baber/WOPTO huggingface dataset:
Patent GB-994969-A (GB)
Title: Mining apparatus
Inventor: PATTS MICHAEL CHARLES
IPC: E21D23/00
Filed: 1961-02-24
Abstract: 994,969. Advancing mine roof supports. DOWTY MINING EQUIPMENT Ltd. May 16, 1962 [Feb. 24, 1961], No. 6921/61. Addition to 823,127. Heading F1P. The parent Specification is modified, in a first embodiment, in that all the jacks connected between the base members of both types of roof supports 4,5 and the conveyer 1 are omitted and each roof support is connected to each adjacent roof support by a double-acting jack 13, e.g. in the manner described in Specification 966,034, the two types of roof support 4, 5 being arranged in any desired order. In such an arrangement the conveyer 1 may be advanced by pushers which are separate from the roof supports. In an alternative arrangement each roof support is connected to only one adjacent roof support in the manner described in Specification 658,998. In a second embodiment the roof supports are arranged in any desired order other than that disclosed in the parent Specification and they are advanced in the manner disclosed therein i.e. by jacks connected to the conveyer.
Patent GB-548570-A (GB)
Title: Method of forming and assembling vacuum tube supports
IPC: H01J5/32
Filed: 1941-05-30
Abstract: 548,570. Glass manufacture. STANDARD TELEPHONES & CABLES, Ltd. May 30, 1941, No. 6931. Convention date, June 8, 1940. [Class 56] [Also in Group XXXVI] Vacuum tube electrode supports are formed by heating a flange of glass or other vitreous material, punching out a part or parts of the softened material, forming a bead of glass or other vitreous material on a rod intermediate its ends, assembling such a rod in each opening in the flange with the bead adjacent the opening and heating the flange and beads to seal them together. In Fig. 1, a glass tube 12, with flange 13, is carried by a ring 31 rotatable in a ring 30 ; burners 39, 40 soften a local area of the flange, and the tube 12 is then rotated to move the softened area between cutters 35, 37 carried by fixed and movable arms 34, 36 of a punch which then punches a hole 14 in the flange, or a notch in the edge of the flange. Markers 32 on the ring 31 co-operate with an indicator 38 on arm 34 for positioning the parts. The flange may be locally heated at a number of points at which holes are punched simultaneously, or the entire flange may be softened. Electrode supporting rods 15, Fig. 5 of metal such as W or Mo, are provided with beads 17 preferably formed by fusing lengths of glass tube on the rods, centrally increasing the size of the beads by wrapping cane glass around them, and shaping the beads by means of a graphite paddle 21, Fig. 5A; further beads 16 may be provided spaced from the beads 17. Such a rod 15 is then placed in each hole 14, with the flange of the bead 17 on either side of the flange 13, and the whole is placed within a stem 10 of slightly larger diameter than the flange 13, and the flange 13 is sealed to the beads 17 and stem 10 by means of inner and outer sets of burners 42, 40, Fig. 6. Simultaneously a strengthening ring 20 may be sealed to the beads 16 by similar inner and outer sets of burners. The rods 15 may have offsets, and the tubes 10, 12 and flange 13 may be other than circular.
Patent GB-420737-A (GB)
Title: Improvements in and relating to cases for packing fresh fruit
IPC: B65D43/02
Filed: 1934-03-05
Abstract: 420,737. Fruit cases. BURNS, H., 19, Malane Street, Ormond, Victoria, Australia. March 5, 1934, No. 6936. Convention date, April 22, 1933. [Class 18] A fruit case incorporates light resilient slats 8 initially flexed as shown, and straightening out as the contents shrinks. These are retained in position by battens 7 fixed to the ends of the case and bearing on cleats 9 attached to the slats. Cleats 6 on one side and cleat 10 on an end cause spacing of the cases when packed and ensure ventilation.
