baber/WOPTO huggingface dataset:
Patent GB-1007111-A (GB)
Title: Improved solid urea and method for the preparation thereof
Inventor: MARTEN JEROME HERBERT
IPC: C05C9/00
Filed: 1962-12-17
Abstract: A process for improving the properties of crude solid urea comprises mixing the solid urea with a liquid solvent which consists of an aliphatic ketone having no more than 5 carbon atoms per molecule, up to 5% by volume water, and dissolved urea, maintaining said urea in contact with said solvent, separating solid urea with improved properties from the liquid solvent, and heating to remove said solvent. The process is stated to reduce or eliminate the undesirable caking tendency and objectionable biuret content of crude solid urea. Examples are given.  Comparative examples describe similar treatments employing ethyl ether, ethyl acete, methyl acetate plus methanol, methanol, and mixed esters.
Patent GB-1516867-A (GB)
Title: Container for magnetic tape
IPC: G11B23/087
Filed: 1975-11-19
Abstract: 1516867 Magnetic tape container MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 19 Nov 1975 [21 Nov 1974 (3) 10 Dec 1974 (4)] 47648/75 Heading B8M Access to a tape T is restricted by a protective covering 30 disposed at an access opening of a cassette 10 or cartridge. The covering 30 is formed of wall portions 31, 32 spaced by a portion 33 and biased towards the access opening by springs 34, 35 so that the portions 31, 32 are flush with the front side 15 of the cassette 10, the arrangement being such that when the cassette 10 is inserted in a record/playback device the transducing head assembly, abuts the covering 30 and pushes it inwardly of the cassette 10 to allow co-operation of the tape T with the transducing heads 43 for recording or playback purposes. Pinch rollers 45a and 45b co-operate with capstans 19a and 19b at openings 18a, 18b on the cassette and grip the tape T for its translation from spool to spool. The cassette 10 includes braking device 23 which, in an operative position, engages the flanges of the spools 11 and 12 to prevent idle rotation of the spools when not in use, and which is displaced (see Fig. 5) by a pin on the playback device entering a slot of the cassette to allow rotation of the spools. The covering 30 may be of one piece construction The braking device 23 may be connected to or integrally formed with the covering 30 so that it can be disengaged from the spools 11, 12 and the covering 30 retracted simultaneously either by an actuating pin on the record playback device engaging a slot or by the transducing assembly pushing the covering 30 to its retracted position, Fig. 8 (not shown). In another embodiment a spring biased lever, provided on the playback device, abuts the portion 32 of the covering 30 as the cassette 10 is inserted into a cassette receiving chamber of the playback device to push in the covering 30 Fig. 9 (not shown). In another embodiment a manipulating knob (47) on the playback device controls movement of the pushers (41<SP>1</SP>) to push in the covering 30 independently of the movement of carrier plate (42<SP>1</SP>) which carries the transducing heads Fig. 10 (not shown).
Patent GB-1375198-A (GB)
Inventor: MERCIER J H
IPC: F16L55/052
Filed: 1971-10-13
Abstract: 1375198 Hydraulic accumulators J H MERCIER 13 Oct 1971 [28 Oct 1970] 47695/71 Heading F1D [Also in Divisions F2 and G3] An hydraulic transmitter or accumulator comprises a flow device 16 in the form of a hollow column for supporting a bladder 19 when the same collapses due to expulsion of fluid from the chamber 20 it encloses. The device 16 comprises a hollow cylindrical body 24 having orifices 27, the body 24 being surrounded by a permeable jacket 28 comprising a stack of annular discs 30 defining between them interstices 29 which are of such a size to permit flow through the wall of device 16 but to prevent damage to the bladder 19 when it engages the device 16 upon collapse.
Patent GB-970919-A (GB)
Title: Improvements in or relating to polyolefins of improved light stability and dye receptivity
IPC: C08K5/00
Filed: 1962-12-19
Abstract: Polyolefin compositions of improved light stability and dye receptivity comprise (1) a stereo regular polymer of an olefin of at least 3 carbon atoms, (2) a chromium complex Cr (ligand)mXn wherein X is an anion, m is 1 to 3 and n is 3 divided by the valency of said anion, and (3) a phenolic antioxidant. The compositions which may be formed with the aid of solvents such as benzene and hexane, are receptive to disperse-mordant dyestuffs. Optional ingredients are dilauryl thiodipropionate, dialkyl disulphides, zinc dialkyl dithiocarbamates and dithiophosphates, and calcium soaps. The compositions find application as film, fibre, filament, thread, yarn, cord and fabric.
