baber/WOPTO huggingface dataset:
Patent GB-716761-A (GB)
Title: Improvements in or relating to drill assemblies
IPC: E21B10/66
Filed: 1952-11-06
Abstract: 716,761. Earth-boring apparatus. STANDARD OIL DEVELOPMENT CO. Nov. 6, 1952 [Jan. 29, 1952], No. 28019/52. Class 85. Secured to the lower end of a rotatable string of drill pipe or casing is a collar 1 adapted to receive a drill which is passed through the drill string, the bore of the collar being formed with grooves 4, 5 and an outward taper 3. The drill consists of a mandrel 8 having spring-biased latches 30 at the upper end, a tapered lower end and two or more, preferably three, longitudinal grooves. In each groove slide a member 13, 14 having a spring-biased latch 6 at the upper end and, at the lower end a flexible suspension arm 15 on which is pivotally mounted a cutter support. To remove the drill from the operating position, as shown in Fig. 1, a spearhead is lowered down the drill string to contact latches 30 and disengage and maintain them clear of the groove 4 and the interior of the drill string. The spearhead is then raised, so drawing up the mandrel 8 to thus remove the tapered lower end of it from out of contact with the cutter supports. The members 13, 14 remain stationary with respect to the collar owing to the frictional engagement of the latches therewith until abutments 24, 26 on the mandrel engage abutments 23, 25 on said members 13, 14. Subsequent upward movement of the mandrel results in withdrawal of the drill through the drill string. The abutments 23, 25 are disposed at different distances from the upper ends of members 13, 14 respectively so that the members 13, 14 start to move upwards in a controlled sequence. To set the drill, it is lowered through the string. Latches 6 move out into the groove 5 to prevent further downward movement of the members 13, 14 whilst the mandrel 8 continues to move downwards until its tapered nose has wedged the cutter supports against the taper 3 of the bore of the collar. At this point latches 30 move out into grooves 4 to prevent upward movement of the drill when the weight of the drill string is transferred to the cutters to rotate them. In a modified form the latches 30 have an adjustable mounting on the mandrel, the mounting being used to set a packer sleeve when the drill is in position. A single groove of suitable dimensions may replace the grooves 4. 5.
Patent GB-748482-A (GB)
Title: Improvements in or relating to alternating current switching devices comprising gas-discharge tubes
Inventor: HARTLEY GEORGE CLIFFORD
IPC: H01J17/00
Filed: 1950-11-16
Abstract: 748,482. Automatic exchange equipment. STANDARD TELEPHONES & CABLES, Ltd. Nov. 9, 1951 [Nov. 16, 1950], No. 28046/50. Class 40 (4). [Also in Group XL (c)] An alternating current switching circuit comprises a gas discharge tube having a priming gap and two other gaps so that when the priming gap discharges the other gaps fire and are sustained by D.C. provided to them so that an A.C. signal will pass between two 2-wire transmission circuits which are connected respectively to anodes and to cathodes of a pair of the gaps. Fig. 1 shows a switching circuit comprising a multi-gap gas discharge tube which is fired by impressing a triggering voltage on leads X, Y across the priming gap CG. Gaps G1, G2 subsequently fire and are sustained by the D.C. supply across the mid-points of repeater coils 1RC, 0RC to complete an A.C. circuit from the 2-wire transmission circuit at " Inlet A " to that at " Outlet B ". In a modification, Fig. 2 (not shown), a series of gas tubes are used so that a single incoming 2-wire transmission circuit which is multipled to all of the tubes may be connected to any one of a series of outgoing circuits which are connected each to one of the tubes. Fig. 3 shows a further modification in which by applying a priming voltage between lead X1 and a given one of leads Y1 ... YN the incoming transmission line at " Inlet 1 " may be connected to a given outgoing line " Outlet 1 " . . . Outlet N ". If the priming voltage is applied between lead X2 and a given one of leads Y1 ... YN the incoming transmission line at " Inlet 2 " may be connected to a given outgoing line " Outlet 1 " . . . Outlet N ". By the provision of additional gaps in the discharge tubes, 4-wire transmission line switching may be provided.
