baber/WOPTO huggingface dataset:
Patent GB-551614-A (GB)
Title: Improvements in and relating to colour photography
IPC: G03C7/18
Filed: 1941-05-26
Abstract: 551,614. Colour photography. KODAK, Ltd. (Eastman Kodak Co.). May 26, 1941, No. 6692. [A Specification was laid open to inspection under Sect. 91 of the Acts, Nov. 26, 1941.] [Class 98 (ii)] A mask for introducing co!our correction in reproducing a coloured original made up of three superimposed subtractively-coloured component images is made in a light-sensitive layer by exposing said layer through the original to a printing light composed of wave-lengths in a wave-band not more than 50 m Á wide so selected from a consideration of the spectral transmission curves of the dyes used that it is substantially unabsorbed by the yellow image, but is absorbed by the magenta and blue-green images in relative amounts which are proportional to the relative amounts of correction required for the undesired light absorptions of the magenta and blue-green colouring matters used in the original or in the copy, or in both. Fig. 4 shows in superimposition the spectral transmission curves of typical dyes, the blue-green being shown chain-dotted, the magenta in full-line, and the yellow dotted. Because its transmission for blue-green and magenta is high, the yellow does not usually need correction, but correction is necessary for the blue-green and magenta. If equal amounts of correction for these are required, a printing light is chosen having a narrow wave-band in the region of 560 m where the blue-green and magenta curves cross. Five times as much correction for the blue-green as for magenta would be obtained by printing with light of about 600 mÁ; and three times as much by using the lines of the sodium spectrum at 589 and 589.6 mÁ The band used may extend from 550 to 570 m or from 570 to 620 mÁ. An example is described in which a panchromatic emulsion coated on a separate support, and sensitized as with 3:3<SP>1</SP>-diethylthiacarbocyanine iodide so as to have no appreciable sensitivity above 640 mÁ, is exposed through the coloured original to printing light from a tungsten filament lamp (2700-3000‹ K) with a combination of filters Nos. 23 and 56 known under the Registered Trade Mark " Wratten," and after being developed to a black and white image, is placed in register with the original for duplicating or making colour separation negatives therefrom. In another example, an emulsion sensitized only to the region 570 to 620 mÁ as with 1:11-diethyl- 5:6-benz-2:21-cyanine iodide is used, with a tungsten filament lamp and " Wratten " filter No. 22. Specifications 512,608, 517,416, 537,864 and 547,519 are referred to.
Patent GB-547964-A (GB)
Title: Improvements in centrifugal switches
IPC: H01H35/10
Filed: 1941-05-27
Abstract: 547,964. Centrifugal switches. HEENAN & FROUDE, Ltd., and WALKER, G. H. May 27, 1941, No. 6759. Addition to 544,235. [Class 38 (v)] In a modification of the parent Specification, a universal joint interposed between the weighted lever 41 and the adjusting device comprises a connecting rod 60 with spherical ends bearing in cups 62, 63 secured, respectively, to the lever 41 and a member 64 which is moved longitudinally by rotation of the screw 65. The lever 41 is fixed to a spring 69 secured to the contact carrier 31, and an additional biasing spring 72 acts upon the lever 41 at high speeds.
Patent GB-881904-A (GB)
Title: Improvements in or relating to hydraulic garage-jacks
IPC: B66F5/04
Filed: 1958-03-03
Abstract: 881,904. Hydraulic jacks. LANDIN, L. H. March 3, 1958 [Nov. 15, 1957], No. 6776/58. Class 78 (3). An hydraulic jack assembly, comprising a pump housing 2 connected to a jack 1 by a rigid pipe structure 3 serving as a chassis for the jack assembly and forming an oil communication between the jack and the pump housing, is provided with transport wheels 18, 19 mounted on arms 22 which are pivotally mounted on a shaft 23 and which are lowered and elevated through a link mechanism 26, 28 provided with an operating lever 29, this lever being provided with a friction brake to retain the wheels in their lowered position. The brake comprises a spring-pressed washer on the pivot 30 of the lever 29 and the co-operating surfaces of the lever and the washer may be corrugated. The pump housing is provided with low and high-pressure pumps 6, 7 actuated by levers 8, 9 and the pipe structure comprises pressure and suction pipes 10, 11 and supporting pipes 13, 14, the pipes 13, 14 being provided with extensions 15, 16 forming a handle 17. The jack is lowered by actuating a release valve by means of a hand wheel 34. In a modification, the pipes 13, 14 are employed as suction pipes in place of the pipe 11.
