baber/WOPTO huggingface dataset:
Patent GB-1359490-A (GB)
Title: Method of manufacturing a fluorescent screen of a colour televi sion picture tube
IPC: C08K5/57
Filed: 1971-09-14
Abstract: 1359490 Colour television tubes HITACHI Ltd 14 Sept 1971 42866/71 Heading H1D A method of manufacturing a colour TV tube fluorescent screen in which phosphor dots are formed using a shadow mask includes applying a photosensitive coating, e.g. pva. with ammonium dichromate, on the inner faceplate surface; exposing to light through the shadow mask perforations and removing portions not exposed to light, shrinking the remaining spots to reduce their area, "shrinking" meaning shrinking of the complete spots, rather than chemical removal of their edges, waterproofing the shrunk spots, applying a non-luminous substance (e.g. graphite) over the entire inner surface, removing the shrunk spots with their non-luminous coating; and thereafter forming phosphor dots corresponding to the shrunk spots by light exposure through the perforations of the shadow mask. Shrinking may be by treating the spots, while still wet and swollen, with a suitable organic or inorganic salt, e.g. 5% by wt. ammonium sulphate or sodium acetate for about 1 minute. The spots are restored when wetted by water or an aqueous solution so are waterproofed by heating to 80‹ to 100‹ C. Preferably, 0.2% by wt. of a photosensitive bonding agent for pva., e.g. ammonium bichromate, may be incorporated in the photosensitive material, the shrunk spots being irradiated with uv. or electrons to waterproof same. Dimensions of dots and mask perforations are given. The screen is cleaned, ammonia in an aqueous solution of potassium silicate with 5% graphite to prepare solution of pH 10.4 to 10.6, is applied, immersed in hydrogen peroxide which permeates the graphite causing it to swell and embrittle the spots which peel off under a warm water jet. Dots may be Red, Green, Blue. The electron beam area equals that of original coatings 12, 13, 14, i.e. corresponding to the phosphor dots 16, 17, 18 but is larger than the effective crosssectional area of the phosphor dots as viewed from the front side.
Patent GB-1518519-A (GB)
Title: Production of silver powders
IPC: B22F1/00
Filed: 1975-10-20
Abstract: 1518519 Production of silver powder MONTEDISON SpA 20 Oct 1975 [22 Oct 1974]  43014/75 Heading C7D Ag powder is produced by reducing an aqueous suspension of Ag 2 O at 60-115‹C with H2 at a partial pressure of 5-25 atm. The apparent density of the powder is from 0À3-3À0 g/cc. If a powder of low apparent density (say 0À3-1À0 g/cc) is required, one or more sulphides of an alkali metal, alkaline earth metal, or silver is added to the suspension in an amount equivalent to 15-50 mg S per 100 g Ag as oxide (if silver sulphide is added, it may be as a colloidal solution in ammoniacal silver sulphate). For a powder of higher apparent density (e.g. 1-3 g/cc), the suspension contains a soluble Ag salt or a soluble Ag complex, e.g. ammoniacal silver sulphate or ammoniacal silver nitrate, (to give 100-1000 g Ag per 100 g Ag as oxide), or Ag NO 3  (to give 0À5-5 g Ag per 100 g Ag as oxide). The reduction preferably takes place in an autoclave with a stirrer. Examples are given of the production of powders of apparent density ranging from 0À46-2À75 g/cc.
