baber/WOPTO huggingface dataset:
Patent GB-1354010-A (GB)
Title: Multifrequency signal receivers
IPC: H04Q1/453
Filed: 1971-12-15
Abstract: 1354010 Voice frequency signalling WESTERN ELECTRIC CO Inc 15 Dec 1971 [18 Dec 1970] 58212/71 Heading H4R In a system in which individual signal pulses are formed from a combination of simultaneous frequency signals of differing frequencies and having a certain minimum common duration, a receiver is arranged to sequentially test the signal pulse for the presence of a set of predetermined frequencies, by employing a tuned circuit having switchable resistance elements which are sequentially switched in and out of the circuit according to which frequency is being scanned. Preferably the time for which each frequency is scanned is proportional to the period of the frequency. In the system described the signal pulses comprise two frequencies, one selected from a group of four low frequencies in the range 697-941 Hz and the other from a group of four high frequencies in the range 1209-1633 Hz. The signal pulses are first applied to limiters (not shown) whose outputs are summed by a circuit 203 and applied to a switched resistor second order active R-C filter 204 the operation of which is controlled by an asynchronous clock 207 in combination with logic circuitry 206. The active filter (Fig. 3) contains an operational amplifier 302 and a modified twin -T, R-C circuit including resistor arms R1, R4 shown representively as variable resistors in the Figure. In practice switching circuits controlled by the clock 207 and logic 206 switch in different resistor values sequentially during the minimum common duration time of the frequency signals. Eight different switching operations are required, one for each possible frequency present, and the time the respective resistors are switched in is proportional to the period of the frequency being scanned. If the scanned frequency is present an output is obtained which is fed via a delay circuit to a respective output terminal 205n, the delay circuit being necessary to ensure simultaneity of output signals despite the sequential scanning. If two simultaneous outputs are registered, one in each frequency group, the information is translated into a particular digit designating signal and this information is utilized conventionally to establish a signalling and talking path through a central office switching network. Digit simulation, which may occur due to speech, can be detected by sampling the signal twice in the available time, e.g. twice in 40 ms, the simulation only being undetected if the two false frequency signals occur twice simultaneously approximately 20 ms apart. A pre-multiplexing or time speed-up (TSU) system cf. B.S.T.J. Jan. '69 pp. 249-254 may be combined with the arrangement (Fig. 2B, not shown) in which case the reactances in the switched resistor second order active R-C filter 204 are scaled in value in accordance with the magnitude of the frequency time compression ratio.
Patent GB-1288093-A (GB)
IPC: B23C3/32
Filed: 1969-12-03
Abstract: 1288093 Milling; grinding GUSTAV NEUHAUSER PRAZISIONSWERKZEUGFABRIK oHG 3 Dec 1969 [3 Dec 1968] 59018/69 Headings B3D and B3K A machine tool for milling or grinding helical grooves in a conical workpiece comprises means for effecting relative longitudinal feed between the tool and workpiece and means for rotating the workpiece at a speed which varies in dependdence upon the position of the tool relative to the workpiece to maintain a substantially constant cutting speed at all points of the conical surface. As shown the conical workpiece 22 is mounted for longitudinal movement relative to a cutter 24 on a slide 10 moved by a rotating lead screw 26. A differential gear 42 has a housing 44 rotated from the lead screw 26 and has an output shaft 52 which drives the work spindle. A control cam 80 also driven from the lead screw 26 is arranged to displace a rack 72 geared to an input shaft 66 of the differential gear the cam profile being adapted to effect the desired modification through the differential gear of the speed of the work spindle to maintain a constant cutting speed. The rack may be retracted rapidly from the cam 80 by a fluid pressure cylinder and piston 98. Alternatives for providing a variable speed input to the differential or other planetary gear are referred to, viz, a variable speed motor controlled by a variable resistor controlled in accordance with the position of the tool or a piston and cylinder arrangement controlled by a suitable control valve.
Patent GB-1440639-A (GB)
Title: Adjuster mechanism for varying the back-rest inclination of seats
IPC: B60N2/235
Filed: 1973-12-21
Abstract: 1440639 Seat-back adjustment mechanism A IMPICCICHE 21 Dec 1973 [22 Dec 1972 16 March 1973] 59328/73 Heading A4J The mechanism comprises a pair of pivotally connected members 10, 11 for attachment to the back and seat respectively; a gear-wheel 14 or toothed sector fixedly mounted on one member 10 coaxially with the pivotal connection 13; a toothed member 15 slidably mounted on the other member 11 and urged towards the gear-wheel 14 or toothed sector by resilient means e.g. spring 17 and a pivotally mounted release lever 20 which, in use, moves toothed member 15 against spring 17 to disengage the gear-wheel 14 and the toothed member 15 to allow angular adjustment of the seat.
