baber/WOPTO huggingface dataset:
Patent GB-756379-A (GB)
Title: Disconnectable transportable tower crane
IPC: B66C23/34
Filed: 1953-12-02
Abstract: 756,379. Collapsible tower cranes. CHANTIERS ET ATELIERS DE CONSTRUCTION DE LYON. Dec. 2, 1953 [Dec. 18, 1952], No. 33499/53. Class 78 (4). Rollers 5 on the lower section 4 of the mast of a tower crane run on tracks 6 on a road or rail truck 2 and struts 7 are pivoted to the truck and to the mast section so that the mast is erected when the rollers 5 are pulled by a cable 8 drawn by a winch 9. The centre of gravity of the crane remains between the truck axles during erection. When the crane is being transported the rollers 5 rest in notches 10, Fig. 2, in the tracks and the upper section 13 is carried by a single axle carriage 14, Fig. 3. To connect the upper section to the lower the latter is first moved to the position shown in Fig. 2 to permit ramps 12, Fig. 3, to be inserted in the notches 10. The cable 8 is then payed out to allow the mast section 4 to move to the position shown in Fig. 3 in which it is aligned for connection of the upper section 13. The two sections are then erected together. The upper section 13 carries a jib 15 and is mounted to slew relatively to the lower section.
Patent GB-517502-A (GB)
Title: Improvements in or relating to optical systems
IPC: G02B5/20
Filed: 1938-11-18
Abstract: 517,502. Lenses. KODAK, Ltd, Nov. 18, 1938, No. 33549. Convention date, Nov. 19, 1937. [Class 97 (i)] An attachment for a photographic objective comprises a light filter which absorbs the shorter wavelengths of the spectrum, and a lens system which reduces the chromatic aberration of the objective in that part of the spectrum which is transmitted by the filter. As shown, the attachment consists of a plano-convex lens 12 and a plano - concave lens 13 arranged with their plane surfaces facing each other and with the filter 14 cemented between them. Alternatively the use of a separate filter can be avoided by making one of the lenses of the filter material. The system 12, 13 has zero power for a single wave-length, e.g., for the D line, positive power for longer wave-lengths and negative power for shorter wave-lengths. Data are given.
Patent GB-642172-A (GB)
Title: Improvements in and relating to the construction of vehicles
Inventor: CRELLIN GEORGE CHARLES
IPC: B62D31/04
Filed: 1947-12-19
Abstract: 642,172. Motor vehicles. FALGAR MOTOR CO., Ltd. Dec. 19, 1947, No. 33576. [Classes 79 (iii) and 79 (iv)] [Also in Groups XXXII and XXXIII] A passenger carrying vehicle m which a central raised gangway 3, under which the motor 32 is disposed, serves a lower row of seats 11 in facing pairs via lateral gangways 5 and an upper row of seats 15 in oppositely facing senses via lateral gangways 12. The space between adjacent pair of seats 11 may accommodate the fuel tank 37, batteries and the radiator 35.
Patent GB-487308-A (GB)
Title: Multiple lead pencil
IPC: B43K24/12
Filed: 1937-12-04
Abstract: 487,308. Pencil holders. KINZINGER, A., and REUSCH, H. Dec. 4, 1937, No. 33622. Convention date, June 10. [Class 146 (iii)] In a pencil holder comprising a number of lead-holders a', slidable in a guide d in the outer casing c and provided with knobs h movable in slots e in the casing, a spring b is provided in each guide to press the shank a of the corresponding lead-holder outwards so as to close the slot. Each shank is provided with one or more projections f, g adapted to engage the ends or enlargements of the corresponding slot to retain the holder in projected or retracted position.
