baber/WOPTO huggingface dataset:
Patent GB-309846-A (GB)
Title: Improvements in thermionic valve circuits
IPC: H03F1/54
Filed: 1928-01-16
Abstract: 309,846. Pollock, A. F., and Pollock, D. A. Jan. 16, 1928. Thermionic amplifiers, detectors, generators, and modulating systems.-In a thermionic valve circuit the potential difference between the filament and another electrode of a valve a is varied by connecting the other electrode to a point of the filament heating-current source b and inversely varying the resistance c<1>, c<2>, of each filament lead to the filament battery. In the usual circuits in which the input is applied to the grid, the grid is connected to, and biassed by, the filament battery (Fig. 1, not shown). As shown the input is applied to the plate, as described in Specification 272,797, and the plate is connected to a point of the filament battery. Reaction is obtained by coupling a coil i in the grid circuit to one of two chokes g<1>, g<2>, in the filament circuit. In a transmitter, a microphone j is connected in the plate circuit.
Patent GB-283893-A (GB)
Title: Improvements in or relating to Luminous Reproductions of Circuits
IPC: H02B15/00
Filed: 1928-01-16
Abstract: 283,893. Siemens & Halske Akt.- Ges. Jan. 19, 1927, [Convention date]. Indicating, optical devices for.-In luminous representations of circuits such as those used in electric power distributing stations for facilitating control from a central point, the illuminated members are formed to project beyond the front surface of the base plate, so that they are visible readily both from the front and from a considerable angle on either side. Fig. 2 is an example showing a luminous strip or member 1 with a broadened base, projecting from the corner of a base plate 2 so that it is visible through a total angle of 270 degrees. The visible surface of the strips may be divided into parts of different shape, colour, or luminosity, for example parts of the surface may be smooth, while other parts are rough or matt, or the projecting part may have hexagonal facets. The difference in appearance of the parts of the strips may be utilized to convey information as, for example, the position of various wires in the circuits. The differently coloured strips can be separated by thin opaque partitions, or they may be mounted on a rotatable drum, part of the periphery of which projects through a base-plate, so that when the drum is rotated the different strips become visible in turn. This rotation of the drum may be used for signalling purposes. Where parts of the apparatus are movable by hand to indicate the state of the plant for example the turning of an illuminated representation of a switch to the " on " or " off " positions, the luminous projecting member may be formed as an operating-handle.
Patent GB-1219742-A (GB)
Title: Method of producing halosiloxanes
Inventor: ROSSMY GERD
IPC: C07F7/12
Filed: 1969-01-13
Abstract: 1,219,742. Halosiloxanes. TH. GOLDSCHMIDT A.G. 13 Jan., 1969 [16 Jan., 1968], No. 1490/69. Heading C3S. Halosiloxanes of the formula where R is H or alkyl or aryl, X is halogen, a is 0 or 1, b is 1, 2 or 3 and a+b is 2 or 3, are prepared by adding dropwise b moles of a tertiary aliphatic alcohol to a mixture of 1 mole of a silane RaSiX 4-a  and from 2b to 5b moles of a silane (CH 3 ) 3 SiY, where Y is halogen, at a temperature of from - 40 to 250 C., preferably below 40 C. The process is preferably effected in the presence of a hydrogen halide passed through the reaction mixture. The starting silanes should be pure, particularly free from iron salts. The preferred alcohol is tert.-butanol, others are specified within the C 1-8  range. The products may be converted to the corresponding hydroxy-siloxanes by hydrolysis in the presence of an acid acceptor. They may also be condensed with hydroxy-siloxanes to provide, for example, bis - (trimethylsiloxy) end - blocked siloxanes. The examples describe the preparation of 1,1,1,3,5,5 - heptamethyl - 3 - chlorotrisiloxane; 1,1,1,5,5,5 - hexamethyl - 3 - propyl-3- chlorotrisiloxane; 1,1,1,5,5,5 - hexamethyl-3,3- dichlorotrisiloxane; 1,1,1,5,5,5 - hexamethyl-3- phenyl - 3 - bromotrisiloxane; 1,1,1,5,5,5 - hexamethyl - 3 - octadecyl - 3 - chlorotrisiloxane and 1,1,1,3 - tetramethyl - 3,3 - dichlorodisiloxane.
