baber/WOPTO huggingface dataset:
Patent GB-1179517-A (GB)
Title: Non-Gyrating Fin Stabilised Projectile
IPC: F42B30/10
Filed: 1968-02-12
Abstract: 1,179,517. Projectiles. OY TAMPELLA AB. 12 Feb., 1968 [8 March, 1967], No. 6758/68. Heading P3A. Fin stabilized projectile 2, particularly a mortar bomb, is provided in the region 13 of its maximum diameter with circumferential grooves 8 which are undercut towards the nose of the projectile. The grooves may be of different depths and the grooves formed forwardly of the maximum diameter may be shallower than those behind. The grooves formed rearwardly of the mximum diameter may extend half-way along the rear part of the projectile. On firing the projectile from a barrel, the propelling gases from a cartridge (not shown) in the tail unit 4 are, more or less, trapped by the grooves 8 and converted into eddy currents which prevent passage of the following gases. The increased gas pressure over the rear half of the projectile reduces or eliminates the knocking action of the projectile in the barrel.
Patent GB-728812-A (GB)
Title: Process for protecting heat resistant metal parts against damage at high temperatures
IPC: C10L1/10
Filed: 1951-03-21
Abstract: 728,812. Preventing furnace corrosion; composition fuel. AKT.-GES. FœR TECHNISCHE STUDIEN. March 21, 1951 [March 28, 1950], No. 6760/51. Classes 50 and 51 (1). A process for reducing furnace corrosion, at temperatures above 630‹ C. by combustion products, is characterized by the introduction into the combustion zone of an "auxiliary substance" which prevents attack of the protective scale formed on metal parts. The substance may include an oxide; silicon or a silicon compound; a carbide; aluminium or an aluminium compound; iron or other metallic powder; zirconium oxide; ferro-silicon powder; borium, iron or magnesium carbonate; aluminium acetate; a carbonate or organic compound of a metal.
Patent GB-1195356-A (GB)
Title: Liquid Fuel Injection Nozzles
IPC: F02M61/16
Filed: 1969-02-07
Abstract: 1,195,356. Burners. PARKER-HANNIFIN CORP. 7 Feb., 1969 [1 March, 1968], No. 6764/69. Heading F4T. A fuel injection nozzle comprises a spin chamber 10, Fig. 1, into which liquid fuel is introduced through a tangential inlet opening 14 to impart a spinning motion to the liquid and from which liquid is discharged from an orifice 15 in the form of a hollow conical spray, wherein a radially inwardly-open annular groove 9 is provided in the wall of the spin chamber between the orifice and the inlet opening to trap therein contaminants from the liquid. Fuel from a spray bar 4 passes via passage 6, cross-bore 12, annular space 13 and tangential inlets 14 into spin chamber 10 and whilst spinning flows axially towards orifice 15, solid contaminants being centrifuged into groove 9. In further embodiments the groove is formed in adjacent pairs of rings (17), Fig. 3 (not shown) or (19, 20), Fig. 4 (not shown) or is integral with the spin chamber (10), Fig. 5 (not shown). The grooves may be an erosionresistant material, e.g. tungsten carbide, chromium carbide or a flame-sprayed coating.
Patent GB-893382-A (GB)
Title: Improvements in or relating to hydraulic power transmissions
IPC: B23Q5/26
Filed: 1960-02-26
Abstract: 893,382. Hydraulic apparatus. VICKERS Inc. Feb. 26, 1960 [March 2, 1959], No. 6767/60. Class 69 (2). An hydraulic power transmission comprises a pair of pumps 10, 12 connected in parallel with a load 46, 64, a separate by-pass valve 88, 106 for each pump, a pair of pressure chambers 98, 100, 116, 124 associated with each valve so as to impose forces in the directions closing the valves, and a vent line 132 connecting a separate pressureresponsive valve 134, 162 to one chamber of each by-pass valve. The pumps 10, 12 which are of different capacity and may be driven by an electric motor, are connected by conduits 22, 24 and the by-pass valves 88, 106 to a delivery conduit 26 leading to manually-operated directional valves 30, 36 controlling motors 46, 64 which may drive the carriages of a machine tool such as a multiple drill. The lines 44, 62 between the valves 30, 36 and motors 46, 64 are provided with throttle valves 70, 76, which may be of the type described in U.S.A. Specification 1,982,711, and by-pass valves 72, 78. The by-pass valve 106 is connected by the vent line 132 to the vent valve 162 which, in turn, is connected by the line 132 to the normally-closed pressure-responsive valve 134. With the handle of the valve 30 in the