baber/WOPTO huggingface dataset:
Patent GB-1404470-A (GB)
Title: Photographic materials containing a resorcinol
IPC: G03C1/35
Filed: 1972-09-14
Abstract: 1404470 Photographic material containing a resorcinol EASTMAN KODAK CO 14 Sept 1972 [16 Sept 1971] 42717/72 Heading G2C A photographic material comprises a support bearing at least one layer containing a non- diffusible resorcinol which combines with an oxidized silver halide developing agent to form a non-diffusible substantially colourless product. The resorcinol may have the formula: where R is a group containing at least 8 C selected from alkyl, substituted alkyl, alkoxy, substituted alkoxy, alkylcarbamyl, alkylcarbonamido, arylcarbonamido and aralkylcarbonamido. The material may contain at least one layer comprising a photographic silver halide emulsion. The material may contain at least one colour coupler, in which case it may form part of a photographic diffusion transfer assemblage also comprising a dye imagereceiving layer, a reservoir containing an alkaline processing composition, and an aromatic primary amino silver halide colour developing agent. The resorcinol may be present in any layer of the photographic material including the imagereceiving sheet.
Patent GB-1326084-A (GB)
Title: Gaseous discharge device
IPC: G09F9/313
Filed: 1970-09-08
Abstract: 1326084 Gas discharge display panels OWENS-ILLINOIS Inc 8 Sept 1970 [9 Sept 1969] 42844/70 Heading H1D A gas discharge device 10 comprises two spaced flat rectangular gear plates 11 and 12 sealed together to form a gas-filled chamber, the ends of one plate extending beyond the side edges of the other plate, and each plate bearing an array of conductors 13, 14 alternate ones of which extend towards opposite ends of the plate, one of said plates carrying a gas filling tubulation 40 extending perpendicular to the plate. The conductors 13 and 14 may be of gold and may be in the form of wires or printed circuits. The conductor arrays are covered by dielectric films or coatings 15 and 16 of solder glass material which is screened on to the plates in the form of a glass frit and cured in place. The plates 11 and 12 are spaced by rods 19, 20 and 21 or by beads and are sealed by a ceramic sealant 17 applied after curing the coatings 15 and 16. The portions of the conductors 13 and 14 outside the chamber are bent as shown to form groups 13R-G1, 13R-G2 &c which may be contacted by the type of edge connector used with printed circuit boards. The plates 11 and 12 may cross at other than a right-angle to provide a diamond-shaped display area. One plate may be considerably lengthened and crossed by a plurality of other plates to form a plurality of gas chambers. The ends 11L and 11R of plate 11 may be extended to allow room for the conductors 13 to be bent through a rightangle for contact by an edge connector at edge 11B. The gas filling may be a mixture of neon and argon or nitrogen.
Patent GB-1013691-A (GB)
Title: Self-closing cover plate for air shafts or emergency exits of shelters particularly underground shelters
IPC: E05F15/56
Filed: 1961-11-30
Abstract: 1,013,691. Door operating appliances; fortifications; remotely operated fastenings. M. VON LINSINGEN [trading as BOCHUMER EISENHUTTE HEINTZMANN & CO.] Nov. 30, 1961 [Dec. 7, 1960], No. 42912/61. Headings E1A, E2A, E2B and E2M. [Also in Divisions F2 and G3] A self closing cover plate 2 for an air shaft or emergency exit of an underground shelter is lockable in one or more open positions by locking means 6 which are automatically released in an emergency by a control member (not shown) responsive to abrupt changes in the atmosphere, the cover plate then descending under gravity under the control of damping means which decelerate it in a pre-sealing zone before it has reached its final closing position The control member may comprise a pressure meter, thermal fuse, Geiger counter or the like. The cover plate is guided by a piston-like guide rod 3 accommodated in a damping cylinder 5 on the top of which is located the locking means 6. The locking means comprises a plurality of balls 8 held in engagement with one of a numb of annular grooves 3a in the guide rod 3 by an axially displaceable V-ring 9 constituting an annular piston in the casing 6a. The ring 9 is normally held in the locking position by springs 10 and its two sides are hydraulically connected by a conduit 14 which joins the pressure conduit 11 to the return conduit 12 and is arranged to be opened, when the pressure conduit is closed, by a distributing slide valve 13a. In response to an emergency the control member actuates an electromagnetic switch which moves the slide valve 13a thereby raising the ring 9 and releasing the cover plate which begins to fall. During the descent of the plate the air in the cylinder 5 is compressed so that the motion of the plate is rapidly decelerated as the edge of the plate comes into correspondence with the portion 7d of its seating to effect the pre-sealing. At the same time a roller lever 3e is turned by a fixed inclined guide 3f to gradually open a pressure relief valve (not shown) which allows the compressed air to escape from the cylinder through an axial bore 3c in the guide rod 3 so that the cover plate is gently lowered into its fully closed position. Means may be provided whereby the slide valve 13a is actuated when the plate is fully closed to lock the plate in this position. A free piston 16 driven by hydraulic fluid supplied through a conduit 17 may be provided to raise the cover plate, compressed air being supplied if required through a conduit 18 to return the piston to the bottom of the cylinder 5 after the cover plate has been locked in its open position. Alternatively, a separate lifting cylinder of smaller diameter than the cylinder 5 may be located beneath that cylinder with its piston rod projecting through a bore in the cylinder to engage the guide rod 3.