Patent GB-1010091-A (GB)
Title: Improvements in or relating to halogen-containing polymeric compositions
IPC: B65B9/06
Filed: 1964-08-18
Abstract: A thermally-stable chloral polymer of formula <FORM:1010091/C3/1> where R is an alkyl radical of 1 to 17 carbon atoms, aryl or substituted aryl, a and c are each integers from 1 to 40 inclusive, b and e are each integers from 0 to 40 inclusive and d is an integer from 1 to 400 inclusive; with the proviso that the sum of a + (b x d) + (c x d) + e is at least 10, the sum of e + (b x d) constituting up to 70 mol. per cent of the polymer composition is prepared by reacting at 80 to 220 DEG  C. under acid conditions, a chloral polymeric glycol of number average molecular weight of at least 6000, with from 0.2 to 14 parts per part of the polymer, of an organic acid anhydride, continuing the reaction until the terminal hydroxyls of the polymer chains have been converted to organic ester groups and then recovering a chloral polymeric dicarboxylate of number average molecular weight of at least 6000 and a reaction rate constant for thermal degradation at 255 DEG  C. of less than 1.6% per minute.  The chloral polymeric glycol may be reacted in a finely-divided solid state with the anhydride in liquid phase. Acetic anhydride is the preferred esterifying compound and a chloral-dichloroacetaldehyde copolymer diacetate preferably containing 40 to 60 mol. per cent dichloroacetaldehyde the specified polymer.
Patent GB-1474057-A (GB)
Title: Radiation polymerizable composition and process
IPC: C08F299/02
Filed: 1974-07-31
Abstract: 1474057 2 - Acetoxy - (ethyl or propyl-) acrylate DOW CHEMICAL CO 31 July 1974 [1 Aug 1973] 33851/74 Heading C2C [Also in Division C3]  The preparation of 2-acetoxyethyl acrylate is described by reacting 2-hydroxyethyl acrylate and acetic anhydride at elevated temperature, optionally in the presence of a catalytic amount of a cation exchange resin. The corresponding 2-acetoxypropyl ester is obtained using 2- hydroxypropyl acrylate as a reactant.
Patent GB-1437874-A (GB)
Title: Opto-couplers
IPC: H03K17/795
Filed: 1974-07-31
Abstract: 1437874 Transistor switching circuits POST OFFICE 31 July 1974 33876/74 Heading H3T A light emitting diode type of opto-coupler is protected by a circuit limiting the maximum current through the coupler to a predetermined value, I oc , set by a resistor 2, of value R, and the emitter-base voltage, V BE  at which a transistor 3 becomes conductive. I OC =V BE /R. As the current through the light-emitting diode, forming part of the opto-coupler, increases so the voltage drop across resistor 2 rises until the transistor turns on to shunt further current around the diode. The protected opto-coupler may be used to form a D-relay (Fig. 2, not shown) which can be used in a register access relay set of a telephone exchange.
Patent GB-205395-A (GB)
Title: Process for the production of albumose solutions
IPC: C07K14/78
Filed: 1922-12-12
Abstract: Lasting albumose solutions are prepared by dissolving albuminous bodies in hot alkali and adding to the formed solution higher fatty acids or materials containing them, such as fats, for example cocoa fat, and substances to restrain the dissociation of the alkaline salts of the fatty acids, such as common salt, alcohol, or acetone. In an example keratine is dissolved in hot caustic potash and ammonia, and alcohol and ricinoleic acid are added to the solution.
Patent GB-1126224-A (GB)
Title: Improvements in or relating to edge trimmers for lawns
IPC: A01G3/06
Filed: 1965-08-09
Abstract: 1,126,224. Edge trimmers. I. STYLES and J. STYLES. 5 Aug., 1966 [9 Aug., 1965], No. 33987/65. Heading A1F. An edge trimmer comprises a cutting disc 1 rigidly secured to or integral with a roller 4, and a handle 7 pivoted about the axis of the disc. The roller may be roughened on its outer surface or fitted with a tyre, and a foot plate 9 is provided on the handle. The disc may be chamfered on one or both faces.
