baber/WOPTO huggingface dataset:
Patent GB-1388708-A (GB)
Title: Process for the manufacture of phenylhydrazine
IPC: C25B3/25
Filed: 1972-11-17
Abstract: 1388708 Phenylhydrazine HOECHST AG 17 Nov 1972 [20 Nov 1971] 53245/72 Heading C2C Phenylhydrazine is produced by cathodically reducing diazoaminobenzene in a diaphragm cell having a solid cathode, the catholyte including diazoaminobenzene in a diluent aniline is also obtained.
Patent GB-1363168-A (GB)
Title: Refuse loaders
IPC: B65F3/20
Filed: 1972-11-17
Abstract: 1363168 Refuse vehicle KYOKUTO KAIHATSU KOGYO KK 17 Nov 1972 [8 May 1972] 53381/72 Heading B8E A refuse vehicle 1 has a tailgate structure 2 provided with a sweep panel 6 to compress and feed refuse from an opening 4 into the main storage compartment. The panel 6 is secured to a shaft 12 having rollers 14 running in rails 11. A first actuating ram 7 is pivoted at 13 to the body and to the shaft 12 at the inner edge of the panel 6 while a second ram 8 pivoted at 15 to the tailgate has its piston-rod pivotally connected by a link 9 to a pivot 16 and by a link 10 to the panel 6 at 6<SP>1</SP> outwardly of the shaft 12. An auxiliary articulated inextensible link 41 connects the shaft 12 and the pivot 81. A hydraulic circuit, shown, by control valves so actuates the rams 7, 8 that the panel 6 is caused to move down to contact its tip with the bottom 5 of the tail gate and then to compress and move the refuse into the vehicle body 1 before returning to the original position. If both rams are extended until the link 41 straightens to lock the mechanism further extension of the ram 7 raises the tailgate to allow vehicle emptying.
Patent GB-1043744-A (GB)
Title: Apparatus for use when it is desired to curl hair
IPC: A45D4/16
Filed: 1963-04-23
Abstract: 1,043,744. Electric heating. A. B. PEDERSON. April 23, 1963, No. 53501/65. Heading H5H. Indirectly heated hair curling apparatus comprises a thermostatically controlled resistance heating element in a metal casing having a plurality of heat-transfer pins mounted on the top plate and adapted to fit into the metal sleeve of a curler as described in Specification 1,043,743.
Patent GB-536851-A (GB)
Abstract: 536,851. Agglutinated fibrous sheet materials. INTERNATIONAL LATEX PROCESSES, Ltd., TAYLOR, S. D., MADGE, E. W., and MURPHY, E. A. Feb. 7, 1940, No. 2358. [Class 140] [Also in Group V] Cushioning material comprises sponge-like or cellular rubber made directly from an aqueous rubber dispersion, e.g. latex foam, and having therein in the direction of the normal load column-like structures of thin open-network material made by compacting into sheet form loosely intermingled springy fibres &c., e.g. horsehair, pighair, sisal, glass wool, flexible viscose or other cellulosic or artificial resinous fibres, treated with a resilient adhesive, e.g. an aqueous dispersion of vulcanized or unvulcanized natural or artificial rubber, co-agulated, or waste rubber &c. or concentrates as disclosed in Specifications 219,635 and 290,313, [both in Class 70], or rubber cement, cellulose derivative, or a flexible glue. The fibre may be teased into laminar form, sprayed with latex &c. dried, compacted by repeated calendering wound to form tubes, helices &c. and united with the latex foam, e.g. as linings for cavities by slipping such tubes over projections of the mould lid. The rubber of the fibre and the latex are preferably vulcanized together. Alternatively the tubes may be attached together to form a honeycomb structure and submerged in latex foam.
Patent GB-1417846-A (GB)
Title: Device for cold production
IPC: F24F5/00
Filed: 1972-11-22
Abstract: 1417846 Space cooling units INTERNATIONAL PROMOTIONS & ENG SA 22 Nov 1972 [10 Dec 1971] 53986/72 Heading F4V [Also in Division H1] A device for cold production comprises a rotary Peltier effect thermoelectric component 101 having two coaxial flanges 114, 115 whose outwardly disposed faces are respectively hot and cold and between which are provided a plurality of thermocouples 113 attached between the respective flanges; thermal exchange blading 102 being supported edgewise on the respective faces of the flanges in the manner of the radial vanes of the rotor of a ventilating fan or turbine, and air propulsion means adapted to be driven with the Peltier effect component to circulate air through the thermal exchange blading of both faces of said thermoelectric component. A space cooling unit comprises a casing 171 having an integral flange 172 and held in an opening in a wall or window pane by a separate flange 173, room air being drawn through a duct 176, cooled, and returned via ports 177, and outside air being drawn through a grid (178, Fig. 8), heated, and returned via ports 174.