Patent GB-1188514-A (GB)
Title: Improvements in or relating to the Automatic Phase Control of Oscillators
Inventor: MORTLEY WILFRID SINDEN
IPC: G01S13/26
Filed: 1966-06-23
Abstract: 1,188,514. Automatic phase control systems. MARCONI CO. Ltd. 12 April, 1967 [23 June, 1966], No. 28087/66. Heading H3A. A swept frequency oscillator 1 is locked in phase to a continuous wave reference frequency supplied to terminal 6, by means of a phase comparator 5 the output of which is filtered and used to control the oscillator frrquency during the period between the sweeps. In Fig. 3 the frequency sweep is controlled by a pulse generator 2 which is also connected through delay means 8 to open a gate 7 and which feeds a frequency divider 3 controlling an output gate 4. If the sweep recurrence frequency is high enough, the units 7 and 8 may be omitted, Fig. 3 (not shown). The error signal from the filter 9 may be used to control a reference voltage applied to a doide which controls the oscillator frequency during the period between sweeps. In a modification, Fig. 5 (not shown), the output of the phase discriminator 5 passes to a low pass filter followed by a high pass filter feeding a detector (Fig. 6 not shown) adapted to detect the difference between positive and negative peak voltages, the detector output controlling the oscillator 1. The system may be employed in radar systems of the pulse compression, moving target indicator, or pulse-Doppler types.
Patent GB-1310443-A (GB)
Title: High alumina bodies maturing below 1500 c
IPC: C04B35/111
Filed: 1970-06-10
Abstract: 1310443 Ceramic frit MINNESOTA MINING & MFG CO 10 June 1970 [19 June 1969] 28208/70 Heading C1J A ceramic frit maturable to a ceramic by heating to 1350-1500 C. is derived from a mix containing 80-97 wt. per cent alumina (less than 3Á size), and the remainder comprising optionally up to one third MgO (less than 3Á size) and SiO 2  and CaO in the wt. ratio 5 : 1 to 3 : 5 or equivalent proportions of a compound decomposable to CaO, e.g. CaCO 3 . This mix is prereacted and calcined at 1100-1200 C. for 2-5 hours, then ground to a particle size range of 0À5 to 10Á. At least a portion of the SiO 2  and CaO should be present as anorthite and/or gehlenite, and a portion of any MgO present should be a spinel.
Patent GB-354594-A (GB)
Title: Safety glass bell for electric mining lamp
IPC: F21L4/00
Filed: 1930-09-22
Abstract: 354,594. Miners' electric lamps. EILENBERGER, R., Bernsdorf, Germany. Sept. 22, 1930, No. 28246. [Class 75 (ii).] In a miners' electric lamp the bulb f is protected by a glass bell a the inner surface of which is formed with closely adjoining and fine flutes b arranged longitudinally. The bell may be ground on its inner fluted surface and its outer surface may be formed as an annular lens c. The bell may be cylindrical, or its lower part g may be extended to accommodate a large lamp socket e.
Patent GB-809303-A (GB)
Title: Improvements in or relating to divider plates for furnaces
IPC: F27B7/20
Filed: 1956-09-17
Abstract: Corrugated dividing plates to prevent crustation of granular materials within a furnace are composed of heat-resistant alloy containing:- 20 to 40 per cent chromium, 10 to 20 per cent nickel, 0.20 to 0.40 per cent carbon and the remainder iron.
