baber/WOPTO huggingface dataset:
Patent GB-1184486-A (GB)
Title: Spinneret Production.
IPC: D01D4/02
Filed: 1967-11-16
Abstract: 1,184,486. Making spinneret master patterns. CELANESE CORP. 16 Nov., 1967 [16 Nov., 1966], No. 52118/67. Heading B3A. [Also in Division C7] A master pattern for use in moulding negative reproductions of spinnerets for spinning artificial filaments comprises depositing material about orifice forming members having externally a shape and dimensions corresponding to the internal shape and dimensions of the desired spinning orifice and removing said members from the material leaving a cavity therein which forms the desired spinning orifice. The pattern, which contains a plurality of orifices may be formed either by deposition of material about a plurality of orifice forming members arranged on a level surface, or by forming units each containing a single spinning orifice, by electrodeposition upon a master orifice-forming member, and arranging said units on a level surface and depositing metal upon the surface and about the units to form a unitary solid layer containing the units. The master unit may be formed of plastics e.g. epoxy resins or oxymethylene polymers, clay, or metals deposited by electrolytic or chemical means, e.g. nickel, iron, cobalt, copper or suitable alloys. In the form shown orifice-forming members 14 are positioned upon the upper surface 19 of holder 13 and held in position by means of ferrite magnet 16 and iron pole piece 15, the holder 13 being surrounded by an annular shield 11, 12 and connected to an electrical current supply and the whole unit is immersed in a sulphamate nickel plating bath. Excess nickel is machined away to expose the spinneret orifices. The pattern may be finished by grinding, chemical milling, electrolytic grinding or electric discharge machining. Electrodeposition may be carried out using air apitation and an anode of depolarized nickel conttained in an anode bag.
Patent GB-1373500-A (GB)
Title: Control system for a valve
IPC: F16K31/04
Filed: 1971-11-10
Abstract: 1373500 Valves; clutch control MAXON CORP 10 Nov 1971 [30 April 1971] 52162/71 Headings F2V and F2L  A control system for closing a valve in an emergency comprises a valve stem 49 which is moved in an opening direction by an electric motor 40 through an electromagnetic clutch 60, through gears, rack-and-pinion 47, 48 and a oneway bearing 44a which holds the valve in the open position; and is moved in the opposite direction to close the valve by a spring 26 on receipt of an emergency signal which breaks the circuit controlling the clutch and allows the clutch to slip. This renders the one-way bearing inoperative and the spring drives the valve member to the closed position. During the opening movement of the valve a constant voltage is applied across terminals 73, 74 and the capacitor c is charged accordingly (Fig. 7, not shown). On receipt of the emergency signal the constant charging voltage across terminals 71, 72 ceases, and the capacitor C discharges through the clutch, the decay of voltage giving rise to a decay in the degree of coupling. Thus the valve member is effectively dampened to the closed position. The clutch includes ah annular field coil 61 held stationary by a pin 62. A rotor 63 has a frictional surface 64 co-operating with a respective surface 66 on a freely rotatable armature 65. The other end of the armature is joined to a pinion 50a. A manual crank (29) (Fig. 4, not shown) may additionally be included.
Patent GB-1240313-A (GB)
Title: Betaine salt
Inventor: LEROI EUGENE
IPC: C07D273/00
Filed: 1968-11-07
Abstract: 1,240,313. Betaine thiomalate. SOC. D'ETUDES DE PRODUITS CHIMIQUES. 6 Nov., 1969 [7 Nov., 1968], No. 52731/68. Heading C2C. Betaine thiomalate, a novel salt, is prepared by reacting 1 mol. of betaine with 1 mol. of thiomalic acid in methanol and crystallizing out the salt. Pharmaceutical compositions in conventional forms for oral administration comprise the above novel salt and a carrier or diluent therefor and are said to have detoxicating, liver-protecting, anti-artery blocking, anti-ageing and vascular protection properties.