Patent GB-1446570-A (GB)
Title: Non-woven fabrics and the production thereof
IPC: D04H1/541
Filed: 1973-11-26
Abstract: 1446570 Non-woven fabrics and rods CHISSO CORP 26 Nov 1973 [25 Nov 1972] 54741/73 Heading D1R A method of producing a porous non-woven fibrous fabric or rod comprises forming a fibrous structure containing at least 10% by weight of side-by-side composite crimped fibres having not more than 12 crimps/inch and obtained by stretching unstretched side by side composite fibres consisting of a first component composed at least mainly of crystalline polypropylene and a second component composed at least mainly of another olefin polymer or polymers, said second component having a melting point at least 20C below that of the first component and a melt flow rate from 1.5 to 5 times that of the first component, at a stretching temperature not more than 20C below the m.p. of the lower melting component and in a stretching ratio of 3 or more; and heat-treating the structure to a temperature above the m.p. of the lower melting component but below the m.p. of the higher melting component. The second component may form 40 to 70% by wt. of the composite fibres. Their cross section is determined by the melt flow rate ratio (M.F.R.R.) of the two components. For equal proportions of the two components a M.F.R.R. of 1 gives a filamentary cross section of two semispheres. As the M.F.R.R. increases the second, more flowable component occupies a larger proportion of the filament surface (60% at M.F.R.R.=1.5 and 85% at M.F.R.R. = 5), ultimately becoming a sheath. The increased contact area increases the resistance to separating the two components. The hot drawing produces 5 to 12 crimps/ inch in the fibres (up to 30 per inch) in comparative examples). In example 4 the fibres of a tow are given 10 zig-zag crimps/inch in a stuffer box, 4 such tows are formed into a rod by passage through a heated tube and then a 20C cooling tube. The fibres of the rod have 5 U-shaped crimps/inch. The second component may comprise a low pressure polyethylene of melt index 9 to 34 or an atactic polypropylene of molecular wt. 30,000 to 100,000 and m.p. 100-140C, or a mixture of these. In example 4 5% of atactic polypropylene of molecular wt. 60,000 is added to the crystalline polypropylene (component 1) and the low pressure polyethylene (component 2). The bicomponent fibres may be blended with fibres of cotton, wool, viscose rayon, cellulose acetate, polyolefin, polyamide, polyester, polyacrylonitrile, polyacrylate, polyvinyl alcohol, glass and asbestos. Their latent crimpability should be equal to or less than that of the composite fibres. The fibres are bonded by heating with steam, hot air or passage through a heated tube. The fabrics have a void space of 96.5 to a 7.8% (94.4 to 95% for the comparative examples).
Patent GB-1412268-A (GB)
Title: Electroluminescent devices
IPC: H05B44/00
Filed: 1972-11-28
Abstract: 1412268 Electroluminescence DEFENCE SECRETARY OF STATE FOR 31 Aug 1973 [28 Nov 1972] 54853/72 Heading C4S A device comprises e.1. material having a high resistivity region produced by applying a forming voltage across the material and means for applying unidirectional pulses with a height greater than the maximum forming voltage and a pulse length such that the brightness B # #B M  Î B DC  where B M  and B Dc  are maximum brightness and brightness with 5 millisecond pulses respectively. The use of such pulses lengthens active live and increases contrast between lit and unlit areas. The e.l. material comprises ZnS : Mn particles coated with Cu embedded in a binder or a thin phosphor film vapour deposited on a glass substrate. To produce the region of high resistivity near the anode a potential of 25 V is applied for 2-3 minutes when the phosphor becomes weakly emitting. A steadily increasing voltage is then applied at constant power. Alternatively the forming voltage may be pulsed. A continuous layer or elements of the e.l. material are placed between crossed conductor arrays to form a display panel which is operated in the line scan mode. Pulses are applied using circuits each comprising a pair of transistors and a diode or a transistor and capacitor.