Patent GB-1015805-A (GB)
Title: A process for the preparation of a catalyst for asymmetric hydrogenation
IPC: C07C51/487
Filed: 1963-02-20
Abstract: A carbonyl compound which on hydrogenation yields two optically active isomers is hydrogenated in the presence of a Raney nickel catalyst which has been treated with an aqueous solution of an optically active substance at a pH near its neutral point.  The optically active substances mentioned are amino or hydroxy acids or esters and examples describe the hydrogenation of methyl aceto-acetate to 2-hydroxymethyl butyrate.ALSO:A Raney-nickel catalyst is treated with an aqueous solution of an optically active substance at a pH near the neutral point of that substance.  The optically active substance may be an amino or hydroxy acid e.g. D- or L-glutamic acid, alanine, serine, threonine, proline, cysteine, tryptophan, phenylalanine, aspartic acid, valine, isoleucine, leucine, methionine, arginine, tyrosine, tartaric acid or malic acid. Esters may also be used but the N-substituted amino acids and acyl, dimethyl and ethyl derivatives have much less asymmetric activity. Examples are given.
Patent GB-1029792-A (GB)
Title: Improvements relating to variable-capacitance diode modulators
IPC: H03C1/14
Filed: 1963-02-20
Abstract: 1,029,792. Balanced amplitude modulators. KABUSHIKI KAISHA HITACHI SEISAKUSHO. Feb. 20, 1963 [Feb. 22, 1962], No. 6883/63. Heading H3R. A modulator comprises one or more variable capacity diodes D 1 , D 2  in a bridge network, varied by modulation E, and a rectifier diode D or Da in series or shunt respectively with the carrier input (from transformer T) to reduce to zero the forward carrier voltage through diodes D 1 , D 2 . Both D a  and D may also be used. If D a  is used, a resistor R 5  shunts diode D. D a  may be a Zener diode and thus limit the carrier input.
Patent GB-277393-A (GB)
Title: Improvements in and relating to apparatus for filling bottles, tins or other containers
IPC: B67C3/18
Filed: 1926-03-12
Abstract: 277,393. Broadhurst, H. F., and Birch, H. F. F. March 12, 1926. Bottling.-In apparatus for filling bottles and other containers by partially evacuating them, the incoming liquid, when it reaches the desired height, closing the end of the vacuum tube and preventing further entry of the liquid, the emptying of the interceptor or overflow receptacle is unobstructed and is effected by gravity alone, the receptacle being under a constant partial vacuum. Suction from a container 11 in communication with an air pump 12 draws air through a reducing valve 10 from an interceptor 7 disposed above the level of a liquid tank 4 and communicating with it by a pipe 8. The interceptor communicates by a tube 6 with a filling-head 3 so that the reduced pressure in the interceptor draws liquid 'into the bottle through a tube 5 dipping into the liquid and connected to the filling-head 3. The tube 5 leads into a passage 3<e>, Fig. 6, which conducts the liquid to a filling tube 3f, there being also provided in the head a vacuum tube 3h and a breaker tube 3i, this latter tube having a small orifice x permanently open to the atmosphere. In operation, a bottle being applied to the filling-head, liquid is sucked into it through the tube 5 until liquid reaches the vacuum tube 3h, whereupon further incoming liquid passes up the tube 6 to the interceptor 7. If the bottle is not removed, allowing the liquid in the tube 5, the tube 6, and the interceptor 7 to run back into the tank 4, the increased vacuum causes the reducing valve to close wholly or partly the connection to the container 11 and so stop or retard the flow of liquid to the interceptor. The reducing valve comprises a needle valve supported by a weight resting on a diaphragm which constitutes the base of the valve, but the valve may be disposed in the interceptor and be actuated by the level of liquid therein. The invention is applicable to rotary bottling machines, the bottle supports, filling-heads and interceptor being rotatable and the liquid tank either rotatable or fixed. In the latter instance, liquid from a supply tank 44, Fig. 5, flows to an annular channel 43<a> in a fixed member 38 and the filling tube 5 and interceptor discharge tube 45, which are rotatably mounted, communicate with the channel. Specifications 174,129 and 205,003 are referred to.
