baber/WOPTO huggingface dataset:
Patent GB-1242191-A (GB)
Title: Magnetic recording system having gray scale reproduction
IPC: H04N5/78
Filed: 1969-01-09
Abstract: 1,242,191. Magnetic devices. E. I. DU PONT DE NEMOURS & CO. 9 Jan., 1969 [10 Jan., 1968], No. 1442/69. Heading H1P. [Also in Division H4] Grey scale reproduction in the magneto-optic reproducing system described in Specification 1,195,329 is provided by applying a spatially (or time varying) periodic magnetic field to the receptor member (ferromagnetic thin film such as nickel-cobalt alloy which exhibits the longitudinal Kerr magneto-optic effect) in addition to the magnetic field derived from a primary magnetic image on a magnetic tape. A spatially periodic magnetic field may be provided by a high coercivity magnetic layer magnetized in a periodic pattern which is disposed between the magnetic tape and the receptor member, the spatially periodic field preferably having a triangular waveform, or by means of a pattern of current conductors disposed adjacent the receptor member. The image reproduced by means of a plane polarized light beam reflected from the receptor surface and incident via an analyser on a detector (e.g. an image orthicon, vidicon or photographic apparatus, although it may be viewed directly) exhibits a grey scale based on the same principles as half-tone pictures. The spatial period or wavelength of the spatially periodic field is less than the desired resolution increment of the image to be reproduced. In a second embodiment the periodic field is time varying, its amplitude being adjusted to equal the sum of the coercivity of the receptor member and the largest local image field, and its time period being less than the response time of the detector, e.g. the eye. The time varying field generated for example by a triangular waveform generator is applied to the framing coil (see, Specification 1,195,329) and an intermediate high coercivity layer disposed between the magnetic tape and the receptor member serves as a transfer medium between the tape and receptor member, the image being transferred from the tape to the intermediate layer by framing bursts. Two coils may be utilized, one applying framing bursts in a direction transverse to the easy axis of magnetization of the receptor member, the other applying the triangular field in a direction parallel to the easy axis of magnetization of the receptor member.
Patent GB-617499-A (GB)
Title: Improvements in continuous casting machines
IPC: B22D11/14
Filed: 1947-01-18
Abstract: 617,499. Continuous casting - machines. RUSCOE, E. B., and TURNER, J. J. Jan. 18, 1947, Nos. 1695/47 and 1516/48. [Class 83 (i)] In a continuous casting machine in which molten metal is poured through a cooling ring on to a table which is lowered as casting con. tinues, the mechanism for lowering the table comprises a cable operated through an infinitely variable speed gear. The framework of the machine comprises a transportable boxlike structure built up from members 10, 11, 12, 13, 14. An extension 36 at one side houses a cylinder 37 for tilting a pot 31 about its pivot 32 so as to pour molten metal into a refractory member 29 leading to one or more moulds comprising cooled side walls 27 and bottom blocks 25 carried by a table 17. The table is mounted on L-shaped brackets 16, whose vertical limbs are guided in vertical channels 15 and are connected by a member 72 carrying an adjustable eye-bolt 73 to which is secured one end of the operating cable 75. This cable passes over a pulley 20, round a winding drum 65, round pulleys 70 and 71 and is then secured to the underside of the table 17. The drum 65 is driven from a motor 48 through an infinitely variable speed gear of any known kind, chain 55, bevel gears 54 and worm 61. The speed gear is adjustable from a hand wheel geared to a shaft 51. By this means the return movement of the table may be speeded up and the downward movement adjusted for the particular metal which is being cast. An indicator coupled to the brackets 16 may be arranged on the outside of the structure to show the length of the casting.