neutral position, movement of the handle of the valve 36 to the left together with the opening of the by-pass valve 78 permits the output from both pumps 10, 12 to be supplied to the motor 64 to effect rapid traversing thereof, both by-pass valves 88, 106 remaining closed. When the handle of valve 36 is moved to the right and the by-pass valve 78 is closed to effect a slow feed of the motor 64, the flow of fluid through line 62 passes through the throttle valve 76, the resistance of which increases the pressure in the delivery line 26. The increase in pressure acts in a line 154 and chamber 98 of the by-pass valve 88 to move a spool 92 to the left, displacing fluid from a chamber 100 to the vent line 132 and through the valve 134 to an exhaust line 54, the movement of the spool connecting the delivery line 24 of the large displacement pump 10 to an exhaust line 105. The delivery of the small displacement pump 12 still exceeds the requirements of the motor 64 so that the pressure in the line 26 continues to rise, the increase in pressure being transmitted through line 22, chamber 116, passage 126, chamber 124 and passage 138 in the by-pass valve 106, and line 132 to the valve 162 to move its spool 170 against a spring 172 and connect the pressure in line 26 to the valve 134 which is then maintained open to pass the fluid to the exhaust line 54. The flow of fluid causes a pressure drop across the passage 126 and a pressure differential to occur in the chambers 116, 124 of the by-pass valve 106 of a valve sufficient to move the spool 118 against a spring 130 and open a port 129 to by-pass fluid from the pump 12 in excess of the requirements of the motor 64 to an exhaust line 114. U.S.A. Specification 2,728,194 also is referred to.
Patent GB-869501-A (GB)
Title: Chemically modified starch product and process of producing same
IPC: C08B31/00
Filed: 1960-02-26
Abstract: Graft copolymers are produced by reacting a granular unpasted amylaceous material with an ethylenically unsaturated monomer in the presence of an oxidizing polymerization catalyst.  Amylaceous materials specified are corn, tapioca, rice, potato and wheat starches, potato amylose and amylopectin, oxidized starch, acid-modified starch, ethylene oxide-modified starch, vinyl acetate-modified starch, starch maleate and methacrylate and dextrins.  Monomers specified are styrene, vinyl toluene, chlorostyrene, acrylic and methacrylic acids and their methyl, ethyl and butyl esters, diethylaminoethyl methacrylate, acrylamide, acrylonitrile, vinyl and vinylidene chlorides, vinyl acetate, allylidene diacetate, vinyl pyridines, pyrrolidone, lutidine, picoline and pyrrole, vinyl ketones, butadiene, isoprene and chlorobutadiene.  Catalysts specified are hydrogen peroxide, cumene diisopropyl benzene, p-menthane and tert.-butyl hydroperoxides, potassium persulphate, dicumyl peroxide, benzoyl peroxide, sodium hypochlorite, potassium permanganate and ceric salts, the action of which may be activated by the use of a reducing agent such as ferrous sulphate, sodium formaldehyde sulphoxylate, sodium bisulphite and metabisulphite and ascorbic acid.  The reaction is preferably carried out in an aqueous medium.  When the amylaceous material contains unsaturated groups, e.g. in the case of starch methacrylate or maleate, some copolymerization between the starch and the monomer appears to occur.  Depending upon the nature of the grafted monomer, the products may be used as moulding materials, sizes, flocculating agents and binders in paper making.
Patent GB-1195623-A (GB)
Title: Improvements in or relating to Lint-Free Medical Applicators
Inventor: KANBAR MAURICE SHAMA
IPC: A61F13/44
Filed: 1968-02-12
Abstract: 1,195,623. Surgical swabs &c. M. S. KINBAR and R. D. SUDARSKY. 12 Feb., 1968. No. 6835/68. Heading A5R. [Also in Division D1] A lint-free medical applicator comprises a tow of texturised continuous multifilament synthetic yarns wound into a mass having highly adsorbent properties, the yarns forming the tow being individually false-twisted, and the false-twisted yarns being interentangled in the tow. The filaments may be composed of a polyamide or polyester or a vinylic or acrylic polymer. A pigmentary material, e.g. titanium oxide may be incorporated in the yarns to render the same radiologically opaque. The tow may be wound about a stick to form a swab; about a removable mandrel to form a ball; or wound into a mass and ensheathed in a fabric envelope to form a shaped dressing.
