baber/WOPTO huggingface dataset:
Patent GB-1250735-A (GB)
IPC: A44B19/54
Filed: 1970-02-13
Abstract: 1,250,735. Sliding clasp fastener. ITALO AMERICANA PRENTICE S.p.A. 13 Feb., 1970 [21 March, 1969; 12 Dec., 1969], No. 6961/70. Heading E2S. [Also in Division D1] A sliding clasp fastener of the continuous coil type is woven to the stringer tape. A cord C passes through the loops of the element coil 1 and is held by the weft. Covering flaps are formed by warp threads 1-7 and (1')- (7'), Fig. 3 (not shown), above and below the elements. Two threads form a single pick, and there are 4 picks between each element, two in the upper cover flap, and two in the lower flap. In one embodiment the picks alternate, (Fig. 2). In another embodiment pairs of picks alternate.
Patent GB-1251184-A (GB)
IPC: G11C5/04
Filed: 1967-11-30
Abstract: 1,251,184. Magnetic storage apparatus. EMI Ltd. 18 Nov., 1968 [30 Nov., 1967], No. 54449/67. Heading H3B. [Also in Division H1] In a magnetic thin film storage device in which magnetic thin films 7, 8 are disposed on facing surfaces of two substracts 3, 4 and orthogonal sets of conductors 9, 10 are deposited on the magnetic thin films the two substrates are spaced apart by spacers 11, 12. The magnetic thin films 7, 8 are aligned and the sets of conductors 9, 10 arranged to have their points of intersection between pairs of aligned magnetic films, each pair forming a storage element. Spacers in the form of hollow members 11 and interlocking studs 12 are formed by a photo-etch method in the spaces between the elements 7 and 8. The substrates may comprise copper plates 1, 2 covered by evaporated films of silicon monoxide 5, 6 and the magnetic elements may be formed by evaporation. The conductors 9, 10 may be formed by evaporation and etching and coated with a very thin film of silicon monoxide.
Patent GB-1251536-A (GB)
IPC: B66D5/02
Filed: 1968-12-24
Abstract: 1,251,536. Pulley arrangements; braking. NIHON REGULATOR K.K. 24 Dec., 1968 [28 Dec., 1967], No. 61466/68. Heading B8B. [Also in Division F2] In a rope and pulley system for the free descent of a load from an elevated position, the speed of descent is maintained substantially constant by a unit comprising a gear pump 28, 30 in a closed hydraulic circuit and driven by the rope 32, passing around pulleys 26, and a flow control valve 52 in the circuit for maintaining the flow rate substantially constant irrespective of the torque applied to the gear pump. The fluid pressure on either side of a construction 46 in the fluid circuit between the supply and discharge conduits 40, 42 for the pump is sensed by supplying fluid from each side of the orifice 46 to one end 54, 56 of the spring-centred spool valve 52, and any pressure differential causes the valve 52 to control the fluid flow until the pressures are balanced. A shut-off valve 44 in the closed circuit acts as a brake for the pulley system and may be operated by a load on the rope 32 as it reaches the ground. The rope 32 passes over the two pulleys 26 and over an angled pulley 34 therebetween further rollers, not shown, pressing the rope into engagement with the pulleys 26.
Patent GB-1256541-A (GB)
IPC: H01J29/62
Filed: 1969-10-29
Abstract: 1,256,541. Electron guns; semi-conductor devices. MATSUSHITA ELECTRIC INDUSTRIAL CO. Ltd. 29 Oct., 1969 [29 Oct., 1968; 11 Dec., 1968], No. 53022/69. Headings H1D and H1K. An electron gun comprises a conductive or semi-conductive plate or layer 17, Fig. 5, forming a control grid and disposed adjacent a cathode 11 and separated from an anode 19 by a barrier layer 18; the grid 17 may be separated from the cathode by an insulating layer 25, as shown, and the four layers are provided with a central aperture for the. passage of the beam. The electrodes 17 and 19 may be of metal, and the layer 18 of insulation. Alternatively the electrode 19 may be of N-type semi-conductor material and the electrode 17 of P-type material. The intervening layer 18 may be a depletion layer (Fig. 2, not shown) or an intrinsic layer (Fig. 4a, not shown) or a PN junction (Fig. 4b, not shown) so that the whole assembly forms a PNPN junction; in the latter two cases the intervening layer 18 may be connected to the cathode. As a further alternative the layer 18 may be omitted, leaving a simple PN junction (Fig. 3, not shown). In another arrangement, Fig. 6, a triple gun for a shadow mask tube has.a a common anode in the form of an N-type substrate on which are produced three intrinsic layers I and P-type layers P in a triangular disposition; after formation of the layers. apertures are formed through them to allow passage of the respective beams.
