baber/WOPTO huggingface dataset:
Patent GB-2050928-A (GB)
Title: Method and apparatus for molding ophthalmic lenses without spoilation
IPC: B29C45/56
Filed: 1980-05-15
Abstract: A method and apparatus particularly for molding ophthalmic lenses in which one of a pair of mold inserts 110a, 122 received in respective mold members 82, 84 to form a mold cavity 90, 92 is resiliently biased toward the other and is positively limited from separating beyond a predetermined extent. After closing the mold members, hot viscous polycarbonate is injected into the mold cavity at a pressure sufficient to overcome the resilient biasing and separate the inserts the predetermined extent. After injection, the resilient biassing compresses the injected resin to preserve the surface curvature as it cools to the glass transition temperature of the resin being employed, while the surfaces of the mold cavity, are maintained at a temperature just below the glass transition temperature of the injected resin to ensure uniform cooling. In a preferred embodiment, resin is injected into a multicavity mold having differently curved insert pairs in each cavity to mold simultaneously lenses of different commonly used foci in the near piano range. A knockout assembly for expelling the molded article from the mold cavity includes ejecting movement of an insert. <IMAGE>
Patent GB-2076974-A (GB)
Title: Control circuit test apparatus
IPC: G01R31/00
Filed: 1980-05-31
Abstract: A testing apparatus designed for testing the location of a fault occurring in a refuse compactor by identifying one or more locations within the electrical control system which are not functioning. The apparatus takes the form of a "black box" having a plug-type connector which can be inserted in a socket-type connector of the vehicle. A large number of indicator circuits (10, 11, 12) are arranged between the connector and a common line (22) having a reference voltage level. Each indicator circuit includes a protective resistor (16, 17, 18) and a light emitting diode (19, 20, 21). The electrical control circuit of the vehicle has electrically conductive elements in contact with a plurality of test locations, these conductive elements being led to a socket connector co-operable with the plug connector. Each indicator circuit has a test circuit including a voltage generator providing a second reference voltage along a common line (26), the test circuit incorporating a diode (25) and being connected to the indicator circuit on a side remote from the common line (22) to test the light emitting diodes. By plugging the "black box" into the socket on the compactor, all the test locations of the compactor circuitry are simultaneously tested. <IMAGE>
Patent GB-2079455-A (GB)
Title: A beer metering system
IPC: G01F1/66
Filed: 1980-07-05
Abstract: A Beer Metering System based on measuring the flow velocity by a sound wave method. Sound waves are transmitted along a section of pipe carrying the beer. The transmission time will vary depending on the flow velocity. An electronic detector coupled to an electronic measuring system computes the flow velocity from the time change for transmission. By alternately transmitting and receiving from each sound transducer involved, many errors may be eliminated. As the pipe diameter is accurately known, the flow rate can be computed from the flow velocity. Having computed flow rate, it is possible to control the dispensing of fixed volumes such as a 1/2 pint and to register a total flow volume.
Patent GB-2055019-A (GB)
Title: Improvements in or relating to telephone apparatus
IPC: H04M1/02
Filed: 1980-07-07
Abstract: The body for a telephone unit is designed to permit easy removal for maintenance and for initial assembly. The escutcheon plate which is a close fit to the dial is fitted in an oval hole which allows it to move on the body to clear the dial on removal of the telephone body.
Patent GB-2056366-A (GB)
Title: Rotary cutter heads
IPC: B27G13/04
Filed: 1980-08-11
Abstract: A rotary cutter head comprises a body formed with one or more parallel walled grooves 3 each for receiving an outwardly projecting cutter, the general plane of the or each groove being parallel with, but offset from, the axis of the body, a recess 6a formed in a wall of the or each groove, a clamping device located in the or each recess, the or each clamping device including a screw device 8 and a (optionally floating) clamping block 9, the screw device being operable to produce a compressive clamping force for holding a cutter in position in the groove, the compressive clamping force being imparted to the clamping block radially outwardly of the screw axis. A backing plate 16 may be mounted in each groove for engaging the surface of a cutter remote from the block, at least one projection on the backing plate engaging in a corresponding recess in the cutter to prevent the cutter from flying out. <IMAGE>
Patent GB-2059146-A (GB)
Title: Electric discharge lamp
IPC: A61N5/06
Filed: 1980-08-13
Abstract: The present invention provides an electric discharge lamp for irradiation purposes, comprising a discharge vessel which is permeable to ultra-violet radiation, electrodes arranged therein, a noble gas filling and a buffer gas or buffer vapour, wherein the discharge vessel contains a medium absorbing outside of the range of from 320 to 350 nm, as well as one or more elements or compounds thereof which emit an intensive radiation in the range of from 320 to 350 nm. As is particularly described, the absorbing medium comprises vaporised thallium iodide and the emitters of radiation in the 320-350 nm range are one or more of indium, gallium, or the halides thereof, or iron, nickel or manganese or compounds thereof. A number of specific examples are given.