Patent GB-370073-A (GB)
Title: Improved method of weaving patterned pile fabrics
IPC: D03D39/00
Filed: 1931-01-16
Abstract: 370,073. Weaving fabrics having printed pile warps. FROMUTH, A. G., Kinsey Street, Frankford, Philadelphia, U.S.A. Jan. 16, 1931, No. 1534. [Classes 142 (ii) and 142 (iv).] To avoid using large printing drums in preparing the particoloured pile warps of pile fabrics, one group of warp threads 14 is printed with several pattern lengths separated from each other by blank intervals, each pattern length being particoloured according to the pattern of one part, say A, B, Fig. 1, of the length of the finished carpet, and then printing on another series of warp threads 15, a series of pattern lengths and blanks, each pattern length corresponding to the pattern in the next adjacent part, say B, C, of the fabric and weaving pattern lengths first from one group 14 and then from the other group 15. The blank intervals may be printed with index marks, which are aligned in the beaming operation. When weaving from the warp threads 14 the warp threads 15 are held out of action in a clamp 17. A pattern length having been woven from these threads 14, the heald controlling them is raised to inactive position, whilst the heald controlling the threads 15 is brought into active position, the clamp 17 is laid on the fabric and the threads 15 are secured in the fell of the fabric by a few picks. The threads 15 are then cut and the threads 14 are inserted in the freed clamp, which is then moved again to the position. Weaving then proceeds with the threads 14 until a rug is completed, after which weaving proceeds with the threads 15 and so on until the required number of rugs has been woven. The blank intervals on the printed pile threads provide scope for anchoring the pile threads &c. without affecting the continuity of the pattern. Where as in the example shown in Fig. 1, the pattern is symmetrical, the warp threads 14, 15 may be similarly printed, the warp threads 14 being wound on one beam and the warp threads 15 on another beam, but in a reverse manner.
Patent GB-837161-A (GB)
Title: Improvements relating to bobbin winding machines
IPC: B65H67/04
Filed: 1958-01-16
Abstract: 837,161. Winding bobbins. ROSENKRANZ, C. G., HALSTENBACH, H., and PLUTTE, A., [trading as HALSTENBACH & CO. OHG.]. Jan. 16, 1958 [Jan. 21, 1957], No. 1580/58. Class 120(2) In an automatic bobbin winding machine having a thread guide which is movably mounted on a reciprocatable driving rod and is coupled to the driving rod during winding and is disengaged there from when the winding is completed, means are provided for holding the thread guide stationary during several revolutions of the bobbin immediately before the beginning of the winding process in order to secure the "end" to the bobbin. In the embodiment shown the bobbin 1 is rotated by the driving head 2. The end 3 of the thread is clamped between the end face of the bobbin 1 and the driving head 2 and the thread is guided by the wire 4 of the thread guide 5. The guide 5 is movable on the rod 6 which can be reciprocated and carries a connecting member 8 with which a pawl 9 on the guide engages during the normal winding process so that the guide 5 reciprocates with the rod 6. At the end of winding a pawl 15 holds the guide 5 out of engagement with the member 8. Immediately after bobbin changing is completed a lever 10 controlled by the bobbin changing mechanism is swung in the direction indicated by the arrow whereby, through the lever 13 and shaft 12, the pawl 15 makes a corresponding swinging movement thus releasing the guide 5 from the nose 16. The swinging movement of the pawl 15 is delayed by a cam member 14 on the lever 10 so that the nose 17 engages the pin 9<SP>1</SP> on the pawl 9 during the forward movement of the guide and holds the guide in a winding-on position shown in Fig. 2 for the duration of several turns of the bobbin. After a few turns have been wound on the bobbin further swinging movement of the lever 10 swings the pawl 15 up until the nose 17 is completely disengaged from the pin 9<SP>1</SP> thus releasing the guide 5. The guide 5 then slides under the action of spring 7 along the rod 6 until the pawl 9 engages the member 8 whereby the guide 5 is coupled to the rod 6 and the actual winding process begins. In a second embodiment instead of the pawl 15 having two noses it is made in two parts relatively slidable.
