baber/WOPTO huggingface dataset:
Patent GB-993453-A (GB)
Title: New derivatives of heparin and processes for their preparation
IPC: C08B37/10
Filed: 1964-02-26
Abstract: The invention comprises O-methyl-N-methyl heparinamides and non-toxic salts thereof.  The compounds may be prepared by reaction of a long-chain quaternary ammonium salt of an N-methyl heparinamide (Specification 973,893) with a methyl halide in presence of silver oxide, to form an O-methyl-N-methyl heparinamide in which the sulphonic acid groups are unesterified. The reaction may be carried out in an inert organic solvent, e.g. tetrahydrofuran, at below room temperature.  The amounts of amidation and of methylation of the O-methyl-N-methyl heparinamide are preferably 60-100%. The compound may be converted to an alkali metal salt by reaction in aqueous medium with an alkali metal carboxylate e,g. sodium acetate. The salt may be isolated by precipitation in presence of an alkanol.  The O-methyl-N-methyl heparinamides are used, in conjunction with carriers, as pharmaceutical compositions having antilepaemic activity (see Divisions A5).ALSO:Pharmaceutical compositions having antilipaemic activity contain an O-methyl-N-methyheparinamide (Division C3) in association with a carrier.  The compositions may be administered as a tablet or coated tablet, when the carrier is a tablet base and/or diluting agent; perlingually, in the form of a glossette; rectally, in the form of a suppository, when the carrier is a suppository base, and subcutaneously by intramuscular or intravenous injection, when the carrier may be a sterile aqueous or non-aqueous injection solution or suspension medium.  The injection may be presented in unit dose ampoules or multi-dose containers and may contain an antioxidant, a buffer, a bacteriostat and/or a solute which renders the medium isotonic with the blood.  Alternatively, the injection solution or suspension may be formed extemporaneously, immediately prior to administration, from a sterile tablet or powder containing the specified ingredients and binding agents and/or lubricants.
Patent GB-254010-A (GB)
Title: Improvements in or relating to the chimneys, ventilating shafts and uptakes of houses and similar buildings
IPC: E04F17/00
Filed: 1925-03-25
Abstract: 254,010. Burditt, T. H. F. March 25, 1925. Moulds.-A mould for forming chimneys &c. having fireclay or like hollow tiles embedded in concrete consists of a base m, side walls m<1> and end walls m<2>, the sides being connected with brackets n, Fig. 4, fitted with bolts n<1>, n<3>, for moving the sides to and from the brackets. The tiles are provided with projections c on the base and, if desired, on the sides to abut against the mould parts, in order to position the tiles in alignment. Circular tiles f are also arranged in position as in Fig. 2 and upper parts m<3> are fitted for moulding projections on the chimney. The chimney may also be moulded by supporting the tiles on a girder.
Patent GB-862392-A (GB)
Title: The production of metal chlorides
IPC: C22B34/12
Filed: 1957-03-12
Abstract: Iron and/or titanium chlorides are obtained by bringing a mixture of carbon and a metal oxide-bearing material containing as its principal metal component titanium oxide or iron and titanium oxides, for example ilmenite, rutile, and slags, into contact with hydrogen chloride as the sole chloridising agent, the amount of carbon in the mixture being sufficient to prevent the formation of water as reaction product, thereby obtaining iron and/or titanium chlorides, elemental hydrogen, and a carbon oxide or oxides.  Preferably the chloride obtained is volatilized and condensed out of the issuing gases and the bed is fluidised or maintained in dynamic suspension by the hydrogen chloride, either alone or with the assistance of an inert gas.  To obtain titanium tetrachloride a temperature of at least 1250 DEG C. is employed, whereas iron chloride may be selectively formed at 650 DEG C.-1100 DEG C. Thus, a mixture of iron and titanium oxides may first be chloridised at 650 DEG -1100 DEG C. to remove the iron as chloride, and the iron-free residue then treated by the above method at at least 1250 DEG C. to recover iron-free titanium tetrachloride, or the iron chloride first obtained may be oxidised to form iron oxide and elemental chlorine, and this chlorine used to chlorinate the residue to obtain titanium tetrachloride.
Patent GB-327268-A (GB)
Title: Improvements relating to pneumatic tyres
IPC: B60C13/00
Filed: 1929-03-13
Abstract: 327,268. Hitchner, J. C. March 13, 1929. Jackets and covers. -A tyre cover comprises inner side wall portions 10 forming an air-tube cavity, preferably of oval - section, and outer side-wall portions 8 formed with enlargements 17 to provide side cavities 6 under the tread 4. The cavities 6 are preferably disposed within the width of the rim-seating portions 3, and the side-walls 8, 10 may be cemented together in use.