Patent GB-1170641-A (GB)
Title: Punch Alignment Mechanism for Business Forms Machine
IPC: B26F1/02
Filed: 1967-09-21
Abstract: 1,170,641. Punching-apparatus. HARRIS INTERTYPE CORP. 21 Sept., 1967 [19 Dec., 1966], No. 43096/67. Heading B4B. The file hole punch of a business forms machine comprises punch and die cylinders 40, 42, Fig. 1, having keyed to the shafts thereof intermeshing gears 95, 96 which are driven from a main drive gear 80 through an intermediate gear 85 mounted on a slidable shaft 88, Fig. 2, the web 10, Fig. 1, to be punched being guided through the punch by means of rollers 25, 28, 48 and 50, the rollers 28 and 50 being pivotally mounted on worm gears 30 and 52 driven by worms 32 and 53 operable by handles 35 and 55, the arrangement being such that by pushing the shaft 88 axially by means of a handle 90 so that the gear 85 is moved from the full line position, Fig. 2, to the dotted line position, the gears 95, 96 can be rotated to provide a coarse adjustment for aligning the punch with respect to the cross-perforations connecting the successive forms to one another, a fine adjustment being obtained by rotating the handles 35 and 55, Fig. 1, whereby the web is moved relatively to the punch. The shaft 88 is clamped in each of its positions by means of a split clamp 92 operable by a rotatable handle 94. The punch can be adjusted laterally of the web by means of a handle 72. Marginal holes are punched in the web by means of punch and die cylinders 20 and 22, Fig. 1. The web then passes to a unit 15 in which cross-perforations are formed in the web and the web split into ribbons 10a. 10b and 10c.
Patent GB-1372524-A (GB)
Title: Method of jointing book leaves and book sections
IPC: B42B2/02
Filed: 1971-09-16
Abstract: 1372524 Yarns W C HELLER JNR 16 Sept 1971 [22 Sept 1970] 43170/71 Heading D1W [Also in Division B6] A number of leaves are sewn together to form a book section by means of a thread which when subjected to indirectly applied energy i.e. an alternating electric or magnetic field, becomes heated to cause bonding material to become adhesive so as, together with the sewing, to join the leaves. The bonding agent may be applied to the leaves prior to, or after sewing, or may be incorporated on the thread. As an example of the latter arrangement, the thread may consist of a filament of a dielectric material e.g. polyvinyl chloride which is heated when exposed to an alternating electric field, or may comprise a filament coated with such material, the material forming the bonding agent when rendered thermoplastic by the heating. The thread 18, Figure 3 may be made heatable by dispersing in the bonding material 28 or impregnating the thread with particles 30 of iron oxide, metal, or ferrite which when subjected to an alternating magnetic field become heated. The bonding material may be a thermoplastic e.g. a water emulsion of ethylene vinyl acetate, or a thermosetting material e.g. an epoxy. In Figure 4, the sewn leaves are placed with the fold between two coils 32 energised by an alternating current from a source 34 to set up a magnetic field. The coils may be mounted on supports 38 serving as pressure platens. During the heating and pressure operation, the stitches become fused together and bonded to the sewing holes and to the leaf portions between the holes. Reference has been directed by the comptroller to Specification 1220573.
Patent GB-993600-A (GB)
Title: Stabilised polymers
IPC: C08K5/29
Filed: 1963-11-05
Abstract: A composition comprises (a) a polyoxymethylene including a homopolymer of trioxane which may be acylated or alkylated having a molecular weight of at least 10,000 or a copolymer of molecular weight at least 10,000 of trioxane and 1,3-dioxolane, 1,3-oxothiolane, ethylene oxide or a derivative thereof, styrene, a vinyl ether or acrylonitrile, and (b) an aliphatic, cycloaliphatic, araliphatic or aromatic mono- or poly-carbodiimide. Additionally the composition may comprise a polyamide such as polyhexamethylene adipamide or the N-methylolmethyl ether of poly-e -caprolactam, a polyurethane such as the reaction product of hexamethylene diisocyanate and butane-1,4-diol or thiuram sulphides such as tetramethyl thiuram disulphide and bis(N-methyl-N-phenyl)thiuram disulphide.
