baber/WOPTO huggingface dataset:
Patent GB-899933-A (GB)
Title: Improvements in or relating to optical slide projectors
IPC: G03B23/04
Filed: 1958-11-13
Abstract: 899,933. Projectors. KODAK Ltd. Nov. 13, 1958 [Nov. 14, 1957], No. 34138/59. Divided out of 899,932. Class 97(1). A slide projector adapted to receive a slide magazine and comprising two means, one for indexing the magazine and for transferring the slides to and from the projection gate and the other solely for indexing the magazine; the latter means being operable only when the slide transferring means is in its magazine position. The projector Figs. 2, 7 is adapted to receive magazines 60, the slide compartments of which are of different spacing length so that the rack 66 which indexes the magazine is shaped so as to engage either pinion 67 or 77 on a shaft 69. The slides are as described in Specification 864,302. The projector includes an elevator which lowers a slide in its holder into the magazine from the gate and lifts another one up to said gate. Brackets 85 on a lifting member 84 engage ears 56 of the slide holder 46 and by oscillating a lever, the slide holder is lifted up to the gate and down again being guided vertically by the backing plate 36 of the gate which engage shoes 88, 90 on the elevator. The slides can be withdrawn at the gate position by means of a device operated by levers 100, 110 in which an ear 118 on lever 110 engages an ear on the slide holder and lifts it up to a hole in the top of the projector. The elevator, shutter and cyclic magazine indexing mechanism are driven through a hand crank-shaft 120 which may be driven by a hand crank 122 or a motor. The shaft is connected via gears to a programming wheel 142, Fig. 11, secured to a shaft 140. The wheel 142 is attached indirectly to the elevator lever 96 and also operates a shutter 158 via a shutter bracket 156 pivoted at 160 so that no movement of the slides is projected. The hand crank-shaft is connected by a system of gears to the shaft 69 so that the slide magazine only moves when the elevator is fully down. The slide can be projected and indexed manually by pushing a knob on shaft 192, Fig. 11, towards the centre of the projector to disengage an automatic indexing clutch 180, and rotating said knob to move the magazine in either direction. In order to prevent the 'magazine from being indexed when the elevator is not fully down the knob on shaft 192 is interlocked with the hand crank 122. In the event of a slide getting jammed the indexing clutch 180 can be disengaged by means of a lever 200 which can move gear 172 to the right (Fig. 13) by means of an ear 214.
Patent GB-214293-A (GB)
Title: Improvements in and relating to the halogenation of hydrocarbons and their derivatives
IPC: C07C17/10
Filed: 1922-12-14
Abstract: Hydrocarbons and their derivatives are halogenated by heating with a metallic halide exhibiting a dissociation pressure of at least 0.01 atmospheres at temperatures in the neighbourhood of or below 500 DEG C.  An example is given of the chlorination of methane by passing it through a heated tube containing cupric chloride mounted on pumice; mixtures of carbon tetrachloride, chloroform, methylene dichloride and methyl chloride in varying proportions are obtained according to the temperature, pressure, and rate of flow.  The cuprous chloride is re-transformed into cupric chloride by treatment with chlorine or a mixture of hydrogen chloride and air or other oxygen-containing gas. To avoid the formation of phosgene, oxygen must be absent whether free or combined.  The use of antimony chloride as halogenating agent is disclaimed.