Patent GB-342562-A (GB)
Title: Improvements in cocks
IPC: F16K1/04
Filed: 1930-03-03
Abstract: 342,562. Valves and cocks. LEBRERO, D., 11, Via B, Strozzi, Genoa, Italy. March 3, 1930, No. 6975. [Class 135.] Light valves; connecting to vessels.-A cock for metal casks or other receptacles conveying chemical products &c. comprises a cylindrical body 1 which, at its inner end 2, 4, is threaded and flanged for screwing into a ring nut 5 on the receptacle A, and also provided with a hinged flap closure 6 opening only outwards. A discharge outlet is provided by parallel transverse slots 9. A guide ring 11 fixed within the front part has a projecting tooth 13 engaging a guide groove 14 in a movable valve plug 15 which is shown in the open position. For closing, the plug 15 is pushed inwards by manipulation of the knob 17 and is then turned, the tooth 13 entering the helical groove 16 and forcing the valve 12 on to its seat 8. For transport, further turning of the knob 17, after the closed position is reached, unscrews the body 1 from the ring 5, the body being thereupon pushed inwards into the receptacle until the screwed part 18 of the handle engages in the ring 5 with a washer 19 forming a tight closure joint. The check flap valve 6 prevents adulteration by the admission of other liquids.
Patent GB-100734-A (GB)
Title: A Strengthening Cover for Diving Dresses.
IPC: B63C11/02
Filed: 1916-05-17
Abstract: 100,734. Dragerwerk H. & B. Drager. June 19, 1915, [Convention date]. Divers-dress.-A, cover for preventing bursting of a diving-dress when inflated consists of a sackshaped net a of hemp rope, wire rope, or chain links, adapted to be fastened to the neck or headpiece of the dress b and preferably tapering towards the foot. The cover is used when the dress is to be inflated in order to cure the effects of excessive pressure on the diver. Specification 7228/15 is referred to.
Patent GB-476717-A (GB)
Title: Improvements in tanks or armoured vehicles
IPC: F41H7/04
Filed: 1937-03-10
Abstract: 476,717. Armoured vehicles. RENAULT, L. March 10, 1937, No. 7077. Convention date, May 14, 1936 [Class 92 (i)] A tank or armoured vehicle body comprises two longitudinal girders 1, 2 of inverted U-shape which protect the endless tracks 3, the girders being braced by end pieces 5, 6, and by an upper plate 12 extending the full width of the tank and supporting the gun turret 14.
Patent GB-101271-A (GB)
Title: Improvements in or relating to Means for Holding and Releasing Ships Boats, Rafts and the like.
Inventor: PHILLIPS GERARD JOHN
IPC: B63B23/18
Filed: 1915-07-29
Abstract: 101,271. Phillips, G. J., and Keller, L. A. July 29, 1915. Boat and raft raising, lowering, disengaging, securing, and supporting gear.-Relates to apparatus of the kind in which chocks are controlled by floats such as are described in Specification 25477/12. The boat a is mounted by half-trunnions b<1> on pivots b, which are supported so that they may move in vertical slots in the standards c. The pivots b are shown carried by slides 12, which are normally held up by levers 14 secured by catches 16. The boat keel rests on the cranked bar 10, carried by the pivots so that it may swing freely, and the boat sits in the chocks d, which are hinged so that, when released, they fall away in the direction of the arrows. The boat is held in the chocks by locking-bars f, the lower ends of which are formed as pawls 32. The boat is carried by luffing davits which tend to fall outboard and are fixed together by toothed sectors and pinions on a common shaft. The movement of the davits is controlled by a dash-pot. The catches holding the various parts are released by rocking a central shaft 2. This may be effected by a compressed-air cylinder 4 or by electric or other means, or by a hand-operated lever 1, or by the float g. The compressed-air or other means may be controlled from the bridge or other part of the ship, and the boats may be released singly, or in sets, or all together. When the shaft 2 is rocked, the levers 30 are tripped, which releases the locking-bars f and allows the chocks to fall away; simultaneously, pins are withdrawn to release the levers 14 and allow the pivots b to move down in their slots, thus enabling the boat to swing outward and be lowered. Ratchet or other gear may be provided for imparting a positive motion to the davit arms in case of a heavy list on the ship. The boat is released automatically when it is water-borne. Specifications 11032/15 and 101,520 also are referred to.
