baber/WOPTO huggingface dataset:
Patent GB-1461477-A (GB)
Title: Recursive digital filter
IPC: H03H17/04
Filed: 1974-07-05
Abstract: 1461477 Active filters PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 5 July 1974 [9 July 1973 20 Sept 1973] 29941/74 Heading H3U A recursive digital filter comprises a multiplying device 7 for multiplying inputs on lines 7(1), 7(2) by coefficients a, b derived from a source 10 and producing outputs on lines 7(a), 7(b) which are applied to inputs of an adder 9 whose output is connected to delay 5, the multiplier being included in a feedback circuit which comprises the delay 5 and a device 11 which restricts the number of bits in the feedback signal by discarding those bits which are less significant than a predetermined number. In the arrangement of Fig. 7 input signals x(n) are summed with one output 7(b) from the multiplier 8 in adder 2, the output from the adder is delayed by one period of clock 6 in delay 4 and the delayed signal is summed with the other multiplier output to provide an input to further delay 5 whose output is connected back to the multiplier input via the discarder 11. The arrangement increases the area of stability of the multiplication coefficients a, b and a further improvement may be obtained by the inclusion of a circuit 21, 22 which changes the least significant bit of the output from 11. The discarder 11 may be situated between the adder 9 and the delay 5 Fig. 8 (not shown) or may be replaced by two discarders (11, 11<SP>1</SP>) connected at the outputs of the multiplier Fig. 5 (not shown). In a further modification Fig. 9 (not shown) the input signal is added between adder 9 and delay 5. In another arrangement, Fig. 10 (not shown) a transpose configuration is used, i.e. branch points and summing points are transposed and the directions of the signal flows are reversed. The basic recursive filter may be combined with a further (non recursive) filter to provide a higher order filter, Fig. 11 (not shown). A suitable circuit for the discarder is also described Fig. 12 (not shown).
Patent GB-1491872-A (GB)
Title: Olefin polymer compositions suitable for fabricating into self-sealing films
IPC: C09J7/10
Filed: 1974-07-05
Abstract: 1491872 Polyolefin compositions EXXON RESEARCH & ENG CO 9 May 1975 [5 July 1974] 29970/74 Heading C3P Compositions suitable for making self-sealing films with good antifog properties and good oxygen permeability comprise (1) 95À0 to 99À9 weight per cent of either a copolymer of ethylene with a vinyl or hydrocarbyl-substituted ester of a C 1-30  monocarboxylic acid or a mixture of a thermoplastic polyolefin with such a copolymer, the copolymer or mixture of thermoplastic polyolefin and copolymer containing 0À10 to 1À95 weight per cent of polymerized vinyl or substituted vinyl ester, and (2) 0À1 to 5À0 weight per cent of a partial ester of a of a carboxylic acid and a polyol. The compositions may be made into films by tubular blowing or chill roll casting. Preferred partial esters are sorbitan monolaurate, monostearate and monobehenate. In an example film is blown from a composition comprising polyethylene, ethylene/vinyl acetate copolymer and sorbitan monolaurate, the vinyl acetate content of the polymer blend being 1À83 weight per cent.
Patent GB-791497-A (GB)
Title: Brush
IPC: A46B3/18
Filed: 1956-10-02
Abstract: 791,497. Brushes. OSBORN MANUFACTURING CO. Oct. 2, 1956 [Dec. 15, 1955], No. 30013/56. Class 19. The stem of a brush comprises wire of halfround cross section that is doubled on itself to grip brush material 3 and is then twisted together beyond the material, and the opposed faces of the wire where it contacts the material is recessed as at 6. Adhesive or cushioning material may fill the recesses 6. Specifications 657,024, 665,097 and U.S.A. Specification 2,526,769 are referred to.
