baber/WOPTO huggingface dataset:
Patent GB-1332391-A (GB)
Title: Pulse voltage regulators
IPC: H02J7/24
Filed: 1971-09-03
Abstract: 1332391 Automatic voltage control PAL MAGNETON NARODNI PODNIK 3 Sept 1971 [ 4 Nov 1970] 41255/71 Heading G3R The output of a D.C. generator or alternator is controlled by a transistor switching circuit forming a pulse voltage regulator. In the circuit shown, a generator G is connected across a vehicle battery B and has a power transistor T3 connected in series with its excitation winding M. A circuit VO senses the voltage across the battery and generator and has an output terminal connected to the base of a transistor T1. When the system voltage is below a predetermined level, transistor T1 is non- conductive, so that a second transistor T2 receives no base current and the power transistor T3 conducts to energise the winding M of the generator. Current also flows through a feedback path comprising a resistor R5 and reactive impedance element Z to hold transistor T1 in the blocked condition. If the system voltage exceeds the preset value, the circuit VO turns on transistor T1, so that transistor T2 diverts base current from the power transistor T3 and the winding M is de-energised. During operation, the winding is thus supplied with a series of pulses. The impedance element Z stabilises the pulse frequency.
Patent GB-1136068-A (GB)
Title: Multiple filter making machine
Inventor: SEXSTONE JOHN HENRY
IPC: A24D3/02
Filed: 1967-09-11
Abstract: 1,136,068. Making multiple tobacco smoke filters. BROWN & WILLIAMSON TOBACCO CORP. 11 Sept., 1967, No. 41432/67. Heading A2C. In an apparatus for making multiple tobacco smoke filters containing an adsorbent granule section between two filter plugs, a continuous spaced series of filter plugs A, B is fed from a dual filter making machine (such as the Molins D.A.P.T.C. machine described in Specification 915,203) on a wrapper paper web 18 running in an elongated trough 28 and pass beneath an elongated slot (48) formed in a bar 50 down which activated charcoal granules are flowed to fill the spaces between the plugs A, B. Prior to completing the folding and seam pasting of the wrapper 18, surplus granules are cleaned off by a rotating brush 54, the brush 54 being continuously freed of granules by a vacuum cleaner 56. The elongated slot (48) is fed with granules from a hopper 42, the granules being kept at a predetermined level therein by a feed mechanism (46) controlled by a photo-electric device 44. The plugs A, B are tacked in position on the wrapper web 18 with adhesive, or by heat if a thermoplastic coated wrapper is used, before the carbon granules are deposited thereon. The continuous multiple filter rod formed is subsequently cut into lengths in conventional manner. Other granules, such as granular alumina or silica gel may he used.
Patent GB-1404033-A (GB)
Title: Producing conductive electrode patterns on surfaces
IPC: H01L21/288
Filed: 1972-09-07
Abstract: 1404033 Anodizing platinum; electrodeposition of gold WESTERN ELECTRIC CO Inc 7 Sept 1972 [10 Sept 1971] 41496/72 Heading C7B [Also in Division H1] A conductive electrode pattern is formed on a platinum surface by oxidizing the platinum surface, applying a photo-resist mask and electro-depositing gold on to the exposed areas to form the electrode pattern. The platinum surface may be oxidized anodically using sulphuric acid, potassium hydroxide or a perchlorate electrolyte; or chemically using nitric, perchloric or chromic acid, or an acid solution of potassium dichromate or cerium sulphate. The platinum surface 18 may be deposited on a semi-conductor 11 having a silicon dioxide coating 16, gaps in which provide for connections thereto, and thereover a titanium coating 17. Following electro-deposition of the gold 21, the photo-resist and the platinum and titanium layers not coated with gold are removed by dissolution, back spluttering, etching &c., the deposited gold 21 thus forming connections to the semi-conductor device.