Patent GB-1425352-A (GB)
Title: Aminoplast mouding compositions
IPC: C08L33/20
Filed: 1973-09-13
Abstract: 1425352 Rubber-modified aminoplast moulding compositions BRITISH INDUSTRIAL PLASTICS Ltd 13 Sept 1973 [29 Sept 1972 (2)] 43012/73 Headings C3R and C3P An aminoplast moulding composition comprises (a) an aminoplast resin, (b) a liquid rubber which is (i) a carboxy- or mercaptan-terminated acrylonitrile butadiene rubber or (ii) a carboxyterminated acrylonitrile butadiene rubber mixed with, and curable by, an epoxy resin, and (c) a filler. Preferably there are 0À1-8 p.b.w. of (b)(i) or 0À5-20 p.b.w. of (b)(ii) per hundred of (a). The epoxy resin is preferably added to the AB rubber in the presence of the aminoplast, in amount 5-100 p.b.w. per 100 of rubber, and a cross-linking agent, e.g. an amine, may also be present. In Examples 1-3 305 p.b.w. of a urea-formaldehyde resin syrup (U : F, 1 : 1À5) or melamine-formaldehyde resin syrup (M : F, 1 : 2) is mixed with 60 p.b.w. of paper pulp, ipo NH 4 Cl (optional), ZnO and Zn stearate, then with 1À6-1À6 p.b.w. of a mercaptan- or carboxy-terminated acrylonitrile butadiene rubber of M.W. 1800-4300 ; then with more Zn stearate and 8-20 p.b.w. of glass fibres, asbestos fibres or basic aluminium carbonate, and the dried mixture is granulated. In Examples 4-6 similar UF resin/paper mixtures are mixed with 11-23 p.b.w. of carboxyterminated AB rubbers and 5-15 p.b.w. of epoxy resins of M.W. 320-470 from ethylene glycol or bisphenol A and epichlorhydrin, optionally ipo ethylene diamine or diethylene triamine, and the mixture is dried, mixed with more Zn stearate and crushed.
Patent GB-1013796-A (GB)
Title: Improvements relating to electric limit switches
IPC: H01H21/28
Filed: 1962-11-14
Abstract: 1,013,796. Snap-action switches. R. B. DENISON. Nov. 14, 1962 [Nov. 14, 1961], No. 43129/62. Heading H2B. A limit switch, comprising an operating lever B, snap-action mechanism E, a movable contact carrier D and fixed contacts C, has resilient arms 60, 62 protruding from the carrier D which engage shoulders 64, 66 on the switch housing A to decrease the wear of the surfaces 60A, 64A, as the carrier pivots. When the operating lever B is actuated, a spring leg 18<SP>11</SP> exerts a force on a boss 50, a leg 34 of a latching dog 30 engages a shoulder 47 of the carrier to prevent the carrier from moving and energy is stored in a torsion spring 18 until a cam 14 pivots sufficiently to engage an arm 36 and release the dog 30 so that the carrier D rotates and snaps contacts 42 into engagement with fixed contacts C<SP>1</SP>, C<SP>3</SP>. The carrier D is constructed of resilient plastics material. In another embodiment, Fig. 3 (not shown), the carrier D<SP>1</SP> comprises an upper portion 110 of resilient plastics material and an operating stem 120 of metal.