Patent GB-247767-A (GB)
Title: Improvements in or relating to rectifying elements for high frequency electrical oscillations
IPC: H01L21/04
Filed: 1925-03-26
Abstract: 247,767. Wade, H., (Carborundum Co.). March 26, 1925. Crystal detectors.-A rectifying element comprising a fragment 2 of silicon carbide has part of its surface coated with a metal film 3, e.g. silver or copper deposited by electrolysis, a further coating 4 of non-oxidizable metal or alloy, such as lead or tin, being subsequently applied. A block of solder or like expanding alloy is then cast around the coating 4 to form a metal base, by placing the crystal and the solder &c. in a rigid mould, thereby producing intimate contact as the molten metal solidifies. The crystal is freed from surface impurities by treatment with strong caustic solution, and subsequently by nitric, hydrofluoric, or other acids; or other cleaning agents may be used. The first metallic film 3 may be applied by spraying or other means. Specification 251,408 is referred to.
Patent GB-820889-A (GB)
Title: Ceramic capacitor and method of forming same
IPC: H01G4/228
Filed: 1956-03-16
Abstract: 820,889. Capacitors. CLEVITE CORPORATION. March 16, 1956 [March 21, 1955], No. 8282/56. Class 37. A capacitor comprises a non-composite body 11, of high permittivity ceramic, containing a plurality of parallel holes 12-19 each having an elongated rectangular cross-section and spaced from each other in the direction of the smaller dimension of the elongated rectangles; conductive material affixed within the holes; and terminal leads 23, 24 attached to the conductive material so that different terminal leads are attached to the conductive material in adjacent holes. As described, the ceramic comprises 10% calcium zirconate, 10% strontium titanate, and 80% barium titanate. The parallel holes are laterally staggered; holes 12-15 lying to the left of holes 16-19 in Fig. 1. Cuts 22 and 21 are formed in the sides of the body 11 to intersect the sets of holes 12-15 and 16-19 respectively, and terminal leads 24, 23 are attached conductively therein to the electrodes constituted by the conductive material within the holes. In another embodiment, Fig. 2 (not shown), alternate holes are divided longitudinally to comprise two electrodes each. Apparatus for constructing the ceramic body, Fig. 3, comprises a tank 51 partitioned longitudinally at 55 and having mercury 86 on either side of, and beneath, the partition so as to support, on respective sides thereof, a coagulating agent 87, comprising a 10-15% aqueous solution of NH 4 B  5 O 8 ; and an aqueous dispersion 88 of the ceramic raw material. A motor 82 draws paper strips 57, 58, 59 in turn through the coagulating agent, the mercury, and the ceramic raw material, and an elongated non-composite body 90 is thus formed which is partly dried by heat lamps 89. The body is then fired, the paper strips thus being destroyed to leave the required parallel holes which are filled with a suspension of carbon or silver by capillary action assisted by the creation of a pressure difference between the ends of the holes. The conductive material is then dried in an oven. The ceramic body may be cut into suitable lengths before or after firing; in the latter case the body may be passed directly from the tank 51 into a continuous furnace. Specification 663,424, [Group XL (b)], is referred to.
Patent GB-1262571-A (GB)
Title: Process for the continuous production of pure concentrated hydrofluoric acid from impure fluosilicic acid
Inventor: BLOCHL WALTER
IPC: C01B7/19
Filed: 1969-02-15
Abstract: 1,262,571. Hydrofluoric acid. BUSS A.G. 15 Feb., 1969, No. 8322/69. Heading C1A. Hydrogen fluoride is recovered from hydrofluosilicic acid by (a) mixing therewith (in 2) water and silicon tetrafluoride recycled from (c) (through line 3), (b) thermally hydrolysing the mixture (in 4) to give water vapour, HF vapour, gaseous SiF 4  and by-product Si(OH) 4 , (c) superheating the vapours (in 11) and before the SiF 4  and water recombine, contacting them countercurrently (in 13) with a hot absorbent selective for HF, (d) externally heating the absorption zone (13), (e) contacting the HF- loaded absorbent with liquid HF-water azeotrope (introduced from line 15 into 14) whereby the water boils off and (f) stripping HF from the loaded absorbent (in 17) and recycling said absorbent (through line 18). Stripping may be effected by countercurrently contacting the loaded absorbent with a vapour phase stripping solvent (27) or by means of a subatmospheric pressure. As shown in the Figure, to which the numerals relate, the HF-loaded stripping solvent is passed to heat exchanger 20 and by means of further cooling in the sump, solvent 33 and HF containing minor amounts of water separate into layers. The solvent is recycled via evaporator 34 and the HF rectified in column 21 to give anhydrous vapours, which are condensed at 26, and azeotrope 23 for recycling to 14. Specified absorbents are polyethers, polyalcohols and/or polyglycols if desired together with diphenyl oxide or naphthalene. Specified solvents are water vapour mixed with heptane or nonane. Canadian Specification 713,982 is referred to.
