baber/WOPTO huggingface dataset:
Patent GB-1438658-A (GB)
Title: System for analysing video signals
IPC: G06V10/28
Filed: 1972-08-24
Abstract: 1438658 Image analysing IMAGE ANALYSING COMPUTERS Ltd 13 Aug 1973 [24 Aug 1972] 39504/72 Heading G4D For analysing its features, a field 10 is viewed by a television camera 20, the video output of which is converted to a two state signal by a thresholding device 32 and sampled in synchronism with the scanning signals at 36, the sampled signals being applied to a plurality of delay circuits 38 to provided variously delayed versions of the signals, at least two signals being compared at 52 and a count being recorded at 54 when they have a specified relationship. In an alternative circuit (Fig. 2, not shown) the comparator 52 compares one of the delayed signals from the delay circuits 38 with a signal derived from a second thresholding device (32<SP>1</SP>); with this arrangement a count can be recorded whenever one grey level is separated by a given distance from a second grey level.
Patent GB-1484295-A (GB)
Title: Insulated gate capacitor
IPC: H01L29/94
Filed: 1974-09-11
Abstract: 1484295 MIS capacitors MOTOROLA Inc 11 Sept 1974 [29 Oct 1973] 39664/74 Heading H1K In a capacitor comprising a semi-conductor body of one conductivity type with an insulated gate electrode thereon, part of the edge of which abuts a main source region of the opposite conductivity type so that application of a gatesource bias voltage in excess of the inversion threshold voltage causes formation of an inversion layer in contact with the source region, controllable means are provided for either linking the source region additionally to the inversion layer at another part of the edge of the gate electrode or linking it to an auxiliary source region overlapped by another part of said edge. In the Fig. 1 embodiment part of source region 25 abuts one edge of gate electrode 22 while parts 16, 18, 20 can be connected to the other edges of the inversion layer under electrode 22 via drain regions 40, 42, 44 by application of voltages in excess of the inversion threshold to gate electrodes 26, 30, 34 respectively. The high frequency capacitance can thus be increased stepwise on account of the consequential reduction in the effective distance of the remoter parts of the inversion layer from the source region. Self-alignment is achieved by using the gate electrodes, e.g. of doped polysilicon, aluminium or molybdenum, and underlying oxides and the thicker field oxide, which is also present in areas 46, 48, 50 as masking in the diffusion to form source and drain regions. The capacitor is useful in A to D and D to A converters and digitally controlled frequency oscillators, and P and N channel types may be integrated into a single chip. In the other embodiment (Fig. 3, not shown) for use in boot-strapped inverter and decoder circuits the main source region borders one side of a square gate. A floating auxiliary source region bordering the remaining sides is separated from the main source by small gaps which underlie extensions of the gate electrode and are thus bridged by the inversion layer when the gate bias reaches the appropriate value.
Patent GB-863509-A (GB)
Title: Alpha-mercaptoisobutyric acid
Inventor: GALIMBERTI PAOLO
Filed: 1957-12-24
Abstract: Alpha-mercapto isobutyric acid and a uracil having the general formula: <FORM:0863509/IV (b)/1> are prepared by refluxing, with water or a dilute aqueous mineral acid, an alpha-(4-hydnixy-2-pyrimidyl mercapto) isobutyric acid of the general formula: <FORM:0863509/IV (b)/2> wherein R1 and R2 are the same or different and each represent a hydrogen atom, a C1-8 alkyl group or an aryl radical, and separating the resulting mercapto-isobutyric acid from the reaction mixture, for example, by cooling filtering to remove the uracil and then either ethereally extracting the filtrate, or steam distilling the filtrate and extracting the desired acid with ether.  In examples, pyrimidyl mercapto isobutyric acids are used wherein R1 and R2 are both hydrogen or both methyl, or R1 is hydrogen and R2 is methyl, ethyl, propyl, butyl or phenyl, or R1 is methyl, ethyl, propyl, butyl or phenyl and R2 is hydrogen or R1 is ethyl and R2 is methyl, which are refluxed in water or aqueous Hl.