Patent GB-1215669-A (GB)
Title: Variable-ratio power transmission mechanisms
IPC: F16H47/08
Filed: 1969-08-21
Abstract: 1,215,669. Making clutch plates and machine details; rolling splines; corrugating. GENERAL MOTORS CORP. 21 Aug., 1969 [13 Sept., 1968], No. 41677/69. Headings B3A; B3E; B3M. [Also in Division F2] In a planetary change speed gear (see (Division F2) concentrically arranged axially overlapping cylindrical drums 81, 49 which are required to have both internal and external splines 82, 79 and 58, 48 respectively to enage complementary splines on interleaved friction disc packs of ratio-establishing clutches 91, 70 and brake 46, are made from sheet metal drums in which the internal and external splines are formed as radially overlapping corrugations, see Fig. 4, by rolling a profiled roller axially over the drum whilst it is mounted on a profiled mandrel. The internally splined discs of the pack 91 are splined to an inner drum 108, and the externally splined discs of the pack 46 to the casing and the radial dimensions of the packs are in the ascending order shown. Due to this, and to the radial overlap of the splines on the drums, each of the externally splined discs of all three packs 81, 70, 46 can be punched from a single sheet metal blank, as can also each of those of the internally splined discs.
Patent GB-1359312-A (GB)
Title: Esterification of halosilanes
IPC: C07F7/18
Filed: 1971-09-07
Abstract: 1359312 Esterifying halosilanes UNION CARBIDE CORP 7 Sept 1971 [8 Sept 1970] 41697/71 Heading C3S Halosilanes are esterified by reacting them with a sufficient amount of a monohydric alcohol to esterify at least 80% of the halogen atoms present in a reaction zone having a temperature sufficient to maintain both the reactants and the reaction products in the vapour state, and removing the said reaction products from the reaction zone in the vapour state. The reaction zone temperature is preferably at least 5 C. greater then the reaction product having the highest boiling point, working pressure is preferably atmospheric and contact time is preferably of the order of 0À1 to 40 seconds. Occluded hydrogen halide may be removed by condensing the reaction product into a solvent under reflux conditions, by condensing the reaction product and bubbling through it an inert gas, or by condensing the reaction product through a porous plate or packed porous bed which are subsequently sparged with an inert gas. Suitable preparation and recovery apparatus is described. In examples methyl trichlorosilane is esterified with methanol to give a mixture of methyl vichloromethoxysilane and methylchlorodimethoxysilane; trichlorosilane is esterified (a) with methanol to give a mixture of trimethoxy- and tetramethoxysilanes, (2) with ethylene glycol monoethylether to give a mixture of HSi(OC 2 H 4  OCH 3 ) 3  and Si(OC 2 H 4 OCH 3 ) 4 , (3) with ethanol to give a mixture of triethoxy and tetraethoxysilanes, (4) with butanol to give a mixture of tributoxy and tetrabutoxysilanes, and (5) with propanol to give a mixture of tripropoxy and tetrapropoxysilanes; beta-cyanoethyltrichlorosilane is esterified with ethanol to give a mixture of NC.CH 2 CH 2  SiCl(OC 2 H 5 ) 2  and vinyltrichlorosilane is esterified with propanol to give a mixture of vinyltripropoxy and vinylchlorodipropoxysilanes ; gamma - isocyanatopropyltrichlorosilanes esterified with methanol to give a mixture of and with minor amounts of (where n is 1 or 2); and phenyltrichlorosilane is esterified with ethanol to give a mixture of phenyltriethoxy and phenylchlorodiethoxysilanes.
