baber/WOPTO huggingface dataset:
Patent GB-1113423-A (GB)
Title: Improvements in or relating to extruded plastic net
Inventor: MERCER FRANK BRIAN
IPC: B29C48/08
Filed: 1964-07-31
Abstract: 1,113,423. Netting. PLASTIC TEXTILE ACCESSORIES Ltd. 19 July, 1965 [31 July, 1964; 9 Feb., 1965], Nos. 30382/64 and 5656/65. Heading D1K. [Also in Division B5] Extruded tubular plastics netting of the kind produced, for example, by the machine described in Specification- 836,555, comiprises bands of meshes transverse to the extrusion axis, the bands differing in shape of mesh to allow a relatively large transverse extensibility of the netting or a relatively low extensibility thereof as the case may be. The extensibility is varied by choice of mesh angle (M 1 , M 2 ) Figs 2 and 3 (not shown), which is the acute angle between strands 1 and the extrusion axis, (M 1 ) being preferably greater than 45, e.g. 60, but may be as low as 35, for low transverse extensibility, and (M 2 ) being always less than 45 and in any case less than (M 1 ) for relatively high transverse extensibility. Various embodiments are described, Figs. 4-7 (not shown), giving the dispositions of mesh angles (M 1 , M 2 ), and the production of such may be achieved in a machine of the kind abovement oned by (i) cyclically varying the rotational speed of one or both of the dies (ii) keeping the die speed constant and cylically varying the hauloff rate and (iii) cyclic reciprocation of a mandrel on which the tubular netting is received after extrusion. If the extruded netting is stretched, molecular orientation may occur in the strands and the mesh angles (M 1 , M 2 ) may be altered sufficiently to reverse their mit al roles, i.e. (M 2 ) becomes greater than (M 1 ) Figs. 8a and 8b. This reversal process is assisted by the fact that strands extruded at angle (M 1 ) are finer than those extruded at angle (M 2 ), Fig. 9 (not. shown.). The netting is primarily made into a bag or sack. Plastics materials intended for packaging purposes, e.g. when made into a bag or sack. Plastics materials specifically mentioned are polyamides, superpolyamides, polyesters, polyvinylchloride and copolymers thereof, e.g. with vinylacetate or cinylidine chloride, cellulose acetate, natural or synthetic rubber, thermosetting resins alone or mixed with thermoplastics, foamed polystyrene and foamed polyethylene.
Patent GB-815099-A (GB)
Title: Improvements in or relating to apparatus for the manufacture of bottle caps from strip material
IPC: B21D51/44
Filed: 1955-10-25
Abstract: 815,099. Feeding webs. EVANS, D. Jan 25, 1957 [Oct, 25, 1955], No,. 30537/55. Class 100(1) A mechanism for intermittently feeding a strip 12, comprises a guide channel 11 through which the strip 12 is fed and a rotary feed wheel 15 having a segment 17 of greater radius than the remainder of the periphery which contacts the strip in the guide channel at each revolution of the wheel to feed the strip forwards an amount substantially equal to the length of the arc of the segment 17, the segment 17 having a minor portion 31 of less width than the major portion 34, such that, in normal operation, one of a series of apertures 32 in the strip having a width greater than the portion 31 arrives at the point of driving contact between the feed wheel and the strip while the portion 31 is passing so that the feed movement ceases, thereby controlling the length of feed by the spacing of the apertures in the strip. As shown, the foil strip 12 is fed through a guide channel 11 to a punching machine, not shown, for producing bottle caps between. The guide channel 11 is formed between front and rear plates 13, 14, the rear plate 13 having a slot 18 through which the wheel 15 engages the strip adjacent one of its edges. A spring-pressed roller 19 projects through an aperture, not shown, in the plate 14 to press the strip 12 into contact with the wheel 15. The wheel 15, carried by a shaft 21 and driven from a sprocket 22, may comprise plies 35, 36 and 37 of metal of equal thickness. the centre ply 36 being extended beyond the other plies to constitute the portion 31. The strip 12 has apertures 32 along each edge spaced apart longitudinally a distance corresponding to the pitch between areas of printing 33 on the strip. Each aperture is narrower than the portion 34 but wider than the minor portion 31. The circumferential length of the portion 34 plus half that of the portion 31 is chosen to be substantially equal to the pitch between the areas of printing 33. If desired, a feed wheel may be provided to act along both edges of the strip. A guide roller 23 over which the strip passes is mounted between spring-pressed balls 24, thereby reducing friction and facilitating replacement. Specification 736,504 is referred to.
