baber/WOPTO huggingface dataset:
Patent GB-220359-A (GB)
Title: Process of separating hafnium and zirconium
IPC: C01G25/02
Filed: 1923-05-09
Abstract: The separation of hafnium from zirconium is effected by partially precipitating the oxides from the mixed salts or by partially converting the mixed oxides into other compounds or by a combination of both processes, hafnium being more basic than zirconium.  In any case it is important to remove impurities such as titanium, niobium, tantalum aluminium and iron before the fractional separation, the removal being effected by means known for the purification of zirconium from those impurities.  The mineral may be fused with potassium bifluoride or sodium bisulphate to obtain mixed double fluorides or mixed sulphates. Impurities are removed and a base such as ammonia or sodium hydrate or a salt having a similar action such as sodium acetate or thiosulphate is added in such proportion that part only of the zirconium and hafnium are precipitated as hydroxides, the mother-liquor being richer in hafnium than the original solution and the precipitate poorer; the precipitate is dissolved in acid and again partially precipitated to obtain a purer zirconium hydroxide, and the mother-liquor is partially precipitated again to obtain a mother-liquor still richer in hafnium and so on until the separation is carried far enough, when the hafnium solution is precipitated with excess of reagent or hydrolyzed by superheated steam, and the oxide may be converted into chloride and reduced to hafnium or an alloy of hafnium and zirconium by any method known for reducing zirconium chloride, for instance by sodium vapour. Alternatively, a solution of zirconium and hafnium salts is precipitated with excess of reagent or hydrolyzed with superheated steam to obtain the mixed hydroxides, and the precipitate is fractionated by incompletely dissolving in an acid such as hydrochloric acid, the solution being richer in hafnium than the original solution, and these operations being repeated as often as desired.  In another alternative a solution of mixed zirconium and hafnium salts is partially precipitated by a reagent, and the mother-liquor which is proportionately richer in hafnium is then completely precipitated, the mixture of hydroxides treated with a deficiency of acid to obtain a solution enriched in hafnium, the operations being repeated as above described.  In another modification a mixture of the oxides or hydroxides of hafnium and zirconium is partially converted into chlorides by means of carbon tetrachloride and chlorine, the chlorides containing more hafnium than the original mixture.  The chlorides may be again converted into the oxides.
Patent GB-454390-A (GB)
Title: Improvements in and relating to partition or building blocks
IPC: E04B2/18
Filed: 1935-04-26
Abstract: 454,390. Building-blocks. ANTHONY, T. H., Stanley House, Morley Road, Chaddesden, near Derby. April 26, 1935, No. 12510. [Class 87 (i)] Partition or build ing blocks of the kinc having one or more spaces 13 open at the base, are providec along the top and one end wall with a tongue 17 and one or more holes 20 in the top tongue communicating with the interior An end and bottom groove 18 are also provided for adjacent blocks to interlock. Mortar is spread only along each side of the top tongue.
Patent GB-872973-A (GB)
Title: A method of manufacturing selenium rectifiers
IPC: H01L21/08
Filed: 1960-04-08
Abstract: 872,973. Semi-conductor devices; electrodeposition. LICENTIA PATENT-VERWALTUNGS-G.m.b.H. April 8, 1960 [April 13, 1959], No. 12561/60. Classes 37 and 41. A method of applying a layer of nickel selenide intermediate the carrier electrode and the selenium layer in a selenium rectifier comprises simultaneous galvanic deposition of nickel and selenium on the carrier electrode preferably followed by a heat treatment. In a preferred embodiment an aluminium carrier electrode is surface roughened, e.g. by sand blasting, and then suspended and connected as the cathode in an electrolytic bath composed of about 100 litre water, 2500 to 3000 gms. selenium dioxide, about 1500 gms. nickel ammonium sulphate and 300 gms. nickel sulphate with a nickel plate as the anode. The bath is set to pH value between 2.5 and 3.5 by means of ammonia and the temperature controlled to between 55‹ and 70‹ C. and the deposition carried out with a current density greater than 1.5 amps/(dm.)<2>. A flocculent white coat which forms on the cathode is removed by periodically striking the aluminium plate in the direction of the plane of the sheet. After the deposition the sheet is rinsed in water and dried in hot air and then preferably heated for from 4 to 7 minutes at a temperature of between 260‹ and 280‹ C. before applying the selenium layer and the counter electrode. The strength of the electrolytic bath may be maintained for continuous treatment of carrier electrodes by the addition of selenium dioxide as the selenium is deposited, the consumption of nickel being equalized by dissolution of the anode.