Patent GB-231964-A (GB)
Title: Improvements in printers' blankets
IPC: B41N10/04
Filed: 1924-01-22
Abstract: 231,964. Decker, A. F. Jan. 22, 1924. Paints; varnishes. - Printers' blankets comprise an ink-repellent layer 6, which may be applied as a number of successive coats, may be composed of a nitrocellulose solution and a softening- agent such as castor oil, lanolin, txicresyl phosphate, lard oil, cotton-seed oil, &c., in which metal powders have been ground. A suitable composition is 1 lb. of nitro-cellulose, 1 gallon of ethyl acetate, and 8 ozs. of castor oil for the first coats. For the top coats, the oil is omitted and 10 per cent of bronze powder is incorporated in the nitro-cellulose solution.
Patent GB-588092-A (GB)
Title: Improvements in or relating to internal combustion turbine power plants
IPC: F02C3/06
Filed: 1944-01-31
Abstract: 588,092. Gas turbine plant. HOWELL, A. R., and POWER JETS (RESEARCH & DEVELOPMENT), Ltd. Jan. 31, 1944, No. 1807. [Class 110 (iii)] A gas turbine plant, for providing a propulsion jet for aircraft, comprises two turbinecompressor units made up of freely-mounted oppositely rotating rotors with two tiers of bladings, the air compressed in each unit being transferred through a combustion chamber to the turbine in the other unit. Plant of this kind can be mounted in an aeroplane wing.
Patent GB-599382-A (GB)
Title: Radio transmitters with anode voltage modulation
IPC: H03C1/24
Filed: 1945-01-23
Abstract: 599,382. Valve modulating circuits. PATELHOLD PATENTVERWERTUNGS- & ELECTRO-HOLDING AKT.-GES. Jan. 23, 1945, No. 1823. Convention date, Jan. 4, 1944. [Class 40 (v)] In a radio transmitter in which the H.F. power stage is anode modulated, modulation of the same order of magnitude is applied additionally in antiphase to the grid of the power stage and in phase to the anode of the driver stage. Modulating signals from the output transformer 13 of the modulator 12 are applied to the anodes of the H.F. power valve 7. The audio e.m.f. appearing across a choke 9<1> in the cathode circuit of the valves 7 is applied over a blocking condenser to the winding 22 of a transformer 21. The e.m.f. across the winding 23 is applied as grid modulation to the valves 7, and that across the winding 24 as anode modulation to the driver valve 2. In another embodiment, Fig. 2 (not shown), the choke 9<1> and transformer 21 are omitted, grid modulation being derived from an additional winding on the transformer 13, and anode modulation for the valve 7 from a tap on the choke 14. Phaseadjusting networks may be included in the various modulation paths. The H.F. power stage, while preferably operated in class C, may alternatively operate in class A or B.
Patent GB-399189-A (GB)
Title: Improvements in the manufacture of incorrodible pipes or tubes
IPC: F16L58/02
Filed: 1932-01-21
Abstract: 399,189. Lining pipes in centrifugal machines. BARNETT, M. R., 5, Laurel Crescent, Keighley, Yorkshire. Jan. 21, 1932, No. 1825. [Class 87 (ii).] Relates to the centrifugal lining of a pipe comprising a plain metal cylinder c with a covering a and a lining b of asbestos-cement &c. The covering is first applied in layers to the reinforcing cylinder and allowed to set, whereupon the lining is applied centrifugally, the latter operation being performed by mounting the cylinder between two rotatable discs. The lining and covering are adapted to be of equal thickness. Reference has been directed by the Comptroller to Specifications 363,663, [Group XXVIII], and 367,387.
Patent GB-487422-A (GB)
Title: Improvements in electric traction and like control systems
IPC: B60L15/34
Filed: 1937-01-21
Abstract: 487,422. Actuating controllers. GRAY, W. T., and METROPOLITANVICKERS ELECTRICAL CO., Ltd. Jan. 21, 1937, No. 1843. Addition to 451,514. [Class 38 (iii)] In a system described in the parent Specification there is provided an auxiliary liquid control valve in parallel with the main control valve actuated by an electromagnet controlled by auxiliary contacts on the controller independently of the current limit relay, the auxiliary valve permitting a relatively small flow of liquid to cause a slow movement of the controller. The auxiliary contacts are disposed in relation to the contacts controlling the main control valve so that the auxiliary valve is opened when the controller is positioned in one or more sections between the main control positions but is closed at the actual control positions. Thus if the limit switch operates with the controller in a section having auxiliary contacts, the controller is moved slowly to the adjacent control position whereupon it is stopped until reclosure of the limit switch. The circuit through auxiliary contacts may be opened at one or more intermediate positions in a section so that the slow movement of the controller may be arrested at an intermediate position. The auxiliary valve may byepass the main control valve only or both the valve and the restriction through which the main control valve supplies the liquid pressure.
