baber/WOPTO huggingface dataset:
Patent GB-1053800-A (GB)
IPC: H01B3/16
Abstract: 1,053,800. Transformers. BROWN, BOVERI & CO. Ltd. Dec. 9, 1964 [Dec. 11, 1963], No. 50044/64. Heading H1T. A transformer or inductor is housed in a sealed container filled with dielectric vapours which remain unsaturated over the entire operational temperature range of the transformer or inductor and which are further characterized in that at least some of the vapours are electro-negative and some of the electro-negative vapours have a molecular weight exeeding 200. The electro-negative vapours are formed from organic fluorine compounds that are liquid at room temperature. This liquid is purified and then evaporated in the sealed container at the lowest operational working temperature of the transformer or inductor, excess liquid not evaporated at this temperature being drawn off. Finally the pressure in the container is brought up to just below atmospheric by the introduction of an inert gas, e.g. nitrogen. Details are given in the Specification of the organic fluorine compounds that may be used and the manufacture of the dielectric vapours themselves.
Patent GB-1225248-A (GB)
IPC: B62B3/06
Filed: 1967-07-06
Abstract: 1,225,248. Pedestrian-controlled industrial trucks. LANSING BAGNALL Ltd. 28 June, 1968 [6 July, 1967], No. 31150/67. Heading B7H. In a pedestrian-operated industrial truck having a pair of control levers 19 carried by a steering and control arm 12 at one end of the truck and connected through mechanical linkage 16 to direction and speed control means arranged such that movement of the linkage 16 in either direction from a neutral position first determines the direction and then the speed of movement of the truck, a head 40 at the end of the arm 12 is slidable therealong against spring resistance, and the linkage 16 includes a pair of levers 23 which project into the path of movement of stops 49 in the head 40 so that when the truck is moving with the arm leading the linkage 16 is actuated to reverse the truck should the head 40 be displaced towards the truck by contact of the head with the operator's body. The control levers 19 are secured to a common shaft 22 carrying the levers 23 one of which is bonded by a spring 60 to urge the control levers and linkage 16 into the neutral position and is coupled through a link rod 24 to a bell-crank 26 which actuates electric motor control means through linkage extending along the transverse horizontal axis 13 of pivot means about which the arm 12 can move in a vertical plane. A spring 48 is arranged to urge the head 40 along the arm 12 into an inoperative position wherein the levers 23 are free to move in a cavity 46 between the stops 49 so that control of the truck by the levers 19 is unimpeded. An aperture 41 in the head 40 forms a handgrip whereby the head may be displaced in either direction along the arm 12 for actuating the linkage 16, so that the head 40 constitutes control means alternative to the levers 19 for initiating and reversing movement of the truck. Laterally-projecting handles 20 are provided on the arm 12, and raise and lower buttons 70 control vertical displacement of a load platform on the truck.
Patent GB-1226246-A (GB)
IPC: C08B17/04
Filed: 1969-03-24
Abstract: 1,226,246. Continuous nitration of cellulose. ETAT FRANCAIS. 24 March, 1969 [27 March, 1968], No. 15343/69. Heading C3A. Nitrocellulose is produced continuously by a process wherein cellulose is continuously passed into a first reaction zone in which it is impregnated with a sulphuric acid / nitric acid mixture with vigorous agitation and then the reaction mixture is passed to a second nitration zone in which nitration is completed with a degree of agitation which minimizes modification of the physical structure of the cellulose, the residence time of the cellulose in the first reaction zone (e.g. 1¢ to 2¢ minutes) being less than in the second reaction zone (e.g. 15 to 40 minutes). An apparatus for the above process comprises an impregnation vessel 1 and a reaction vessel 2 connected in series, the impregnation vessel comprising first 1a and second 1b tanks intercommunicating at the bottom of each tank via a connecting pipe 1c, the first tank being provided with inlets for the cellulose 1e to be nitrated and for the acid mixture 1g, the upper part of the second tank being provided with an outlet 1h connected to the reaction vessel, at least one stirring device 5, 6 located in each tank and an impeller 3 located at the bottom of the first tank opposite the connecting pipe leading to the second tank and arranged to convey the reacting mixture from the first to the second tank via the connecting pipe. The reaction vessel may be a rotating cylindrical, horizontally disposed, reactor having an internal helical band which serves to divide the reacting mixture into independent portions which are moved forward at a uniform speed while the particles are gently agitated in a plane perpendicular to the direction of movement.