Patent GB-653223-A (GB)
Title: Improvements in or relating to the reinforcement in situ of tapered tubular poles with concrete or grout
IPC: E04H12/12
Filed: 1948-11-25
Abstract: 653,223. Concrete reinforcement. COLCRETE, Ltd., and DAVIES, L. T. Nov. 25, 1948, No. 30587. [Class 20(iv)] Portable self - supporting reinforcing frameworks for insertion into upright tapered tubular poles, for example, those supporting overhead cables, to enable the poles to be strengthened in situ by reinforced concrete, each comprise two or more longitudinal bars firmly connected together at spaced intervals by spacers which permit the bars to move towards or away from each other, thus allowing the assembly to be inserted into a pole through the smaller end thereof, the bars spreading apart after or during insertion. In the form shown, the reinforcing framework comprises four longitudinal bars, 11, 12, 13 and 14 arranged at the corners of a square, the diagonally opposed bars 11, 12 and 13, 14 being connected at intervals by hairpin-shaped resilient rods 16 which are joined together at 17 where they cross, and joined by their ends to each bar, the rods tending to spread the bars apart. To enable the framework to be inserted through the smaller end 23 of the tubular pole 10, the bars are drawn together by wire ties which are severed as the framework enters the pole, the resilient rods 16 then forcing the bars against the inside of the pole. After the reinforcement is in position, the pole is filled with concrete.
Patent GB-520419-A (GB)
Title: Improvements in and relating to die-casting machines
IPC: B22D17/32
Filed: 1938-10-22
Abstract: 520,419. Casting-machines. POLAK, J. Oct. 22, 1938, No. 30610. Convention date, Nov. 11, 1937. [Class 83 (i)] Clamping moulds.-In a die-casting machine, having a press chamber 1 for the molten metal with a cap 2 and a forcing plunger 71, the pressure for moving the cap 2 down is increased to ensure tight closure, this increased pressure initiating the upward movement of the plunger 71 and also if desired, increasing the pressure on the mould-closing piston 12. The machine has four two-way valves 8 ...11, each connected to water, under accumulator pressure, and to exhaust, of which 11 is operated to close the mould m and 8 to move the piston 3 and cap 2 down. Before it engages the chamber 1, the cap 2, by means of a flange 15, operates the valve 9 to admit water below the piston of an intensifier 5 thus supplying high pressure water to the pistons 3 and 12 and to a plunger 18 previously supplied with low-pressure water and balanced by a plunger 19 similarly supplied. This high pressure operates the valve 10 to admit low pressure water-below the piston 7 and force the metal into the mould. Reversal of the valves 8, 11 causes the parts to return to their original positions.
Patent GB-934003-A (GB)
Title: An improved device for separating potatoes from soil
IPC: B07B13/00
Filed: 1961-08-24
Abstract: 934,003. Separating potatoes from soil. VYZKUMNY USTAV ZEMEDELSKYCH STROJU. Aug. 24, 1961 [Aug. 29, 1960], No. 30619/61. Class 117. A device for separating potatoes from soil and stones comprises an endless conveyer band 1 with side walls 2 forming a separating space, the band 1 and the side walls performing an oscillatary movement as a whole about a shaft 4 which lies in the vertical plane passing through the longitudinal axis of the conveyer band. The shaft is mounted in bearings 5, 6 and the conveyer band 1 and side walls 2 are supported on arms 7, 8 of unequal length so that the amplitude of the oscillatary movement is greater at one end of the conveyer than at the other. A mixture of soil and potatoes is fed from a conveyer 3 on to the conveyer band 1 between the walls 2 to about the level of the dotted line in Fig. 1. The oscillatary movement causes the potatoes to fall off the conveyer band 1 in the direction of the arrow C whilst the stones and soil leave the band 1 in the direction of the arrow D. The conveyer band 1 may alternatively be mounted parallel to the shaft 4 or inclined in the opposite direction to that shown in Fig. 1.