Patent GB-921188-A (GB)
Title: Improvements in hatch covers
IPC: B63B19/203
Filed: 1961-11-09
Abstract: 921,188. Hatch covers. VON TELL TRADING CO. A.B. Nov. 9, 1961 [Nov. 9, 1960], No. 40116/61. Class 113. In a hatch cover having at least two cover sections 2, 3, 4 hinged to each other at 6, 7 the first section 2 being attached to the coaming 1 by a hinged shaft 9, the second section 3 being swingable so that the underside of the sections 2, 3 turn towards each other, and catch means 21-22, 25-26 retaining the first section in raised position and the second section against the first, the hinge shaft comprises coaxial and horizontal bolts 36 on the first section guided in vertical notches 37 in fittings 38 on the hatch coaming (or vice versa) and the first section has beyond the hinge shaft supports 40 which rest against abutments 41 on the coaming before the first section is completely raised. A piston 15 on section 3 compresses a spring 14 on section 2 when the rope 30 is hauled to uncover the hatch so that the cover sections are urged apart for the covering operation.
Patent GB-1526999-A (GB)
Title: Boron nitride articles
IPC: C04B35/583
Filed: 1976-09-28
Abstract: 1526999 Hexagonal boron nitride MOSKOV KHIMIKO-TEKHNOL INST IM DI MENDELEEVA 28 Sept 1976 40164/76 Heading C1A [Also in Division B5] Articles of hexagonal boron nitride are made by mixing a finely divided powder of hexagonal boron nitride with a boron-nitrogen containing composition, especially one comprising boric acid and urea, and compression moulding the resulting mixture into blanks at a temperature of from 80‹ C. to 160‹ C. under a pressure sufficient for penetration of a melt of said composition into the pores of the blank to fill the pores, and heating said blank in ammonia to a temperature of from 1000‹ C. to 1400‹ C. followed by calcination at a higher temperature in an inert atmosphere. The starting mixture may contain 60-90% by weight hexagonal boron nitride and 40-10% by weight of the composition, which may incorporate boric acid and urea in a ratio by weight of from 1:1 to 1:3. Suitably the specific surface area of the hexagonal boron nitride is from 20 to 300 m<SP>2</SP>/g and the starting mixture may be compression-moulded under a pressure of from 0À25 to 1À0 metric tons/cm<SP>2</SP>.
Patent GB-1274102-A (GB)
Title: Improvements in earthworking machines
IPC: E02F3/32
Filed: 1969-08-12
Abstract: 1,274,102. Scoop-arm machines. POCLAIN. 12 Aug., 1969 [5 Sept., 1968], No. 40290/69. Heading E1F. An earthworking machine comprises an earthworking implement 11 pivotally connected to a pivotally mounted jib 1 by two pairs of arms 5, 6 and. 13, 14 which form a deformable quadrilateral operated by rams 7, 8. In a second embodiment, Figs. 3 and 4 (not shown), the quadrilateral is connected to the jib by a member which is pivotable in a vertical plane by a ram. In a third embodiment, Figs. 5, 6 and 7 (not shown), which is similar to that shown in Figs. 1 and 2, the arms 5, 6 are shorter than the arms 13, 14. More than one deformable quadrilateral may be provided.
Patent GB-1304234-A (GB)
IPC: B23G1/46
Filed: 1970-08-21
Abstract: 1304234 Tapping attachment TAPMATIC CORP 21 Aug 1970 [9 April 1970] 40345/70 Heading B3N A tapping attachment comprises a tapping spindle 18 having free axial float, a direct drive clutch member 132, a reverse drive clutch member 134 and an adjustable collar 262 for adjusting the amount of freedom of axial float of the spindle; the amount of relative axial movement of the spindle required for changing between direct drive and reverse drive being determined by the adjustment of the amount of freedom of axial float. The clutch members drive the spindle through pins located in the spindle and are driven themselves by drive gears 126, 128. Reverse drive gear 128 is driven by direct drive gear via planetary drive gears (82), (84) (85) Fig. 4, (not shown), and a lower support member 220. Body 26 is screwed onto a tool arbor 11 and serves to drive direct drive gear 126. The drive clutches are spring biased, springs 206, 260, to allow them to engage and disengage the tapping spindle without chattering. Cage 68 on which the planetary gears are mounted is keyed to housing 30.