Patent GB-1112181-A (GB)
Title: Improvements in or relating to impulse-forming and like machines
Inventor: BAKHTAR FARHANG
IPC: B21J7/26
Filed: 1963-11-05
Abstract: 1,112,181. Power hammers. NATIONAL RESEARCH DEVELOPMENT CORPORATION. 4 Nov., 1964 [5 Nov., 1963], No. 43727/63. Heading B3H. An impact forming machine has two opposed platens 12, 13 interconnected for synchronous operation. The platens carry dies 23 and are actuated by pistons 18 in cylinders 21 to which pressure air is admitted. Piston heads 19 seal against rings 22 in the cylinder heads whereby the pistons are retained in their outer positions. To effect the forming stroke, compressed air is admitted through duets 29 to break the seals whereby the pressure in cylinders 21 acting differentially on the pistons, causes rapid inward movement thereof. To ensure synchronous operation, the two platens carry auxiliary pistons (31), (38), Fig. 5 (not shown), interconnected by hydraulic links. A valve (9), Fig. 3 (not shown), in the links may be used to lock the platens and other valves (10), (11) are used to effect inching movement thereof. Alternatively the platens may be interconnected by mechanical linkage and the pistons may be operated by an explosive mixture as described in Specification 1,112,182.
Patent GB-976700-A (GB)
Title: Improvements in the supply of combustible gas from a gas network
IPC: B01F23/10
Filed: 1963-11-06
Abstract: In a gas supply system (see Division F4) which normally supplies consumers with coke oven, natural or other combustible gas from a supply network, the supply gas is supplemented during periods of peak demand by feeding into the network a gas mixture having a heat of combustion, density ratio, and "Wobbe" number substantially the same as that of the supply gas and comprising: (a) propane, butane or a mixture thereo and (b) a mixture of hydrogen and nitrogen in the proportions in which these gases are used for the synthesis of ammonia.  In examples given, supplementary gas mixtures which are interchangeable with the supply gas may comprise the following proportions: .Component a.Component b .91.9% Hydrogen/Nitrogen mixture;.8.1% Butane .89.0% Hydrogen/Nitrogen mixture;.11% Propane .78.8% Hydrogen/Nitrogen mixture;.21.1% Butane .71.4% Hydrogen/Nitrogen mixture;.28.6% Propane
Patent GB-1120801-A (GB)
Title: Carburettor
IPC: F02M9/08
Filed: 1963-11-06
Abstract: 1,120,801. Spray carburetters. F. KNAPPETT. Feb.4, 1965 [Nov. 6, 1963], No.43878/63. Heading F1B. Fuel is sprayed from a passage 26 in a stationary stem 17 into a mixing chamber 11 formed inside sleeves 16, 12, the sleeve 12 being rotatable to control air inlets 21 and being integral with a sleeve 13 controlling the fuel flow. Fuel is supplied to passage 18 by gravity or pump and is controlled by corresponding openings 19 in the stem 17 and sleeve 13. A spring-loaded disc 25 is lifted away from stem 17 by suction to open the fuel passage 26. A pilot passage 23 supplying fuel for idling closes as valve 19 opens and leakage therefrom when the engine is stopped is prevented by a ball valve 24.
Patent GB-925800-A (GB)
Title: Improvements in or relating to apparatus and methods for exploring the topography of he sea bed
IPC: H02G1/10
Filed: 1960-12-21
Abstract: 925,800. Measuring electrically. ELECTRICITE DE FRANCE-SERVICE NATIONAL. Dec. 21, 1960 [Dec. 22, 1959; Dec. 9, 1960], No. 43939/60. Class 40 (1). [Also in Group XIX] Apparatus for exploring the topography of the sea bed comprises a pipelike test element dragged along the seabed and distorting in accordance with irregularities in the surface covered, the distortions being measured by internal, recording extensometers. The test element is similar in rigidity and weight to a submarine cable to be laid on the sea bed. As shown (Fig. 1), a vessel 2 carries the test element 3 along the sea bed over the proposed route for the cable. One section of the member 3 contains two mechanical extensometers, each comprising two circular plates 21, 22 (Fig. 3), each held inside the cable by three points 24 spaced 120 degrees apart (Fig. 4). A central shaft 42 between a pair of plates 21, 22, carries a recording drum 43. Three pairs of arms 51, 52 are hinged to the plates at 53, 54 and guided in supports 57, 58, each arm carrying a recording pen 45, 46. As the test element 3 is dragged along, the distortions due to the irregularities in the sealed produce movement of the styli 45, 46 which are recorded on the drum 43. A further section of the test element 3 carries electrical extensometers comprising a magnetic wire 66 (Fig. 7) stretched between plates 67, 68 and forming part of the magnetic circuit of a coil 69. The natural frequency of vibration of each of these units, indicative of the stress and distortion between plates 67, 68, is transmitted electrically via an amplifier to a recording tape together with a signal representing time.