Patent GB-981322-A (GB)
Title: Improvements relating to armchairs
IPC: A47C7/18
Filed: 1964-01-15
Abstract: 981,322. Arm rests; upholstery. J. A. M. LADY LAWRENCE, [trading as LEED MANUFACTURING CO.]. Jan 15, 1964, No. 1862/64. Headings A4J and A4M. An armchair arm-rest comprises an armsupport tray 12 secured to the armchair and including a base 13 and surround walls 14, 15, 16, on elastomeric block 18 being removably seated and frictionally held in the tray 12. A replaceable fabric cover 19 is provided on the block 18.
Patent GB-307287-A (GB)
Title: Improvements in handles for portable and other articles and other purposes
IPC: A45C13/26
Filed: 1927-09-07
Abstract: 307,287. Waterer, J. W., and Barrow, Hepburn, & Gale, Ltd. Sept. 7, 1927. Divided on 306,230. Portmanteaux and hand and like bags.-In a compact stowing handle for portable articles and other purposes and comprising a longitudinally flexible handle capable of being brought into an arched position for carrying or of normally lying flat, approach and recession of the handle ends is effected by crank action. Each end of a handle 2 is looped over the crank-pin portion 3 of a crank 4, the outer ends 5 of which are pivoted in a staple-like fitting 6, the ends of the handle approaching one another when the handle is raised. A spring strip 10 in the handle is secured at its ends directly to the cranks 4. Means may be provided for keeping the handle in the raised or flat position.
Patent GB-195203-A (GB)
Title: Improvements in air filters
IPC: B01D46/12
Filed: 1922-01-23
Abstract: 195,203. Brown, A. G. Jan. 23,1922. Filtering.-Air filter frames are formed by cords, strings, or ropes 2, Fig. 5, with peripherally-projecting fibres, threaded through holes in a frame 1 to form a screen. Blue asbestos is specialty suitable for this purpose. Several such frames 1, Fig. 1, with the cords arranged in different directions are placed in a casing 3. Specifications 21661/13, 56/14, and 146,456 are referred to.
Patent GB-345727-A (GB)
Title: Asbestos mortar
IPC: C04B40/00
Filed: 1930-01-20
Abstract: A cellular cement-asbestos composition is prepared by mixing Portland cement, sand, water, and fibrous asbestos which has been blown with air immediately prior to mixing with the other ingredients so that air is entrapped in the fibres.  A suitable mix is 1-4 parts by volume of blown asbestos, 1-2 parts of Portland cement, and 2-4 parts of sand.  These are kneaded with a suitable amount of water for use.
Patent GB-575702-A (GB)
Title: Patterning mechanism in or for knitting machines
IPC: D04B15/74
Filed: 1944-02-03
Abstract: 575,702. Knitting-machines. CORAH & SONS. Ltd., N., and CLARKE, J. H. Feb. 3, 1944, No. 1955. [Class 74 (ii)] In patterning mechanism wherein jacks have butts at contrasting levels corresponding to a series of levers 24 actuated by projections 23 upon a pattern drum and wherein the jacks are depressed into out of range of a jack-raising cam 15, the jacks are so depressed as to afford a selection between more than two alternatives, in one of which the jacks miss the cam 15 and in others of which the butts are moved by the cam 15 to differing extents. The levers 24 are of different lengths so that the jack-engaging parts 124a, 124b of the levers are spaced circumferentially so that some of the jacks are allowed to engage the whole length of the cam 15, while others engage an intermediate part of the cam and are lifted to a lesser extent.