Patent GB-758123-A (GB)
Title: Process for production of alumina
Inventor: PORTER JOHN LEMOYNE
IPC: C01F7/08
Filed: 1954-03-11
Abstract: Alumina is extracted from ores containing trihydrate and monohydrate alumina, the major portion, e.g. 70 to 95 per cent, of the caustic-soluble alumina being trihydrate, by calcining said ore to a residual ignition loss as determined by a stated method of 2 to 5, preferably 2.5 to 4 per cent by weight of the ore and digesting in a caustic alumina solution at below 350 DEG F. to obtain a liquor having an Al2O3/NaOH ratio of at least 0.750, preferably 0.800 to 0.850.  The precalcination inhibits reversion of the more soluble trihydrate to the less soluble mono-hydrate. Suitable aluminas are West Indian bauxites and laterites.  The particles are to be calcined evenly, e.g. by means of a hearth furnace or in a fluidized bed or flash calciner, suitably at 400 DEG  to 550 DEG C., preferably 450 DEG  to 525 DEG C.  Preferred temperatures for the digestion are 140 DEG  to 170 DEG C.; the Al2O3/NaOH ratio in the liquor used for digestion is normally 0.350 to 0.400 and the NaOH concentration 120 to 160, preferably 140, grams per litre; a suitable digestion time to ensure adequate desilication is 20 to 60 minutes; Al2O3/NaOH ratos in the final liquor up to 0.954 are specified.  Examples are given.
Patent GB-1261812-A (GB)
Title: Containers with safety closure members
IPC: F16J13/24
Filed: 1969-02-10
Abstract: 1261,812. Pressure doors. FRIEDRICH UHDE G.m.b.H. 10 Feb.,1969 [8 Feb., 1968], No. 7156/69. Heading F2P. A high pressure container 2 for withstanding internal pressures of up to at least 10,000 kp/cm<SP>2</SP> at temperatures of up to 250‹ C., comprises a closure member 1 which has spaced lugs 7, which are adapted to engage beneath similar dogs 7 integral with the wall of the container in the manner of a bayonet fastening, and an undercut shoulder 9 around its lower edge which, when the container is closed by the closure 1, extends below a frustoconical surface which connects smaller lower and larger upper cylindrical internal surfaces of the container, the recess formed by the shoulder accommoding a seal comprising a resilient backing ring 35 of high strength metal, two sealing rings.36 of plastically deformable material, and an elastic sealing element 37. In order to maintain the sealing rings pressed against the closure 1 a ring 38, having a nose 40 which projects into a recess in the ring 37, is screwed to the base of the closure 1. A bearing ring 31 is provided in a recess in the frusto conical portion of the container wall, and a venting bore 41 leads to a screwed connector 43. Apparatus for handling the closure 1, comprises a base 19 into which the container 2 is let and which supports a rotatable column 20 which carries an arm 21 which supports a. hydraulic cylinder 22 having a piston which is connected to a spacer 24 adapted to engage the closure 1. When the closure is swung in position and lowered into the container a fixed rack, (not shown), meshes with a toothed rim segment 25 on the closure to turn the latter through a distance equal to half the pitch of the lugs and dogs 7, 13, and. lock the closure in the container. The closure has a recess 3 which increases the internal volume of the container and a vent bore 4.
Patent GB-123886-A (GB)
Title: Improvements in and relating to Turret Lathes.