Patent GB-1282099-A (GB)
Title: Improvements relating to self-cleaning electric ovens
Inventor: BRANDON GEOFFREY EDWARD
IPC: F24C14/02
Filed: 1968-09-17
Abstract: 1282099 Heat cleaning ovens CREDA ELECTRIC Ltd 10 Sept 1969 [17 Sept 1968] 44037/68 Heading F4W A self-cleaning oven has one or more electric elements arranged adjacent the inner surface of one or more walls, and one or more external elements adjacent the outer surface of the walls without internal elements, all the elements being energized for both cleaning and cooking, the relative heat dissipation of the internal and external elements being such that uniform walltemperatures are attained in the selfcleaning heat range, and convective circulation within the oven is attained in the normal cooking temperature range. Internal elements 16 adjacent the back wall of an oven are covered by a plate 17, and external elements 19 cover parts of the top, bottom and sides of the oven. The external heating elements are of a lower heat dissipation rating than the internal elements, and the temperature in the oven is controlled by switching the elements in and off together.
Patent GB-1058234-A (GB)
Title: Improvements in or relating to radio direction finders
IPC: G01S1/02
Filed: 1963-11-08
Abstract: 1,058,234. Radio direction finders. TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. Nov. 8, 1963 [Nov. 10, 1962], No. 44086/63. Heading H4D. A wide frequency range radio direction finder comprises a pair of spaced directional logarithmic periodic antenna arrays 11 and 12, Fig. 3 (not shown) and Fig. 4, at a predetermined angle # to one another, having overlapping radiation patterns, and formed of a plurality of centre fed antenna elements so logarithmically dimensioned and spaced that their extended envelopes (17a) and (18a) converge on a common infinite frequency point 19, means (4) and (5), Fig. 1 (not shown), for respectively producing the vector sum and differences (U 3 ) and (U 4 ), Fig. 2 (not shown), of the amplitude equalized output signals of the atennµ (U 1 ) and (U 2 ), 90 degrees phase shifting means (6), causing the sum and difference signals to be in phase or antiphase, and indicator means, for example CR.T (9), for using the adjusted sum and difference signals to produce an indication (10) of the direction of the incoming signal. It is stated that the bearings indication (10) is largely independent of frequency. A signal 20 of wavelength # 1  will be received by tuned antennµ 11a and 12a with a time difference t 1 , and a signal of wavelength # 2  will be received by tuned antennµ 11b and 12b with a time difference t 2 . The phase differences corresponding to these two time differences are   proportional to t1/# 1  and ,t2/#, and are thus equal due to the arrangement of the two arrays.
Patent GB-968531-A (GB)
Title: Arrangement for controlling the brightness of direct current operated illuminating or signalling lamps for example in aircraft
Inventor: TIMM HEINZ
IPC: H05B39/08
Filed: 1962-11-22
Abstract: 968,531. Supply circuits for incandescent lamps. K. DIEHL. Nov. 22, 1962, No. 44112/62. Heading H2H. [Also in Division H3] A system enabling the brightness of a plurality of lamps to be controlled comprises switching means the ratio of the ON to OFF times of which can be varied so that the average current through the lamps can be controlled according to the degree of brightness required. A potentiometer P and switches S 4 , S 5  are operated by a single control knob, the initial movement of which closes switch 5 and places the slider of potentiometer P at the left-hand end so placing all the potentiometer resistance in series with resistor R 3  and transistor T 2 . Transister T 2  thus remains non-conductive for a period considerably longer than transistor T 1  and hence the conductive periods of amplifying transistor T 3  and power transistor T 4  is short compared to the non-conductive periods thereof. With switches S 1 -S 3  closed, the average current supplied to lamps L 1 -L 3  over transistor T 4  will thus be small and the lamps will thus burn with minimum brilliancy. Further rotation of the control knob will move the slider of the potentiometer P to the right, thus altering the portions of its resistance which are in series with transistors T 1 , T 2  to alter their relative conducting periods so that the conductive period of the transistor T 4  becomes increasingly longer relatively to the non-conducting period and thus the brilliancy of the lamps L 1 -L 3  increases. When the slider of the potentiometer P reaches the right hand end of the potentiometer resistance the switch S 4  is simultaneously closed thereby connecting the lamps directly to the supply U B , the lamps then burning at full brilliancy. A relay circuit (see Fig. 7) is provided to give an indication of failure of the system or of the supply. The relay circuit is connected across the emitter-collector path of transistor T 4  such that as transistor T 4  becomes operative a transistor T 5  becomes intermittently conductive to charge a condenser C 3 . When sufficient charge exists on this condenser a transistor T 6  becomes conductive and remains conductive to energize the relay coil R. Failure of either the system or the supply will cause the transistor T 6 , after condenser C 3  has discharged, to assume its non-conductive state to deenergize the relay coil R to provide an indication of failure.