Patent GB-1519606-A (GB)
Title: Manufacture of olefin polymers and catalyst for use therein
IPC: C08F10/00
Filed: 1975-11-21
Abstract: 1519606 Olefin polymerisation catalysts BASF AG 21 Nov 1975 [23 Nov 1974] 47946/75 Heading BIE [Also in Division C3] Catalysts are made by depositing chromium trioxide or a precursor therefor on a silica xerogel and calcining the composite at 400- 1100C, the xerogel having a particle size of 10-2,000Ám and having been made by decationizing a solution of a silicate, adding an aluminium salt to the solution of silicic acid which is formed, forming a gel, extracting water with a solvent and drying. The catalyst may be used in the production of polyethylene.
Patent GB-1108722-A (GB)
Title: A process for coating articles
Inventor: OOSTERHOF HENDRICUS ANTHONIUS
IPC: C08L67/04
Filed: 1966-10-26
Abstract: Articles e.g. steel or glass panels, are coated by heating the article to between 275 and 305 DEG C., and dipping into a fluidised bed of polypivalolactone particles after which the article having a layer of polypivalolactone adhering to its surface is removed. The particles may contain one or more heat stabilizers, nucleating agents, pigments, fillers and other additives, examples of which are given.  The term "polypivalolactone" is defined as meaning a thermoplastic resin which consists substantially of a linear polyester having recurring units of formula -O-CH2-C(CH3)2-C(O)- and may consist of a homo or copolymer of pivalolactone, or polymer blends thereof with for example polyamides, e.g. nylon, polyesters e.g. polyethylene terephthalate, polyvinyl chloride, polyvinyl butyral, polyepoxides, polyolefins e.g. polypropylene, or chlorinated polyether resins.  The fluidizing gas may be heated up to about 10 DEG C below the sintering point of the particles e.g. below about 190 DEG C for pivalolactone homopolymer.  The fluidizing gas may be a non-oxidizing gas e.g. nitrogen or carbon dioxide. The removed article is maintained at between 230 and 300 DEG C for a sufficient time to obtain a continuous well melted coating.  The polypivalolactone particle size may be substantially from 25 to 1000 microns.  The surface of the article may be cleaned and roughened e.g. by sand or metal grit blasting, acid-etching or solvent treatment, prior to coating and parts not to be coated may be masked with for example silicon resin.  The coating process may be repeated to build up a thicker coating upon the article.
Patent GB-1527951-A (GB)
Title: Reflector antenna with matched feed system
IPC: H01Q5/45
Filed: 1976-11-18
Abstract: 1527951 Aerials MARCONI CO Ltd 21 Oct 1977 [18 Nov 1976] 48030/76 Heading H4A A multi-band antenna having a reflector 4, which as shown is the sub-reflector of a cassegrain system, has means for cancelling reflections from the reflector 4 back into feed source 5. The reflector has in its surface annular grooves 6 and 7 which are coaxial, there being one groove for each frequency band. The grooves effect perturbations which are arranged so that for each frequency band the combined perturbations cancel out reflections towards the feed source from the main surface of the reflector. The grooves are preferably cosinusoidal in cross-section. The reflector surface may be formed with raised portions instead of grooves.
Patent GB-1516328-A (GB)
Title: Feeding apparatus
IPC: B65G65/42
Filed: 1975-11-24
Abstract: Using this automatic sorting device, a particular, counted-out quantity of disc-shaped articles, in particular crown tops, is to be delivered, in which case they are fed in such a way that undesirable shaking and the ensuing mutual scratching ("dusting") is avoided. The automatic sorting device consists of a feed funnel (A), a container (B), and a feed device (C) for feeding the disc-shaped articles to the container. A control device (D) controls the feed device in order to maintain the level of the disc-shaped articles. Assigned to the container (B) is a conveying device (E) for delivering the articles from the container. Furthermore, a delivery device (F) is provided in order to deliver the articles in an aligned row. For this purpose, a deflection part (120) is arranged in the container near to the entry to the delivery device (F) in order to maintain the emergence of the articles from the conveying device (E) into the delivery device (F) in a single row. <IMAGE>
Patent GB-1489628-A (GB)
Title: Drive devices for screw-type metering machines
IPC: B65B65/02
Filed: 1974-11-08
Abstract: 1489628 Clutch-brake combinations HESSER MASCHINENFABRIK AG 8 Nov 1974 [9 Nov 1973] 48365/74 Headings F2L F2G and F2E In an electromagnetically operated clutchbrake unit for a screw-type metering machine wherein a clutch-brake disc 5 is moved axially into frictional engagement with a driving clutch plate 2 or a stationary brake disc 3, cooling air 12 is supplied through a duct 14 to a chamber 10 from which it flows through the gap between the plate 5 and clutch plate 2 or brake disc 3 to effect cooling of the plate 5. The plate 5 is splined to a hub 9 on an output shaft 6. The hub 9 is provided with axial bores 15 which permit the flow of cooling air therethrough. The cooling air supply 14 may, as shown, be provided through a fixed housing member 4 or may be provided through the brake disc 3 or output shaft 6. The cooling air flow additionally removes particles worn from the friction surfaces and prevent dirt entering the unit.