Patent GB-725001-A (GB)
Title: A veterinary instrument for use in abstracting an obstruction or foreign body from the throat of an animal
IPC: A61D1/12
Filed: 1953-03-12
Abstract: 725,001. Holding and picking-up tools. MACGUINNESS, T. P. H. March 12, 1953 [May 16, 1952], No. 6840/53. Class 61 [Also in Group VI] An instrument primarily for gripping and extracting obstructions from the throats of animals comprises a tubular handle carrying gripping fingers at one end and operating means at the other. The tubular handle member 20, part of which 24 may be flexible, encloses a cable 16 and carries, at one end, a cylindrical head 29 which surrounds a block 32 secured to the cable 16. A plurality of fingers 36 are pivoted to both the tube 29 and block 32 so that relative longitudinal movement between these causes opening or closing of the fingers. The opposite end of the cable carries a block 9 which is capable of axial movement in a sleeve 3,.rotational movement being prevented by a screw 13 engaging a slot 14 in the block. The inner surface of the sleeve 3 is threaded for engagement with a member 6 which is rotated by a handle 1 and which communicates its resultant longitudinal movement to the block 9 by means of a key 10. Thus, when the handle 1 is turned, the axial movement of the cable 16 causes corresponding opening or closing of the jaws 36. In order to prevent damage to the throat, the jaws 36 are enclosed in a rubber sheath 42. In a modified type of jaw, see Fig. 7 (not shown), the tip is made adjustable so that it can be set as desired before the instrument is used.
Patent GB-704606-A (GB)
Title: Improvements in fuel economisers using electric sparks for petrol engines and the like
IPC: F02C3/30
Filed: 1950-03-20
Abstract: 704,606. Jet propulsion plant. DEVAUX, R March 20, 1950 [March 22, 1949; May 13, 1949], No. 6918/50. Drawings to Specification. Class 110 (3). [Also in Groups XXVII and XL(a)] In a jet propulsion engine water is injected into the intake of the engine, for disassociation by means of electric sparks (see Group XL(a)) into hydrogen and oxygen. A small quantity of ozone may simultaneously be produced. A portion of the air entering the engine is led past an atomizer jet for injecting the water and the spark gap comprises a rotating electrode formed by an airscrew driven by the gas stream so that the number of electric sparks is proportional to the air flow to the engine.
Patent GB-295912-A (GB)
Title: Improvements in and relating to splitting machines for textile fabrics
IPC: D06H7/04
Filed: 1928-03-06
Abstract: 295,912. Morrell, A., and Aykroyd, H. E. March 6, 1928. Stationary-cutter machines. -A device for splitting fabric woven with a weftless portion has a knife K mounted on a carriage supported by antifriction bearings C' on fixed guides C<2>, C<3>. Thrust rollers C<4> are fitted. The fabric is drawn under tension past the knife K and the split portions are separated by a guide G. In a modification the web is cut after passing over a laterally movable guide roller. Reference has been directed by the Comptroller to Specification 300,354.
Patent GB-376322-A (GB)
Title: Improvements in or relating to the manufacture of dextrins, sugars and other products from cellulosic materials
IPC: C13K1/02
Filed: 1931-03-07
Abstract: Cellulose or cellulosic materials are transformed to conversion products by treatment with volatile acids such as hydrochloric acid in the presence of organic diluents and especially organic diluents which are insoluble or substantially insoluble in water.  The primary conversion products are subjected to separate and further hydrolysis after removal of the diluent to produce dextrins &c.  Suitable organic diluents include benzol, petroleum ether, ether and methylene chloride.  The cellulose may be impregnated with the diluent or with water or dilute hydrochloric acid and then with the diluent and hydrogen chloride is then passed into or through the materials until the desired conversion is attained.  The hydrogen chloride may be mixed with vapours of the organic diluents or with an inert gas such as nitrogen or carbon dioxide, or with water vapour.  The acid is removed at the end by washing with water or acetone. Specifications 376,323 and 376,372, [Group VI], are referred to.ALSO:Cellulose or cellulosic materials are transformed to conversion products by treatment with volatile acids such as hydrochloric acid in the presence of organic diluents and especially organic diluents which are insoluble or substantially insoluble in water.  The primary conversion products are subjected to separate and further hydrolysis after removal of the diluent to produce dextrins, sugars, &c. Suitable organic diluents include benzol, petroleum ether, ether, and methylene chloride.  The cellulose may be impregnated with the diluent or with water or dilute hydrochloric acid and then with the diluent and hydrogen chloride is then passed into or through the materials until the desired conversion is attained.  The hydrogen chloride may be mixed with vapours of the organic diluents or with an inert gas such as nitrogen or carbon dioxide, or with water vapour. The acid is removed at the end by washing with water or acetone. Specifications 376,323 and 376,372 are referred to.