Patent GB-1228804-A (GB)
IPC: G01N3/04
Filed: 1968-07-01
Abstract: 1,228,804. Grips for holding test pieces. MASCHINENFABRIK AUGSBURG - NURNBERG A.G. July 1, 1968 [July 1,1967], No.31272/68. Heading G1S. A test piece 5 is held between grip heads 1, 2, each head having opposed cylinders 6, 7 provided with hydraulic pistons 8, 9 normally held retracted by springs 12, 13. Differential pistons 16, 17 are operated to move the grip head pistons. (For Figure see next page)
Patent GB-1228838-A (GB)
IPC: B60V1/00
Filed: 1968-12-20
Abstract: 1,228,838. Air cushion vehicles. SOC. D'- ETUDES ET DE DEVELOPPEMENT DES AEROGLISSEURS MARINS TERRESTRES ET AMPHIBIES. 20 Dec., 1968 [22 Dec., 1967], No. 60595/68. Heading B7K. A sidewall air cushion vehicle has between the side walls chambers bounded by flexible skirts, the skirts and/or the side walls being adjustable in height in order to make the vehicle amphibious. In Fig. 3, the sidewall structures 13a, 13b are movable in a guide 14 by jacks 15a, 15b, and also have a spindle 16 sliding in a guide 17 to increase rigidity. Fluid cushions are contained by first skirts 18 each with an auxiliary skirt 19 which has a bellows part 21 at the top held by a ring 23 and extendable by jacks 24a, 24b. In the embodiment of Figs. 1, 2 the skirts of chambers 5 may be similarly adjustable and the side walls 6a, 6b are pivotable about pivots 7a, 7b by jacks 10. The walls are hollow to act as fuel tanks and each may be divided into a number of elements. The non-circular skirts have tie rods 12. In the embodiment of Fig. 4 (not shown) a skirt (30) is formed of one or more than one superposed and interconnected substantially horizontal hollow collapsible annuli (25) extended downwardly by a frusto-conical portion (26) which may be double thickness and inflatable. The annuli (25) may be inflated or evacuated so that the skirts may be raised or lowered as required. A similar system of collapsible and inflatable elements may also be used for lifting or lowering a wall structure (28), Fig. 5 (not shown) or the wall may be raised or lowered by means of a vacuum source connected to resilient wall compartments. In a further embodiment, Fig. 6 (not shown) a conical or part conical and part cylindrical flexible non- extensible skirt (33) is attached to an annular support (34) to which four lifting cables (35) are attached whereby the skirt may be raised or allowed to move down under cushion air pressure. Sidewall structures (43) may be fixed or be adjustable as in previous embodiments, being raised when the skirt (33) is lowered for land operation.
Patent GB-1229531-A (GB)
IPC: C08F14/18
Filed: 1969-03-12
Abstract: 1,229,531. Fluoro-olefine polymers. FARBWERKE HOECHST A.G. 12 March, 1969 [12 March, 1968], No. 13012/69. Heading C3P. A fluorine-containing homo- or copolymer is prepared by polymerizing one or more fluorinecontaining olefines in an aqueous medium in the presence of, as catalyst, an acid derived from a metal of sub-group V B , VI B  or VII B  of the Mendeleeff Periodic Table, a salt thereof, a compound which forms such an acid or salt under the conditions of polymerization or a mixture of two or more such compounds. In the examples tetrafluoroethylene, trifluorochloroethylene, and hexafluoropropylene are polymerized in the presence of ammonium chloride, desalted water, potassium permanganate and sodium dihydrogen phosphate.
