baber/WOPTO huggingface dataset:
Patent GB-1225644-A (GB)
IPC: H03H19/00
Filed: 1968-07-03
Abstract: 1,225,644. N-path filters. SIEMENS A.G. 3 July, 1968 [4 July, 1967], No. 31662/68. Heading H3U. An N-path filter comprises at least two parallel keyed low-pass networks connected in cascade, and is provided with negative feedback through a series resistor and an amplifier, the amplification and feedback satisfying the condition where: T 1  = R 12 C 1m  T 2  = R 21 C 2n  R 1  = source impedance at the input R 12  = resistance in the first low-pass network R 21  = resistance in the second low-pass network R 31  = resistance of the feedback resistor N = number of paths in a low-pass network v = voltage gain in the amplifier C 1m  = capacitance of the mth capacitor in the first low-pass network C 2n  = capacitance of the nth capacitor in the second low-pass network m, n = 1,2...N. The two low-pass networks may be directly cascaded, Fig. 1 (not shown), or may be coupled through an amplifier, Fig. 2 (not shown).
Patent GB-1225961-A (GB)
IPC: B65H54/44
Filed: 1966-12-15
Abstract: 1,225,961. Gas turbine plant; regulating turbine plant. JOSEPH LUCAS (INDUSTRIES) Ltd. Feb.19, 1968 [Dec.15, 1966; Jan.26, 1967], Nos.56177/66 and 3941/67. Headings F1G, F1Q. [Also in Divisions F2, F4 and G3] A fuel supply system for a gas turbine, comprises a plurality of burners 31, supplied with fuel via a pilot manifold 33, and a main manifold 32 having valves 36 to maintain the pressure to all the burners constant. Each valve 36 has a closure member 49, loaded to the closed position by a spring 50, to control fuel flow through an inlet 44 and outlet 45 in the line 34, and opened by a piston 48 acted upon by pressure in a passage 37 controlled by a regulating valve 38, connected to a fuel supply 30. The passage 37 is connected at each end with a L.P reservoir via restrictors 40 and 41. A valve 42 can be operated to drain the system when the engine is not running. The pistons 48 are disposed with their axis in a radial direction with respect to the centre line of the engine. The piston 48 can be replaced by a diaphram.
Patent GB-1226665-A (GB)
IPC: A61K35/66
Filed: 1968-05-15
Abstract: 1,226,665. Antibiotic T-2636. TAKEDA YAKUHIN YOGYO K.K. 15 May, 1968 [18 May, 1967; 8 May, 1968], No. 23032/68. Heading C2A. [Also in Division A5] The antibiotic T-2636 and its components A, B, C and D, a pentaene having antibacterial activity, is produced by cultivating Streptomyces rochei var. volubilis, especially strain IFO-12507, in a culture medium containing assimilable sources of carbon and nitrogen under aerobic conditions. The antibiotics may be obtained from the clarified broth or mycelium. The whole broth is adjusted to pH 3 to 8, preferably 5 to 6, filtered with a filter aid, and extracted at pH 2 to 9 and preferably 7.0 with a water-immiscible solvent such as ethyl acetate. The extract is treated with aqueous acid of pH 2 to 5, aqueous alkali of pH 8 to 10 and water and the crude antibiotic is precipitated by the addition of petroleum ether or hexane. The separated mycelium may be extracted with 70% aqueous acetone or 70% aqueous methanol, the extract treated with a solvent such as benzene and the crude antibiotic recovered therefrom. Purification is by chromatography on silica gel, elution with benzene or diethyl ether to remove impurities and then elution with chloroform/ methanol (95: 5). Separation into components is obtained by chromatography on silica gel followed by development using various solvent systems, e.g. benzene/ethyl acetate (8: 2), (7:3), (6:4), (5:5), (4:6), (3:7), (2:8) and ethyl acetate respectively. The antibiotic T-2636 components or mixtures thereof may be incorporated in ointments for the treatment of staphylococcal infections of humans and animals or may be dissolved in methanol or ethanol as a general disinfectant.
Patent GB-1227933-A (GB)
IPC: H04M1/315
Filed: 1969-01-10
Abstract: 1227933 Impulse transmitters PLESSEY CO Ltd 19 Feb 1970 [10 Jan 1969] 1662/69 Headings G3B BA1E1 BA1D6 BA1D10 and BA1C4 A telephone dial governor has a U-shaped member 1 with arms 3,4 having weights 6, 7 which rub on an embracing cup shaped member. The member 1 is loosely mounted on driven shaft 5 and is rotated by transverse rod 8 which is screwed into arm 3 and passes through clearance holes 10, 11 in shaft 5 and arm 4 respectively. It is stated that the governor may be adjusted by rotating rod 8.