Patent GB-943359-A (GB)
Title: Improvements relating to suction feed mechanism for corrugated and like cardboard
Inventor: BISHOP THOMAS DESMOND
IPC: B65H3/12
Filed: 1961-11-11
Abstract: 943,359. Feeding sheets. DERITEND ENGINEERING CO. Ltd. Oct. 22, 1962 [Nov. 11, 1961], No. 40446/61. Heading B6B. Apparatus for separating corrugated cardboard blanks b sequentially from a stack comprises a reciprocating suction box f which is accelerated to feed each blank to a pair of feed rollers at a speed substantially equal to the peripheral speed of the rollers and to maintain that speed for a short time during which the box f is cut off from the suction source and vented to atmosphere, thereby permitting a smooth take-over by the feed rollers. The stack of blanks b is supported on a table a, a<SP>l</SP> having a gate e, and the front end of the bottom blank b<SP>1</SP> is grasped by the box f and fed into the feed rollers, which are of reduced diameter g<SP>2</SP>, g<SP>3</SP> opposite the box to allow the latter to pass a short distance between the rollers. The box f is carried by a hollow ram d which is reciprocated by cam means in a fixed cylinder h mounted beneath the table a. A port d<SP>1</SP> in the ram d first registers with a suction port h<SP>2</SP> in the cylinder, and subsequently registers with an atmospheric port h<SP>3</SP> to release the blank to the speed rollers. A plate a<SP>2</SP> attached to the box f slides over the flat top of the cylinder h and assists in supporting the stack. The lower feed roller may be longitudinally grooved, and both rollers have a rubber or like covering. Specification 546,167 is referred to.
Patent GB-851819-A (GB)
Title: Lithographic plate and process of preparing the same
IPC: G03F7/016
Filed: 1958-12-16
Abstract: 851,819. Photomechanical printing plates, producing. LITHO CHEMICAL & SUPPLY CO. Inc. Dec. 16, 1958 [May 22, 1958], No. 40620/58. Class 98(2) At least one surface of an aluminium plate is rendered hydrophilic by either a silicating or an anodizing process, sensitised with a solution constituted of a hydro-alcoholic solution of the water-soluble condensation product of p diazodiphenylamine and formaldehyde, superpolyamide nylon resin and a non-ionic surface active agent, image-wise exposed by ultra-violet light, treated with a lacquer constituted of a pigmented organic solvent containing a furfuryl-alcohol condensate and an epexy resin which is a condensation polymer of epechlorhydrin and _biophenol, and developed with a solution of gum arabic and phosphoric acid to remove unexposed areas of the light-sensitive coating and result in a lithographic plate. An example provides all details of operation and the developer as so detailed is included within the terms of the invention. U.S.A. Specification 2,826,501 is referred to.
Patent GB-1274907-A (GB)
Title: A method of and an apparatus for continuously producing vulcanisable mixtures
Inventor: FRITSCH RUDOLF PAUL
IPC: B29C48/405
Filed: 1969-08-14
Abstract: 1,274,907. Screw mixers. R. P. FRITSCH. 14 Aug., 1969 [14 Aug., 1968], No. 40694/69. Heading B1C. [Also in Division B5] A single or multiple-intermeshing screw mixer or extruder has two inlets 1, 2 and a controllably variable throttling section 4 which generates back-pressure in a zone extending upstream at least as far as the downstream edge of the inlet 1. In operation the screw(s) are rotated at a constant speed and the primary component is fed ad lib to the inlet 1 and will be taken up at a rate dependent on the back pressure. Conventional means (not described) are provided to meter other mixture components into the inlet 2, downstream of the throttling section 4, in dependence upon the rate of introduction of the primary component. As shown a slide 6 enables both the throttling section 4 and the position of the downstream edge of the inlet 1 to be adjusted. There are cavities 8 for a heating or cooling medium. The principal component in the form of slabs may be fed by a vacuum lift and cutter both photo-or electrically - controlled. Multiple screws are preferably co-rotating.
Patent GB-1204792-A (GB)
Title: A safety helmet and a flexible beading element
Inventor: FRIEDER LEONARD PETER
IPC: A42B3/10
Filed: 1968-01-18
Abstract: 1,204,792. Safety helmet. L. P. FRIEDER. 18 Jan., 1968 [6 Feb., 1967], No. 40791/69. Heading A3V. [Also in Division B5] A safety helmet comprises a rigid shell fitting over a human head and having an open bottom defined by a continuous bottom edge to which is attached a beading element 35 (see Heading B5K) comprising a U-shaped channel portion receiving said edge and, secured to one side of the U by a web, a cylindrical portion which cushions any contact between the head and the helmet edge.