Patent GB-192081-A (GB)
Title: A mode of and apparatus for unwinding cinematograph films or the like
IPC: G03B21/32
Filed: 1923-01-17
Abstract: 192,081. BalliÞre, G. P. Jan. 19, 1922, [Convention date]. Feeding and winding webs.-A kinematograph or like film or a tape is unwound from the inside of a roll mounted on a support to which rotation is imparted. The support may be a circular horizontal plate 4, upon which the roll 5 is centrally secured by stops 6 adjusted by screws 7. The plate 4 is driven frictionally by a roller 8 slidabdy mounted on a shaft 9, and the roller is moved along the shaft to regulate the rate of rotation either automatically or by operation of a lever 13 connected to the roller by a link 10.
Patent GB-882502-A (GB)
Title: Improvements relating to trailers
IPC: B60P1/02
Filed: 1958-01-16
Abstract: 882,502. Semi-trailers. FRANCOIS, G. Jan. 16, 1958 [Jan. 17, 1957], No. 1616/58. Class 108(1). A semi-trailer body has pivoted to it at 2 a towing arm 3, and at 22 arms 21 carrying road wheels 20, the arms being interconnected by tie rods 8 and 23 to levers 10 pivoted at 11 to the body. Rotation of the levers 10 by the jack 14 raises the semitrailer from the ground to a loading position as shown or to an intermediate towing position where it is held by the strut 27 engaging the ratchet teeth 28. The connection between the tie rod 8 and the link 10 preferably includes a spring-loaded lost motion connection. Specification 751,460 is referred to.
Patent GB-853934-A (GB)
Title: Improvements in or relating to casts and moulds
IPC: B29C39/00
Filed: 1959-01-16
Abstract: A synthetic resin moulding mixture is hardened by polymerization, polyaddition or polycondensation in contact with a moulding surface and a gas is released into the resin mass during hardening to prevent shrinkage; the density of the resultant resin being substantially unaffected by the gas.  The mixture preferably comprises a polymerizable liquid monomer and a macromolecular compound which is dissolved in the monomer or is soluble or swellable therein.  In one example 70 gms. of pearly polymethylmethacrylate, 15 gms. of kaolin, 15 gms. of a copolymer derived from methyl methacrylate and methacrylic acid, 0,3 gms. of sodium bicarbonate and 0,1 gms. of benzoyl peroxide are stirred with 40 gms. of methyl methacrylate, 10 gms. butyl methacrylate, 18 gms. water, 2 gms. of sodium oleate, and 0,25 gms. dimethylaniline, and 120 gms. of polyethylene granules are added to the resultant mixture as a filler.  The gas may alternatively be produced by the decomposition of an azo compound in the moulding mixture.ALSO:A synthetic resin mixture is cast in a mould or moulded on a former and a gas is introduced into the resin mass during hardening to prevent shrinkage; the density of the resulting resin being substantially unchanged.  The casting composition which is hardened by polymerisation, polyaddition or polycondensation comprises in one instance a polymerisable liquid monomer such as methyl methacrylate or vinylacetate and a macromolecular compound such as polymethylmethacrylate which is dissolved in the monomer or is soluble or swellable therein.  In one example a hollow mould is filled with a mixture comprising polymethylmethacrylate, methyl methacrylate, sodium bicarbonate and an acid to liberate carbon dioxide, and fillers &c. such as polyethylene.  The polymerisation is completed in twenty minutes and the shrinkage is stated to be only 0-1%.  Polyvinyl chloride or polystyrene may be used as macromolecular substance and styrene or a nitrile of acrylic or methacrylic acid may be used as the liquid monomer. The gas may be produced by the decomposition of an azo compound in the moulding mixture.