Patent GB-461094-A (GB)
Title: Improvements relating to fasteners for connecting glass plates
IPC: F16B5/02
Filed: 1936-09-24
Abstract: 461,094. Bolting. QUINN, D., and QUINN, F. Sept. 24, 1936, No. 28400/35. [Class 89 (i)] A rod 1 for connecting or securing glass or similar plates a, b has a flanged nut screwed to its end, the body of which forms a sleeve 2 entering a hole in the plate. The opposing face of the plate is held by the member 4 supported by the nut 5. Both the nut and the supporting member are formed with recesses 7, 8.
Patent GB-298139-A (GB)
Title: Improvements in or relating to the manufacture of inner tubes for tyres and other hollow articles
IPC: B29D23/24
Filed: 1928-10-03
Abstract: 298,139. Fawick, T. L. Oct. 3, 1927, [Convention date]. Moulding hollow rubber articles.-Endless rubber &c. tubes, e.g. inner tubes for tyres, and other hollow articles are formed by forming a sheet of plastic material to form a cylindrical ring, holding the margins and deflecting the central part of the ring radially and then holding the central part in deflected position and moving the margins together. Fig. 15 shows a tube formed by drawing a sheet of rubber into an annular mould and bringing the edges 6 together at the outer periphery. Fig. 17 shows a modification in which the edges are brought together on the inside. A machine for producing tubes as in Fig. 15, comprises a flexible, pervious mould 66, Fig. 2, carried by members 41, 51 which are rotatable about a hollow, fixed shaft 33 and are slidable thereon. The members 41, 51 are interconnected by levers to move in unison and are normally separated by compressed air in cylinders 76 acting through pistons 82. The chamber formed of the members 41, 51, 66 is adapted to be connected to vacuum through ports 124, the hollow shaft 33 and a valve 125. In operation the members 41, 51 are separated by compressed air admitted through a passage 114, valve 118, tube 122 and spider 56, and rotated by gearing. A sheet of plastic rubber is laid on the member 66 to form a cylinder, and after severing the sheet and joining the ends, the rubber is drawn into the mould 66 by moving a lever 115 to open vacuum valve 125 and close pressure valve 118. The pressure in the cylinders 76 is relieved through a valve 88. As the members 41, 51 approach each other, the flexible member 66 and the rubber are drawn into a tubular shape as shown in Fig. 11, the edges of the sheet being finally pressed together and excess severed by a cutting-member 70 engaging an abutment 71. Fig. 12 shows the completed tube. furnished with a valve stem 3 which may be located by a member 130, Fig. 5, during the formation of the tube. The member 130 connects with a tube 132 through which powdered talc &c. is blown into the tube prior to its removal. As shown in Fig. 2, a pair of mould chambers are provided and are rotatable about a pedestal 39 to bring an empty mould into position for discharge. The Specification as open to inspection under Sect. 91 (3) (a) describes also the production of annular tubes by deforming annular sections by suction and uniting the sections. Fig. 18 (Cancelled) shows a tube formed of two sections united by diametrical seams 11, 12, the sections being produced from sheets deformed in suction moulds 16, 17, Fig. 19, (Cancelled). Fig. 20, (Cancelled) shows a modification wherein a sheet 29 is first deformed and is then united with a cylindrical sheet 27 at seams 28. This subjectmatter does not appear in the Specification as accepted.
Patent GB-1094476-A (GB)
Title: Methods and apparatus for scanning electroluminescent panels
Inventor: ACTON JOHN REGINALD
IPC: H05B44/00
Filed: 1963-07-18
Abstract: An electroluminescent panel comprises a substrate supporting electroluminescent material and two sets of conducting strips, one on each side of said electroluminescent material, the strips of one set crossing the strips of the other set to define an array of separately energizable elements of said electroluminescent material, a set of gate circuits, such as active thin film triodes, one for each strip of one of said sets, and delay means such as a series of lumped delays, one for each strip of the respective set of strips, for triggering said gate circuits sequentially to permit a supply voltage applied to said gate circuits to be applied in sequence to the strips of said one set, and in which said gate circuits and said delay means are formed by deposition on a margin of said substrate. Preferably, the panel comprises a further set of gate circuits and delay means utilized as above but in conjunction with the other set of strips. The lumped delays may each comprise an R.C. circuit deposited by evaporation on to the substrate margin or alternatively a ring counter comprising a plurality of active devices having one counting element for each strip of the respective set.  Preferably all connections are formed by metallic evaporation on the margin.