Patent GB-1477364-A (GB)
Title: Vapour-liquid separator
Inventor: ROUHANI S Z
IPC: B04C3/00
Filed: 1974-07-10
Abstract: 1477364 Vapour-liquid separator ATOMENERGI AB 10 July 1974 [16 July 1973] 30645/74 Heading B2P A vapour-liquid separator, e.g. for a steamwater mixture from a water-cooled nuclear reactor, comprises a first pipe 1 for conveying a vapour-liquid mixture from a source 18, a plurality of spaced, annularly-arranged, whirlimparting vanes 3 located within, and extending radially of, the pipe 1, a second pipe 7 located within, and coaxial with, the pipe 1 with its inlet end spaced downstream of the vanes 3 and arranged to receive the vapour component of the mixture separated by the whirling action imparted to the mixture by the vanes, and a wall 8 enclosing the pipe 1 and forming an outlet channel 10 for the separated component, and the end 6 of the pipe 1 downstream of the inlet end of the pipe 7 being perforated to allow the separated liquid component to flow into the channel 10, and each of the vanes 3 presenting a whirl-imparting curved surface to the mixture flow through the pipe 1 with the radius of curvature of the vane increasing from its radially inner edge 13 to its radially outer edge 14. The vanes are mounted between a central body 4 and the inner surface of the pipe 1. Each vane has the shape of a portion of the outer surface of a cone with its edges 11, 12 formed as part of generatrices of the cone, Fig. 4 (not shown). Angular dimensions of the vanes and their relative orientation within the pipe are given.
Patent GB-1206053-A (GB)
Title: Bulk packaging
IPC: B65D77/06
Filed: 1968-06-27
Abstract: 1,206,053. Packages. TETRA PAK AB. 27 June, 1968 [12 July, 1967], No. 30709/68. Heading B8C. A combined package comprises bacteria proof packaging units 2 containing a sterile liquid which are encased by a liquid proof, opaque laminated envelope 1. The packaging units 2 may be of paper or cardboard internally coated with a thermoplastic material and the envelope 1 may be of a paper-aluminium foil-plastics laminate.
Patent GB-672679-A (GB)
Title: Improvements in or relating to mineral oil solutions of barium salts of dithiophosphoric acid esters
IPC: C07F9/165
Filed: 1947-01-07
Abstract: The process of the parent Specification for the production of a solution of a barium salt of an oil-soluble ester of dithiophosphoric acid in a mixture of higher alphatic hydrocarbons such as a petroleum mineral oil is modified in that the acid and basic starting materials are reacted at a temperature between 70 DEG  and 90 DEG  C.ALSO:The process of the parent Specification for the production of a mineral oil solution of a barium salt of an oil soluble ester of dithiophosphoric acid is modified in that the acid and basic starting material are reacted at a temperature between 70 DEG C and 90 DEG C.