Inventor: JACHIMOWICZ SZYMON
IPC: B23B3/16
Filed: 1918-04-29
Abstract: 123,886. Jachimowicz, S. April 29,1918. Lathes.-In a turret lathe having the turret 3 mounted on a shaft 2 parallel with the lathe spindle 32, the tools 5, 25 are carried on lugs 4 projecting from the turret 3. The lugs 4 carry plates 38 sliding between adjustable stops on a bracket carried by a pivoted plate 8, and adjustable by a screw 11 to give a transverse feed to the tool 5 when desired. The longitudinal working feed of the turret is by a screw 20, coacting with a split nut 31 operated through a handle 41, and disengageably attached to the turret at 21. The turret is indexed, when withdrawn by a lever coupled to the eye 40, by a tooth 23 on a disk 24 on the turret shaft 2 engaging with an inclined pivoted pawl 27. At the commencement of its forward movement, the shaft 2 is guided by a spring- pressed pin 37 engaging one of the slots 33. An adjustable stop is provided to limit the motion of the plate 8, which may be actuated by a spring- controlled lever and link instead of by the screw 11. Adjustable gauge stops 6 are provided to engage with a fixed stop 7 and limit the inward movement of the turret.
Patent GB-398233-A (GB)
Title: Improvements relating to electric current generators
IPC: H02K7/18
Filed: 1932-03-10
Abstract: 398,233. Dynamos ; magnetos. LUCAS, Ltd., J., TURNER, E. O., and MASON, S. A., Great King Street, Birmingham. March 10, 1932, No. 7173. [Class 35.] Mounting rotors.- The rotor of a generator and the flywheel are mounted on a bush to form a unit which can be attached to the crank shaft of an internal combustion engine so that the flywheel is between the rotor and the engine, the stator which surrounds the rotor being secured to the engine casing. In the form shown, the sleeve a, secured to the crank shaft b by the nut c, carries the rotor e, flywheel d and a cam r for actuating the interrupter which, with the brush-holders, is mounted on the outer side of a sheet metal cover g bolted to the engine and supporting the stator f. The stator may have one or more permanent magnets or may have windings.
Patent GB-369732-A (GB)
Title: A new or improved pit prop
IPC: E21D15/52
Filed: 1931-03-09
Abstract: 369,732. Mine props. BUTLER, A., of Mapperley Colliery Co., Park Hall Lane, West Hallam, near Derby. March 9, 1931, No. 7224. [Class 20 (ii).] Adjustable pit props are formed of section - bars, the upper bar 2 carrying depending side cheekplates 3 which are secured to its web and slotted at 7 to pass. over a bolt 8 fixed to the upper end of the lower member. Adjustment is made by opposed wedges 10 passing between the ends of the webs of the members, each wedge having a jawed end 11 adapted to allow passage of the other wedge and so shaped as to fill the aperture between the section-bars when pressed home. Subsidiary wedges 16 passing through apertures provided in the main wedges serve to retain these in position.
Patent GB-1181931-A (GB)
Title: A Reinforced Concrete Element for Roofs or Flooring
Inventor: BJORHAAG NILS GEORG
IPC: E04B7/22
Filed: 1968-02-14
Abstract: 1,181,931. Reinforced concrete roofing or flooring elements. N. G. BJORHAAG. 14 Feb., 1968, No. 7243/68. Heading E1W. A reinforced concrete roofing or flooring element comprises a channel shaped elongated lower part 1, Fig. 7, having side and end walls each being reinforced by metal rods and an upper part in the form of a flat concrete slab 2 which is connected to the lower part along the upper side wall edges thereof, a layer 8 of heating insulating material such as expanded cork being provided between the slab 2 and the side walls of the part 1. A compressible rubber strip 26 may be interposed between the slab 2 and the layer 8 to provide a measure of sound insulation between the slab 2 and the part 1, but the slab 2 may directly engage the layer 8, Fig. 1 (not shown) and the layer 8 then may be provided with a V-shaped slot 28, Fig. 9 which closes as the load on the slab increases, with the purpose of providing a measure of sound insulation. Vent holes 15, Fig. 6, may be provided through the insulating material 8 so that the interiors of adjacent elements may communicate and so that the interior of an element at the edge of a roof may communicate with the atmosphere, permitting a flow of air through the roof in response to winds or as a result of convection currents when the roof is sloped, as in Fig. 5 (not shown). The interiors of the channels may be partly filled with insulation. A lath 25 in an opening in the bottom of the part 1 may be provided to reduce the flow of heat through the bottom over a supporting wall 18.
