baber/WOPTO huggingface dataset:
Patent GB-467992-A (GB)
Title: Improving textile fibres
IPC: D06M13/11
Filed: 1935-12-27
Abstract: Textile materials such as those of cotton, regenerated cellulose, cellulose derivatives, or wool are rendered more water-repellent by treatment first with an alkylene oxide and then to the surface action of a quantity not exceeding the weight of the textile material of an organic esterifying agent containing an uninterrupted chain of at least ten carbon atoms in the molecule. Ethylene oxide, propylene oxide, epichlorhydrin, and butadiene dioxide are specified alkylene oxides.  These may be used in aqueous or organic solvents, or in gaseous phase.  There may be used one molecular proportion of alkylene oxide for two molecular proportions of cellulose, C6H10O5. The esterifying agent may be an anhydride or chloride of a higher fatty acid or an isocyanic acid ester containing an alkyl group of more than 10 carbon atoms.  In an example, cotton calico is soaked in alcoholic caustic soda, squeezed, dried, and then treated with a solution of ethylene oxide in carbon tetrachloride.  The solution is then removed by centrifuging, drying, washing, and again drying.  The pretreated material is impregnated with a solution of stearyl isocyanate in benzine, centrifuged and dried. The material so treated is impermeable to water, and is still water-repellent after washing with soap.  In another example, wool gaberdine is treated with ethylene oxide in carbon tetrachloride, and then with octadecyl isocyanate in carbon tetrachloride.  The treated fabric is impermeable to water.  Worsted fabric is treated with epichlorhydrin in cyclohexane, and then with stearic anhydride in carbon tetrachloride and paraffin.  A fabric containing wool and viscose staple fibre is exposed to butadiene dioxide vapour and then treated with a solution in tetrachlorethane of dichloro sebol fatty acid chloride, obtained from a partially hydrogenized fish-oil fatty acid by chlorination and then formation of the acid chloride.  Loose viscose staple fibres are impregnated with alcoholic caustic soda, centrifuged, dried, and then treated with gaseous propylene oxide. They are then passed through a solution of N-octodecyl-isatoic anhydride in carbon tetrachloride, centrifuged and dried.
Patent GB-814612-A (GB)
Title: Improvements relating to colour television receivers
IPC: H04N9/455
Filed: 1955-12-14
Abstract: 814,612. Television. GENERAL ELECTRIC CO. Dec. 14, 1955 [Dec. 20, 1954], No. 35909/55. Class 40 (3). Relates to a colour television receiver for receiving a composite video signal of the American N.T.S.C. type comprising a luminance signal, a chrominance-modulated sub-carrier located in the video spectrum and a colour reference sub-carrier burst occurring during the line blanking period. According to the present invention the luminance signal is removed by a suitable filter and the resultant chrominance and burst signals are applied at terminal 2 to the grid of a normally conductive triode 32 and to the control grid of a normally cut-off pentode 8 which is gated on during the burst signals by positive pulses 14 derived from the line scanning circuit, the resultant negative D.C. pulses at the screen grid 50 being applied to cut-off triode 32 so that the burst signal only appears at the anode of pentode 8 and the chrominance signal only appears in the cathode circuit of triode 32. Alternatively the positive gating pulses 14 may be applied to the screen grid 50 of pentode 8, the negative gating pulses for triode 32 being then derived from the anode of pentode 8.
Patent GB-301839-A (GB)
Title: Improvements in and relating to electrical alternating current rectifiers
IPC: H01L21/12
Filed: 1928-12-06
Abstract: 301,839. S³ddeutsche Telefon - Apparate, Kabel und Drahtwerke Akt.- Ges., (Assignees of Presser, E.). Dec. 6, 1927, [Convention date]. Contacting-solid resistances.-A high degree of asymmetry in the conducting properties of a dry solid rectitier is secured by (1) the use of selenium or selenium compounds as the rectifying layer between metal electrodes, (ii) forming the layer in intimate connection with one of the electrodes e.g. by fusing or electrolytically depositing it thereon, (iii) making the other electrode of a metal of high atomic weight such as lead or bismuth and mechanically pressing it against the rectifying layer. The electrode with which the layer is intimately connected is preferably made of, or has its surface coated with, iron, nickel, cobalt, chromium, or manganese. Alternatively, an alloy, e.g. of chromium and iron may be employed, and in the case of the other electrode an alloy of lead and bismuth may be used.
