baber/WOPTO huggingface dataset:
Patent GB-1093733-A (GB)
Title: A photographic camera with a coupled photo-electric light meter
IPC: G03B7/083
Filed: 1966-03-14
Abstract: 1,093,733. Photographic camera shutters. P.G. SARABER. March 14, 1966 [March 15, 1965], No. 11173/66. Heading G2A. A photographic camera having a coupled photoelectric light meter is provided with epicyclic gearing for adjusting the aperture angle 3 of a rotating shutter and for simultaneously moving a diaphragm slide 13 over the photo-cell 15 in such a way that the ratio of the area of the shutter aperture to the uncovered photo-cell area remains constant. The shutter comprises two blades 1, 2 which are relatively rotatable to vary the aperture 3, and which are then rotated together to effect exposure. Rotation of a milled segment 8 in the direction 14 until intercepted by a stop adjusts the blades and also moves the slide 13 in the upwards direction (as shown) to cover the photo-cell, which may have lateral areas masked Fig. 6 (not shown). As a result of this arrangement, the amount of light transmitted to the film is controlled by adjusting the exposure time and not the diaphragm aperture. A second slide 16 containing an opening 18 and a colour filter 19 is used to partially mask the photo-cell thus allowing for a filter factor when the colour filter 19 is used. In another embodiment Fig. 3 (not shown) a diaphragm slide (21) with two openings of different aperture acts in conjunction with a slotted slide (23). The camera viewfinder Fig. 9 (not shown) may have the light meter pointer (32) visible therein against a scale (38).
Patent GB-212774-A (GB)
Title: Improvements in burners for solid metaldehyde and the like
IPC: F23D3/00
Filed: 1923-04-25
Abstract: 212,774. Cope, H. A., (Elektrizitõtswerrke Lonza). April 25, 1923. Porous-block and like burners.-A metaldehyde &c. burner with a resilient feed device has a stop for the fuel in the form of a central plate P placed over the middle part of the block B and connected by arms A to the burner posts T. The arms convey heat from the outer parts of the flame to the stop plate which effects vaporization of the central part of the block and so ensures a constant flame. An arm G which can be used as a handle is adapted to be turned over the block before the flame is extinguished and has projections Z which press the block out of contact with the stop plate. Specification 181,512 is referred to.
Patent GB-664947-A (GB)
Title: Improvements in or relating to conveyors
IPC: B65G17/02
Filed: 1949-04-27
Abstract: 664,947. Endless conveyers. GORDON, S. H., THOMPSON, C.. and CABLE BELT, Ltd. April 27, 1950. [April 27, 1949] No. 11220/49. Class 78 (i). In conveyers of the kind consisting of endless cables which carry, by means of cross-straps, an endless belt, the crossstraps are secured to the cables by means of a head through which the straps pass, at least those parts of the head which engage the cable being formed of resilient flexible material and shaped to provide a groove for the cable. In one form, Fig. 1, the head consists of a moulded rubber block 10 provided with screwthreaded grooves 16, 17 and lugs 11, 12. The head is positioned between two cables, not shown. A slot is formed transversely of the block through the lugs 11, 12 to receive the cross-strap 19 which is secured in place by a pin 20 passing through aligned holes in the lug 12 and strap 19. Alternatively, the slot is metal-lined and the strap free to slide within it. In the form shown in Figs. 4, 5 two blocks 25 of rubber are bolted between side plates 22, 23. A cross-strap 30 passes through slots in the side plates and is retained by two split pins 31. inserted in the strap 30. Each block 25 is provided with cable-engaging grooves 27, 28 provided with corrugations 29. In the form shown in Fig. 7, each of the blocks 25 is replaced by a pair of blocks 34 secured between the side plates by bolts 35 having enlarged centre portions. Specifications 641,817 and 641,854 are referred to.
Patent GB-885721-A (GB)
Title: Ion exchangers containing sulphydryl groups
IPC: C08F8/34
Filed: 1959-04-02
Abstract: Water-insoluble ion-exchange resins are prepared by reducing the sulpho-chloride of a benzene-insoluble cross-linked organic polymer containing aromatic nuclei to sulphydyl groups by treating the polymer in aqueous medium with an excess of a polysulphide. The polymers are copolymers of styrene, substituted styrene or vinyl naphthalenes with for example divinyl or trivinyl benzene, divinyl toluene, xylene or ethylbenzene, divinyl ether, ethylene glycol dimethacrylate or diacrylate, diallyl or ethylene glycol maleate with a gel or sponge structure in pearl form, and they are reacted with alkali or alkaline earth metal polysulphides, e.g. Na2S2, Na2S3, Na2S4, CaC2, CaS4 (NH4)2S2 at between 50 and 250 DEG  C. in an aqueous solution of pH 9-13.  The products may be used to absorb sodium ions from a common salt solution. Specifications 577,707, 654,706, 670,145, 700,470, 714,366, 779,994 and 885,719 are referred to.