Patent GB-1350619-A (GB)
Title: Silver halide photographic emulsions
IPC: G03C1/015
Filed: 1971-09-22
Abstract: 1350619 Silver halide emulsions FUJI PHOTO FILM CO Ltd 22 Sept 1971 [24 Sept 1970] 44280/71 Heading G2C An emulsion of gelatin and a mixed halide of silver is prepared by the addition of aqueous silver nitrate solution to an aqueous solution containing gelatin, potassium halide (e.g. bromide), and a previously prepared emulsion of gelatin and a mixed halide (e.g. iodobromide or chlorobromide) of silver. The proportion of iodide ion to iodide and bromide ions in the final emulsion may be 1-10 mol %.
Patent GB-1187657-A (GB)
Title: Railway Vehicle Retarder
IPC: B61K7/08
Filed: 1967-06-13
Abstract: 1,187,657. Railway track brakes. WESTINGHOUSE AIR BRAKE CO. 13 June, 1967 [24 June, 1966], No. 44635/69. Headings F2E and F2F. A railway vehicle retarder includes a pair of linked levers 2A, 2B mounted on respective pivots, i.e. the fixed mount 7 and the piston 10 of an hydraulic cylinder, each lever having an arm coupled to an upwardly and downwardly movable running rail 1, which rail is positioned between another arm-which carries a braking surface 6-of each lever; such that the other arms, in a first position of one of the pivots are movable to engage a wheel flexing the pair of levers by the application of a load to the rail, the force of the engagement being dependent upon the load. In a second position of the said pivot no such flexing can occur. In the embodiment the movable pivot is operated by hydraulic means responsive via a transducer to pneumatic control means, as described in Specification 1,187,656.
Patent GB-1529324-A (GB)
Title: Method and apparatus for winding a thread on a bobbin at a high winding speed
IPC: B65H54/52
Filed: 1975-10-29
Abstract: 1529324 Preventing ribbon winding TEIJlN Ltd 29 Oct 1975 [6 Nov 1974] 44645/75 Heading D1J In a winding operation with a take up of more than 2500 m/min the tightness of winding thread on previously formed layers is increased stepwise at least once at a time lying in the period 1.20 x 10<SP>-6</SP> # dw/dt/D # 3.0 x 10<SP>-6</SP> where w is the number of bobbin rotations per one reciprocal traverse and D is the denier of the thread. This prevents the onset of ribboning and hence defective winding which occurs as shown in Fig. 2 for various package widths l. The increased winding tightness is achieved by increased tension, i.e. slightly increased winding speed or reduced feed speed; or by increased load on a winding pressure roller. The point in the specified period can be determined by a timer or by sensing the package size with a sensor 15, Fig. 3, which alters a reference voltage supply from 11 to 12 against which a tachometer 10 voltage is monitored to control the speed of the winding motor 7. In an alternative embodiment, Fig. 4 (not shown) the supply to a motor driving a friction winding roller can be altered. In Fig. 6 the position where the thread runs over a tapered godet 2a is varied to reduce the feed rate and hence increase tension. In this embodiment a vertically sliding block 25 carries the traverse 3 and a split drum 23 and a pressure roller 18, the position of the block 25 operating sensor 15 to indicate package size. As shown in Fig. 10 the tightness of the winding is controlled by the pressure roller 18 loaded by the weight of block 25, this being partly counterbalanced by weights 41, 42. one of which comes to rest on a shelf 43 when the tightness is to be increased. Alternatively in the embodiment of Fig. 11 (not shown) the weight of the block 25 is supplemented by a weight which it encounters in the course of rising with increased package size. The thread tension can be increased by a thread deflector brake, Fig. 7 (not shown) or by changing the position of a filament collecting guide disposed below a spinnerette, Fig. 8, (not shown), which allows more complete cooling of the filaments before collection and hence increases the tension. Also a pressure roller can be mounted on an arm and loaded into contact with the package by a pneumatic cylinder whose supply is changed to increase the pressure, Fig. 12, (not shown). The winding tension may be increased by reducing the speed of a slit drum over which the thread passes as it approaches the package Fig. 5 (not shown).