Patent GB-1468931-A (GB)
Title: Semiconductor devices
IPC: H01L27/07
Filed: 1975-08-12
Abstract: 1468931 Semi-conductor devices FERRANTI Ltd 12 Aug 1975 [17 Aug 1974] 36313/74 Heading H1K [Also in Division H3] A transistor 21, Fig. 4, in an I.C. is made by forming a N(P) epitaxial layer 30 on a N(P) substrate 31, forming a P<SP>+</SP>(N<SP>+</SP>) isolation region 34 and an adjoining buried P<SP>+</SP>(N<SP>+</SP>) region 33 at the interface 32 of the epitaxial layer 30 and the substrate 31, the isolation region 34 defining two regions in the epitaxial layer 30 one of which comprises an elongate resistor 23, 24, Fig. 3, and the other the base 35 of the transistor 21 whose collector is provided by the isolation and buried regions 34, 33, forming at least two emitters 36 in the base region 35, forming contacts 40, 40<SP>1</SP> at the ends of the resistor region and a contact 41 intermediate the ends, and collector, base and emitter contacts 42, 43, 44, and connecting the base contact 43 with the intermediate resistor contact 41 and the collector contact 42 with the adjacent resistor contact 40 by conductors 46, 47 on a passivating layer 37. The device comprises a resistive potential divider and a diode (22), Fig. 2 (not shown), in parallel and across the collector-base PN junction of the transistor 21, so that a fraction of the diode voltage appears across the PN junction such that it does not become forward-biased under normal operating conditions and the transistor 21 is prevented from saturating.
Patent GB-891421-A (GB)
Title: Purified silica sols
IPC: C01B33/143
Filed: 1959-10-27
Abstract: A pure silica sol results from the reaction of an aqueous solution of alkali-metal silicate with sufficient amounts of sulphurous acid and glyoxal to remove all the alkali-metal content of the solution as a bisulphite-glyoxal complex.  Methyl, ethyl and isopropyl alcohols, acetone, glycols, dioxane and methyl acetate aid the separation of the complex.ALSO:An alkali-metal bisulphite glyoxal complex is formed when an aqueous solution of alkali-metal silicate is treated with the stoichiometric proportions of sulphurous acid and glyoxal.  It is suggested that the alkali-metal is neutralised by the glyoxal bisulphite complex <FORM:0891421/IV (b)/1>
Patent GB-1357727-A (GB)
Title: Method of and apparatus for the manufacture of mudguards
IPC: B21D19/12
Filed: 1970-07-28
Abstract: 1357727 Making mudguards; angular bending SPEEDMID Ltd 27 July 1971 [28 July 1970] 36406/70 Headings B3A and B3E [Also in Division B7]  A mudguard is made by winding a strip whilst under tension on to an arcuate die 15 having a convex face 17. The longitudinal edges and one or both end edges of a mild steel blank are first curled by dies over a metal wire (106) (Figs. 8- 11, not shown). One end of the beaded strip is positioned between the convex die face 17 and a block 48 of a gripper 20 having a face 48a complementary to the die face 17 and pivoted by a pin 45 to the die 15 so that it is forced into gripping engagement with the strip when the die 15 is rotated. The other end of the strip is gripped in a gripper 21 comprising a block (33) (Fig. 5, not shown) movable towards a stationary block (32) by a piston-rod (40), which accommodates a clamping pin (42) urged towards the block (32) by a spring (42a). The strip is tensioned by moving a piston-rod 28b attached to the gripper 21 to the right, whereupon a shaft carrying the die 15 is rotated clockwise by racks 24, 25, which are moved by piston and cylinder devices 22, (23), to cause the strip to be wound on to the die face 17, the preformed beads being accommodated in grooves 19 in the die 15 The piston-rod 28b is moved to the left as the die 15 rotates. During rotation of the die 15 the clamp 20 moves past a pivoted pawl (49) (Fig 7, not shown) which is urged clockwise by a spring (52). After the mudguard has been formed, the die 15 is moved anticlockwise causing the pawl (49) to engage and pivot the clamp block 48 to release it from the mudguard. A number of dies 15 may be mounted on the shaft for simultaneously forming a number of mudguards. The wrapping of the strip on to the die face 17 may be aided by providing additional dies.
