baber/WOPTO huggingface dataset:
Patent GB-704777-A (GB)
Title: Improvements in apparatus for the reception of television
Inventor: PARKINSON WILLIAM REDSHAW
IPC: H04N3/185
Filed: 1951-02-21
Abstract: 704,777. Television. RADIO GRAMOPHONE DEVELOPMENT CO., Ltd. Feb. 20, 1952 [Feb. 21, 1951], No. 4228/51. Class 40 (3). [Also in Groups XXXV and XXXVI] In order to maintain constant focusing of the cathode-ray beam in a television receiver provided with a focusing coil in series with the H.T, supply to a sound amplifying valve and with an E.H.T. supply having a drooping voltage-current characteristic, the bias on the valve is controlled directly or indirectly by the E.H.T. so that the focusing current varies in correspondence with the E.H.T. As shown the focusing coil 5 is in the H.T. lead to the receiver valves, the audio output valve V3 taking about 50 per cent of the current, and the E.H.T. source comprises an oscillator 11, driver valve 12, transformer 13 and voltage multiplier 14, valve V12 being biased by a negative potential applied to its grid obtained by rectifying the output from a winding 16 on transformer 13 in the diode portion 17, 18 of V11 so that as the E.H.T. falls an increased positive potential is developed across the cathode resistor 22 of V12 which is applied via a choke 24 to the cathode bias network 8, 9 of V3 to decrease the current through that valve. The focus coil 5 is shunted by a variable focus-control resistor 6 in series with a resistor 7 whose resistance increases with temperature to compensate for the increase in resistance of coil 5 as it warms up on switching on the set.
Patent GB-263339-A (GB)
Title: Improvements in folding bedsteads
IPC: A47C19/12
Filed: 1925-12-07
Abstract: 263,339. Dodard, A. C. Dec. 7, 1925. Folding bedsteads.-The sidebars of a folding bedstead are in three sections, the middle section b being short and having a rounded top u and supporting leg r. The end sections are hinged to projections d on the ends of the bedstead, supporting legs n being provided beneath these projections. Specification 255,573, [Class 52 (i), Furniture, Fittings &c. for], is referred to.
Patent GB-1136017-A (GB)
Title: Polymerisation of cyclic sulphides
Inventor: HUMPHRIES JOHN FRANK
IPC: C08G75/08
Filed: 1966-01-31
Abstract: 1,136,017. Polymerization of cyclic sulphides. BRITISH INDUSTRIAL PLASTICS Ltd. 28 April, 1967 [31 Jan., 1966], No. 4272/66. Heading C3R. Rubbery polymers of cyclic sulphides are obtained using (a) antimony pentafluoride, (b) arsenic pentafluoride, or (c) a complex of (a) or (b) as a catalyst. Typical cyclic sulphides, chiefly where sulphur is in a 3-membered ring, are ethylene sulphide, propylene sulphide and styrene sulphide. These can be homopolymerized, or copolymerized with each other or with (CH 2 S) n  wheren is 3 or more; with epoxides; or with cyclic compounds, preferably in 5- membered rings, having two sulphur or oxygen atoms or one oxygen and one sulphur atom in non-adjacent positions. The complexes of the catalysts are preferably ionic or co-ordinate and examples of organic compounds which contain an O or S donor atom are alcohols; phenols; acids; ethers; acid anhydrides; ketones; esters; aldehydes; dialkyl sulphides and mercaptans. Other examples of ionic complexes suitable as catalysts include salts containing the MF 6 - anion where M=Sb or As, e.g. with carbonium; carboxonium; oxonium; hydroxonium; aryl diazonium, nitrosyl and nitryl cations. In addition, complexes based on the MF 6 X- anion, where M = Sb or As and X= OH or Cl, are suitable as catalysts. Examples given are triphenyl methyl hexafluoroantimonate, triethyloxonium hexafluoroantimonate and triphenyl methyl hexafluoroarsenate. The process is best carried out under anhydrous conditions under an inert atmosphere of nitrogen or carbon dioxide. Polymerization may be in bulk or preferably in solution. Examples of inert solvents are methylene chloride, cyclohexane and nitropropane or nitrobenzene. The catalyst is usually added in solution, but not necessarily in the same solvent as for the monomers. Purification of the polymers is described. Use: sealant.
