baber/WOPTO huggingface dataset:
Patent GB-653601-A (GB)
Title: Improvements in photographic printing method
IPC: G03C7/18
Filed: 1948-12-06
Abstract: 653,601. Photographic masking, colour photography. KODAK, Ltd. Dec. 6, 1948, No. 31574. Convention date, Dec. 6, 1947. [Class 98 (ii)] A colour or contrast correcting mask for a photographic transparency is made by sealing the transparency within two transparent sheets, one of which bears on its outer surface at least one light-sensitive emulsion layer, exposing this layer through the transparency and developing the mask therein without separating the sheets. The masked transparency may then be viewed in an illuminator or may be printed, thus corrected prints may be made with no registration difficulty and no damage to the original transparency, and the method is of particular use for copying mounted colour transparencies, which latter, after production of satisfactory copies, may be removed from their enclosing sheets and returned to the customer. Of these two sheets the unsensitized one may be of glass, but preferably both sheets are of film base material such as cellulose ester and they are stuck together around their edges with the transparency in between by adhesive, by pressure alone or by heat and especially high-frequency heating; thus, as shown in Figs. 1-3 a transparency 11 is placed between cellulose acetate sheet 10 and light-sensitive film 14 which are a little larger than the transparency, and have already been sealed along two edges to facilitate positioning of the transparency in the partly formed envelope. Spring pressure members 15 hold the assembly in place during sealing of the remaining edges by electrodes 16 connected to high-frequency generator 17 or other electrical heating means. Simultaneously with sealing masking exposure may be effected by light source 23 through opal glass 20, light filter 21 and iris disc 20 and then the whole packet is immersed in hardening, developing or colour developing and fixing baths successively to produce the result of Fig. 3 in which mask-image portions 18 of film 14 are complementary to image portions 12 of transparency 11. Mechanical and electrical details of the sealing and exposing apparatus are furnished in Figs. 4 and 5 (not shown). Any form of tone or colour correction mask may be produced, such as those of Specifications 551,614, 553,196, 570,524 and 595,149. Specification 568,196 also is referred to.
Patent GB-356017-A (GB)
Title: A method of and apparatus for comparing colors and for controlling the actuation of other apparatus
IPC: G01J1/16
Filed: 1930-10-21
Abstract: A light-comparison apparatus, principally intended for comparing the colours or transparencies or textures of two samples, and consisting of two photo-electric cells each receiving light reflected by, or transmitted through, one of the samples, the cells being connected to amplifying thermionic valves arranged in a bridge circuit including an indicator, is stated to be applicable for controlling the baking of bread.  The colour of the bread is compared with a standard by means of the apparatus and the indicator is adapted to control the operation of the oven or to operate an alarm.
Patent GB-886002-A (GB)
Title: A method of dehydrogenating titanium metal powder
Inventor: YOBLIN JACK ALAN
IPC: C22B34/12
Filed: 1959-09-16
Abstract: A method of dehydrogenating titanium powder comprises  (a) heating the powder under vacuum until hydrogen begins to be evolved,  (b) allowing the pressure to rise to 400-600 m.m. Hg while increasing the temperature to 650-750 DEG C.  (c) restoring a high vacuum and maintaining a temperature between 400 DEG C. and 750 DEG C.  The pressure during (a) may be reduced to 10-2 m.m. Hg and at the same time the temperature may be raised to 400 DEG C.  The pressure during (b) may be controlled by a throttle valve in the suction line to the vacuum pump and during (c) may be 10-3 m.m. Hg.  The powder cakes or sinters during the treatment and after cooling to below 400 DEG C. in vacuo the cake may be ground to produce a hydrogen-free titanium powder of the same grain size as the starting material.
Patent GB-753341-A (GB)
Title: Improvements in or relating to the construction of metal tanks
Inventor: FLOWER CHARLES FREDERICK GEORG
IPC: B65D88/06
Filed: 1953-11-16
Abstract: 753,341. Tank vehicles. GASTON BARBER, Ltd. Oct. 25, 1954 [Nov. 16, 1953], No. 31725/53. Class 108 (1). [Also in Group XXIX] An elliptical end cap of a tank vehicle has sections 1 and 2, each having a continuous integral flange, with curved parts 3 and plane parts 3a and 3b which latter are connected as by welding, the flanges also acting as stiffeners. Alternatively, the cap may comprise four sections.