Patent GB-931895-A (GB)
Title: Means for pictorially displaying different strata of an object
IPC: G09B29/02
Filed: 1961-09-25
Abstract: 931,895. Diagrams; pictures; books. G. W. BELL. March 21, 1962 [Sept. 25, 1961], No. 34172/61. Classes 11, 16 and 146 (2). A display means, which is adapted to illustrate in a cumulative or subtractive manner different strata of an object, comprises a plurality of opaque cards, which are punched to form opaque frames 16 having integral therewith opaque display portions 17 carrying on their upper surfaces printed images of each stratum of the object, the views or the composite frame and display portions being in register so that a complete picture of the object may be built up by superimposing the cards on each other. In one embodiment the display portion may be attached to the frame by extending portions 18, 19 in Fig. 1, of the object displayed and in other positions by integral spokes 20 and punched portions 10 to 15 removed. In another embodiment (in Fig. 2, not shown) the frame and display portion may be interconnected by a transparent sheet 21 adhered to both of them and the spokes 20 locating the display portion with respect to the frame removed subsequently. A plurality of cards may be bound in a book form, in Fig. 3, the book comprising covers 22, 23, book spine 24 and a pair of resiliently displaceable mounting members 25 anchored to the covers at 26. In a further embodiment (in Fig. 4, not shown), the cards may be formed into a cruciform paginal unit. In still a further embodiment (not shown) the display means may comprise a plurality of individual cards for selective superimposition. The backs of the display portions may be printed with reverse views of the various strata.
Patent GB-1468696-A (GB)
Title: Comminution of nuclear fuel and/or breeder elements especially in recycling
IPC: G21C19/44
Filed: 1974-08-02
Abstract: 1468696 Comminuting apparatus KERNFORSCHUNGSANLAGE JULICH GmbH 2 Aug 1974 [5 Sept 1973] 34232/74 Heading B2A [Also in Division G6] In a process of comminuting a nuclear fuel and/or breeder element containing nuclear fuel and/or fertile material embedded in graphite, the comminution is performed by milling the element by holding it in engagement with at least one rotating milling cutter tool. In one embodiment of comminuting mill, shown in Figure 1, the fuel element 5 is fed to a pair of milling rolls 1, 2 through a tubular support 4, the end 6 of which facing the rolls 1, 2 is shaped such that a uniform distance is obtained between the support 4 and the surfaces of the rolls 1, 2. On two opposed sides of the support 4 there are arranged recesses 7, 8, 9, 10 through which feeding devices 11, 12, 13, 14 extend. These are rods which are in direct contact with the surface of the fuel element 5 and which are driven in rotation so as to assist in feeding the element 5 against the milling rolls. The milling rolls 1, 2 are driven by means (not shown) in the direction of the arrows 17, 18 so that their teeth engage the fuel elements 5 in a direction opposed to the direction of transport 19 of the fuel elements. The particles cut off by the milling rolls 1, 2 are collected in a container 20 from where they pass via outlet 21 either directly into a fluidised bed furnace or, if the milling operation is followed by pulverisation, into a pulveriser provided for this purpose. The milling rolls 1, 2 have cutting teeth 27 (Figure 3) arranged on their surface in the form of interrupted (helical threads having a trapezoidal cross-section. In a second embodiment (Figure 2, not shown), there are two pairs of opposed milling rolls arranged in series, each pair milling only part of the cross-section of the fuel element. The pairs of milling rolls are driven in opposite directions, the rotation of the first pair being such that their teeth where they engage the fuel element move with the direction of transport of the fuel element whereas the second pair of rolls rotates in the opposite sense.
Patent GB-920829-A (GB)
Title: Improvements in or relating to indicating instruments
Inventor: SPENCER DENNIS LINCOLN
Filed: 1960-10-06
Abstract: 920,829. Actuation of switches. S. SMITH & SONS (ENGLAND) Ltd. Sept. 8, 1961 [Oct. 6, 1960], No. 34296/60. Class 38 (5). [Also in Group XIX] An indicating instrument, particularly for indicating the quantity of liquid in a fuel tank has a main pointer 2 on a spindle 1, which may be driven by the capacitative fuel gauging apparatus of Specification 695,074, and an auxiliary setting pointer 7 mounted for independent rotation about spindle 1. A pair of pins 9, 10 are rotatable around spindle 1 with the pointers 7, 2 respectively, pin 9 being carried by a gear-wheel 8 secured to a sleeve 6 carrying pointer 7, and pin 10 being carried by an arm 11 on spindle 1. Two cams 14, 15 are independently mounted on the spindle 1 and are urged together angularly by a spring 16. The gear-wheel 8 also carries a pair of microswitches 17, 18 which are operable by the cams and are settable with pointer 7 relative to pointer 2 by a knob 22, the gear 8 being held against rotation after setting by friction in the manual drive arrangement. When the two pointers are aligned, the pins 9, 10 are also aligned and the cams are separated by the thickness of the pins, the cams then being arranged to be in a position such as to open both switches 17, 18.