Patent GB-205432-A (GB)
Title: Improvements in or relating to agitating or stirring devices
IPC: B01F15/00
Filed: 1923-03-13
Abstract: 205,432. Jackson, W. J. Mellersh-, (American Abrasive Metals Co.). March 13, 1923. Drawings to Specification. Stirrers.-A stirring paddle or blade, more especially for fine divided material or corrosive liquids, is provided with a surface layer of granular, wear-resisting material. The blade may be made of iron, lead, bronze, or other alloy and is cast in a mould the surface of which is lined with corundum, carborundum, alundum, or other refractory material.
Patent GB-1059615-A (GB)
Title: Prestressed concrete
IPC: C22C38/02
Filed: 1965-02-19
Abstract: Prestressed concrete is reinforced with high tensile steel of the following composition:- <TABS:1059615/C6-C7/1> the balance, apart from impurities, being iron.
Patent GB-557714-A (GB)
Title: Method of making abrasive articles
IPC: B24D18/00
Filed: 1942-05-29
Abstract: 557,714. Metal-bonded abrasives. CARBORUNDUM CO. May 29, 1942, No. 7335. Convention date, Nov. 7, 1941. Drawings to Specification. [Classes 70 and 87 (ii)] Abrasive particles, e.g. diamond grit, boron carbide, silicon carbide, or alumina, are bonded in metal, e.g., using powdered copper and tin &c. by mixing the abrasive and metal powder, compressing, e.g., at up to 30,000 lbs. per sq. in. and immersing in a molten salt bath, e.g., comprising sodium and calcium chlorides, to sinter the metal powder. The salt bath ensures rapid heating and protection from oxidation during heating and a coating of the salt gives protection from oxidation during cooling after removal from the bath, the salt coating being dissolved off after cooling as by boiling water.
Patent GB-540390-A (GB)
Title: Improvements in letter-boxes and collecting bags therefor
IPC: A47G29/12
Filed: 1940-04-23
Abstract: 540,390. Relleasable fastenings; locks. BAKRY, A. April 23, 1940, No. 7337. [Class 44] [Also in Groups XVII and XIX] A letter-box 1, Fig 2, of the kind having a hinged bottom 7 Fig. 7 which, with the hinged top, 33, Fig. 12, of a collecting bag (not shown) moves downwardly automatically when the mouth frame of the bag is slid into place beneath the bottom frame of the box so that the contents fall from the box into the bag, and in which both hinged lids are closed by one manual movement, is provided with locks for the two lids actuated by the movement of sliding the bag mouth frame with the bottom frame, and with means for indicating times of collection, and for indicating the time of the next collection actuated automatically for the clearing process, the clearing also exposing a stamp from which the postman can take an inprint to indicate that he has cleared the box. The securing means for the letter-box bottom consists of two walls 9 each comprising three tumblers 10, 11, 12 Fig. 8. engaging an eyelet 13 on the door 7 and pressed by springs 14, 15, 16. against the.action of which the tumblers are.slid by the tip 22, Fig. 14, of the bag frame. The tumblers are so shaped that they must be displaced to different extents to permit opening. A security catch 23 holds the middle leaf 11 and this holds leaves 10, 12; it is released when pushed up against the frame of its spring 24 by the insertion of the bag frame. The tumblers are also so connected that the pressure of the spring of one leaf will also hold the two others. The bag lid, and with it the box bottom, are closed by actuating handles 36. The bag lid 33 is locked by locks 39 Fig. 12 fixed to the bag frame and encased so that they cannot be tampered with through the material of the bag. They are opened by two pieces 41 on the bottom frame of the box each of which swings three levers 42, 43, 44 off the bolts 45 and so release it and then pushes it in the direction R2 till a rib 47 of bolt 45 comes opposite a recess 18 in the side of the bag lid and releases the lid. The letter-box has an inner and an outer casing connected by the letter chute leading from an insertion opening. Front panel 54 Fig. 2 has a time-table frame 55 which by means of inter-chargeable plates 56 shows the hours of clearance. The time of the next clearance round is shown through a window 59 Fig. 18 on a dial 60 rotated through a sprocket 71 by pressing down a lever 69 by the postman. A ratchet 65a releases a door 61 carrying on its rear side a stamp 72 Fig. 21 inked from a pad 67, and from which the collector may take an impress to show that the box has been cleared. The opening of the door of the box sets free two levers 63, 64, the first of which releases the top of an opening 62 through which bar 69 can be actuated and the second of which releases door 61 for actuation by ratchet 65a.