Patent GB-347824-A (GB)
Title: Improvements in or relating to means for controlling electric motors
IPC: H02P1/04
Filed: 1930-03-15
Abstract: 347,824. Master control of motors ; electromagnetic switches. C L A R K E, CHAPMAN, & CO., Ltd. and READ, A., Victoria Works, Gateshead-on-Tyne. March 15, 1930, No. 8406. [Classes 38 (iii) and 38 (v).] The closing of a series of sequential contactors, the holding coil circuits of which are independently completed by a master controller, is suitably delayed by an arrangement of resistances having a large positive temperature co-efficient. In one form of the invention, when a controller 7 is moved to its first position, a contactor 1 closes, to connect the motor 15 across the mains with a resistance 17 in its armature circuit. In closing, the contactor 1 closes a switch 9, and a resistance 13 being cold, a large current flows through a lock-out coil 11 of the next contactor 2. The resistance 13 is heated by the current, and its resistance rises, so that after a time the current through the coil 11 is sufficiently reduced to allow the contactor 2 to close, if the controller 7 is moved to its second position. The remaining contactors are controlled in a similar manner. A series coil may be used to assist the lock-out coil. In a modification, no lock-out coil is used, and the special resistance is placed in shunt with the holding coil of the contactor.
Patent GB-139054-A (GB)
Title: Improvements relating to the means for raising and lowering the shares or tines of ploughs and other agricultural implements
IPC: A01B63/16
Filed: 1919-04-04
Abstract: 139,054. Ransomes, Sims, & Jefferies, and Tunnard, H. April 4, 1919. Rakes, horse.-A rake or like agricultural implement comprises a frame 1 supported on land and furrow wheels 3, 5 carried upon cranked axles, the axle of the land wheel being provided with an arm 6 carrying a stud 7 engaging in a bayonet socket slot in a link 8 freely pivoted on a bracket 10. After the cranked axles have been turned to raise the implements, the studs 7 enters the recess in the slot and locks the tools in the raised position. A tripping-arm 11 operated by a hand-lever 14 frees the stud from the recess when it is desired to lower the tools. The depth of working is controlled by a bell-crank-lever 17 provided with a locking quadrant 19 and connected to the arm 6 by a rod 15 passing through a collar fixed on the short arm of lever 17 and provided with a stop 16. To adjust the land and furrow wheel relatively to each other arms 20, 21 projecting from their cranked axles are connected by screwed rods 22 fitting into a right and left handed screw-threaded barrel 23. To raise the tools a trigger 24 carried by the crank arm of the land wheel axle is pulled by a string 25 to engage projections 26 on the wheel. The cranked arm and the wheel are then locked together and rotate until the trigger is freed by engaging a cam 27.
Patent GB-1000773-A (GB)
Title: Extracting Fluids from Solids by Means of a Press and Cage Assembly
Inventor: HILLER STANLEY
IPC: B30B9/26
Filed: 1963-03-04
Abstract: 1,000,773. Juice extracting. COPRODUCTS CORPORATION. March 4, 1963, No. 8559/63. Heading A4C. [Also in Division B1] In a method for extracting fluid, such as juice, oil or fat, from fluid bearing material, such as fruit, coconut meat, soya beans, fish, animal meat and cotton seeds, the material is moved along and subjected to pressure in a passageway having fluid flow passages through the wall thereof, and the movement of the material is subjected to a partial and increasing blocking provided by projections directed inwardly from the wall of the passageway which projections progressively increase in number towards the discharge end of the passageway, whereby pressure on the material in the passageway is maintained as the juice &c. is extracted. A press comprises a feeder section 3 and a pressure section 4 having aligned bores 46, 45 providing the passageway and having a hollow conveyer screw 17 with a discontinuous flight 62-70. The feeder section 3 comprises two separable grid body portions made up of arcuate ribs 9, longitudinal flanges 7, and a plurality of longitudinal grid bars 26, 32 separated by spacers 29 to define longitudinal discharge slots P for extracted fruit juice &c., the pressure section 4 being similarly constructed but having its flanges 8 arranged vertically. Fruit &c. introduced through a hopper 6 is fed by the conveyer screw 17 through a reducing diameter section 49 of the feeder section 3 into the uniform bore 45 of the pressure section 4 wherein the grid bars are provided with projections 31 extending inwardly between screw flights 65-70 which projections 31 increase progressively in number towards the discharge end 59 of the press and serve to resist rotation of the conveyed fruit and also to provide increased restriction to the passage of the fruit. Various forms of grid bar and spacers therefor are described in which the spacers 29 may be integral with the grid bar 26 or in which the spacers may comprise balls 82, 83 (Fig. 16) seated in recesses 84 provided in the grid bars 81. The hollow screw shaft 17 is filled with replaceable liquid coolant and includes means such as a rollable rod 76 or balls serving to prevent build up of deposits in the bore 75 of the shaft 17. Means are provided for adjustably anchoring the grid bars together and for securing them together in an assembly to facilitate transport.