Patent GB-1476237-A (GB)
Title: Support structure in gas turbine engines
IPC: F01D11/02
Filed: 1975-08-15
Abstract: 1476237 Gas turbine engines - arrangement of seals ROLLS-ROYCE (1971) Ltd 15 Aug 1975 [19 Sept 1974] 40829/74 Heading F1G and FIT The invention relates to a seal structure for a gas turbine engine in which the stationary part of the seal is supported from the turbine shaft by means of a stationary panel supported on the shaft by means of a bearing. The turbine assembly shown is the HP turbine of a gas turbine engine, the turbine comprising a rotor disc 24 carrying blades 7 and connected to a shaft 14 rotatably supported in bearings (15), (16) Fig. 1 (not shown). The assembly comprises also inlet guide vanes 6 carried by stator structure 43, 28. A bearing assembly 20 is mounted on the shaft 14 and carries a stationary panel 21 comprising a frusto-conical portion and a radial web 26 which carries at its periphery a piston ring type seal 27 which engages the stator structure 28, the frictional contact serving to prevent rotation of the panel 21. The radial web 26 of the panel 21 carries a flange member 22 which carries the stator portion 25 of a seal, the rotary portion 23 of the seal being carried by the turbine rotor disc 24. The radial web 26 is formed with openings 35, 40 through which cooling air supplied through passage 34 flows as indicated by the arrows. Some of the air flowing through openings 35 flows radially inwardly across the surface of the rotor disc 24, through openings 42, through the central opening of the rotor disc to the downstream side of the disc; a second portion of air from the openings 35 flows radially outwards through passages 36 in the rotary seal member 23 to the chamber 37 thence through passages 39 in the rotor blades 7. Cooling air flowing through the openings 40 enters the chamber beneath the blade platforms 30, the air passing from there through passages 41 in the rotor blades.
Patent GB-1421977-A (GB)
Title: Methods of and devices for continuously wrapping collections of articles in thermo-shrinkable plastics film
IPC: B65B9/02
Filed: 1973-08-31
Abstract: 1421977 Shrink-wrapping apparatus; endless chain conveyers LARA SA 31 Aug 1973 [4 Sept 1972 25 Sept 1972] 41102/72 Headings B8C and B8A [Also in Division B5] In a shrink-wrapping apparatus wherein articles or collections of articles P are loosely wrapped in heat-shrinkable plastics films 12, 14 supplied from upper and lower reel handling devices 13, 15, the wrappers are heat-shrunk as the wrapped articles P are conveyed along an ascending path and are cooled during conveyance along a descending path. In operation articles P are transferred from a conveyer 16 by a pusher 17 on to a fixed feed fork FC to overlie the lower plastics film 12 and to be picked-up with the plastics film 12 by a respective one of a plurality of trays 2, each of which is articulated between opposed conveyer chains 1. As each article P is pick-up by a tray 2, a loop forming device 10 forms an upwardly directed loop 11 of slack film between successive articles P. The trays 2 convey the articles into a wall of film constituted by the lower and upper films 12, 14 welded together at their ends. The upper film 14, thus drawn over an article P, and the loop 11 of lower film 12 are then welded and severed behind each article by welding and severing jaws 36, 37 which are movable towards and away from each other along an oscillating arm 35. The loosely wrapped articles are conveyed through a heat-shrink tunnel having a horizontal preheating zone Z1, an ascending heat shrinking zone Z2 and a horizontal upper finishing zone Z3. The hot air in the zones Z1, Z2 and in the zone Z3 is re-cycled by respective blower and suction assemblies 24, 28 which withdraw the hot air from the ceilings of the zones Z2, Z3 via ducts 129, 132 and introduce it into chambers which contain lateral groups of finned resistance heaters and have perforations through which the hot air is introduced to the zones Z1, Z2, Z3. A cooling assembly 32 above the descending path feeds jets of cold air on to the heat-shrunk wrapped articles which are eventually deposited on a fixed discharge fork FD. Each tray carries a pair of rollers G1 at its rear end and two pairs of rollers G, G mounted on the ends of crank arms which are fixed at their opposite ends to a rod by which the tray is articulated to the chains 1. The rollers G and G1 co-operate with rails throughout the conveyer path to maintain the trays in a horizontal condition.