Patent GB-1222069-A (GB)
Title: Preparation of foamed polymeric materials
Inventor: GRAHAM NEIL BONNETTE
IPC: C08J9/14
Filed: 1967-12-05
Abstract: 1,222,069. Paper laminate. CANADIAN INDUSTRIES Ltd. 11 Nov., 1968 [5 Dec., 1967], No. 55309/67. Heading B5N. [Also in Division C3] In Example 1 foam cored paper surfaced laminates are produced in which the foam is made from a foamable composition including at least one polymerizable dihydropyranyl group-containing compound of the formula where n is 2 or 3, R is hydrogen, an alkyl radical or the -CHO radical, and A is a linking radical containing an ether, ester or carbamate group and having a valence equal to n; an organic isocyanate; a compound other than an organic isocyanate which is reactive with dihydropyranyl groups; a Lewis acid catalyst (except complexes of BF 3  with OH compounds); and a volatile foaming agent; the proportions of ingredients being such that the number of dihydropyranyl groups is always  gteater than the number of dihydropyranyl group-reacting groups, the organic iysocyanate ingredient does not exceed 10% by weigth of the composition, the catalyst comprises 0À005% to 2À0% by weight of the composition, and the foaming agent comprises 2À0% to 30À0% by weight of the composition, by (1) forming a first portion comprising at least one polymerizable dihydropyranyl groupcontaining compound and the dihydropyranyl group-reactive compound other than an organic isocyanate; (2) forming a second portion free of active hydrogen-containing compounds comprising the organic isocyanate and Lewis acid catalyst;  (3) adding the volatile foaming agent to one or both of said portions; (4) mixing the first portion with the second and (5) allowing the mixture naturally to foam.
Patent GB-1311398-A (GB)
Title: Accident warning system
IPC: G08G1/09
Filed: 1971-11-30
Abstract: 1311398 Road traffic signals L KAMB 30 Nov 1971 [4 Dec 1970] 55418/71 Heading G4Q In an accident warning system for motorways, posts carrying warning lamps are arranged at intervals along the motorway and each post is provided with a switch which brings into operation the lamps along a predetermined length of motorway in a direction contrary to that of the traffic flow. In the system described, closing of a switch reports the position of an accident to the police, and the posts also carry fog lamps which are operated when necessary by means of a photo-electric switch. In a direct current system, Fig. 2 (not shown), a relay is mounted on each post for switching on the warning light, another relay is used for switching on the fog lamp, and a diode and resistance are provided in the reporting line. The warning lamps may be of the flashing rotating beacon type. Diodes are arranged in lines connecting the warning lights for the unidirectional transmission of current to adjoining warning lamps which glow progressively less brightly and flash at progressively lower frequencies. In an alternating current system, Fig. 3 (not shown), relays and resistances replace the diodes in the lines to adjacent warning lamps. Part of the circuit components may be arranged in a distributer box mounted in a concrete socket a few yards away from the road, safety fuses being provided in all conductors leading from the box.
Patent GB-1421120-A (GB)
Title: Gas liquefier
IPC: F25J1/00
Filed: 1971-12-01
Abstract: 1421120 Liquefying gases BOC INTERNATIONAL Ltd 27 Feb 1973 [1 Dec 1971] 55809/71 Heading F4P [Also in Division G1] In an apparatus for liquefying gases, e.g. helium, having a reservoir 4 for collecting the liquefied gas, unliquefied gas is fed via line 32 to the liquid in reservoir 4 through a valve 30 controlled by a level sensor 14, 16, 18, so that some liquid may be evaporated and the level of liquefied gas regulated. Gas is compressed at 2 fed through heat exchangers 6, 8, 10, expanded at 12 to effect partial liquefaction the remaining gas returning via h.e.s 10, 8, 6 to the compressor. A branch line 24 including expansion turbine 28 provides further cooling. The line 32 may terminate in a coil 34 to reduce the risk of explosion. The gas may also be methane, hydrogen or natural gas.