Patent GB-2060672-A (GB)
Title: Mono-azo dye and dyeing process for polyester fibers
IPC: C09B29/08
Filed: 1980-09-11
Abstract: Mono-azo dyes are represented by the following general formula:-   <IMAGE> wherein R<1> and R<2> individually represent hydrogen atom, substituted or non-substituted alkyl group, alkenyl group and cyclohexyl group, R<3> represents hydrogen atom, chlorine atom, bromine atom, alkyl group, substituted or non-substituted alkoxy group or alkenyl group and R<4> represents hydrogen atom, chlorine atom, bromine atom, alkyl group, alkoxy group, hydroxy group, acylamino group, alkoxycarbonylamino group, aralkyloxycarbonylamino group or alkylaminocarbonylamino group.
Patent GB-2059880-A (GB)
Title: Water-borne life-saving apparatus
IPC: B63C9/05
Filed: 1980-09-12
Abstract: An apparatus according to the above title comprising a buoyant raft spacedly surrounded by and connected to a buoyant ring from the periphery of which depends a water-containable bag forming a shark screen about the raft, and additionally such raft in which the water-containable bag is formed by the canopy of a parachute in which the raft is packed, the periphery of the canopy containing inflatable means connected to the raft and, when inflated, forming the surrounding buoyant ring. <IMAGE>
Patent GB-2066899-A (GB)
Title: Centrifugal pumps and turbo- generators
IPC: F04D29/02
Filed: 1980-12-17
Abstract: A pump for use with corrosive liquids comprises an impeller 24 driven by an electric motor, the rotor assembly 11 of which is positioned in a chamber 39 formed by a stainless steel liner 26. The rotor assembly is mounted on a stainless steel tube 41 in a stainless steel can 30. The impeller chamber 37 communicates with the chamber 39 via ports 4 and the chamber 39 is sealed by 'O' rings 6, 33. The impeller hub is screwed to the tube 41 which rotates on a P.T.F.E. lining 10 of a fixed rod 25. The pump may alternatively operate as a turbo generator. <IMAGE>
Patent GB-2090149-A (GB)
Title: Dancing doll
IPC: A63H3/14
Filed: 1981-03-26
Abstract: A dancing doll comprises a figure with a torso to which arms are loosely articulated by pins. Legs are articulated to the bottom of the torso by pins passed through interdigitating tenons on the torso and legs. The legs have knee joints of similar construction. The doll is held on a rod 38 with a handle 40, the rod being branched to carry the figure at two spaced locations. A keyhole shaped board 41 having a round area 42 is provided for placement of the doll and having a tail 43 the user anchors the latter and holds the doll with feet resting lightly on the round board area and vibrating the board e.g. by tapping the fingers of his free hand whereby the figure may be made to appear to perform a dance. <IMAGE>
Patent GB-2096307-A (GB)
Title: Improvements relating to gas fires
IPC: F24C3/00
Filed: 1981-04-08
Abstract: A gas fire comprises a fire bed (20) made of refractory material with a plurality of holes (21) therein, mounted within a combustion chamber so as to divide the combustion chamber into an upper and a lower portion, (10'') and (10') respectively, gas burners mounted so as to direct flames substantially across the upper surface (20') of the fire bed, and a heat exchanger (40) with a primary and secondary section, (42) and (43) respectively, to provide extended circulation of combustion products. Inlet of the heat exchanger is located at the rear wall (11) of the lower portion (10') of the combustion chamber, so that combustion products are drawn through the holes (21) into the lower portion (10') for entry into the heat exchanger. Simulated solid fuel elements (24) are supported on a grid (25) above the fire bed. <IMAGE>
Patent GB-2097126-A (GB)
Title: Indicating the quantities of liquids in tanks
IPC: G01F23/00
Filed: 1981-04-16