Patent GB-802181-A (GB)
Title: Motor fuel composition
Inventor: LLOYD JOHN EDWARD
IPC: C10L1/02
Filed: 1956-04-13
Abstract: A fuel composition comprises an aliphatic oxygen compound which is not an aldehyde or an acid and a gasoline blend, the gasoline blend being such that when it contains 2.3 c.c. of tetraethyl lead per U.S. gallon it has a research octane rating of at least 6 octane numbers more than the research octave rating of a 75 per cent recovered distillate (clear) obtained from the gasoline blend.  The blend may consist of a light virgin naphtha having a final boiling-point below 350 DEG  F. and a research octave rating below 70, and a heavy catalytic reformate, which may be an ultraformate, platformate, or fluid hydroformate, with a research octave rating above 85.  The blend may contain 15 to 50 per cent by weight of the virgin naphtha. The composition may contain 1 to 40 per cent by weight of the oxygen compound.  The oxygen compound may be an alcohol, such as ethyl alcohol, isopropyl alcohol or an oxo alcohol, a ketone, an acetal, an ester, an ether, or a cyclic ether, such as furan and its derivatives. Compositions described contain ethanol, isopropyl alcohol, isopropyl ether, di-methyl furan, a mixture of alcohols obtained by oxidation of a virgin naphtha, and tetraethyl lead.
Patent GB-1027254-A (GB)
Title: Improvements in or relating to safety gates for hoists
Inventor: WARRY REGINALD FRANK
IPC: B66B13/04
Filed: 1964-03-17
Abstract: 1,027,254. Safety gates for builders; hoists. MARTIN HOIST & ENGINEERING CO. Ltd. Dec. 9, 1964 [March 17, 1964], No. 11303/64. Headings B8H and B8L. A cage-like structure adapted to be erected around the base of a mobile hoist comprises panels 10 and a gate 11 which is mounted on hinged 12 and which is arranged to be closed automatically when the hoist control is actuated to raise the hoist platform from its lowermost position and to be opened automatically when the platform arrives at its lowermost position. As the platform reaches its lowermost position, it depresses a link 27 to pivot a latch 25, about an axis 26, out of engagement with the gate 11 which is then opened by means of a weight 19 connected to a bracket 16 on the gate by a cable 17 passing over a pulley 18. The control cable 15 for the hoist motor passes through fixed guide rings 21, 23 and through a guide ring 14 on a bracket 13 secured to the gate. When the control cable is pulled to start the hoist motor, it pulls the guide ring 14 into alignment with the guide rings 21, 23, thereby closing the gate 11. As soon as the hoist platform starts to rise, the latch 25 drops into locking engagement with the gate.
Patent GB-556877-A (GB)
Title: Improvements in and relating to stands for mirrors, photo-frames and the like
IPC: A47G1/14
Filed: 1942-08-13
Abstract: 556,877. Stands for mirrors &c. LAPPER, F. Aug. 13, 1942, No. 11334. [Class 65 (ii)] A stand for a mirror &c. 2 comprises a clip 1 attached to the mirror and bent at its free end 1A to grip frictionally a pin 3A on a support 3, so as to hold the mirror in adjusted position. The support 3 may have a hole 4 by which the mirror may be hung on a wall &c. In another form, the curved end of 1 engages a similar curved end on 3 to form a frictional pinless hinge. The support may consist of bent wire.