Patent GB-988252-A (GB)
Title: Method of etching and contacting semiconductor elements
IPC: H01L23/02
Filed: 1961-08-25
Abstract: 988,252. Semi-conductor devices. STANDARD TELEPHONES & CABLES Ltd. Aug. 25, 1961 [Aug. 30, 1960], No. 30749/61. Heading H1K. In a method of manufacturing a semi-conductor device involving the steps of etching selected portions of the surface of a PN junction-containing element and of subsequently soldering on at least one contact, those parts of the surface of the element not required to be etched are masked with the soldering metal to be used in the subsequent soldering process, the soldering metal either being inherently immune to or being passivated against attack by the etchant. The manufacture of a silicon diode is described. One end of a stranded conductor 1 of copper, silver, or silver-coated copper is inserted into a ring of the same material which is compressed and heated so that a solid block 3 is formed at the end of the wire. (Alternatively, the strands of the conductor may be consolidated by melting or soldering them together.) The solid end of the wire is coated with a layer 4 of a soldering metal such as lead (or lead containing 5% of silver). The solder-covered end of the conductor is pressed against a silicon body 5 and heated in an inert or reducing atmosphere (e.g. N 2 /H 2 ) to solder the conductor to the wafer, a flake 6 of solder being simultaneously applied to the opposite face of the body. Jigs may be used to limit the spread of solder during the process. (The end of the conductor need not be precovered with solder. The conductor may be held against a wafer of solder in contact with the body and the conductor joined to the body in one operation.) The diode is now etched to remove the surface semi-conductor material around the junction, solder layer 6 acting as a mask during the process. A mixture of nitric, hydrofluoric, and acetic acids may be used. To avoid dissolution of even trace quantities of lead during etching, the diode may be dipped before etching into hydrochloric acid to form a protective chloride layer or solder layer 4 and 6. (The flexible part of the connecting lead may be protected by a plastic hose during these steps.) The remaining exposed portion of the semi-conductor body is protected with a lacquer coating 8 and the diode is soldered into its casing 9 which serves both as a connector and as a heat dissipation during operation. The diode is soldered to the casing by a comparatively low melting alloy formed from part of solder layer 6 and a layer of tin previously provided on the casing.
Patent GB-374360-A (GB)
Title: Improvements in moulds for casting metals
IPC: B22D13/10
Filed: 1931-11-06
Abstract: 374,360. Centrifugal casting-machines. TRIGGS, W. W., 57, Lincoln's Inn Fields, London.-(Felten & Guilleaume Carlswerk Akt.-Ges. ; M³lheim, Cologne, Germany.) Nov. 6, 1931, No. 30848. [Class 83 (i).] Mould materials.-A copper mould for centrifugal casting is made electrolytically.
Patent GB-406086-A (GB)
Title: Improvements in or relating to permanent magnets
IPC: H04R9/02
Filed: 1932-11-03
Abstract: Permanent magnets are formed of an alloy the coercive force of which is greater than the remanence, a suitable alloy consisting of 87 per cent of silver, 9 per cent of manganese and 4 per cent of aluminium.
Patent GB-660288-A (GB)
Title: Improvements in or relating to floor-scrubbing machines
IPC: A47L11/30
Filed: 1948-11-30
Abstract: 660,288. Floor-scrubbing machines. LASTOVKA, M. Nov. 30, 1948, No. 31089/48. Class 138 (i) In a floor-scrubbing machine of the type in which cleaning liquid is applied, by means of one or more operative brushes, to an area of floor defined by the housing of the brushes, cleansing liquid thrown off by the operative brush or brushes is collected in a channel disposed adjacent said brushes and having an exhaust pipe laid lengthwise therein and provided with a longitudinal slot on its underside facing the bottom of the channel. In one embodiment, Fig. 1, a channel 1 is provided with lateral plates 8 which are adjustably and slidably guided in the frame 7 of the machine either by the weight of the channel or by spring pressure. Mounted on the plates 8 are channel section rails 9 for packing or sealing inserts 10 of rubber, bristles or felt which engage with the floor. Firmly attached within the channel in a manner not shown is an exhaust pipe 2 closed at each of its ends 4. On its underside facing the bottom of the channel the pipe 2 is provided with a slot 3, Fig. 2, extending along its entire length. Attached to the pipe 2 is a pipe 5 which is connected by a rubber tube 6 to the liquid pump of the machine (not shown). The channel 1 and pipe 2 are movable up and down together within the machine. The channel profile, Fig. 2, is symmetrical, but may be asymmetrical. When the channel is disposed between two operative brushes the edge 12 of the channel which faces the front brush may be extended further outwards in the direction of said brush, thus altering the amount of water propelled into the channel by the front brush. This arrangement of channel prevents choking of the suction pipe 6 since impurities are detained in the channel. The inserts 10 restrict lateral escape of water, wipe water from the floor and are easily interchanged. Three other embodiments are described. One of these embodiments refers to a single roller brush machine and another to a machine having three disc brushes mounted for rotation about vertical axes, a straight spraying device in front of the machine, and the working space shut-off by a V-shaped channel including exhaust pipe forming an open frame around the three brushes. In the last embodiment a single disc brush is surrounded by an annular channel including exhaust pipe. The channel is provided with one or more flexible strips on the side facing the brush and these bear against the floor, and assist the cleaning liquid to enter the channel. Such strips may be provided in the other embodiments by securing them to that edge or edges of the channel facing the brush or brushes.