Patent GB-1510758-A (GB)
Title: Method and apparatus for the treatment of fibrous suspensions
IPC: D21B1/32
Filed: 1976-10-05
Abstract: 1510758 Centrifugal separation; comminuting apparatus J M VOITH GmbH 5 Oct 1976 [30 Oct 1975] 41182/76 Headings BID B2A and B2P  A suspension of fibrous material, e.g. cellulose or paper, to be purified is fed at 1 under pressure to an inlet chamber 2 of a casing in which a rotor 4 having orifices 3 is arranged for rotation; the suspension then passes through these orifices into the interior of a peripherally-imperforated drum 5 open at one end and arranged coaxially with and about the rotor 4 for rotation therewith. The rotor and drum are rotated to create a vortex 6 within the drum so as to cause heavy impurities in the suspension to move radially outwardly towards the inner surface of the drum and lighter impurities to collect in the central region of the vortex; the heavy and lighter impurities and the rest of the suspension are discharged from the open end of the drum; the heavy and lighter impurities are removed from the casing; the direction of flow of the rest of the suspension is reversed at its discharge from the open end of the drum so as to cause such suspension to flow through a filter zone 8 defined between the outer peripheral surface of the drum 5 and a filter 10 arranged coaxially with, and encircling, the drum; purified suspension which passes through the filter is removed from the casing; and impurities unable to pass through the filter are conveyed back to the inlet chamber 2. The rotor 4 may be provided with a vortex stabilizing and centering ring 21. The lighter and heavy impurities are removed from the casing through outlets 7 and 9 respectively which are fitted with closure means 18, 19 intermittently openable or controllable by the amount of impurities flowing out or by the pressure prevailing in the casing. Purified suspension is removed through an extraction outlet 11 while impurities which do not pass through the filter 10 are conveyed by obliquely disposed or helical vanes 12 on the drum towards the inlet chamber into which they are fed back by means of an annular member 13 rotating with the drum. Any large fragments in the suspension are broken down by devices 14, 15, e.g. cutters or perforated discs, mounted on the member 13 and the casing respectively. An annular chamber 16 having an outlet 17 may be provided adjacent the devices 14, 15 for collecting fragments which necessitate further breaking down.
Patent GB-1403956-A (GB)
Title: Conveyor with a cover assembly
IPC: B65G69/18
Filed: 1973-09-04
Abstract: 1403956 Covered conveyers BRIDGESTONE TIRE KK 4 Sept 1973 [11 Sept 1972 (2)] 41405/73 Heading B8A Conveyer cover-plates 1 have depending legs 2 connected to brackets 4 on the conveyer by removable pins 5. The pins may be provided with detents (10, Fig. 4), in which case the brackets and legs are keyhole shaped. Alternatively the pins may have enlarged resilient heads (Fig. 5). The plates may be overlapped.
Patent GB-972172-A (GB)
Title: Coulometric reagent generator
Inventor: LEONARD JOHN DEWARD
IPC: G01N27/44
Filed: 1962-11-02
Abstract: <PICT:0972172/C6-C7/1> In coulometric titration, the reagent is generated in an external cell, and then flows to the titration unit from an electrode zone surrounded by porous element, to avoid disturbing gas reactions due to the electrodes.  A suitable apparatus comprises a feed tube 24 through which an electrolyte, e.g. Na2SO4 solution, flows into a cell filled with a uniform glass wool packing 48 through which the electrolyte is distributed uniformly.  The acid and alkali products formed at the electrodes 32, 34 flow down trough-shaped drain guides 14, 16 to delivery taps 18 and 20.  At low voltage operation and at low flow rates, gases generated at the electrodes escape freely, and the outer surface of the drain guides 14, 16 are open to the air allowing any dissolved gas to escape.  The two streams may be used for independent titrations, the quantity of reagent required to reach the "end-point" being measured by the quantity of electric power used.  Instead of acid/base generation, silver ions can be generated using a silver anode and an acetate buffer solution as electrolyte.  Potassium iodide and other salts are also referred to. In modifications, the glass wool packing is replaced by a pair of porous diaphragms of glass frit, within which is mounted metal gauze or a coiled Pt wire electrode spring-pressed against the diaphragms which are more porous on the remote faces to assist escape of gases. The drain tubes are preferably of a wettable material, e.g. P.V.C., and the casing of a non-wettable material, e.g. P.T.F.E. or polythene. The reagents flowing down the drain tubes may be washed down by inflowing a supplementary stream of pure water; and a purging gas may be admitted, e.g. N, to prevent oxidation.  In other forms, two electrode spaces are formed for two electrolytes, one of which may be a non-treated electrolyte, and a differential hydrostatic pressure is maintained to provide different rates of out-flow of reagents generated.