Patent GB-796117-A (GB)
Title: Light sensitive diazotype layers containing waxes
Inventor: FREDERICK JOSEPH EDWARD
IPC: C08F2/50
Filed: 1956-04-13
Abstract: 796,117. Photographic diazotype materials, GENERAL ANILINE & FILM CORPORATION. April 13, 1956, No. 11348/56. Class 98(2) A photographic diazotype material comprises a base coated with a light-sensitive layer containing a diazonium compound a coupling component, a finely divided wax of melting point above 110F. and a dispersing agent capable of dispersing the wax in an aqueous medium, the wax comprising 1-28 per cent by weight of the total non-volatile ingredients in the lightsensitive layer. Waxes specified are paraffin wax, carnauba wax, spermaceti, beeswax, cerosin wax, chinese wax, flax wax, godang wax, Java wax, insect wax, ceresiii wax, and montan wax. The dispersing agent may be of the cationic, anionic or non-anionic type, and many suitable agents are specified including condensation products of ethylene oxide with long chain aliphatic amines, fatty acids, alcohols, phenols, or anhydrosorbitol, esters of fatty acids with amino alcohols such as triethanolamine, or with anhydrosorbitol, pentearythrytol or dispentaerythrytol, the reaction products of fatty acid ethanolamides and formaldehyde, various sulphates and sulphonates, and polymers or mixed polymers of acrylic, methacrylic and maleic acids. Where the wax contains a long chain fatty acid, a dispersing agent may be obtained in situ by adding an alkylolamine, morpholine or diethylamine. The wax is despersed in water by means of the dispersing agent, and added to the diazonium compound and coupling component, and any of the usual additives, and the resulting dispersion is coated on a suitable base. Colloid carriers such as polyvinyl alcohol may be included in the light-sensitive dispersions. Lists of suitable diazo compounds and coupling agents are given. The light-sensitive solutions may be coated on paper, cellulse acetate, textiles made from cotton, cellulse acetate batiste. regenerated cellulse or rayon, and other fibrous woven or felted textile materials. In the examples, aqueous dispersions of paraffin wax or spermaceti wax, with sorbitan monopalmitate the reaction product of ethylene oxide and sorbitan monopalmitate, and polyvinyl alcohol; paraffin wax with triethanolamine, polyvinyl alcohol and zirconium stearate; beeswax with oleic acid, aminopropanol and borax; and a mixture of camauba wax, beeswax and paraffin wax with a polyoxyalkylene sorbitan monolaureate or morpholine are added to sensitizing solutions containing a diazo compound, a coupler and the usual adjuvants, and coated on a base. U.S.A. Specification 2,537,919 is referred to.
Patent GB-1059308-A (GB)
Title: Electrode assembly
IPC: H01J29/82
Filed: 1965-03-01
Abstract: 1,059,308. Cathode-ray tubes. SYLVANIA ELECTRIC PRODUCTS Inc. March 17, 1965 [March 17, 1964], No. 11374/65. Heading HID. A cathode-ray tube electron gun, Fig. 1 (not shown), includes a first anode formed by two elements 53, 71 each comprising a tubular portion 55, 73 and an apertured endsection 27, 31, the tubular portions being telescoped one within the other with the aportured end sections oppositely disposed. The open end of element 71 is not in abutting engagement with clement 53 and the elements are maintained in axial alignment by at least three spaced crimps 85 on element 53 engaging the other element. As shown, two sets of three equi-spaced crimps 85, 63 onelement 53 respectively engage a frusto-conical end section 79 and a shoulder 76 of element 71. Alternatively, the crimps 63 may be replaced by a frusto-conical section of tubular portion 55, or may be omitted, tubular portion 73 then being formed with three equispaced' longitudinally-extending ridges which make element 71 a force-fit within element 53, Figs. 6 and 7 (not shown).
Patent GB-850118-A (GB)
Title: Improvements in or relating to the production of a controlled concentration of powder in a gaseous fluid
Inventor: ASHMAN ROBERT
IPC: B01F23/30
Filed: 1958-04-10
Abstract: 850,118. Mixing powder with gases. DUST CONTROL PROCESSES Ltd. April 10, 1959 [April 10, 1958], No. 11392/58. Class 86 In an apparatus for mixing and maintaining a pre-determined proportion of powder in a gas (as for the injection of powder into the combustion chamber or combustion products stream of an oilfired boiler) a gaseous fluid supply 10 (which may be compressed air) is divided at 12 into several branches of which the principal is 13 which passes through a mixing Venturi 19 to the outlet duct 20. A second branch 14 communicates with a chamber 21 closed by a porous tile 23 by which the air is evenly distributed and through which it passes to render fluid the powder 24. The gas with entrained powder then passes through a baffle 25 and orifice plates 27 to chamber 28 and by way of conduit 29 to the low pressure zone of the mixing Venturi 19 where it is mixed with the main stream. A third branch 15 may introduce air direct into the chamber 28. The velocity and/or proportion of powder in the delivered gas may be adjusted by the valves 16, 17, 18 and by changing the size of the orifices 27.
Patent GB-1418422-A (GB)
Title: Process for preparing dyeings and prints fast to light on fibrous materials
IPC: D06P5/04
Filed: 1973-03-09
Abstract: 1418422 Aftertreatment of dyed synthetic polyester materials HOECHST AG 9 March 1973 [10 March 1972] 11418/73 Heading D1B Textile materials of polyester fibres, which have been dyed or printed with an aqueous preparation of a water-insoluble dyestuff in the presence of a carrier are treated with organic solvents to improve light fastness by removing residual carrier. The after treament may be effected at 20 to 80C with 1, 1, 1-trichloroethane, benzene, 1, 2, 2-trifluorotrichloroethane, methylene chloride, methanol trichloroethylene, and perchloroethylene or mixtures of solvents.
