baber/WOPTO huggingface dataset:
Patent GB-1484708-A (GB)
Title: Suspension pvc
IPC: C08F14/06
Filed: 1974-11-14
Abstract: 1484708 Vinyl chloride suspension polymerization SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ BV 12 Nov 1975 [14 Nov 1974] 49275/64 Heading C3P Vinyl chloride polymers having reduced residual vinyl chloride monomer content are produced by polymerizing vinyl chloride, in presence of one or more dispersing agents and at least one monomer-soluble initiator, removing unpolymerized vinyl chloride and recovering the polymer from the suspension, wherein a non-polymerizable hydrocarbon having a boiling point up to 150‹ C. is added to the suspension when at least 60% by wt. of the vinyl chloride has been polymerized but before the removal of unpolymerized vinyl chloride. The hydrocarbon may be propane, n-butane or npentane, and is stated to facilitate easier removal of monomeric vinyl chloride, e.g. by stripping with an inert gas and/or under reduced pressure.
Patent GB-1528493-A (GB)
Title: Binder for punched loose leaves
IPC: B42F13/14
Filed: 1975-12-02
Abstract: 1528493 Loose - leaf binders PAUL KOCH KG PAPIERVERARBEITUNGSWERK LEUCHTTURM ALBENVERLAG 2 Dec 1975 [21 Jan 1975] 49484/75 Heading B6E A loose-leaf binder comprising cover members 2, 3 articulated to a spine 4 through the intermediary of members 5 has one of the latter fitted with sheet retaining means in the form of a carried rail 6 with posts or rings 7 whose locking grooves 8 co-operate with a locking bar 10 on the other member 5. The locking bar 10 supports pivotally and slideably a locking shaft 13 provided in registry with the posts 7 with recesses (15, Fig. 1) which co-operate with the grooves 8 when the post 7 are passed through holes 12 in the bar 10. Pivoting of the shaft 13 through 180 degrees locks the posts and sliding of the shaft prevents its pivoting.
Patent GB-1284415-A (GB)
Title: Process for carbonising cellulose fibres or products thereof
IPC: D01F9/16
Filed: 1969-10-09
Abstract: 1284415 Carbonizing cellulose fibres NITTO BOSEKI CO Ltd 9 Oct 1969 [12 Oct 1968 5 Sept 1969 (3)] 49630/69 Heading C1A [Also in Division D1] Cellulose fibre material, i.e. cellulose fibres, or a woven or non-woven fabrics made wholly or partially from cellulose fibres, are treated with a strength increasing agent which consists ofor includes at least one non-metallic compound formed of an oxy acid of sulphur and a nitrogencontaining base, and the treated material carbonized by heating at a temp. in the range 180‹ to 1000‹ C. in an inert atmosphere. If desired this product may be further heat treated in an inert atmosphere at a temperature above 1000‹ C. The oxy-acid of sulphur may be sulphuric acid, sulphurous acid, thiosulphuric acid, sulphamic acid, and imido-sulphonic acid, and the nitrogen containing base may be selected from urea, thiourea, amines ammonia, guanidine, dicyandiamide, dicyandiamidine, triethylamine, triethanolamine, pyridine and aniline. The strength increasing agent may be ammonium sulphate, ammonium bisulphate, ammonium sulphite, ammonium bisulphite, ammoniumthiosulphate, ammonium sulphamate, ammonium imidosulphonate or a mixture of any two or more of these. If desired, at least one of these ammonium salts may be mixed with at least one of urea, thiourea and amines. The strength increasing agent may be used as an aqueous solution. The carbonizing step may be carried out at a heating rate of 1‹ to 5‹ C./min. The treating agent may contain in addition a flame resistance improving agent which comprises at least one of ammonium phosphate, guanidine phosphate, aluminium ammonium sulphate and tetrakis (hydroxymethyl)phosphonium chloride.
Patent GB-1127217-A (GB)
Title: Wheeled transportation vehicle
Inventor: SCHWARTZ FREDERICK WILLIAM
IPC: B61D5/06
Filed: 1965-11-23
Abstract: 1,127,217. Tank wagons. UNION TANK CAR CO. 23 Nov., 1965, No. 49756/65. Heading B7L. A railway tank wagon comprises a tank 11 formed from a central section 12, end sections 13 of circular vertical transverse cross-section and transition sections 14 between the central and end sections, the perimeters of vertical transverse cross-sections of the sections 12, 14, 14 being formed by two opposed circular arcs which intersect at points lying on a horizontal chord common to the arcs, each arc being greater than a semicircle. The radii of arcs of the upper and lower shells 23, 24 of the section 12, the upper and lower shells 33, 34 of the transition sections 14, and the shells 29 of the end sections 13, are all the same. Weld seams 26<SP>1</SP> and 36<SP>1</SP> between the shells 23, 24 and 33, 34 respectively are joined to internal perforated metal plates (27), (27<SP>1</SP>), respectively, as described with reference to Figs. 2 and 4 (not shown). The shells 23, 24 and 33 are portions of right circular cylinders whereas the shell 34 is a portion of a cylindroid. The shells 33, 34 are cut along the weld lines 36<SP>1</SP> as described with reference to Figs. 5 to 7 (not shown). The cross-section of the shells 23, 24 and 33, 34 are symmetrical about the plates (27), (27<SP>1</SP>) respectively.