Patent GB-871484-A (GB)
Title: Plunger type switch and method of mounting the same in an aperture in a support
IPC: H01H3/16
Filed: 1959-12-23
Abstract: 871,484. Switch cases. UNITED-CARR FASTENER CORPORATION. Dec. 23, 1959 [Dec. 30, 1958], No. 43781/59. Class 38 (5). [Also in Group XXV] A door-operable switch 1 for mounting in an aperture 4 in a support 5 has its body provided with a series of peripherally-spaced rows of teeth 2 which are engageable with the support. The switch is mounted by entering it into the aperture and then shutting the door 7, thereby causing the switch to be pushed home in the aperture. If the support is not parallel to the operating edge of the door, the front of the switch may be shrouded by a resilient skirt, Fig. 3, to give a neat appearance. The teeth 2 may be staggered to give a screw-like thread, so that the switch may be unscrewed for repair or replacement.
Patent GB-874508-A (GB)
Title: New anthraquinonoid dyestuffs
Inventor: HESLOP ROBERT NORMAN
IPC: C09B62/08
Filed: 1959-12-24
Abstract: The invention comprises dyestuffs of the formula:- <FORM:0874508/IV(c)/1> and a process for making them by reacting an aminoanthraquinone of the formula:-  <FORM:0874508/IV(c)/2> or a mixture of such aminoanthraquinones with one molecular proportion of cyanuric chloride.  Specifications 798,121, 824,120, 826,375, 826,376, 838,312, 838,334, 838,336, 838,339, 842,933, 869,150 and 871,709 also are referred to.
Patent GB-1087690-A (GB)
Title: Cobalt alloys
IPC: C22C19/07
Filed: 1966-09-30
Abstract: A cobalt based alloy having high strength and damping capacity consists of:-  <TABS:1087690/C6-C7/1> The alloy may be quenched in oil or water from 950 DEG  - 1050 DEG C. and aged at 450 DEG  - 650 DEG C.
Patent GB-1105406-A (GB)
Title: Improvements in level shifting circuits
IPC: H03F3/34
Filed: 1966-10-03
Abstract: 1,105,406. Voltage level shifting circuit. INTERNATIONAL BUSINESS MACHINES CORPORATION. 3 Oct., 1966 [10 Nov., 1965], No. 44001/66. Heading H4R. A circuit for shifting the voltage level of a signal in a transmission line between a source E s , Fig. 3, and a load R 1 ,comprises a # network of resistors R 1 , R 2  and R 3 , with the shifting voltage derived from two sources E 1  and E 2  which are connected in series-with the shunt resistors R 1  and R 2 . The voltage sources may be applied via emitter followers, Fig. 6 (not shown) or, if the shifting voltage is an A.C., the sources may comprise the sections either side of a tapping in the secondary of a transformer, Fig. 7 (not shown). The values of the resistors R 1 , R 2  and R 3  follow the normal # network theory, i.e. R 1 =R 2 =Z o K+1/K-1;  R 3 =Z 0 K<SP>2</SP>-1/2K; where K=-E 2 /E 1  ; E 1 = -2E 0 K/(K-1)<SP>2</SP>; and E 0  is the shift in output voltage relative the input. voltage.
Patent GB-914184-A (GB)
Title: Improvements in or relating to navigational computing apparatus
Inventor: PEARSON MICHAEL GEOFFREY
IPC: G01S1/02
Filed: 1959-12-28
Abstract: 914,184. Course-recording apparatus. DECCA Ltd. Dec. 20, 1960 [Dec. 28, 1959], No. 44002/59. Drawings to Specification. Class 97 (2). [Also in Group XL (c)] In an arrangement for recording the track of a craft in accordance with the computed cartesian co-ordinates and y of the craft as disclosed in Specification 914,185, x and y are computed according to the equations where h o , h 1 , h 2  are the ranges of the craft from three spaced points of known location as determined by known radio means (see Group XL (c)) and A 1 , A 2  . . . D 2  are constants depending on the positions of the points.