Patent GB-629792-A (GB)
Title: Improvements in regenerators
IPC: F25J5/00
Filed: 1947-12-01
Abstract: 629,792. Heating and cooling gases by 'direct contact &c. AIR REDUCTION CO., Inc. Dec. 1; 1947, No. 31728. Convention date, May 24. [Class 64(i)] Relates to regenerators used in the separation of a gaseous mixture into its constituents by liquefaction. According to the invention a regenerator, by which heat is transferred between streams of gases passing alternately through the regenerator, comprises a metal shell 5 with outlets 6, 7 and containing heat transfer material 15 through which are gas passages of small cross-sectional area, heat conducting members 19 being arranged longitudinally at one end of the shell. The material 15 consists of corrugated metal coils wound on cores 17 and separated by spacers 18. The regenerator is cooled by passing nitrogen at atmospheric pressure from a pipe 11 upwardly through the regenerator and exhausting it through a pipe 9. A valve 10 is then reversed to pass air at 5 atmospheres pressure from a pipe 8 downwardly through the regenerator to a pipe 12. The air in cooling deposits moisture and carbon dioxide on the metal surfaces. The rods or members 19 of copper or aluminium tend to equalise the distribution of heat in the regenerator, thus reducing the maximum temperature difference between the air and nitrogen and so facilitating the revaporization of the carbon dioxide when nitrogen is again passed through the regenerator. A modified regenerator is described in which the coils 15 are replaced in the upper part by small pieces of metal and the lower part is filled with rods or bars twisted about their longitudinal axes to form helical grooves to provide passages for the gases. U.S.A. Specification 19,140 is referred to.
Patent GB-920110-A (GB)
Title: An improved seaming head for machines for double-seaming the ends into tinplate containers and the like
IPC: B21D51/32
Filed: 1960-09-15
Abstract: 920,110. Seaming. D. H. CLARKE. Dec. 4, 1961 [Sept. 15, 1960], No. 31742/60. Class 83 (4). A can seaming mechanism for seaming ends on can bodies consists of a cylindrical frame in two parts 4 and 5 having in the lower part 5 four spindles 17, 18 mounted in bearings with levers 19, 20 carrying seaming rollers R1, R2 movable in a plane normal to the axis of rotation of the head and having operating levers 21, 22 attached to the spindles from the outer ends of which flexible bands or chains 25 connect them to two concentric sleeves 26, 27; two spindles 17 carry first operation rollers R1 to one sleeve 26 and two spindles R2 carry second operation rollers R2 to the other sleeve 27 each sleeve having a lever carrying a roller 29, 30 which engages with a cam 15, 16 carried on the spindle of a planet wheel 12, 13 mounted in the upper part of the head frame and driven by a sun wheel 11 mounted on a sleeve 6 driven at a different but fixed speed relative to the head, the upper and lower parts of the head frame being partially rotatable relative to each other and lockable together at any point in this partial rotation by means of adjusting bolts 7 and 9. This adjustment is to enable cans of different sizes to be seamed. Attached to the head frame 4 is a driving sleeve 3 surrounding spindle 1 which carries a chuck 2. In operation, the head frame 4, 5 and the gear-wheel 11 are, by gears attached to the sleeves 3 and 6, rotated in the direction of the arrows, the gearwheel 11 at a slower speed than the head frame. A can and loose can end are held against the chuck 2. Due to the relative rotation of the sleeves 3 and 6 the cams 15 and 16 rotate. As cam 15 turns, the roller 29 mounts the cam and turns sleeve 26 which, through the flexible chain links, moves levers 21 inwards and thus brings the first operation rollers R1 into engagement with the can end to perform the first operation of double seaming. As the head 4, 5 continues to rotate the roller 29 passes off the cam 15 and roller 30 mounts the second operation cam 16, thus rotating the sleeve 27 and bringing the second operation rollers R2 into engagement with the can end to complete the double seam.
Patent GB-1109913-A (GB)
Title: Improvements in or relating to optical objectives of variable equivalent focal length
Inventor: MERIGOLD PETER ARNOLD
IPC: G02B15/14
Filed: 1965-07-26
Abstract: 1,109,913. Zoom lenses. RANK ORGANISATION Ltd. July 26, 1966 [July 26, 1965], No. 31812/65. Heading G2J. A zoom lens has a front normally stationary member, movable members, and a stationary rear member, wherein the front member is divided into three portions and focusing for different object positions is effected by movement only of the second or middle portion which is convergent and has a focal length lying between 0À25f A  and 1À0f A  (where f A  is the focal length of the complete front member when focused for an infinitely distant object) whilst the first and third portions are divergent with focal lengths lying numerically between 1À5f A  and 7À5f A . As shown the movable middle portion is formed by a pair of simple convergent components (i.e. S 1  and S 3  are variable). Optical data are given for three examples in the first of which, Fig. 1, the arrangement of zooming members is as in Specification 1, 064, 323 and in the other two, Figs. 2 and 3 (not shown) they are arranged as in Specification 1,109,912.