Patent GB-1021032-A (GB)
Title: Fabrication of articles composed of fibrous reinforced resin material
IPC: B29C70/52
Filed: 1963-01-16
Abstract: 1,021,032. Moulding hollow articles; laminates and laminating. UNIVERSAL MOULDED GLASS CORPORATION. Jan. 16, 1963 [Jan. 30, 1962], No. 1964/63. Headings B5A and B5N. [Also in Division F2] A plurality of strips of fibrous material are fed from reels 85, Fig. 1, via funnels 95, 96, 97, 98 into a thermosetting resin supply pan in which they are impregnated and from which they enter a tube-forming the structure A from which the formed tube is pulled by a tread-type puller mechanism B on a floor E below which is a cut-off mechanism F. The die structure, Fig. 4, comprises a cylinder 26 within which is a core 27 which extends upwardly through funnels 95-98 and is tapered where it enters the cylinder 26. A cylindrical sleeve 28 surrounds the die 26 to define a cooling zone 29, a steam heating zone 33 and a cooling zone 36. The core 27 is divided into chambers including a cooling chamber 40, a heating chamber 42 and a cooling chamber 43. The puller mechanism B comprises a pair of endless belts carrying tread shoes 70. The cutoff mechanism comprises a motor-driven cut-off disc 72 driven by a motor controlled by a switch actuated by the lower end of the formed tube. Resin, e.g. analkyd or unsaturated polyester resin containing carnauba wax as a lubricant, is maintained in the reservoir C at the level L. The reinforcement fibrous strips of cellulosic mats, felting, paper or woven glass or other fibre, are supplied from twelve reels 85, Fig. 3, in four groups of three so providing four layers R1-R4, Fig. 16, each comprising three longitudinally abutting or overlapping strips, the joints between the strips of each successive layer being offset. The strips may pass through resin baths for impregnation before entering the associated funnel. The strips may be fed in twos from pairs of adjacent reels, Fig. 20.
Patent GB-1386900-A (GB)
Title: Semiconductor layers
IPC: H01L21/205
Filed: 1973-01-15
Abstract: 1386900 Si layer SIEMENS AG 15 Jan 1973 [14 March 1972] 2010/73 Heading ClA [Also in Division C7] A Si epitaxial layer is produced on a substrate by depositing a Si seed layer by irreversible thermal decomposition of a gaseous Si compound in the absence of hydrogen halide, followed by depositing further Si from the same atmosphere at the same temperature but with the addition of hydrogen halide. A Mg-Al spinel or sapphire substrate may be preheated at T>1000‹ C. in H 2  or etched in H 3 PO 4  at 200-400‹ C., then coated with Si at T>1000‹ C. from SiH 4 /H 2  or T<1000‹ C. from SiH 4 /He. HCl or HBr is added after the seed layer thickness reaches 0À05-0À3 Á, and deposition continued under equilibrium conditions.
Patent GB-469169-A (GB)
Title: Improvements in and relating to the manufacture of alloy steels
IPC: C23C8/00
Filed: 1936-09-22
Abstract: Alloy steels with a high surface hardness value are produced by incorporating in a steel or alloy steel of low carbon content, in the absence of aluminium, a proportion of tantalum or niobium, e.g. 10 per cent in excess of that required to absorb the carbon which is capable of being absorbed and then nitrogenizing the alloy steel so produced.  The steels may also contain elements such as chromium (up to 30 per cent), tungsten (up to 20 per cent) and molybdenum (up to 10 per cent).  In an example an alloy steel containing up to 0,06 per cent of carbon and 2,0 per cent of niobium was nitrogenized at 575 DEG  C.  Specification 460,956 is referred to.