Patent GB-1231729-A (GB)
IPC: H01C10/10
Filed: 1969-10-06
Abstract: 1,231,729. Resistance transducers. BATTELLE DEVELOPMENT CORP. Oct. 6, 1969 [Oct. 21, 1968], No.48919/69. Heading G1N. A pressure-sensitive resistance transducer is formed from resilient material with a progressively collapsible skeletal structure e.g. latex foam, whose surfaces are coated with a layer of conductive material, the resistance between opposing external faces being decreased in compression and increased in tension. Details of suitable resilient materials and coatings are given. An element of pressure-sensitive resistance material 80, Fig. 10, is fitted with end-plate electrodes 89, using conductive cement 88. Modifications include a solid spring core Figs. 11, 22 (not shown), a bellows housing Fig. 12 (not shown) and a Bourdon tube arrangement for measuring fluid-pressure Fig. 13 (not shown). A transducer covering two load ranges is formed by stacking one resistance element on top of another, the elements having different modulii Fig. 21 (not shown). A transducer unit may include two active resistance elements 135, 136 Fig. 14, and two passive resistance elements 131, 132 for ambient temperature compensation, inter-connected as a bridge network, or four active elements in a bridge network assembled to act differentially to an applied force Figs. 16, 17 (not shown).
Patent GB-1232504-A (GB)
Filed: 1968-08-20
Abstract: 1,232,504. Magnesium aspartate malate. P. SERVIERE. 20 Aug., 1968 [23 Aug., 1967], No. 39749/68. Heading C2C. [Also in Division A5] Novel magnesium aspartate malate of formula is prepared either by mixing equimolar proportions of magnesium malate and magnesium aspartate in water and crystallizing out the salt or evaporating the water, or by reacting in suitable proportions MgO, malic acid and aspartic acid.
Patent GB-1251007-A (GB)
IPC: F16D65/22
Filed: 1970-05-14
Abstract: 1,251,007. Internal shoe drum brakes. BENDIX CORP. 14 May, 1970 [18 June, 1969], No. 23480/70. Addition to 1,222,936. Heading F2E. In an internal shoe drum brake as described in parent Specification the cover member comprises a frusto-conical wall 58 having a rip portion 54 which engages a flange 50 of an annular retainer 47 carried by the housing when the brakes are applied, the wall being divided into a plurality of relatively movable portions 64 by slits 66 which flex so that heat shield 56 assumes the fully extended position shown in Fig. 3.
Patent GB-1251484-A (GB)
IPC: F01K21/00
Filed: 1970-03-26
Abstract: 1,251,484. Vapour power plant.  W. L. MINTO. March 26, 1970 [Sept. 10, 1969], No. 14671/70. Heading F1Q. A method of converting heat into motive power in a vapour power plant comprises heating a vapourizable liquid to a temperature not exceeding its critical temperature at a pressure not less than the vapour pressure of the liquid, reducing the pressure of the heated liquid to evaporate a fraction thereof while leaving the remaining fraction in a liquid state, separating the liquid and vapour fractions, returning the liquid fraction to the heating means 11, feeding the vapour fraction to a vapour engine 13 condensing the vapour output of the engine and returning the condensate to the heating means. As shown the plant comprises a heat exchange unit 18, a pressure reducing valve 19, a vapour separation 12, a condenser 14 and a feed pump 15. A number of suitable working fluids are specified.