Patent GB-1313197-A (GB)
Title: Copper electrodeposition bath and method
IPC: C25D3/38
Filed: 1970-12-17
Abstract: 1313197 Electro-deposition of copper UDYLITE CORP 17 Dec 1970 [12 Feb 1970] 59982/70 Heading C7B Copper is electro-deposited from an aqueous, acidic plating bath containing a brightening amount of a quaternary ammonium compound obtained by reacting polyethyleneimine with an organic compound capable of quaternizing polyethyleneimine. Various quarternizing agents are listed including benzine chloride, allyl bromide, dimethyl sulphate; and propane sultone; and the agent may be reacted with the polyethyleneimine in an organic solvent, eg dioxane. The bath may also contain a polyether, eg polyglycol, and an organic sulphide having at least one sulphonic group, eg a mercaptan, thiocarbamate or tioxanthate. The bath may be of low copper content, eg down to 7À5 g/l copper. The bath may be used for both plating and refining of copper.
Patent GB-1368779-A (GB)
Title: Microwave furnaces for the treatment of sheet-shaped or plate- shaped workpieces made of a material capable of absorbing microwaves
IPC: H05B6/78
Filed: 1971-12-23
Abstract: 1368779 Microwave heating apparatus J H A SOULIER 23 Dec 1971 [31 Dec 1970] 60129/71 Heading H5H A microwave furnace, for treating sheet materials such as thermoplastic and thermosetting rubbers and resins, comprises a waveguide 1 having a slot 9 in its upper wall of a length corresponding to the width of the sheet 10 conveyed transversely with respect thereto, a metal plate 14 of the same width being placed facing the slot with its edge 14a sloping towards the antenna 2 of the magnetron 3 feeding microwave energy to the waveguide 1. Plate 14 is engaged in an aperture 15 opposite slot 9 and is adjustable in position by one or more screws 16. Plate 14 may comprise several smaller plates 18, 18a ... 18n, Fig. 3 (not shown), of successively decreasing heights, or may have a slope 14b, Fig. 6 (not shown), of exponential shape. The invention gives uniform absorption of microwave energy across the width of sheets 10, which are fed by rollers 11 through a passage defined by the slotted upper wall of the waveguide and a protective metal cover 13. A similar cover 17 is fixed over aperture 15. The adjustable plate 14 may be replaced by a metal part 20 of U-shaped cross-section containing a plate 21 of polytetrafluoroethylene, the parts 20, 21, being separately adjustable by elements 22, 23. Waveguide 1 has an adjustable absorbing load 6, and rings 5 of PTFE providing impedance matching elements.
Patent GB-1182850-A (GB)
Title: Display Case.
Inventor: MYERS JAMES EVAN
IPC: A47F3/04
Filed: 1968-12-23
Abstract: 1,182,850. Refrigerators. CLARK EQUIPMENT CO. 23 Dec.. ]968 [24 Jan., l968], No. 60955/68. Heading F4H. A refrigerated display case comprises a stationary section 12 which serves to receive at least one movable product supporting section 30, a removable front portion 13 and means for forming an air curtain across the open part of the assembled case. Section 12  includes air ducts 18, 19 which are laterally movable so as to allow the introduction of movable sections of different sizes, and the sections 30 are sufficiently elevated by wheels 34 as to pass over the ducts. The forward ends of the latter are engageable with front portion 13 which includes an air passage having an inlet 31 for receiving air from an elongated outlet 20 at the top of section 12 and from further outlets 32 at the rear of the stationary section. The latter is itself provided with shelves 36.
