baber/WOPTO huggingface dataset:
Patent GB-982498-A (GB)
Title: A process for preparing fluorohydrocarbons
IPC: C07C17/275
Filed: 1963-06-17
Abstract: Fluorohydrocarbons of the general formula <FORM:0982498/C2/1> wherein X represents a hydrogen or fluorine atom and Y represents a chlorine, bromine or iodine atom, are prepared by heating a compound of the general formula CX2 = CX2 with a compound of the general formula CF3CFYCF3Y in the presence of an organic peroxide free-radical catalyst.  The reaction is normally performed in a pressure vessel in the absence of air.  Fluoroisoprenes of the general formula <FORM:0982498/C2/2> may be prepared from the products of the above reaction by either dehalofluorination with metallic zinc, if there is no hydrogen on the 3-carbon atom, or dehydrohalogenation with an alkali metal hydroxide and subsequent dehalofluorination with metallic zinc, if there is a hydrogen atom on the 3-carbon atom.  The isoprenes so formed may be polymerized by exposure to ultra-violet light.ALSO:Fluoroisoprenes of the general formula <FORM:0982498/C3/1> wherein X represents a hydrogen or fluorine atom, are polymerized by exposure to ultraviolet light.  An example relates to the polymerization of 1,1-difluoro-2-(trifluoromethyl)-butadiene-1,3.
Patent GB-259557-A (GB)
Title: Method of constructing propellers
IPC: B64C11/16
Filed: 1926-09-29
Abstract: 259,557. Soc. Anon. pour l'Exploitation des ProcÚdes M. Leblanc- Vickers. Oct. 9, 1925, [Convention date]. Void [Published under Sect. 91 of the Acts]. Screw propellers.-The blades of screw propellers and windmills are formed with two plates rigidly braced together and the bracing members may be formed to provide additional propulsive or power effort. Each blade is formed of two elements a, b separately attached to the hub and joined together at the tip, intermediate struts e being provided. Inclined bracing pieces may be fitted in addition to the struts. The composite blades may be mounted for pitch and adjustment or oscillatory for automatic setting under centrifugal and thrust forces.
Patent GB-695786-A (GB)
Title: An improved tractor seat
IPC: B60N2/40
Filed: 1949-09-21
Abstract: 695,786. Resilient mountings for seats. FERGUSON, Inc., H. Sept. 21, 1949 [Sept. 25, 1948], No. 24242/49. Class 52(i) In a tractor seat the seat pan is arranged on the preferably resilient support so that it may, by means of hinge members, be moved rearwardly and then swung into an out-of-way position while the driver is standing on the tractor. The seat pan 20 is provided with a bracket 37 to which a hinge leaf 26 is hinged at 36 the other end of the hinge leaf 26 being hinged at 30 to a bracket 32 secured to the U-shaped resilient suport 21 which is mounted on, and bolted to by bolts 23, the tractor. In moving the seat pan to out-of-way position it is moved rearwardly causing the hinge pivot 36 to move along the circular path 27, Fig. 3, taking the hinge leaf 26 with it. Continued movement of the seat pan 20 inverts it into the position shown in Fig. 4. The bracket 32 has side wings or flanges which serve as spaced rests for the seat pan which also has a rubber buffer 40.
Patent GB-1195166-A (GB)
Title: Gas Cooled Nuclear Reactor.
Inventor: WILSON STANLEY GEORGE
IPC: G21C9/04
Filed: 1968-05-21
Abstract: 1,195,166. Reactors. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. 30 May, 1969 [21 May, 1968], No. 24244/68. Heading G6C. A gas-cooled nuclear reactor includes means for introducing into fuel-containing channels of the reactor via a coolant inlet, a non-combustion-supporting gas-filled aqueous high expansion foam. The gas filling may be CO 2 . The foam can comprise 800 parts gas to each part of water by volume, so that the water is widely dispersed and gives rise neither to thermal shock nor to disturbance of the neutron physics of the core. The foam has a better heat transfer ability than the gas alone by a factor of fifteen, and serves to remove decay heat from the fuel whilst the coolant is at atmospheric pressure as a result of a leakage. The apparatus used may comprise a foam generator and a foam duct leading into an inlet plenum, or spray means for the foam solution and a wire mesh positioned in a coolant inlet to receive the foam solution and disposed where a gas circulator will cause a draught through the mesh sufficient to generate foam from the solution and convey it to the desired region.