Patent GB-901911-A (GB)
Title: Improvements in or relating to methods of detecting the presence of inhomogeneities in magnetic fields
Inventor: ROBERTSHAW ROBERT GIBSON
IPC: G01R33/02
Filed: 1959-02-27
Abstract: 901,911. Magnetic tests. GENERAL ELECTRIC CO. Ltd. Feb. 29, 1960 [Feb. 27, 1959], No. 6932/59. Class 37. [Also in Group XL (a)] A cathode-ray tube 1 having a substantially flat screen 5 is fitted by non-magnetic rings 7, to slide within a bore in a magnet 3. The tube is short compared with the length of the bore and the spot on the screen is focused by the field, changes of spot shape, dimension or position during movement along the bore indicating an inhomogeneity in the region of the screen. Inhomogeneities may be removed by the application of a local field. In, for example, a long magnet for focusing a long electron beam, which comprises short tubular portions arranged end to end with their axes aligned, the magnetization may be adjusted by rotating portions with respect to one another. The scope of the claim is such as to include movement of a screen relative to a fixed beam.
Patent GB-1248222-A (GB)
Title: Radio frequency communication systems
Inventor: MARTIN DAVID JAMES REGINALD
IPC: H04B5/00
Filed: 1968-02-13
Abstract: 1,248,222. Radio signalling. COAL INDUSTRY (PATENTS) Ltd. 9 May, 1969, Nos. 6985/68 and 6986/68. Heading H4L. The system disclosed in Specification 1,239,231 is modified in that speech signals from the base station to the mobile station are transmitted along the line as frequency-modulated signals at a low radio-frequency and converted in a relay transmitter to a higher radio-frequency, signals from the mobile transmitter being converted to frequency-modulated lower radiofrequency signals, or demodulated at a relay receiver for transmission via the line to the base station.
Patent GB-227671-A (GB)
Title: A gas analysis apparatus
IPC: G01N9/30
Filed: 1924-03-19
Abstract: 227,671. Malone, J. F. J., Fox, J. T., and Malone, A. J. March 19, 1924. Gas analysis.-In apparatus for determining the density of a gas or for estimating the proportion of a gas in a gaseous mixture by determining the density of the mixture, the pressure-difference produced between the axial and peripheral portions of a rotating tube containing the gas is measured, preferably by comparison with the pressure-difference produced in a similar tube containing air. A hollow shaft 1 rotatable at high speed by means of a motor 3 is supported in gastight bearings 2 and carries a hollow circular disc 6, preferably of aluminium. Within the disc 6 are mounted two similar tubes 7, 8 connected to the shaft 1 by radial legs 10, 9 respectively, a diaphragm 16 in the shaft 1 preventing communication between the two tubes. The tubes 7, 8 terminate in open ends 13, 14 respectively, as shown in Fig. 2. Mounted in the bearings 2 are tubes 17, 18 leading to three-way cocks 19, 20 adapted to be operated together. The cocks 19, 20 communicate with branches 21, 23 leading to the indicating device and with branches 22, 24 leading respectively to the atmosphere and to the source of gas to be tested. The indicating device comprises tubes 33, 34 mounted in a fenestrated chamber 27 and communicating with a reservoir 25 containing liquid. At their upper ends the tubes 33, 34 communicate with hollow trunnions 36, 37 leading respectively to the tubes 21, 23 and mounted in fixed bearings 38, 39 so that the indicating device as a whole can be moved about the horizontal axis 36, 37. In operation, the cocks 19, 20 are turned so that the tubes 17, 18 communicate respectively with the tubes 22, 24, and the shaft 1 is rotated, causing a flow of air by way of the tubes 22, 17, 10, 7, and orifice 13 and a now of gas by way of the tubes 24, 18, 9, 8, and orifice 14. The cocks 19, 20 are then turned to connect the tubes 17, 18 with the tubes 21, 23 respectively. The reduction in pressure in each of the two parts of the system is indicated by the rise of liquid in the tubes 33, 34, the level being higher as the density of the gas is greater. The speed of rotation of the shaft 1 or the inclination of the indicating device is adjusted so that the liquid in the tube 33 is level with the zero mark on the scale, which may be graduated to indicate either the density of the gas under test in terms of air at the same temperature or the proportion of a particular constituent present in the mixture, for example the proportion of carbon dioxide in flue gases.
