baber/WOPTO huggingface dataset:
Patent GB-919019-A (GB)
Title: Production of metal oxides
Inventor: EVANS ARTHUR WALLACE
IPC: C01B33/18
Filed: 1958-03-04
Abstract: Oxides of titanium, aluminium, zirconium or hafnium are prepared by reacting the corresponding halide with oxygen in the presence of a fluidized bed of inert solids which has a cross-sectional area at least that of a circle of 15 inches diameter and contains sufficient solid to conserve the heat from p  the exothermic reaction to render it self-sustaining.  The reaction is effected in the bed and the oxide product is for the most part discharged in entrainment with the outgoing gases.  The oxide accretion on the bed particles is maintained at or below 20% by weight of the inert solids material. The reactants are introduced, preferably separately, through a plurality of inlet ducts distributed across the bed cross-section and the inlet ducts are provided with constrictions each of which produces a pressure drop which is at least one half of the pressure drop from the bottom to the top of the fluidized bed.  The fluidized bed may be as described in Specification 761,770, i.e. the particle size should be from 40-1000 microns, and temperature of the bed is normally between 800 DEG  and 1300 DEG C.  A proportion of the ozide product forms as an accretion on the bed particles and accordingly a portion of the bed may be withdrawn and cleaned, for example by chlorination.  The reactants, namely the halide and oxygen are normally employed in stoichiometric amounts, but oxygen to chloride ratios from 0,75:1 to 4:1 may be employed.  Withdrawal of the bed solids may be employed as a cooling means since such solids may be withdrawn and cooled or fed at any temperature desired to obtain adequate cooling and adequate purging of oxide accretion from the bed particles.  The apparatus employed is described and claimed in Specification 919,020 and the orifices in the perforated base of the fluidized bed may be provided with means to bar ingress of the bed material to the fluidizing gas supply, as described in Specifications 724,193, 794,666 and 813,489.  According to examples (1) a vertical steel shaft furnace was provided with a perforated base fitted with manifolds feeding titanium tetrachloride and oxygen.  A zircon sand bed of 150 microns average diameter was preheated to 1100 DEG C. and the reaction temperature was thereafter maintained at 980 DEG C., overheating being prevented by feeding and removing zircon sand.  A minor quantity of water may be added to the oxygen reactant stream. (3) Aluminium trichloride and oxygen were separately fed to a fluidized bed of zircon sand which was maintained at 1000 DEG C. throughout the reaction by withdrawing zircon sand and feeding in cool sand.  Aluminium oxide of 0,07 microns diameter was obtained. Specification 849,140 also is referred to.
Patent GB-103924-A (GB)
Title: Improvements in and relating to a Machine for Setting Precious Stones in Holders, Preparatory to Cutting.
Inventor: BARKER REGINALD WALTER
IPC: B24B9/16
Filed: 1916-05-16
Abstract: 103,924. Barker, R. W., (Heller & Sons, L.). May 16, 1916. Gems, treating.-In an apparatus for use in securing a gem to a hollow holder 6 preparatory to cutting or polishing, a press is provided for forcing fluid wax or cement through a nozzle 5 which is inserted in the holder, and the gem 4 is supported in a mould 20. As shown, the press consists of a receptacle 3 for wax &c. communicating through ports with a chamber 14, which is formed with the nozzle 5 and is surrounded by a heating-coil 15. The receptacle is mounted on guides 2 and can be depressed to insert the nozzle in the holder by a lever 8, and the wax is forced out by a piston 17 operated by a lever 18. A cooling-coil 16 may be provided for preventing the wax in the receptacle from melting. The coil 15 may be made resilient to assist in raising the receptacle. The bevelled end of the nozzle engages a shoulder 19 in the holder. The gem is received by a conical depression 24 in a plunger 21 arranged in the mould, the depression centring the gem by engaging the girdle. The holder 6 is secured by a pivoted clamp 11 in engagement with the bevelled mouth 22 of the mould 20. Radial ribs 29 are formed on the holder to form keys for the wax. When the wax has filled the mould space, an indication is given by the escape of wax through the openings between the ribs. When the wax is set, the clamp 11 is released, and the holder with the gem is raised by raising the plunger 21 by a lever or pedal 25.