Patent GB-1438646-A (GB)
Title: Mobile light
IPC: B60Q1/076
Filed: 1972-06-28
Abstract: 1438646 Adjusting vehicle lamps C RUDZKI 5 June 1973 [28 June 1972] 30156/72 Heading F4R  The reflector 2 of a vehicle lamp is pivotally mounted inside an outer reflector 1 so that the direction of the beam of light emitted by the lamp may be varied, the means for controlling the angular position of the reflector 2 comprising a ferromagnetic member 3 rigidly secured to the reflector, a plurality of separately energizable electromagnets such as EML1, EML2 ... arranged adjacent the path followed by the member during pivotal movement of the reflector, and a switching arrangement adapted to connect the electromagnets one at a time to a source of electric current so that the member is drawn towards whichever electromagnet is energized. In the embodiment shown in Fig. 1 two headlamps on the left and right of the vehicle are controlled by respective sets of electromagnets EML1 ... and EMR1 ..., ., the switching arrangement being a contact arm 6 fixed to the steering shaft and adapted to slide over contacts CL1 ... and CR1 ... as the steering wheel is turned. During a turn to the left the left-hand headlamp beam turns in the same direction whilst the right-hand headlamp beam remains in the "straight ahead" position, the effect being similar but opposite-handed during a turn to the right. In a modification (Fig. 3, not shown) both beams turn simultaneously in the same direction in response to movements of the steering wheel. In an alternative embodiment (Fig. 4, not shown) an auxiliary front lamp is tilted up and down in response to movements of a hand-operated slider (17) on the steering column, the slider engaging contacts (1-6) connected by leads to corresponding electromagnets.
Patent GB-144197-A (GB)
Title: Improvements in road grip devices for vehicle wheels
IPC: B60C27/06
Filed: 1919-12-03
Abstract: 144,197. Smith, H. C. Dec. 3, 1919. Tread bands, projections, and surfaces.-The anchoring-means for a non- skid chain i consists of a block a adapted to fit between two adjacent spokes and having the ends inclined and grooved to embrace the sides of the spokes. The block may be in two parts b, c drawn together transversely by a bolt g and a spring steel yoke member m. A lining of felt or other padding-material k may be fitted in the grooved ends of the block.
Patent GB-1156670-A (GB)
Title: Image storage device.
IPC: H01J29/44
Filed: 1966-07-06
Abstract: 1,156,670. Cathode-ray storage tubes. WESTINGHOUSE ELECTRIC CORP. 6 July, 1966 [2 Aug., 1965], No. 30325/66. Heading H1D. In a cathode-ray storage tube the storage target comprises a layer 28 of porous material having a density of less than 10%, e.g. 1 to 2%, of the material in bulk form and exhibiting the phenomenon of secondary electron conduction, the layer being deposited on a mesh electrode 26 which may be of the woven type or made from a solid sheet which has been etched to provide a perforate structure. The storage material may comprise KCl, BaF 2 , NaCl or MgO and may comprise particles 1 to 2 microns in diameter. It may form an evaporated layer 5 to 40 microns thick. The target is bombarded with high energy electrons on the other side to the mesh 26 to form the charge image and scanned on the mesh side with a low velocity reading beam. In one embodiment, Fig. 1 (not shown), comprising an image pick-up tube with an image section, the operation cycle comprises, (a) an erasing and/or priming step in which the surface elements of the storage layer 28 exposed through the mesh 26 are driven to ground potential, (b) a writing step in which the elements are first driven to -8 volts by lowering the potential of the mesh 26 from +10 to +2 volts and then raised to between -8 and -4 volts as a result of secondary electron conduction through the storage layer under bombardment of the target by the high velocity imaging electrons, and (c) a reading step in which the landing of the low velocity reading beam on the mesh to produce the output signal is controlled by the potentials on the exposed elements of the storage layer. In another embodiment, Fig. 2 (not shown) comprising a scan converter the storage elements are driven to positive potentials by bombarding the storage layer with a modulated writing beam to produce secondary electron conduction through the layer and the output is derived by simultaneously scanning the mesh side of the target with the low-velocity reading beam. Reference has been directed by the Comptroller to Specification 1,116,084.
Patent GB-536591-A (GB)
Title: Improvements relating to cabinets for radio receivers and the like
IPC: H04B1/08
Filed: 1939-11-18
Abstract: 536,591. Radio-receiver and loudspeaker cabinets. KOLSTER-BRANDES, Ltd., and SMITH, W. A. ST. CLAIR-. Nov. 18, 1939, No. 30328. [Class 40 (v)] [Also in Group XXXIX] In a cabinet for a radio-receiver or loudspeaker (1) the comers 2 of side frames 1 are rounded to allow the application without cracking or breaking of a flexible front board 5 of fibre, cardboard, or fabric-covered board; (2) wall panels 8 of wood or fabric-covered wood serve to cover edges 1 of a fabric 6 covering other walls of the cabinet; and (3) a fabric 6 covering a wall of the cabinet is wrapped around one or more edges of the wall and clamped under adjacent sides or side panels. The front wall of the cabinet is formed with a large circular aperture or with a group of smaller apertures 9 behind which the loudspeaker is mounted. The covering of such apertures by the fabric 6 is in accordance with Specification 483,419.