Patent GB-232696-A (GB)
Title: Improvements in or relating to fluorescent screens for x-ray purposes
IPC: G21K4/00
Filed: 1924-01-25
Abstract: 232,696. Levy, L. A., and Mason, J. W. Jan. 25, 1924. Fluorescent screens.-The screen consists of a thin sheet of waterproof material, such as cellulose nitrate or acetate, substantially transparent to the photographically active radiations emitted bv the fluorescent material with which said material is incorporated, together with a thin backing sheet of flexible waterproof material, such as celluloid, adherent thereto. The backing sheet may be a black or other colour different from that of the first sheet. The adhesive used may be insoluble in water, non-solvent with respect to the sheets, and of material, for example readily fusible gums such as dammar gum, shellac, or a mixture thereof, liquifying on heating and readily re-solidifying on cooling. The screen may be made slightly convex on the active side to obtain close contact with the photographic plate or film when in use. The Provisional Specification describes also a screen made of the usual materials and waterproofed by coating a thin sheet of celluloid on both sides.
Patent GB-900797-A (GB)
Title: Derivatives of 1-aminopropane
IPC: C07D213/38
Filed: 1959-01-20
Abstract: The invention comprises 1-(61-isobutylpyridyl - 21) - 1 - (p-bromophenyl)-3-dimethylamino- and -3-diethylamino-propane.  These compounds, which are analgesics, may be prepared by the following processes: (a) reacting 2-(p-bromobenzyl)-6-isobutylpyridine with b -dimethylamino- or b -diethylamino-ethyl chloride, bromide or iodide under alkylation conditions; (b) hydrogenation of related compounds containing ethylenic double bonds; (c) replacing by hydrogen a substituent so replaceable (e.g. chlorine, bromine or iodine by catalytic hydrogenation, or N­C-, HOOC-, H2N-CO- or (alkyl)2N-CO- by decarboxylation preceded where necessary by hydrolysis); (d) catalytic hydrogenation of b -(6-isobutylpyridyl - 2)-b -(p-bromophenyl)-propionitrile in the presence of dimethylamine or diethylamine; (e) condensation of an acetal of o -(p-bromophenyl)-o -(6 - isobutylpyridyl-2)-propionaldehyde with dimethyl- or diethyl-formamide; (f) condensation of a g -(6-isobutylpyridyl-2)-g -(p-bromophenyl)-propyl halide with dimethylamine or diethylamine; or (g) alkylating the corresponding primary or secondary aminopropanes. a -(6 - Isobutylpyridyl-2)-a -(b 1-dimethylaminoethyl) -p-bromophenylacetic acid dimethylamide is prepared by condensing a -(6-isobutylpyridyl-2)-p-bromophenylacetic acid dimethylamide with b -dimethylaminoethyl chloride.  o  - (p - Bromophenyl)-o -(6-isobutylpyridyl-2)-propionaldehyde acetal is prepared by condensing 2 - (p-bromobenzyl)-6-isobutylpyridine with bromacetal.
Patent GB-727189-A (GB)
Title: Improvements in packaging mechanism
IPC: B65B23/14
Filed: 1953-01-26
Abstract: 727,189. Endless-chain conveyers. FORGROVE MACHINERY CO., Ltd., HOPTON, A., and RUSSELL, A. Dec. 3, 1953 [Jan. 26, 1953], No. 2169/53. Class 78 (1). In packaging - machines stacks of loose biscuits are carried in the pockets of an intermittently moved endless conveyer to a transfer station where they are engaged by verticallymoving grippers and lowered into open-topped trays or cartons for assembly prior to wrapping. The stacks 10, Fig. 1, of biscuits, are fed by a conveyer 11, which is similar to the conveyer described in Specification 684,254, over a table 17 and plates 36, 37 to the transfer station A. The plates are slidably mounted in guides and are reciprocated by cam - actuated mechanism to come together to support the biscuits at the station and to move apart to allow the biscuits to be moved downwards into a tray supported on a platform 52 after they have been engaged by grippers 58. The trays 18 are fed by a continuously-moving endlessbelt conveyer 20 against a stop 19 and the foremost tray is pushed transversely of the belt on to a table 23 by a reciprocating pusher 24. The trays are pushed along the table by fingers 32 on an intermittentlymoving endless chain 33 until the foremost rests on the vertically movable plate 52. The side walls 22 of each tray are spread apart by fingers 35 during its passage to the plate. The plate moves upwards to meet the descending biscuits and during this movement the sides of the tray are spread by blades 54. When the biscuits meet the tray, the downward movement of the grippers ceases and they are moved apart to release the biscuits. The grippers then return to their initial position. A reciprocating presser 78 faced with rubber 79 maintains pressure on the top of the stack during lowering. When the plate 52 returns to the plane of the table 23, the tray is engaged by the fingers 32 and is pushed into the path of a pusher 87 which transfers it to the. belt 20 leading to the wrapping mechanism. Specification 699,474 also is referred to.