Patent GB-637654-A (GB)
Title: Improvements in or relating to methods of packing congealing substances
IPC: A01J21/02
Filed: 1947-03-13
Abstract: 637,654. Enclosing in bags; paper bags. LEVER BROS. & UNILEVER, Ltd. March 13, 1947, No. 7027. Convention date, July 24, 1940. [Classes 94(i) and 94(ii)] A method of packing a congealing substance such as margarine comprises pouring the substance in a liquid or semi-liquid state into a bag with leakproof seams made of a thin foil consisting of material (other than rubber hydrochloride) which is impermeable by the substance, e.g. foil made of vinyl resins, said bag having a flat base of pre-determined shape and size and joined without seams to one or more of the walls, or being so constructed that such flat base is formed by the action of filling, and closing the opening of the bag after filling by means of a leak-proof external seam. During filling at least two opposite sides of the bag may be held between flat surfaces to give the packed material the desired shape, the bag being left between said surfaces until the substance is sufficiently hard to retain its shape. A number of examples of bags suitable for use according to the invention are described, e.g. as shown in Specification 539,044. After filling, a bag is closed by tightly pinching the opening together, preferably along a straight edge, and joining the two pieces of foil, e.g. by using adhesives or agents which dissolve the material of the foil or by using thermoplastic foils joined by pressing them together by means of heated flat instruments. In one method to close a bag it is not quite filled and filling is preferably effected by putting the bag in a carton of the desired shape into which the material is poured. The sides projecting above the filling are now folded along the centre line (Fig. 22), the seam being then made by joining the edges. The projecting part can be folded over so that the bag fits into a carton which is not much bigger than the mould formed by the flat surfaces referred to above. When using a carton container the empty bag is placed in the carton after the latter has been folded into shape. Fig. 1 shows a cross-shaped piece of foil the arms 1 of which are folded up until they stand perpendicularly on the base, the adjacent strips 2 being joined to form seams 3 (Fig. 1 and 2). In a modification the piece of foil is obtained from two bands placed crosswise one on top of the other, joined together where they overlap. In another modification a bag is obtained by folding a rectangular sheet in half and joining two edges together. A rectangular block 6 is pushed into this bag which leaves " ears " 7 projecting. These are then folded on to the base and fastened to it. The ears can, if desired, be seamed before folding. Specifications, 539,044, 637,655 and U.S.A. Specifications 2,074,277 and 2,149,872 also are referred to. The Specification as open to inspection under Sect. 91 states also that the bags may be made of rubber hydrochloride. This subject-matter does not appear in the Specification as accepted.
Patent GB-1118742-A (GB)
Title: Novel aqueous formaldehyde composition
IPC: D06M15/423
Filed: 1965-05-25
Abstract: Cellulosic materials are crease proofed and shrinkproofed and their swelling properties may be reduced by applying thereto an aqueous composition comprising a mixture of formaldehyde and an alkyl carbamate of the formula H2NCOOR in which R is an alkyl or cycloalkyl group in which the mole ratio of formaldehyde to carbamate is at least 3:1, and heating the treated materials at a temperature sufficient to fix the aldehyde on the materials but insufficient to cause any substantial nitrogen fixation.  The composition which may be in relatively concentrated form and may be diluted with water to obtain the desired treating bath may be neutral, alkaline or acidic and may also contain wetting agents, e.g. a nonyl phenol-ethylene oxide condensate, hand modifiers, softeners, e.g. dimethyl polysiloxane oil, acrylic polymers, polyvinyl alcohol, brighteners, magnesium chloride, sodium chloride and formic acid.  The treated fibres may subsequently be treated with additional catalyst, sodium meter bisulphite and a softener e.g. emulsified tallow softener and dried, and in the case of fabrics then creased and pressed.  Yarns or fabrics comprising cotton alone or in admixture with polyester firbes or fabrics comprising a viscose rayon non-woven web or polypropylene-viscose rayon non woven web needled into a polypropylene or cotton scrim and palmered and calendered, may be treated.
Patent GB-1188235-A (GB)
Title: Improvements in and relating to Cleansing Apparatus for Clockwork Mechanisms
Inventor: PONS AMEDEE
IPC: G04D3/08
Filed: 1968-02-13
Abstract: 1,188,235. Cleaning metals. A. PONS. Feb. 13, 1968 [Feb. 27 1967 ], No. 7065/68. Heading C7E [Also in Division G3]. In a machine for cleaning clockwork mechanisms by agitating them in a cleaning liquid bath and subsequently rotating them in drying operation, means is provided for imparting to the mechanism in the cleansing phase vibrating to and fro motion in a particular direction combined with a continual change of position transversely of said direction. The machine comprises a support 14 for the mechanisms which is immersed in cleaning liquid in a jar 34 and is carried by a spindle 12, 13 to which is secured a hollow head 9 having and extension 15 surrounded by a ball bearing 16. The latter is housed in a ring 17 mounted by pivot pins 18, 181 Fig. 1 (not shown) in the walls of a channel member 21. During the cleaning phase a ball bearing 7, or an eccentric pin 6 or a cylinder 3 driven by an electric motor 1, engages in a recess 8 in the head 9 to rotate the spindle 12, 13 whilst simultaneously causing it to oscillate about the pins (18, 18<SP>1</SP>). For the drying operation the spindle 12, 13 is lowered by tilting the member 21 about a pivot 28 so that the ball bearing 7 is disengaged from the recess 8, and an aperture 11 in the spindle head 9 is engaged with a coupling ring 5 on the cylinder 3 so that the support 14 is rotated without oscillation.