Patent GB-1404184-A (GB)
Title: Ties
IPC: A41D25/06
Filed: 1972-07-21
Abstract: 1404184 Ties FU LERK-KAM 21 July 1972 34306/72 Heading A3V A tie is provided with two buttons 2 sewn on the rear face of the intended front of the tie, and a series of button holes 3 formed by stitching across a slit in the tail of the tie at button hole intervals, such that when knotted the buttons 2 can be inserted through the adjacent button holes 3 to anchor the tail of the tie. Additionally a button hole 3 on the tie can be fastened to a button on the shirt of a wearer, if desired.
Patent GB-655665-A (GB)
Title: Improvements in magnetic record transducing heads
IPC: G11B5/127
Filed: 1946-11-19
Abstract: 655,665. Magnetic recording and reproducing apparatus. BRUSH DEVELOPMENT CO. Nov. 19, 1946, No. 34316. Convention date, Dec. 14, 1945. [Class 40 (ii)] In a transducing head for recording, reproducing and erazing sound on a magnetic medium such as steel wire, the core elements and surrounding windings are clamped together in a single unit with thick curved guide-members clamped between a supporting structure consisting of plates of non-magnetic material. The core elements 51 are flat and made of magnetic sheet material somewhat thicker than the steel wire 31, and are shaped to have convex tips 54 at the part forming the non-magnetic gap 53 where contact with the wire 31 is made. The supporting structure consists of plates 71 of non-magnetic material between which the guide-members 72 are clamped, circular cavities 77 being provided to house the mounting blocks 57, 58 which support the core elements 51 and windings 55. The centre parts of the plates 71 have inwardly-facing bevelled surfaces which serve to form a central guide-channel 74 in the region of the pole-tips 54. The mounting block 57 may be made of conducting material such as a non-magnetic metal in order to dissipate heat from the windings 55 and to act as earth return connections. The block 58 may be provided with terminal stems 65 which make contact with metal tags on the windings 55. In another construction, described with reference to Figs. 19 to 21 (not shown), separate cavities are provided for transducer and erazing heads respectively, an additional central guide block for the wire being provided. Specifications 599,751 and 617,199 are referred to.
Patent GB-521806-A (GB)
Title: Improvements in or relating to glazing bars
IPC: E04D3/08
Filed: 1938-11-25
Abstract: 521,806. Glazing bars. WILLIAMS & WILLIAMS. Ltd., and WILLIAMS, J. Nov. 25, 1938, No. 34328. [Class 20 (iii)] In a glazing - bar having a web A with main abutments C projecting from its base and one or more auxiliary abutments A<SP>1</SP>, A<SP>2</SP> and A<SP>3</SP> near the upper end, interchangeable distance pieces F<SP>2</SP> and G<SP>2</SP> are provided which are adapted to engage both the main abutments and the base of the bar. These distance pieces may engage in a groove in the base of the bar. Sheets of glass D' and D are clamped between the main abutments or distance pieces and auxiliary abutments by spring members H. The use of distance pieces as described enables the sheets of glass attached to one bar to be overlapped to various extents as shown.