Abstract: An indicator for indicating the quantity of petrol in a horizontal cylindrical tank 1 includes a liquid level sensor 2 whose electrical output signal is converted into a signal representative of the quantity of petrol in the tank by using a function comprising a straight line segment approximation of the relationship between quantity of liquid and liquid level in the tank. This signal is indicated by a visual numerical display 20. <IMAGE>
Patent GB-2099478-A (GB)
Title: Trench shoring assembly
IPC: E02D17/08
Filed: 1981-05-29
Abstract: The trench shoring assembly is a development of that described in U.K. Patent Specification No. 1597833. A pair of shoring sheets (1) engage with opposite sides of a trench and are each supported by a respective pair of wheeled jacks (9). Each jack (9) cooperates with a respective rack for raising and lowering the shoring sheets. A ground engaging platform consists of parallel skids 12, one on each side of the trench, each skid carrying a rail on which runs the pair of jacks on that side of the trench. In order to prevent serious trench wall collapse in front of or behind the shoring sheets, a pair of front guard sheets (18) or a pair of rear guard sheets are provided and are arranged to overlap with the shoring sheets (1). A respective stabilizer beam may connect the pair of jacks on each side of the trench to restrict pivotal movement of the jacks. <IMAGE>
Patent GB-2080775-A (GB)
Title: Plastics container and closure device
IPC: B65D55/02
Filed: 1981-06-05
Abstract: The container has an externally threaded neck 14 to which is periphically fused a closure element 18 to seal the contents in the container hermetically. The element has a frangible portion adjacent the fused periphery. A jacking ring 22 is threaded on the neck and has flexible fingers 24 engaged in a groove 26 in the closure element, so that the ring can be twisted to jack off the closure element by breaking of the frangible portion. The fingers flex into engagement with the groove on initial screwing of the ring onto the neck. A lip 30 permits resealing of the container when the jacking ring is screwed back down. The jacking ring may form a closure, Figure 8 (not shown), and be provided with a sealing ring (46). <IMAGE>
Patent GB-2083902-A (GB)
Title: Inflatable articles
IPC: F17C13/00
Filed: 1981-09-15
Abstract: An inflatable article adapted for automatic inflation, for example a life jacket, an inflatable suit, or a life raft, including means 3, 26 for inflating the article with a gas, and a diaphragm 7 for comparing the ambient fluid pressure with the internal gas pressure in a closed flexible compartment such as the internal space of the article and for activating the said inflation means automatically when the ambient fluid pressure exceeds by a predetermined amount the internal gas pressure in the said compartment. <IMAGE>
Patent GB-2109815-A (GB)
Title: Electrodepositing chromium
Inventor: BARCLAY DONALD JOHN
IPC: C25D3/56
Filed: 1981-11-18
Abstract: A chromium electroplating electrolyte containing trivalent chromium ions, a complexant, a buffer agent and organic compound having a -C=S group or a -C-S group within the molecule for promoting chromium deposition. The complexant is preferably selected so that the stability constant K1 of the chromium complex is in the range 10<8> < K1 < 10<1><2> M<-><1>. 
<??>Complexants within this range include aspartic acid, iminodiacetic acid, nitrilotriacetic acid or 5-sulphosalicylic acid. Suitable organic compounds having a -C-S group include thiourea, N-monoallyl thiourea, N-mono-p-tolyl thiourea, thioacetamide, tetramethyl thiuram monosulphide, tetraethyl thiuram disulphide and diethyldithiocarbonate. Suitable organic compounds having a -C=S group include mercaptoacetic and/or mercaptopropianic acid.