Patent GB-986044-A (GB)
Title: Process and composition for phosphatizing metals
Inventor: VULLO WILLIAM JOSEPH
IPC: C23C22/03
Filed: 1963-07-18
Abstract: A phosphating composition for the surfaces of metals, such as Fe, Al, Zn, Mg, Cd or alloys thereof, comprises 65-98% of a chlorinated hydrocarbon such as C2HCl3, C2Cl4, C2H2Cl4, C2H3Cl3, C2H4Cl2 or CH2Cl2, 0.1-6% of orthophosphoric acid, 1.5-35% of a solvent capable of dissolving the acid in the chlorinated hydrocarbon, such as an aliphatic or alicyclic alcohol containing 1-18 carbon atoms, e.g. n-butanol, and 0.01-6% of an organonitro compound which may be aliphatic, e.g. nitro-methane, -ethane, -urea, -guanidine, and/or aromatic, e.g. (di)nitrobenzene. Compounds substituted with Cl, OH and/or COOH groups may be used, such as 1-chloro-4-nitrobenzene, p-nitrophenol, o-, m- or p-nitrobenzoic acid or picric acid.  A comparative example is specified with the organonitro compound replaced by dibutylphthalate. Numerous alcohols are specified together with other solvents such as halogenated alcohols, polyols, alkyl acetates, e.g. ethyl or amyl, amides, e.g. dimethyl formamide/acetamide, dioxane, polyalkylene oxide glycol ethers, e.g. cellosolves or carbitols, ketones, e.g. acetone, and dialkyl sulphoxides, which may be used in place of or with the alcohol solvent. Numerous stabilizers are specified for unstabilized chlorinated hydrocarbons (see Specification 984,612).  The comopsition may be initially treated with powdered iron or other metal being treated, e.g. between 0.01% and 0.1% by weight of the composition, prior to contacting the degreased steel or other metal surface with the composition, e.g. by immersion or spraying.
Patent GB-691274-A (GB)
Title: Process for the production of cyanuric halides
Filed: 1950-11-22
Abstract: <PICT:0691274/III/1> Cyanuric halides are produced by the polymerization of cyanogen halides in the gaseous phase in the presence of active carbon as catalyst.  The cyanogen halides are preferably free from hydrocyanic acid, cyanic acid and water vapour. In an example of continuto produce resinous ous operation pure cyanogen chloride is introduced into an iron contact furnace at 350-400 DEG C, filled with beech wood charcoal which had been activated with steam at 800-1000 DEG C.  The vapours are fed to an aluminium condensation chamber from which the solid crystalline product is removed.  The catalyst is preferably renewed during the process as shown in the Figure where active carbon from a hopper 1 is periodically or continuously passed through reaction tubes 2 and removed at 4. Cyanogen halide enters at 5 and the cyanuric halide recovered in the condenser 6.  Specifications 602,816 and 674,813 are referred to.