Patent GB-153791-A (GB)
Title: Improved swing for children
IPC: A47D13/10
Filed: 1919-12-04
Abstract: 153,791. Hubbert, E. W. Dec. 4, 1919. Hammocks. - A small hammock A, Fig. 1, is fitted with spring hooks D, so that one side can be drawn together to form a bag-like swing for young children, as shown in Fig. 2. The hammock may be doubled lengthwise and used as a swing for older children, Fig. 4. By providing suitable stretchers it may be used as a safety hammock for infants.
Patent GB-654347-A (GB)
Title: Improvements in vapour generating and superheating units
IPC: F22B31/00
Filed: 1948-11-23
Abstract: 654,347. Water-tube steam boilers; superheaters. BABCOCK & WILCOX, Ltd., and SCHAAP, W. F. C. Nov. 23, 1948, No. 30380. [Classes 123(ii) and 123(iii)] [Also in Group XII] In a steam generator of the type disclosed in Specifications 532,245 and 534,279 secondary air inlets and burners 7 are so disposed in the corners of the com bustion chamber 2 as to produce a rotary turbulent flame along the axis of said cham ber, inlets 40 are pro vided in the upper narrowed part 8 of said chamber for the injection of tertiary air or cooled combus tion gases, and a gas passage 28 lined witl water tubes 26, 29 leads downwardly tc a vertical convectior pass 30 containing superheater tubes 41 42. The upper super heater tubes 41 are connected directly to a drum 9 disposed at the top of and in line with the front wall 3 and to an outlet header 43, the lower superheater tubes being connected to upper and lower headers 44 and 45 respectively. The roof of the combustion chamber 2 is provided with a series of dampers 47 whereby waste gases can be diverted to a gas conduit 46 byepassing the gas passage 28 and the convection pass 30. The drum 9 with the front wall 3 is supported from the boiler framework by slings 50 and each bank of tubes defining inner and outer walls are suspended at the same level.
Patent GB-964784-A (GB)
Title: Improvements relating to vibration generators
Inventor: HEAD THOMAS JOHN
IPC: F15B9/03
Filed: 1960-09-02
Abstract: 964,784. Diaphragm vibrators. DOWTY ROTOL Ltd. Sept. 4, 1961 [Sept. 2, 1960], No. 30415/60. Heading G5J. [Also in Division F1] In a vibration generator comprising a reciprocating motor 48, the supply and exhaust of fluid is controlled by a shuttle valve 41 reciprocated in response to variations in flow from nozzles 29, 31 connected to opposite ends of the shuttle valve and to a fluid pressure source P, the variations in flow being produced by an electromagnetically vibrated "flapper" plate 22 located between the nozzles. An A.C. signal generator S and amplifier A supply the "flapper" plate actuating signals. Piston 61 is returned to its central position in response to signals fed to the amplifier from a contact 66. The motor may be connected to a sonic diaphragm, as shown, or to a mass which acts to impart a reaction load. Alternatively, a test piece may be connected between the piston rod and a fixed support. Reference has been directed by the Comptroller to Specification 845, 109.
Patent GB-905223-A (GB)
Title: Improvements in or relating to conveying installations for conveying articles through drying or stoving ovens
Inventor: ORWIN OLAF JOHN BARCLAY
IPC: B61B10/02
Filed: 1957-09-28
Abstract: 905,223. Rope railways. FISHER & LUDLOW Ltd. Dec. 18, 1958 [Sept. 28, 1957], No. 30451/57. Class 104 (2). In a conveyer installation for conveying elongated articles 12, e.g. motor car bodies, through a drying or stoving oven 10 wherein each article is suspended from a pair of trolleys 24, one near each end of the article, and an endless chain 13 running along an upper track 9 is provided with dogs 22 for propelling the trolleys 24 along a lower track 14, the tracks approach the oven at right-angles to the direction through which the articles pass through the oven and the lower track is divided before entering the oven into two tracks 14a, 14b, to which the trolleys are transferred alternately by a switch 29 which is moved from one to the other of two operative positions by successive trolleys through control means including a solenoid 31. The arrangement is such that articles approach the oven in an end-to-end relationship, after which the front trolley supporting each article passes to the track 14b while the corresponding rear trolley passes to the track 14a, so that the articles are moved into the oven in a direction transverse to their lengths. Beyond the switch 29 the trolleys at both ends of each article are engaged by dogs on two parallel runs of the chain 13 which pass through the oven in the same direction. After leaving the oven the trolleys engaged by the run of the chain 13 which passes around sprocket 15 are disengaged from the dogs on this run of the chain, while the run of the chain passing around sprocket 17 pulls the trolleys supporting the other ends of the articles around the sprocket 17 on to a portion of the track 14 which extends transversely away from the oven and into which the two track portions 14a, 14b merge. The driving chain comprises running rollers 20 and guide rollers 21 which engage corresponding surfaces on the upper track 9, while the trolleys have corresponding running rollers 25 and guide rollers 26. Specification 819,343 is referred to.