Patent GB-248808-A (GB)
Title: Improvements in or relating to methods of and machines for making boot, shoe, corsetand like laces
IPC: A43D98/00
Filed: 1924-10-13
Abstract: 248,808. Marks, E. C. R., (Matson Lace Tipping Machine Co.). Oct. 13, 1924. Moulding tips for boot &c. laces.-Lace tipping material is applied at regular intervals along a length of lacing as it is fed towards a plurality of dies carried on a rotary turret plate. Each die applies pressure to a tipped portion of the lace engaged therein, to form the tip for the major part of a revolution of the die plate so that the formation of a number of tips proceeds simultaneously. The lacing is drawn from a drum and is carried by conveyer chains towards the dies, tipping material such as celluloid or a rubber compound being applied from a heated tank 83, in which the tipping material is maintained at a uniform temperature, by means of a pivoted arm having a pad at one end. Each die comprises two lower plates 31, with a small slot 32 between them, Figs. 12, 15, and an upper die plate 41 slidably mounted relatively thereto and adapted to be moved, to compress the tipping material, by the engagement of a cam surface 50 on the dies with a stationary cam surface 54. As the lace is fed forward it is lifted from the conveyers by one of the dies on the rotating plate 26 and is clamped in position on the lower plate of the dies by spring-pressed arms 36. The die plates co-operate to form the tip and a knife edge is moved in the slot 32 in the lower die plate to sever the tipped portion by removing a small portion of the lace, the tipping material being moulded around the end of the lace at the same time. The clamping arms 36 are raised to release the lace just before the die has completed a revolution by the engagement of pins 37 on the arms with a cam 191, Fig. 2. Specification 224,931 is referred to.
Patent GB-429559-A (GB)
Title: Process for concentrating or enriching rubber latex
IPC: C08C1/08
Filed: 1934-08-23
Abstract: Rubber latex is creamed by the addition of water-soluble synthetic polymerhomologous substances of hemicolloidal or eucolloidal nature. The terms "polymerhomologous," "hemicolloidal," and "eucolloidal" are defined in the Specification.  Suitable substances are polyvinyl alcohols, alkali or ammonium salts of polyacrylic acids, polyethylene oxides, ethers such as methyl or oxyethyl ethers of polyvinyl alcohols or of cellulose, starch, dextrin, or lichenin, or alkali salts of the acids obtained on reacting halogen fatty acids such as chloracetic acid with cellulose.  The action of the creaming agent can be increased by adding a substance such as borax to increase its viscosity.  The concentration may be effected solely by creaming, or the creaming may be combined with centrifuging, filtration, or evaporation.  During evaporation, stabilizers such as potassium oleate may be added.  The creaming may be carried out at room temperature, but is accelerated by treatment at, for example, 60-100 DEG  C.
Patent GB-1149300-A (GB)
Title: Improvements in the production of nitrogen by air separation
IPC: F25J3/04
Filed: 1967-05-25
Abstract: 1,149,300. Cold separation of air. LA FLEUR CORP. 25 May, 1967 [12 Aug., 1966], No. 24373/67. Heading F4P. Compressed air leaving the cold end of a heat exchanger 18, Fig. 1, is divided into a first stream 22 which is fed to a fractionating column 28, and into a second stream 24 which is further cooled by work expansion in a turbine 30 and then warmed by pressure through a heat exchange path 34 extending downwardly through the column 28 which is thereby cooled, and the so-warmed second air stream is passed through the shell side of exchanger 18 to cool feed air in path 16 thereof, product compressed nitrogen and oxygen-rich liquid being withdrawn form the column 28 through lines 36, 38. In a modification a portion of product compressed nitrogen is condensed in a coil 52, Fig. 2, flashed at a valve 58 into a tank 60 from which product liquid nitrogen is withdrawn at 62 whilst nitrogen vapour is added to that leaving the warm end of heat exchange path 34; coil 52 being cooled by oxygen-rich liquid withdrawn from column 28 and exhausted at a valve 56. The so-warmed oxygen vapour is also added to the nitrogen leaving path 34 and the combined stream used to cool exchanger 18.
Patent GB-203520-A (GB)
Title: Improvements relating to power-driven laundry washing machines
IPC: D06F37/04
Filed: 1922-09-08
Abstract: 203,520. Croxon, W. C. Sept. 8, 1922. Washing-machines with enclosed rotary receptacles. - The stationary cylindrical casing is formed of steel end plates e stamped or pressed into dished or cupped shape and reduced peripherally to take a. sheet metal cylinder 2 which is contracted on them by bolts 5 and lugs 4; the reduced portions may be grooved to receive packing material. The bolts and lugs are protected by guards 8.