Patent GB-579872-A (GB)
Title: Improvements in electric wave communication systems
IPC: H04K3/00
Filed: 1944-04-19
Abstract: 579,872. Wireless signalling. STANDARD TELEPHONES & CABLES, Ltd. April 19, 1944, No. 7291. Convention date, April 27,1943. [Class 40 (v)] An electric wave communication system comprises a communication set, a control transmitter for transmitting a series of control pulses at instants separated by predetermined time intervals on a carrier wave having. a specified frequency, means at the said set for receiving and detecting the said control pulses, and means responsive to the detected pulses for tuning the said set to each of a plurality of given frequencies in turn in a predetermined order, all of said frequencies being different from the said specified frequency. Fig. 1 shows the arrangement at a transmitter 9 for generating control pulses for varying simultaneously the operating frequency of two intercommunicating transmitterreceivers 10, 11. The control pulses are sent by periodically closing at 19 the cathode circuit of oscillator valve 13 by means of a relay 20 controlled by a number of contacts 22, 23 on a disc 21 rotated by a motor 26. At the end of each series of pulses, a broad contact 23 on disc 21 closes contact 19 for a prolonged period. At the same time a contact 25 on a second disc 24 closes the circuit at 29 of a gas discharge tube 28 operating into a condenser resistance combination 18, 31 to produce a long series of rapid pulses. These pulses are fed through resistance 17 to modulate the grid of oscillator 13 and produce a series of control pulses which bring all the sets 10, 11 back to the datum condition, thus ensuring that they are synchronised. Fig. 3 shows the arrangement at one of the communication sets 40 having a normal aerial 41. A separate receiver 42 is tuned to receive the control pulses which are detected at 42a and, after shaping at 43 ... 46, are applied through condenser 48 to a delay network 50 ... 57, connected as shown to the grids of gas discharge tubes 58 ... 61 controlling relays 68 ... 71. Only tube 58 is connected to the high tension source-thus the first pulse operates tube 58 alone to energize relay 68 to close switch 62 and connect condenser 63 to alter the tuning. Since tube 58 is now ionised, tube 59 is connected to the high-tension and so the next pulse operates tube 59 and hence switches in condenser 65. Similarly the third pulse switches in condenser 67 and the fourth pulse energizes tube 61 to open contacts 72 to disable all the tubes. This cycle is repeated continuously to tune all the sets simultaneously through a series of frequencies. A series of synchronising pulses follows each cycle and owing to delay network 56, 57 operates to fire all the tubes 58 ... 61 at the same time, thus ensuring that all the sets start the cycle at the same stage. The tubes 58 ... 61 may be replaced by electromagnetic relays, Fig. 5 (not shown).
Patent GB-875591-A (GB)
Title: Improvements in or relating to electric-arc longitudinal seam welding of metal tubesor electric cable sheaths
Inventor: DONELAN JAMES ARTHUR
IPC: B21C37/08
Filed: 1958-03-07
Abstract: 875,591. Welding by fusion; skelping. PIRELLI-GENERAL CABLE WORKS Ltd. May 15, 1959 [March 7, 1958], No. 7379/58. Class 83(4). In arc welding the longitudinal seam of a tube or a cable sheath formed by bending transversely a strip of metal, an external pressure pad having a part cylindrical surface overlaps and engages the margins of the tube or sheath to maintain the cylindrical form of the tube or sheath during welding. The tube 1 is passed by rollers between adjustable phosphor bronze die members 3a, 3b on which is bolted a cover 4 apertured to receive the gas nozzle 8 surrounding the tungsten electrode 9 of an arc welding torch. The external pressure pad 10 located in a recess between the die members 3a, 3b is pressed against the tube by a bolt 11 threaded through the cover 4. An internal support 18 grooved to receive the underhead of the weld is rigidly mounted on a fixed support, 15 and carries a projection 19 which aligns the seam with the electrode 9. The pad 10 may extend beyond the welding position and have an aperture to receive the electrode. In a modification, the pad 10 is mounted on a leaf spring and the die members are supplemented or replaced by rolls. In a further modification for welding cable sheaths the support 18 is of cylindrical form and surrounds the cable core to protect the latter from the welding heat. Specifications 722,707 and 797,363 are referred to.