Patent GB-1252168-A (GB)
IPC: G01K13/08
Filed: 1969-01-14
Abstract: 1,252,168. Measuring temperature electrically. COLTRON INDUSTRIES Inc. Jan. 14, 1969 [Jan.18, 1968], No.2188/69. Heading G1N. [Also in Division G3] The temperature of a rotatable drum 201, Fig. 6, is sensed by a resistance wire 203 embedded in the surface, which is connected to a pulse frequency generator 209 coupled by rotating coil 215 and stationery coil 216 to indicator 170 and to a frequency detector 225 where the pulse frequency is compared with a reference frequency from oscillator 227, the difference controlling amplifier 223 feeding the heater coils 205. The power for oscillator 209 is supplied via dip rugs 210, 211 or via a further pair of coils similar to coils 215, 216. Two temperature sensitive resistors extending over 360 degrees may be used, the one 317, Fig. 10, controlling the frequency of a relaxation oscillator including transistors Q1-3 for supplying a monitoring pulse frequency signal, and the other 312 in a bridge circuit with pre-set resistors 309, 310 controlling the firing angle of SCR's 305, 307 feeding the heater coils 301.
Patent GB-1252849-A (GB)
IPC: A01G9/10
Filed: 1970-10-16
Abstract: 1,252,849. Bulb containers. FARBENFABRIKEN BAYER A.G. 16 Oct., 1970 [6 Nov., 1969], No. 49311/70. Heading A1E. In a process for the cultivation of bulbs use is made of a panel of low density hydrophilic polyurethane foam comprising a first part Fig. 1, having through holes a into the lower ends of which bulbs d are pushed tip first until their root attachment region is flush with the lower surface. To this surface a second part a, Fig. 3, is attached mechanically or with adhesive. The second portion retains the bulbs and is penertated by their roots as they grow after the foam is moistened.
Patent GB-1257171-A (GB)
IPC: B60P1/28
Filed: 1968-08-28
Abstract: 1,257,171. Tipping vehicles. A. E. WEBB, E. A. WEBB, and R. A. WEBB, [trading as ALBERT E. WEBB & SONS]. 27 Aug., 1969 [28 Aug., 1968], No. 41065/68. Heading B7B. The sides of a tipping vehicle are constructed of upper and lower chord members of box section braced by vertical and diagonal box section braces forming a frame to which cladding such as plywood is secured.
Patent GB-1257556-A (GB)
IPC: G09F3/03
Filed: 1969-08-04
Abstract: 1,257,556. Packages. E. J. BROOKS CO. 4 Aug., 1969, No. 38943/69. Heading B8C. [Also in Division E2]  A plastics seal for the neck of a bag or the like comprises a housing 12 and an integral elongated shackle 10 provided with a plurality of spaced ridges 16 selectively engageable by a group of resilient fingers 30 within the housing each finger having a root portion integral with the housing and thickening towards a free end portion engageable with a shackle ridge to prevent withdrawal of the shackle from the housing. The housing has an integral ear 14 and is reinforced by internal longitudinal ribs.
Patent GB-1259077-A (GB)
IPC: C07C67/00
Filed: 1970-08-18
Abstract: 1,259,077. Difluorochlorobromomethane. KALI-CHEMIE A.G. 18 Aug., 1970 [13 Sept., 1969], No. 39774/70. Heading C2C. The invention comprises a process for producing difluorochlorobromomethane wherein difluoromonochloromethane is reacted in a reactor with excess bromine at 300-650‹ C., and the bromine and hydrogen bromide formed are removed from the product, the difluorochlorobromomethane being separated from the other components by fractional distillation, and either wherein difluorodibromomethane which forms as a by-product is continuously taken to a separate reactor, reacted therein with chlorine, whilst maintaining a molar ratio of difluorodibromomethane to chlorine of 1 : 0À1 to 1 : 2À0 at 300-600‹ C. and a residence time of 0À5-10 seconds, the reaction products thus obtained being then combined with the reaction products leaving the bromination reactor or wherein the difluorodibromomethane by-product is continuously recycled into the bromination reactor, chlorine being simultaneously added to the reaction mixture to maintain a molar ratio of chlorine to (CF 2 Br 2  + CHF 2 Cl) of 0À1 to 0À6 : 1.