Patent GB-590739-A (GB)
Title: Improvements in and relating to rolling mills for rolling strip or wire material
IPC: B21C47/00
Filed: 1945-02-21
Abstract: 590,739. Electric control systems. ALLMANNA SVENSKA ELEKTRISKA AKTIEBOLAGET. Feb. 21, 1945, No. 4346. Convention date,. March 20, 1944. [Class 40 (i)] [Also in. Group XXXV] Tension. To keep a constant pull in a strip passing through a rolling mill, a coiling or uncoiling reel therefor is driven or braked by a driving aggregate supported, at least in part, on the shaft of the reel and the reactive torque is translated into an electrical magnitude used to regulate the driving aggregate. In the Figures the aggregate comprising the driving motor 4 and gearing 3 for reel 2 can rock about the reel shaft under the action of the reactive torque, and against the force of spring 22, to move potentiometer 12. Alternatively the motor 4 could be fixed and the gearing alone rock about the shaft. A piezo-electric crystal or pressure-responsive resistance could replace the potentiometer. In Fig. 1, armature 4 of the driving motor is fed by constant-voltage. D.C. generator 5; field winding 7 is fed by generator 5 in series with generator 8 having a self-excited field winding 9 and mutually opposing field windings 10 and 11. Winding 10 is adjustably supplied by potentiometer 6 connected across generator 5. Winding 11 is controlled by potentiometer 12 and by resistance 13 varied by arm 15 carrying roller 16 bearing on the coil on reel 2. Thus the ratio of the torque of motor 4 to the diameter of the coil is kept constant. In Fig. 2 generator 5 supplies armature 4 and also armature 23 of the mill-driving motor.. Potentiometer 12 controls the field winding of motor 17 of which the speed accordingly varies inversely as the torque on the reel, and which drives generator 18 supplying field winding 11. The field winding 7 is in series with field winding 19 on generator 18 and is supplied from a constant voltage source in series with generator 8 which keeps the ratio of the current in winding 7 to the torque on the reel constant and hence keeps the pull in the strip constant.
Patent GB-290718-A (GB)
Title: Improvements in or relating to machines for distributing manure, seed and the like
IPC: A01C15/16
Filed: 1927-02-16
Abstract: 290,718. Dunn, W. Feb. 16, 1927. Manure, seed, and like distributers. - In a machine for distributing seeds, manure, &c. the material is received from a hopper and discharged by a wheel mounted on a rotary shaft and provided with transverse peripheral grooves forming compartments adapted to move past the outlet from the hopper, the compartments at one end being closed by a member having projections of similar cross-section to the grooves, and screw and nut mechanism being provided to move the shaft axially to vary the capacity of the compartments. The projections extend from the inner periphery of a ring 4 rotatably but not slidably mounted in a casing 1 provided with a feed hopper 2 and an outlet 3. The outer ends of the grooves 7 in the wheel 6 are closed by a flanged plate 8 fixed on the shaft 11 carrying the wheel 6. The shaft 11 is driven by a sprocket wheel 13 and is adjustable axially through the sprocket wheel 13 and a bearing 12 by means of a spring 16 and a nut 15 screwed on its end. The ring 4 may be arranged to move axially instead of the wheel 6.
