaced by the cap when it is raised to be engaged by the plate 16. The full bobbin pegs 38 and the empty bobbin pegs 33 are respectively carried by a bar 37 and a rail 32 connected by a lever 31 and a slotted rod 35 so that, when a notched handle 40 connected to the lever 31 is operated and adjusted in positions determined by the engagement of its notches with a pin 30<d>, the pegs are suitably disposed relatively to the spindle to receive the full bobbins therefrom and to permit the raising of empty bobbins thereon and, during such movements, are tilted to clear each other and to allow free passage for the bobbins. During spinning the pegs occupy the positions shown in Fig. 3. the central notch of the handle 40 being engaged with the pin 30<d>; and during the doffing operations the inner and outer notches are engaged to dispose the pegs 38 and 33 successively beneath the caps, which are advanced by the rack gear 18 to permit this operation to the position shown in Fig. 5. The bobbin pegs and their operating-gear are carried by a rack 30 which is raised and lowered as required by a pinion and handle 44. The bobbins are supported during transit by slotted flanged arms 27, Fig. 10, which are operated and retained in position by a handle 26<k> and are provided with hexagonal members k carried by a pin h rotatable and slidable in the arms so as to ensure contact with the bases of the bobbins. Prior to restarting, the rack 30 is operated suitably to position the full bobbins and the yarns extending therefrom are engaged by fingers 28a on a slidable shaft 28, which is then turned so that the yarns are engaged by the notched wharl and broken upon re-starting.
Patent GB-649013-A (GB)
Title: Improved wax compositions suitable for floor polishes
IPC: C09G1/10
Filed: 1948-05-07
Abstract: A composition suitable for a floor polish comprises an aqueous medium containing one disperse phase comprising a wax and a second disperse phase comprising a resinous film-forming material, the composition preferably containing between 0.5 and 3 parts by weight of wax for every part by weight of resinous film-forming material.  Preferably the wax comprises between 15 per cent and 30 per cent by weight of the composition, the resinous film-forming material comprises 10-30 per cent by weight of the composition and the aqueous phase comprises water and one or more dispersing agents.  The wax may be carnauba wax, beeswax, candelilla wax, ceresine or montan wax.  The resinous film-forming material may be polyvinyl acetate, polystyrene, polymethylmethacrylate, or polymerized methyl acrylate, to any of which a plasticizer may be added, or may be a mixture of a vulcanized oil and an oil-soluble resin of the type described in Specification 571,832, a coumarone-indene resin, an oil-soluble phenol-formaldehyde resin, an alkyd resin, rosin or an ester gum. Minor proportions of disinfectants or colouring matters may be incorporated.  The compositions may be prepared by adding an emulsion of the resinous material to an emulsion of the wax.ALSO:A floor polish comprises an aqueous medium containing one disperse phase comprising a wax and a second disperse phase comprising a resinous film-forming material, the composition preferably containing between 0.5 and 3 parts by weight of wax for every part by weight of resinous film-forming material. Preferably the wax comprises between 15 and 30 per cent by weight of the composition, the resinous film-forming material comprises 10-30 per cent by weight of the composition and the aqueous phase comprises water and one or more dispersing agents.  The wax may be carnauba wax, beeswax, candelilla wax, ceresine or montan wax. The resinous film-forming material may be rosin.  Minor proportions of disinfectants or colouring matters may be incorporated.  The compositions may be prepared by adding an emulsion of the resinous material to an emulsion of the wax.