Patent GB-575915-A (GB)
Title: Improvements in or relating to range finders
IPC: G03B13/20
Filed: 1944-04-20
Abstract: 575,915. Range-finders. KODAK, Ltd. April 20, 1944, No. 7343. Convention date, May 21, 1943. [Class 97 (i)] A range-finder comprises a light-refracting prism 1 of glass or transparent plastic having a pair of angularly disposed light-entrance faces 2, 3 and a pair of angularly disposed lightentrance faces 4, 5 arranged one above the other to form a split field, the faces 2 and 4 being parallel and the faces 3 and 5 being parallel. The face 4 is provided with a pointer at 6 and the face 5 with a series of lines registering with a scale 8 for reading the distance of the object ranged upon. The faces are so angularly disposed that the images of an object at infinity coincide at 6, while near objects give a split image such that when one part is made to appear at the point 6 by movement of the eye, the other point coincides with the scale line 8 indicating the distance. The rangefinder may be mounted on a camera and all surfaces other than the working faces may be painted to prevent the entrance of any unwanted light.
Patent GB-160080-A (GB)
Title: An improved process for the extraction of gum from grass trees
IPC: C09F1/00
Filed: 1920-03-12
Abstract: 160,080. Pooley, H. J., and Strevens, J. L. March 12, 1920. Resins.-The gum or resin is extracted from the outer part of grass trees (Xanthorrhoea) by the use of an alcoholic solvent prepared from the inner core of the tree. The core is disintegrated, mashed with water, filtered, fermented, and distilled to obtain alcohol. The outer part of the tree is then treated with this solvent either by immersion or percolation, and the gum is recovered from the resulting solution by distillation, preferably under reduced pressure. The purified gum can be used for the manufacture of varnishes and lacquers.
Patent GB-609359-A (GB)
Title: An improved method of securing a rod in a sleeve
IPC: A47J37/08
Filed: 1946-03-12
Abstract: 609,359. Jointing by stamping. CORTEEN, B. M. March 12, 1946, No. 7675. [Class 83 (iv)] [Also in Group XIV] In a method of securing a rod in a sleeve, a groove 22 is formed in the rod 10 and a groove 21 in the outer surface of the sleeve 20, the rod is inserted in the sleeve so that the two grooves are in alignment and the sleeve is subjected to end pressure to collapse the metal on the inside of the groove 21 into the groove 22. By selecting the tolerances and the degree of collapse of the groove 21 the joint can be made rigid or left so that the rod and sleeve are relatively rotatable. The invention is shown applied to making a soap holder, where it is desired to polish the U-shaped rods 10 and the straight connecting bars 11 before assembly. The bars 11 carry a number of grooved projecting sleeves into which the ends of the rods 10 are inserted and then secured by collapsing the grooves of the sleeves so as to leave the rods 10 free to rotate in the sleeves. The structure formed by members 10 and 11 may thus be collapsed for packing, but is normally held as shown by end stays 12 screwed into one of the bars and passing through the other to form a hanging device 13.