Patent GB-753650-A (GB)
Title: A method of and device for protecting metal surfaces from corrosion
IPC: C23F13/02
Filed: 1954-12-20
Abstract: 753,650. Preventing corrosion. NAAMLOOZE VENNOOTSCHAP DE BATAAFSCHE PETROLEUM MAATSCHAPPIJ. Dec. 20, 1954 [Dec. 21, 1953], No. 36717/54. Class 123(1) In the cathodic protection of metals in contact with corrosive liquids and especially in the protection of ship's plating against the action of sea water, consumable anodes are provided on the plating which, by exposing during their life an increasing surface to the water, generate a gradually increasing protective current, thus avoiding blistering of paint on the plating which would be caused by high initial currents whilst giving increasing protection as the paint coating wears. As shown in Figs. 1 and 2, the anode which is of magnesium alloy has a substantially triangular section. The inclined surfaces and the ends of the anode are coated with insulating paint leaving only the top surface b or f exposed. The anode is placed with its base a or e against the plating, a thin layer of rubber being positioned between the surfaces, and bolted in position. As the anode is consumed, the surface b or f increases in area and a correspondingly increased protective current is generated.
Patent GB-1204433-A (GB)
Title: Mounting arrangement for printed circuit boards and electrical connector assemblies
Inventor: ANHALT J W
IPC: H01R12/88
Filed: 1968-08-01
Abstract: 1,204,433. Cam-operated switches; mounting electrical equipment. INTERNATIONAL STANDARD ELECTRIC CORP. 1 Aug., 1968 [3 Aug., 1967], No. 36737/68. Headings H1N and H1R. [Also in Division H2] In a rack-mounting arrangement for printed circuit boards, Fig. 1, the boards (not shown) are edge-mounted in guide grooves 14 formed between adjacent inwardly projecting peripheral flanges 13 formed round elongate apertures 12 in side-walls 3 of the rack, the forward ends of the board being received in edge-connectors 7. End-walls 2 complete the rack, the assembly being cooled by air forced through apertures 12 by a blower 16. Each edge-connector, Fig. 2, comprises a channel-shaped housing 9 of synthetic resin material having a base-wall 21 and two sidewalls 22, a plurality of longitudinally spaced partitions 24 extending inwardly from each sidewall to define a longitudinal groove in which the contact-bearing edge of a printed circuit board 50 can be received, and also to form pockets which house the resilient contact portions 43 of contact members 36, resilient tangs 38 struck out of ferrule portions 37 of contacts 36 engaging shoulders 41 in passageways 27 in base-wall 21 in which ferrule portions 37 are located. Resilient contact portions 43, when unstressed, lie wholly between partitions 24, as shown at the right in Fig. 2, so that printed circuit boards 50 can be inserted in or removed from the edgeconnectors without friction or electrical contact. After insertion, cam-shafts 56, which are supported in concave top faces 28 of portions 24 of adjacent connectors, are rotated through 90 degrees so that cam surfaces 58 engage nodules 47 at the ends of contact portions 43 and press contact nodules 44 into conductive engagement with the contacts on boards 50, as shown at the left in Fig. 2. The ends of cam-shafts 56 are journalled in support-bars 8 (Fig. 1) and are ganged for simultaneous actuation by a drive plate 62, Fig. 5, movable longitudinally by a rack and pinion 69, 71, each cam-shaft being provided with a bell-crank 64 pivotally located in a vertical slot 67 in plate 62. In place of printed circuit boards, the edgeconnectors may co-operate with plug-blades 49 (Fig. 5) having flat contact portions 52.