Patent GB-1147650-A (GB)
Title: Vinyl benzene/elastomeric block copolymer plastic compositions
Inventor: HARRISON STANLEY RICHARD
IPC: C08L53/00
Filed: 1965-11-16
Abstract: 1,147,650. Vinyl benzene/elastomeric block copolymer compositions. DUNLOP CO. Ltd. 1 Nov., 1966 [16 Nov., 19651, No. 48526/65. Heading C3P. A polymer of vinyl benzene is blended with 2-40% by wt. of an elastomeric block copolymer of formula A- (B-A) n  where A is a polymer block having a second order transition temperature greater than 25‹ C. and a number average mol. wt. of 200-100,000, B is an elastomeric polymer block having a number average mol. wt. of 25,000-1,000,000 and a glass transition temperature below 10‹ C. and n is 1-10. The vinyl benzene polymer may be styrene or a copolymer thereof with α-methyl styrene. The block copolymer may be formed of polystyrene or poly(α-methyl styrene) (as the A block) and polybutadiene, polyisoprene or an elastomeric copolymer of ethylene and propylene (as the B block). The blend may also contain natural rubber or a synthetic rubber e.g. a copolymer of butadiene and styrene. The blends may be moulded into sheets.
Patent GB-1132586-A (GB)
Title: Improvements in or relating to internal combustion engines
IPC: F02B3/06
Filed: 1965-11-17
Abstract: 1,132,586. Cylinders. SOC D'ETUDES DE MACHINES THERMIQUES. Nov. 17, 1965 [Nov. 17, 1964], No.48784/65. Heading F1B. The join between the contiguous surfaces of the cylinder liner of an I. C. engine and either the cylinder block or the crank-case is formed, in the region of the crank-chamber, with a recess in one of the surfaces, a sealing element in the recess to form a seal between the surfaces, and between the sealing element and the crank-chamber a plurality of clearance gaps, no further seal being provided between the gaps and the crankchamber. The recess and gaps may be formed in either the liner or the cylinder block and may each comprise a separate circumferential annular recess, the sealing element also being annular, Fig. 1 (not shown). The arrangement is stated to mitigate deterioration of the surfaces caused by the aspiration of crank-case fumes into the gap formed intermittently between the surfaces when the engine is running.
Patent GB-1073243-A (GB)
Title: Twisted collagen ribbon
Inventor: NICHOLS JOSEPH
IPC: A61L17/08
Filed: 1963-12-13
Abstract: A homogeneous aqueous dispersion of substantially pure swollen collagen fibrils is extruded through a slit into a fllowing dehydrating bath consisting essentially of aqueous ammonia and acetone to form a ribbon, and the ribbon is twisted, stretched and dried to form a suture.  The extruded ribbons, which may be stretched in two stages, and subsequently tanned consist of collagen fibrils aligned parallel to the longitudinal axis of the ribbon, and having the rectilinearity and landing at intervals of about 640 Angstrom typical of collagen fibrils in the natural state.  A multiplicity of extruded ribbons may be bonded together to form a composite structure having the form of a tape or ribbon. In one embodiment, a 1% dispersion of beef tendon fibrils, swollen in aqueous cyanoacetic acid, is extruded as a flat ribbon into a circulating dehydrating bath, washed and tanned during a two-stage stretching process, dried by hot air and wound.  The ribbon is stored as such and processed subsequently to form a rounded stand. Extrusion may be horizontal or vertical.  The tanning solution may be aqueous formaldehyde containing aluminium ammonium sulphate. The suture may be obtained by heating the dried and tanned ribbon with a bonding agent e.g. dextran sulphate, and twisting together one or more of the ribbons to form a unitary linear structure.ALSO:A homogeneous aqueous dispersion of substantially pure swollen collagen fibrils is extruded through a slit into a flowing dehydrating bath consisting essentially of aqueous ammonia and acetone to form a ribbon, and the ribbon is twisted, stretched and dried to form a suture.  The extruded ribbons, which may be stretched in two stages and subsequently tanned consist of collagen fibrils aligned parallel to the longitudinal axis of the ribbon, and having the rectilinearity and landing at intervals of about 640 Angstrom typical of collagen fibrils in the natural p state.  A multiplicity of extruded ribbons may be bonded together to form a composite structure having the form of a tape or ribbon. In one embodiment, a 1% dispersion of beef tendon fibrils, swollen in aqueous cyanoacetic acid, is extruded as a flat ribbon into a circulating dehydrating bath, washed and tanned during a two-stage stretching process, dried by hot air and wound.  The ribbon is stored as such and processed subsequently to form a rounded stand. Extrusion may be horizontal or vertical.  The tanning solution may be aqueous formaldehyde containing aluminium ammonium sulphate. The suture may be obtained by heating the dried and tanned ribbon with a bonding agent e.g. dextran sulphate, and twisting together one or more of the ribbons to form a unitary linear structure.