Patent GB-1256991-A (GB)
IPC: C25B1/21
Filed: 1970-02-04
Abstract: 1,256,991. Electrolytic production of  manganese dioxide. KNAPSACK AG. Feb.4, 1970 [Feb.20, 1969], No.5393/70. Heading C7B. Manganese dioxide is electrolytically produced using lead cathodes from a copper-contaminated manganese sulphate solution in sulphuric acid in which the copper content has been established at a level of less than 0À0005 wt. per cent, for instance by establishing a pH at which copper deposits are precipitated (e.g. by addition of calcium hydroxide, calcium oxide or an alkali metal hydroxide) and filtering. The copper content may be further reduced by flowing the solution through a neutral cation exchanger in which all cation positions are occupied by manganese ions. A portion of the bath may be withdrawn for replenishing.
Patent GB-1257018-A (GB)
IPC: C07F7/22
Filed: 1968-02-23
Abstract: 1,257,018. P.V.C. stabilizers. ALBRIGHT & WILSON (MFG.) Ltd. 21 Feb., 1969 [23 Feb., 1968], No. 8896/68. Heading C3P. [Also in Division C2] Stannthianes, which are used as stabilizers for halogen-containing synthetic resins, have the general formula wherein each R is an optionally substituted hydrocarbon radical in which the substituent is inert or the two R groups together with the tin atom form a 5 or 6-membered heterocyclic ring, or R is a polyvalent hydrocarbon radical in a polymeric chain composed of (-R-Sn-R-) groups; R<SP>1</SP> is an optionally substituted hydrocarbon group, the substituent being one which will neither donate electrons to or withdraw them from the tin atom; X is a sulphur-containing electronegative group bonded to the tin atom via a Sn-S- bond; and n is an integer from 1-3. X is preferably a thioglycollate group -SCH 2 COOR<SP>11</SP> where R<SP>11</SP> is an aliphatic radical having 6-12 carbon atoms. The compounds are used as stabilizers for compositions comprising polymers or copolymers of vinyl chloride, vinylidene chloride, chlorinated polyethylenes or chlorinated vinyl chloride polymers, in which they are incorporated in amounts from 2-3% by weight. The stannthianes may be produced in situ in the resin by adding the reactants (R 2 SnS and R<SP>1</SP>SnX 3 ) in the required amounts to the resin prior to milling. Resin compositions may be plasticized or rigid. Examples relate to P.V.C., vinyl chloridevinylidene chloride and vinyl chloride-fumaric acid copolymers.
Patent GB-1257590-A (GB)
IPC: B01J10/00
Filed: 1970-12-02
Abstract: 1,257,590. Solidifying liquids. HCH. BETRAMS A.G. 2 Dec., 1970 [3 Dec., 1969], No. 57156/70. Heading F4H. In apparatus for solidifying liquids, e.g. sodium hydroxide, the liquid is supplied by gravity from a tank 4 to a hollow tube open at both ends and cooling elements 12a are moved as by a piston and cylinder device 9, 10 into contact therewith to solidify part of the liquid and to advance the solidified liquid along the shaft. The elements are then withdrawn to permit fresh liquid to be introduced into the vacated space and the operation is repeated until the solidified liquid projects from the other end of the tube where it is severed by a double knife 6 into blocks 14 for removal on a guide plate 7 and roller conveyer 8. The tube is preferably vertically mounted and the upper end has a surrounding cooling jacket 2 and heater coils 5. The movable cooling elements 12a are positioned alternately between stationary cooling elements (not shown) of a similar wedge shape and hollow construction for the passage therethrough of a cooling medium.
Patent GB-1264099-A (GB)
IPC: H01J23/207
Filed: 1970-04-15
Abstract: 1,264,099. Magnetrons. LITTON INDUSTRIES Inc. 15 April, 1970 [16 April, 1969], No. 30725/71. Divided out of 1,264,098. Heading H1D. The disclosure is identical to that of the parent Specification, but the claims are directed to a coaxial magnetron, the coaxial cavity of which is gas-tight, is separated in a gas-tight manner from the evacuated interaction space, and is filled with a gas of a composition and at a pressure yielding a dielectric strength greater than that of air at atmospheric pressure.