Patent GB-714733-A (GB)
Title: Improvements in spine straightening apparatus
IPC: A61F5/02
Filed: 1952-04-03
Abstract: 714,733. Spinal supports. BIDOU, R. April 3, 1952 [April 3, 1951], No. 8565/52. Class 81(2) Spine straightening apparatus comprises a front abdomen contacting section 1, a back section 2, 3 adapted to contact the sacral and dorsal zones leaving an exposed zone between the fifth lumbar and seventh dorsal vertabrae, a resiliently flexible belt a attached to the back section 2, 3 and having downwardly sloping front portions to support the front section 1 and tend to lift it in a backward and upward direction. The back section is formed from a dorsal section 3 and a sacral section 2 pivotally connected to strips b<SP>1</SP>, b<SP>2</SP>. The belt a, attached to the strips b', b<SP>2</SP>, has side portions d<SP>1</SP> which slope downwardly towards the front section 1 to which it is attached by hooks g<SP>1</SP>, g<SP>2</SP>, the belt being arranged so that it does not contact the body. The front and back sections 1, 2, 3 are stamped from polyvinyl chloride which may be reinforced with glass or alternatively may be made from other material which is fireproof, acid-proof, washable and able to withstand the stresses to which, it will be subjected during wear.
Patent GB-141889-A (GB)
Title: Improvements in pumping plant
IPC: F04D13/16
Filed: 1919-04-07
Abstract: 141,889. Adams, C. H. April 7, 1919. Starting, facilitating.-A centrifugal pump provided with a reservoir in the suction, which always remains full of water so that the pump always remains primed, is also provided with a non-return valve in the suction or delivery. The pump a is provided with an upwardly-extending delivery pipe g and a reservoir c in the suction to maintain the pump primed, and a non-return valve b is provided. A flush-pipe h may be provided to clear sediment from the floor of the well e from which liquid is pumped. A screen may be interposed in the receptacle c to stop solid matter from entering the pump.
Patent GB-489122-A (GB)
Title: Improvements in cop winding machines
IPC: B65H54/14
Filed: 1937-03-24
Abstract: 489,122. Counting-apparatus. REINERS, W., (trading as SCHLAFHORST & CO., W.). March 24, 1937, No. 8688. Convention date, May 14, 1936. Addition to 416,260, [Group IX]. [Class 106 (i)] [Also in Group IX] A counting-apparatus 144 for stopping the spindles of a yarn-winding machine after a predetermined number of revolutions comprises a counting train, the individual wheels of which may be severally set by the use of a key, each wheel being actuated through individual gearing so that the predetermined member is set up in the counter. The counter is driven by a chain drive 140, 141, 142 from the spindles and counts backwards and on reaching zero actuates a detent 77a which releases a rod 118 connected to the lever 79 controlling the spindle clutch &c. The previously determined figure is again set up in the counter by pressure on a resetting lever 145.