Patent GB-768040-A (GB)
Title: Improvements in or relating to the crystallisation of nitrates from nitric acid solutions of calcium phosphate
IPC: C01F11/44
Filed: 1954-11-03
Abstract: A process for the crystallization of calcium nitrates by cooling a solution obtained by treating impure calcium phosphate with nitric acid, which solution may also contain an ammonium salt, and separation of the nitrate crystals from the mother lye and finely divided impurities contained therein by straining through a coarse-meshed filtering cloth, is characterized in that the solution is cooled in batches and the crystallization in each batch is nitiated by the addition of seed crystals mainly comprising calcium nitrate, when the solution is between 2 DEG  and 10 DEG C. below the saturation temperature, whereby the main body of crystals produced has a granular size less than 2 m.m., while at least 80 per cent by weight of the crystals produced have a granular size between 0.5 and 1.5 m.m., preferably between 0.5 and 1.0 m.m.  The raw calcium phosphate is dissolved in nitric acid containing 50 to 65 per cent by weight HNO3, and nitrate of lime dust added, preferably when the temperature is 4 DEG  to 7 DEG C. below the saturation temperature. The average granular size of the crystals may be regulated by varying the number of grains of seed crystals added.  The solution is moderately stirred during cooling to keep the crystals formed suspended, and the suspension is then filtered through a filter cloth having a mesh of 0.3 to 0.5 m.m., which permits the finely divided insoluble impurities to pass through with the mother lye, and retains the crystals formed.  By the process crystals of calcium nitrate tetrahydrate, and, when the nitric acid used contains ammonium nitrate, crystals of 5 Ca(NO3)2.NH4 NO3.10H2O, are obtained. Examples are given of processes within, and, for comparison, outside the invention.
Patent GB-648858-A (GB)
Title: Improvements in circuits for automatic frequency-correction
IPC: H03J7/04
Filed: 1947-12-02
Abstract: 648,858. Automatic tuning control. PHILIPS ELECTRICAL, Ltd. Dec. 2, 1947, No. 31854. Convention date, Dec. 5, 1946. '[Class 38 (iv)] In a circuit arrangement for automatic frequency correction with respect to a master wave when the master wave fails, its function is taken over by an auxiliary master wave, preferably in the form of a frequency spectrum. A single side-band superheterodyne receiver comprises a first local oscillator 3 which is variable to give a first intermediate frequency which is converted at 5 by a second fixed oscillator 11. The second intermediate frequency, after removal of one side band at 6 is detected at 7 and utilized at 9. Automatic tuning correction is effected by a discriminator 10 tuned to the second intermediate frequency and arranged to supply a correcting voltage to a thermionic reactance 12 forming part of the frequency determining circuit of the oscillator 11. An output from oscillator 11 is also fed to a synchronizing discriminator 13, to which is also supplied from oscillator 15 a spectrum of frequencies 4 cs. apart, so as to provide a control voltage which is fed through a time constant circuit 17 to reactance 12 to maintain oscillator 11 in synchronism with the nearest frequency in the spectrum from oscillator 15. During normal reception, the discriminator 13 is blocked by a voltage obtained from the detector 7 after rectification at 18, and the oscillator 11 is maintained at its correct frequency by means of the second intermediate frequency wave. If the received carrier wave fails, the discriminator 13 is opened and oscillator 11 is maintained in synchronism with the nearest frequency in the spectrum from oscillator 15, until the carrier is restored. The spectrum of frequencies 4 cycles apart is produced by frequency modulating oscillator 15 with a 4 cycle wave from an oscillator 16. In a modification, the auxiliary spectrum is produced by one or more multivibrators and is synchronized with an output from oscillator 11 after frequency reduction. In this case the suppressing voltage during normal working is applied to the multivibrator. Specification 640,351 is referred to.
Patent GB-1101287-A (GB)
Title: Fire-resisting doors
IPC: E06B5/16
Filed: 1966-07-15
Abstract: 1,101,287. Fire-resistant doors. INVENTIO A.G. 15, July, 1966 [21, July, 1965], No. 31859/ 66. Heading E1J. A fire-resisting door having metal panels 1, 2 comprises a window opening closed by spaced-apart wired plateglass panels 12, 13 between which a perforated material 16 substantially unaffected by fire, e.g. metal, is arranged and spaced therefrom.