Patent GB-410910-A (GB)
Title: Improvements relating to the electrical production of music
IPC: G10H5/10
Filed: 1933-01-18
Abstract: 410,910. Valve generating circuits. ALLGEMEINE ELEKTRICITATS-GES., 2, Friedrich Karl-Ufer, Berlin. Jan. 18, 1933, No. 1723. Convention date, Jan. 18, 1932. [Class 40 (v).] In electrical musical instruments operating by relaxation oscillations, in order to avoid the use of a neon tube, an arrangement of which employing also a grid-controlled hot cathode tube and Formant circuits is described with reference to Fig. 1 (not shown), a grid-controlled hot cathode tube which is gas-filled is alone used. The argon-filled tube Th, Fig. 2, preferably has its cathode K indirectly heated and is connected as shown through a condenser C and parallel discharge resistance Wc to coils S1, S2 coupled to Formant circuits F1, F2, an amplifier V, and a loud-speaker D. The condenser C charges until the tube Th extinguishes, and then discharges through the resistance Wc until the tube again ignites, the process then repeating. Frequency is varied by varying the bias of the grid G by a keyboard potentiometer M. The relaxation voltage increases at low frequencies, improving the low notes in the loud-speaker.
Patent GB-278933-A (GB)
Title: Improvements in vector computing apparatus for aerial navigation and like purposes
IPC: G01C21/20
Filed: 1927-01-21
Abstract: 278,933. Goldschmidt, G. P. Nov. 20, 1926, [Convention date]. No Patent granted (Sealing fee not paid). Plane trigonometry calculators.-The vector triangle of wind, ground, and air speeds, or equivalents, concerned in problems of longdistance navigation is solved by means of ruled and divided transparent protractors &c. movable upon a marked baseboard. In the form illustrated, there are two protractors 7, 8 longitudinally slidable upon a base plate 6 ruled to represent the course and various drift angles. The protractors are similarly marked with radiating lines and concentric arcs and can be clamped in position by screws 4, 5. Adapted to move transversely and above the protractors is a slide 9 bearing converging lines and surmounted by a cursor 12 having a line graduated in terms of air speeds to enable the speed of the wind to be determined for various speeds of the craft.
Patent GB-874598-A (GB)
Title: Improvements in tower gas purifier tray seals
Inventor: GARRETT WILLIAM ROBERT
IPC: C10K1/22
Filed: 1958-01-21
Abstract: 874,598. Purifying gases. NORTHERN GAS BOARD, and GARRETT, W. R. April 20, 1959 [Jan. 21, 1958], No. 2056/58. Class 55 (2). In the removal of hydrogen sulphide from crude coal gas by passage of the gas through a tower containing trays of iron oxide, each tray is formed with, or constructed to receive, a central tube section extending upwardly from its bottom, and has, depending from its bottom, an annular dip skirt of greater diameter than and substantially coaxial with the tube section or the intended location thereof. In the drawing crude gas enters tower 1 through inlet 12 and passes, through apertures 11 in the interval peripheral wall 10, into a series of trays 5. Each tray has an imperforate base plate 8, a perforated plate 9 for carrying iron oxide, an upwardly extending central tube section 15 and a downwardly extending annular dip skirt 16. The gas duct formed by the tube sections 15 is closed at its top by a weighted cup 22 which also has an annular dip skirt 16b. The length of each skirt is preferably such as to penetrate to approximately half the depth of the oxide in the tray below. The dip skirt 16a of the lowermost tray extends into a water seal situated in an annular channel 18. A downward extension of the outer wall of channel 18 has a plurality of apertures through which the purified gas passes to outlet 4. Specification 874,599 is referred to.