Patent GB-1229420-A (GB)
IPC: E04B2/96
Filed: 1967-10-31
Abstract: 1,229,420. Windows. P. H. PLASTICS Inc. 31 Oct., 1968 [31 Oct., 1967], No. 49473/67. Heading E1J. A window system for buildings, and for incorporation in curtain walling comprises a wooden frame consisting of header 21, two jambs 22 and a sill 20, these frame members being clad in extruded plastics coverings 46, 51, 42 respectively each shaped to conform to their respective exterior surfaces of the frame members and to be retained thereon by a flange such as 49, 45 on the covering extending into a recess 48, 45 formed in the relevant member on a face not exposed to the weather; extruded plastics tracks 23 mounted in head member 21, plastics sill track member 39 over the extrusion cover 42 and jamb tracks as in Specification 1,172,251; movable glass panes 26, 27, 31, 32, retained in the window by the tracks and sealstrips 50 on the coverings to form a weatherproof joint with the header and jamb tracks and the plastics sill 39 to prevent exposure of the wooden frame to the weather when the window system is mounted in a building. The window may be a double double hung window as shown in Fig. 2 and claimed in divided Specification 1,152,788 or a double horizontally sliding pane type window (see Fig. 3), the header system being as in Specification 1,172,251 and provided with an insect screen having a frame retained in the track channels of the sill and header. Seal strips are provided between the tracks and panes.
Patent GB-1230930-A (GB)
IPC: G08C19/02
Filed: 1969-07-08
Abstract: 1,230,930. Electric selective signalling. LANIER ELECTRONIC LABORATORY Inc. 8 July, 1969, No. 34317/69. Heading G4H. The difference between the common potential at the bases of transistors 14-17, the value of which depends on which one of a plurality of switches S1-S4 is operated to connect a selected resistance R7-R10 between a voltage source and ground, and the differing potentials, derived from a voltage divider 12, at their emitters determines whether the transistors 14-17 conduct to apply firing potentials to the bases of associated transistors 18-21. When a transistor 18-21 conducts an associated load L1-L4 in a recording device 10 is supplied with a control current C1-C4.
Patent GB-1231271-A (GB)
IPC: A24D3/02
Filed: 1968-02-16
Abstract: 1,231,271. Tobacco smoke filters. MOLINS MACHINE CO. Ltd. and N. W. JACKSON. 13 Feb., 1969 [16 Feb., 1968], No. 7767/68. Heading A2C. A method of making cigarette filter tips of the kind comprising a quantity of granular material in a space between two filter plugs consists in forming a continuous web of wrapping 2, e.g. paper, into a trough, arranging filter plugs 8 at spaced intervals along the web, partially flattening opposed sides of the web and plugs by guides 5 to increase the height to which the sides of the web are in contact with the plugs so that the space for granules 12 between each pair of plugs is greater than in the undeformed state, delivering granules from pockets 11 in a wheel 3 to the spaces, and closing the wrapping around the plugs and granules to produce continuous filter rod of substantially circular cross-section. The method enables adequate granule charges to be received in the spaces while at the same time minimizing the possibility of granules being deposited on the surfaces of the plugs over which the wrapping is subsequently rolled. In addition to the flattening of the sides of the trough and plugs the bottom may also be flattened slightly, as shown. The plugs may be initially of the same diameter and density as required in the final product or of greater diameter and less density.
Patent GB-1233670-A (GB)
IPC: A63H19/30
Filed: 1969-11-19
Abstract: 1,233,670. Toy railway tracks. INTERLEGO A.G. 19 Nov., 1969 [6 Dec., 1968], No. 56636/ 69. Heading A6S. A current feeding means for a sectional railway track comprises two inverted U-shaped metallic conductors 10 (Fig. 2) attached to an insulating base 20 by tongues 14a folded under the base which are arranged to pick up electrical power from a connector (Fig. 8) the studs 31 of which clip into recesses in the underside of the base. The base clips onto sleeper elements so that the current feeding rails are arranged to lie parallel to and between the track rails of the model railway.