Patent GB-1270427-A (GB)
Title: Method and apparatus for binding packets of sheet material
IPC: B42B5/10
Filed: 1969-10-29
Abstract: 1,270,427. Bookbinding. WESTAB Inc. 29 Oct., 1969 [12 Nov., 1968], No. 53042/69. Heading B6G. Machine for binding loose-leaves 24, Fig. 4, disposed between covers 22 and provided with sets of spaced perforations 25, using castellated wire ring elements 80, comprises a laterally inclined support 12, Fig. 2, along which the leaves and covers (books) 22, 24 are advanced in lateral registration with a guide rail 14 by a continuously moving chain conveyer 15 towards a toothed, ring element feeding belt 70 which is driven intermittently by a clutch and brake assembly 60 controlled by a photo-electric device 88 associated with a slotted disc 85 to scan the leading edge of the first perforation and also to actuate a cutter 55 to cut off an element 80 from a strip 30 when a counter (125, Fig. 5) has determined the number of perforations. The strip 30 is supplied from a motor driven roll (31, Fig. 1) to a guide rail 75, the severed elements being then pressed into the perforations 25 by synchronously driven rollers 100 and finally rotated in a helical groove in a guide 102 through 90 degrees and then closed in a manner described in Specification 1,133,153.
Patent GB-1193197-A (GB)
Title: Cyclodextrin Polyethers and Process for Preparing the same
IPC: C08B37/16
Filed: 1967-11-22
Abstract: 1,193,197. Coated paper. CORN PRODUCTS CO. 22 Nov., 1967 [16 Dec., 1966], No. 53271/67. Heading B2E. [Also in Divisions C2 and C3] Cyclodextrins substituted with polyether groups (see Division C3) may be used as protective colloids in the coating of paper with clay compositions.
Patent GB-1207028-A (GB)
Title: Tubular vortex separator
IPC: B01D45/16
Filed: 1968-11-11
Abstract: 1,207,028. Centrifugal separators. PALL CORP. 11 Nov., 1968 [14 Nov., 1967], No. 53227/68. Heading B2P. A vortex separator for removing solid contaminants from gases comprises a tubular body 1 with a constriction 20 adjacent its inlet 2, and a convexly curved surface 22 leading from its inlet to the constriction, a vaned deflector 6 adjacent the constriction to create a vortical flow of the contaminated gas and effect separation of the contaminants from the gas, and a cleaned gas tubular outlet member 10, with one end extending into the outlet 3 of the body 1 to define an annular passage 12 for the removal of the separated contaminants. A straight sided tapered diffuser portion 24 leads from the constriction into the deflector. Alternatively, Fig. 2 (not shown), a rightangled shoulder against which the deflector abuts is formed between the constriction and the wall of the tubular member. The parts 20, 22, 24 may be integral with the tubular body or the part 20 and/or the part 22 may be formed as an insert member fitted into the body. The curve defining the convexly curved surface 22 may be a segment of a lemniscate or parabola or an arc of a circle. The tubular body 1 may be wholly cylindrical or may have a flared, straight-sided or curved outlet portion 15, it may be moulded from plastics, e.g. nylon, polyurethane polypropylene, polycarbonate or polyphenylene oxide, or made from steel, stainless steel or a nickel alloy. The outlet member 10 which is generally tapered is made of polyurethane rubber and is supported by tabs formed thereon and extending to the wall of the body 1 or by a back plate. The deflector 6 may be made from the same or a different material from the tubular body and comprises a number of helical vanes 5 which may be tapered in thickness from front to back and which may be supported on a central hub having a dome-like or blunt tip which may extend beyond the inlet and which may be used to support a guard screen in front of the tubular body. The vanes of the deflector may be bonded to the body 1 by a resin adhesive 8 or the deflector may be press-fitted into the body. The separated contaminants may be removed from the separator by means of a blower or compressor connected upstream of the separator or by means of an eductor at the discharge end. A number of separators may be groupted together as an array of tubes with their outlet members supported by a common back plate. The separator may be used as an air cleaner for the engine of an aircraft, e.g. a turbine-driven helicopter, or of earth-moving equipment.