Patent GB-511831-A (GB)
Title: Improvements in or relating to rotary shears for cutting moving metal strips
IPC: B23D25/12
Filed: 1939-01-20
Abstract: 511,831. Shearing. KRUPP GRUSONWERK AKT.-GES., F. Jan. 20, 1939, No. 2060. Convention date, Feb. 7, 1938. [Class 83 (iv] In a machine for shearing moving strip material, blades 5, 6 are rotated from an electromotor 25 arranged above an electromagnetic clutch 19. When one side. 18 of the clutch is energized the motor drives the blades through pulle s 27, 17 and a shaft 9. The drive is disconnected and a brake applied when element 22 of the clutch is energized.
Patent GB-914501-A (GB)
Title: Improvements in and relating to the operation of skip shutters in guided skip hoists
IPC: B66B17/08
Filed: 1961-01-18
Abstract: 914,501. Skip shutter operation in skip hoists. GUTEHOFFNUNGSHUTTE STERKRADE A.G. Jan. 18, 1961 [March 12, 1960; March 26, 1960], No. 2064/61. Class 78 (4). The vertically slidable outlet shutter 3 of the skip 2 of a guided skip hoist is operated by a device consisting of a slide-engaging arm 6, one end of which is pivoted at 7 to a verticallyguided carriage 8, the arm being driven by means pivotally connected to it at a point 10 intermediate its carriage-coupled end 7 and its free shutter-engaging end. The driving means shown is a pressure cylinder 12 pivoted to a fixed bracket at 13 and with its reciprocable piston 11 connected to the arm-driving point 10. At the bottom of the shutter-closing down stroke of the piston, the arm 6 turns about pivot 7 away from the skip to allow it to be moved. The skip may include a catch 19 guided by a surface 20 to ensure positive drive of the shutter in the downward direction. The arm 6 may also, as shown, drive the inlet door 14 of a receptacle 16 and, by means of an abutment 17, may ensure the complete closure of door 14 when it swings about pivot 7 to its position of release from the skip outlet shutter 3. In Fig. 3 (not shown) the door 14 is not slidable as shown but hinged, and is operated by linkages connected to the arm 6.
Patent GB-1140782-A (GB)
Title: Adjustable synchronization gears for serpentine slitting machine
IPC: B23D19/00
Filed: 1967-01-16
Abstract: 1,140,782. Toothed gearing; coupling rotary elements. BENDIX CORP. 16 Jan., 1967 [27 Jan., 1966], No. 2216/67. Headings F2Q and F2U. [Also in Division B3] o eliminate backlash between intermeshed gears 32, 34 for synchronizing the rotation of two spaced apart parallel rotatable members 22, 24, e.g. the arbors of a metal cutting machine, each gear comprises a portion 60 having a ring of teeth 72 and a hub 64 keyed to a respective arbor, and a portion 62 coaxially mounted on the hub 64 and having a ring of teeth 74 corresponding to the teeth 72 to form therewith a set of two-part gear teeth, the portions 62 being angularly adjustable relative to the portions 60 to vary the effective thickness of the twopart teeth. The teeth 72 of one gear mesh the teeth 74 of the other, and vice versa. Portions 78, 80 of diametrically opposite flats on the hubs 66 of portions 62 are separated by ribs 82 in which are threaded adjustment screws 84 which abut blocks 88 bolted to the portions 60. Angular adjustment is by loosening one screw 84 and tightening the other. If the arbors 22, 24 are moved apart, half the resultant backlash is taken up by adjustment of each gear, to maintain synchronization of the arbors.
Patent GB-576743-A (GB)
Title: Improvements in or relating to boxes, containers or crates
IPC: B65D45/16
Filed: 1944-02-07
Abstract: 576,743. Boxes, crates &c. FIDDES, J. Feb. 7, 1944, Nos. 2230 and 22624. [Class 18] [Also in Group XXV] A box, container or crate, e.g., of wood, is provided with one or more oppositely located slots 6, the lid having corresponding hooks 4 slidably engaging the slots, and held on the inside or outside of the lid by battens 18. A tail 20 prevents detachment of the hook and resilient pressure to steady its movement is provided by a coiled metal spring or rubber tubing 24. A hole is provided in the hook to take a nail 11 which secures the fitting in engaged position.
