baber/WOPTO huggingface dataset:
Patent GB-547714-A (GB)
Title: Improvements in or relating to the detection of variation in wall thickness of tubes of magnetic material
IPC: G01B7/06
Filed: 1941-05-12
Abstract: 547,714. Magnetic tests. ARMOUR, A. M., and METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. May 12, 1941, No. 6115. [Class 37] In an arrangement for detecting variations in wall-thickness of magnetic tubes, and specially for detecting pitting of the outer surfaces of the tubes of multi-tubular boilers, a magnetic flux is passed through a length of the wall and magnetic particles are introduced into the tube-bore and their distribution on the internal surface of the tube, or on a membrane contiguous thereto; is observed. Thus in Fig. 1, the pitted surface 3 of tube 1 causes a bunching of the particles on the interior surface, as shown, due to the diminished reluctance of the wall at that point, Preferably a 2 per cent. by volume concentration of iron powder in water-free paraffin oil is employed for introducing the magnetic material into the bore, and a flux density of 17,000 gauss is employed. The electromagnet comprises a core 5 containing a central rod 8 with a truncated end 9 engaging in correspondingly internally-tapered segments 14 which are surrounded by a garter spring 17, the arrangement being that, in order to grip the tube 1 and hold the core 5 centrally therein, the segments, three in number, Fig. 2 (not shown), are expanded by movement of the rod 8 to the right on rotation of a tommy bar 19 pivoted at 20 to a threaded sleeve 18. The winding 23 is carried by a sleeve 22 closely surrounding and slidable on the core 5 and carried by a magnetic plug 21 which can be pressed tightly into the tubemouth. The carrier liquid 33 is contained in a flexible bag 32 connected by tubing and ducts 29 to non- magnetic nozzles 28. In use the bag 32 is shaken to distribute the particles and is then squeezed so as to force some of the contents in a fine spray into the bore and cause a piling up of particles against a flaw. The unit 21, 23 is then withdrawn, the segments 14 are slackened back, the tommy bar straightened and the whole pushed into the tube so as to enable an observation to be made. A period of magnetization of two to three seconds and 15 ccs. of liquid yield a satisfactory record, and reductions in thickness from a normal of three to two mms. can be easily detected. An arrangement using a liquid-containing cell as described in Specification 439,324 is also set out, Fig. 3 (not shown). The Specification refers also to an inspection torchlight fitted with a periscope mirror system, to coloured magnetic particles for ease of observations and to an A.C, solenoid, and states that sensitivity may be adjusted by varying the winding voltage.
Patent GB-181065-A (GB)
Title: Domestic clothes washing machine for washing clothes and the like
IPC: D06F15/00
Filed: 1921-02-23
Abstract: 181,065. Wainwright, A. Feb. 23, 1921. Washing-plungers have diametral webs H, to the top of which are secured two semi-circular covering-plates I, secured across a centre-piece J extended to receive an operating-rod L pivoted to a counter-weighted lever D working in a bracket E on a stand A. The webs and the centre-piece are cut out to receive a dished plate K, and a wire receptacle N is provided for soap.