Patent GB-368120-A (GB)
Title: Improvements in devices for fastening wooden handles to brushes and the like
IPC: B25G3/14
Filed: 1931-04-17
Abstract: 368,120. Broom handle fixings. HARTELT, A., 7, Hohenzollern-Allee, Gera, Thuringia, Germany. April 17, 1931, No. 11429. [Class 61 (i).] Fixing by screwed sockets with toothed holding - devices. - A handle e is secured in the socket g of a broom f by two screw threaded split aheet-metal sleeves a, h; the inner sleeve a is applied to the end of the handle and has inwardly directed teeth, whilst the outer sleeve is fitted inside the brush hole, the teeth being driven into the wood by screwing one sleeve into the other. The overlapping edges of the two sleeves interlock and prevent them from being unscrewed.
Patent GB-250404-A (GB)
Title: Improvements relating to safety and emergency attachments for tyres
IPC: B60B11/10
Filed: 1925-05-04
Abstract: 250,404. Ludwick, H. V., (Cornog, Spicer, & Ludwick Co.). May 4, 1925. Hoops and rings. - A metal ring 1 adapted to form an emergency support at the side of a pneumatic tyre is formed by first trueing a flat-section hoop by expanding chuck members 3, Fig. 2, which are actuated by screws 4 geared together in a central boss 4<a>. The hoop is next given a channel section by passing between rolls 5, 6, Fig. 4. In this operation, a poweroperated table is swung, on a pivot 8, across the inner periphery of the hoop to bring the flanges of the latter parallel with its axis. The shaped hoop is finally trued between fixed and movable profiled dies 9, 10 respectively, Fig. 5. Specification 182,448, [Class 144 (i), Wheels for vehicles], is referred to.
Patent GB-288996-A (GB)
Title: Improvements in telephone systems
IPC: H04Q3/00
Filed: 1927-07-19
Abstract: 288,996. Associated Telephone & Telegraph Co., (Assignees of Stehlik, R. F.). July 19, 1926, [Convention date]. Divided on 274,518. Drawings to Specification. Automatic and manual exchange systems. - For calls from an automatic exchange through one or more intermediate automatic exchanges to a manual exchange provided with call-indicator equipment, a register-controller at the criginating exchange after sending out the necessary routing digits transmits a signal to the manualexchange operator who connects up her call-indicator equipment and sends back a signal which causes the repeaters to be cut out, at each of the intermediate exchanges thus establishing a through metallic connection over which the register-controller transmits the remaining digits in code. The manual exchange may be employed for tandem connection to a further manual exchange, the first two lamp banks of the callindicator denoting the wanted exchange and the indicator serving also to control ringing from the tandem cord-circuit so that this only takes place when a subscriber in the tandem exchange is required. The invention is described with reference to a system identical with that described in Specification 274,518.
Patent GB-242317-A (GB)
Title: Process of purifying mineral oil products and the like
IPC: C10G19/00
Filed: 1924-05-09
Abstract: Mineral oils are freed from dark-coloured substances by treating with soap and alkali, separating from the sludge by centrifuging, filtration, or decantation, and finally washing with water if necessary.  The soap may be formed in the oil from fatty oils, fatty acids, or other saponifiable substances.  Salts, such as benzoates, acetates, ethyl-sulphonates, phthalates, m or p amino-benzene-sulphonates, a  or b  naphthaline-sulphonates, or sodium or potassium or magnesium chloride or sulphate or phosphate, may also be added.  In an example 1 kilogram of turbine oil is mixed at 25-30 DEG  C. with grams of crude naphthenic acid, 10 cc. of a 25 per cent solution of sodium benzoate, and 10 cc. of sodium hydrate of 38 DEG  B<\>ae., and allowed to stand for a day.  The oils may be first purified by other methods, e.g. by sulphuric acid, or fuller's earth or bleaching clay.  Reference has been directed by the Comptroller to Specifications 9179/94, 16134/01, and 26198/04.