Patent GB-1046874-A (GB)
Title: Improvements in or relating to discharge valves
IPC: F16K31/60
Filed: 1963-11-08
Abstract: 1,046,874. Valves. A. PIEL Nov. 8, 1963 [Nov. 13, 1962], No. 44205/63. Heading F2V. A discharge valve comprises a sleeve 1 for fitting into a vessel and a plug 4 slidable in the sleeve and having a port (not shown) in the side wall which permits flow when the plug is moved outwards of the sleeve. The plug 4 is formed of plastics material and has an annular rib 6 of larger diameter than the sleeve to provide a seal when the plug is in the sleeve. A pull handle 10 is pivoted to the plug so that the handle is folded away and covered by a shield 12 when the valve is closed.
Patent GB-1068560-A (GB)
Title: Improvements in and relating to mobile machines for moulding concrete on the ground
IPC: B28B1/08
Filed: 1963-11-11
Abstract: 1,068,560. Casting kerbs. A. H. CHENEY. Nov. 11, 1963 [Nov. 9, 1962], No. 44433/63. Heading E1S. [Also in Division G3] A vehicle carries a concrete mould 31 more particularly for moulding kerbs which is mounted on a vertical frame 27 on which the mould is adjusted for height by means of a datum line rail 100 adapted to be engaged by a roller 99 which through micro switches and an hydraulic valve operate a motor 37 operating a screw 36 to move the mould vertically on the frame 27 also the vehicle hydraulic steering mechanism 52 is similarly controlled by a roller 109 side flanges of which engage one side or the other of the rail 100. The frame 27 is pivotally mounted on the vehicle at the bottom and is tilted to compensate for lateral tilting of the vehicle by an hydraulic motor 40 at the top controlled by a pendulum 119, microswitches &c. The mould is mounted on the frame 27 by means of a turntable 43 on which it is adapted to be turned about an horizontal axis to compensate for pitching of the vehicle, by a screw 44 operated by a motor 45 controlled by rocker arms 126, 125 mounted fore and aft of the vehicle respectively and adapted to engage the rail 100. The mould is vibrated and the vehicle and supply screws 83 for the mould driven hydraulically.
Patent GB-1524378-A (GB)
Title: Illumination systems in electrophotographic printing machines
IPC: G03G15/043
Filed: 1975-10-29
Abstract: 1524378 Photo-copying apparatus XEROX CORP 29 Oct 1975 [10 March 1975] 44656/75 Heading G2A In electro-photographic copying apparatus, an original is illuminated by light sources 74, 76 (which may be xenon lamps) which are periodically energized so that alternately one lamp is energized and the other de-energized. A power supply 70 is connected to mains terminals 72 and supplies short pulses at high recurrence frequency to energize lamps 74, 76. Pulses are supplied to lamp 76 through a delay circuit 78 such that pulses reach lamp 76 between the pulses supplied to lamp 74 directly. The photo-copying apparatus may be a known electrophotographic colour copying apparatus, Fig. 1 (not shown).
Patent GB-1241400-A (GB)
Title: Optical brightening of cellulose textiles
IPC: D21H21/32
Filed: 1968-08-02
Abstract: 1,241,400. Treating textiles. J. R. GEIGY A.G. 2 Aug., 1968 [3 Aug., 1967], No. 44884/ 70. Divided out of 1,239,818. Heading D1P. [Also in Division C3] Optical brighteners for application to cellulosic textiles from acidic baths comprise compounds of the formula in which R 1  and R 2  are hydrogen or C 1-4  alkyl, hydroxyalkyl or alkoxyalkyl radicals, R 3  is hydrogen, C 1-6  alkyl or halogen and M<SP>+</SP> is hydrogen, an alkali or alkaline earth, optionally substituted ammonium or aluminium cation. Specified substrates are cotton, staple fibre and rayon. The aqueous bath may have a pH as low as 1 and preferably contains 0.01-10g brightener per 1. Brightening is generally combined with the application of a crease-resisting finish by the moist cross-linking process using resin precondensates and acid catalysts. Examples describe the application to cotton of an optical brightener and a dimethylol hydroxy propylene urea or dimethylol propylene urea precondensate.