Patent GB-1073662-A (GB)
Title: Control circuit for a tele-control system
IPC: G08C19/30
Filed: 1963-12-17
Abstract: 1,073,662. Measuring electrically. CHARBONNAGES DE FRANCE. Dec. 17, 1963 [Dec. 18, 1962], No. 49850/63. Heading G1N. In a device for selectively injecting a direct current of either positive or negative polarity into a two-wire control line 20, one wire is permanently connected to the common terminal 0 of two series-connected D. C. sources S 1 , S 2  and the other wire is connected firstly, permanently to the other terminal of source S 1  through a current regulating device R 1 , T and secondly, selectively, using a manual contact 22 or automatic step-bystep contact 24, to the other source S 2  through a second current regulating device 23 set for a current greater than that through the first regulating device R 1 , T. Several control lines 20 in the same unit have individual first regulating devices R 1 , T and a common second regulating device 23. In the illustrated embodiment the device controls an explosion meter as in British Patent No. 913, 566 controlled by a rechargeable accumulator and which emits a frequency signal according to the concentration of fire damp in the atmosphere. Each interrogation wire 20b is connected through a diode d 1  to a line 25 to a frequency meter, and also through one of contacts 27a, b.... to alarm meter lines 25a, b. . . . set at different alarm thresholds. Each interrogation line 20b is also connected through a diode d 2  to a telephone amplifier line 30 also connected through a resistance R 4  or a relay to source S 1  such that when line 20b is broken the potential at terminal 29b is higher than that at 29a allowing the loud speaker to operate only on a broken line 20b. Telephone communication between the fire damp measuring station and the control station may be made by breaking the line 20b.
Patent GB-1322619-A (GB)
Title: Vacuum pumps
IPC: F04C29/02
Filed: 1971-10-27
Abstract: 1322619 Rotary positive-displacement pumps GENERAL SIGNAL CORP 27 Oct 1971 [21 Dec 1970] 49870/71 Heading F1F In an oil-sealed vacuum-pump the bearings are lubricated through throttling valves 26 and a check valve 27, which prevents disturbance of the surface 18 of the oil pool by gas leaking through the bearings. A discharge pipe 15 carries a baffle unit 17 comprising an imperforate skirted baffle and woven-wire mesh screens 21, 22 to break oil slugs and coalesce oil mist issuing from said pipe. The valve 27 may have a glass dome through which operation of a ball element can be observed, Fig. 2 (not shown).
Patent GB-1281463-A (GB)
Title: Image intensifier apparatus
Inventor: EVERSHED NORMAN BRUNEL
IPC: H04N5/53
Filed: 1970-10-22
Abstract: 1281463 Photo-electric control systems STANDARD TELEPHONES & CABLES Ltd 22 Oct 1970 50128/70 Heading G1A [Also in Division H4] In an image intensifier tube 1 powered by a rectifier and capacitor voltage multiplier stack 4 fed by an oscillator 5, the final image intensity is controlled by diverting some of the incident radiation onto a photo-cell, e.g. a photo-diode, (12) Fig.2 (not shown), and employing the photocell output in a circuit which controls the output current of the oscillator in inverse proportion to the photo-cell output current. In this way, if a sudden flash of light occurs, the voltages on the electrodes 7, 8 are accordingly reduced and the phosphor screen 3 is not damaged. The circuit controlling the oscillator output current comprises three cascade connected transistors (13, 14, 16).
Patent GB-1130938-A (GB)
Title: Improvements in metal-clad laminates
IPC: H05K3/38
Filed: 1966-11-09
Abstract: 1,130,938. Metal clad polyolefine laminate. GENERAL ELECTRIC CO. 9 Nov., 1966 [8 Dec., 1965], No. 50193/66. Heading B5N. A metal clad laminate for use in making printed circuits comprises a plurality of fused thin sheets of irradiated polyolefin with a layer of metal superimposed on the surface of at least one of the outer polyolefine sheets. The polyolefin is preferably polyethylene but may be polypropylene or blends and copolymers of olefins such as of ethylene with butadiene and isobutylene, propylene, butenes and pentenes. The metal is preferably copper and may be oxidized to asist adhesion which is effected under heat and pressure.