Patent GB-1238769-A (GB)
IPC: B24B7/00
Filed: 1969-05-27
Abstract: 1,238,769. Grinding. MASCHINENFABRIK ERNST THIELENHAUS. 27 May, 1969 [30 July, 1968], No. 26714/69. Heading B3D.  A process for grinding a flat surface on to a workpiece 1 comprises placing the workpiece 1 on a support plate 2, moving the support plate or a grinding tool 3 to bring a flat face 4 of the tool into engagement with the workpiece and urge it against the plate, setting the plate or tool in its adjusted position, rotating the tool or plate until the grinding pressure between the tool and the workpiece diminishes due to release of elastic stress in the workpiece, again pressing the workpiece between the tool and support plate to determine a second setting of the tool or plate, setting the tool or plate in that second position and rotating the tool or plate until the grinding pressure again diminishes, this cycle being repeated until the workpiece has been ground sufficiently flat. When the tool is rotated to effect the grinding it may also be rotated as it is moved to urge the workpiece against the support plate.
Patent GB-1239221-A (GB)
IPC: B22D39/04
Filed: 1967-04-21
Abstract: 1,239,221. Weighing apparatus. SPEEPCAST Ltd. and D. STERN. July 19, 1968 [April 21, 1967], No. 18545/67. Heading G1W. A moulding or casting machine is provided with a weighing device having a weighing pan for receiving articles moulded by the machine, the weighing device being arranged to prevent the machine producing further articles if the article or articles being weighed are less than a predetermined weight value. As shown, a weighing pan 14 in the form of a chute having a closeable flap 15 at its outlet end is mounted at one end of a pivotally supported beam 10 which carries a counterweight 12 at its other end. The weighing pan 14 is arranged below a discharge hopper 16 through which one or more articles are directed to the weighing pan at the end of each moulding cycle of the machine. At the end of one moulding cycle, a delay-timer is actuated which allows the article or articles produced in that cycle to settle in the weighing pan. The delay timer then operates a pneumatic valve which, through a piston cylinder arrangement 21, 22, unlocks the beam for pivotal movement and then only if the article or articles in the pan 14 are of sufficient weight to tilt the beam against the action of the counterweight 12 are contacts 23, 24 closed, the closure of the contacts 23, 24 causing pneumatic valves to open the flap 15 for discharging the pan 14 and to lock the beam against further pivotal movement, and also a signal to be relayed to the machine to commence a new moulding cycle. In an alternative arrangement the articles are arranged to be swept or blown off the weighing pan 14.
Patent GB-1250716-A (GB)
IPC: C10M169/00
Filed: 1969-01-27
Abstract: 1,250,716. Lubricants. M. OHKAGE. 27 Jan., 1969 [26 Jan., 1968], No. 4430/69. Heading C5F. [Also in Division C1] A solid lubricating agent, namely molybdenum sulphide or tungsten sulphide in flake form is prepared by mixing the powdered metal i.e. molybdenum or tungsten with sulphur, heating the resultant mixture at a temp. above the m.p. and below the b.p. of sulphur to give small particles of the corresponding sulphide, and then heating said sulphide at a temperature of 550-650‹ C. to produce an exothermic reaction, thereby recrystallizing the sulphide into flake form. The mixture of metal and sulphur may be moulded into pellets, and the mixture may be heated to a temp. of from 150-200‹ C. The product may be crushed to give particles of a size less than 1À0 micron. The sulphide so produced may be used in a mineral oil lubricating composition or alone.
Patent GB-1258677-A (GB)
IPC: H04M9/08
Filed: 1970-04-10
Abstract: 1,258,677. Side tone circuits. STANDARD TELEPHONES & CABLES Ltd. 10 April, 1970, No. 17211/70. Heading H4R. An arrangement for connecting a microphone and a receiver to a four wire line to provide sidetone, while retaining isolation between the send and receive lines, comprises two six terminal bridge networks A 1  to F 1  and A 2  to F 2  one of which has the receiver R connected across one of its diagonals and the other the microphone M, together with an amplifier if desired. The bridge impedances and the impedances of the microphone and receiver are selected so that the second and third diagonals in each bridge are conjate one to the other, one of these diagonals being connected to the send or the receive line and the other diagonals of the two bridges being interconnected via optional resistors g so that the send and receive lines are effectively isolated one from the other by the balanced bridges. The circuit is analysed to derive the power transfer between the lines and the microphone or receiver and to derive an expression for the side tone level. To compensate for the inductive impedance of the receiver, networks a 1  are included in the receive bridge while to provide compensation for the poor low frequency characteristics of the line the capacitors C a  and C b  are included in the send bridge. Inductors may be included in the send bridge to provide compensation for H.F. loss in the line.