Patent GB-1142351-A (GB)
Title: Process for the production of chloromethanes
IPC: C07C19/03
Filed: 1966-03-16
Abstract: 1,142,351. Chloromethanes. ALLIED CHEMICAL CORP. 16 March, 1966 [23 March, 1965], No. 11568/66. Heading C2C. Methyl chloride is prepared by the reaction of methanol with hydrogen chloride in the presence of zinc chloride, the process comprising (a) dispersing an aqueous 50-80% by weight solution of zinc chloride in methanol and/or gaseous hydrogen chloride, the aqueous solution becoming the discontinuous phase and the methanol and/or hydrogen chloride becoming the continuous phase, and if necessary contacting the dispersion with hydrochloric acid or methanol respectively, and (b) separating aqueous zinc chloride solution from the reaction products to leave a product containing methyl chloride. The hydrogen chloride used may be that formed by the chlorination of one or more of CH 4 , CH 3 C1, CH 2 Cl 2  or CHC1 3  with Cl 2  in known manner, and may be used in the form of the mixture of products resulting from such a reaction, said mixture containing chloromethanes in addition to hydrogen chloride.
Patent GB-594802-A (GB)
Title: Improvements in and relating to titanium dioxide dielectric materials
IPC: C09C1/36
Filed: 1945-05-07
Abstract: Freely-divided titanium dioxide is rendered water-repellent by exposing it to the vapours of one or more organo silicon halides, and then mixed with a synthetic rubber, e.g., polystyrene or a synthetic resin, e.g., an alkyd resin to produce dielectric material. Preferably titanium dioxide, calcined at 1,350 DEG  C., is treated with 1-10 per cent. by weight of methyl silicon halides and mixed with 10-60 per cent. by weight of binder.  An azeotropic mixture of silicon tetrachloride and trimethyl chlorosilane is preferred but alkyl, aryl, aralkyl, and alkaryl derivatives may be used. Specifications 470,897, 572,740, [both in Group V], and 575,696, [Group VIII], are referred to.ALSO:Finely divided titanium dioxide is rendered water-repellent by exposing it to the vapours of one or more organo silicon halides, and then mixed with a synthetic resin, e.g. a rubbery polystyrene or an alkyd resin, to produce dielectric material.  Preferably, titanium dioxide, calcined at 1350 DEG  C., is treated with 1-10 per cent by weight of methyl silicon halides and mixed with 10-60 per cent by weight of binder.  An azeotropic mixture of silicon tetrachloride and trimethyl chlorosilane is preferred, but alkyl, aryl, aralkyl and alkaryl derivatives may be used. Specifications 470,897, 572,740, [both in Group V], and 575,696, [Group VIII], are referred to.ALSO:Finely divided titanium dioxide is rendered water-repellent by exposing it to the vapours of one or more organo silicon halides, and then mixed with a synthetic rubber, e.g., polystyrene or a synthetic resin, e.g., an alkyd resin to produce dielectric material.  Preferably titanium dioxide, calcined at 1.350 DEG C., is treated with 1-10 per cent. by weight of methyl silicon halides and mixed with 10-60 per cent. by weight of binder.  An azeotropic mixture of silicon tetrachloride and trimethyl chlorosilane is preferred but alkyl, aryl, aralkyl and alkaryl derivatives may be used.  Specifications 470,897, 572,740 and 575,696, [Group VIII], are referred to.
Patent GB-1035215-A (GB)
Title: Fluorine-containing polymers
IPC: C08G61/04
Filed: 1962-03-27
Abstract: The invention comprises polymers containing repeating units of formula -CHR- where R is a perfluoralkyl, perfluoraryl, perfluorochloroalkyl or perfluorochloroaryl radical, obtained by polymerizing a diazo compound of formula R-CHN2 in the absence of light, at a temperature below 100 DEG  C. and in the presence of a catalyst.  The catalyst may be a glass containing SiO2 and B2O3.  In examples polymers are obtained by allowing 2,2,2-trifluorodiazoethane, 2,2,3,3,4,4,4 - heptafluorodiazobutane, 2,2-dichloro-2-monofluorodiazoethane, pentafluorophenyldiazomethane and a mixture of 2,2,2-trifluorodiazoethane and 2,2,3,3-tetrafluoro - 1,4 - bisdiazo - n butane, to remain for various periods of time in sealed glass tubes in the dark.
Patent GB-924966-A (GB)
Title: Improvements in or relating to the manufacture of refractory bodies
IPC: C04B35/46
Filed: 1960-04-04
Abstract: In the production of sintered zirconium dioxide by heating to temperatures above 2000 DEG F, from 0,5 to 2% by weight of magnesium, cerium or aluminium oxides, or compounds giving rise thereto, are added as a sintering catalyst.  According to an example, a zirconium dioxide of particle size from 1 to 4 microns was mixed with 0,5 to 1,5 of magnesia, 1 to 1,5% by weight of cerium or 1% by weight of alumina, moulded and sintered at 2150 DEG C.  An apparent density of between 5,3 and 5,5 was attained.