Patent GB-844289-A (GB)
Title: Pimaricin and process of producing same
IPC: C12P19/62
Filed: 1957-03-06
Abstract: <PICT:0844289/IV(b)/1> A new antibiotic pimaricin is produced by propagating streptomyces natalensis NRRL 2651 Nov spec, or a mutant thereof, in an aqueous nutrient medium containing a source of carbon, nitrogen and mineral salts under aerobic and preferably submerged conditions. The temperature is 15 to 30 DEG C, and preferably 26 to 28 DEG C., the duration of cultivation 2 to 5 days but may be up to 14 days and the pH is maintained at 6,5 to 8,0 preferably by means of a calcium carbonate buffer.  Specified sources of carbon are glucose, saccharose, lactose, starch, glycerol and vegetable and animal fatty oils such as soy oil and fish oil.  Specified sources of nitrogen are hydrolysed or non-hydrolysed casein, corn steep liquor, peptone, extract of meat, soybean meal, peanut meal, fish meal, yeast-extract, distillers solubles, fish solubles and nitrates.  Mineral salts are potassium chloride, sodium, chloride, sodium sulphate, magnesium sulphate, and phosphates of sodium or potassium.  Pimaricin is recovered from the broth by adjusting to a pH of about 10, recovering the solids, if desired with the use of a filter aid, and (a) extracting the clarified broth at pH 3 to 10 with a partially water-miscible organic solvent such as n-butanol, and (b) if desired, extracting the mycelium with methanol containing 1 to 3% calcium chloride.  The crude pimaricin is further purified by selective precipitation from glacial acetic acid, pyridine or dimethyl formamide by adding a non-solvent such as water, ether or petroleum ether.  The crude is dissolved in the solvent any residue being filtered off, and the pimaricin precipitated by the addition of water.  The sodium salt is obtained by dissolving pimaricin in methanol and adding thereto sodium hydroxide dissolved in a small amount of water.  Pimaricin has activity against saprophytic and parasitic fungi and yeasts; it is a white crystalline amphoteric, solid decomposing at about 150 DEG C., having a specific rotation [a ]D 25 = + 250 DEG ; molecular weight 727, empirical formula C33H50 NO14, contains C=57,77%, H=7,27%, N= 1,95% and O=33,01; is only slightly soluble in water, more soluble in alcohols, soluble in pyridine, dimethyl formamide, dimethylacetamide, glacial acetic acid, alkali hydroxide, insoluble in aliphatic hydrocarbons such as pentane, hexane and cyclohexane; stable in aqueous solution at pH7,0; decolorises bromine water; gives a blue and olive-green with cone hydrochloric and sulphuric acids respectively; ultra violet absorption spectrum shows maxima at 290, 304 and 318 mm ; infra red absorption (in cm-1) at 3460, 2985, 1721, 1637, 1577, 1441, 1401, 1381, 1275, 1269, 1238, 1192, 1176, 1136, 1109, 1066, 1006, 988, 948, 887, 855, 844, 803 and 794.ALSO:Aqueous solutions of the antibiotic pimaricin (see Group IV(b)) in a concentration of 75 p.p.m. is fungicidal but non-toxic to growing plants and germinating seeds. Aqueous suspensions have low toxicity to rats and mice.  Pimaricin has activity against saprophytic and parasitic fungi and yeasts.
Patent GB-350475-A (GB)
Title: Air brakes for aeroplanes
IPC: B64C9/32
Filed: 1930-03-06
Abstract: 350,475. Air brakes for aeroplanes. GRAY, W. E., 8A, Bank Parade, Edgware, Middlesex. March 6, 1930, No. 7408. [Class 4.] An aeroplane which is provided with one or more parachutes which can be released to act as air brakes has one parachute 4, Fig. 2, attached by two separate means, the normal one 5 which operates when the parachute is expanded, and a second one 6 which attaches the parachute to the aeroplane in an unexpanded state. Means are provided for successively increasing the lengths of the lines 5, 6 thus rendering the parachute alternately operative and inoperative. A small parachute may be provided to reduce the rate of descent and may be arranged to draw a larger one from its container to reduce the landing run, a third parachute 10, Fig. 2, may be employed to keep the " inoperative " line 6 in tension. Parachute 4 is housed in the wing, Fig. 1, in a recess normally closed by a panel 2. The attaching lines 5, 6 are secured to the lengthening mechanism 7 disposed on the centre line of the machine. The cables 5, 6 are attached to a fitting 11, Figs. 3 and 4, by pins 12, 19 respectively. Withdrawal of these pins by a hand-wheel 13 allows of extra coils of cable to be added in turn to each attaching line. The operative cable 5 may on final release withdraw a large parachute; where none is fitted the parachute is finally attached in the inoperative state. Hand-wheel 13 is fitted with a ratchet. According to modifications the parachutes may be housed in the rear of the fuselage or in the fin and the lengthening mechanism may be operable from a distance through cables.