Patent GB-1234912-A (GB)
Title: Switch means for dual master cylinders
IPC: B60T11/20
Filed: 1969-12-18
Abstract: 1,234,912. Fluid pressure brakes. BENDIX CORP. 18 Dec., 1969 [15 Jan., 1969], No. 61698/69. Headings F2E and F2F. In a dual system master cylinder having two pistons 40, 44 slidably arranged in tandem within a common cylinder bore 14 and a switch, operative upon a failure of pressure in the fluid chamber 100 between the pistons, to open an electrical connection between the master cylinder housing and a terminal connected to one of the pistons and insulatedly mounted within the housing, a movable contact-forming plunger 72 is slidably mounted in a radial opening in the piston 40, a spring 74 biases it into contact with the sidewalls of the cylinder bore and an axially movable insulating wedge element 84 is actuated by piston 44 upon loss of pressure in chamber 100 to move the plunger out of contact by engagement with a ramp 86 to break the circuit and energize switch means 104 to light a warning lamp 106. Contact with piston 40 is made through a contact 54 slidable in insulator housings 60, 62 the arrangement being such that if pressure fails in a brake line due to leakage and floating piston 40 moves an abnormal distance an insulator 70 on the piston is interposed between contact 54 and the piston to break the circuit and again illuminate lamp 106.
Patent GB-723649-A (GB)
IPC: B42C9/00
Abstract: 723,649. Bookbinding. BOOK MACHINERY CO., Ltd. July 24, 1952 [July 27, 1951 ; Jan. 24, 1952], Nos. 17910/51 and 2005/52. Class 16. In a bookbinding machine wherein synthetic glue is applied to the backs 1 as the books are carried between conveyers, one of which is shown at 3, past one or more glueing devices, the glue is circulated by a pump 21 in a closed circuit comprising a reservoir 18, pipes 20, 22, 26, 28 and a manifold 24 having conduits to the glueing devices. In the form shown, three glueing devices 4, 5, 13 with conduits 32, 33, 34 and gate valves 32a etc. are provided, the first, 4, applying glue to the back edges of the leaves and to the very narrow marginal parts of the leaves which have been fanned by the arrangement described in Specification 723,652. After leaving the device 4 the leaves are restored to fully fiat condition and the device 5 applies a second coating to the backs. The third device 13 glues a lining strip 7 which is then applied to the backs by a presser plate 15 whereupon a roller 12 folds the margins of the liner against the top and base of the book. The glueing devices may be as described in Specification 723,736. A freely rotatable brush adjacent each glueing device works the glue into the backs, and the glueing devices and brushes are carried by pivoted brackets 58 so that they can be swung by the operator into and out of operative position. A cutting and roughening device 15a as in Specification 656,931 is preferably provided in advance of the first device 4. After leaving the third glueing device the backs pass against a beater as described in Specification 723,735.
Patent GB-2026303-A (GB)
Title: Gem stone setting
IPC: A44C17/04
Filed: 1978-07-29
Abstract: An illusion setting for a gem stone in which a separate claw mount 20, 22 centres the stone in the illusion mount and by a press operation is caused to grip the stone and be secured in the illusion mount. Fig. 4 is a cross-section showing the complete assembly. <IMAGE>
Patent GB-2003786-A (GB)
Title: Method of forming a microporous diaphragm
IPC: H01M50/491
Filed: 1978-09-08
Abstract: Disclosed is a method of forming an unsintered, nonwoven, wettable, microporous diaphragm of a fluorocarbon polymer. The diaphragm is prepared by maintaining a nonwoven, fibrous mat of a leachable material in contact with the external surfaces of the fluorocarbon polymer film while hot pressing the halocarbon polymer film above its flow temperature and below its thermal decomposition temperature, and thereafter leaching the fibrous mat out of the halocarbon film. Additionally, monomers having acidic or basic groups may be grafted to the pore walls. Also disclosed is a method of rendering a hydrophobic fluorocarbon polymer film wettable by compressing the film between a pair of nonwoven mats of a leachable fibrous material while maintaining the film above the flow temperature thereof but below its decomposition temperature and then leaching the fibrous material out of the film.