Patent GB-1384937-A (GB)
Title: Method of producing gelatin
IPC: A23J1/10
Filed: 1972-10-26
Abstract: 1384937 Extracting gelatine VSESOJUZNY NAUCHNO - ISSLEDOVATELSKY INSTITUT PTITSEPERERABATYVAJUSCHEI PROMYSHLENNOSTI 26 Oct 1972 49342/72 Heading C3H A method of producing gelatine from collagen-containing animal tissue comprises treating tissue with an alkali solution containing a salt of an inorganic acid, neutralizing the resulting partially disintegrated material with a solution of an inorganic acid containing a salt of an inorganic acid preferably orthophosphoric acid to cause swelling and further disintegration of the material, freezing the swollen acid-treated material, e.g. at - 10 to - 12‹ C. to further disintegrate it, washing the material, boiling the washed material in an aqueous medium to obtain a gelatine broth and recovering gelatine from the broth. The washing is preferably carried out using a salt of a sulphur-containing acid, e.g. sodium sulphate and the preferred alkali treatment uses sodium hydroxide solution saturated with sodium sulphate.
Patent GB-1016370-A (GB)
Title: Hot water supply apparatus
IPC: A47J31/56
Filed: 1964-12-04
Abstract: 1,016,370. Delivering measured quantities of liquid. COPY CORPORATION. Dec. 4, 1964 [Dec. 6, 1963], No. 49523/64. Heading B8N. Apparatus for delivering measured quantities of hot brewing liquid comprises first and second chambers 12, 13, means 35 for sensing the level of the liquid in the chamber 12, a heating element 25 in the chamber 13, and means responsive to the level sensing means for effecting delivery and a terminating delivery of liquid from the chamber 13 when the liquid in the chamber 12 reaches predetermined low and high levels respectively. The level sensing means is in the form of a float 35 co-operating, via adjustable stops 38, 39, with a switch 41 connected with a control device 34. In operation, upon actuation of a push-button 42, an electrically-operated pump 28, 31 is started so as to pump hot liquid from the chamber 13 through an outlet 30. The dispersed hot liquid is replaced by cold liquid from the chamber 12, via a pipe 21 leading into the chamber 13, until the level of the liquid in the chamber 12 falls to a point whereby the stop 39 abuts a lever 40 on the switch 41 to thereby stop the pump and, simultaneously, open a solenoid-actuated valve 19, 20. Liquid then flows into the chamber 12 until the level rises to cause the stop 38 to actuate the switch 41 and shut the valve 19. In modifications, the pump 28 may be located in the chamber 12 above an opening 22 communicating with the pipe 21 or, the pump may be dispensed with and replaced by a solenoidactuated outlet valve.