Patent GB-444470-A (GB)
Title: Improvements in or relating to vehicle heating or ventilating devices
IPC: B60H1/24
Filed: 1934-09-20
Abstract: 444,470. Ventilating vehicles. CLAYTON DEWANDRE CO., Ltd., WILLETT, S. E., and BLOMELEY, H., Titanic Works, Lincoln. Sept. 20, 1934, No. 4401/36. Divided out of 444,205. [Class 137] Air is drawn through inlets a in the side of a vehicle into a distributing chamber c, which contains a fan and heater h, and from which lead ducts d beneath the floor e of the vehicle either to outlets f beneath the seats g, or to outlets in the side walls of the vehicle.
Patent GB-734706-A (GB)
Title: Improvements relating to solid fuel fires
Inventor: NEWMAN REGINALD JOHN
IPC: F24B1/189
Filed: 1953-02-17
Abstract: 734,706. Fireplaces. NORTH THAMES GAS BOARD. May 17, 1954 [Feb. 17, 1953], No. 4445/53. Class 126. The rear part of the flue opening of a fireplace with a firebrick back 1 and side cheeks is closed by removable refractory blocks 5 resting on ledges formed on the forwardly and upwardly sloping top edges of the side cheeks, and the front part of the flue opening is controlled by a damper 9 pivotally mounted on a frame 6 resting on the ledges. The damper 9 is mounted in slots 7 and a second plate 11 pivotally mounted in slots 8 is swung forwards against the surround 4. The ledges are preferably formed by moulding a recess in the edges of the side cheeks.
Patent GB-160639-A (GB)
Title: Improvements in the manufacture of stuffed and upholstered seats
IPC: A47C7/16
Filed: 1920-02-13
Abstract: 160,639. Cornish, P. Feb. 13, 1920. Spring surfaces.-The stuffed part of a seat is. formed by means of a mould 1 in which the cover material 4 and its backing 6 are shaped by means of a former, moulded felt 7, if used, being then placed upon the backing 6. The stuffing-material 8 is then placed in the lined mould, and the seat frame 9 covered with canvas 10 is placed on the stuffing-material and the cover 4 and backing 6 nailed to the frame 9. The seat may be fitted with helical springs 11, Fig. 7.
Patent GB-1503487-A (GB)
Title: Continuous casting
IPC: B22D11/08
Filed: 1975-01-30
Abstract: 1503487 Continuous casting BRITISH STEEL CORP 30 Jan 1975 [31 Jan 1974] 04498/74 Heading B3F A chill 18, e.g. of cast iron, placed on the inclined end face 12 of a dummy bar head 10 in a mould cavity 11, comprises a plate 19 with at least one throughpassage 22 (two are shown) for metal flow into a broad recess 13 in the head end face 12, with studs 21 for spacing the plate 19 from the face and with a narrow curved tongue 20 engaging in the head recess 13. There are also rectangular and separate cast iron grids 24 placed by two opposite edges of the plate 19 for further chilling. Those at the lower edge have been omitted as shown. The chills 18 and 24 are encast in the strand end and the dummy bar is tilted relative to the strand, after use, to release a hook of solidified metal, with the embedded hooked tongue 20, from the recess 13. Reference has been directed by the Comptroller to Specifccations 1,208,236 and 1,251,875.
Patent GB-473461-A (GB)
Title: Improvements in or relating to containers or cartons for eggs or other fragile articles
IPC: B65D85/32
Filed: 1937-02-15
Abstract: 473,461. Cartons for eggs &c. SCHLYTTER, P. Feb. 15, 1937, No. 4534. [Class 18] A container or package for eggs or other fragile articles is formed from a blank of pasteboard, cardboard or the like, by folding along lines of weakness into tubular form, the blank including the adjacent panels, extending from one and the same corner of the set-up container to the opposite corner thereof, and each having circular apertures which register in the set-up container to receive the eggs, and means being provided to secure the container in closed position. The blank comprises rectangular panels 1-6, the panels 3, 4 being pasted together by a flap 7, and panels 5, 6 folded inside to form a rectangular tube with two apertured sheets 5. 6 extending along one diagonal. The panels 5, 6 in this position are arched to provide firm support for the eggs. Bracing flaps 10 are stamped out at the egg holes 8 and in closed position extend nearly at right-angles to the panels 5, 6, their outer edges 12, 13 resting against the outer walls of the container. To close the container the ends 16 of hooks or tongues 14 cut from the longitudinal wall 1 are engaged in slits 17 in panel 4. The incision 18 into the hook ensures an efficient grip in the slit. The container may be collapsed by swinging out the panels 5, 6 and folding the blank along the lines between panels 2, 3 and panels 5, 6. In a modification, instead of bracing members 10, the panels 5, 6 may be attached by metal clips, staples or stitches along their common edge to the common edge of panels 2, 3. In order to collapse this package folding lines are arranged centrally of panels 5, 6.