Patent GB-1168015-A (GB)
Title: Liquid Distributor with Pneumatic Control
Inventor: ESPALLAC PIERRE
IPC: G21C19/00
Filed: 1968-05-22
Abstract: 1,168,015. Fluid regulation. COMMISSARIAT A L'ENERGIE ATOMIQUE. May 22, 1968 [June 1, 1967], No.24487/68. Heading G3H. A device for selectively distributing the flow of liquid from a source 5 to outlets 7 and 12 in a chamber 2 vented at 16, comprises a tube 8 which can receive pneumatic pressure through inlet 13 whereby the liquid level in tube 8 is caused to fall beneath the top of outlet 7, and the liquid in chamber 11 is raised to the level of outlet 12. Reduction of the pneumatic pressure cuts off the supply to outlet 12 and restores the flow from outlet 7.
Patent GB-299841-A (GB)
Title: Improvements in and relating to electric switches
IPC: H01H9/08
Filed: 1928-08-27
Abstract: 299,841. Schapringer, G. Nov. 2, 1027, [Convention date]. Couplings combined with switches.-Switches of the two-part rotary type, of which the upper part carries the switch device whereas the lower carries only the members for securing the switch to the base and for connecting it up to the leads, have the two parts removably connected together by connections usually employed with incandescent lamps. Replacement of a wornout switch can then be effected without trouble and without making the circuit dead.
Patent GB-947129-A (GB)
Title: Container having a non-metal body
Inventor: FRONCZEK LAURENS HEINRICH
IPC: A45C13/26
Filed: 1962-06-27
Abstract: 947,129. Handles for containers. METAL CONTAINERS Ltd. June 27, 1962 [June 3, 1961], No. 24651/61. Heading B8D. A non-metal container 11 has a handle 12 pivoted thereto by means of a bearing member 13 having a flat base abutting the outer surface of the container and secured thereto by means of a strap 14 which covers the base and is secured to the container body. A container having two diametrically opposed handles has two bearing members each having two flat portions 13a, 13b joined by a U-shaped portion 13c which passes through a slot 15 in the strap and receives the bent extremities of the handle. The lower edge 13d of the bearing member is bent outwards to prevent the member from sliding upwards when the container is lifted. The strap may be constituted by a reinforcing ring for the upper rim of the container. The strap may be glued to the container.
Patent GB-449376-A (GB)
Title: Press for vulcanising rubber parts by electricity
IPC: B29C35/02
Filed: 1935-09-04
Abstract: A fusible alloy for use in the contact breaker of an electrically heated vulcanizer consists of 10 parts of lead, 10 parts of tin, and 4 parts of bismuth.
Patent GB-886610-A (GB)
Title: High flexural strength copolymers and method of preparing the same
IPC: C08F220/44
Filed: 1960-07-15
Abstract: Copolymers are made by copolymerizing together a mixture comprising 50 to 80 parts by weight of acrylonitrile, 20 to 45 parts by weight of methyl methacrylate, 1 to 10 parts by weight of methacrylamide and 0,1 to 2%, based on the weight of material being polymerized, of allyl methacrylate.  The polymerization is carried out in bulk by heating the ingredients with 0,01 to 0,8% of a free-radical catalyst at a temperature of 50 to 70 DEG  C. for 1 to 6 hours and then curing the product by heating it at 70 to 90 DEG  C. for 15 to 30 hours, followed by heating at 90 DEG  to 120 DEG  C. for 15 to 30 hours. Catalysts specified are benzoyl, lauryl and tert.-butyl peroxides, cumene hydroperoxide, azoisobutyronitrile, potassium persulphate, oximides, metal alkyls, hydrazines and amine oxides.