Patent GB-1060553-A (GB)
Title: Actuator cap for spray dispensers
Inventor: SAGARIN PHILIP HAROLD
IPC: B65D83/16
Filed: 1966-01-17
Abstract: 1,060,553. Dispensing liquids by gaseous pressure. VALVE CORPORATION OF AMERICA. Jan. 17, 1966, No. 2172/66. Heading F1R. A cap and actuator button assembly for a pressurized dispensing container has a top wall portion 78 defining a recess which permits finger access to the actuator button 74, but prevents accidental depression of the button during shipment. As shown, the cap and button are moulded in one piece and have a snap-on fit with the top of the container 10a. Button 74 is hinged at 72. In another embodiment, Fig. 6 (not shown), the button is separate and slidable within the cap. The top wall of the cap may be flat, as shown, or domed, Fig. 10 (not shown). The assembly may be of plastics.
Patent GB-418652-A (GB)
Title: Method and device for insulating electrical conductors
IPC: H01B9/06
Filed: 1933-01-24
Abstract: 418,652. Cables. SOC.INDUSTRIELLE DES TELEPHONES, 25, Rue du 4-Septembre, Paris. Jan. 24, 1933, No. 2301. Void [Abridged as open to inspection under Sect. 91 of the Acts, July 31, 1933]. [Class 36.] Conductors are supported within a metal conduit which is filled with gas, such as nitrogen or carbon dioxide, under pressure. The bare conductor 1 may be supported by cylindrical insulators 3, perforated for the passage of the gas, and metallized where they touch the conductor or conduit. Metal sheets may be embedded in the insulators and their ends so formed as to produce a uniform voltage gradient. To facilitate drawing the conductor 1 through the insulators 3, tubes 9 may be provided as shown in Fig. 4. Fig. 6 shows a modification in which the separate insulators are replaced by a helical strip 10 of insulating material and the sheath consists of a lead tube 11 reinforced by a strip of iron &c. wound on. Devices may be provided to break the circuit on the escape of gas.
Patent GB-828189-A (GB)
Title: Improvements in or relating to dispenser cathodes
IPC: H01J9/04
Filed: 1958-01-23
Abstract: 828,189. Cathode materials and processing. PHILIPS ELECTRICAL INDUSTRIES Ltd. Jan. 23, 1958 [Jan. 26, 1957], No. 2317/58. Class 39(1). In a dispenser cathode containing an emissive mix ture of barium aluminate and powdered tungsten stored in a supply chamber behind a wall of porous tungsten, the cathode is heated after closure of the supply chamber to 1900K-2200K in a hydro gen atmosphere for about a minute, after which it is rapidly cooled. The aluminate is made from barium and aluminium oxides, with possibly calcium oxide in addition. After adding the tungsten powder, the mixture is pressed into tablets and fired. As shown in the Fig. the tablets 7 are placed in molybdenum containers 4, and the porous closure members 6 welded in position. The cathodes are then placed in a crucible 3, which is heated by induction inside a quartz tube through which hydrogen is passed. In the vertical position shown, absorption of the aluminate into the porous member by direct contact is avoided. In Fig. 2 (not shown), the same process is applied to a cylindrical cathode, the heating in this case being by passage of a current. The process of the invention is stated to reduce both the activation time, and the evaporation of barium.