Patent GB-548357-A (GB)
Title: An improved arrangement for the reproduction of sound
IPC: G11B7/00
Filed: 1941-04-04
Abstract: 548,357. Gramophone reproducing circuits. KOLB, O. K., and BOSTON, D. W. April 4, 1941, No. 4536. Addition to 473,256, [Group XXXVIII] [Class 40 (iv)] [Also in Group XL] The reproducing arrangements of the parent Specification in which volume expansion is effected under control of an auxiliary track in one or each sprocket hole strip of the film is modified by providing one or more amplifiers in addition to the main amplifier and using the auxiliary track to control the additional amplifying arrangements alone or in conjunction with the main amplifier. The additional arrangements may be capable of large output and brought in automatically to deal with loud passages. All the amplifiers may serve the same or different loud-speakers, or low frequencies may be fed to the same loudspeakers and high frequencies to separate ones. The additional amplifiers may deal with a restricted frequency range. As shown in Fig. 1, sound currents from cell C and control currents from cell C1 and, if two control tracks are used, from cell C2 are fed to the usual fader F, the sound currents being amplified by head amplifier HA. The currents then pass to a control unit CV which supplies the main and auxiliary amplifiers MA, AA as described with reference to Fig. 3. The control current which comprises modulated sprocket hole frequency (96#) is applied to valve V1 the output of tuned transformer TRI being rectified at R1 and applied over filter FC1 and the secondary of sound transformer TR2 to the grid of valve V2 which supplies the main amplifier MA and is biassed by a tapping from battery B1 over rectifier R2 which limits the control voltage applied to V2 to prevent overloading. The control voltage is also fed over a further smoothing circuit FC2 to valve V3 which receives sound currents from transformer TR4 and is biassed in a manner similar to V2 except that it does not come into operation until V2 is fully loaded. Valve V3 supplies the additional amplifier AA and, to prevent reproduction of valve noise when V3 is quiescent, the output circuit of AA may be completed by a relay RL when V3 is in working condition. In the modification, Figs. 2 and 4 (not shown), in which only the additional amplifier is controlled, the control circuits of the valve feeding the amplifier are similar to those of V2, Fig. 3.
Patent GB-1261961-A (GB)
Title: System for the continuous manufacture of a synthetic resin product
IPC: G05D11/13
Filed: 1969-01-28
Abstract: 1,261,961. Mixing flaring fluids proportionately. UPJOHN CO. 28 Jan., 1969 [30 Jan., 1968], No. 4589/69. Heading B1C. [Also in Divisions B5, G4 and G6] A system for the continuous manufacture of polyurethane foam comprises means for mixing liquid reactants into a substantially homogeneous mixture, means for delivering the mixture to a setting mould, a plurality of separate pumping means for feeding the different reactants to the mixing means, means for deriving a plurality of measurement indications showing the rates of delivery of the different reactants, means for deriving control signals from these indications and control means operative to adjust the rate of delivery of each reactant, or selected ones of the reactants, to the mixing means in response to the control signals to maintain a given foam composition. The reactants are delivered from ten separate tanks 1-6, 21, 22, 108 and 109 either to a line blender 11 or to the mixing nozzle 18. The nozzle delivers the mixture to a continuous moulding machine. For each reactant a pulse train is obtained indicating the rate of flow. For this purpose each pump which is driven by a D.C. motor through a gear-box may be connected to a pulse generator through a variable speed gearing which allows the pulse rate to be adjusted as desired with respect to the flow rate. In another form a wheel with magnetic teeth is provided between the motor and the gear-box. In a further embodiment a flow meter is provided to make a direct measurement, the flow meter having a toothed wheel to provide the corresponding pulses. The signals representing the flow rates of the different reactants are sampled in turn and compared with preset values. The values are expressed as a ratio of the flow of reactant compared with the flow of resin. The system adjusts the signal to the D.C. motor to bring the flow to within a predetermined error margin of the preset value.