Patent GB-1077728-A (GB)
Title: Improvements in the production of polyvinyl fluoride
IPC: C08F14/20
Filed: 1965-08-26
Abstract: A two-stage rate controlling process for polymerizing vinyl fluoride comprises nucleating polyvinyl fluoride particles in a first reaction zone and then polymerizing the bulk of the vinyl fluoride in a second reaction zone, the nucleation being carried out for a time such that the rate at which polymer is formed in the second zone is independent of the rate of nucleation. Preferably 25 to 50% of the total of each of a water-soluble initiator stream, a water stream and a vinyl fluoride stream are continuously passed into the first reaction zone, in which polyvinyl fluoride particles are continuously nucleated until no more than 1% total solids are formed, the nucleated polyvinyl fluoride stream is removed therefrom and combined with the remainder of the initiator stream, water stream and vinyl fluoride stream and the combined stream is passed into the second reaction zone.  The temperature and pressure in the second reaction zone are higher than those in the first reaction zone.  Conventional free-radical catalysts are used.
Patent GB-1517277-A (GB)
Title: Display apparatus
IPC: G09F15/00
Filed: 1975-09-04
Abstract: 1517277 Display devices ACME CONVEYORS & CONSTRUCTION Ltd 4 Sept 1975 [22 Aug 1974] 36902/74 Heading G5C Display apparatus for use as race tracks has a support structure with spaced uprights 11, 12, 13, 14 between which display boards are removably mounted in means sush as 24, 26 for movement in guides 21a, and 21, 22, 22a between a loading and a display position by means of motors 29 mounted on cross-pieces 15, 16, 17, the boards being by ropes passing over a respective drum 30. Control means for the motors include brakes and limit switches at the upper and lower positions, and a manual over-ride in the form of a chain drive to the motor shaft is included.
Patent GB-1321121-A (GB)
Title: Photographic camera having a photochromic light modulating device
IPC: G03B17/12
Filed: 1970-07-31
Abstract: 1321121 Uses of photochromism EASTMAN KODAK CO 31 July 1970 [1 Aug 1969] 37099/70 Heading C4S [Also in Division G2] A camera has a plurality, e.g. three as shown, of photochromic elements 31, 32, 33 each movable from a position in which they are superimposed in front of a camera objective 14 to a position in which they are spaced laterally from the objective and from each other for direct exposure to scene illumination. The elements are initially positioned as shown, and an impact shutter blade 34 covers the objective. Operation of shutter release 43 in a vertically downward position allows lever 49 under action of spring 53 to engage and pivot blade element 18 carrying photochromic elenent 31. A stud 54 on blade element 18 engages blade elements 19, 20 in turn until all photochromic elements are aligned with objective 14. Thereafter impact member 45 operates upon shutter blade 34. The front wall of the camera contains an aperture for each of the photochromic elements.
Patent GB-916026-A (GB)
Title: Stator electrode units for adjustable rotary condensers
Filed: 1960-10-28
Abstract: 916,026. Variable capacitors. OXLEY, R. F. Oct. 30, 1961 [Oct. 28, 1960], No. 37208/60. Addition to 825,656. Drawings to Specification. Class 37. Relates to a stator electrode unit for an adjustable rotary capacitor of the type including a solid integral electrode 1 manufactured by forming a series of parallel slots transversely across a solid metal bar of suitable cross-section (Fig. 2), to provide a series of parallel electrode plates 2 integral with one another and joined to one another over at least a part of their edges, for example by ribs 3 and 4. According to the invention anchoring studs 7 are provided which extend from one end of the electrode in a direction generally perpendicular to the planes of the plates, and the plate 2(a), at one end of the stator electrode, is of greater thickness than the remaining plates. The studs may be rigidly attached to the electrode unit end-plate, for example by soldering, as shown in Fig. 1, where wire 7 is soldered to plate 2(a) at position 6; or they may be formed integrally with the electrode (Figs. 3 and 4, not shown). The studs are for the purpose of securing the electrode to an insulating base, while the thicker end-plate gives the structure added rigidity.
