baber/WOPTO huggingface dataset:
Patent GB-944432-A (GB)
Title: Improvements in tunnelling machines
IPC: E21D9/10
Filed: 1960-04-12
Abstract: 944,432. Tunnelling machine heads. GOODMAN MANUFACTURING CO. April 12, 1960 [April 17, 1959], No. 13031/61. Divided out of 944,431. Heading E1F. The cutter head of the tunnelling machine described in the referred to Specification 944,431 consists of a rotatable plate 23 on the forward surface 24 of which is mounted adjacent the centre thereof conical cutter rollers 49 rotating about axes inclined forwardly of and towards the centre of the plate. Further similarly inclined conical rollers 51 are spaced radially outwards of and between said first cutter rollers. In addition spaced radially and circumferentially of said rollers are cutter discs 60 of which some are preceded in the direction of rotation of the plate by cutter picks 59 that extend forward of the plate to a lesser extent than the discs, the supports of which partially shroud the discs.
Patent GB-880532-A (GB)
Title: Improvements in or relating to barrelling chips
Inventor: SMITH-GORMAN ROBERT JACK
IPC: B24B31/14
Filed: 1958-04-17
Abstract: Barrelling chips are formed from a mixture of ball clay, china clay and particulate abrasive material e.g. emery, garnet grit, pumice, diamond dust and aluminium oxide, the mixture being processed according to the method disclosed in the Specification p  880,531. The ball clay and china clay together contain 50-60 parts by weight of SiO2 to 25-35 parts by weight of Al2O3 with TiO2, Na2O, Fe2O3 CaO, MgO, water and other impurities, at least 90% by weight of the ball clay and china clay being constituted by SiO2 and Al2O3.
Patent GB-1125501-A (GB)
Title: Improvements in or relating to the tubes of boilers and like installations
IPC: F22B37/10
Filed: 1966-03-24
Abstract: 1,125,501. Protective coverings for boiler tubes. DOMINION BRIDGE CO. Ltd. 24 March, 1966 [17 Sept., 1965], No. 13064/66. Heading F4A. Metallic or ceramic protective thimbles 44 are fitted over the axially extending tubes 38 of a waste heat steam or hot water boiler (Figs. 1-3), immediately upstream of metallic or ceramic shielding plates 42 situated at the bend portions (40, Fig. 4) of the boiler tubes, to provide fairing surfaces and so prevent erosion of the tubes caused by the dust content in the waste gases. The thimbles 44 which may be in one or more longitudinal sections are formed with a rectangular base 52 dimensioned to be flush with the outer edge of the shield plates 42 and an annular top lip 50. The angle of the conical leading surface is 10 degrees or less and preferably between 5 and 6 degrees. The bases of adjacent thimbles around adjacent tubes abut one another. The thimbles may also be formed to fit rectangular tubes (Fig. 6), to fit tubes in tangent relationship (Figs. 10-12), or tubes interconnected by welded membranes (Figs. 7-9). In the latter cases the thimbles are formed as two half units attached to the tubes from opposed sides as by welding or brazing. Opposed sides of the base of the thimbles may be provided with the grooves (60, Fig. 14) to locate the chamfered edges (58) of the shield plates (42A) to prevent their outward movement whilst permitting sideways and downward movement due to thermal expansion.
Patent GB-1461605-A (GB)
Title: Method and device for producing a track guide in the recording  of information in a spiral on a disc shaped signal carrier
IPC: G11B7/125
Filed: 1974-03-25
Abstract: 1461605 Recording video signals TED BILDPLATTEN AG AEG TELEFUNKEN TELDEC 25 March 1974 [27 March 1973 2 Feb 1974 (2)] 13114/74 Heading G5R In a laser arrangement for recording video signals on a disc shaped record carrier, a photo lacquer layer on the disc is exposed simultaneously to an information signal and a signal which after subsequent etching of the disc provides a guidance groove for a play-back scanning element. Linearly polarized laser beam 31 is split by a polarization separator P31 into part beams 32, 33. Part beam 32 is transmitted via mirrors Sp31, Sp33 to modulator M which intensity modulates the beam with information signals to be recorded and the modulated output is passed via crossed cylindrical lenses L31, L32, which change the beam to one of elliptical crosssection, and mirrors Sp34, Sp32 to a second polarization separator P32. Part beam 33 which has a circular cross-section is also directed via mirrors Sp31, Sp35, Sp36 and Sp32 to the separator P32 where the beams are recombined, Fig. 3B, and focused via lenses L34, L35, mirror Sp37 and lens L36 on a photo lacquer layer in plane E33 of the disc P. As the disc rotates the head E32 moves along a radius of the disc to expose a spiral track having the form shown in Fig. 1a in which the continuous spine is produced by circular part beam 33 and the laterally extended rounded portions by the information modulated elliptical beam 32.