Patent GB-1317634-A (GB)
Title: Method of manufacturing magnetic heads
IPC: G11B5/235
Filed: 1970-07-15
Abstract: 1317634 Glass for joining to magnetic heads PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 15 July 1970 [18 July 1969] 34370/70 Heading ClM [Also in Division G5] A magnetic head gap consists of a glass layer of composition 60 PbO : 16 SiO 2  ; 14 B 2 O 3 : 10 ZnO weight per cent sandwiched between layers of a non-magnetizable metal, metal oxide, boride, nitride or ferrite, such as one or more oxides of Be, Mg, Al, Si, Ti, Zr, Sn or Ta, boron nitride, silicon nitride or Cr on the magnetic heads. The layers are RF sputtered on to sintered or single crystal ferrite polepieces subsequently bonded by the glass under heat (450-650‹ C.) and pressure (500-600 p.s.i.). The sandwiching layers prevent the glass from dissolving the ferrite.
Patent GB-1431590-A (GB)
Title: Recovery of copper
IPC: C22B15/00
Filed: 1973-07-19
Abstract: 1431590 Recovering copper E I DU PONT DE NEMOURS & CO 19 July 1973 [19 July 1972] 34475/73 Heading C1A [Also in Division C7] Cu is recovered from minerals (such as ores or concentrates) thereof containing also Fe and S. The process comprises leaching the mineral with an aqueous solution containing cupric chloride and additional chloride ion (e.g. provided by NH 4 Cl) to produce an aqueous solution containing cuprous chloride. The leaching is in a multistage operation, wherein a stoichiometric excess of mineral is used in an initial stage, a stoichiometric excess of leaching agent is used in a subsequent stage and the solution from the subsequent stage contacts mineral introduced in the initial stage.
Patent GB-1512238-A (GB)
Title: Controlling the supply of power to an electrical device
IPC: H05B37/02
Filed: 1975-08-19
Abstract: 1512238 Controlling theatre lighting R M GODDARD 19 Aug 1975 [19 Aug 1974] 34500/75 Heading H2H Apparatus for controlling the supply of power to a device 51 such as a dimmer in a theatre lighting system comprises potentiometers 29, 30 for setting values P x , P y , comparators 31, 33 for providing a first and a second series of pulses, the duty cycles of which are functions of P x , P y , potentiometers 35, 37 for multiplying the amplitudes of the pulses in the respective series, and diodes 43, 45 for combining the series of pulses to provide an output determined by the instantaneous amplitude of the largest amplitude pulse, the output being used to control the power supplied to the device. The apparatus is used as a cross fader in theatre theatre lighting to enable a smooth fading of the lighting from one scene to the next and the dimmer 51 may be a conventional thyristor dimmer. A generator 21 supplies a D.C. reference level on line 23 and a high frequency sawtooth voltage on a line 25 so that the comparators 31, 33 provide series of pulses, the duty cycles of which are proportional to the settings of the potentiometers 29, 30. The potentiometers 35, 37 are pre-set so that the amplitudes of the pulses are proportional to values C 1x , C 1y  and the diodes 43, 45 provide an output pulse signal at 47 equal to the highest instantaneous pulse amplitude. In order to smoothly fade out one scene and fade in the next, the value P x  is progressively reduced by adjusting the potentiometer 29 and the value P y  is progressively increased by adjusting the potentiometer 30.
Patent GB-605485-A (GB)
Title: Improvements in or relating to range finders
IPC: G01C3/12
Filed: 1945-12-20
Abstract: 605,485. Range-finders. KODAK, Ltd. Dec. 20, 1945, No. 34564. Convention date, Jan. 19, 1943. [Class 97 (i)] A range-finder having an optical system forming images in a comparison plane or planes by light received from two spaced view points has a fiducial mark and coincidence line as adjustment coincidant elements, an image of the mark being formed adjacent the line by part or the whole of the optical system and the line being movable to effect coincidence thereof with the mark image when the range is indicated by a scale and index one of which is connected to the coincidence line. The invention may be applied to coincidence or stereoscopic finders. Fig. 1 shows a coincidence finder comprising entrance windows 11, objections 12 and a central combining prism system 13, 14, 15 and right-angled prisms 16, 17 having a portion 19 of the interface reflecting and a portion 18 transmitting to permit juxtaposed images from each window to be viewed by eye 22. The reflecting surface has a fiducial mark 20 an image of which is projected via prism 14, lens 12 and prism 11 to a prism 26 cemented thereto whence it passes to a similar prism 27 and thence via lens 12, prism 13 and auxiliary prism 28 to form an image 201 adjacent a spiral coincidence line 32 on a rotatable disc 30. The finder images are adjusted to coincidence by light deviator 40 and after rotating the disc 30 until fiducial mark and line coincide the range may be read on a scale 35 or transmitted to a director of anti-aircraft fire. Alternatively both mark and line may be formed on the disc 30 and may be slightly converging straight lines, the disc then being moved linearly to effect coincidence. When applied to a stereoscopic under the spiral and mark image are observed by a second observer and a mark indicating the correctness of the halving adjustment may also be projected as described in Specification 605,483. Specifications 605,481, 605,482, 605,484 and 605,486 also are referred to.