Patent GB-1285018-A (GB)
Title: A label reading system
IPC: G06K7/10
Filed: 1971-04-19
Abstract: 1285018 Label reader BENDIX CORP 19 April 1971 [9 April 1970] 24744/71 Heading G4M System for reading a label having alternating light and dark areas has a light source scanning the areas, a transducer receiving light reflected from the areas, a logic means for processing signals from the areas and means responsive to the distance of the label from the light source to vary the processing characteristics of the logic means. A label has alternating bars of light and dark areas each bar having one of two widths and the label has at each end an identical bar of greater width (Fig. 3, not shown). The label is fixed to a package carried on a conveyer below a sensing station having a light source, a rotary multisided mirror, a screen reducing stray illumination and a photo-electric transducer. A laser beam may be used. The mirror is arranged so that the width of the conveyer is scanned twice during passage of a label. Signals from the transducer pass an amplifier 45, a bandpass filter to remove noise signals and a threshold 48 reconstituting the signal to supply a pulse sampler 50, a clock generator 52 and a shift register. The pulse sampler (Fig. 4, not shown) has a differentiator receiving the pulses and applying a reset pulse to a counter for each positive and negative transition received and a free running oscillator feeding the counter. The counter is arranged to attain a specific value if a correct pulse occurs, and if a different value is present when a reset pulse is generated an invalid pulse signal is produced. The pulse generator (Fig. 6, not shown) has a one shot triggered by each positive going excursion feeding a further one shot to produce a short clock pulse a predetermined time after the positive going excursion. The clock generator feeds a counter and shifts data along a shift register. When a predetermined number of digits have been read a valid label signal enables AND gates 58, 59. The label is arranged to have a first pulse of one sense and a last pulse of another sense so one of lines 58a, 59a is enabled depending on whether the label was supplied forwards or backwards. The pulses enable forward or backward transfer from gates 60 so that the digits are always supplied in the same sense and feed flip-flop 62 via exclusive OR gate 72. Gate 72 ensures that incorrect data , wherein both first and last pulses are both "1" or "0" prevents transfer. The flip-flop alternately enables gates 63, 64 so that each label, which is scanned twice, has data stored in both registers 65, 66. The data is compared before being supplied to terminal 35. The system contains a photo-cell obstructed by articles above a certain height to alter the predetermined count in the pulse sampler and the period of the clock pulses due to the alteration in scanning time produced as the label approaches the scanner. The label may be semi-circular or rectangular (Figs. 3, 10, not shown).
Patent GB-1300382-A (GB)
Title: Improvements relating to suspension arrangements for tracked vehicles
Inventor: EDE AINSLEY NEVILLE
IPC: B62D55/112
Filed: 1968-10-06
Abstract: 1300382 Endless-track vehicles LAND & WATER MANAGEMENT Ltd 6 Jan 1970 [6 Oct 1968] 24783/68 Heading B7H [Also in Division F2] An endless-track vehicle has track assemblies each comprising a flexible rubber track having reinforcing means which limit back-flexing, and air cushions on which the entire weight of the vehicle is supported, each cushion being located between the upper and lower track runs and containing air at super-atmospheric pressure, and the lower part of the cushion being in sliding engagement with the track either directly or through an intervening member. In Figs. 1 and 2 each air cushion comprises an enclosure 25 open at the bottom and having sidewalls which slide on the lower track run 11B and are formed by inflated flexible tubular rings 26 extending around fixed arcuate guides 27, 28. The lower part of the ring 26 is of a larger diameter than the upper part 26A, and the surface of the rings 26 may be lubricated with water or other lubricant. Rubber flaps 31 close the ends of the enclosure 25 and intermediate rubber flaps 33 control the longitudinal flow of air in the enclosure 25 to reduce pitching. The body 22 of the vehicle is supported on rigid plates 20 forming the top walls of the enclosures 25 by transverse and longitudinal frame members 23, 24. An endless chain 13 attached to the inner surface of each track 11 engages a driving sprocket 14. In a modification, Fig. 5 (not shown), the sidewalls of the air cushion enclosure are formed by corrugated flexible panels whose lower edges are in sliding contact with the lower track run. In Fig. 5 each air cushion is formed by an elongated flexible bolster 50 having a bottom wall 57 which is air-permeable or formed with holes 58 so that air leaking from the cushion chamber 25B forms an air bearing between the bottom wall 57 and the lower track run 11B. Longitudinal grooves 65 may be provided in the bottom wall 57 and/or in the track 11. In another modification, Fig. 11, the air cushion is sealed and supplied with compressed air through a pressurereducing valve 73, the air bearing being supplied at higher pressure through tubes 71. Flexing of the track is limited by tension wires embedded therein, by arranging that driving chain is maintained under tension or has only limited articulation, or by providing the outer surface of the track with rigid wear plates interconnected by pin and slot connections.
Patent GB-217484-A (GB)
Title: Improvements in loose leaf binders
IPC: B42B5/10
Filed: 1923-10-05
Abstract: 217,484. Hare, F. C. Oct. 5, 1923. Post files; holders for pencils and the like.-In a looseleaf binder in which the leaf-retaining member comprises a back piece 1 and ring- shaped elements 2 integrally formed therewith, additional smaller ring-shaped elements 3 are provided to hold a pencil or the like.