Patent GB-1113845-A (GB)
Title: Brake temperature indicating system
IPC: F16D66/00
Filed: 1967-02-14
Abstract: 1,113,845. Measuring temperature electrically. GOODYEAR TIRE & RUBBER CO. Feb. 14, 1967 [April 7,1966], No. 7025/67. Heading G1N. [Also in Division G3] In an alarm system for indicating when the temperature of a brake e. g. for the wheels of aircraft, is dangerously high, the temperature is sensed by a platinum resistor 22a, Fig. 2, arranged adjacent the brake, e. g. in the brake housing or in one of the tie bolts, and connected as a potential divider, with resistors 52, 54, for a stabilized 16. v. source 10,12, Fig 1, (see Division G3). The junction between resistors 52 and 22a is connected to the base of transistor Q5, via temperature compensating diode CR5, to whose emitter a reference voltage is supplied to determine the temperature at which a lamp 50 is energized. Under normal conditions transistors Q5, Q6 are conductive and transistor Q7 is non-conductive. As the temperature rises the voltage applied to the base of transistor Q5 rises to the level at which the transistor becomes non-conductive causing the reversal of the states of transistors Q6, Q7 and the illumination of lamp 50, the connection of resistor 54 into the emitter circuit of transistor Q7 producing instantaneous illumination of the lamp 50 on the transistor Q7 becoming conductive. For a system involving two lamps 28, 30, Figs. 1, 3 (latter not shown), one being illuminated when the brake temperature is too high for safe landing and take-off and the other being illuminated when the temperature is so high that structural damage may occur, the circuit of Fig. 2 is duplicated for each lamp, using a common potential divider and two reference voltages 16,18. A continuous indication of the brake temperature may also be provided on meter 46 connected to circuit 36 to which signals from the sensor are fed.
Patent GB-214402-A (GB)
Title: Improved coating for moulds such as are used for iron and steel castings
IPC: B22C3/00
Filed: 1923-03-12
Abstract: 214,402. Gray, A., and Robinson, J. March 12, 1923. Mould materials.-From 1 to 30 per cent of ferro-titanium is added to a substance such as finely ground silica for use in coating moulds particularly those for casting iron and steel. Specifications 20152/92, 15555/11, and' 135,798 are referred to.
Patent GB-226077-A (GB)
Title: Improvements in well boring apparatus
IPC: E21B10/26
Filed: 1924-03-19
Abstract: 226,077. Redfern, C. G., (Brunt, P.). March 19, 1924. Bore-hole apparatus. -In a well-boring tool of the core-cutting type provided also with teaming cutters so that core-cutting and reaming may be performed simultaneously, pivots for the reaming cutters are dispensed with, the thrust on said cutters being wholly taken by an abutment on the carrier. The tool shown is formed in three sections a, b, c threaded together, the lower section a carrying core-cutters d and being formed in two parts, the lower part having two downwardly converging grooves in which core-grips v are slidably mounted; the intermediate section b has an enlargement g provided with longitudinal rectangular recesses receiving the shanks of reaming cutters i, the cutter shanks having wedgeshaped projections k engaging similar grooves in the sides of the recesses, while springs o act through cutter extensions m to hold the cutters i in their rearward positions with their backs against flats l on the part b. Passages s lead water to the cutters i from the interior of the tool; a plug may be inserted in the lower end of the part c to prevent water from reaching the core, the plug being removed when a long core is required.
Patent GB-867763-A (GB)
Title: Improvements in and relating to insulated conductors
IPC: H02K3/34
Filed: 1960-02-29
Abstract: 867,763. Moulding insulation around conductors. GENERAL ELECTRIC CO. Feb. 29, 1960 [March 4, 1959], No. 7091/60. Class 87(2). Insulation including a thermosetting or thermoplastic binder is moulded around a conductor by enclosing the conductor and insulation in a pressure - constructable mould, enclosing the mould in a heat shrinkable material, gradually heating said material to cause it to constrict while the insulation binder is in a fluid state, and thereafter causing said binder to solidify while the insulation is constricted. A stator bar having conductor strands 4 insulated at 4a and comprising a straight portion to be fitted into the slot of an armature and curved end portions is wound with layers of insulating tape 5 coated and impregnated with a binding thermosetting resin and the straight section is then enclosed in a mould comprising opposed angle pieces 6, 7. The mould is surrounded with a heatshrinkable tape 12 and placed in a tank which is evacuated and heated, sections 6a, 7a determining the width of the insulation. Hydraulic pressure is then applied to the mould by introducing molten asphalt to the tank at aout 150‹C. and is maintained until the resin is cured. A thermoplastic binder which may comprise the pressure fluid may alternatively be used and with thermosetting binders a tape may be provided to prevent contamination of the insulation by the pressure fluid.