Patent GB-848462-A (GB)
Title: Improvements in or relating to the production of tungsten powder
Inventor: POOLE FREDERICK EDWARD
IPC: C22B34/36
Filed: 1957-04-25
Abstract: In a process for the electrolytic recovery of tungsten scrap (see Group XXXVI) an aqueous solution of ammonium tungstate may be boiled to precipitate ammonium paratungstate which is decomposed with hydrochloric acid to yield tungstic oxide and reduced to metallic tungsten by heating in hydrogen to 700 DEG  to 750 DEG C.  An aqueous solution of sodium or potassium or the tungstate may be mixed with boiling hydrochloric acid to precipitate tungstic oxide which is reduced as above.
Patent GB-1516079-A (GB)
Title: Manufacture of parts from particulate material
IPC: B22F3/10
Filed: 1977-03-30
Abstract: To remove binder from an unfired moulding before sintering, the unfired moulding is initially heated to a temperature above the melting point of the binder, for liquifying the binder, and introduced at this temperature into a solvent for the binder in the vapour phase, which solvent is held at a temperature slightly above the melting point of the binder. The solvent vapour then slowly penetrates into the unfired moulding and dissolves the binder contained therein in such a way that no excessive stresses due to expansion of the binder are generated in the interior of the moulding, until the combination of solvent and binder virtually ceases to exude out of the moulding. Subsequently, the moulding is introduced at a temperature above the melting point of the binder into a bath of the solvent, in order to remove binder remaining in the moulding from the latter.
Patent GB-757370-A (GB)
Title: Improvements in or relating to hydraulic control systems; particularly for hydraulic braking systems of vehicles
IPC: B60T11/16
Filed: 1954-05-06
Abstract: 757,370. Hydraulic brakes. SCHAFER INDUSTRIEGES. SCHWEINFURT. May 6, 1954 [May 11, 1953], No. 13301/54. Class 103 (1). In a hydraulic master cylinder control system, particularly for hydraulic braking systems of vehicles, in which the displacement of the brake pedal-actuated master cylinder piston 7 acts against a spring 19 and also against the force exerted by the piston and return spring of a working cylinder connected to the master cylinder, the master cylinder is in communication via a suction valve 8 for all positions of the master cylinder piston with a reservoir 3 and with the working cylinder via a fixed fluid flow-throttling passage 18 of constant cross-sectional area to eliminate any partial vacuum arising on retraction of the master cylinder piston so that the brake system is immediately ready for a repeated operation after the brakes have been applied. When the brake pedal is applied, the piston 7 of the master cylinder 2 is displaced from the position illustrated to the left against the force of the spring 19 and fluid is forced via passage 4, flow-throttling passage 18 and branch passages 5 to the working cylinders (not shown); the suction valve 8 remaining closed during this operation. Upon the brake pedal being released, the spring 19 returns the piston 7 to its original position and due to the resistance offered by the flow-throttling passage 18 causes a drop in pressure in the master cylinder 2, thus opening the suction valve 8 to allow fluid to flow from reservoir 3 into the master cylinder, excess pressure being released by the spring-loaded valve 6. Other modifications are described and illustrated in the Specification where, for example as shown in Fig. 4, the flowthrottling passage 18 may be incorporated in a separate branch member 24 screwed into the body casting 1 of the master cylinder 2. Specification 753,699 is referred to.
Patent GB-127579-A (GB)
Title: Improvements in and relating to Automatic Carburettors for Internal Combustion Engines.