Patent GB-1100366-A (GB)
Title: An electronically controlled heater
IPC: G05D23/24
Filed: 1966-07-29
Abstract: 1,100,366. Automatic temperature control. MALLORY TIMERS Ltd. July 29, 1966 [Aug. 2, 1965], No. 34194 / 66. Heading G3R. An automatic temperature control system comprises means whereby the initial heating of the apparatus is effected by passing both positive and negative half waves of the A. C. supply through the heating element, the apparatus being subsequently maintained at a constant temperature by passing alternate half waves only through the heating element. The apparatus includes a heating element 10 and a thermistor 11 responsive to the heating effect thereof, a variable resistor 20 being provided to set the temperature at which the apparatus is required to operate. Initially, when the thermistor is cold, its effect is to trigger a unijunction transistor 19 approximately at the beginning of a half cycle thereby producing a gating signal 26 to render a thyristor 13 conductive whereby substantially complete half cycles pass through the heating element 10 whilst the half cycles of the reverse polarity pass through the heating element 10 by way of a diode 34 and a normally closed contact 30 of a relay 29. Thus the apparatus rapidly attains the desired temperature by the application to the heating element 10 of full wave power. When the desired temperature has been attained the condition of the thermistor 11 is such as to inhibit conduction of the thyristor 13 whereupon a capacitor 33 is charged by way of a diode 28 thus to operate the relay 29 having a self maintaining contact 31. Operation of relay 29 opens contact 30 thus preventing the passage of the reverse half waves through the heating element 10 and the temperature of the apparatus is maintained by the application to the heating element 10 of half wave power only controlled by the thyristor 13 in conjunction with the thermistor 11.
Patent GB-185082-A (GB)
Title: Process for coating with other metals cerite metals and their alloys
IPC: C23C10/34
Filed: 1921-12-20
Abstract: 185,082. Merck, E. [Firm of]. Aug. 22, 1921, [Convention date]. Alloys.-Objects of cerite metals or alloys are coated' with other metals, in particular aluminium, magnesium, and zinc. Eutectic alloys consisting of 95 per cent of cerium and 5 per cent of iron are referred to.
Patent GB-745769-A (GB)
Title: Improvements in or relating to the treatment of light metals
IPC: C22C1/02
Filed: 1953-12-09
Abstract: 745,769. Refining light metals and alloys. KAISER ALUMINUM & CHEMICAL CORPORATION. Dec. 9, 1953 [Dec. 15, 1952], No. 34301/53. Class 82(1). Molten light metals such as A1 and Al-base alloys are treated prior to casting to provide metal free from or substantially free from gas and other non-metallic impurities by providing a body of molten metal in a receptacle having a moisture containing atmosphere, withdrawing metal in a continuous stream past a source of fluxing material, which fluxing material is introduced into the flowing stream so that substantially only that portion which is being withdrawn from the receptacle is in intimate mixture with the fluxing material. Fig. 1 shows a furnace chamber or receptacle 1 containing molten metal 2. Molten metal flows continuously through top hole 3 below the level of the metal in the receptacle. Adjacent the top hole a refractory tube 7 is positioned to introduce a fluxing gas such as Cl or N to bubble up through the flowing metal and is confined by side walls 11 and front wall 12 to form a protective cover over the metal surface. Metal leaving the receptacle is under-poured into a conveying trough 21, the rate of flow being controlled by. a valve 19. This trough is provided with a cover 23 and a dry gas atmosphere may be maintained in the trough to prevent contamination of the flowing metal. In the modification shown in Fig. 7 metal flows from the receptacle 1 into an adjoining chamber in which it is treated with gas passed through tubes 65. Metal leaves the second chamber through tap hole 69 and enters the conveying trough at substantially the same level the flow being controlled by valve 70. Among the alloys which may be treated in this way are those of composition Cu 3À8-4À9 per cent, Si up to 0À5 per cent, Fe up to 0À5 per cent, Mn 0À3-0À9 per cent, Mg 1À2-1À8 per cent, Zn up to 0À1 per cent, Cr up to 0À1 per cent, A1 the balance and Cu 1À2-2À0 per cent, Si up to 0À5 per cent, Fe up to 0À7 per cent, Mn up to 0À3 per cent, Mg 2À1-2À9 per cent, Zn 5À6-6À1 per cent, Cr. 0À18-0À4 per cent, Ti up to 0À2 per cent, Al the balance. U.S.A. Specification 2,301,027 is referred to.