Patent GB-572146-A (GB)
Title: Improvements in bonded resilient fibrous material for upholstery and like purposes
IPC: B68G1/00
Filed: 1943-08-06
Abstract: A bonded resilient fibrous mass is produced by spraying polythene, to which polyisobutene may be added, in powder form through a hot zone on to a loose intermingled mass of fibres.  The fibres may be horsehair, pigs' hair, algerian grass, coconut fibre or synthetic fibres and may be contained in a tray or shaped in a mould.  A method of powdering solid polythene is given.
Patent GB-1077115-A (GB)
Title: Lampholder
Inventor: HEATH CLARENCE WILLANS
IPC: H01R33/09
Filed: 1965-03-25
Abstract: 1,077,115. Lampholders. CARR FASTENER CO. Ltd. Feb. 1, 1966 [March 25, 1965], No. 12716/65. Heading H2E. A lampholder comprising an insulating body 2 with a lamp-receiving cavity 2 is pressed through a panel aperture and retained by a flange 4 extending from the forward face of the body 1 and by resilient fingers 3 located behind the flange 4. A plastics sealing ring 16 may be located between the flange 4 and the fingers 3 and an additional set of fingers 5 may extend from the forward face of the body 1 to enable its insertion in the aperture from either side of the panel. A capless lamp is retained in the cavity 2 by a springy clip comprising opposed arms 9 and a base 8 secured by lugs to the floor of the cavity 2. Two contact blades (10) (Figs. 4 and 5, not shown) are retained in the cavity 2 by outwardly-bent end portions (13) overlying its forward edge and by tongues (12) engaging its floor, tail-pieces (15) of the contacts being wrapped around wire leads and extending through channels in the body portion 6. Alternatively, the body 1 may be adapted to receive a bayonet or screw-cap lamp.
Patent GB-130753-A (GB)
Title: Improvements in Knitted Fabrics and the Method of Producing same.
Inventor: STIBBE GODFREY
IPC: D04B1/10
Filed: 1918-08-06
Abstract: 130,753. Stibbe, G. Aug. 6, 1918. Knitted fabrics.-A double fabric comprises two independently knitted webs a, b, one overlying the other, united by an independent binding-thread c, the binding-loops of which may or may not be formed into stitches with the loops of the webs. To reduce or eliminate the lateral elasticity of the fabric and render it suitable for cloth, an unknitted restraining thread d is laid in between the walls of the fabric. The, fabric is formed on a multifeed circular machine having two sets of needles, e.g. cylinder and dial, the dial needles alone taking yarn at m, Fig. 3, at a feeder 1 to form the web b. whilst the cylinder needles alone take yarn at u at the feeder 2 to form the web a, the dial needles being projected at the feeder 2 to engage the binding-yarn c at o, which binding-yarn is laid below the latches of the cylinder needles and is knocked over without forming stitches. During the advance of the dial needles at the next feeder, the loops of binding-yarn are cleared and are knocked over without forming stitches. The restraining-yarn d is supplied at t. The dial and cylinder needles may be operated to produce ordinary rib fabric as a continuation of the double fabric, as indicated at l, Fig. 2, e.g. to form the ribbed end of a shirt or the waist of a vest. The binding-yarn c may be introduced in every course or less frequently. A machine for producing the fabric is described in Specification 7191/19.
Patent GB-256344-A (GB)
Title: Improvements in presses for expressing oils or other liquids from materials containing the same
IPC: B30B9/26
Filed: 1925-05-16
Abstract: 256,344. Marks, E. C. R., (Career, F. S.). May 16, 1925. Fats and fatty oils, extracting by pressure.- A press-plate for oil or other presses comprises a perforated sheet-metal face plate. a perforated disc-like supporting member, and an intermediate disc of wire mesh secured together to form a unit as distinct from a known arrangement in which wire mesh is arranged between two unconnected perforated plates. In the pot-press shown, having a taper 12 at the upper part of the bore of each pot 10 as described in Specification 144,277. press-plates 22. 24 are secured respectively to the platen 16 and to the slidable, pot bottom 26, filter-pads 20 of camel's hair being arranged in the pressure faces. Each plate comprises a supporting member S with a groove 60a for the wire-mesh disc 66, and with a groove 60<b> in which the perforated sheet metal face plate 68 is secured as by a weld 70. The oil expressed from the copra, ground cocoa beans, &c. passes through the filter pad 20, face plate 68 and wire-mesh 66 to circular grooves 80 in the supporting member, these grooves being connected by holes 86 to wider concentric grooves 82, from which the oil is discharged by radial grooves 88. Prior to insertion in the supporting plate the wire-mesh disc 66 is flattened as by passage between pressure rolls. The press-plate 24 has one or more grooves 50 which become filled with pressed material and pack the plate against the bore 14 of the pot 10. It is secured to the bottom 26 bv a central threaded bolt welded in the supporting plate and locked by nuts in a recess in the bottom 26. The pressplate 22 is removably secured to the platen 16 by riveting thinned edge-parts of the plate in notches in holding blocks 40 detachably secured to the platen. One of the blocks 40 serves as a stop for the pot 10 below as it is slid into the press from the rack, a lug 10<a> on the handle 10<b> of the pot engaging the block.