Patent GB-760916-A (GB)
Title: Improvements in and relating to labels
IPC: G09F3/04
Filed: 1952-12-10
Abstract: 760,916. Laminated materials; coated paper. BRAITHWAITE & SON (DRYSALTERS), Ltd., 1., SMITH, A. L., and WILSON, H. C. Dec. 9, 1953 [Dec. 10, 1952], No. 31273/52. Class 140. [Also in Group XV] A label for attachment to a textile article consists of a sheet 8 of fibrous material from which a portion (or portions) have been removed to form a hole (or holes) 8a and a layer of plastic material covers the hole (or holes) and is capable of being softened, the fibrous material being substantially impervious to the plastic when the plastic is softened. A strip of waterresistant paper 8 has holes 8a punched as shown in Fig. 1. The sheet is then covered with a layer of polyvinyl chloride, the layer being attached to the sheet by heat and pressure or by an adhesive such as gum arabic or cellulose acetate. The composite sheet is then cut along the lines 8c. As shown in Fig. 3, a double thickness of the plastic 10 is completely enclosed by paper 9. Alternatively, the holes may be made after coating the paper with polyvinyl chloride. When the. paper is cut and folded, a double thickness of paper will embrace a double thickness of plastic but only a single thickness of plastic is beneath each hole in the label. As shown in Fig. 5, the polyvinyl chloride is not completely enclosed by the paper but is exposed as indicated at 10a. In the embodiment shown in Fig. 7, a hole 11a is located in a single thickness of paper 11 which is coated with a single thickness of polyvinyl chloride 12 only in the region of the hole 11a so that part of the label is left uncoated to allow for marking.
Patent GB-395374-A (GB)
Title: Improvements in tubular heat exchange apparatus more particularly for heating air by flue gases
IPC: F28F1/12
Filed: 1931-12-12
Abstract: 395,374. Tubes for heat-exchangers ; heating air. KLEINEWEFERS, P., 210, Nordstrasse, Krefeld, Germany. Dec. 12, 1931, No. 31315. Addition to 394,324. [Classes 64 (i) and 64 (iii).] Apparatus, e.g. for heating air by flue gas, comprises an assembly of metal tubes 15 provided with external projections 16 designed as described in the parent Specification and shorter internal projections 17. The air passes through the tubes which are secured to one another by the flanged ends 26 and enclosed in a casing through which the flue gas flows. The projections may be of drop-shaped cross section in the direction of flow of the fluids. In a modification, the tubes 'are formed of rings 20, Fig. 5, spaced apart, if desired, by asbestos washers.