Patent GB-768302-A (GB)
Title: Polymeric sanitary coating compositions
IPC: B32B15/08
Filed: 1955-03-02
Abstract: Coating compositions comprise (1) a vinyl chloride-vinylidene chloride copolymer in proportions 30/70 to 75/25 which is completely soluble in xylene at 25 per cent concentration and has a specific viscosity of 0.12 to 0.30 in 0.4 per cent solution in nitrobenzene at 25 DEG  C.; (2) a solvent comprising at least 85 per cent of a liquid aromatic hydrocarbon having a boiling point at least as high as benzene, e.g. benzene, toluene, xylene, ethylbenzene, isopropyl benzene, hi-flash naphtha or "Solvesso No. 100," (Registered Trade Mark), and optionally ketones or esters, e.g. methyl ethyl ketone, methyl isobutyl ketone, cyclohexanone, isophorone, ethyl acetate or butyl propionate, and (3) an oleoresinous varnish base comprising a drying oil, e.g. tung oil, dehydrated castor oil or linseed oil modified by maleic anhydride and pentaerythritol, and an oil-soluble non-heat-hardening resin, e.g. a phenol/aldehyde, unsaturated petroleum hydrocarbon or coumarone/indene resin, in proportions 20/80 to 67/33 , the combined solids concentration in the solvent being 15 to 50 per cent and the ratio of the copolymer to varnish being 95/5 to 10/90 . Pigments, e.g. titanium dioxide, carbon black and aluminium, dyes and waxes may be added.  The polymer is prepared by bulk polymerization using ultraviolet light or benzoyl peroxide, and homopolymers insoluble in (2) are removed by filtration which is facilitated by adding up to 2 per cent of alcohol.  The varnish is prepared by heating the resin and oil.  The composition may be applied to primed or bare tin, iron or aluminium and baked at temperatures above 260 DEG  F.  In examples, varnishes are prepared by heating tung oil with para-phenyl phenol/formaldehyde and para-tertiary-amyl phenol/formaldehyde resins.
Patent GB-1152711-A (GB)
Title: Improvements relating to Electrodes for Electrode Boilers.
Inventor: WILLIAMS GERALD AUSTEN
IPC: F24H1/22
Filed: 1966-02-11
Abstract: 1,152,711. Electrode boilers. PARKINSON COWAN Ltd. 10 Feb., 1967 [11 Feb., 1966], No. 6239/66. Heading H5H. The electrode of an electrode boiler comprises a conducting tip 8 mounted upon an insulating bushing 1 projecting into the boiler, the tip being connected to an external terminal (24) by a conductor 3 passing through the bushing 1 and there being a circumferential recess 15 between the tip 8 and the bushing 1. This is stated to prevent damage to the porcelain bushing by small arcs developing on the outer surface of the tip 8. This tip 8 has channels through it, to allow the flow of water, being constructed as an inner cylinder 9 connected to an outer cylinder 13 by radial webs 12. The cylinder 9 is held on the conductor 3 between a nut 14 and a flange 4, the latter being housed in a recess 5 in the bushing and sealed to it by a gasket 6. The electrode assembly co-operates with a tapered insulating sleeve 17 which can be moved relative to the electrode to vary the cross-section and thus the resistance of the current path between the electrode 8 and a neutral sleeve (33), (Fig. 1, not shown).
Patent GB-671257-A (GB)
Title: A device for trueing grinding wheels
IPC: B24B53/08
Filed: 1950-03-13
Abstract: 671,257. Trueing grinding-wheels. MASKINAKTIEBOLAGET KARLEBO. March 13, 1950 [March 23, 1949], No. 6244/50. Class 60. A device for trueing the grinding wheel 5 of a profile or copy-grinding machine to the same shape as that of the tracing pin 2 is characterised in that a pivotable guiding means 18 which contacts the tracing pin 2 is connected with the trueing means .10 in such a manner that the latter is always correctly presented to the wheel profile. A pantograph 3 connects the tracing pin 2 with a work table 4 on which the trueing diamond 10 is carried through the media of a support 9 and a slide 11 pivotally connected at 30 with a dog arm 12 which is adjustably clamped in a dovetail slide secured to the work table. The guiding means is formed by a diametrical float 17 on a pin 18 pivotally mounted in a member 13 adjustably clamped to a guide 16 forming part of a table 1 which normally carries the template for the machine. The pin 18 is equipped with a control knob 22 and connected through bevel gearing 20, 21, 23, 24 with a ratio of 1 :1, universal joints 15 and a telescopic