Patent GB-1335837-A (GB)
Title: Recording systems
IPC: B41J2/44
Filed: 1970-11-25
Abstract: 1335837 Facsimile apparatus RICOH KK 25 Nov 1970 [1 Dec 1969 8 Dec 1969] 55953/70 Heading H4F Electric discharge recording apparatus comprises scanning heads 1a, Fig. 1, 2 and 3, disposed at the ends of arms 1 which rotate about a shaft 10. Each head comprises a light source 5 which illuminates an original 8 which is moved on a transparent support 13 past an arcuate slot 14a (Figs. 1 and 3) in a shield plate 14, the reflected light being detected by a photo-electric tube 2, the output of which is amplified and fed to a discharge electrode 4 which scans in an arcuate path across a moving recording medium 9. The light source, photo-electric tube and discharge electrode are only connected to a power source when terminals 23a, 23b and 23c contact contacts 24a, 24b and 24c disposed on the stationary bearing member 12, thus only the head which is scanning across the moving original and recording medium is actuated. The discharge electrode 4 in each scanning head may be displaced from immediately below the optical scanning system to a position such as 4A, the magnification of the recorded copy thus being changed. Instead of having a light source in each head a light source may be disposed above the original i.e. a transparent original. The original may be placed in a transparent holder which is displaced along the top of the housing 11. Instead of moving both the original and recording paper in synchronism with each other, they may be held stationary while the rotating arm assembly is moved. In a second embodiment, Fig. 5, an original 111 illuminated from above is scanned and projected on to a screen 105 (e.g. a glass plate with a matt surface), the scanning being effected by mirrors 115 and 116 which are moved (speed ratio 1: 2) to positions 115A and 116A, the light therefrom being focused by lens 114, e.g. a zoom lens, on to the screen 105 via stationary mirrors 117 and 118. A bulky original such as a book may thus be copied. Change in magnification of the resulting copy on the recording paper may be effected by displacing the discharge electrodes and by varying the speed ratio between the movable mirrors and the recording paper.
Patent GB-1235279-A (GB)
Title: Thin-layer chromatography apparatus
IPC: G01N30/94
Filed: 1969-11-19
Abstract: 1,235,279. Thin layer chromatography apparatus. BOEHRINGER MANNHEIM G.m.b.H. 19 Nov., 1969 [21 Nov., 1968], No. 56661/69. Heading B1X. A thin layer chromatography "sandwich" chamber formed from coated element 2 and cover plate 4, and sealed at the edges by longitudinally slit tubes 3 of rubber or plastics material is supported for descending chromatography on the adjustably inclined frame illustrated. Paper strips 5 in contact with the active layer are arranged to dip at the upper edge into trough 9 filled with eluent and at the lower edge to provide a run off into a drain tray (not shown). In other embodiments, side members (7, 7a) are held in position either by an adjustable diagonal strut (16), or by releasable transverse members (21, 22) (see Figs. 4 and 5, not shown). Element 2 and cover plate 4 are suitably of glass while the support frame may be made from transparent plastics. The active material with which element 2 is coated is generally a gel or an ion exchanger.
Patent GB-1454553-A (GB)
Title: Counterflow isotachophoresis
IPC: G01N27/447
Filed: 1973-12-11
Abstract: 1454553 Isotachophoresis LKB-PRODUKTER AB 11 Dec 1973 [19 Dec 1972] 57444/73 Heading C7B In counterflow isotachophoresis, the position of the sample is fixed in the column by adjustment of the counterflow pressure and/or applied voltage to obtain a constant current through the column. As described, a current differentiator is used to detect the required constant current, and is incorporated in a supply having a constant voltage and/or constant current source. The sample position may be detected visually or automatically using a thermal, potential, U-V or conductivity detector. The process operates under self-regulating equilibrium conditions. Appropriate counterflow and/or voltage values may be predetermined to give a required position (indicated by the value of the constant current) and may be then used as starting values.
Patent GB-1285350-A (GB)
Title: Cyclopropane carboxylic acid derivatives
IPC: B29C37/00
Filed: 1969-11-26
Abstract: 1285350 Cyclopropane carboxylic acid derivatives ROUSSEL UCLAF 26 Nov 1969 [26 Nov 1968] 57940/69 Addition to 1207371 Heading C2C The invention comprises a method of making cyclopropane carboxylic acid derivatives of the formula in which R<SP>1</SP> denotes the grouping -CH : C(R 2 )R 3 , R 2  and R 3  which may be the same or different each represent an alkyl group of 1-6 carbon atoms or together represent an alkylene chain containing 4-6 carbon atoms. The method comprises the reaction of a compound of the formula in which R 1  denotes a hydrogen atom or an alkyl group of 1-4 carbon atoms, with a phosphonium salt containing the grouping in which R 2  and R 3  are as defined above, in the presence of a strong base and (when R 1  denotes an alkyl group) hydrolysing the resulting ester. A number of phosphonium salts and strong bases are specified. The starting materials of the second formula above are obtainable as described in parent Specification. In Example 1, 3,3- dimethyl - 2 - cyclopentylidenemethyl - cyclopropane - 1 - carboxylic acid is prepared by reacting 3,3 - dimethyl - 2 - formylcyclopropane- 1-carboxylic acid with triphenylcyclopentyl phosphonium bromide in the presence of butyl lithium in hexane solution Other examples are given also.