Patent GB-1472521-A (GB)
Title: Single row ball bearings
IPC: F16C33/61
Filed: 1975-10-30
Abstract: 1472521 Bearings HOESCH WERKE AG 30 Oct 1975 [19 Dec 1974] 44974/75 Heading F2A A single row radial ball bearing comprises only two bearing race elements made from profiled material and accommodated in undivided inner and outer bearing rings 10, 11, the radius R2 of the bearing surface of each element being always greater than the radius R 1 of the balls such that there is two-point contact. The bearing rings may be made of light metal or alloy and the race elements of hardened steel. A method of assembling the bearing comprises initially assembling the balls, a spacer 18, the race elements, and the outer ring 11, and then snapfitting the inner ring 10 into its associated race element. The snap-fitting process is facilitated by the engagement of a rounded portion 21 on the element with a chamfered portion 20 on the ring. If the inner ring is cooled or the outer ring is warmed before assembly, the bearing will be pre-stressed. In a further embodiment (Fig. 2, not shown), the surfaces of the race elements remote from the bearing surfaces are convex.
Patent GB-1399394-A (GB)
Title: Method and apparatus for correcting longitudinal misre gistration in a multistation printing press
IPC: B41F13/02
Filed: 1972-09-29
Abstract: 1399394 Registering webs J BOBST & FILS SA 29 Sept 1972 [8 Oct 1971] 45085/72 Heading B8R [Also in Division G3] Longitudinal misregistration in a multistation, web-fed printing press is corrected by determining the registration error downstream of a downstream station, calculating the web tension between the downstream and an upstream station necessary to correct the error, and controlling the web tension between these two stations accordingly. Misregistration is sensed by a device 12 and a computer C calculates from a particular error signal e i , the summation of error signals and the difference between the successive error signals the required correcting tension Tc. The actual tension Tm measured by a sensor 13 is subtracted from Tc in a regulator 2 and the resulting signal fed via a limiting device to an actuator 3 which moves roller 20 to vary the web tension. In an alternative embodiment in which the sensor 13 is dispensed with, the change in elongation of the web is calculated from the rate of change of registration error at the locations of two sensors (41), (42), Fig. 8 (not shown), and from the change of position of the roller 20 sensed at (43), the elongation change being proportional to web tension and equivalent to Tm. In a third embodiment the sensor 13 is replaced by a tension source, Fig. 6 (not shown), which imposes a tension, equivalent to Tm, on the web. The tension sensor may be in the form of a spring urged roller (52), Fig. 9 (not shown), around which the web is looped and to which an induction sensor (60) is connected.
Patent GB-1184979-A (GB)
Title: Potentiometer with Frictional Slide
IPC: H01C10/38
Filed: 1968-09-25
Abstract: 1,184,979. Variable resistors. STACKPOLE CARBON CO. 25 Sept., 1968 [12 Oct., 1967], No. 45502/68. Heading H1S. A linear potentiometer has spaced parallel resistor and collector strips bridged by a contact carried by a manually operable slide projecting through a slot in the casing and carrying a portion pressing resiliently against the outside of the case to resist movement of the slide. As shown, the two strips are bridged by a wire coil 13 projecting at opposite sides from a frame 12 integral with the slide 5 having a projecting operating member 16. A member 18 is connected to the slide by a resilient portion 19 and has chamfered corners 17 which normally engage the sides of a groove 2 formed in the top of the casing, but can be freed to permit movement of the slide by pressing a lug 21 against the member 16. Another embodiment has two parts similar to 18, projecting in opposite directions in the groove 2. In a third embodiment, the slide has portions in continuous resilient frictional contact with the side-walls of the groove 2. The casing may be made in two halves with a longitudinal joint.