Patent GB-1391624-A (GB)
Title: Fixing building elements
IPC: F16B2/22
Filed: 1972-02-16
Abstract: 1391624 Supporting building elements; suspended ceilings INSULATALL SERVICES Ltd 14 Feb 1973 [16 Feb 1972] 7073/72 Headings E1W and E2B An assembly comprises a building element 1, 2 e.g. a metal tile tray, retained by a hollow section 3 having two leg portions 4, 5 resiliently urged towards each other and releasably retaining the building element 1, 2 therebetween. A clip 10 extends across the gap between the leg portions 4, 5 thereby increasing the force required to move the leg portions 4, 5 apart. The building element may be provided with raised portions 7 which co-operate with a complementary formation 9 on the leg portions 4, 5. The clip is mounted on the hollow section at a cut out portion of the building element. Various shapes of clip are disclosed (Figs. 5 to 8 not shown). The section 3 and clip may be of spring steel or synthetic plastics material.
Patent GB-398501-A (GB)
Title: Improvements in and relating to electric power converting apparatus
IPC: H02M7/44
Filed: 1932-03-09
Abstract: 398,501. Converting; valve generating circuits. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.- (Assignees of Bedford, B. D. ; 329, Germania Avenue, Schenectady, New York, U.S.A.) March 9, 1932, No. 7083. Convention date, March 9, 1931. [Class 38 (ii).] A self-excited parallel - t y p e inverter incorporating a pair of grid-controlled valves 16, 17 is arranged so that on switching on the D.C. supply only one of the valves is rendered conductive by a transient positive potential. The valve 16 is rendered conductive by connecting its grid to the positive D.C. lead through a condenser 25, a corresponding condenser 26 connecting the grid of valve 17 to its cathode. On closure of the switch 28 the grids of valves 16, 17 acquire the potential of the positive and negative D.C. supply leads respectively. A resistance 27 discharges the condenser when the supply is switched off. Condensers 25, 26 do not affect the normal operation of the valves. In a modification a tuned circuit comprising capacity, inductance and resistance is connected across the D.C. supply when the switch 28 is closed, the transient oscillation being applied to the grid transformer 21. The circuit may be kept in oscillation to determine the output frequency by supplying it from a winding on the output transformer of the inverter through a phase advancing condenser Fig. 2 (not shown). The resistive inductance of the oscillation circuit may be constituted by the primary of the grid transformer itself and, in a modification, the back coupling from the main supply may be obtained from a tap on the main. primary winding of the output transformer 12. The Specification as open to inspection. under Sect. 91 stated that the invention was applicable to series-type inverters and referred to Specification 347,474. These statements do not appear in the Specification as accepted.
Patent GB-589584-A (GB)
Title: Improvements relating to electric telemetering systems
IPC: G08B21/00
Filed: 1945-03-21
Abstract: 589,584. Resistance measurements. BRITISH THOMSON-HOUSTON CO., Ltd. March 21, 1945, No. 7137. Convention date, March 22, 1944. [Class 37] [Also in Group XXXVIII] A direct-current telemetering device consists of a resistance of high temperature coefficient, which may be at a remote point, connected into the field circuit of an electromagnet so as to control the strength of the field produced by it and hence the position of a permanent magnet, situated in the field, and its associated pointer. In the Figure, the annular magnetic circuit 10 of highly permeable material, with air-gap 16, is magnetized by opposing coils 11 and 12 connected to battery 21. Cylindrical magnet 13, of high coercive force magnetic material, magnetized along a diameter, is rotatably mounted in its cylindrical axis coaxially with the annulus 10, and a damping ring 25, of conducting material, is interposed between it and the magnet 10. Coils 11 and 12 are both divided into two mutually opposing parts 11a, 11b and 12a, 12b respectively. 11a and 12a are connected across battery 21 in series with resistor 17 and 11b and 12b are similarly connected in series with resistors 22 and 23. The values of the latter resistors are so selected that with the temperature of resistor 17 at the lower end of the scale to be measured, the coils 12a and 12b balance magnetically, while at the higher end 11a and 11b balance, and the temperature range measurable is determined by the choice of values of 22 and 23. The device may be used to measure changes in the value of resistor 17 produced by mechanical means. In Fig. 2 (not shown), an alternative method of connecting coils 11 and 12 is indicated. Specification 552,168 is referred to.