Patent GB-1356631-A (GB)
Title: Gas-turbine plant
IPC: F02C9/24
Filed: 1971-07-07
Abstract: 1356631 Gas turbine plant BROWN BOVERISULZER TURBOMASCHINEN A G 7 July 1971 [9 July 1970] 31995/71 Heading F1G In a gas turbine plant, a by-pass conduit including a flow regulating element, extends from a point in the working fluid circuit between the preheater and the heater to a point between the first stage turbine (which drives the compressor) and the second stage turbine (which drives an output shaft). The closed cycle plant shown in Fig.1 comprises compressor 1, working fluid preheater 6, heater 2, H P turbine 3' driving the compressor, L P turbine 32 driving a useful load, and a working fluid cooler 7. A by-pass duct 11 including a control valve 10 extends from point 12 between the pre-heater 6 and the heater 2 to point 13 between the H P and L P turbines. A by-pass duct 9 including a valve 8 extends between an intermediate stage of the compressor and a point upstream of the pre-cooler 7. The closed cycle plant shown in Fig. 2 comprises L P compressor 11 and H P compressor 12 with an interstage cooler 7, working fluid pre-heater 6 and heater 2, H P turbine 31 driving the L P and H P compressors and an L P turbine 32 driving a generator 4. A first by-pass duct 11' extends from point 12 between the pre-heater 6 and the heater 2 to point 13' between the H P and L P turbines, as in Fig. 1, a second by-pass duct 112 extends from point 15 between the L P and H P compressors to point 132 in the L P turbine 32. The by-pass ducts 11' and 112 contain control valves 10' and 102 which are connected to a control device 16 such that in the upper load range (100% to 50%) control is by means of the control valve 10' in the first by-pass conduit 11' while in the lower load range (50% and below) control is by means of the control valve 102 in the second bypass conduit 112. The circuit is so designed that the mass of working fluid in the L P part of the circuit between the outlet of the L P turbine and the inlet of the L P compressor is greater than that in the H P part of the circuit.
Patent GB-904679-A (GB)
Title: Process for preparing granular thorium dioxide of definite particle size and spherical shape
IPC: C01F15/00
Filed: 1960-09-16
Abstract: Spherical thorium dioxide gel particles are prepared by dispersing a thorium hydroxide hydrosol in a water-immiscible inert liquid and promoting gel formation by adding to and mixing with the dispersion a solution in a waterimmiscible inert liquid of ammonia or hexamethylene tetramine.  Suitable inert liquids are toluene or carbon tetrachloride.  According to an example, thorium hydroxide sol was emulsified in toluene to form droplets having a mean particle size of 13 microns.  Toluene saturated with ammonia was then added while stirring and the emulsion filtered to recover gel granules which had an average particle size of 30 microns.  On drying and calcination, the average particle size was 15 microns.
Patent GB-1468473-A (GB)
Title: Method for the preparation of steryl beta-d-glucoside palmitates
IPC: C07J17/00
Filed: 1975-07-31
Abstract: 1468473 Steryl - 6 - 0 - palmitoyl - # - D- glucosides NIPPON SHINYAKU CO Ltd 31 July 1975 [14 Aug 1974 (2)] 32068/75 Heading C2U  Steryl - 6 - O - palmitoyl - # - D - glucosides are prepared by reacting steryl-6-O-sulphonyl- #-D-glucosides with alkali metal palmitates. Steryl refers to cholesteryl, #-sitosteryl, campesteryl or stigmasteryl or their mixtures, and the starting materials contain R<SP>2</SP>SO 2 - wherein R<SP>2</SP> is alkyl or optionally substituted aryl. These starting materials are prepared from steryl-#- D-glucosides and R<SP>2</SP>SO 2 Cl.
Patent GB-1062534-A (GB)
Title: Method of and apparatus for extinguishing burning jets of natural gas or petroleum or the like from bore holes
Inventor: STEGBECK HELMUT
IPC: A62C3/04
Filed: 1965-07-27
Abstract: A jet of burning natural gas or the like issuing from bore-holes is extinguished by means of a curtain of extinguishing agents formed under pressure around the burning jet so that the drag effect of the jet is utilised to convey the agents to the height of projection. The extinguishing agents are halogenated hydrocarbons alone or mixed with a liquefied propellant gas.  They may be projected towards and into the jet by three nozzle tube rings (2) in series vertically and of different design so as to achieve the maximum impact upon the jet.