Inventor: RODRIGUEZ ISIDRO
IPC: F02M3/09
Filed: 1919-05-27
Abstract: 127,579. Rodriguez, I. May 27, 1918, [Convention date]. Spray carburettors. - In carburettors wherein air controlled by an extension of the throttle valve is admitted to a preliminary mixing chamber between the float chamber and the main nozzle, the supply of air to such preliminary chamber is further controlled by a manually adjustable valve which carries an adjustable grooved rod by which the fuel is controlled. The carburettor comprises an air inlet 2<a>, a main nozzle 2, and a throttle valve 13 actuated by a lever 20 working between adjustable stops. An extension 22, Fig. 1, contains the preliminary mixing chamber 1, and is in communication through passage 9, Fig. 2, with float chamber 10, and through passage 4 with passages 5, 6, Fig. 3, controlled by an extension 15 of the throttle valve, Figs. 3 and 5. Another passage 18, Fig. 3, communicates with passage 5 and also through passages 17, 16 with the interior 14 of the throttle valve which, in its closed position communicates with the induction pipe through an aperture 21, Fig. 1. Fuel reaches the passage 9, Figs. 1 and 2, and then through apertures 24 passes to the interior 23 of a valve 8 whence it passes to the preliminary mixing chamber 1 through grooves in a rod 11 adjustably carried by the valve 8 which controls the admission of air to the chamber 1. At starting, air enters the passage 6 and past a valve 19 to mix with fuel from passage 5, the resulting mixture passing through passages 17, 16, 14, 21 to the engine. As the throttle is opened, passages 17, 16 are put out of action and air then passes through passage 5 to mix with fuel in chamber 1 before it is discharged from the main nozzle 2. The Specification as open to inspection under Sect. 91 (3) (a) contains also a modification in which the air passage is horizontal, and is traversed by a vertical multiple-jet nozzle with which the valves corresponding to 8, 11 are coaxial. This subject-matter does not appear in the Specification as accepted, but is contained in Specification 153,506.
Patent GB-456216-A (GB)
Title: Improvements in weft-carriers for weaving looms
IPC: D03J5/00
Filed: 1935-05-04
Abstract: 456,216. Looms with stationary weft supplies. DEWAS, R., 120, Boulevard de St. Quentin, Amiens, France. May 4, 1935, No. 13339. Convention date, June 2, 1934. Addition to 442,206. [Class 142 (ii)] Relates to modifications of the weft conveying and pulling needles of the kind claimed in the parent Specification. The conveying needle shown in Fig. 1, is made from a blank of sheet metal folded to form bent-over parts 2, 3, the middle part 1 facing the reed. The part 2 is shorter than the part 3, has curved and inclined parts 2<a>, 2<c> and is provided with a cleaning hole 6 for the cutter 5. The part 3 contiguous with a reduced portion of the central part having a beak 1<b> has a bent-over portion 3b adapted to mask the point 2b of junction of the parts 2<a>, 2<c> of the part 2. The weft 9 is held at 7<c> in a notch or slot in the part 1 and between springy clips 4 arranged between the parts 2 and 3. In a modification. the slot between the parts 1 and 2 is closed, so that the weft is threaded permanently. In another modification, the conveying needle is made of a blank with the parts 2, 3 bent away from a middle part which faces the fel of the fabric. The pulling needle shown in Fig. 11 has two branches, one branch 13 having a point 14 prolongs the surface of the needle facing the reed and acts as a protector, while the other branch comprises a rigid prong 15 co-operating with a springy prong 16. The prong 15 carries a threading and holding device comprising a beading 17 recessed on its under side at 19 for the reception of a hook 20 for engaging the weft 9 when the pulling needle meets the conveying needle. Another form of pulling needle is described in which the weft from the conveying needle is caught by the pulling needle when the needles separate. In order to tension the weft as it passes from one needle to the other, the weft may pass through an eyelet on an arm fixed to the loom connecting rod and through eyelets on the lay.
Patent GB-470996-A (GB)
Title: Improvements in the attachment of locks, fastenings and fittings to attache and suitcases, bags, purses and the like
IPC: A45C13/10
Filed: 1936-05-12
Abstract: 470,996. Securing locks &c. to attache cases &c. CHENEY, C. W. May 12, 1936, No. 13388. [Classes 44 and 89 (ii)] [Also in Group XVII] In fittings such as locks or handle-securing means attached to attache cases, bags, purses, &c., by clinched prongs, each V- shaped prong is formed with two portions c, d which are folded or turned inwards one upon the other to provide a prong of double thickness. A fitting in which the prongs extend from a curved flange f, is shown before folding, Fig. 7, and after folding, Fig. 8. Fig. 9 shows the application to a rectangular-lock case, the prongs being at the corners with the parts c, d initially at right-angles. The Specification describes a similar arrangement applied to a handlesecuring device. Specification 213,520, [Class 44], is referred to.