Patent GB-1266024-A (GB)
IPC: B41M1/12
Filed: 1969-04-16
Abstract: 1,266,024. Printing processes. FUJI PHOTO FILM CO. Ltd. 16 April, 1969 [16 April, 1968; 25 June, 1968 (2); 18 July, 1968; 26 Sept., 1968; 17 March, 1969], No. 8025/71. Divided out of 1,266,023. Heading B6C. The subject-matter of this Specification is substantially the same as that of Specification 1,266,023 but the claims are directed to the leuco ink sheet.
Patent GB-1295998-A (GB)
IPC: G01L19/06
Filed: 1971-04-19
Abstract: 1295998 Pressure gauges; indicating apparatus DRESSER INDUSTRIES Inc 19 April 1971 [9 March 1970] 23167/71 Headings G1J, G1L In a pressure gauge the dial 10 of a suitable pliable transparent plastic material, is held in position by the inturned edge 26 of a casing 11, bearing against abutments 38 formed on the dial periphery, to press the dial in sealing engagement with an underlying gasket 30 but which will also allow the dial to flex and allow any excess pres-  sure occurring within the casing to escape between the periphery of the dial 10 and the gasket 30.
Patent GB-1305587-A (GB)
IPC: H01H51/28
Filed: 1970-02-24
Abstract: 1305587 Magnetic contact devices BRIGGS & STRATTON CORP 24 Feb 1970 40216/72 Divided out of 1305586 Heading H1N A contact unit has a pair of co-operating contacts in a sealed enclosure, one contact, for connection to the negative terminal of a D.C. circuit, being made of a material having melting and vapourizing temperatures at least about as high as those of tungsten and the other contact being made of a material having lower melting and vapourizing temperatures (e.g. molybdenum). The description relates to the contact unit of the parent application.
Patent GB-1307671-A (GB)
Title: Hose reel mechanisms
IPC: B64D39/02
Filed: 1969-03-04
Abstract: 1307671 Refuelling aircraft FLIGHT REFUELLING Ltd (P S MACGREGOR) 4 June 1970 [4 March 1969] 11396/69 Heading B7G [Also in Division B8] An air to air refuelling hose reel apparatus includes a constant tension spring motor 21 coupled to the hose reel 6 to apply a substantially constant tension to the hose during reeling in or out thereof. The motor 21 comprises four pairs of constant tension spiral springs 25 mounted on their individual bobbins and all windable on to a common hub in driving engagement with the hose reel 6, the springs being wound on to the hub to store energy during pay out of the hose and operative to apply a constant tension to the hose during refuelling. A motor 22 using the fuel as a driving fluid is in driving connection with the hose reel through a gear-box 23 sprag clutch 24, and is used to wind in hose against air drag force on a refuelling drogue at the free end of the hose, the motor being used as a pump to retard pay out of the hose which is effected by the air drag on the drogue. The motor or pump mode for the motor 22 is set by a valve 16 in parallel in the fuel supply circuit with a refuelling transfer valve 17 and a fuel jettison valve 18, all supplied from a fuel pump 3 driven by a ram air turbine 2, controllable in response to the pumped fuel pressure. Ratchet teeth 30 on the periphery of the reel 6 are engageable with a spring pawl 29 controlled by a mechanism 28 to brake the reel. Fluid pressure is applied to and exhausted from the mechanism 28 to release and engage the pawl 29 during hose wind in and when the hose is fully wound respectively. The mechanism is also operable by a roller engaging the spring 25 wound on the hub when sufficient spring layers have been wound during hose pay out, whereupon the reel is braked at full pay out. A further roller engageable with the accumulating layers of spring on the hub, is associated with control gear for reducing the pay out speed as full pay out of the hose is approached, and for actuating the refuelling transfer valve.