Patent GB-1115800-A (GB)
Title: Improvements in or relating to methods of supplying a selected gas to an enclosure
Inventor: WEHNER GOTTFRIED KARL
IPC: C23C14/00
Filed: 1965-11-23
Abstract: In a process of reactive cathodic sputtering, in which a secondary gas is present to react with the material sputtered, a plasma discharge is generated in an enclosure which also contains a further electrode subject to an alternating potential, and adjacent this electrode is placed the material to be sputtered and a compound of the desired secondary gas, when, under the influence of the plasma discharge and the alternating field, the compound dissociates, reacts with the material to be sputtered and is sputtered as this combination on to a substrate also present in the chamber. Apparatus suitable for this process was disclosed and claimed in UK Specification 994,911.  Materials to be sputtered are given as Al, Cr, Hf, Si, Ta, Ti and Zr, and the secondary gas may be oxygen or nitrogen introduced into the chamber as an oxide or nitride preferably of the material which forms the plasma discharge, e.g. mercuric oxide when using a mercury vapour discharge.  Preferably the ratios of the surface areas of the compound of the gas supplied and the material to be sputtered are such that a desired compound is produced during the reaction between them.  Preferably a preform of the compound of the gas to be supplied e.g. HgO is positioned directly upon a target material e.g. Ta with the exposed surface areas in the ratio 5:1 when Ta2O5 is produced and may be sputtered as a coating on an object within the chamber.ALSO:A gas, for example oxygen or nitrogen, is supplied to the atmosphere within an enclosure by subjecting a compound of the gas to be supplied to the action of a plasma discharge, generated in the enclosure between at least two electrodes, and an alternating electric field applied between an additional electrode placed adjacent said compound within the enclosure, and the plasma, when said compound dissociates into its elements to supply the desired gas. Preferably the compound is a compound of the said gas and the material forming the plasma discharge e.g. mercuric oxide using a mercury vapour discharge.  If desired a further target material e.g. Al, Cr, Hf, Si, Ta, Ti and Zr may be sputtered using the same plasma discharge when it reacts with the supplied gas to form a compound.  The ratio of the surface areas of the compound of the gas supplied and the further target material is adjusted so that a desired compound is produced during the reaction.  Preferably a preform of the selected compound e.g. HgO is positioned directly upon a target material e.g. Ta with exposed surface areas in the ration 5: 1 when Ta2O5 is produced and may be sputtered as a coating on to an object in the chamber.
Patent GB-1186171-A (GB)
Title: Improvements in Methods of Turning.
Inventor: KAHN CHARLES HENRI
IPC: B23Q11/00
Filed: 1965-11-23
Abstract: 1,186,171. Turning. MOLINS MACHINE CO. Ltd. (Manufacture Doutillages & Machines Speciales). 22 Nov., 1966 [23 Nov., 1965], No. 49811/65. Headings B3B and B3T. A lathe comprises a tool 23 held stationary during turning and arranged so that the tool vibration is predominantly longitudinal. The work 1 is held in a chuck 2 rotated by an hydraulic motor in a quill 4 advanced by an hydraulic or electrically-operated actuator. The headstock 5 is movable vertically on a slide 6 by hydraulic or screw means. The slide 6 may be moved instead of the quill 4. A tool store 9 contains pairs of magazines 10, 11 and 12, 13 containing, in one, end-tools such as drills, and in the other of a pair, turning tools. The tools are retracted when not in use. The lathe is numerically-controlled. The tools may be as shown in Figs. 3 or 4 or 5 and may be inclined to the planes of those Figures.
Patent GB-1172925-A (GB)
Title: Hasp and Staple Fasteners
Inventor: MORGAN BARRIE CHARLES
IPC: E05C19/08
Filed: 1967-11-02
Abstract: 1,172,925. Hasp and staple fasteners. HUMPHREY & J. FOX & R. H. MORGAN Ltd. 22 Oct., 1968 [2 Nov., 1967], No. 49858/67. Heading E2A. A hasp and staple fastener comprises a hasp' 10 pivotable about an axis normal to a mounting plate 12 and having an eye part with an eye 18 which engages in a staple 19 on a mounting plate 20, a padlock or peg passes through the eye 18 to secure'the hasp to the staple. The backs of the mounting plates have threaded bosses to receive fixing screws.
Patent GB-1073049-A (GB)
Title: Closure device for the outlet of a jet lift engine passage
IPC: B64C1/14
Filed: 1965-11-24
Abstract: 1,073,049. Direct lift jet engines. DORNIERWERKE G.m.b.H. Nov. 24, 1965 [Nov. 26, 1964], No. 49903/65. Heading B7G. A direct lift jet engine is mounted in an aircraft, and the opening through which it discharges is provided with (a) a main flap 4 pivotally mounted on one side of the opening, and movable between a position closing the opening, an open position, and an intermediate position in which it deflects the engine exhaust; (b) a retractable auxiliary flap 7 mounted on the other side of the opening; and (c) a spoiler flap 8 arranged ahead of the opening. The flaps when extended form three sides of a box and produce in forward flight a low-pressure region at the engine outlet to facilitate starting the lift engine. The main and auxiliary flaps are moved by a common actuator through a linkage which produces the maximum extension of the auxiliary flap when the main flap is in its deflection position, which is used during ground running to prevent ground erosion. The link (18, Fig. 2, not shown) attached to the auxiliary flap includes a spring box to allow extension to be delayed to clear the main flap. A. flange (9, Fig. 1, not shown) on the forward edge of the main flap may be provided to fill any gap between the main and spoiler flaps.