shaft 14 with a holder 26 for the rod 10. This holder is pivotally mounted in the support 9 which is connected by a pivoted link system 8 with a slideway 7 on the frame of the machine. A stock 6 supporting the grinding wheel shaft and adjustable about two horizontal and mutually perpendicular axes one of which is parallel to an edge 4' of the work table is mounted for reciprocation on the slideway 7. In order to allow the axis of reciprocation of the grinding wheel to be inclined with respect to the work table, the slideways 7, 11 are pivotally mounted about axes perpendicular to the rotational axis of the grinding wheel. In operation, the pin 2 is brought into contact with the flat 17 of the member 18 which is rotated to bring its line of contact with the pin into coincidence wth its axis of rotation and the arm 12 is adjusted with respect to the table 4 until the diamond 10 contacts one edge of the wheel 5. Trueing is now effected by moving the pin 2 across the flat 17 to cause the diamond 10 to copy the profile of the pin on the reduced scale determined by the pantograph, the member 18 being rotated during this movement to maintain its rotational axis in coincidence with its line of contact with the pin. If the grinding wheel is to be trued for the treatment of tools with side clearance, the slide 7 is pivoted about the axis parallel to the edge 4<SP>1</SP> or the stock 6 is pivoted about the axis perpendicular thereto. The support 9 may be swung into an inoperative position in which it is held by a snap spring 29.-
Patent GB-601602-A (GB)
Title: Process for the preparation of acid alkyl sulphates and of the salts of these acids
Filed: 1945-03-13
Abstract: Alkyl acid sulphates R.SO4H are prepared by heating alkyl formates H.COOR with chlorosulphonic acid in an inert organic acid.  It is stated that in a first phase sulphonation occurs with formation of an ester SO3H.CO.OR which is unstable, and splits into the acid sulphate and carbon monoxide on heating.  In an example, 1 gm-mol. of alkyl formate (for example, amyl, octyl, lauryl or myristyl formate) is dissolved in ten times its weight of carbon tetrachloride and 1.1 gm.-mols. of chlorosulphonic acid added thereto; the whole is heated with reflux until the discharge of gases ceases and the solvent is then distilled off leaving the desired crude alkyl acid sulphate as residue.  The acid sulphates are easily converted into salts particularly the soluble sodium and ammonium salts.  Specification 607,204 is referred to.
Patent GB-1407094-A (GB)
Title: Time interval determining apparatus
IPC: G01S13/78
Filed: 1972-08-24
Abstract: 1407094 Radio navigation LITCHSTREET CO 24 Aug 1972 [15 Sept 1971] 6427/75 Divided out of 1407091 Heading H4D The disclosure of the Specification is the same as that of Specification 1,407,091, the claims however relate to determining the sum of Y, the distance between the own transponder location and the other transponder, and X the difference in the S.S.R. ranges to the two transponders.
Patent GB-1214455-A (GB)
Title: Improvements in or relating to panel structures
Inventor: AKERS LEWIS EDWIN
IPC: E04B2/82
Filed: 1967-02-10
Abstract: 1,214,455. Panelled partition structures. AIRSCREW-WEYROC Ltd. 8 Feb., 1968 [10 Feb., 1967], No. 6558/67. Heading E1W. [Also in Division A4] A panel structure for use as a partition wall, roof or shelf comprises a panel 10 and a clip 13 adapted to be secured to a support and having resilient spaced jaws 28 provided with grooves 30 of a size to receive beading 19 provided on the panel 10 adjacent an edge thereof which is adapted to engage between the jaws 28 of the clip. The beading 19 may be constituted by enlarged edges of a locking member 18 secured to the panel edge, by a wire secured to or moulded into one or both surfaces of the panel Fig. 3 (not shown) or by a strip of metal or plastic secured to the panel edge and projecting out from one or both surfaces thereof, Fig. 4 (not shown). The clip may extend along the full length of the panel. Panels may be connected edge-to-edge by double spring clips 14 each having two pairs of grooved jaws 33 to embrace contiguous edges of two panels provided with the beading 19. The panels may be of wood chipboard coated with synthetic resin and the clip may be of resilient plastics material such as rigid unplastised polyvinyl chloride.