Patent GB-384541-A (GB)
Title: Improvements in refrigerating cabinets
IPC: F25D19/02
Filed: 1932-05-04
Abstract: 384,541. Refrigerators. TEVES, A., 23, Gustavsburgstrasse, Frankfort-on-Main, Germany. May 4, 1932, No. 12876. [Class 29.] A refrigerator cabinet is cooled by a refrigerating machine mounted upon a removable oblique wall 4 extending over the whole or a part of the back of the cabinet, the evaporator being disposed on the inside of the wall and the other parts of the machine on the outside. A casing 6 encloses the parts on the outside of the wall.
Patent GB-726462-A (GB)
Title: A method of producing a favoured direction of magnetisation in permanent magnets made from oxides of metals
IPC: C04B35/26
Filed: 1953-05-08
Abstract: 726,462. Magnetic compositions. ART. - GES. FUR UNTERNEHMUNGEN DER EISEN - UND STAHLINDUSTRIE. May 8, 1953 [May 10, 1952], No. 12927/53. Class 38 (2). A permanent magnet having a favoured direction of magnetization with a relatively high value of (BH)max. is made by sintering a mixture of oxides to a coarse-grained powder, pulverizing to a fine powder and compressing, a magnetic field being applied while the mould is being filled with the powder or during the compression. The final magnet contains 5-60 per cent mol. barium ferrite, the starting materials preferably comprising 10-20 per cent, BaO and 80-90 per cent Fe 2 O 3 , measured by weight.
Patent GB-1461346-A (GB)
Title: Machine for cooling metal sheets or plates
IPC: C21D1/00
Filed: 1974-03-22
Abstract: 1461346 Cooling rolled products UNION SIDERURGIQUE DU NORD ET DE L'EST DE LA FRANCE 22 March 1974 [26 March 1973] 12974/74 Heading B3M A machine for cooling metal plates or sheets issuing from a rolling mill includes a casing 12 which surrounds both a plate T and guide and support rollers 10a, 10b, 11a and 11b, cooling water being circulated within the casing. The water inlets 16a, 16b and outlets 17a, 17b extend across the width of the plate and may communicate with the casing adjacent the rollers or between them. Alternatively, water may be supplied through radial passages in the rollers from their hollow interiors. The water, after cooling the plate, may be pumped through a heat exchanger and be recirculated. If the machine is to be used on occasions for conducting plates without the cooling water being present, the casing and rollers may have a cooling jacket and cooled interiors respectively. The width and height of the casing may be adjustable for different sized plates. The cooling water, instead of flowing longitudinally, may flow transversely from the centre of the casing outwardly, or from one edge to the opposite edge.
Patent GB-118284-A (GB)
Title: Improvements in or relating to Devices for Removing Crust Formation in Rotary Kilns.
Inventor: VOGEL-JOERGENSEN MIKAEL
IPC: F27D25/00
Filed: 1918-08-10
Abstract: 118,284. Jorgensen, M. Vogel-. Feb. 28, 1917, [Convention date,]. Incrustation, removing.-A device for removing incrustation from the wall of a rotary kiln is adjustable towards and away from the surface on which it operates, so that it acts after the manner of a paring-tool. The apparatus comprises a framework 5 mounted by means of wheels 1 on front and rear rails 2, and a movable head 8 longitudinally adjustable on a bed 11 by an endless chain 6. The rod 9 carrying the tool slides through a bearing 12 on the framework, and is angularly adjustable in the head 8 by means of a worm and worm wheel. The lateral movement for setting the tool in contact with the wall to be scraped is effected by a hand-wheel 16, which operates, through bevel gearing 17, 18, screwed shafts passing through nuts in the framework 5. Rails 4 prevent lifting of the rear end of the apparatus. Instead of mounting the tool on the movable framework 5 it may be carried by a rock shaft parallel to the axis of the kiln so that it moves in a curved path towards or away from the lining. The setting of the tool may be automatically effected, for example by an electric motor controlled according to the resistance encountered by the tool. The machine may be adapted for use at any one of a number of kilns.