Patent GB-1383921-A (GB)
Title: Polyurethane carpet backing and carpet backing adhesive
IPC: D06N7/00
Filed: 1972-02-01
Abstract: 1383921 Laminates TEXTILE RUBBER & CHEMICAL CO Inc 1 Feb 1972 [2 Feb 1971 3 Feb 1971 9 Nov 1971] 4667/72 Heading B5N [Also in Divisions C3 and B2]  A thixotropic mixture of an aromatic diisocyanate, either a polyol having a hydroxyl number of less than 100 and a functionality of at least 2 or a urethane prepolymer formed by incomplete reaction between such polyol and an aromatic diisocyanate, a filler selected from silica, asbestos, calcium carbonate, zinc oxide, feldspar, clay and mixtures thereof, and a polyurethane catalyst, the thixotropic mixture having a viscosity of 30,000-100,000 as measured at 25 C. on spindle number 7 and 10 RPM of a Brookfield RPM viscometer is used to laminate a secondary backing material to a tufted carpet having a primary backing. The secondary backing material may be woven jute, cotton and synthetic fibre backings, woven strips of polyolefin material, sheets of polyolefin material, needled and non-woven backing material. The carpet may be made of natural fibres such as cotton and wool and synthetic fibres such as nylon, polyester and polyolefin. The aromatic diisocyanate may be selected from 2,4-toluene diisocyanate, 2,6-toluene diisocyanate, methane diisocyanate naphthylene, 1,4-diisocyanate, diphenyl methane-4,4<SP>1</SP>-diisocyanate, 3,3<SP>1</SP>- dimethoxy biphenylene diisocyanate, 4,4<SP>1</SP>- diphenylene diisocyanate, and mixtures thereof. The polyol may be selected from polybutylene glycol, polyethylene glycol, 1,2-polydimethylene glycol, polydecamethylene glycol arid mixtures thereof. As shown in Fig. 1, a supply 10 of previously tufted primary jute-backing material 11 in roll form is positioned upon a carpet unroll cradle 12 and fed past a railway sew on station 16 to storage area 18, then fed over rollers 20 to station 22 where the thixotropic mixture of polyurethane reactants is applied to the underside. The coated primary backing material then passes under doctor blade 30, across a tenter section 31 including endless belt 32 and a supply of jute secondary backing is passed from a station 36 to be positioned immediately adjacent the coated primary backing material. Secondary backing and primary backing are then passed through a pair of pion rolls 38, then around a portion of the circumference of three vertically stacked rotating drying drums 40 with the secondary backing positioned immediately adjacent the surface of the drums. The temperature provided by the heating drums 40 may be 70-300 F., the time of heating being 10 seconds-10 minutes.