Patent GB-1326304-A (GB)
Title: Material handling apparatus
IPC: B65D19/42
Filed: 1971-09-07
Abstract: 1326304 Low-lift trucks AIR PREHEATER CO Inc 7 Sept 1971 [8 Sept 1970] 41712/71 Heading B8H [Also in Division B7] A load handling platform 12 has two sets of wheels or rollers 14, 16 arranged at right angles to each other, means for driving each set of wheels 14, 16 and means for raising one or other of the sets of wheels 14, 16 out of contact with the ground so that the platform 12 remains at a constant level and can move either in a longitudinal or transverse direction. The wheels 14, 16 are mounted in bearings 18 in brackets 22 which can be raised by hydraulic cylinders 24. Pressurized hydraulic fluid is supplied from a pump 34 driven by motor 36 through a distributor valve 28 to either line 32 or 26 depending on which set of wheels is to be raised. Valve 28 also directs fluid to either motor 38 or motor 46, the motors 38, 46 driving the wheels 16, 14 respectively by drive belts 42 and flexible shafts 44. The valve 28 can also direct fluid to cylinders 54 to raise load carrying supports 52 on the platform 12.
Patent GB-968025-A (GB)
Title: Improvements in optical mirrors
IPC: G02B5/08
Filed: 1960-12-05
Abstract: 968,025. Laminates. HERAEUS QUARZSCHMELZE G.m.b.H. Dec. 5, 1960 [Dec. 5, 1959; June 3, 1960], No. 41763/60. Heading B5N. [Also in Division G2] In an optical mirror comprising a reflective coating and a supporting arrangement therefor, said supporting arrangement is formed of fused silica, quartz glass, ceramics material or high melting point glass with a high SiO 2  content, all being materials having a low coefficient of expansion, and comprises a carrier plate supported by tubular supporting means, each of said supporting means having an end secured to said plate, said plate and said supporting means being formed from one of said materials. A base plate may also be provided secured to the other ends of the tubular members. The preferred material for both plates and tubular members is fused silica. The tubular members may have any suitable cross-section, for example, circular or polygonal, and may be formed with no space between them (thereby assuming a honeycomb structure) as in Figs. 4 and 5 (not shown). The tubular members may be integral with, welded to, sweated on or optically sprung on to the plate or plates. The front plate may for example be plane or concave. In the embodiment shown in Fig. 1, a carrier plate 3 for the reflective coating is supported by tubular members 2 secured at their ends respectively to the plate 3 and to a base plate 1. The plate 1 may be extended upwards to the edge of the plate 3 and may be welded thereto. Ventilation holes 4, 5 are pro. vided in the tubular members and base plate respectively. In a second embodiment (Fig. 2), the front plate is in two parts, the outer part of which is of transparent silica and the inner part of which (like the tubular members) is of translucent silica. The tubular members 2 are secured to the base plate 1 in such a way that their lower ends are open.
Patent GB-1143244-A (GB)
Title: Improvements relating to catalysts
IPC: C07C5/22
Filed: 1967-09-14
Abstract: 1,143,244. Isomerizing paraffins. TEXACO DEVELOPMENT CORP. 14 Sept., 1967 [27 Sept., 1966], No. 41931/67. Heading C5E. [Also in Division B1] Hydrocarbons, particularly C 4 -C 6  paraffins, e.g. n-hexane are isomerized with a chlorinated or brominated hydrocarbon activated Pt-Al 2 O s  composite stabilized by the steps of (a) heating for at least 0À1 hour at 600-1200 F. in the presence of a non-reactive gas flowing through the composite at a flow rate of at least 300 S.C.F. per hour per square foot of reactor cross-section, (b) adjusting the temperature of the composite to 150-700 F. and (c) contacting the composite with HCl or HBr admitted at a dosage of at least 1 volume at 60 F. and 1 atmosphere over a period of at least 0.5 hour at 150-700 F. Examples describe the isomerization of (1) n-hexane to yield 2 : 2 dimethylbutane at 200-350 F., (2) naphtha and (3) n-butane to isobutene. n-Pentane is also a specified starting material, but no details of conversion are provided.