Patent GB-1178131-A (GB)
Title: Bearing Assembly
Inventor: MORRIS CHARLES WILLIAM
IPC: F01N3/32
Filed: 1967-10-05
Abstract: 1,178,131. Bearings ; lubricating. C. W. MORRIS. 5 Oct., 1967 [26 Oct., 1966], No. 45535/67. Heading F2A. [Also in Division F1] A bearing assembly comprises a shaft 45 mounted by a bearing 71 in a housing and having its ends in respective zones 66, 55 at different air pressures, a seal 80 sealing the bearing from the higher pressure zone 66, an air passage allowing communication of the higher pressure zone with a lubricant reservoir 100, a lubricant passage connecting the reservoir with the end of the bearing adjacent the seal. In the unit of Figs. 3 and 4 shaft 45 carries a turbine 51 driving a blower 61. Seal 80 comprises a sleeve 81 surrounding the shaft with axially spaced projections 83, 84 engaging the housing. Relatively high pressure air enters impeller inlet 31 and passes via passages 33 (Fig. 3) and nozzle 59 to impinge on the turbine blades, exiting to the low pressure region via outlet 41. Blower 61 supplies air to chamber 63 having an outlet 64 (Fig. 4). Some air in the inner portion of chamber 63 which is relatively cleaner due to centrifugal action passes through openings 91, membrane 92 and passages 97, 87 to the space between the projections of the seal and prevents impure air from chamber 63 entering bearing 71. Some air from passage 97 passes via check valve 103 into lubricant reservoir 100 and displaces lubricant through restriction 110 containing a membrane, and through passage 114 to the bearing. The lubricant passes through the bearing to the low pressure region.
Patent GB-1479198-A (GB)
Title: Process for the manufacture of crystalline propylene-ethylene-butene-1 terpolymers
IPC: C08F4/60
Filed: 1974-10-22
Abstract: 1479198 Propylene-ethylene-butene terpolymers CHEMISCHE WERKE HULS AG 22 Oct 1974 [23 Oct 1973] 45562/74 Addition to 1473416 Heading C3P A crystalline propylene-ethylene-butene-1 terpolymer containing up to 10% by weight of ethylene units and up to 10% by weight of butene-1 units is prepared by low pressure polymerization of the monomers, with up to 10% by weight of ethylene relative to the propylene being used, at a temperature up to 100‹ C. in butene-2 or a C 4  cut containing butene-2 said butene-2 or C 4  cut containing 0À1 to 2À5% by weight of butene- 1 using as catalyst a mixture of (a) TiCl 3  or TiCl 3 nAlCl 3  where n is 0À2 to 0À6 and (b) a chlorine containing organo aluminium compound. In the examples ethylene is added continuously, in one batch a few hours after the start of polymerization or at intervals during the polymerization to a polymerization system of propylene, hydrogen, a C 4  cut containing butene-1, cis and trans but-2-ene, isobutene and butane, TiCl 3  0À33 (or 0À5) AlCl 3  and AlEt 2 Cl, added as such or formed in situ from AlEt 3  and AlEtCl 2  and the polymerization is terminated by the addition of water or methanol or with steam. In comparative examples ethylene is added after the polymerization of propylene is complete to form block copolymers and hexane is used as the reaction medium.
Patent GB-1351822-A (GB)
Title: Polymerisation catalyst and its use in the preparation of polymers
IPC: C08F4/60
Filed: 1971-09-30
Abstract: 1351822 Organo-aluminium chloride or bromide complexes micropulverized with titanium trichloride MITSUI PETROCHEMICAL INDUSTRIES Ltd 30 Sept 1971 [2 Oct 1970] 45640/71 Headings C2C and C2P [Also in Division C3] Aluminium chloride or bromide is reacted with, as electron-donor, an organic compound of nitrogen, oxygen or phosphorus to form a 1 : 1 complex. The product may then be micropulverized with titanium trichloride, although the nature of the product of this procedure is not clear. In examples the donors are diphenyl ether, anisole, diethyl ether, benzophenone, phenyl methyl ketone, methylbenzoate, triethylamine,N,N-dimethylaniline, pyridine, hexamethylphosphoramide, triphenylphosphine, nbutyl acetate, methyl ethyl ketone, tri-n-butyl phosphine and tri-n-butyl-phosphite