Patent GB-1265471-A (GB)
IPC: B28B17/02
Filed: 1967-11-23
Abstract: 1,265,471. Extruding gypsum. BPB INDUSTRIES Ltd. 21 Feb., 1969 [23 Nov., 1967], No. 53415/67. Heading B5A. In a method of extruding gypsum, a mix of gypsum and water is adjusted such that a predetermined time after contacting the plaster with water the mix attains a degree of stiffening enabling it to retain its extruded cross-section. Preferably a synthetic resin such as ureaformaldehyde, melamine formaldehyde, polyvinyl acetate, polyacrylate, or a copolymer of monomers which include the residue of a synthetic, predominantly tertiary, carboxylic acid with other monomers such as vinyl acetate, is added to the mix by an amount from 2¢-10% by weight of plaster. Such resins act both as a reinforcement in the final product and a lubricant for the mix during extrusion, the lower extrusion pressure thereby required facilitating the production of a low density product. Other additives mentioned, in addition to conventional retarders, accelerators and setting stabilizers and a conventional aggregate such as sand, are lightweight aggregates such as perlite, vermiculite, granular polystyrene and ureaformaldehyde foam in an amount not exceeding 20% by weight of the plaster, fibrous reinforcing material such as chopped textile fibres, wood pulp, polypropylene and mineral fibres and glass fibres, modifying agents such as cellulose ethers and clay such as bentonite in an amount from 5-35% by weight of the plaster. It is stated that the lightweight aggregate under relatively high extrusion pressures may act as a lubricant. To further reduce the density of the product, the mix may be received on a conveyer belt and be delivered thereby to a drying chamber. Three examples are given.
Patent GB-1288042-A (GB)
IPC: B65B61/26
Filed: 1968-11-01
Abstract: 1288042 Marking webs ROBINSON WAXED PAPER CO Ltd 29 Oct 1969 [1 Nov 1968] 14858/72 Divided out of 1288041 Heading D1L An applicator device for marking a moving web with e.g. ink comprises a felt tip 1 retractably mounted in a housing 2 and a shutter 4 hinged to the housing and arranged to cover the housing when the tip is in its retracted position. The tip has a barrel 6 provided with ink. A two piece rod 22, 24 interconnected by a spring 26 is connected between the barrel 6 and shutter 4 such that movement of the tip and barrel operates the shutter. The barrel 6 may be actuated by a pneumatic piston, the airline of which also provides ink under pressure to the barrel 6.
Patent GB-1288870-A (GB)
IPC: B64F1/02
Filed: 1970-11-09
Abstract: 1288870 Aircraft arresting system BORGS FABRIKS AB 9 Nov 1970 [22 Dec 1969] 53153/70 Heading B7G An aircraft arresting apparatus comprises an arrester wire 2 attached to first braking means 3, 4 and a collapsible and elevatable net 5 connected to second braking means 7, 8 both wire and net extending across a runway or runway extension, control means for effecting automatic raising of the net to arrest an aircraft which has failed to engage the wire but which ensures that the net is not actuated if effective engagement occurs. The control means comprises photocell gates 10, 11 for actuating an automatic control device 12 connected through a breaker relay 16 to a circuit 13 having a net raising actuating mechanism 14, 15, the relay 16 being attached through line 17  to the brakes 3, 4. Engagement of the wire by the aircraft activates magnets and induction coils associated with the brakes 3, 4, so creating a signal which breaks relay 16 preventing normal activation of the net. The relay 16 may be broken solely by activation of the wire by an aircraft arrester hook.
Patent GB-1289070-A (GB)
IPC: H01R43/055
Filed: 1971-04-19
Abstract: 1289070 Making electrical connections BUCHANAN ELECTRICAL PRODUCTS  CORP 19 April 1971 [9 Feb 1970] 8374/72 Divided out of 1289069 Heading B3A [Also in Division B8] The Specification describes and claims the vibratory feeding receptacle disclosed in Specification 1,289,069.
Patent GB-1289965-A (GB)
IPC: F16N13/16
Filed: 1968-12-03
Abstract: 1289965 Lubricating; valves TECALEMIT (ENG) Ltd 26 Nov 1969 [3 Dec 1968] 57369/68 Addition to 1105383 Headings F2A and F2V The lubricating apparatus described in parent Specification is modified in that the control unit comprises a cylindrical first housing 23 axially reciprocable by air under increased or reduced pressure, and a second housing 19 reciprocably rotatable by the first housing through at least two balls 21 between and contacting the housings and co-operating with helical troughs 20, 23A in each of them. The balls 21 are retained in helical slots in a fixed keeper ring 22. The second housing 19 is free to rotate about the shaft 1, and is able to turn the shaft in one direction only by means of a pawl 15 on the housing engaging a ratchet 14 secured to the shaft, thereby operating lubricant pumps 3 through cams 4. The housing 19 may be constrained from rotating by further balls 24 situated in axial troughs 25, 26 in the housing and fixed member 29. The controlling air supply is admitted to the chamber 16 by the aperture 13.