Patent GB-151053-A (GB)
Title: Improvements in rocket line-throwing apparatus
IPC: F42B12/68
Filed: 1919-05-26
Abstract: 151,053. Hall, J. C. May 26, 1919. Line-throwing apparatus. - In rocket linethrowing apparatus of the type described in Specification 24131/09, the grapnel arms 7 are pivotally mounted on a rocket tube 2 at a position adjacent to its centre of gravity, and means dependent on the distance covered by the rocket in its flight are provided for projecting the arms. The arms 7 are pivoted to a ring 5 fixed to the rocket tube, at, say, about one-third of its length from the cap 3, and are connected by spring connexions 8, 24 to the ring 10 slidably mounted on the rocket tube. The arms are normally held in the folded position, as shown in dotted lines, against the action of the projecting springs 11, by the pivoted latch 12 engaging the ring 10. The latch is adapted to be relased by the cam lever 14, which is connected by a chain 15 to the lower end of a spring-mounted rod 16, which is twin connected by a flexible metal wire or rope 19 to the life-line 20. The spring 18 on the rod 16 prevents the release of the latch until a certain tension is on the line 20; which may be when the rocket has reached the limit of its flight, or when it has reached such a distance that the weight of the line overcomes the spring. It may also be released by a direct pull on the line, when the rocket has landed. The projecting movement of the ring 10 is limited by stem 22 slidably connecting the ring 10 to the fixed ring 13 under the control of springs 23. The pennant or tail 19 serves to maintain the elevation of the rocket point, and the tail and the life-line 20 are provided at intervals with hand-grips or whippings of marline.
Patent GB-691195-A (GB)
Title: Apparatus for the manufacture of pneumatic tyres
Inventor: SMITH HAROLD
IPC: B29D30/32
Filed: 1950-05-26
Abstract: 691,195. Tyre-building apparatus. DUNLOP RUBBER CO., Ltd. May 22, 1951 [May 26, 1950], No. 13253/50. Class 144(i). In a tyre-building apparatus comprising a flat-band forming drum 1, ply turndown is effected by a number of circumferentially spaced, outwardly inclined arms 16 of a device 9 located coaxially with the drum 1, the tips 16a of the arms lying on a common pitch circle and the arms 16 being engaged and forced radially inwardly for ply-turndown by a coaxial bead-setting device 10 on axial movement of the latter to apply a bead. Figs. 1 and 2 show a ply-turndown device 9 and beadsetting device 10, for one end of the drum 1, arranged on the driving shaft 2. The turndown device 9 comprises an annulus 14 fixed by brackets 13 and a ring 12 to a sleeve 11 slidably mounted on the shaft 2. The arms 16 are hinged to the annulus 14 and spring-urged to the outwardly inclined position shown. The bead - setting device 10 comprises a bead-carrying ring 30 bolted to the free ends of circumferentially spaced angle brackets 27 radially adjustably bolted to a ring 26 secured to a sleeve 24 which is slidably mounted on the sleeve 11. Handling rings 13a and 33 are respectively secured to the plyturndown and bead-setting devices. In operation, with the drum 1 stationary and a bead mounted on the carrying-ring 30, the turndown device 9 is moved towards the drum until stopped by an adjustable stop 22 secured to the shaft 2. In this position the arms 16 overhang the edges of the plies 19. The beadsetting device is then moved towards the drum and the bevelled inner periphery 32b of the carrying ring 30 engages the arms 16 and forces them radially inwardly against the action of the spring-loaded hinge 17, thereby causing the arm tips 16a to turndown the plies ready for application of the bead. In the final movement of the setting device 10, the carrying-ring 30 passes completely over the arms 16 and presses the bead on to the plies against the drum edge. The ply-turndown and bead-setting devices for the other end of the drum are similar to those described above but are mounted on an axial tubular supporting member which has a spindle arranged to be detachably supported in an axial bore in the end of the drum driving shaft. In this construction the ply-turndown device is fixed to the supporting member and the beadsetting device is slidable on said member.