Patent GB-1000428-A (GB)
Title: Absorbent product
IPC: A61F13/20
Filed: 1963-03-05
Abstract: An absorbent fibrous body for use in catamenial pads and tampars, bandages and dental packs and for acidifying body fluids includes multicomponent fibres, one component being a polymer having textile-fibre-forming properties and the other being an acidifying polymer having cation exchange properties, the components being in micellar association.  Viscose and 15-40% by weight of carboxymethyl cellulose, or sodium salt thereof, are mixed by homogenising or stirring and spun into a coagulating and regenerating bath.  The resulting fibres are passed through acid having a pH less than 2.5, e.g. 2% sulphuric acid, to impart cation exchange properties to the carboxymethyl cellulose.  After washing the fibres are squeezed, immersed in ethyl or isopropyl alcohol, which replaces the remaining water, and dried.  The fibres may be crimped, stretched or plied. They may be blended with cotton, cellulose acetate or nylon.  Covers, cores and withdrawal cords of catamenial pads or tampons are made from the fibres.  The textile-fibre-forming polymer may alternatively be selected from hydroxyethyl cellulose, cellulose acetate, polyethylene oxide or water-soluble derivatives of polyvinyl alcohol. The acidifying polymer may alternatively be selected from polyacrylic acid, polymethacrylic acid, polymers or copolymers of maleic acid, itaconic acid, or alginic acid, or succinate, nitrate, maleate or phthalate of cellulose.
Patent GB-1414955-A (GB)
Title: Preparation and distribution of animal feedstuffs
IPC: A01K5/02
Filed: 1971-03-31
Abstract: 1414955 Animal feed distribution N J FROMENT P G BILLING and W MYHAL 27 June 1972 [31 March 1971] 8745/71 Heading AIM [Also in Division B1] Pig meal and water (or whey) are mixed in a tank 1 by an agitator 2. The meal is fed from a hopper 3 by an auger 4 driven by a variable speed motor 5. Water is drawn from a cistern 7 by a pump 8 and delivered via a shower rose 12. The mixture is distributed by a pump 13 via feed pipes 14, controlled by return valves 15, and via conduits 16, controlled by valves 17, to individual pens. The valves are operated by an air unit 18 controlled by remote panels 19 connected to a central control unit 20. The tank 1 also contains a liquid level detector comprising an open tube 21 enclosing magnetic floats 24, 25, 26 on a rod 22 in which reed switches 23 are embedded. Operation. At feeding time, which is determined by a time switch, a master timer in the central control unit 20 is activated. The air compressor 18 is then activated and when the working pressure pre-set on pressure switch 27 is reached the valves 15 are opened and pump 13 activated to scavenge the pipes 14 for a pre-set time. After a specific period the first remote panel 19 is activated and this checks the positions of pairs of rotary switches related to each pen and when a non-zero setting is found the water pump 8 and auger motor 5 are started. The level in the tank 1 rises lifting float 25 to switch 23<SP>3</SP> when feed valve 17 of the appropriate pen is opened and the corresponding return valve 15 closed. When a stepping switch controlled by the master timer reaches the position set by the rotary switch it signals the central control unit 20 to stop motor 5 and pump 8, and the level in the tank falls until float 25 is between switches 23<SP>2</SP> and 23<SP>3</SP> when the valve 17 is closed and valve 15 opened. The operation is then repeated for the next pen and when all the pens in a group have been dealt with the process is repeated with the next group, and when all the groups have been dealt with the master timer is switched off. A further time switch may be provided to operate pump 13 periodically to prevent clogging. Alarms are triggered, in the event of the liquid level being too low or too high by float 26 and switch 23<SP>1</SP> or float 24 and switch 23<SP>4</SP> respectively, if there is an excessive delay in reaching the required air pressure or liquid level, or if the auger motor current drops due to lack of meal in hopper 3.
Patent GB-526890-A (GB)
Title: Apparatus for forming nodules and the like
IPC: B30B11/20
Filed: 1939-03-21
Abstract: 526,890. Moulding pellets in extrusion machines. THOMPSON, J. H., and SPROUT, WALDRON & CO. March 21, 1939, No. 8958. [Class 87 (ii)] A machine for moulding pellets, nodules &c. comprises a rotary cylindrical die 33, with apertures 35 and rollers 38, 39, 40 which successively press material supplied to the cylinder against the inner surface and force it through the apertures so that the moulded bodies can be removed by a scraper 61. The cylinder 33 is fixed to a carrier 20 which has roller bearings 18, 19 on a fixed sleeve 14 and is rotated by means of a sprocket 41. The rollers 38, 39, 40 have the form of truncated cones and are mounted with roller bearings on pins 58 screwed into a spider 53 fixed on the reduced end 52 of a tapered spindle 49 wedged into an eccentric bore of the sleeve 14. With this mounting the three rollers can be adjusted together circumferentially relatively to the die 33, without altering their respective distances from the inner surface of the die. The latter can be adjusted by turning the spindle 49 within the eccentric bore of the sleeve. The material under treatment is supplied through a hopper 36 at the side. A form of apparatus is described in which the sleeve 14 rotates as well as the die, so that the rollers move round relatively to the die. If the sleeve is driven the die may be rotated by friction due to the rollers.