Patent GB-1266439-A (GB)
IPC: B01J21/02
Filed: 1969-08-12
Abstract: 1,266,439. Hydrofluorination process. KUREHA KAQAKU KOGYO K.K. 12 Aug., 1969 [14 Aug., 1968], No. 40322/69. Heading C2C, [Also in Division Cl]  Organic compounds are hydrofluorinated using porous AlF 3  as catalyst which has been prepared by treating a SiO 2 -Al 2 O 3  mixture with HF at 200-430‹ C. and.removing SiO 2  as SiF 4 . Examples describe the hydrofluorination of acetylene to yield 1 : 1 difluorethane, and vinyl fluoride.
Patent GB-1289088-A (GB)
IPC: C07C6/04
Filed: 1970-04-07
Abstract: 1289088 Olefin conversion catalysts GULF RESEARCH & DEVELOPMENT CO 7 April 1970 [5 May 1969] 16303/70 Heading B1E [Also in Division C5] A catalyst for use in olefin conversion reactions comprises (a) alumina, (b) molybdenum or rhenium and (c) silver or copper. The catalyst may contain from 4 to 12, preferably from 7 to 9, weight per cent of molybdenum or rhenium and from 0.1 to 6, preferably from 0.5 to 3, weight per cent of silver or copper; the molybdenum or rhenium and the silver or copper may be in oxide form. The specification gives details relating to the preparation of such catalysts by methods which generally are conventional. Examples relate to catalysts which comprise gamma alumina, 8 weight per cent of molybdenum and varying amounts of silver or copper; comparative catalysts comprise gamma alumina, 8 weight per cent of molybdenum and either 2.8 weight per cent of zinc or 1.4 weight per cent of cobalt or 1.4 weight per cent of nickel or 6.0 weight per cent of gold. The alumina used in the preparation of the catalysts has a surface area of 282 m<SP>2</SP>/g, an average pore volume of 0.515 ml/g and an average pore diameter of 74 Angstroms.
Patent GB-1290526-A (GB)
IPC: A61G15/14
Filed: 1969-07-01
Abstract: 1290526 Supports for dental apparatus J M BARKER 1 July 1970 [1 July 1969] 33177/69 Heading ASR Apparatus for controlling and supporting a plurality of dental handpieces, not shown, comprises a plurality of "U"-shaped elements 19 to removably locate the said hand pieces, secured to a bar 18, and a control box, not shown, for the control and operation of the handpieces, the box being situated remote from the elements, the latter being movable independently of the control box. As shown, the bar 18 is fitted to a further bar 17 adjustably mounted in a 1ug 16a of a collar 16 which collar is secured to and rotatable with, a shaft 14 supporting a tray 12, which may also be adjustably mounted at one end of the shaft 14, which shaft is rotatably and removably mounted in a lug 11b' of a articulated arm unit 11. A further lug 11a' of this unit is rotatably attached around a further shaft 13 which may be secured to the floor or a fixed structure. The elements 19 may be formed as recesses in a bar or body, the recesses being open to the front and the body being adapted to accommodate an air like or power cable.
Patent GB-1290867-A (GB)
IPC: C03C17/06
Filed: 1969-09-29
Abstract: 1290867 Electrically heatable glass sheets COMPAGNIE DE SAINT-GOBAIN 29 Sept 1969 [27 Sept 1968] 47700/69 Heading C1M [Also in Division H5] An electrically heatable glass sheet 32 comprises a glass sheet having on a surface thereof two or more electrically conductive strips 33 which are of equal width but different lengths and which have different resistances per unit length such that the resistance of each strip is the same. Thus the thickness of each strip may be varied, or the composition of the strip may be varied. The strips comprise a mixture of a metal, e.g. silver or copper powder, and a lowmelting glass frit, optionally with the addition of TiO 2 , Al 2 O 3  or SnO. Such a composition may be applied as a suspension in a binding agent, e.g. silk screen oil or turpentine, and subsequently the sheet is baked to fuse the strips to the glass. The glass frit preferably comprises 20-60% by weight of the composition. A layer of metal, e.g. copper, may be electrodeposited over the strips The stripe may be applied by means of a toothed wheel (Fig. 3) to which suspension is supplied from a reservoir 17, one or more such devices being mounted on a frame 23 and being urged against the surface of the glass sheet by spring 26. Reference has been directed by the Comptroller to Specification 1,145,367.