Patent GB-132915-A (GB)
IPC: A47H1/142
Abstract: 132,915. Knigbt, C. H. Oct. 21, 1918. Curtains, drawing and suspending.-The curtain-drawing cords of bay and other windows with corners or angles are guided by pulleys arranged near the bends of the curtain-pole. The guidepulleys c for the cord f are mounted in the bent parts d of brackets a.
Patent GB-514435-A (GB)
Title: Improvements in or relating to means for mounting a view finder or range finder on aphotographic camera
IPC: G03B13/02
Filed: 1938-05-05
Abstract: 514,435. Photographic view and distance finders. NAGEL, H., and KODAK, Ltd. May 5, 1938, No. 13388. [Class 98 (i)] A view-finder or range-finder mount for cameras comprises a finder supporting plate pivotally connected to a base plate adapted to be attached to a part of the camera, and a manually-operable member mounted between the plates for adjusting the angle therebetween to compensate for parallax. As shown, the base plate 10, fixed to or detachably mounted on the camera body 1, has at its rear edge an arcuate projection 13 having a transverse arcuate cam 14 on its upper face. The'upper plate 15, to which the finder may be attached as by sliding it into grooves 30, is hinged to the front edge of plate 10 by forming a V-shaped ridge 16 on the upper plate 15 to engage in a groove 17 in the base plate 10, and sliding thereon a spring clip 18 of C-section to hold the edges together. A headed screws 22 passing through a plain hole 20 in plate 15, into a screwthreaded hole 21 in plate 10, serves as a pivot pin for a control lever 23 having an actuating knob 24. When the lever 23 is moved about the pin 22, a projection 26 on its underside rides over the cam 14, causing the plate 15 to' tilt about the hinge axis of the plates, the required angle of tilt being obtained by bringing the lever 23 into register with the desired reading on a distance scale 19. A pimple and dimple clicking indicator 28, 29 is provided between plate 15 'and lever 23.
Patent GB-150398-A (GB)
Title: Improvements in sparking plugs
IPC: H01T13/46
Filed: 1919-05-28
Abstract: 150,398. Morgan, T. May 28,1919. Sparking-plugs.-Relates to plugs of the type in which the sparking-plugs are enclosed in a chamber in the body part of the plug, the central conducting-bolt, the sparking-points, and the insulation being carried by a member which is removable in one piece from the body part of the plug. The invention consists in a special coinbination of parts in such a sparking-plug. The sparking- plug comprises a socket B carrying both electrodes and screwed to the body part A. The central stem C is secured in the socket B by means of two porcelain blocks E, D clamped against an internal flange 8 of the socket B between a flange 9 on the inner part of a central stem and a nut 11 screwed on the outer end of the stem. The block D is constructed with a large bottom cavity. The earthed electrode is formed of two points 7 projecting inwardly towards the central electrode from a ring 6 which is crimped into the mouth of the socket B.
Patent GB-364987-A (GB)
Title: Improvements in and connected with valve bags
IPC: B65D30/24
Filed: 1931-05-06
Abstract: 364,987. Valve bags. MERRICK, W. A., Station Road, Midsomer Norton, Somerset. May 6, 1931, No. 13439. [Class 94 (ii).] Slits or openings are formed in the valve of a valve bag to direct escaping air under or outside the filling nozzle &c. and may co-operate with air escape openings in a member attached to the valve. In the folded-in corner or valve 2 of a multi-ply bag 1 parallel slits 13 forming strips 15 are cut adjacent the transverse fold of the valve, the slits penetrating the outermost ply of the bag only. A strip of paper 3 having its corners cut to conform to the diagonal folds 5 of the valve is doubled on itself at 9 along one edge of a transverse aperture 12. After folding the strip longitudinally about the line 18 and gumming the outer surfaces of its transverse edges it is secured by the gum between the ply containing the slits 13 and the next ply thereto. When the bag is closed by the usual sewn seam, the longitudinal edges are seamed thereby. During the filling of the bag, air escapes through the aperture 12, between the parts of the strip and out through the slits 13. Slits cut diagonally in the longitudinal edges of the strip and extending to the fold line 9 may replace the slit 12. In a modification, the fold line 9a, Fig. 6, passes through the slit 12a and the folded strip is inserted between the laminations slit foremost, V-shaped notches 20 in the sides providing diagonals corresponding to the folds 5 of the valve. The edges of one part of the strip may be inclined as at 23 so that folding them on to the corresponding straight edges opens out the slit 12a. Two separate strips may replace the single folded strip, the upper strip projecting beyond the lower one and having its ends hollowed out or recessed. Specification 359,723 is referred to.