Patent GB-893059-A (GB)
Title: Melt spinning process and apparatus
Inventor: DAVIE PETER
IPC: D01D1/06
Filed: 1959-08-21
Abstract: <PICT:0893059/IV (a)/1> <PICT:0893059/IV (a)/2> <PICT:0893059/IV (a)/3> A melt-spinning apparatus comprises a polymer melting zone, a pump, e.g. a gear pump or screw extruder, a spinning pack containing an inlet duct for molten polymer, a filtration medium, e.g. sand, arranged above and separated from an extrusion die or spinneret, and means for imparting a transverse circulatory motion to the incoming polymer stream, located in the region between the polymer melting zone and the top surface of the filtration medium. A transverse circulatory motion is a disturbance of the melt stream such that individual stream lines, normally moving in lines parallel to each other and with the duct walls change their form into a helical shape so that they now move in a sideways motion down the duct.  Said means may be located in the duct leading the melt from the gear pump to the filtration medium, and may comprise a rotor driven either by the flow of melt, or mechanically, e.g. from within the gear pump, or from a separate drive shaft.  A drive from within the gear pump is preferred, and the rotor may consist of a rotatable duct or paddle driven either by direct coupling with an end of a rotating shaft within the pump or by direct contact with one of the gears of a gear pump.  Preferably, (Fig. 2) the rotor is a gear wheel 3 in positive engagement with one of the gears (1, 2) of the gear pump.  The rotor gear wheel may have a hollow shaft 4 and holes or slots 9 within the area between its teeth communicating with the hollow shaft, which may contain a vane or vanes 5, extending into the stationary portion of the discharge duct of the gear pump.  As shown, the vane may be helical, rotating with the hollow shaft, and the helix of the vane may be in the direction which tends to increase the rotational motion imparted to the melt by the rotation of the hollow shaft. Small notches 6 may be cut asymmetrically along the edges of the vane.  In operation, melt entering the gear pump is carried around the outside of the gears 1, 2 to the discharge port occupied by the gear 3, and enters the outlet duct via the rotating ports 9 and hollow shaft 4 of gear 3, the combined effect of gear 3, ports 9 and vane 5 being to impart to the melt a transverse circulatory motion.  In a modified apparatus (Fig. 3) the drive shaft 12 of the dirving gear 1 of a gear pump is extended by a vane 13 into the outlet duct from the gear pump.  In a further modification (Fig. 4) a gear wheel 14 located in the discharge port of a gear pump is driven by driving gear 1, and the shaft 15 of gear wheel 14 has a hollowed centre 16 connected by ports 17 to layers of fine mesh gauze 18 (or, alternatively, a sintered porous sheath). In operation the melt leaves the discharge port via the rotating gauze 18 and the ports 17 and 16.
Patent GB-1219154-A (GB)
Title: Process for drawing and crimping a tow of asymmetrically birefringent polyester filaments
Inventor: HIGGINBOTHAM DON HUBERT
IPC: D02G1/00
Filed: 1968-06-17
Abstract: 1,219,154. Heat-crimping polyester filaments. E.I. DU PONT DE NEMOURS & CO. 17 June, 1968, No. 28695/68. Heading B5B. Filaments of a synthetic crystallizable synthetic polyester exhibiting asymmetric birefringence across each filament are crimped by drawing a tow of the filaments in a hot gas at a temperature between the second-order transition temperature of the polyester and its melting point to orient the filaments, the tow being sufficiently dry to have a moisture content below 6% and preferably below 2% by weight as it emerges from the hot gas, the dwell time of the tow in the hot gas being below one second, preferably less than 0À5 second, maintaining the moisture content of the tow below 6% whilst the tow is under tension, releasing the drawing tension and passing the tow through a jet of gas at a temperature below the second-order transition temperature of the polyester to cool and open the tow while crimp develops in the filaments. The moisture content of the opened tow is preferably below 2%. The hot gas may be air or steam. The polyester is preferably a linear condensation polyester derived from a glycol and an organic acid in which the glycol is a dihydroxy compound of a divalent saturated hydrocarbon radical containing from 2 to 10 carbon atoms and the acid component is at least about 75 mol. per cent terephthalic acid. Polyethylene terephthalate filaments are used in the examples. In an example, polyethylene terephthalate having a relative viscosity of 27À5 and a second-order transition temperature of 79‹ C. is melt spun and jet quenched to form filaments, several thousand of which are combined to form a tow bundle. The tow is drawn at a draw ratio of 2À70 through an atmosphere of dry steam at 118‹ C., the residence time in the draw-jet enclosure being 0À3 second. The steam is supplied and exhausted at such a rate that the drawn tow contains 1À2% of moisture, measured after the release of drawing tension. From the draw-roll section the tow is passed around puller rolls, fed into an air-jet opener, and collected in a container. Upon release of the drawing tension upon passing out of the air jet three-dimensional or reversing helical crimp becomes apparent in the filaments. The opened tow is cut to 2À5 inch staple fibres which are placed in a conveyer belt which carries them through an oven maintained at 160‹ C., the residence time of the fibres in the oven being 1À5 minutes.