Patent GB-393951-A (GB)
Title: Improvements in or relating to the rupturing of arcs in fusible arc-rupturing devices employed in conjunction with electric switches
IPC: H01H9/10
Filed: 1931-12-14
Abstract: 393,951. Fusible cut-outs. ELLIS, G. B., 70, Chancery Lane, London.-(Metropolitan Device Corporation ; 1250, Atlantic Avenue, Brooklyn, New York, U.S.A.) Dec. 14, 1931, No. 34631. [Class 38 (i).] In an arrangement for breaking an electric circuit, and more particularly a H.T. circuit, by inserting fuses of diminishing capacity therein after the switch or circuit breaker contacts have separated, fuses of the type shown in the Figure are employed. The fuse wire 32 which is formed of silver or solder and a " blowing-point " 33 passes through insulating blocks 31 loosely fitting within a tube 30. On rupture of the fuse at the point 33 the gas pressure generated between the blocks 31 forces them rapidly apart so that a large break between the separated ends of the fuse is immediately established and the setting up of arcing between these ends is prevented. If desired, this action may be improved by placing a little guncotton in the space between the blocks 31.
Patent GB-996483-A (GB)
Title: Oxymethylene polymers
IPC: C08G2/00
Filed: 1961-09-27
Abstract: An oxymethylene polymer having polymer chains containing from one to twenty-five per cent oxyalkylene units having more than one carbon atom at least 80% of these oxyalkylene units being present in segments of from 1 to 3 units and the polymer chains having terminal hydroxyl groups is reacted with an acylating agent.  The polymers may be made by the copolymerization of trioxane with ethylene oxide, dioxolane, 1,3,5-trioxepane, 1-3-dioxane, trimethylene oxide, pentamethylene oxide, 1,2-propylene oxide, 1,2-butylene oxide, neopentyl formal, pentaerythritol diformal, paraldehyde, tetrahydrofurane and butadiene monoxide. Specified acylating agents are acetic anhydrides -preferred: the anhydrides of other aliphatic acids, of cycloaliphatic acids, of aromatic acids and of heterocyclic acid while mixed anhydrines may be used. Acid halides, e.g. benzoyl chloride, may also be used.  The usual esterification catalysts may be present.  Specification 903,668 is referred to.
Patent GB-1511253-A (GB)
Title: Cooling of a hot body of low thermal conductivity
IPC: F01C3/06
Filed: 1974-08-06
Abstract: 1511253 Rotary positive-displacement fluidmachines NOEL PENNY TURBINES Ltd 28 July 1975 [6 Aug 1974] 34693/74 Heading F1F To cool the piston 2 of an I.C. engine a liquid such as oil, flows into and out of a chamber 10 by way of a hollow plug 8 and passages 9and/or 9' in the plug and/or the piston, the plug being made of a material e.g. copper or aluminium, having a greater thermal conductivity than that of the material e.g. nodular cast-iron, of which the piston is made. The cross-sectional area of each of the passages 9, 9' is such that the flow of the liquid therein is turbulent.