Patent GB-921879-A (GB)
Title: A method of moulding a belt supporting device
IPC: B29C45/14
Filed: 1960-10-31
Abstract: 921,879. Moulding belt supporting rollers. JOY MANUFACTURING CO. Oct. 31, 1960 [Nov. 3, 1959], No. 37284/60. Class 87(2). [Also in Group XXX]. An idler roller is moulded by positioning a steel wire 22 in three two-part moulds 10, 6, 12 by means of collars 26, Fig. 3, and then injecting, e.g. Neoprene, into the mould to form the roller parts 9. The collars are integrally moulded into the roller. Alternative forms of collars which may be of brass or bronze are described with reference to Figs. 5 and 6 and 7 (not shown). End sleeves 18 are swaged to the wire and project into the mould cavities. Specification 855, 838 is referred to.
Patent GB-1198815-A (GB)
Title: Catalytic Hydroformylation of Olefins
IPC: C07C45/50
Filed: 1967-08-16
Abstract: 1,198,815. Catalytic hydroformylation of olefins. GULF RESEARCH & DEVELOPMENT CO. 16 Aug., 1967 [23 Aug., 1966 (8)], No. 37574/67. Heading C2C. Aldehydes (and alcohol by-products) are obtained by subjecting an olefin to hydroformylation with hydrogen and carbon monoxide at an elevated temperature and pressure to obtain an aldehyde having one more carbon atom than said olefin, wherein as catalyst in said hydroformylation there is used a cobalt carbonyl and an additive which is: (A) a dioxaphosphacyclohexane selected from 2,4,6- tris - (alkyl) - 1,3 - dioxa - 5 - phosphacyclohexanes and 2,4,6-tris-(aryl)-1,3-dioxa-5-phosphacyclohexanes having the formula wherein R 1 , R 2  and R 3  are the same or different and are straight or branched chain C 1-16  alkyl or are C 6-22  aryl and X is selected from hydrogen, fluorine, chlorine, bromine, iodine, aryl, alkyl, acyl, alkylcarbamyl and aryl carbamyl; (B) a trioxaphospha - adamantane selected from 1,3,5,7 - tetra - (alkyl) - 2,4,8 - trioxa - 6 - phospha - adamantanes and 1,3,5,7 - tetra- (aryl) - 2,4,8 - trioxa - 6 - phospha - adamantanes of the formula: wherein R 4  is a straight or branched chain C 1-16  alkyl group or a C 6-22  aryl group; (C) a phosphine selected from dialkyl- and diarylhalophosphines of the formula: wherein R 5  and R 6  are the same or different and are C 1-16  alkyl or C 6-16  aryl and X 1  is a halogen; (D) a trioxaphosphinobicyclooctane selected from 1,3,5,8 - tetra - (alkyl) -, tetra - (aryl) - or tetrahydro - 2,6,7 - trioxa - 4 - phosphabicyclo-[2,2,2]-octanes of the formula wherein R 1 -R 4  may also be hydrogen; (E) a trioxa - diphospha - bicyclooctane selected from 3,5,8-tri-(alkyl)-, tri-(aryl)- or tri-(hydro)- 2,6,7 - trioxa - 1,4 - diphospha - bicyclo - [2,2,2]- octanes of the formula: wherein R 1-3  may also be hydrogen; (F) a trioxa-phosphitebicyclooctane selected from 4- alkyl-, 4-aryl-, or 4-hydro-2,6,7-trioxa-1-phosphabicyclo - [2,2,2]-octanes and derivatives thereof substituted in positions 3, 5 or 8 with an alkyl or aryl group of the formula: wherein R 1-4  may also be hydrogen; (G) a diphosphine of the formula: or (H) a trialkylamine having a pKa acidity of at least + 8 but not greater than +15. Depending on the nature of the catalyst, the reaction may be effected at a temperature of 66-246 C. and a pressure of 35-300 kg. cm.<SP>2</SP> gauge. The trialkylamine additive (H) may be substituted by a substituent selected from aldehyde, alcohol, chlorine, fluorine, naphthyl and phenyl groups. As stabilizer against catalyst decomposition, a trialkylamine having a pKa acidity of from + 8 to +15 may also be added to the above additives (A)-(G) and said trialkylamine may also be substituted by an aldehyde, alcohol, chlorine, fluorine or phenyl group.