Patent GB-593317-A (GB)
Abstract: 593,317. Wells. MOORE, T. F. June 13, 1945, No. 15027. Convention date, Dec. 4, 1944. [Classes 68 (i) and 85] Relates to well points, particularly for use in systems for draining water or other fluids from the ground wherein a number of well points are sunk into the ground, as by jetting, and connected to headers to which suction apparatus is applied to remove the fluid. The well point comprises a tubular body 1 with diametrically opposed rows of openings 3 and a surrounding screen 14 spaced as by a spiral of asbestos cord 15. The tubular body 1 has an upper closure 20 fixed as by welding, and a lower closure 22 held by a jetting tip 8 provided with a ball float valve 11 and with cutting teeth 13 which act by rotation or oscillation to assist in sinking the well point. Spaced tubes 24 are welded &c. to the lower closure 22 and held to the upper closure 20 by threaded sleeves 26, and serve first for supply of jetting fluid and afterwards for delivery of well fluid. The body 1 also contains float tubes 29, 29<1>, connected by bolts 31 and spacers 31<1>; the float tubes have little buoyancy and the tube 29<1> is connected through links 32, 36, 42 to an upwardly closing valve 30, whereby, when the liquid level falls, the passage to the tubes 24 is interrupted and the pumps &c. are prevented from sucking air. When jetting, the pressure of the jetting fluid also tends to close the valve 30, which is so placed as to be guided by the inner surface of the jetting tip 8. The tubes 24, diaphragm 22, float tubes 29, 29<1> and valve 30 are removable as a unit. U.S.A. Specifications 2,164,253 and 2,176,540 are referred to.
Patent GB-1362700-A (GB)
Title: Excipient for shaping medicaments into a solid dosage form that  can be readily disintegrated in the human body
IPC: A61K47/38
Filed: 1971-12-29
Abstract: 1362700 Mixed hydroxyalkyl; alkyl cellulose ethers SHINETSU CHEMICAL CO 29 Dec 1971 [29 Dec 1970] 60339/71 Headings C3A and C3F [Also in Division A5] An excipient for use in medicinal compositions comprises a hydroxyalkyl alkyl cellulose having, per anhydrous glucose unit, from 0À05 to 1À00 of each of the alkyl and hydroxyalkyl groups. The total number of groups is from 0À10 to 1À30. Preferred excipients are hydroxypropyl methylcellulose, hydroxyethyl ethylcellulose, hydroxybutyl methylcellulose and hydroxybutyl ethylcellulose. Two or more of these may be mixed. Preferably the excipient is used in the form of particles no greater than 100Á and having an apparent density of at least 0À5 g./cc. The preferred viscosity, as measured in 2% by wt. solution in 10% caustic soda is from 5 to 100 c.p.s. at 20‹ C. In the examples tablets are made up from compositions containing binders such as polyvinylpyrrolidone, polyethylene glycol and hydroxypropyl cellulose, lubricants such as talc and calcium stearate, additional excipients such as starch and lactose and medicaments such as acetal salicylic acid, ascorbic acid, Mefenicine (Registered Trade Mark) and caffeine. Other coating agents such as sugar may be added. The tablets containing the excipient of the invention are stated to have superior hardness and to disintegrate readily in water. The compositions are also stated to have superior compressibility. The excipient compounds may be produced by known methods, in particular by reacting alkali cellulose with an alkyl chloride and an alkylene oxide, simultaneously or successively.
Patent GB-1248013-A (GB)
Title: Light fixture
IPC: F21V29/00
Filed: 1969-05-30
Abstract: 1,248,013. Floodlamps. ESQUIRE Inc. 30 May, 1969, No. 60366/69. Divided out of 1,248,011. Heading F4R. The subject matter of this Specification is substantially the same as that disclosed in Specification 1,248,011 but the claims relate to the means for supporting the lamp on a mast.
Patent GB-610399-A (GB)
Abstract: 610,399. Domestic fireplaces. PARK FOUNDRY (BELPER), Ltd., and TUTTON, W. G. G. May 2, 1946, No. 13410. [Class 126] A vertically movable screen is connected by links to the front of a domestic solidfuel grate, the screen when raised forming an upper extension of the grate when slow combustion is desired. The grate has a cast-iron front a which carries a firebrick lining d: a plate f extends across the front and is pivoted at i, forming a link between the grate front a and a vertically-moving screen e, being pivoted to the latter at h. A stiff wire rod m which acts as a supplementary link is pivotally supported by lugs n on the front a and engages the ends of the screen e by pivots p. Specification 580,799 is referred to.