Patent GB-1450306-A (GB)
IPC: C09K17/30
Filed: 1974-12-10
Abstract: 1450306 Consolidating earth BERGWERKSVERBAND GmbH and BAYER AG 10 Dec 1974 [26 July 1974] 53427/74 Heading E1F An earth or rock formation is consolidated by reacting, within the formation, a polyisocyanate with a polyol containing 5-50% by weight of a polyether with an OH number below 100 produced by reacting a compound having more than one reactive hydrogen atom per molecule with an excess of 1, 2-alkylene oxide. The compound having more than one reactive hydrogen atom per molecule may be a carboxylic acid, phenol, alcohol or amine.
Patent GB-1249044-A (GB)
Title: Composite electrode for a voltaic cell
Inventor: FRAIOLI ANTHONY VINCENT
IPC: H01M4/02
Filed: 1969-10-31
Abstract: 1,249,044. Cathode for electric cell. AMERICAN CYANAMID CO. 31 Oct., 1969 [5 Dec., 1968], No. 53586/69. Heading H1B. A cathode for an electric cell comprises a porous sheet comprising (A) a web of water-laid intermeshed fibres and electroconductive cathode-active particles, said particles forming an electroconductive network in said web and constituting at least 25% thereof and (B) incorporated with the web an electrically conductive scrim core of metal grid sheet material. In a particular embodiment, a slurry comprising acetylene black, as cathode-active material, asbestos fibres, polytetrafluoroethylene emulsion as a binder and water is first mixed with acetone and vigorously agitated to coagulate the emulsion and then filtered through a copper screen covered with a polytetrafluoroethylene screen to form a mat of fibres and active material. This is dried by passing air through it and then a scrim core sheet of expanded aluminium is placed on it before another mat of fibres and active material of the same composition is similarly formed on top. A further sheet of polytetrafluoroethylene is placed on top of the mat and the whole assembly is removed from the copper screen, wrapped in blotting paper, calendered to remove water, and cut into strips. Finally, a terminal tab is attached to the aluminium sheet. To form a cell, a lithium foil anode between two paper separators is placed against the cathode so that its terminal tab is at the opposite end of the pack. The pack is coiled with the cathode tab in the middle and placed in a steel can, the anode tab connected to the can, a metal cover having a valve in it is attached to the cathode tab and then insulatingly sealed to the can. The can is evacuated, purged with SO 2 , filled with an electrolyte comprising acetonitrile, propylene carbonate, LiBr and SO 2  and sealed. In another embodiment, the mat of fibres also contains aluminium flake.
Patent GB-1283697-A (GB)
Title: Improved light-sensitive recording material containing lead iodide and/or lead bromide
Inventor: VANHALST JOHAN EUGEEN
IPC: G03C1/725
Filed: 1968-11-12
Abstract: 1283697 Light-sensitive lead iodide or bromide recording material AGFA GEVAERT 4 Nov 1969 [12 Nov 1968] 53669/68 Heading G2C A photo-sensitive recording material comprises lead iodide or lead bromide or a crystalline mixture thereof dispersed in a hydrophilic binder with a sensitizing sulphur compound which is: (1) a thiol compound or thiolate wherein the -SH group is non- tautomeric, (2) a compound of the formula:- wherein M<SP>+</SP> is a cation and R is an organic group, (3) a compound yielding HSO 3 <SP>-</SP> ions, (4) a compound yielding SO 3 <SP>2-</SP> ions, (5) a compound yielding HOCH 2  -SO-O<SP>-</SP> ions, SO 2 <SP>2-</SP> ions or M-O-S-O<SP>-</SP> ions, wherein M is a cation, (6) a compound yielding S<SP>2-</SP> ions, or M-S<SP>-</SP> ions wherein M is a cation, (7) a compound yielding S 2 O 4 <SP>2-</SP> ions, (8) a compound yielding SCN<SP>-</SP> ions, (9) an organic isothiocyanate, (10) a compound containing a -S-C(NH 2 ) = NH group, (11) a compound containing a #P=S group, (12) a compound containing a -S-S- group, (13) a compound containing a -S x - group wherein x is at least 2, (14) a compound containing a -SR 1  group wherein R 1  is an organic group linked through carbon to the S atom, (15) a compound containing a -S-C(X)=N- group wherein X is an amino or hydrazino group, and said sulphur-containing group makes part of a heterocyclic ring or ring system, (16) a compound of As, Sb, or Sn known as thiosalts, or (17) a selenium or tellurium compound that has reducing properties and/or that contains a releasable selenium or tellurium atom, and/or a chemical compound as particularly mentioned in Table 3 of the Specification or (18) a compound of the formulae H 2 C = CHCH 2 -NHCS-NH 2 , H 2 N-CS-NH 2 , H 2 N-CS-NH-NH 2 , (H 2 N) 2 C = SO 2 , H 2 N-CS-NH-NH-CS-NH 2 , H 3 CCO-NH-CS-NH 2 , H 2 N-CS-CS-NH 2  or K 2 CS 3 . The hydrophilic binder may be a water-permeable hydrophilic colloid, e.g. gelatine. The material may contain a wetting agent or water-attracting compound e.g. glycerol, a low molecular weight polyoxyethylene glycol or a water-attracting salt or metal oxide, such as lithium chloride. Print out or developing out images may be produced. The material may be exposed while moistened with an aqueous solution containing a sensitizing compound as set forth above. Numerous sensitizing sulphur compounds are listed.
Patent GB-1283730-A (GB)
Title: Portable power tool
Inventor: WARREN KEITH STANLEY
IPC: B23B47/18
Filed: 1969-11-03
Abstract: 1283730 Portable power tools; stands and supports ROCKWELL MFG CO 3 Nov 1969 53861/69 Headings B3B and B3C A portable power tool comprises an air motor 10, a housing 20 containing gearing which provides rotation and axial feed of a spindle 110, and a tubular member 112 surrounding the spindle and which can be attached to a workpiece W by means of a fixture 113. The gearing in housing 20 provides (a) a gear train for rotating the spindle; (b) means for axially moving the spindle at a cutting feed; (c) means for rapid advance of the spindle; and (d) means for rapid retraction of the spindle. Push-button control means 165 are provided to select the required feed. The spindle rotating gear train (a) is provided by a drive gear 25 at the end of the air motor 12 driving through bevel gear 30 and spur gears 28, 36, 68 to a gear 118 on the spindle 110. The normal cutting feed of the spindle (b) is actuated by pressing a button 165 which pushes a slider blade 150 to raise a clutch gear 78 to engage driving dogs on the driven gear 68. The clutch gear 78 is in continuous engagement with a feed gear 125 on the spindle, the rotation of which relative to the spindle acts, through its threaded engagement therewith, to feed the spindle axially. To advance the spindle rapidly (c) a further button 165 is pressed to push slider blade 158 to push down a gear 50, which is in continuous engagement with the clutch gear 78, into driving engagement with a driven gear 58. The speed of rotation of the gear 58 is such as to rotate the clutch gear 78 and hence the feed gear 125 at a fast rate. To retract the spindle rapidly (d) a further button 165 is pressed to actuate slider blade 155 to push the clutch gear 78 downwards to engage stationary lugs fixed to the housing 20. This locks the clutch gear 78 and prevents rotation of the feed gear 125 whilst the spindle is rotating and a fast-retraction results. The clutch gear 78 can be placed in a neutral position. Adjustable stops 138 and 132 control the stroke of the spindle feed. When the stops 138, 132 engage their respective limit of travel the higher torque generated in the gears forces the clutch gear 78 away from either the gear 68 or the stationary lugs by means of sloping flank faces.