Patent GB-1113950-A (GB)
Title: Herbicidal compositions
IPC: C07D251/52
Filed: 1965-08-13
Abstract: A herbicidal composition comprises N - isopropyl - a  - chloroacetanilide and one or more compounds selected from 2,4-bis-(methoxypropylamino)-6-methylthio-S-triazine, 2,4-bis-(isopropylamino) - 6 - methylmercapto-S-triazine.  The composition may be in the form of dusts, pulverulent solids, granules, wettable powders or emulsifiable concentrates.  Anionic cationic and non-ionic emulsifiers are specified.
Patent GB-826620-A (GB)
Title: Aryl magnesium chloride complexes
IPC: C07F3/02
Filed: 1956-11-14
Abstract: The invention of the parent Specification is modified in that (a) the aryl group may be substituted by a larger group of substituents as detailed below, (b) the compound Q is defined as a substituted or unsubstituted cyclic ether containing no substituent reactive under the conditions for the preparation of the complex, having 5 or 6 atoms in the ring, of which one atom only is oxygen, the other ring atoms being carbon except that a substituted nitrogen atom may replace a carbon atom in the 4-position when the ring has 6 atoms, the ring containing not more than one double bond and at least one carbon adjacent the oxygen being free from any substituents and (c) the complexes may be of formula R(MgCl.nQ)z as well as RMgClnQ (R being a substituted or unsubstituted aryl group).  The aryl group may be substituted by fluorine, vinylic and allylic radicals, cycloaliphatic radicals, allylicoxy radicals, organosilyl radicals (e.g. triarylsilyl radicals), organostannyl radicals (e.g. trialkyl-stannyl radicals), organomercapto radicals (e.g. alkyl thio radicals), organosulphuryl radicals (e.g. aryl sulphuryl radicals), diorganoamino radicals (e.g. dialkylamino radicals), diorganoboryl radicals (e.g. diarylboryl), diorganophosphinyl radicals (e.g. dialkylphosphinyl), diorganoarsenyl radicals (e.g. diarylarsenyl) and diorganostibyl radicals (e.g. dialkyl stibyl).  The cyclic ethers include tetrahydrofuran, tetrahydropyran, dihydropyran, 2 - methyl - tetrahydrofuran, 2 - ethoxy - tetrahydrofuran, tetrahydrofurfuryl ethyl ether and N-methyl morpholine.  The compounds described in the parent Specification are disclaimed.ALSO:The invention comprises organosilyl substituted aryl magnesium chloride complexes of formula R(MgCl.nQ)x where R is an organosilyl substituted aryl radical containing no group reactive under the conditions for the formation of the complex, n is an indeterminate number of the order of 1 to 3, x is 1 or 2 and Q is a substituted or unsubstituted cyclic ether containing no substituent which is reactive under the conditions for the preparation of the complex, having 5 or 6 atoms in the ring of which one atom only is oxygen, the other ring atoms being carbon except that a substituted nitrogen atom may replace a carbon atom in the 4-position when the ring has 6 atoms, the ring containing not more than one double bond and at least one carbon adjacent the oxygen being free of any substituents.  Specified cyclic ethers include tetrahydrofuran, tetrahydropyran, dihydropyran, 2 - methyl - tetrahydrofuran, 2 - ethoxy - tetrahydrofuran, tetrahydrofurfuryl ethyl ether and N-methyl morpholine.  Example 24 describes the preparation of p-(trimethylsilyl)-phenyl magnesium chloride/tetrahydrofuran complex.
Patent GB-314358-A (GB)
Title: Improvements in or relating to the manufacture of artificial resins
IPC: C08G12/04
Filed: 1927-12-23
Abstract: 314,358. British Cyanides Co., Ltd., and Rossiter, E. C. Dec. 23, 1927. Samples furnished. Adhesives.-A resin solution useful as an adhesive is prepared by mixing aqueous solutions of a urea-thiourera formaldehyde resin and a dicyandiamide-formaldehyde resin, treating the mixture with formic acid, and incompletely - evaporating.