Patent GB-2089435-A (GB)
Title: Safety device for connecting together two pressurised hydraulic circuits
IPC: F15B1/027
Filed: 1981-11-19
Abstract: A safety device 1 for connecting together two pressurised hydraulic circuits, has first and second inlets 4, 5 connectable to the two pressurised hydraulic circuits respectively, an outlet 6 connectable to a discharge vessel 7, and manually controlled valve means 11, 12 for controlling the connection of the first inlet 4 to the second inlet 5 and to the outlet 6. The manually controlled valve means are constituted by a three-way valve having a first working position in which the first inlet 4 communicates with the second inlet 5, and a second working position in which the first inlet 4 communicates with the outlet 6 connected to the discharge vessel 7. The device is particularly suitable for connecting a pressurised hydraulic circuit 2 to a hydropneumatic accumulator 3. When the connection between the pressurised hydraulic circuit 2 and the hydropneumatic accumulator 3 is interrupted, the latter becomes automatically connected to the discharge vessel 7. <IMAGE>
Patent GB-2110851-A (GB)
Title: Radiopaging systems
Inventor: LAX ALEXANDER PETER
IPC: H04L1/00
Filed: 1981-11-30
Abstract: In a radiopaging system comprising a plurality of receivers having respective addresses and a transmitter capable of sending paging signals comprising a plurality of successive codewords including at least one receiver address codeword and at least one control codeword, the transmitter in capable also of transmitting an 'all-call' signal for substantially simultaneously alerting some or all receivers, the 'all- call' signal comprising an 'all-call' address constituted by at least one said control codeword (SC,I), and some or all of the receivers comprise means to detect the receipt of a signal comprising the 'all-call' address. Normally a preamble is followed by batches of codewords, each batch being a synchronisation codeword (SC) followed by a mix of address, message and idle codewords. However, in an "all-call" signal, this mix is replaced by a particular sequence of synchronisation and idle codewords (SC,I) forming the "all-call" address each bit of which is represented by SC or I according to its value (Fig 2). Alternatively the mix may be replaced by one SC. <IMAGE>
Patent GB-2092801-A (GB)
Title: Method for Obtaining Installation Plans of an Industrial Plant
IPC: G09B29/00
Filed: 1981-12-23
Abstract: The invention relates mainly to a method for obtaining installation plans of an industrial plant. The method according to the invention consists in first constructing a designing model (A) of the said plant and then photographing at least a portion of the said model to obtain a photoplan resulting from the orthogonal projection of the said model portion on a given projection plane. The planimetric displacements, or in other words, the parallax defects, due to the photographic reproduction are, according to the invention, predetermined and controlled. The model is constituted by superposed and demountable sections, the sections being delimited with respect to one another by continuous or discontinuous parallel levels II, III, IV, V, which may be materialized by transparent flat elements 5, 6a, 6b, 7a, 7b, 8. <IMAGE>
Patent GB-2090140-A (GB)
Title: A process for obtaining a stable freeze point depressed aqueous solution of a dialdehyde
IPC: A01N35/02
Filed: 1981-12-24
Abstract: The present invention relates to a process for obtaining a stable freeze point depressed aqueous solution comprising a dialdehyde and an aliphatic alcohol and/or polyol by adding thereto a catalytic amount of a strong acid. The present invention also relates to a method for liberating the dialdehyde in the aqueous solution by dilution with water and the addition of a catalytic amount of a strong acid.
Patent GB-2098758-A (GB)
Title: Method and system for continuously monitoring and controlling a set of filling posts for gas bottles
IPC: F17C13/00
Filed: 1982-04-20
Abstract: The system comprises a carrousel (200) carrying a plurality of individual filling posts (210), a bottle-entry and data-recording device (100), a weighing device (400), an ejection device (500), and control, calculating and display means (600). It allows, by means of a comparison made subsequently between the actual weight of a filled bottle and the desired weight, on the one hand the follow-up control of each filling post and on the other hand the ejection of those bottles which are empty or under-filled. Furthermore, the measurements given by the weighing device are stored and subsequently reproduced in order to find the total production of each filling post and the production of the set of filling posts. Application to monitoring and control of the filling of bottles for compressed or liquefied gas. The weight is determined before the weigher reaches equilibrium from instantaneous measurements made at intervals of e.g. 100 ms. <IMAGE>
Patent GB-2105948-A (GB)
Title: Method and apparatus for low frequency active attenuation
Inventor: JONES ANDREW
IPC: G10K/
Filed: 1982-08-10
Abstract: PCT No. PCT/GB82/00250 Sec. 371 Date Apr. 11, 1983 Sec. 102(e) Date Apr. 11, 1983 PCT Filed Aug. 10, 1982 PCT Pub. No. WO83/00580 PCT Pub. Date Feb. 17, 1983.A low frequency attenuation method based on the virtual earth system has the driver feeding cancelling waveforms into a partially closed volume which contains the microphone of the virtual earth feed-back loop. The volume preferably has a maximum dimensions which lies between one third and one seventh of the wavelength of the highest frequency to be nulled. An outlet port of the volume can be tuned to the center frequency of the band of frequencies to be nulled.