Patent GB-1310684-A (GB)
Title: Electrical switches
IPC: H01H9/18
Filed: 1969-08-12
Abstract: 1310684 Indicators for switches JOSEPH LUCAS (INDUSTRIES) Ltd 10 July 1970 [12 Aug 1969] 40191/69 Heading H1N A push-button switch has a transparent portion 14 and a reflective surface 19 allowing one or other of a plurality of legends 21 to be seen through the transparent portion depending on the position of the push-button. The reflective surface is provided by a triangular prism 18 and the appropriate legend 21 is illuminated by a lamp or the end of a light guide (not shown) at aperture 22. The switch has two or more positions determined by an indexing device 17 and comprises a bridging contact 15 engaging printed circuit or rivet contacts on an insulating panel 12.
Patent GB-1312701-A (GB)
Title: Container for bottles and the like
IPC: B65D1/24
Filed: 1970-04-30
Abstract: 1312701 Bottle crates FAIN SpA 30 April 1970 20849/70 Heading B8P A bottle crate formed from plastics sheet material comprises a top wall 1 with apertures 5 for the bottles, a grate structure forming a bottom wall and connected to the top wall by ribs 12 which define recesses for the bottles, and four continuous side walls. The grate structure shown comprises sleeves 13 connected to frustoconical membranes 10 which can receive the tops of bottles in a crate beneath, radial ribs 8 and 9, and circumferential ribs 11. The shape and arrangement of the membranes and ribs may be of various forms (Figs. 9 and 10, not shown). End walls 4 have handle openings with reinforced edges and with reinforcing ribs (20) and 21. The top and bottom walls have respectively stacking projections 24 and seats.
Patent GB-1315574-A (GB)
Title: Tape amount indicator for tape recorders
IPC: G11B27/34
Filed: 1971-10-04
Abstract: 1315574 Recording-tape cassettes; tapelength indicators CONTINENTAL COMMERCE CORP 4 Oct 1971 46163/71 Heading G5R A transparent cassette 11 contains a pointer 15 which is pressed, e.g. by a spring 17, against a tape coil so as to move over a scale 20 as the amount of tape in the coil changes. Scales may be marked on both sides and on the edge of the cassette 11 which may be of the usual generally rectangular form, Figs. 1 and 2 (not shown), or may have a curved edge portion 21 in the region of the scales.
Patent GB-1317303-A (GB)
Title: Gas heating system
IPC: F23N5/06
Filed: 1970-06-17
Abstract: 1317303 Gas heating systems for ovens THORN ELECTRICAL INDUSTRIES Ltd 15 June 1971 [17 June 1970 11 March 1971] 29448/70 Headings F4F and F4T To prevent a rapid escape of unburnt gas from an oven heating system, a gas burner 14 having a row of flame ports, an ignition device 20, 30 at one end and a heat sensor 29 operating a safety shut-off valve at the other end is fed with gas through a low capacity starting feed 12 which by-passes the shut-off valve and a high capacity main feed 13 in such a way that unless a flame propagates along the row of flame ports fed by the starting feed 12 and heats the bimetallic sensor 29 then the shut-off valve will not open and no gas will be supplied from the main feed 13. Ignition is effected by a permanent pilot jet 30 and a dual-flame jet 20 supplied by the starting feed which also supplies a second dual-flame jet 21 to heat the bimetallic sensor 29. Alternatively the jet 21 may be omitted and the main burner flame used, and the bimetallic detector may be replaced by a mercury flame detector. Adjustable restrictors are provided in the starting feed to accommodate different types of gas. The gas is supplied through a governor 10, timing control 45 and combined on/off and thermostatic valve 11 whereof the thermostat is by-passed by the starting feed 12. The control 45 initiates ignition after a preset delay and shuts off the supply after a preset cooking time. It may alternatively be located in the starting feed in which case a non-return valve should be provided upstream of the jet 21 to ensure proper shut down, or else the starting and main feeds may have separate or duplex injectors. The control 45 may also be replaced by a control in the starting feed which merely presets the ignition time.