Patent GB-1296947-A (GB)
IPC: G07F5/02
Filed: 1971-04-19
Abstract: 1296947 Football game apparatus K J YLINEN 19 April 1971 [10 March 1970] 23637/71 Heading A6H [Also in Division G4] An amusement machine for playing a football-type game includes a playing area 4, having goals 5 and 6, and arms 7 and 8 swing- able by operation of knobs 12 and 13, resepectively, for propelling a ball. Insertion of a coin to free a blocking mechanism (Abridgment group G4) allows six balls to roll to a station, from which they can be delivered one at a time to the playing area by operating a knob 14. A trap located beneath the cut-out area of each goal prevents balls entering the goals from returning to the delivery station until the blocking mechanism is next freed.
Patent GB-1297250-A (GB)
IPC: F16L19/08
Filed: 1970-11-24
Abstract: 1297250 Pipe connectors PLASSON MAAGAN MICHAEL INDUSTRIES Ltd 24 Nov 1970 [5 Dec 1969] 55879/70 Heading F2G A pipe connector comprises a body 2, a nut 8 and a split ring 6. The body 2 has a bore 10, an annular shoulder 14 and screw threads 15. The nut 8 has screw threads 25, which engage the threads 15 and a tapered bore 24 which fits around the tapered exterior of the split ring 6. The bore 24 is sized such that its wider end fits easily about the narrower end of the split ring 6. Thus when the ring 6 is located on a pipe 4 and the nut 8 brought up so that the bore 24 begins to overlie the ring 6 and the threads 15, 25 engage split 16 in the ring 6 is not closed. On further tightening of the screw threads 15, 25 the ring 6 is compressed and the split 16 closed and the ring bites into the pipe 4. When fully tightened the end of the pipe 4 abuts the annular shoulder 14 and the nut 8 compresses the ring 6 which abuts the outer end of the body 2. As shown the body 2 may be able to connect two pipes 4 and sealing rings 12 may be located in both of its bores 10. In a modification, Fig. 2 (not shown), a bush (30) is located within the pipe 4 and this bush has an external diameter equal to the internal diameter of the pipe 4. The bush (30) may have a lip (32) which is outwardly directed so that the end of the pipe 4 and the annular shoulder 14 do not abut when the connector is tightly assembled.
Patent GB-1309804-A (GB)
Title: Roll doctor apparatus
IPC: B41F35/00
Filed: 1970-06-06
Abstract: 1309804 Doctor apparatus for printing machines JOSEPH WINTERBURN Ltd 28 May 1971 [6 June 1970] 27442/70 Heading B6C [Also in Division D2] A roll doctor apparatus comprises a carrier 16 having an edge portion received in a channelshaped support 17 mounted on the carrier and supporting a doctor 30, and a tube 37 disposed between the carrier edge portion and the support and expansible by the introduction of fluid, e.g. air, into it to pivot the support about the axis of a pivot shaft 32 to cause the doctor to engage the roll 12, the tube 37 being covered by the support 17 and the external surfaces of the support being devoid of ribs. As shown, the roll is a drying roll of a paper-making machine acting on a paper web 13, but the invention may be applied to a bleaching, dyeing or printing machine. A further roll may be disposed beneath the web. The carrier 16 is pivoted on trunnions 19 and is adjustable by means 22 on a link 21. A second link 21 may be provided, the links being on opposite sides of the machine. The support 17 may be continuous and flexible but preferably comprises a plurality of side-byside sections, Fig. 2 (not shown), and each section comprises a sheet-metal Z-section having flanges 24 and 26 and a web 25, and a sheetmetal flange 28 riveted to the flange 26. The doctor 30 is releasably held in a U-shaped part 29 by spring clips 31. Pins 35 on the carrier 16 limit the pivotal movement of the support 17, or the flange 24 may be hooked round the shaft 32 and the pins 35 omitted. A second expansible tube 36 is provided for moving the doctor away from the roll. In a second embodiment, Fig. 3 (not shown), the second expansible tube is disposed at the same side of the carrier 16 as the first expansible tube but at the opposite side of the pivot shaft. The sections of the support 17 may be formed in one piece by extrusion. The second expansible tube may be dispensed with, the doctor being moved away from the roll by gravity.