Patent GB-743076-A (GB)
Title: Recording means for underwater ultrasonic detecting systems
IPC: G01S7/534
Filed: 1953-03-10
Abstract: 743,076. Control of A.C. motors. MINNEAPOLIS-HONEYWELL REGULATOR CO. March 10, 1953 [March 10, 1952], No. 6563/53. Class_38(3) [Also in Group XIX, XXXVIII and XL (c)] An ultrasonic direction finder (see Group XXXVIII) has a directional radiating element which may be rotated continuously in either direction or oscillated automatically within a selected sector, the radiating element being driven by a splitphase motor 128. As shown an earthed A.C. supply is applied to a low-impedance winding 134 of the motor via a phase-shift capacitor 138 and to a control winding 130 via master switch 146, a speedcontrol variable resistor 148 and contacts 142, 144 of a reversing relay 140 controlled by switch 150 in the live side of its A.C. supply, the relay winding being normally earthed through contact 154 of a relay 156 which is interconnected with a relay 170, each winding of the two relays being connected to the live side of the A.C. supply through sector scan switch 158 and to ground through the contacts 154, 163 of the other relay. The relays 156, 170 are such that when switch 158 is closed one relay, e.g. 170, operates first thereby preventing energization of the other relay 156. The limits of the sector scan are determined by adjustable contacts 164, 162 connected to the earthy sides of relays 140 and 156 respectively, the contacts being engaged by an earthed switch arm 160 rotated by the motor. To effect an oscillating scan. reversing switch 150 is first closed causing the motor and switch arm 160 to rotate in a counterclockwise direction. Sector scan switch 158 is then closed thereby energizing relay 170 to open contact 168 but the reversing relay 140 is not affected until switch arm 160 engages contact 162 when relay 156 is energized for an appreciable period thereby de-energizing relays 140 and 170 causing reversal of the motor and maintaining energization of relay 156 via the closed contacts of relay 170; when arm 160 engages contact 164. relays 140, 156 and 170 change over and hence the arm 160' oscillates between contacts 162 and 164.
Patent GB-114512-A (GB)
Title: A New or Improved Spring Wheel.
Inventor: MURPHY STEPHEN JAMES
IPC: B60B9/00
Filed: 1917-05-10
Abstract: 114,512. Murphy, S. J. May 10, 1917. Spring wheels with continuous outer rigid ring and metal springs.-Relates to spring wheels with rigid drive in which the resiliency is obtained from two sets of spring-supported parallel members arranged between the hub and rim. In the form shown in Fig. 1, the hub 8 is adapted to slide on rods 5 connected to sleeves 6 which are adapted to slide on rods 1 connected to the rim 3, the sliding movements being controlled by springs 10, 9. In the modification shown in Fig. 2, the hub 7 is supported by leaf-springs 12 bearing on rim-seats 13, a second set of springs 11 being arranged between the hub and a pair of slides 6 which are guided by rods 1 rigid with the rim 3. The hub is formed with forks 16 embracing the slides 6. The arrangements may be duplicated, in which case the two sets of spring devices may be displaced circumferentially of the wheel.
Patent GB-637803-A (GB)
Title: Improvements in or relating to pressure regulating throttle devices
IPC: G05D16/10
Filed: 1947-03-10
Abstract: 637,803. Pressure-regulating valves. BENDIX AVIATION CORPORATION. March 10, 1947, No. 6685. Convention date, March 15, 1946. Addition to 603,812. [Class 135] The control piston of the valve of the parent Specification is formed so that its end 12 is supported solely by the cylinder 1. The valve may be disposed between the suction pump and the air-driven gyroscope of an aircraft instrument and comprises a cylinder 1 open to the atmosphere through ports 13, and connected at one end 3 to the pump and closed at its other end by a hollow plug 4<SP>1</SP> having a stem 4 and connected to the instrument. The spring-loaded, control piston 8 supported at its ends 12, 9 by the cylinder 1 and the stem 4 respectively controls ports 7 in the stem upon change in the pressure difference on the two sides of the piston caused by variations in the pump suction. Thus, the suction to the instrument is maintained substantially constant.