Patent GB-1030942-A (GB)
Title: Process for the desulphurisation of combustion gases
IPC: C01B17/60
Filed: 1964-08-21
Abstract: Combustion gases are desulphurized by contacting the hot gases with an oxidation catalyst e.g. Pt or V2O5 to oxidize SO2 to SO3 and subsequently adsorbing the SO3 by passage over a solid carbonaceous material, e.g. activated charcoal or coke.  The catalytic oxidation and the adsorption of SO3 may take place in either a fixed, moving or fluidized bed or a dust cloud. In the example, exhaust gases from an oil furnace are passed over a Pt wire catalyst at 450 DEG  C. and then through a fixed bed of activated carbon at 150 DEG  C.  The adsorbent may be regenerated by heating to 300-400 DEG  C. or by treatment with H2O, when H2SO4 is produced.
Patent GB-195146-A (GB)
Title: Improvements in rubber treads for steps, staircases and the like
IPC: E04F11/16
Filed: 1921-12-21
Abstract: 195,146. Martin, W. G., and North British Rubber Co., Ltd. Dec. 21, 1921. Treads and wearing-surfaces.-Rubber treads for staircases, steps, and the like comprise transverse ribs 6 of rectangular or rhomboidal section with flat upper wearing surfaces 10, which alternate with complementary rectangular, triangular, or rhomboidal grooves 11 and are connected by an integral backing 7. The upper wearing surfaces may be provided with slight grooves 12.
Patent GB-1180899-A (GB)
Title: Improvements in or relating to Continuous Belt-Type Filter Arrangements.
IPC: B01D33/00
Filed: 1968-07-19
Abstract: 1,180,899. Moving band filter. KOMLINESANDERSON ENG. CORP. 19 July, 1968, No. 34461/68. Heading B1D. A moving, endless filter band 14 is entrained round a vacuum drum, which dips into slurry to be filtered (Fig. 1, not shown) and round a pair of rolls 12,13, of which at least roll 12 is hollow, open at both ends and perforated to enable liquid squeezed from the band in passing round the roll to drain into the roll and out of its ends. This prevents liquid accumulating in the band, where it would cause sagging and misalignment. Sprays 20 and/or 22 direct washing water on to the band, and the hollow roll draws off water from between the band and roll at points 15, 16. The holes 27 in the roll 12 are arranged in four axial rows, 90 degrees apart round the roll, and staggered axially (Fig. 3, not shown). The holes are chamfered and the ends of the roll are supported by stub-shafts and spiders.
Patent GB-820625-A (GB)
Title: Power transformers for mechanical current converters
IPC: H02M1/26
Filed: 1955-12-02
Abstract: 820,625. Converting. LICENTIA PATENTVERWALTUNGS-G.m.b.H. Dec. 2, 1955 [Dec. 2, 1954], No. 34541/55. Class 38 (2). A power transformer capable of carrying more than 1000 amps. for supplying mechanical contact converters in six phase bridge connection having switching chokes, has secondary windings comprising at least three open zig-zag windings each consisting of at least two portions developing voltages equal in value and phase displaced by 120 degrees. There may be two groups of such windings fed from delta and star connected primary windings reapectively, Figs. 1a, 1b, to give 30 degrees phase change between output voltages. Tappings on the primary windings can then give voltage variation without phase change (Figs. 2a, 2b, not shown). When each secondary winding comprises two parts from each of two phases, a series, Fig. 3a, to parallel, Fig. 3b, change in connections is possible to halve the output voltage. A corresponding reconnection from the arrangement of Fig. 1a to a known arrangement (Fig. 4b, not shown) gives a 1: #3 voltage change. Alternatively, the secondary windings may be reconnected into the known arrangement of three open diametrical windings and a delta connected tertiary winding (Fig. 5b, not shown).