Patent GB-1099844-A (GB)
Title: Improvements in or relating to carpet manufacture
IPC: D06N7/00
Filed: 1965-12-21
Abstract: Carpets or like floor coverings having a base fabric in which pile fibres which may be composed of synthetic material, are bonded by an embossed foamed coating applied to the back of the base fabric, are produced by applying to the back of the base fabric a layer of foamable plasticised thermoplastic material, allowing the material to foam and gel while supplying heat thereto, and applying pressure to the layer by means of a cooled embossing roller so as to cause penetration of the thermoplastic material into the base fabric whereby to anchor the pile fibres the pressure being insufficient to destroy the foam structure of the thermoplastic material.  The thermoplastic material may completely penetrate the base fabric and surround part of the pile fibres to anchor them, the exposed surface of the layer of thermoplastic material being provided with sucker-hollows over its whole surface.  The thermoplastic layer may be embossed with length and/or other markings, e.g. a trade mark. The carpet may be produced on an apparatus which comprises a hopper for the foamable thermoplastic material, a meshed endless belt entrained about two rollers and moving on rollers or guide ledges so as to form a guide path between the entrainment rollers and supporting the pile side of the base fabric, a heat source, e.g. in infra-red radiator or hot air nozzles, above the belt which causes foaming of the thermoplastic material, and a cooled embossing roller pressing on the foamed material on the face of the carpet remote from the pile and located after the heat source in the direction of feed of the carpet, the embossing roller being positioned above the entrainment roller at the outlet end of the guide path.
Patent GB-1404154-A (GB)
Title: Starting arrangement for electronically controlled single-phase  asynchronous motors primarily for teleprinters
IPC: H02P1/42
Filed: 1972-11-24
Abstract: 1404154 Control of A.C. motors GERATEWERK KARL-MARX-STADT IM KOMBINAT VEB MESSGERATEWERK ZWONITZ VEB 24 Nov 1972 54452/72 Heading H2J The rotor winding 1 of a single phase asynchronous motor (whose stator winding is not shown) is connected to a speed regulating device 4, 5 via a rectifier bridge 2 and a circuit 3 comprising a starting and current limiting resistor 3-1 in parallel with a contact 3-2 responsive to the motor rotation, the arrangement being such that during starting the resistor 3À1 is in circuit until contact 3À2 closes at a preselected motor speed, after which the speed increases to a second preselected value at which it is maintained constant by the operation of a contact 5À1 also responsive to the motor rotation and controlling the state of a switching transistor 4, which has a predetermined resistance (to produce a desired rotor current) when contact 5.1 is open and becomes fully conductive when contact 5.1 closes.
Patent GB-1190800-A (GB)
Title: Improved Helicopter Steering and Propelling Device
IPC: B64C27/04
Filed: 1967-12-01
Abstract: 1,190,800. Helicopters. SUD-AVIATION SOC. NATIONALE DE CONSTRUCTIONS AERONAUTIQUES. 1 Dec., 1967 [13 Dec., 1966], No. 54842/67. Headings B7G and B7W. A helicopter comprises fuselage 1, engine and rotor drive in fairing 2, stub fixed wings 10 and a tail boom 4 which carries a fin 6 formed with a hollow shrouding 5 within which is housed an anti-torque rotor 7, the fin being formed also with a fairing 8 for the drive to a propelling airscrew 9. The fin carries a horizontal stabilizer 11 and has an aerofoil section over at least part of its area to enable it to effect a lateral aerodynamic force under the action of forward speed to relieve rotor 7 of its torque countering function. The propelling and control mechanism is shown diagrammatically in Fig. 9, wherein rotor 3 is driven by a gas turbine engine 2a (which is governed at 2c) via a transmission box 2b, a shaft 12 extending aft to drive airscrew 9 and, through bevel gearing 17, 18, anti-torque rotor 7. Cyclic pitch control column 68 operates on the blades of rotor 3 through linkage 69-72, 77 and 78 and simultaneously effects collective pitch adjustment of propelling airscrew 9 through linkage 66, 64, 60, 58 and 38. In hovering flight cam 64 is positioned so that it maintains the blades of airscrew 9 at zero pitch. Collective pitch lever 83 operates on rotor 3 through linkage 82, 79, 74 and 78 and simultaneously on rotor 7 through linkage 82, 79, 54, 36, 32 and 29, having no effect on airscrew 9 by virtue of pin and slot connection 58. Pedals 56 steer the helicopter by adjustment of positive or negative pitch of the blades of rotor 7 through linkage 55, 54, 36, 32 and 29.