Patent GB-1146814-A (GB)
Title: Improvements in or relating to clamping devices
IPC: F16D65/18
Filed: 1966-09-20
Abstract: 1,146,814. Seals. ALFRED TEVES G.m.b.H. 20 Sept., 1966 [23 Feb., 1966], No. 41978/66. Heading F2B. [Also in Division E2] In an assembly consisting of a rubber cap 3 and a clamping ring 5, for clamping a peripheral portion of the rubber cap against a wall of an annular groove, with one face of the ring pressing against the peripheral portion and the other face being bevelled to provide an acuteangled edge 7 pressing against the other wall fo the groove, the face of the peripheral portion in contact with the ring is formed with a series of beads 6 which are deformed by the action of the ring. As shown, the cap 3 surrounds a piston 1 which is guided in a bore in a housing 2.
Patent GB-1357586-A (GB)
Title: Adhesive tape
IPC: C09J7/10
Filed: 1971-09-09
Abstract: 1357586 Laminates NORTON CO 9 Sept 1971 [10 Sept 1970] 42184/71 Heading B5N [Also in Division B2] An adhesive tape comprises a layer of non- tacky hot melt adhesive and on one side thereof and in contact therewith a layer of tacky, pressure-sensitive adhesive, the pressure-sensitive adhesive being compatible with the hot melt adhesive at elevated temperature so that at elevated temperature the hot melt adhesive diffuses throughout the pressure-sensitive adhesive. The hot melt adhesive layer may be in contact with a release liner so that the tape is a transfer tape suitable for forming a splice between two members to be joined. Alternatively the adhesives may be coated on to a backing member optionally having arelease coating on its back surface, the hot melt adhesive being in contact with the backing member, and the pressure sensitive adhesive optionally being covered with a release liner. The backing member may be a polyvinyl chloride, polyethylene terephthalate or cellulose acetate film, aluminium foil or impregnated paper, the hot melt adhesive may be a coumarone-indene resin, rosin or derivative thereof, a mineral, vegetable or petroleum wax, alkyd or terpene resin which may contain ethyl cellulose, polyvinyl acetate, polybutyl methacrylate, polyethylene, polystyrene, a styrene copolymer or polybutylene, or a polyamide derived from a dimerized fatty acid and a diamine per se, and the pressure sensitive adhesive may be natural rubber, styrene-butadiene, nitrile, polychloroprene or chlorosulphonated polyethylene rubber, a polyvinyl ether or polyacrylate, tackified with a hydrocarbon resin, polyterpene resin or hydrogenated rosin ester. In examples (1) polyethylene terephthalate is coated first with a mixture of ethylene-vinyl acetate copolymer and polystyrene dissolved in toluene and then with a pressure sensitive adhesive comprising rubber, polyterpene resin, petroleum oil and polymerized trimethyl dihydroquinoline dispersed in toluene, (2) paper impregnated with a composition comprising butadiene-acrylonitrile rubber, zinc oxide, sulphur, stearic acid, benzothiazyl disulphide and diethylhexyl phthalate dissolved in toluene and methyl ethyl ketone and cured is coated as in (1), the pressure sensitive adhesive also containing zinc oxide, (3) aluminium foil is coated first with a mixture of high molecular weight and low molecular weight polystyrene resins in toluene and then with a pressure sensitive adhesive comprising butadiene-styrene rubber, hydrogenated rosin ester, lanolin and phenyl-beta-naphthylamine dispersed in toluene and (4) unplasticized polyvinyl chloride film is coated as in (1). The tapes are pressed on to stainless steel substrates and heated to effect bonding.
Patent GB-1306167-A (GB)
IPC: F01K25/08
Filed: 1970-09-08
Abstract: 1306167 Vapour power plant NISSAN MOTOR CO Ltd 8 Sept 1970 [18 Sept 1969] 42879/70 Heading F1Q A vapour power plant driven by a working fluid vaporized from cool liquid comprises a working fluid circuit including an evaporator 10 for converting the cool liquid into vaporized working fluid and a prime mover 12 receiving the vaporized working fluid and driven thereby. A cooling fluid circuit includes cooling means 19, the working fluid and the cooling fluid circuits sharing a common condenser 14 communicating with outlet ports of the prime mover and the cooling means. A common liquid reservoir 16 communicates with inlet ports of the evaporator and the cooling means. In a modification, not shown, the evaporator 10 receives liquid directly from the cooling means or radiator 19 through a branch passage. The liquid may be selected from a group consisting of fluorocarbons and hydrocarbons.