Patent GB-1532207-A (GB)
Title: Process for purifying alkylsulphonic acids
IPC: C07C7/10
Filed: 1977-07-08
Abstract: A process for separating the alkylsulphonic acids with a linear alkyl chain from the crude sulphoxidation products of linear paraffins by treating these crude products with acyclic aliphatic ethers, then separating the two phases thus obtained and finally recovering the alkylsulphonic acids from the aqueous-organic phase.
Patent GB-719215-A (GB)
Title: Support for mine workings
IPC: E21D17/086
Filed: 1950-11-24
Abstract: 719,215. Mine roof supports. GERLACH, H. Nov. 24, 1950 [Nov. 25, 1949; April 24, 1950], No. 28827/50. Class 20 (2) Girders, 1, 2 supported on pit props for mine roof support have a transverse articulation pin 3, about which they are turned against the roof by a wedge 4 in an opening elongated in the girder in the longitudinal direction thereof and by the consequent engagement of one girder with an abutment on the other. In Figs. 1 and 2 an abutment 5 external to the girder 1 is forced against the lower edge of the end 6 of the girder 2 by the wedge 4 passing through s'ots in the member 5 and the girder 1. In a modification the member 5 is a block enclosed within the box section of the girder 2. In further arrangements a wedge 10, Figs. 11, 12, is used in place of the pin 3 and forces the end 6 of the girder 2 against an abutment 9 fixed on the girder 1. The wedge 10 has a pivot pin extension 12 used For articulation of the girders during assembly and dismantling. In a further modification, Figs. 9, 10 (not shown) both a wedge and a pin are accommodated in the articulation apertures and the pin acts as a pivot when the wedge is knocked out. As shown in Figs. 11, 12, one cheek 17 of the forked girder may be pivotable on, a pin 18 when a locking member 19 is removed to allow the pin to move axially and ledges 20 on the girder and cheek to be disengaged. In a further modification, Fig. 16 (not shown) having a pivotable cheek, the fixed cheek has a stud passing through the articulation wedge aperture of the other girder. The cheek may pivot on a vertical instead of a horizontal axis. In Fig. 19 the articulation is obtained by means of studs 24, 25 on the girder 2 engaging recesses 26 in the cheeks of the girder 1 below the wedge 13. In a further modification this articulation is on the same level as the wedge.
Patent GB-1075848-A (GB)
Title: Closure plate for the ice-dispensing end of continuous ice cream machines
IPC: A23G9/28
Filed: 1965-07-07
Abstract: 1,075,848. Dispensing liquids. APAW S.A. July 7, 1965 [July 14, 1964], No. 28842/65. Heading A4T. [Also in Division F4] The dispensing end of a horizontal barrel of an ice-cream freezer is covered by a closure plate having a cylindrical recess forming a barrel extension and having a vertical dispensing valve cylinder intersecting the recess. As illustrated, two barrels C, C 1 , are covered by a plate 1 having recesses 5 & 6 into which mixing paddles 8, 108 extend. Dispensing piston valves 4, 41, 42 move in valve cylinders communicating with the mixing barrels through ports 51, 52, 61, 62. In modifications, Figs 1-3 and 5 (not shown), there may be two barrels with a common dispensing valve or one barrel with one or two valves.