Patent GB-726770-A (GB)
Title: Pulverising machines
Inventor: MAHLER JOHN HAROLD
IPC: B02C13/22
Filed: 1954-02-18
Abstract: 726,770. Impact pulverizers. HERBERT Ltd., A. Feb. 18, 1954, No. 4749/54. Class 59 In a pulverizing machine of the kind having a generally cylindrical chamber divided into two ,axially-spaced portions by a rotor, the outlet portion of this chamber being provided with at least one set of interacting, axially-overlapping rows of pulverizing pegs, one row of pegs of each set being carried by the rotor and the other row by the stationary wall of that side of the chamber, and the stationary wall having in it an outlet opening through which the pulverized material is discharged, as by means of a fan, the pegs, which are of a ceramic material which is resistant to abrasion, are each mounted through copper or some other material having a ductility comparable to that of copper. In the form shown in Fig. 1, the inner end 20 of a peg 11 is held through the intermediary of a ductile ring 22 by the inturned end 17 of a steel ferrule 16 fitted in a bore of a rotor 12 provided with wear plates 13, 14, and through the intermediary of a ductile ring 23 by a screw 18 screwing into the ferrule 16. In a modification of this form, Fig. 6 (not shown), the inner end of the peg is tapered to coact with a tapered ring of ductile material which coacts with a tapered inner surface of the ferrule. In the form shown in Fig. 3, the peg 11 has a reduced end 32 provided with annular peripheral ridges which is connected by cement 34 of a ductile nature to a cup-like part 33 integral with a screw 35. In another form, Fig. 4 (not shown), the cup-like part has an internal wavy, form. In a further form, Fig. 5, the peg 11 has a bore closed by a plug 45 of the same material as that of the peg and is held against a ferrous base portion 42 by means of a bolt 46 the head of which is held against the peg through a ductile washer 48. A washer 49 between the nut 47 and the base portion 42 may be either of steel or of ductile material. Specifications 621,187 and 726,714 are referred to.
Patent GB-1495645-A (GB)
Title: Expansion dowel
IPC: F16B13/06
Filed: 1975-02-05
Abstract: 1495645 Screw sockets P TOPHOLM 5 Feb 1975 [6 Feb 1974] 4842/75 Heading F2H An expansible screw socket 1 is a one-piece plastics moulding comprising a tubular body with an internally threaded portion 4 at one end and a head flange 6 at the other end, with sharp-edged longitudinal ribs 7 under the head flange 6, a respective longitudinal slot 2 aligned with each rib 7 extending from the rib to the screw-threaded portion 4 to divide the main body of the socket into a set of flexible longitudinal strips 3. The ribs 7 stiffen the socket portion next to the head 6 to prevent it from being axially compressed and radially expanded when the slotted portion is axially compressed and radially expanded by tightening of a screw (5) (Figs. 4-7, not shown) engaging the threaded portion 4, to prevent damage to the wall surface about a hole in which the socket is being secured. Each strip 3 has at least one longitudinal rib 8 on its radially outer surface, and is of generally triangular cross-section. The slots 2 are tapered off at the end adjacent the threaded portion 4.
Patent GB-1220562-A (GB)
Title: Discharge flashlight
IPC: G03B15/05
Filed: 1969-01-29
Abstract: 1,220,562. Photo-electrically controlled flashlamps. FRANKE & HEIDECKE G.m.b.H. [trading as Rollei-Werke Franke & Heidecke] Jan.29, 1969 [Feb. 7, 1968], No.4886/69. Heading G1A. [Also in Division G2] In a discharge flashlamp including a flash tube and a parallel quenching tube the quenching tube is photo-electrically operated only when a pulse is occurring in the firing circuit of the flash tube. A photo-electric integrator 22, 23 switches on transistor 24 at a predetermined integral to transmit a pulse to ignite a flash tube 21 in parallel with the main tube 13. Transistor 17 normally short circuits the line 19, but is turned off for a preset time by a monostable multi-vibrator 15, 16 in response to a pulse derived over capacitor 14 from the ignition transformer 11 of tube 13. In one modification Fig. 2 (not shown) transistor 24 may be omitted. In another, Fig. 3 (not shown) capacitor 14 is connected directly to the storage capacitor 101 and the monostable multi-vibrator is omitted.