Patent GB-1467072-A (GB)
Title: Tyre changing machines
IPC: B60C25/04
Filed: 1974-01-30
Abstract: 1467072 Tyre changing machines MAGNUM AUTOMOTIVE EQUIPMENT Inc 30 Jan 1974 [30 Jan 1973] 42981/76 Divided out of 1467071 Heading B7C The subject matter of the present Specification is identical with that of Specification 1,467,071, but the claims are directed to an upper bead breaker mechanism comprising a shoe which in use is positioned between the tyre sidewall and a blade of the mechanism to facilitate movement of the blade radially of the tyre.
Patent GB-1486049-A (GB)
Title: Unsaturated polyester resins containing additional accelerators
IPC: C08L91/06
Filed: 1975-10-21
Abstract: 1486049 Accelerators for curing unsaturated polyester resin compositions BAYER AG 21 Oct 1975 [15 Nov 1974] 43099/75 Heading C3P A moulding or coating composition comprises (A) a polymerizable composition consisting of 20-90% by weight of at least one α-# ethylenically unsaturated polyester and 80-10% by weight of at least one ethylenically unsaturated compound and based on the weight of (A), (B) 0À001 to 0À1% by weight of at least one polymerization inhibitor (C) 0À001 to 0À5% by weight of at least one accelerator and (D) 0À05 to 5% by weight of an additional accelerator having the formula where X is O, S or NR<SP>2</SP>; R<SP>1</SP> is a C 1 -C 8  aliphatic radical, OH NR 4 R 5 , cyclohexyl, cyclopentyl, C 1 -C 4  alkoxy radical or -COOR 3 ; R<SP>2</SP> is H, acetyl, benzoyl, phenyl a C 1 -C 8  aliphatic or a C 5 -C 8  cycloaliphatic radical; R 3  is H, a C 1 -C 8  aliphatic radical or an aromatic radical and R 4  and R 5  which may be the same or different are H, a C 1 -C 4  aliphatic radical, phenyl, cyclohexyl or together form a C 4 -C 8  cycloaliphatic radical and optionally (E) 0À01 to 10% of a paraffin or wax and/or (F) 1 to 10% by weight of an organic phosphine having up to 12 carbon atoms per organic radical, an aromatic phosphite having up to 12 carbon atoms per aromatic radical and/or a thioether; the composition being curable by 0À1 to 8% by weight based on the weight of A of a polymerization initiator. In the examples a mixture of styrene, a polyester prepared from propane diol, maleic anhydride; phthalic anhydride with or without thiodiglycol and toluhydroquinone is combined with cobalt octoate, a paraffin and one of N methyl 3 acetyl (3 carboxycarbonyl or carbethoxycarbonyl) 2 pyrollidone, 3 acetyl 2 pyrrolidone, α acetyl- or carbethoxy-carbonyl and butyrolactone or 3 carbethoxy-carbonyl 1 thia 2 cyclopentanone or for comparison ethyl acetoacetate, acetoacetic acid ethylene glycol ester, triacetylmethane, acetylacetone, acetoacetic N benzlamide or 2 acetylcyclopentanone and is applied to glass plates previously coated with a composition containing cyclohexanone peroxide, toluene, butyl acetate, ethyl acetate and nitrocellulose.