Patent GB-411483-A (GB)
Title: Improvements in or relating to the production of aldol condensation products
IPC: C08G2/00
Filed: 1932-12-06
Abstract: Aldol condensation products, suitable for use inter alia as foam or froth producing agents, are obtained by treating an aldol, in presence of water, with an amount of an alkali only sufficient to maintain the mixture just alkaline to phenolphthalein during the reaction.  The water is preferably, wholly or in part, the waste water from a previous condensation.  The duration of the reaction is controlled by regulation of the temperature and/or of the concentration of the alkali solution added.  In an example, 6-8 litres of commercial acetaldol (which is acid to phenolphthalein) is diluted with 3-4 litres of water, 35-40 grams of caustic soda in the form of a 30 per cent aqueous solution are added and the mixture is warmed to 45 DEG C. to start the condensation, whereafter further rise of temperature is prevented; the mixture is then allowed to stand, the top aqueous layer is drawn off for use in further reactions, and the orange resinous liquid lower layer is the required product of an average molecular complexity C12.
Patent GB-1471408-A (GB)
Title: Electrical machine
IPC: H02K3/34
Filed: 1974-04-11
Abstract: 1471408 Insulation for dynamo-electric machines WEIR PUMPS Ltd 11 April 1974 [20 July 1973] 34615/73 Heading H2A In an electrical machine having a winding conductor surrounded by interturn insulation, the conductor comprises a plurality of parallel connected sub-conductors, at least two of the sub-conductors being each individually surrounded by insulation capable of withstanding the same electrical potential difference as the interturn insulation, any remaining sub-conductors being surrounded by sub-conductor insulation, the interturn insulation being capable of withstanding a greater electrical potential difference than the sub-conductor insulation. This arrangement of the insulation is said to facilitate insulation testing during and after assembly of the machine.
Patent GB-521963-A (GB)
Title: Improvements in electrolytic condensers
IPC: H01G9/00
Filed: 1938-11-29
Abstract: 521,963. Coating with metals. MALLORY PATENTS' HOLDING CO., Ltd. Nov. 29, 1938, No. 34736. Convention date, March 3. [Class 82 (ii)] [Also in Group XXXVI] In making an electrode for an electrolytic condenser a strip 10 of fibrous material, such as gauze, is led over rollers 11, 15, 20, along - with a second similar strip 12, together with longitudinal conducting strips of foil 13, 14, if these are used, and terminal wires 21. A backing strip 16 of brown paper is fed in at roller 15 and aluminium is sprayed from a gun 17. After passing roller 20, the paper backing 16 and gauze strip 12 are stripped off. The gauze 12 may be used as the front strips in 'a subsequent spraying operation. Specification 433,481, [Group XXXVI] is referred to.
Patent GB-1391366-A (GB)
Title: Mowing machines
IPC: A01D34/66
Filed: 1972-07-25
Abstract: 1391366 Mowers K MORTL 25 July 1972 [30 July 1971] 34756/72 Heading A1F In a disc mower, a series of disc shaped blade supports 1 carrying cutter blades are driven from a tractors p.t.o. 25 and belt drive 26 via a vertical sleeve 3 which has a bevel gear 24 at its upper end and carries at its lower part, the innermost blade support 4 and a toothed or chain wheel 10 which transmits power to the other cutters. The sleeve 3 is coaxially mounted on a vertical shaft 6 which is connected by a plate 8 to a beam 7 supporting the cutters and which allows the beam 7 to pivot in a horizontal plane between a range of positions. A stop 12 is provided to hold the beam in the required position and a bearing 11 and oil seal (not shown) is located in the beam 7 for the sleeve 3.