Patent GB-1465680-A (GB)
Title: Signs
IPC: G09F7/16
Filed: 1974-10-30
Abstract: 1465680 Signs D & AP PRODUCTS Ltd 30 Oct 1974 [30 Oct 1973] 50351/73 Heading G5C A sign has letters or other indicia each formed separately as a composite plastics structure comprising a moulded side wall element 1 internally flanged at 2 to receive a face element 3 which is held in position by pins 5 on a moulded rim element 4. Elements 1, 3 and 4 may be transparent or opaque, and may enclose cold cathode tubes. When the letters are fixed to a mounting panel, the entire panel may be rear-illuminated. Element 4 may take various cross-sections and may be metal-plated.
Patent GB-1423883-A (GB)
Title: Binders for environmentally harmless lacquers
IPC: C08G63/00
Filed: 1973-10-31
Abstract: 1423883 Alkyd resin binders for lacquers BAYER AG 31 Oct 1973 [31 Oct 1972 31 Jan 1973 19 June 1973 31 Aug 1973] 50611/73 Heading C3R A binder for a melamine or benzoguanamine resin containing lacquer or a urea-containing lacquer which contains less than 30% wt. of solvent is based on an oligomeric alkyd resin of a polyalcohol and an aromatic dicarboxylic acid which is modified with an unsaturated monocarboxylic fatty acid which may be completely or partially replaced by other monocarboxylic acids, the molar ratio of polyalcohol to aromatic dicarboxylic acid to monocarboxylic acid being from 1 : 0À5 : 0.5 to 1 : 0À8 : 1À5 which alkyd resin has from 0À05-0À65 equivalents of aromatic dicarboxylic acid attached by partial condensation as a semi-ester per 1000 p.b.w. of the alkyd resin. The alkyd resin generally has a M.Wt. of 800-2000 and an OH number of 40-150. Preferred polyols are glycerol and trimethylolpropane up to 20 mol per cent of which may be replaced by dihydric alcohols. Suitable aromatic dicarboxylic acids are phthalic acid up to 20 mol per cent of which may be replaced by other dicarboxylic acids preferably adipic acid. Suitable mono-carboxylic acids are benzoic, hexahydrobenzoic, butyl-benzoic, tolyl and α-ethylhexanoic acid and other saturated fatty acids with 8-18 C atoms. Suitable unsaturated fatty acids are those of castor oil, dehydrated castor oil, soya oil, safflower oil, cotton seed oil, peanut oil and tall oil. Suitable solvents for the lacquers include hydrocarbons, ketones, alcohols and esters. In the examples alkyd resins are prepared by reacting trimethylolpropane, phthalic acid anhydride and either (i) dehydrated castor oil, benzoic acid and α-ethylhexanoic acid, or (ii) castor oil and benzoic acid, or (iii) soya oil fatty acid, ground nut fatty acid and p-tertbutylbenzoic acid, or (iv) propane diol, adipic acid, soya oil fatty acid and hexhydrobenzoic acid in a first reaction stage and then reacting the polycondensate obtained with phthalic acid anhydride. A white lacquer is prepared from the alkyd resin of (ii), (iii) or (iv) above, ethyl glycol acetate, titanium dioxide, hexamethoxy methylene-melamine, p-toluene sulphonic acid and butyl acetate. In another example an alkyd resin is prepared by a one stage reaction from trimethylol propane, phthalic acid anhydride, adipic acid, α-ethyl-hexoic acid and hexahydrobenzoic acid. A clear lacquer is prepared from the above alkyd resin, a melamine resin, ethylglycol acetate and butanol.
Patent GB-1215169-A (GB)
Title: A mould for bending sheet glass
IPC: C04B28/24
Filed: 1968-10-25
Abstract: 1,215,169. Mould for bending glass sheets. LIBBEY-OWENS-FORD CO. 25 Oct., 1968 [2 Nov., 1967], No. 50658/68. Heading ClM. [Also in Division B2] A mould for bending heated glass sheets comprises a shaping element 17 having a metal surface 42 conforming to the contour to which the sheet is to be bent, which element has a covering of fibrous refractory material 43 and a refractory coating 44 over the said covering. The insulating material may be an aluminasilica mat, preferably impregnated with colloidal silica. The coating may be colloidal silica mixed with fused quartz. The surface 42 may be sanded and primed prior to applying the covering 43 by use of adhesive layer 45. The coating 44 may be applied by painting the covering 43 with a slurry of refractory material, and heating to vaporize the liquid vehicle. Successive layers up to a thickness of 1/32 inch may be applied. The mould may comprise a skeleton-type mould element, there being channels 22 for cooling fluid, e.g. air, in the element, which may be used in combination with a male mould part to reshape sheets heated to about their softening point in conventional manner.