Patent GB-1211604-A (GB)
Title: Building tile and method of manufacture
IPC: C03B23/035
Filed: 1968-11-22
Abstract: 1,211,604. Vitreous tile. CORNING GLASS WORKS. 22 Nov., 1968 [22 Nov., 1967], No. 55536/68. Heading C1M. [Also in Division E1] A tile T comprises a body formed of non- porous vitreous material, the body having a relatively planar face bounded by integral, generally perpendicular, peripheral sidewall portions 36 and a continuous, integral peripheral flange 32 extending inwardly of the sidewall portions and generally parallel to the planar face providing a recessed undercut 34, for lockably attaching the tile to mud or mortar. Such a tile may be formed by placing a sheet G of heat-softened vitreous material (e.g. glass) over the cavity 14 and rim 10 of mould 12, applying a vacuum via ports 16 and 18 to conform the material to the mould shape, squeezing the edges of the sheet with a trimmer 24 having edges 26 so as to gather inwardly the glass between upper mould surface 28 and trim edge 30 to form an inward facing flange, edge 26 contacting edge 30 so as to sever the glass. The amount of glass in the flange may be varied by altering the distance between 28 and edge 30.
Patent GB-1185588-A (GB)
Title: Process for the Preparation of Lead-Containing Piezoelectric Powders
Inventor: LEVY NEWTON
IPC: C01G23/00
Filed: 1968-11-25
Abstract: 1,185,588. Piezoelectric ceramics; lead titanates and zirconates. W. R. GRACE & CO. 25 Nov., 1968 [23 Jan., 1968], No. 55825/68. Headings C1A and C1J. A piezoelectric ceramic is made by subjecting compounds of lead and of zirconium and/or titanium in the form of a solution, slurry or solid mixture to thermal decomposition and/or dehydration in a fluid energy mill and cold pressing the resulting powder to more than 90% of its theoretical density. Decomposable compounds, e.g. nitrates, acetates, carboxylates, carbonates or hydroxides, of Pb and Zr and optionally also of Ti, to which decomposable compounds of Sr, Nb, Bi or Sn may be added, are reacted together in a fluid energy mill with hot air or steam at 310-820‹ C. and the powders produced are cold pressed and sintered at 800-1500‹ C. An aqueous solution, containing equal molecular amounts of lead nitrate and of zirconium nitrate, is milled or first precipitated with ammonium hydroxide, dried to a powder and then milled. A hydrous titania cake, precipitated from aqueous titanium tetrachloride with ammonia, is dissolved in a nitric acid solution containing Bi, Pb and Zr nitrates, the solution (having the cation composition (Pb0.98Bi0.02)(Zr0.65Ti0.35)) is milled or first precipitated with ammonia, dried to a powder and then milled. A precipitated hydrous titania cake is dissolved in an aqueous solution of Pb, Sr and Zr nitrates by adding nitric acid; the mixture (having the cation composition (Pb0.94Sr0.06)(Zr0.52Ti0.48)) is precipitated with ammonium hydroxide and the slurry formed is milled. A solution containing titanyl chloride and zirconyl chloride is precipitated by aqueous ammonia and the washed precipitate mixed with lead nitrate and strontium nitrate; the slurry formed (having the cation composition (Pb0.96Sr0.06)(Zr0.52Ti0.48)) is milled or first precipitated and then milled.