Patent GB-340056-A (GB)
Title: Improvements in and relating to fire-bars for furnaces
IPC: F23H17/12
Filed: 1929-10-08
Abstract: 340,056. Firebars. GIBSON, W., 75, Somerset Road, Newport, Monmouthshire. Oct. 8, 1929, No. 30478. [Class 51 (i).] Firebars of the type having a web carrying a number of separate box-like sections divided by transverse air spaces and open at the top, as shown in Fig. 2, are cast with fire-bricks constituting cores for the box-like sections and remaining located within and forming integral parts of the completed bars. The bricks may be wider and longer at the bottom than at the top, Fig. 3, and may be formed with recesses or projections to form a key with the metal. The bricks may be made of magnesite sand.
Patent GB-1357171-A (GB)
Title: Weft controller in a shuttleless weaving loom
IPC: D03D47/00
Filed: 1971-06-30
Abstract: 1357171 Weft-mixing shuttleless looms ENSHU Ltd 30 June 1971 30559/71 Heading D1E In an air jet loom weft threads 31a, 31b are pulled back between picks from alternately operated respective picking nozzles 1a, 1b by a pair of respective arms 119a and 119b which are pivoted on a fixed shaft 118, urged apart by a spring 123 and pivoted by respective abutments 128a, 128b on a sector disc 127 oscillated on the shaft 118 from a cam 129 rotated at half picking speed, abutments 126a and 126b on the arms releasing respective clamping means during picking. The degree of pull back is individually adjustable for each weft by an adjustable stop 130 for each arm 119. Each clamping means is disposed between a weft storage chamber F and an eye 111 through which the weft passes on its way via the arm 119 and a further eye in a guide rod 143 on the way to the picking nozzle and comprises a fixed resilient pad 108 and a resilient pad 114 on the arm 113 engaged by the respective arm 119.
Patent GB-1393469-A (GB)
Title: Anti-skid wheel speed transducer assembly
IPC: B60T8/171
Filed: 1973-06-27
Abstract: 1393469 Tachogenerators; mounting rotors GOODYEAR TIRE & RUBBER CO 27 June 1973 [25 July 1972] 30617/73 Heading H2A. In a tachogenerator anti-skid system wherein a rotor 18 has two magnetic assemblies 20, 22 for simultaneously generating pulses in each of two stator coils 43, 24a, an axial thrust is applied to the rotor by a spring washer 40 and screw-on end cap 42 in order to axially displace the races 28a, 28b &c. of the rotor bearings 28, 26 relative to each other. A symmetrical setting such as in Fig. 2a, wherein a clearance 29 is allowed in the bearings in order to accommodate thermal expansion of the rotor thereby gives way to an unsymmetrical setting such as in Fig. 2b. The rotor shaft 30 is driven by an arm 32 which is itself driven from the vehicle wheel (details not given).