Patent GB-968764-A (GB)
Title: A device for cultivating plants
IPC: A01G7/00
Filed: 1962-09-12
Abstract: 968,764. Treating plants. O. RUTHNER. Sept. 12, 1962 [Sept. 14, 1961], No. 34793/62. Heading A1E. Apparatus for cultivating plants and establishing the conditions necessary for their growth comprises a cultivating chamber divided into at least three separate regions I, II, III. The root of the plant is located in a container 1 having a double jacket provided with connections 2, 3 for the supply and discharge of a cooling or heating medium. The part III of the cultivating chamber has connections 11, 12 for introducing and discharging gases and other materials for changing the climatic conditions in this part and also for extracting air samples. The part 17 of the plant is enclosed in a transparent cover 18 provided with connections 21, 22 having the same function as the connections 11, 12 and connected by a conduit 23 having a branch conduit 24 controlled by flaps 26 so that air for the region II can be led to a control point 25. The connections 11, 12 are similarly connected. A water supply system 28 is also provided and the plant may be cultivated in a hydroponic system.
Patent GB-521979-A (GB)
Title: Improvements in or relating to the manufacture of high pressure containers
IPC: B21C37/15
Filed: 1938-11-30
Abstract: 521,979. Making compound high pressure containers. DORTMUND-HOERDER HUTTENVEREIN AKT.-GES. Nov. 30, 1938, No. 34853. Convention date, Dec. 14, 1937. [Class 83 (ii)] [Also in Group XXVIII] A high pressure container comprises a hollow cylindrical body of sufficient general strength to withstand the longitudinal stresses and having ends of sufficient thickness to withstand the transverse stresses also the central part of the cylinder being strengthened by a number of rolled and longitudinally welded sheet metal plates. The longitudinally welded joints are arranged to be offset relatively. In one form, Fig. 2, a forged cylinder c with ends formed as flanges d or having a screw thread to receive a flange e has a stepped transitional portion between the cylindrical wall and the thickened end or head so that each of the sheet metal plates f bears against a vertical edge, the outermost layer being secured by a ring g rolled, welded and shrunk thereon.
Patent GB-492736-A (GB)
Title: Process and apparatus for the separation of solid matter from liquids
IPC: B04B1/18
Filed: 1936-12-21
Abstract: 492,736. Centrifugal machines. AKTIEBOLAGET SEPARATOR. Dec. 21, 1936, No. 35047. Void. Convention date, Dec. 24, 1935. [Class 23] Solids. are removed from liquids in a separator bowl provided with peripheral apertures 10 which can be opened and closed while the bowl is rotating, the bowl also having apertures 16 just clear of the sludge space, which permit the discharge of liquid from the bowl before the apertures 10 are opened. A hollow cylindrical slide 11 attached to the cylinder 15 is operated by fluid from the pipe 13, to control the opening- and closing of the apertures 10. The apertures 16 may be fitted with exchangeable nozzles through which a small quantity of liquid discharges as long as the bowl is full, or the apertures 16 may be controlled by the slide 11 so that it opens these apertures before it opens the apertures 10 for the discharge of the solids. In the modification shown in Fig. 4, the bowl has a hood 19 pressed by springs 20 to make a tight joint by means of packing 21 over the apertures 16. The hood is lifted by a lever 23 when the apertures are to be opened. In another modification the hood is raised by electromagnetic means.
Patent GB-903735-A (GB)
Title: Improvements in or relating to foundation garments
IPC: A41C3/00
Filed: 1958-10-31
Abstract: 903,735. Brassieres. PLEHN, H. M. Oct. 31, 1958 [July 1, 1958], No. 35084/58. Class 141. In a brassiere or corset, an arcuate band 14, 15 of open-mesh stretchable material is secured around the lower edge of each breast cup 10, 11, horizontally stretchable sections 24, 25 are provided below the cups and a non-stretchable panel 26 between them. In a modification, the sections 24, 25 are replaced by a single panel extending below the cups and the panel 26.