Patent GB-1355870-A (GB)
Title: Water cooled measuring probe for continuously measuring the tem perature of hot liquid metal baths in basic oxygen converters
IPC: G01K7/04
Filed: 1971-08-11
Abstract: 1355870 Thermocouples VEREINIGTE OSTERREICHISCHE EISENUND STAHLWERKE AG 11 Aug 1971 [17 Aug 1970] 37743/71 Heading H1K A water cooled thermocouple probe comprises a body provided with water circulation channels and terminating in a head portion forming a forward facing shoulder with the main body, a sensing unit joined to the head portion, and a refractory jacket releasably attached to the probe and surrounding the head portion and sensing unit. As shown, Fig. 1, the device comprises a main body 1 and a head portion 2 both of which are cooled by water circulating in concentric channels. A sensing unit 3 is secured to the end of the head portion 2 by a nut 4 and is connected to a compensating line 16 by a plug and socket connection 17. The head portion 2 and sensing unit 3 are surrounded by a refractory jacket 19 which is releasably attached by a bayonet catch 18. A refractory element 20 is provided to prevent penetration of liquid metal and slag between the refractory jacket and the shoulder of the probe. In a modification, Fig. 2 (not shown) the diameter of the main body is larger than that of the jacket and ends in a conical slope to the shoulder to provide a smooth transition. This structure may be further modified by forming the shoulder with a slightly conical surface, the end of the refractory jacket being correspondingly shaped, Fig. 3 (not shown).
Patent GB-889615-A (GB)
Title: Method and apparatus for processing metals
Inventor: STERLING HENLEY FRANK
IPC: C30B15/10
Filed: 1957-12-04
Abstract: A metal is zone-melted directly by induction in a water-cooled silver crucible.  Steel, hafnium, molybdenum, tungsten, and tantalum may be zone-refined.  Small pieces of uranium, zirconium, titanium, nickel, iron, aluminium, gadolinium, praseodymium, dysprosium, and yttrium may be formed into ingots.
Patent GB-1140923-A (GB)
Title: Telescopic conveyor
IPC: B65G15/26
Filed: 1967-08-16
Abstract: 1,140,923. Conveyers. RAPISTAN Inc. 16 Aug., 1967 [17 Aug., 1966], No. 37810/67. Heading B8A. Height adjustment assemblies 70 of supports 60 for a telescopic roller conveyer have lock assemblies 80 which are able to move to the right as viewed in Fig. 4, but which lock once legs 64, 65 of supports 60 begin to spread. In operation, as a lower conveyer section 30 is extended to lengthen the conveyer, the points along the conveyer at which the supports 60 are positioned, rise. The non-locking action of the assemblies 80 allows wheels 63 of the supports to remain in contact with the floor, however. When goods pass along the conveyer, their weight tends to cause legs 64, 65 to spread but this is prevented by the locking action of the assemblies 80. When the conveyer section 30 is pushed back, the assemblies 80 initially remain locked but, due to the provision of roller pivot mounts 50 between the sections of the conveyer, section 30 begins to pivot downwardly and this movement disengages the associated assemblies 80. The height of the supports 60 is thus reduced to permit complete retraction of the conveyer. Means are provided, Figs. 9, 10 (not shown), to ensure that the section (30) may be fully extended prior to when a middle section (20) begins to be extended with respect to a section (10).