Patent GB-900336-A (GB)
Title: Improvements in and/or relating to oil burners
IPC: F23K5/02
Filed: 1961-01-19
Abstract: 900,336. Supplying liquid fuel to burners. NORDISKA ARMATURFABRIKERNA A.B. Jan. 19, 1961 [Jan. 22, 1960], No. 2264/61. Class 75 (1). A fuel supply system for a rotary burner comprises a fuel receptacle 16 which fills with fuel when an electromagnetic shut-off valve 9 in the supply pipe 10 to the burner is closed. When the burner is again started by opening the shutoff valve 9 the fuel in the receptacle flows along a pipe 15 to supplement for a time the normal flow of fuel to the burner from a float chamber 7 through a regulating valve 13 controlling the inlet end of a fuel conduit 8 connecting the float chamber to the shut-off valve 9. A float valve maintains the fuel in the float chamber 7 at the level 12 and during operation of the burner the fuel is maintained at a level 14 in the conduit 8 and the pipe 15 by the position of the outlet end of the supply pipe 10 and the setting of the regulating valve 13. The rate of flow from the receptacle 16 at starting is controlled by a pin 18 secured to a cover 17 and entering the inlet to the pipe 15. Specification 830,599 is referred to.
Patent GB-1209347-A (GB)
Title: Method of electroless plating
Inventor: SKOLL MERCELINE L
IPC: C23C18/31
Filed: 1968-01-16
Abstract: 1,209,347. Electroless plating. TRANSMETALS CORP. Jan. 16, 1968 No. 2420/68. Heading C7F. An electroless bath contains a water soluble metal salt, an acid and a carbohydrate in a concentration of at least 50 g/l. The plating metal may be Al, Cd, Co, Cu, Pb, Ag, Au, Sn, Zn, Mg, Li, Mn, Sr, and Ni, and the salt may be a nitrate, sulphate, chloride or gluconate. The substrate may be steel, Ni, Sn, Cu, brass, Al, Zn, Pb, Au, Be, Ti, Pt, ceramic or plastics, e.g. polyester or polystyrene. When plating Be with Ag, a coating of Cu may be applied first. The acid may be acetic, citric, tartaric, lactic, gluconic, formic, maleic, oxalic, adipic, sebacic, palmitic, stearic, lauric, carbolic, salicylic, boric, phosphoric, sulphuric, hydrochloric or nitric. The carbohydrate may be glycerose, dextrose, xylose, ribose, glucose, mannose, galactose, fructose, lactose, maltose, sucrose, dextrin, inulin, starches or cellulose esters, e.g. acetate. The bath may also contain phytol or guanylic acid. A sensitizing bath containing gluconic acid, a carbohydrate and a wetting agent e.g. ammonium alkyl sulphate, sodium alkyl aryl sulphate or amine salts of dodecyl benzine sulphinic and phosphinic acids may be used.
Patent GB-1408465-A (GB)
Title: Acrylic synthetic paper and method for producing the same
IPC: C02F5/10
Filed: 1973-01-17
Abstract: 1408465 Hydrolysed acrylonitrile polymer blends and fibres ASAHI KASEI KOGYO KK 17 Jan 1973 [18 Jan 1972 27 July 1972] 2461/73 Heading C3P [Also in Divisions B5 and D2] An acrylic polymer is formed by hydrolysis of a solution of an acrylic polymer (containing at least 30% by weight acrylonitrile) in nitric acid of 55 to 85% by weight at 0‹ to 70‹ C. In examples the initial acrylic polymer is homopolyacrylonitrile or acrylonitrile copolymerized with N,N-dimethyl acrylamide, acrylic acid, acrylamide and methoxy polyethylene glycol acrylate. Preferably the initial polymer is obtained by solution polymerization in nitric acid solution. The resultant polymer is blended with another acrylic polymer and wet-spun into fibres which are then used for making paper (see Divisions B5 and D2).