Patent GB-1332224-A (GB)
Title: Athletic swing measurement
IPC: G08C15/06
Filed: 1971-07-08
Abstract: 1332224 Measuring force electrically ATHLETIC SWING MEASUREMENT Inc 8 July 1971 [27 Nov 1970] 32204/71 Heading G1N [Also in Division A6 G4] Apparatus for measuring acceleration, torsion and flex during an athletic swing (e. g. of a golf club) and subsequently displaying the measurements comprises means 26 - 30 for transmitting the data in time-division multiplex form to a decoder and memory 32 for display. The measurements are made by an accelerometer 15 Fig. 1 and two strain gauges 16, 17 or by three accelerometers 65 - 67, Fig. 4 (not shown) arranged in a pack which can be strapped to an athlete's limb or to a club or bat. Signals from these devices are fed to a commutator and control circuit 24 together with timing pulses 25 and then applied to a low frequency FM (or pulse AM) transmitter 26. The signals are received and fed to an AID converter 31: the timing pulses are removed and the data is digitized and decoded in a decoder and memory circuit 32. A display control 33 reads the memory every third pulse to obtain continuous readings from one of the devices. The data may be displayed on a CRT or oscilloscope 34 and/or on an  oscillograph 35; means Fig. 3 (not shown), are incorporated for selecting the desired data for display and for determining the display times. An average reading 40 may also be obtained and may be compared with "ideal" reference data to obtain an indication of the deviation of the measured swing from the "ideal". The apparatus may be used for improving an athlete's movements or for selecting the correct golf club, bat etc. for a particular athlete.
Patent GB-422647-A (GB)
Title: Improvements in electric cables
IPC: H01B11/20
Filed: 1933-11-20
Abstract: 422,647. Cables. SIEMENS & HALSKE AKT.-GES., Siemensstadt, Berlin. Nov. 20, 1933, No. 32347. Convention date, Nov. 23, 1932. [Class 36] In a high-frequency cable having one or more twin cores formed by connecting in parallel the diagonally opposite conductors of a spiral quad, each twin core is individually surrounded by a metal screen which is insulated from earth. In the cable shown in Fig. 1, four conductors forming a twin core 11, 12 are surrounded by a screen 13 which is spaced from the lead sheath 14 by an insulating layer 15. The screen 13 may consist of a thin lead sheath or of an open or closed winding or braiding of metal wires or strips an armouring of wires 17 applied on a jute bedding 16 completes the cable. Fig. 2 shows a construction wherein twin cores 21-23, which are individually surrounded by screens 24 and insulation 25, are enclosed in an armoured common lead sheath 27. Electrostatic screens 26 which may be connected with or insulated from the lead sheath 27 may be inserted between the twin cores.
Patent GB-803741-A (GB)
Title: Device for guiding and sliding wooden furniture drawers
IPC: A47B88/14
Filed: 1955-11-11
Abstract: 803,741. Drawers. TOFANI, R. Nov. 11, 1955 [Nov. 15, 1954], No. 32357/55. Class 52(1) Wooden drawers 4 and the side walls 2 of the associated furniture are provided with co-operating grooves 5 and fillets 3, Fig. 1, or fillets 5a and grooves 3a, Fig. 4, disposed intermediate the top and bottom of the drawer, and a substantial part of the weight of the drawer is taken on rollers 7 or 7a mounted at the front of the side walls. As shown in Fig. 1, rollers 7 work in the drawer grooves 5. As shown in Fig. 4, rollers 7a are mounted in a downwardly-enlarged part 8a of groove 3a and fillets 5a run thereon. Metal plates 11 may be mounted in the grooves to slide on the fillets. The upper surface of the front end of the fillets may be tapered. The Specification describes several ways in detail of mounting the rollers 7 or 7a.
Patent GB-809438-A (GB)
Title: Improvements in or relating to electromagnetic relays
Inventor: YULE WILLIAM HENRY DRURY
IPC: H01H50/56
Filed: 1954-07-02
Abstract: 809,438. Electromagnetic relays. STANDARD TELEPHONES & CABLES Ltd. July 1, 1955 [July 2, 1954], No. 32480/55. Divided out of 809,431. Drawings to Specification. Class 38 (5). The subject-matter is included in Specification 809,431. Specifications 809,433, 909,434 and 809,437 also are referred to.