Patent GB-1480454-A (GB)
Title: Shoe component manufacturing process
IPC: A43B1/10
Filed: 1975-06-10
Abstract: 1480454 Shoe components BONON FOOTWEAR CO Inc 10 June 1975 [22 July 1974] 24815/75 Heading B5A [Also in Division C3] Thermoplastic rubber shoe components, e.g. soles, forcing strips and toecaps, are made by forming the rubber into small pieces in a manner whereby the rubber is not substantially thermally degraded, by blending said small pieces with a composition comprising a plasticizer for said thermoplastic rubber at a temperature such that particles are neither degraded nor fused together into a solid mass, and forming the thermoplastic rubber material into the shape of said shoe component, e.g. by injection moulding, preferably directly on to a cloth upper. Other ingredients than the plasticizer can be added at the dry blending stage, e.g. fillers, colouring agents, and resins which modify the properties of the thermoplastic rubber.
Patent GB-1467970-A (GB)
Title: Purification of polyethers
IPC: C08G65/30
Filed: 1975-05-02
Abstract: 1467970 Purification of polyethers IMPERIAL CHEMICAL INDUSTRIES Ltd 2 May 1975 [5 June 1974] 24839/74 Heading C3R Polyethers, which are liquid reaction products obtained by sequential addition of ethylene oxide and at least one other alkylene oxide (e.g. propylene oxide) to an active hydrogen containing compound, are purified by treatment with a mixture containing 1 part by wt. of active carbon and 2À5-7À5 parts by wt. of synthetic magnesium silicate. From 0À5-15% by wt. of the mixture may be used, based on the weight of the polyether treated. Examples relate to the treatment of an ethylene oxide tipped oxypropylated glycerol (M.W. 5300, oxyethylene content 14%).
Patent GB-1344482-A (GB)
Title: Duplicating process
IPC: B41M5/025
Filed: 1971-04-19
Abstract: 1344482 Migration imaging XEROX CORP 19 April 1971 [23 March 1970] 24976/71 Heading G2H A migration image is prepared from a layer of softenable material containing particulate or fracturable migration material by (i) applying a migration force (e.g. electrostatic or magnetic), and (ii) softening the softenable material, and is contacted with a transfer member and then separated therefrom so that a portion of the layer bearing the migration image is transferred to the transfer member, enough migration material being left in the layer after transfer to effect a further similar transfer. The imaged layer may be longitudinally split before transfer by the process of Specification 1297129. The transfer member may be adhesive paper or film and the transfer effected using heat and/or pressure.
Patent GB-802013-A (GB)
Title: Process for the production of artificial filaments and films from viscose
IPC: D01F2/06
Filed: 1955-08-31
Abstract: In the production of regenerated cellulose threads and films from viscose, there is added to the viscose aqueous ammonium sulphide solution equivalent to 0.5-5 per cent by weight, preferably 0.5-3 per cent by weight, of NH4HS, calculated on the viscose, the viscose is extruded with a gamma value of 40 or more into an aqueous coagulating bath containing sodium sulphate, more than 30 g./l. of zinc sulphate and 40-65 g./l. of sulphuric acid, the threads or films so formed being decomposed to regenerate the cellulose and stretched by 80-120 per cent in a hot aqueous bath containing sodium sulphate, zinc sulphate and dilute sulphuric acid.  The viscose preferably has an alkali-cellulose ratio of less than 1 : 1, particularly 0.5 to 0.8 : 1.  The coagulating bath preferably contains 160-260 g./l. of sodium sulphate and is preferably at 50-70 DEG  C.  The stretch bath preferably contains about 2-10 g./l. of sulphuric acid and the stretch is preferably 95-100 per cent.  In the example, there is added to viscose, containing 8.5 per cent of cellulose and 5.9 per cent of caustic soda, ammonium sulphide solution chemically equivalent to 0.9 per cent of NH4HS, calculated on the viscose.  The viscose, after having been ripened to a gamma value of 42, is spun into an aqueous coagulating bath containing 65 g./l. of sulphuric acid, 235 g./l. of sodium sulphate and 50 g./l. of zinc sulphate and having a temperature of 55 DEG  C. and a length of 40 cm., the thread withdrawal speed being 45 m/min.  The products are thereafter stretched by 80 per cent in an aqueous bath at 90 DEG  C. containing 10 g./l. of sulphuric acid.  The process increases the tensile strength and elongation of the threads.