Patent GB-423002-A (GB)
Title: Improvements in apparatus for cleaning wool and other fibres
IPC: D01B3/00
Filed: 1934-05-03
Abstract: 423,002. Cleaning wool and like fibres. HADDAN, R., 31, Bedford Street, Strand, London.-(Frosted Wool Process Co. ; Los Angeles, U.S.A.) May 3, 1934, No. 13406. [Class 120 (i)] Apparatus, particularly for carrying out the processes of cleaning wool and animal fibres described in Specifications 396,471 and 398,683, [Group XXIII], comprises a refri. gerating chamber 1, Fig. 1, means such as a conveyer 2 for passing the fibres therethrough and means for circulating the cold air through the material on the conveyer so as to freeze water, grease, chaff, burrs &c., adhering thereto. The refrigerated fibres are discharged into a beater or opener 7 which serves to separate the frozen foreign matter from the fibres. The fibres are fed from an automatic hopper opener 5 on to a feed belt 4 and thence to the conveyer 2. Refrigerating coils 3 are provided above the conveyer 2 and air is circulated by fans 14 through an inlet 1<b> above the coils 3 and an outlet 1<c> below the conveyer. The fibres are delivered by a belt 6 to the beater 7 and the separated foreign matters passing through the screen 7<a> are withdrawn by suction into the separator 8 and discharged at 8<a>. The cleaned wool is discharged on to a belt 9 through the door 7b. A belt 10 is arranged above the belt 9 to squeeze cold air out of the cleaned wool and prevent entry of warm air into the apparatus. The feed and discharge of the opener 7 may be automatically controlled while two or more beaters may be provided. In a modification, cold air is forced downwardly on to the upper run of the conveyer 2 from a hood 18, Fig. 4, while the beater 17 comprises arms on a shaft 17<a> revolving in a perforated cylinder 17b. In a further modification, an endless belt 13, Fig. 7, is arranged above the conveyer 2 and cold air is discharged upwardly through the conveyer 2 from jet pipes 16. Alternatively a hood 13<h>, Fig. 9, may be employed instead of the belt 13. The feeder and opener 5 may be arranged within the refrigerating chamber 1, Figs. 4 and 7, the wool being fed in through a shoot 70. Where the fibres contain a large proportion of burrs and chaff a burr picker 25, Fig. 9, may be used in advance of the beater. Where the foreign matter consists exclusively of burrs the burr picker may be used instead of the beater.
Patent GB-1455357-A (GB)
Title: Inertia switch devices
IPC: H01H35/14
Filed: 1974-03-26
Abstract: 1455357 Inertia switches; thermal switches JAEGER 26 March 1974 [26 March 1973 31 Jan 1974] 13425/74 Heading H1N An inertia switch, for controlling safety devices in a vehicle for example, comprises a covered casing 1 containing on the bottom 3 thereof an inertia mass 2 of a size permitting lateral movement within the casing, a partition 4 being spaced from the bottom 3 by a distance substantially equal to the height of the mass 2, said mass having a central conical recess 5 in which is engaged an elongate contact actuator member 6 loaded by a spring 20 therein which bears directly or indirectly on the cover 8 of the casing via an adjusting screw 10, whereby a predetermined acceleration or deceleration causes lateral movement of the mass 2 and produces a self-retaining change in the condition of contact members 12, 13. In a first embodiment the switch is reset by depressing button 9 which urges collar 16 back to the position shown in Fig. 1 after it has been lifted on shoulders 18 by lateral movement of mass 2. The plunger 6 may be conductive and collar 16 insulating, or vice versa. In the latter case the contacts are broken on impact and collar 16 has insulation on its lower face, or one contact member is longer so as not to engage the collar after actuation. In a second embodiment (Fig. 3) one contact member 13 is of bimetal and hookshaped at 21 to latch under conductive ring 11 after impact sufficient to lift plunger 6 adequately. Current flowing in member 13 causes it to release 6 after a time delay which is adjustable by screw 23.