Patent GB-1172609-A (GB)
Title: Motorised Trolley for Overhead Railway
Inventor: BORST ADOLF H
IPC: B61B12/02
Filed: 1967-11-08
Abstract: 1,172,609. Locomotives; elevated railways. A. H. BORST. 8 Nov., 1967 [8 Nov., 1966], No. 50731/67. Heading B7L. In an overhead railway a locomotive comprises pairs of running wheels 2 and 2a, Fig. 1, mounted on longitudinal members 16 and running on flanges of a suspension rail 14; a suspension frame 1 having a slot 18 connected to a pivot pin 17 on the members 16; and friction driving wheels 6, 5, 5, 7 and 7 carried by a bearing frame 3 supported on the frame 1 by springs 4, 4a and connected thereto, for restricted relative movement, by members 8, 9 and 10, wherein the wheel 6 is driven by a motor (not shown), is larger in diameter than the wheels 5, 7 and drives the latter wheels by belts or chains 13. When travelling along a horizontal rail the frame 1 is urged upwardly by a spring 12 and only the wheel 6 engages the rail 14. When negotiating an inclined or vertical section of the rail the frame 1, Fig. 3, pivots about the pin 17, under its own weight and the weight of the load 19, so that only the wheels e.g. 5, 5, below the pivot engage the rail and consequently the speed is reduced but the driving torque is increased. According to a modified railway the lower side of the horizontal track section has strips secured thereto whereby the wheel 6 can be disengaged from the rail and the strips engaged by the wheels 5, 5, 7 and 7, to reduce the locomotive speed.
Patent GB-1486295-A (GB)
Title: Processes for producing chairs
IPC: A47C5/02
Filed: 1974-11-27
Abstract: 1486295 Seat bottoms P BRUNIAUX 27 Nov 1974 [30 Nov 1973 16 July 1974 13 Nov 1974] 51421/74 Heading A4J A process for producing a chair comprises the steps of weaving from a straw-like material a repeating pattern in a continuous web, cutting from the web an individual piece of fabric 11 comprising one pattern repeat and tensioning the individual piece of fabric on to a support to form the seat of the chair. The support may be an open frame or a flat panel. Stuffing may be disposed between the fabric and the panel. The stuffing may comprise four triangular sections. The warp and weft threads may be fixed at the junction lines 20-23 of the triangular sections by weaving. If the fabric is of thermoplastic material the junction lines may be formed by die-casting or by sticking the threads. The fabric may be secured to the panel along the junction lines. Threads which may be removed when the fabric has been tensioned may be woven into the fabric to fix the warp and weft threads in the desired pattern.
Patent GB-1534136-A (GB)
Title: Hydrogenation catalyst composition process of producing same and production of gamma-butyrolactone from maleic anhydride therewith
IPC: C07D307/33
Filed: 1975-12-17
Abstract: 1534136 Hydrogenation catalysts GAF CORP 17 Dec 1975 [18 April 1975] 51697/75 Heading B1E [Also in Division C2] Hydrogenation catalysts consist of elemental copper and elemental palladium in a weight ratio of 10-500:1 supported on magnesium silicate, asbestos, kieselguhr or silica gel, the metals comprising 3-40 wt. % of the composition. They are useful in the production of γ-butyrolactone by the hydrogenation maleic and/or succinic acid and/or anhydride (see Division C2).
Patent GB-1078084-A (GB)
Title: Improvements relating to adjustable fittings for industrial, domestic and display lamps and the like
IPC: F21V21/06
Filed: 1965-12-06
Abstract: 1,078,084. Stands. M. VICTOR. Dec. 6, 1965, No. 51704/65. Heading A4H. [Also in Division F4] A twin parallel track of strip metal extends from a baseplate and a sliding bobbin of metal or nylon is held captive in the track by its projecting flanges and carries a tubular post supporting a lampholder and shade, the spacing of the flanges being such that the bobbin can be moved freely to any point on the track and is locked there when released by the tilt of the bobbin under the weight of the assembly.