Patent GB-928799-A (GB)
Title: Polyvinyl chloride compositions
IPC: C08L27/06
Filed: 1960-09-12
Abstract: A two-component polymer blend comprises 5 to 99.5% by weight of a vinyl chloride homopolymer or copolymer containing at least 95% by weight vinyl chloride or a blend thereof with up to 10% by weight of a plasticizer and 95 to 0.5% by weight of a copolymer of 60 to 99.5% by weight of vinyl chloride with 40 to 0.5% by weight of a C8-18 alkyl vinyl ether.  Where the first polymer is a copolymer the comonomer may be vinyl acetate, vinylidene chloride or an alkyl acrylate, methacrylate or maleate.  Exemplary compositions also contain 2% of an organo-tin-sulphur stabilizer and tritolylphosphate. The examples give preparitive details for the vinyl ether copolymers used therein, the respective polymerization systems being:- Example 1, vinyl chloride 95 g., cetyl vinyl ether 5 g., water 300 g., methyl cellulose 0.2 g., lauroyl peroxide 0.5 g.; Example 2, vinyl chloride 90 g., myristyl vinyl ether 10 g., water 200 g., azo-bisisobutyronitrile 0.3 g., polyvinyl alcohol 0.3 g.; Example 3, vinyl chloride 85 g., lauryl vinyl ether 15 g., water 250 g., polyvinyl alcohol 0.3 g., benzoyl peroxide 0.5 g.; Example 4, vinyl chloride 76 g., lauryl vinyl ether 24 g., water 200 g., p  ammonium persulphate 0.5 g., sodium dodecyl sulphonate 2 g.; and Example 5, vinyl chloride 86 g., cetyl vinyl ether 14 g., water 300 g., methyl cellulose 0.3 g., azo-bisisobutyronitrile 0.3 g.
Patent GB-889215-A (GB)
Title: A method of producing l-valine by fermentation
IPC: C12P13/04
Filed: 1959-09-15
Abstract: L-valine is produced by the fermentation under aerobic conditions in a nutrient medium containing carbohydrates, nitrogen sources and inorganic substances of a microorganism of the Aerobacter (e.g. A. aerogenes), or Paracolo bactrum (e.g. P. intermedium, P. coliforme) genus.  Suitable carbohydrates are glucose, sucrose, fructose, mannose, maltose, galactose and xylose; molasses and hydrolysed starch may be used.  Suitable nitrogen sources are ammonium salts, sodium nitrate, urea, peptone, meat extract, NZ-amine, corn steep liquor, yeast extract and soybean hydrolysates.  Suitable inorganic substances are K2HPO4, KH2PO4, (NH4)2HPO4, NH4H2PO4, MgSO4, FeSO4, MnSO4 and CaCO3. Growth-promoting agents such as vitamins and amino acids may be added.  The cultivation may be carried out at 20 DEG C.-40 DEG C. for 1-4 days at pH 4.5-8.  The mycelium is then removed, the liquor concentrated under reduced pressure, the pH adjusted to 6, and the solution combined with 2-3 times its volume of ethanol and cooled to 0 DEG C.-5 DEG C. to crystallise L-valine.
Patent GB-538561-A (GB)
Title: An improved automatic coupling suitable for use in lifting sunken vessels
IPC: B63C7/00
Filed: 1939-12-05
Abstract: 538,561. Raising submerged vessels. LLOBERA, M., and MONTANE, J. Dec. 5, 1939, No. 31490. [Class 68 (ii)] The male member of an automatic coupling suitable for use in raising sunken vessels comprises a rod 1 with a conical head 2 hollowed beneath and of larger diameter than the body, while the female member comprises a box 21 carrying radially pivoted arms 22 with hooked free ends 28, these arms being biassed to a closed position by a spring 26 acting on inward projections 23 provided on the arms and engaging the box 21 to limit the closing movement. A float chamber released from the vessel contains a drum from which a cable 8 attached to the male coupling is un-' wound as the chamber rises, a brake being released by a float, and the speed of the drum being governed by a paddle wheel. The brake is reapplied when the float chamber reaches the surface. The cable 8 is then severed and passed through the female coupling which is then lowered along the cable to engage the male member.