Patent GB-694986-A (GB)
Title: Improvements in and relating to electric cables
Inventor: WORRALL WILLIAM GERARD
IPC: H01B11/18
Filed: 1951-03-20
Abstract: 694,986. Air-space cables. BRITISH INSULATED CALLENDER'S CABLES, Ltd. March 19, 1952 [March 20, 1951], No. 6688/51. Class 36. In an insulated cable comprising a central conductor 3 enclosed within a coaxial outer member 4 and spaced therefrom by an insulating strip 1 applied to the conductor in an open helical winding, the strip is divided into radial projections 5 by slots 2 which are approximately parallel to the axis of the conductor and shallower than the radial thickness of the strip, so that the projections 5 are joined by a continuous web 6 adjacent the surface of the conductor. The strip is provided with slots which are oblique to its two major surfaces before application to the conductor, the angle of obliquity depending on the ultimate angle of lay of the strip. The coaxial outer member 4 may consist of two layers 7, 9, one or both of which may be of metal.
Patent GB-885753-A (GB)
Title: Blow-off control device for jet propulsion units
IPC: F02C7/04
Filed: 1959-02-26
Abstract: 885,753. Jet propulsion plants. B.M.W. TRIEBWERKBAU G.m.b.H. Feb. 26, 1959 [March 29, 1958], No. 6704/59. Class 110 (3) [Also in Group XXIX] An air intake for a ram jet engine comprising an outer shell surrounding a central cone the apex of which is arranged upstream of the leading edge of the casing, has a cylindrical slide valve which controls the area of blow-off ports in the outer shell of the intake casing actuated by the pressures in front of and behind the perpendicular shock wave so as to increase the flow area through the ports against a restoring force when the shock wave migrates upstream and allows the restoring force to reduce the area of the ports when the shock wave migrates downstream. In the ram jet air intake shown, Fig. 1, the supersonic air stream impinges upon the central cone 1 and experiences first an oblique compressional shock 2 and then a perpendicular shock 3 which, under critical operating conditions, should impinge on the leading edge 4 of the outer shell 5. After passing through the shock 3, the air enters the subsonic diffuser 6 leading to the combustion chamber having a flame ring 8. Behind the supporting stays 6 is a rotatable fuel injector 10, the struts of which carry a sleeve valve 11 provided with peripherally spaced ports 12. Rotation of the valve 11 covers and uncovers the blow-off ports 13 which are divided lengthwise by partitions 14 to improve the outflow when the ports are partially open. The injector 10 is connected to a rotary piston 15, which has vanes located between vanes 16<SP>1</SP> extending radially inwards from the casing 16. The vanes of the piston 15 are subject to the pressures at the points 17, 18 on the surface of the cone 1. Point 17 is located on the surface where the perpendicular shock strikes the surface of cone 1 under critical operating conditions and point 18 is located upstream of this point. The action of these pressures are balanced by the torque in a torsion bar 19. The arrangement is such that the ports 13 are uncovered completely if the shock wave 3 migrates in the forward direction of flight and covered completely if the shock wave 3 moves rearwardly. The slide valve 11 may move axially instead of rotating. In a modification, the pressures at the points 17, 18 control a servo-piston valve which controls the main rotary piston pneumatically. To avoid excessive loading of the vanes of the rotary piston when the shock wave migrates suddenly and unexpectedly in the forward direction a spring- loaded by-pass valve may be arranged between the ducts 17, 18.