Patent GB-1513197-A (GB)
Title: Poly(butyleneterephthalate)-polyurethane blends
IPC: C08L67/00
Filed: 1976-10-18
Abstract: 1513197 Polyurethane; poly (butyleneterephthalate) blends MOBAY CHEMICAL CORP 18 Oct 1976 [20 Oct 1975] 43164/76 Heading C3R A low temperature impact resistant composition comprises an intimate mixture of 25 to 50 p.p.w. of poly(butyleneterephthalate) whose intrinsic viscosity [n] may be within the range 0À6 to 1À5, and 50 to 75 p.p.w. of a thermoplastic processable polyurethane which is defined as a block polymer prepared from a diisocyanate, a polyester or polyether and a chain extender and is processable by compression or injection mould. ing or extrusion. Articles may be formed from these blends by a method which comprises mixing the reactants from which the polyurethane is obtained at for example 100‹ C. to form a liquid reaction mixture; casting this mixture on to a heated surface, e.g. at 100‹ C. and allowing it to solidify; removing the thermoplastic processable polyurethane thus formed from the surface and allowing to cool; blending this polyurethane with a poly(butyleneterephthalate) and shaping the blend under heat and pressure to give the required articles. In an example 75 p.p.w. of a thermoplastic processable polyurethane prepared by reacting a polyester Mol. Wt. 2,000 obtained from adipic acid and 1,4 butane diol; ethylene glycol as chain extender and sufficient diphenylmethane diisocyanate (free HCl content 0À017 p.p.w.) to react with all the hydroxy groups in the reaction mixture and to provide a 6% by weight excess, was blended, by means of a single screw extruder, with 25 parts of poly(butyleneterephthalate). This blend was cut into pellets and moulded to provide 4 inch diameter, 0À1 to 0À125 inch thick test discs which where flexible at - 70‹ C. and had low temperature impact values 65À2 to 57À37 ft. lb. after immersion in methanol at - 70‹ C. for two minutes.
Patent GB-1064107-A (GB)
Title: A muting circuit
Inventor: KING HOWARD GURNOS
IPC: H03G3/26
Filed: 1964-10-23
Abstract: 1,064,107. Muting. STANDARD TELEPHONES & CABLES Ltd. Oct. 23, 1964, No. 43305/64. Heading H3T. In a muting circuit for a radio receiver the audio channel is emblocked in response to (1) a received signal exceeding the noise level in a signal sampling circuit and simultaneously (2) the frequency of the signal coinciding with the cyclicly varied resonant frequency of a tuned circuit. The receiver comprises an I.F. amplifier 1 (Fig. 3, not shown), signal detector 2 and audio amplifier 4 fed through a series muting diode gate 3. The I.F. amplifier 1 also feeds into a narrow pass-band filter 6 the frequency of which is continuously swept, at low frequency, over the main I.F. band by means of sweep generator 5. The output of the narrow-band filter 6 includes a sharp pulse when a signal is intercepted (Fig. 2, not shown); this is rectified by a peak detector 7 and passed via a filter 8 removing the sweep frequency to an integrating circuit 9. The D.C. potential so developed causes a bi-stable circuit 10 to reverse and so switch the series diode muting gate 3 into a conductive condition. In a modification (Fig. 4, not shown) the frequencyswept filter is replaced by a varactor tuned oscillator, the swept output of which is mixed with output from the I.F. amplifier in a mixing circuit, and the pulse occurring at zero beat is passed via a low-pass filter to a rectifier whose output controls the bi-stable circuit. In an embodiment, the frequency of the narrow-band filter is controlled by a varactor diode 23 (Fig. 5, not shown) and the bi-stable circuit comprises a Schmitt trigger pair of transistors 57, 64.
Patent GB-969357-A (GB)
Title: Travelling cases
Inventor: THOMASON MICHAEL GORDON
IPC: A45C5/02
Filed: 1961-12-04
Abstract: 969,357. Suitcases. BARROW HEPBURN & GALE Ltd. Dec. 4, 1962 [Dec. 4, 1961], No. 43364/61. Heading A4G. In a method of making a suitcase having walls formed by a fibre board strip 3 a decorative band 4 is formed on the strip 3 in its flat condition. The strip is coated with an aqueous pigment dispersion bound with casein and oil, a vinyl co-polymer emulsion and an acrylonitrile emulsion and dried, a pattern is then printed on it by means of a pigmented foil as it is passed between a heated embossed roll and a backing roll. Specification 887,584 is referred to.