Patent GB-2135975-A (GB)
Title: A slitting, scoring and perforating arrangement for sheet manipulating apparatus
Inventor: GARRATT PAUL STUART
IPC: B65H35/00
Filed: 1983-02-07
Abstract: An arrangement for slitting, scoring or perforating sheets for use in sheet manipulating apparatus comprises a rotatable blade (100) which co-operates with a rotatable channel (101) to slit, score or perforate a sheet, the blades which perform these functions being interchangeable. The arrangement is movable between an inoperative position away from a roller assembly (57) to (60) and an operative position adjacent the roller assembly. The inoperative position is below the roller assembly and the operative position is such that a sheet emerging from the roller assembly passes to the blade and co- operating channel in a substantially straight line path. The drive pinion (104) for the blade and co- operating channel is arranged to mesh with a roller (98) for the roller assembly when the arrangement is moved to the operative position. <IMAGE>
Patent GB-2117132-A (GB)
Title: Interferometer
Inventor: MOCHIZUKI KIYOFUMI
IPC: G01J9/00
Filed: 1983-03-16
Abstract: An interferometer, characterized by a polarization-maintaining optical fiber (312) for transmitting incident light while preserving planes of polarization in two perpendicularly crossing principal axes, a constant temperature bath (311) for maintaining the polarization- maintaining optical fiber at an arbitrary temperature, and combining means (313) for receiving light emitted from the polarization- maintaining optical fiber to combine components along the two perpendicularly crossing principal axes. An optical path difference is introduced between the 2 polarization states by passage through the fibre, which is proportional to the temp. of the fibre, and therefore the 2 states can be considered to follow 2 independent optical paths, the difference between which can be varied by changing the temp. of the bath. <IMAGE>
Patent GB-2120017-A (GB)
Title: Making printed circuit boards having plated through-holes
Inventor: LUNDBERG WERNER
IPC: H05K3/00
Filed: 1983-05-03
Abstract: A one- or two-sided metal-foil- coated base material 1 is used which, upon production of the hole pattern, is provided in a known manner with a metal layer 3 of desired thickness, said layer covering the surface of the metal foil 2 as well as the hole walls. Subsequently, a masking layer 4 is applied by screen printing a positive image of the desired circuit pattern on the surface(s). The holes are then filled with an ink 7 by means of a screen printing stencil, the ink forming an etch-resistant surface film 70 when dry. After etching, the masking layer as well as the surface film and the hole fillings are removed with a suitable solvent. The screen printing stencil comprises a carrier screen fixed to a frame, said carrier screen being provided on its side facing the surface to be printed with a metal or plastic foil, said screen and foil being provided with holes at locations corresponding to the hole pattern in the base material. <IMAGE>
Patent GB-2123357-A (GB)
Title: A high-stiffness composite constructional element
Inventor: FORSTER ALFRED
IPC: B62D31/02
Filed: 1983-06-07
Abstract: Wall, floor or roof elements for self-supporting omnibus superstructures, comprise of an external panelling (5) which is so connected with an hollow internal metal component (2) by means of a plastics foam layer (6) formed in situ that the external panelling (5) and the internal component (2) have no direct contact with one another (Figure 2). The inner component may be formed from a hollow sheet metal profiles (3), (Figure 3), which are completely filled with foam during the foaming- up of the external panelling, the metal profiles (3) may be channel or hat- shaped in cross-section and the open side may be closed by a covering element (4) in regions where extra strength is required. <IMAGE>
Patent GB-2144186-A (GB)
Title: Disc for disc brake
Inventor: EDWARDS PAUL
IPC: F16D65/12
Filed: 1983-07-07
Abstract: Such disc has axially spaced disc parts (21,22, Fig. 2) interconnected by webs or vanes which guide cooling air from the centre to the periphery of the brake disc, transfer heat from the disc to this air, and mechanically interconnect the brake disc parts to resist the axial thrust due to the brake pads but are shaped to give improved cooling and support. Various shapes of vanes are described e.g. in Figure 1 vanes of W-shape are shown with different arrangements of gaps 25,26 and apertures 29,30, and Figure 6 shows further alternatives. Holes 24 may be formed in the braking surfaces of the disc parts. <IMAGE>
Patent GB-2126804-A (GB)
Title: Insulating parts of electric machines
Inventor: OTTY MALCOLM
IPC: H02K3/38
Filed: 1983-09-02
Abstract: Joints (31) in and terminal parts of coils and conductors of rotating and other electric machines are insulated by applying a tube (11) of compressible material capable of absorbing resin and surrounded by a heat shrink sleeve (12) which is then heat shrunk to compress the tube. <IMAGE>