Patent GB-1156427-A (GB)
Title: Improvements in or relating to Burners for Fluid Fuels
Inventor: LINDE ROBERT VON
IPC: F23C9/00
Filed: 1967-02-13
Abstract: 1,156,427. Burners. R. VON LINDE. 13 Feb., 1967 [21 Feb., 1966], No. 6716/67. Heading F4T. A burner for fluid fuels such as gas or oil has in a casing 1 a fuel nozzle 2, a mixing tube 3 and an air inlet pipe 8, the tube 3 leading to a combustion chamber 4 and having a flange 5 containing orifices 6 so that recycled exhaust gas from the combustion chamber is added to the fuel before it enters the mixing tube 13 and the air pipe 8 leading in tangential relationship with the tube 3 so that air passing into the mixing tube describes a spiral path and causes exhaust gases to be sucked through the orifices 6.
Patent GB-711400-A (GB)
Title: Improvements in or relating to compensation for extraneous voltages transmitted by long-distance current supply into the symmetrical line circuits
IPC: H04B3/44
Filed: 1952-03-14
Abstract: 711,400. Preventing inductive disturbance. SIEMENS & HALSKE AKT.-GES. March 14, 1952 [March 14, 1951], No. 6745/52. Class 40 (4) Interference in side circuits due to D.C. and A.C. flowing in a phantom circuit or in a circuit composed of two bunches of line wires is prevented by compensating for the longitudinal transverse unbalances in the side circuits by means of compensating networks at the line ends which are designed to compensate at both fundamental and harmonic frequencies of the current. As shown in Fig. 2, the current J is fed into the centre tap of the line transformer FLU, the longitudinal unbalance being balanced out by slide resistance P and choke VD having a displaceable core K, whereas in Fig. 3, the compensating elements are connected in parallel with the line transformer. Condenser elements may also be included if desired. The Specification derives mathematical formulae for the interfering currents and indicates how the compensating elements may be designed to compensate over a temperature range.
Patent GB-253201-A (GB)
Title: Improvements in or relating to machines for rounding or trimming the soles of boots or shoes
IPC: A43D27/00
Filed: 1925-03-13
Abstract: 253,201. British United Shoe Machinery Co., Ltd., Woodcock, R. B., and Kestell, T. A. March 13, 1925. Stationary-cutter apparatus; traversing-cutter apparatus.-In sole-rounding machines, of the type having a pattern of the sole to be produced, a knife, and means for causing relative movement between the knife and the pattern to effect the rounding of the sole. a quick-acting mechanism is provided for returning the knife to the starting position, together with means for withdrawing the knife from the edge of the rounded sole during such movement. The invention is described as applied to the machine shown in Specification 18954/02, [Class 17, Boots &c.]. When the starting-lever 19, i.e. the lever n in the above Specification, is automatically released to stop the machine, a lever 4 is swung on a pivot 8 by a spring 16 to clutch a brake band 2 to a drum 1 on the driving shaft 6. During continued movement of the table, a lever 5 pivoted on the shaft 6 and carrying the pivot 8 is moved to compress a spring 12 and to stop the mechanism. The spring 12 then expands and returns the knife to starting position limited by a stop 20. An air hole 15 is uncovered by a plunger 13 to allow air to be trapped in the cylinder. During the return movement of the knife it is prevented from returning in contact with the sole by mechanism, Fig. 2, which locks the plate 21, or the plate 27 in the above-mentioned Specification, on which the knife is mounted, to its carrier 22, so that it is swung round its pivot 23 by its spring. A ratchet segment 24 is fixed to the plate 21, and a pawl 25 is pivoted to the carrier 22 together with links 29, 39, 27. A pawl 34 is carried by the pivot 33 and engages a ratchet 36 on the cam 37. During the last part of the forward movement of the carrier 22 the part 34 slips over the ratchet teeth 36, and during the return movement the pawl 34 engages the teeth moves arm 27 about its pivot and moves link 39 to allow a spring 26 to engage the pawl 25 with the ratchet 24 to lock the plate 21 against the urge of its spring. The knife in its locked position acts as a gauge for the next workpiece. Specifications 1070/08, [Class 17, Boots &c.] and 26480/09 also are referred to.