Patent GB-1282854-A (GB)
Title: Polyester polyacrylate monomers and oligomers, their preparation and compositions comprising them
IPC: C08G63/52
Filed: 1970-02-13
Abstract: 1282854 Anaerobic adhesives TOAGOSEI CHEMICAL INDUSTRY CO Ltd 13 Feb 1970 [14 Feb 1969 1 March 1969 17 March 1969 31 March 1969 10 July 1969] 7167/70 Heading C3P [Also in Division C2] An anaerobic cure composition for bonding surfaces together comprises a peroxide, a polymerization accelerator and a polyester polyacrylate monomer or oligomer which is the esterification product of a glycol with an acrylic acid, which may be substituted (e.g. acrylic, methacrylic, ethacrylic or α-haloacrylic acid) and at least one polycarboxylic acid which is a tricarboxylic acid, a tetracarboxylic acid, a tetrahydrophthalic acid or itaconic acid, stabilized against addition polymerization by the incorporation therein of a polymerization inhibitor. Specified polymerization accelerators are tertiary amines, oximes, thiurams and Malachite Green. The peroxide may be hydrogen peroxide or an organic peroxide, hydroperoxide or perester. The stability of the composition is improved by inclusion of a small amount of oxalic acid. Inhibitors or UV absorbers may also be present.
Patent GB-339897-A (GB)
Title: Improvements in or relating to feed water systems of condensing locomotives
IPC: F22D1/42
Filed: 1930-03-05
Abstract: 339,897. Burmeister, E. April 24, 1929, [Convention date]. Feedwater, supplying and controlling.- Locomotive boilers having a feedwater heater C and a make-up feedwater evaporator A heated by exhaust, steam from an auxiliary engine are provided with a valve B which cuts off admission of steam to the feedwater heater to determine, a lower limit for the pressure in the, exhaust steam pipe D, and which establishes a connection through a pipe H with a condenser to determine an upper limit. The valve B comprises a piston raised by exhaust steam pressure against the force of a spring which is adjusted to the particular pressure it is desired to maintain in the pipe D. If the heat supplied to the heater C in the form of make-up steam (through pipe F) exhaust steam and possibly condensed exhaust steam (through throttle valve S) is insufficient, the valve prevents the resulting pressure, drop from being communicated to the pipe D. While normally the quantity of steam exceeds that required in the evaporator A, that which cannot be condensed in the evaporator coil R passing to the heater C, excessive steam pressure is prevented by a further rise of the valve piston which connects pipe E with pipe, H leading to a condenser. In a modification valves B, S are combined and placed between a pipe leading from the evaporator coil and a pipe, opening into the connection between the evaporator steam chamber and the heater.
Patent GB-545040-A (GB)
Title: Improvements in roller boxes for machine tools
IPC: B23B29/16
Filed: 1941-06-07
Abstract: 545,040. Turning. SAUNDERS, A. June 7, 1941, No. 7225. [Class 83 (iii)] A combined tool and work rest has concentric adjustment of the steady rollers M which are carried by screws L on levers 1 pivoted in slots in the body and carrying at their inner ends rollers J bearing a cone F screwing for adjustment on an extension of the shank A by which the rest is mounted on the turret &c. The cone is knurled at G to facilitate adjustment through a cut away part W of the body, and it has attached to it a toothed ring S co-operating with a spring plunger T to lock the cone after adjustment. Springs P maintain the rollers J in contact with the cone. A screwed ring R reinforces the slotted part of the body. A slotted projection X serves for the adjustable mounting of a swivel tool block B4 bored to receive a cylindrical block A<SP>2</SP> in which the tool Z is secured by a grub screw. The block A<SP>2</SP> is clamped in the holder at A<SP>1</SP> and the tool is backed up by a screw B3 screwed in an arm B<SP>1</SP> pivoted at one end and supported at the other by a lug to permit swinging aside for easy removal of the block A2. In a modification the shank A may be dispensed with, the rest being bolted to the turret by the post B. The rollers M are radiused to secure fair bearing on the work in all positions of adjustment.