Patent GB-1336481-A (GB)
Title: Method of magnetizing a permanent magnet assembly and a per manent magnet assembly when prepared by the method
IPC: H01F13/00
Filed: 1971-11-08
Abstract: 1336481 Moving-coil transducers PIONEER ELECTRONIC CORP 8 Nov 1971 [9 Nov 1970] 51838/71 Heading H4J [Also in Division H1] In a method of magnetizing a pot-type magnetic circuit, e.g. for loud-speakers or microphones, comprising a retentive permanent magnet 4 surrounded by a non-retentive ferromagnetic yoke 3 for minimum magnetic leakage; due to residual magnetization of the yoke, the circuit is magnetized in a strong field between poles 2, Fig. 1, and then similarly magnetized in reverse direction by a field of lower intensity (Fig. 2, not shown) such as to demagnetize the yoke without substantially affecting the operating point of the permanent magnet; and as a result to increase the airgap flux. In the magnetizing circuit (Fig. 9, not shown) a coil exciting opposed poles is switchable to a D.C. source in alternate senses; first direct for initial magnetization and second through a series resistance for removal of the residual magnetism.
Patent GB-1420207-A (GB)
Title: Short back-fire antennae
IPC: H01Q19/185
Filed: 1972-11-10
Abstract: 1420207 Aerials DEFENCE SECRETARY OF STATE FOR 20 Nov 1973 [10 Nov 1972] 51935/72 Heading H4A An aerial of the short back fire type comprises two flat metal plates 1, 2, Fig. 4, of unequal sizes in spaced-apart parallel relationship perpendicular to the aerial axis and with their centres located on said axis, a rim portion 3 around the perimeter of the larger plate 1 which is directed towards the plane of the smaller plate 2, and a waveguide 5 having a radiating aperture to feed the cavity 4 formed between the two plates. As shown, the two plates are circular and of respective diameters 2# and #/2, where # = wavelength at the nominal operating frequency although their respective largest dimensions perpendicular to the axis may be elsewhere within the ranges 1À0 to 4À0#, and 0À3 to 1À0#. The depth of the rim is #/4, and the spacing between the plates is 0À6#. The rim increases the directivity or gain, and reduces the side lobe levels of the aerial. The waveguide 5 is circular, and protrudes a distance of #/4 into the cavity 4, but in other embodiments it is rectangular, and it may be flush with the larger plate (Figs. 1, 2, 5a, 6a, 7a, not shown). Either or both of the plates may be rectangular instead of circular. A block of rigid plastic foam or of other solid low-loss dielectric material may be fitted into the cavity 4 and support the smaller plate 2 (Fig. 8, not shown). Alternatively, a hollow thermo-plastic or glass reinforced plastic moulding may be secured to the rim 3 of the plate 1 and the smaller plate 2 be supported on its inside or outside surface (Fig. 9, not shown). In another embodiment, the waveguide 5 is expanded into an H-plane sectoral horn 9, Fig. 11. The plates 1, 2 are rectangular in shape and rim portions 3 are formed on the longer edges of the plate 1. In a further embodiment, shown in Fig. 13, a slotted waveguide 11 provides a feed for the cavity 4. The plates 1, 2 and the rim portions 3 are as in the previous embodiment. In addition, two metal plates may be added either side of the slots and normally to the larger plate in which the slots are cut. The additional plates may project a distance #/4 into the cavity 4.
Patent GB-1119410-A (GB)
Title: Improvements relating to transmission line current measurement
Inventor: WEBB PETER WALTER
IPC: G01R33/032
Filed: 1965-12-08
Abstract: 1,119,410. Current measurement; magnetometers. BRITISH AIRCRAFT CORP. (OPERATING) Ltd. Dec. 8, 1966 [Dec. 8, 1965], No. 52097/65. Headings G1A, G1N and G1U. In a system for measuring current in a high voltage power line, the magnetic field produced by the current is used to produce the Faraday effect in a film of ferro- or ferrimagnetic material adjacent the line, so as to rotate the plane of polarization of a polarized light or microwave beam passing through the material. In a system using a light beam, the beam 1 is polarized at 3 and then passed through an iron film 5 which is 0À001 cm thick and lies in the field of conductor 6. The beam after reflection at 7 is rotated again by a second passage through the film and then passed through an analyzer 9 to a photo-detector 10. The amount of rotation of the analyzer to give a minimum detected signal measures the strength of the current. Alternatively a polarized microwave beam may be received at the open end of a circular waveguide 5, Fig. 2 containing a ferrite rod (4) in the field of the conductor 6. The polarized beam is reflected from the short circuited end of the guide to pass again through the rod before being radiated to be received at an aerial (7), whereafter its rotation is analyzed.