Patent GB-134838-A (GB)
IPC: F16L37/30
Abstract: 134,838. Schrader's Son, Inc., A., (Assignees of Kraft, H. P.). Oct. 25, 1918, [Convention date]. Junction-pieces and the like with valves; overlap joints with packing at base of socket.-Relates to valve couplings or connexions for use in inflating pneumatic tyres from a compressed air reservoir and of the kind containing a check valve and packing which makes an air-tight joint when applied to the tyre valve nipple, the check valve and the tyre valve at the same time being opened to afford free passage for the air entering the tyre. The invention comprises an arrangement in which the check valve is seated upon a flexible gasket marginally secured to the casing, the valve having a projection directly engaged by the tyre valve nipple to unseat the check valve, the casing preferably comprising a spherical head enclosed in a. rubber jacket with the hose shank projecting at any desired angle to the operative parts. As shown in Figs. 2 and 3, the spherical casing A attached to the hose C is formed with an air passage g and check valve D seated on a flexible rubber gasket E secured between the sharp inclined edge of a shoulder F and a projecting lip I on an annular plug G screwed into the casing up to a shoulder H. The valve D is formed with a flattened extension d projecting beyond the opening in the gasket, so that when the device is applied to the tyre nipple, as shown in Fig. 3, the reduced end of the nipple, entering the opening in the plug G, directly engages the extension d, unseating the valve D whilst the nipple itself bears in substantially air-tight manner against the gasket E. At the same time, the extension d depresses the valve pin e of the tyre valve to unseat the check valve f therein, both valves thus being opened to provide a free passage for inflation. The casing is protected by a rubber jacket J with a thickened or beaded lip l.
Patent GB-657932-A (GB)
Title: Improvements in and relating to rail tracks and vehicles therefor
IPC: B22D41/12
Filed: 1949-05-21
Abstract: 657,932. Permanent way; turntables. PLATT, J. R. May 21, 1949, No. 13634. [Class 104 (ii)] [Also in Group XXXII] A conveying system to facilitate the transportation of material over a surface of earth or sand, as in a foundry, comprises a hand truck 12 with pairs of wheels 13 provided with peripheral flanges 13a at their axially outer faces to engage the longitudinal side portions of a track 22 which is substantially continuous between the wheel-engaging surfaces. As shown, the track is constituted by lengths of plate-like castings with depending flanges along the longitudinal edges. Turntables 24 are preferably provided for changing the direction of travel of the truck, an adapter section 23 being interposed between the end of a track length and the turntable to provide a portion of track of a width that increases progressively away from the turntable and facilitates the engagement of the vehicle wheels when coming on to the track 22. The truck is pulled by a handle 16 at the end of a lever arm 17 secured to a tube 18 mounted on a transverse rod 19 below the vehicle chassis and provided with a cranked extension arm 20 terminating in a shoe 21, so that by elevating the arm 17 when the vehicle is on the turntable the shoe 21 can be engaged within a transverse groove 24a, as shown in Fig. 3. The turntable can then be rotated by application of a further lateral force on the arm 17. Turntables. The turntable 24 rotates above a circular sump 27, Fig. 4 (not shown), and is supported on an axial shaft provided with ball bearings, the shaft and bearings being enclosed within a cylindrical housing with a sealing ring to prevent sand from entering. A spring- loaded ball-ended plunger bears against the underside of the turntable and engages within recesses therein at positions at which wheelreceiving grooves in the turntable are aligned with the track. In a modification, a platen on the underside of the turntable has flat portions which are engaged in turn by a rod to the ends of which tensioned springs anchored to the side of the sump are connected.
Patent GB-908636-A (GB)
Title: Light concrete mixes
IPC: C04B18/14
Filed: 1960-04-19
Abstract: Light concrete mixes contain a foamed slag in which more than 85% of the pores are closed.  A suitable slag is composed of about 90% calcium metasilicate, 3% aluminium oxide, 6% calcium fluoride and 1% magnesium and alkali metal oxides; the principal constituent of this slag is chemically identical with wollastonite.  The examples describe concrete mixes containing the foamed slag, quartz sand and cement.  Specification 867,061 is referred to.
Patent GB-183628-A (GB)
Title: Improvements in or relating to spanners or wrenches
IPC: B25B13/48
Filed: 1921-05-17
Abstract: 183,628. McAliece, P. H. May 17, 1921. Pin and like wrenches.- Wrenches of the kind fitted with curved arms formed with projections as 3 for engaging slots in the periphery of a round nut, or pins as 10 for engaging spaced apertures in the nut, are constructed with the curved arms formed of two or more parts 1, 4, jointed together by means of pivots 2 and adapted to embrace one-half or less than one-half of the nut, so that the curved part may be conformed to the cylindrical surfaces of nuts of different sizes. The parts 1, 4 are preferably pressed together by a helical spring 6, or by a spring of other form such as a bowed spring. In a modification, the part 4, Fig. 7, is fitted with an adjustable curved part 9, which renders the spanners more readily adjustable to nuts of different sizes. Two or more pivots 2 may be provided around the arc-shaped parts.