Patent GB-1427959-A (GB)
Title: Process for the manufacture of laminates
IPC: C08J11/06
Filed: 1973-06-27
Abstract: 1427959 Plastics laminates BADISCHE ANILIN- & SODA-FABRIK AG 27 June 1973 [1 July 1972] 30624/73 Headings B5N B5A and B5B In a process for the manufacture of a laminate comprising an adhesion-promoting primer layer B between layers A and C by extrusion and simultaneous or subsequent bonding of the three layers, the waste material produced in subsequent processing of laminates of the type specified to form finished articles is comminuted, mixed and added, during extrusion, either to layer B or to layer C such that layer A consists at least predominantly of a plastics material a, layer C consists of or contains at least 10% by weight of a plastics material c differing from plastics material a and layer B consists of or contains at least 5% of a block copolymer b of the general formula (X-Y) n  or X(Y-X) n  where X is a vinyl aromatic polymer, Y is an optionally halogenated diolefin polymer and n is an integer of from 1 to 4, the transitions between the blocks being sudden or gradual. The materials a and c may be a styrene polymer, e.g. polystyrene, diene polymer modified polystyrene, a copolymer of styrene with acrylonitrile, an acrylate, methyl methacrylate, maleic anhydride or α-methyl styrene, or a diene or acrylate rubber-modified ABS or ASA polymer, an olefine polymer, e.g. polyethylene, polypropylene, polybutene or a copolymer of an olefine with a vinyl ester or an acrylate, a chloropolymer, e.g. polyvinyl or polyvinylidene chloride, a copolymer of vinyl or vinylidene chloride, a chlorinated polyolefine, a postchlorinated polyvinyl chloride, a methyl methacrylate polymer, an acrylate polymer, a diolefine polymer, polyformaldehyde, a polyurethane, a polysulphone or a polyamide. The block copolymer, which may be hydrogenated, preferably comprises polystyrene and polybutadiene blocks. Each of the layers A, B and C may contain up to 50% by weight of conventional additives, e.g. fillers, asbestos fibres, glass fibres, pigments, carbon black, stabilizers, ultraviolet absorbers, antistatic agents, flameproofing agents or lubricants. When preextruded layers are to be laminated, lamination may be effected under pressure and heat.
Patent GB-393574-A (GB)
Title: Improvements in coin-freed mechanism
IPC: G07F11/18
Filed: 1931-11-05
Abstract: 393,574. Coin-freed article-delivery apparatus. CLEWLEY, R., 43, Cleveland Road, Higher Crumpsall, Manchester. Nov. 5, 1931, No. 30659. [Class 27.] Coin action, mechanical-connection.-In a coin-freed vending machine of the kind in which a stop is lifted by the coin to release the delivery drawer, the coin being forcibly ejected when the drawer is returned to its initial position, the coin passes from a shoot g, Fig. 2, to a vertical slot c<1> in a lug tormed on the inner end of the drawer a and, when the drawer is pulled out, raises a stop formed by a straight lever e which lies across the path of the coin and is pivoted to an upstanding post d, Fig. 10, alongside the drawer. The lever is pivoted to the post by a split pin e<1> and is held in locking position to engage a shoulder c<2> on the top surface of the drawer lug by a spring f having one end f<1> hooked over the lever. The face of the lever is bevelled for engagement by the coin, but has flat portions to engage the shoulder c<2>. The post d is screwed into the slideway b for the drawer and is secured by a nut d<1>. The slotted lug may be built up as shown in Fig. 6, so that the projecting part c<3> can be renewed when worn. A full stroke of the drawer is ensured by a pawl engaging a fixed rack l the pawl being normally held in vertical position by a spring k, Fig. 8. Coin-slit closing-devices.-A spring n blocks the shoot g when the drawer is pulled out.
Patent GB-468603-A (GB)
Title: Improvements in or relating to automatic electric switches, particularly for street petrol stations
Filed: 1936-11-10
Abstract: 468,603. Mercury switches for petrol pumps. HEJDUK, F., and NEUMANN, J. Nov. 10, 1936, No. 30710. [Class 38 (v)] [Also in Groups XVIII and XXVIII] A tilting mercury switch is mounted at the nozzle end of the delivery pipe of a street petrol pump so as automatically to close the circuit to the pump motor when the nozzle is tilted into the dotted position. The switch may close the motor circuit either directly or through an electromagnetic switch 13. The switch comprises a glass tube 3 with contacts 1, 2 and mercury 4. The leads 7, 8 pass through a rubber cable 6 terminating in a rubber sheath 5.
Patent GB-428073-A (GB)
Title: Improvements in or relating to a method and apparatus for testing fluids
IPC: G01N31/22
Filed: 1933-11-06
Abstract: <PICT:0428073/III/1> Apparatus for testing milk, e.g. for the detection of mastitis, comprises a receptacle 11 having a cover 12 provided with areas of filtering material which is impregnated with one or more colourchange indicators.  The cover may for example have four flanged openings 15 in which are inserted filter elements consisting of discs 17 of muslin impregnated with bromocresol purple or bromo-thymol blue which are provided with rims 16 of waterproofed card.  Alternatively the cover may be composed of a layer of muslin secured between two layers of waterproofed card which are cut away to expose portions of the muslin.  The cover may be painted black to show up flakes in the milk.