Patent GB-213268-A (GB)
IPC: A21D2/20
Filed: 1924-03-19
Abstract: 213,268. Oelwerke Noury & van der Lande Ges., and Kroeber, T. March 19, 1923, [Convention date]. Cereal preparations.-In a process for improving flour and other milling preparations by treating them with peroxides, such as benzoyl peroxide, and other compounds containing high proportions of oxygen as described in Specification 102,967, [Class 58, Grain &c.], the improver is finely divided before mixing with the flour. It may be ground as described in Specification 200,508 and used dry or wet, or suspended in water and then wholly or partly freed therefrom by filtering, drying with hot air &c. The particles of improver should be approximately of the size of the oil particle in the flour. Reference has been directed by the Comptroller to Specification 200,508.
Patent GB-1486951-A (GB)
Title: Time and temperature-dependent enzymatic indicators with discontinuable indication
IPC: G01N33/02
Filed: 1975-02-20
Abstract: 1486951 Insolubilized pancreose lipase FOOD CONTROL AB 20 Feb 1975 [21 Feb 1974] 7130/75 Heading C3H [Also in Division G1] Pancreas lipase is bound to a carrier consisting of a 1 cm.<SP>2</SP> piece of nylon fabric by means of glutaraldehyde.
Patent GB-554997-A (GB)
Title: Improvements in or relating to dry cells or batteries and methods of assembling same
IPC: H01M6/30
Filed: 1942-01-16
Abstract: 554,997. Galvanic batteries. MULLARD, S. R., and HAYES, C. F. M. Jan. 16, 1942, No. 7259/43. Divided out of 554,926. [Class 53] Dry batteries having elements of flat form are made by inserting a number of electrode plates into a corrugated container element which engages a sufficient length of their perimeter to support them in spaced substantially parallel relation, securing the edges of the plates to the container element, inserting dipolarizing and electrolyte units into the pockets between the plates, sealing a cover member over the open side of the container, and compressing the assembly to press adjacent surfaces of the battery elements into contact. The Figure shows an assembled battery, before compression, in which a corrugated container element 41, which may be of proofed paper, forms three sides of a box-like container. The electrodes, consisting for example of zinc plates 17, with a carbon coating 18, are inserted edgewise through the open side into every fourth corrugation and their edges are secured therein by sealing material. A porous sheet 50 of paper or other material is inserted into the central corrugation between each pair of electrodes, and in the compartments formed on either side of it are placed respectively depolarizing and electrolyte units 43, 44. The member forming the fourth side of the casing is applied before or after compression of the assemblage. The porous sheets 50 may be omitted, the electrode plates being inserted in alternate corrugations of the container. The container may be formed of two elements, each comprising a pair of opposed or adjacent walls, or of four elements each comprising a single wall. Adjacent edges of the container elements are secured by adhesive or an overlapping sealing-strip.
Patent GB-634790-A (GB)
Title: Improvements relating to electric push button switches
IPC: H01H13/00
Filed: 1947-03-17
Abstract: 634,790. Press-button retractive switches ; snap-action switches ; mechanical switches without quick action. BRITISH THOMSONHOUSTON CO., Ltd. March 17, 1947, No. 7327. Convention date, March 18, 1946. [Class 38 (v)] A switch for starting and stopping a fluorescent lamp and adapted to be mounted in the lamp-holder disclosed in Specification 618,128, is controlled by two separate but co-operating push-buttons 26, 33. The housing 10 has a partition 14 through which the spring-plunger 27 of the button 26 moves, and the button 33 carries a tube 36 containing contact balls 19 urged apart by a conducting spring 37. To start the lamp, the button 26 is pressed, whereby a contact plate 32 on the plunger 27 connects contact blades 23, 24 and the plunger 27 engages the tube 36 to snap the balls 19 over projections 38 and bridge contact blades 16, 17. This operation completes the heating circuit through the lamp filaments 22, 25 ; release of the button 26 then breaks the starting circuit and the lamp remains lit through the contacts 16, 17 which remain closed, the button 33 is pressed. In a modification, Fig. 8, pressing of the button 26 flexes a spring contact arm 45, and an extension 48 engages a conducting disc 49 on a frictionally-supported insulating button 33 so that the disc bridges the contacts 16, 17.