Patent GB-2004193-A (GB)
Title: Multiple-effect desalination apparatus
IPC: B01D1/26
Filed: 1978-09-12
Abstract: In a multiple effect desalination apparatus as described and claimed in U.K. Specification 1396074, the adoption of a vertical preheater 5 for preheating the saline solution, instead of horizontal preheaters, affords considerable savings of costly construction materials such as cupro- nickel alloys, facilitates the assembly and dismantling of tube bundles, and permits a saving in electric power consumption in use. <IMAGE>
Patent GB-2004452-A (GB)
Title: Self-irrigating cloche
IPC: A01G13/02
Filed: 1978-09-29
Abstract: A self-irrigating cloche for use in plant propagation comprises a generally tunnel-shaped member 1 made of transparent or translucent material. The member 1 has an upwardly-directed portion 2 which is arranged to receive an irrigation medium thereon, and side walls 3 which adjoin the portion 2 and whose lower edges 3a are disposed inside the maximum lateral extent of the member 1. The side walls 3 are arranged to conduct the irrigation medium from the portion 2 to their lower edges 3a, the irrigation medium being held on the external surface of the walls 3 by virtue of its surface tension. One or more U- shaped supports 4 are provided for insertion into a plant supporting matrix 5 on which the cloche rests. The support(s) 4 both support the member 1 and hold it in a desired shape. <IMAGE>
Patent GB-2008188-A (GB)
Title: Reciprocating Piston, Fuel Injected, I.C. Engine with Two Combustion Chambers in Piston Crown
IPC: F02B3/06
Filed: 1978-10-11
Abstract: Air drawn in through valve 7 is caused to swirl around the piston crown in which are formed two combustion chambers 4, 5 which are spaced apart longitudinally of the piston 3 and are connected by a passage 6. A fuel injecting nozzle 9 projects through the passage as the piston approaches TDC and injects fuel into the combustion chamber 4 farthest from the piston crown. A sleeve 18 surrounds, and is preferably carried by, the nozzle body. The sleeve 18 is a substantially gas-tight fit within the passage 6 and is axially movable relative to the nozzle body, and is biassed by a spring 21 so that it moves outwardly through passage 6 when a predetermined pressure of combustion gases develops in chamber 4. <IMAGE>
Patent GB-2042341-A (GB)
Title: Packaged wound dressing for burns
IPC: A61F15/00
Filed: 1978-12-01
Abstract: A sterile dressing pack for first aid treatment of burns includes a sealed container in which is disposed a non-adherent fabric web saturated with a sterile saline liquid, the whole having been sterilised by radiation. The sealed container may be enclosed in an outer container which also holds a further supply of saline liquid and a dispenser therefore. A burn can be quickly covered with the dressing and kept cool by addition thereto of further liquid.
Patent GB-2011101-A (GB)
Title: Developer for Electrostatic Photography
IPC: G03G9/087
Filed: 1978-12-12
Abstract: The invention provides a toner for electrostatic photography consisting of particles comprising a coloring agent and a binder resin comprising a terpolymer containing 2 to 80% by weight of units derived from nitrogen- containing heterocyclic vinyl monomer, 5 to 85% by weight of units derived from an aromatic vinyl monomer and 5 to 85% by weight of units derived from an alkyl acylate or methacrylate. The toner is non- agglomerating and has excellent stability and durability of charge characteristics. This toner is suitable for use in a developing method in which an electrostatic latent image formed on a photosensitive surface is developed with a magnetic brush, the toner image is transferred onto a transfer sheet and toner particles left on the photosensitive surface are removed by the magnetic brush to clean the photosensitive surface.
Patent GB-2016349-A (GB)
Title: Apparatus for cutting board, card or paper material
IPC: B26D5/02
Filed: 1979-03-12
Abstract: An apparatus for cutting board or paper comprises a rigid elongate guide (11) supported above a base (10), a cutting head (29) slidably mounted on the guide (11), and an elongate replaceable pad (43) of deformable material which 15 mounted on the base beneath the guide. The cutting head (29) has a handle whereby it can be drawn along the guide (11) and a replaceable blade (36) which is movable between an upper inoperative position in which its lower end is not exposed and a lower operative position in which said lower end is adapted to cut a board or paper placed on the base (11), the tip of the blade penetrating into said pad (43) of deformable material. <IMAGE>
Patent GB-2033181-A (GB)
Title: High-frequency electronic switch circuit
IPC: H03K17/74
Filed: 1979-09-19
Abstract: An electronic switch circuit includes a diode to which a forward or reverse bias is applied to turn it on or off, thereby permitting or preventing transmission of a signal through the switch circuit. In order to prevent a leakage signal from passing through the junction capacitance of the diode when the switch circuit is turned off, an inductance element is parallel- connected with the diode to form, along with the junction capacitance of the diode which is reverse-biased, a parallel resonant circuit which is tuned to the frequency of a signal to be transmitted through the switch circuit. Thus, a switch circuit is realized which can handle a high-frequency signal of up to the UHF-band. <IMAGE>