Patent GB-536245-A (GB)
Title: Improvements in or relating to apparatus comprising a rotary shaft and intended for dealing with corrosive fluids
IPC: F04D29/02
Filed: 1940-04-22
Abstract: 536,245. Shafts; centrifugal pumps. WAYRE, F. D., FOREMAN, W. E., and DEXINE, Ltd. April 22, 1940, No. 7259. [Class 80 (ii)] [Also in Group XXVI] A rotary shaft which is exposed to the action of corrosive fluids in use, is composed of, at the surface at least, of porcelain. As shown the steel shaft 6 of a centrifugal pump has a porcelain sleeve 9 secured thereto by a layer 10 of acidresisting cement. The latter is keyed to the sleeve and shaft by the use of keyways 11, 12. The impeller 1 is a hardened non-metallic plastic material moulded around a mild steel insert 13, and the shaff 6 has a screwed end 14 screwing into tne insert 13. At the inner end the shaft 6 has a short sleeve 18 of acid-resisting metal.
Patent GB-694679-A (GB)
Title: Acoustic delay lines
Inventor: TURING ALAN MATHISON
IPC: H03H9/36
Filed: 1951-03-30
Abstract: 694,679. Electromechanical delay lines. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Feb. 28, 1952 [March 30, 1951], No. 7403/51. Class 40 (viii). In an acoustic delay line comprising a liquid in a tube 1 between input and output piezoelectric crystals 3 and 4, a metallic grid 5 is arranged in the line so that it is not perpendicular to the direction of propagation of the waves in order that it may attenuate them. This prevents the building up of standing waves due to reflections in the line. The liquid in the line may be mercury and the grid may be of stainless steel.
Patent GB-206779-A (GB)
Title: Improvements in or relating to gramophones and like machines
IPC: G11B3/08
Filed: 1923-03-14
Abstract: 206,779. Polden, C. E., and Macpherson, S. W. J. March 14, 1923. Speed-regulating.-A link d, pivotally attached at one end c to a lug on the tone arm b or to a spring clip a fitted on the tone arm, and fitting by means of an eye at the other end over the handle e of the speed regulating lever, is used to obtain approximately constant linear speed of the record track under the stylus.
Patent GB-1185703-A (GB)
Title: Improvements in and relating to the Mounting and Dismounting of Machine Elements
IPC: F16D1/091
Filed: 1967-02-16
Abstract: 1,185,703. Assembling force fits. SVENSKA KULLAGERFABRIKEN A.B. 16 Feb., 1967 [17 Feb., 1966], No. 7430/67. Heading B3U. [Also in Divisions B4 and F2] The inner race of a roller bearing is mounted on, or dismounted from, its frusto-conical seat 2 on a shaft 1, by means of an annular internally stepped member 6 which co-operates with an annular externally stepped member 7 held axially by a spacer 12 and locking nut 13, to define a pressure-tight annular chamber 8 into which oil or grease may be introduced under pressure to force the member 6 axially against the inner race moving it along its seat, friction between the ring 7 and shaft 1 being at least a substantial proportion of the axial force exerted by the hydraulic pressure on the inner ring 7 thereby reducing the strain on the locking nut 13. After mounting, the pressure device may be removed and replaced by a spacer sleeve, a thrust bearing and locking nut or only a locking nut. Pressure devices may be provided both to mount and dismount a single bearing. The inner race 2 may be dismounted by hydraulic pressure from conduit 26 communicating with a circumferential groove 27 to press the inner race from its seat. For continuous control of the bearing clearance while being mounted, the outer race is replaced by a gauge (14), Fig. 2 (not shown), known per se.
Patent GB-1416594-A (GB)
Title: Colostomy or ileostomy bag
IPC: A61F5/441
Filed: 1973-02-15
Abstract: 1416594 Colostomy Bag BESKYTTEDE WIRKOSOMHEDER I KOBENHAVN VED DIREKTOR ARNE BRONDBERG 15 Feb 1973 [17 Feb 1972] 7442/73 Heading A5R A colostomy bag I has a venting valve 6 with a filter and an annular disc 4 coated with adhesive, whose central opening coincides with the inlet openings 3 of the bag; and which is welded to the exterior wall of the bag at a distance from the outer edge of the disc so that it covers the venting valve. The adhesivecoated disc 4 attaches the bag to the wearer and is interposed between the valve 6 and the wearer's skin to safeguard the latter from the effects of any deodorant used in the filter.