Patent GB-2046040-A (GB)
Title: Method of forming a bubble memory chip and a bubble memory chip made thereby
IPC: H01F41/14
Filed: 1979-12-03
Abstract: A method of forming a bubble memory chip comprises depositing a first dielectric layer (12) on a garnet substrate (10). A second dielectric layer (14) is formed on the first layer. A resist pattern (16) is formed on the second layer and then straight-wall etched by means which do not etch the first layer. A conductor layer (20) is deposited in grooves (18) formed by the etching and on the surface of the initial resist pattern. A coarse resist material (22) is formed over the relatively small portion desired to be covered by a conductor pattern and in coarse registration with the conductor layer to be preserved but not over the relatively larger portion which is to have no conductor pattern. This conductor layer is chemically etched in the areas not covered by the coarse resist material. Finally the remaining coarse resist material is removed with the conductor layer on the resist pattern 16 to leave a planar surface composed of a conductor pattern at a surface co-planar with the surface of the second layer. <IMAGE>
Patent GB-2045133-A (GB)
Title: Thread rolling dies
IPC: B21H3/06
Filed: 1979-12-12
Abstract: Screws having a thread formation with two starts of different depth are rolled between threading dies provided with protuberances for pointing the screws. Relatively reciprocating dies, or a roll and concave platen, may be used. Each screw is given a point of substantially conical configuration with a terminal thread thereon. <IMAGE>
Patent GB-2039406-A (GB)
Title: Signs and mounting means therefor
IPC: G09F1/10
Filed: 1979-12-20
Abstract: A sign, such as an L-plate, for a vehicle consists of a flat bag (10) having "L" markings (16, 18) on its opposite faces (15, 17) inverted with respect to one another. The sign (10) is mounted on the vehicle by attachment means (20) comprising a wire frame (21) over which the bag (10) is slipped and manually deformable wire elements (25) which are bent into conformity with parts of the vehicle. The attachment means (20) also comprises hook- shaped wire members (27) to hook over the edge of a panel or bumper of the vehicle. Attachment means (20) may be mounted on the vehicle with the frame (21) optionally in a vertically upstanding or depending disposition, and the relatively inverted, duplicate markings of the sign (10) permit of correct positioning of the sign (10). <IMAGE>
Patent GB-2039252-A (GB)
Title: Apparatus for applying different media in flowable form to a web of material
IPC: B41F15/10
Filed: 1980-01-09
Abstract: Apparatus for applying different media in flowable form to a web of material, including media feed means which is guided transversely over the width of the plane in which the web of material is passed through the apparatus, and different media reservoirs and closable outlets for the media, with the media discharges out of the media feed means being reciprocable or not in their position relative to the plane of movement of the web of material, with each media discharge region (44, 144) of the media feed means being connected to more than one media reservoir (41) by way of individually remotely controllable feed flow control means (60). The feed flow control means may be under programmed control. The media may be applied directly to the web, or passed through a stencil. <IMAGE>
Patent GB-2068778-A (GB)
Title: Shower spray head
IPC: B05B1/18
Filed: 1980-01-10
Abstract: A shower spray head 1 which is operable to provide at least four selected alternative water flow paths and possible combinations of selected two flow paths has a first housing part 4 attachable to a source of fluid under pressure and a second housing part 5 including an apertured valve plate 11 fixedly connected thereto which is movable by rotations of the second valve part 5 about an axis 6 to co-operate with valve port means 12 on the first housing part 4 to provide the selected desired fluid flow paths. In operation the second housing part 5 can be moved to positions providing a first fluid flow path in which a vibrator turbine rotor 7 is driven by the fluid to produce vibration of a vibrator portion 8 to which an accessory can be attached, a second fluid flow path in which a pulsator turbine rotor 9 is driven by the fluid to produce a pulsating fluid flow, a third flow path which produces a non-pulsating fluid flow or a fourth flow path which produces an aerated fluid flow. <IMAGE>
Patent GB-2040151-A (GB)
Title: Liquid channelling member
IPC: E02D3/10
Filed: 1980-01-30
Abstract: A liquid channelling member includes a plurality of tubular core members 2 each having a helical gap (4) along its length and an envelope constituted by a longitudinally extending liquid impermeable portion 1 and a filter portion 3, whereby, in use, the core members are contained within the envelope to provide the channelling member. <IMAGE>
Patent GB-2071981-A (GB)
Title: Device for collecting spiders or the like
IPC: A01M3/00
Filed: 1980-03-03
Abstract: A device for removing spiders from a bath or sink comprises a container 1 having a handle 4, a smooth interior surface 7 and a mouth 2, the mouth 2 is formed in part by an edge 11 of a container wall portion which is flat in the region of the edge 11 and is thinned towards the edge.