Patent GB-1297457-A (GB)
IPC: C08G79/14
Filed: 1971-04-21
Abstract: 1297457 Metal-containing polymers PENNWALT CORP 21 April 1971 [27 April 1970] 10573/71 Heading C3R [Also in Division C2] Anhydrous metal-containing polymers containing repeating units of the formula where Z is Cr (III) or Fe (III), M is phosphorus or arsenic, R and R<SP>1</SP> are alkyl, aryl, alkoxy or aryloxy may be prepared by dehydrating the corresponding hydrated polymer containing repeating units of formula under reduced pressure or at atmospheric pressure at 50-200‹ C. Alternatively, the dehydration may be carried out by extractive and azeotropic distillation using benzene or toluene as solvent. In Example 1, the polymer of repeating unit [Cr(OH)(OP(C 6 H 5 ) 2 O) 2 ] is prepared by heating the corresponding hydroxyaquo polymer under vacuum at 200‹ C. In Example 2 [Cr(OH)(OP(CH 3 )(C 6 H 5 )O) 2 ] is prepared as in Example 1. In Example 3 the polymer of Example 1 is prepared by azeotropic distillation of the hydroxyaquo polymer using benzene as solvent. In Example 4, the polymer of repeating unit is prepared as in Example 1. In Example 5, the polymer of repeating unit is prepared by reacting FeCl 3  and (C 8 H 17 ) 2 - P(O)OH in water and tetrahydrofuran in the presence of Na 2 CO 3  and then drying the precipitate formed under vacuum at room temperature. In Example 6, the polymer of repeating unit [Fe(OH)(OAs(C 6 H 5 ) 2 O) 2 ] is prepared by a similar method to Example 5. The molecular weights of the polymers range from 2000 to 300,000. Solutions of the polymer in CHCl 3 , benzene, toluene or tetrahydrofuran containing a plasticizer such as tricresyl phosphate, dialkyl phthalates and chlorinated aromatics can be used as coating compositions. Uses.-Coating metals.
Patent GB-1301386-A (GB)
IPC: F04B53/12
Filed: 1970-03-20
Abstract: 1301386 Reciprocating pumps; fluid-pressure reciprocating engines; silencing gaseous flow NORDSON CORP 20 March 1970 [21 March 1969] 13614/70 Headings F1A, F1B and F1M An air motor B driving a pump A for supplying paint to a spray gun comprises a piston 33 controlling a pilot valve 54 through rod 68, the pilot valve controlling inlet/exhaust valve 37 for the upper cylinder chamber and also controlling a pilot relay valve 90 which controls inlet/exhaust valve 38 for the lower cylinder chamber. Valves 37 and 38 each comprise a head 44 which, in its left-hand position, connects cylinder passage 35 or 36 to air supply passage 41 via apertured sleeve 46, and, in its right-hand position, connects passage 35 or 36 to a respective exhaust port 111. Each valve 37, 38 has an operating piston 43 in a chamber 47 connected to the pilot valve chamber 80 and pilot relay valve, respectively. Pilot relay valve 90 has an operating piston in a chamber 94 connected to the pilot valve chamber 80. At the end of the upward stroke of motor piston 33, spring 72 acting on pilot valve rod 68 is compressed until it overcomes the force of a snap-action leaf spring assembly, Fig. 11 (not shown), biasing the pilot valve into its limit positions, the valve then rapidly moving to its upper position, as shown, where it closes exhaust port 83 and opens chamber 80 to supply pressure in passage 60. The supply pressure in chamber 80 is connected through passages not shown to pilot relay valve chamber 94 and chamber 47 of valve 37, and acts to move the pilot relay valve to connect chamber 47 of valve 38 to exhaust, valve 37 then moving to the left, as shown, to connect the upper side of piston 33 to pressure, and valve 38 moving to the right, as shown, to connect the lower side of piston 33 to exhaust. At the end of the downward piston stroke the pilot valve is moved by spring 71 to reverse the motor cylinder connections. Air exhausts through ports 111 into a silencer 23 comprising a box 110 thermally insulated from the valve casing 40 and provided with a resilient, ribbed wall 112. Narrow exhaust slots 117, e.g. 0À015" wide, adjacent wall 112 are kept clear of ice by flexing of wall 112 when pressure builds up due to ice formation. An air-pressure regulator 22 and pressure gauge 24 are provided. The pump Fig.3B, comprises a bucket piston 135 in a cylinder assembly 122, 123 secured to motor casing 16 by a bayonet coupling 127, Figs. 4 and 5 (not shown). Delivery takes place on both the suction stroke and the discharge stroke, suction chamber 139 being twice the volume of discharge chamber 138. Seal assemblies 128, 130 are spaced apart by an expanded metal sleeve 132. Chamber 120 contains paint solvent to prevent seal damage by the paint pumped. The paint is pumped through a filter, Fig. 1 (not shown), to the spray gun.
Patent GB-1307107-A (GB)
Title: Tool for applying false eyelashes
IPC: A41G5/02
Filed: 1970-12-14
Abstract: 1307107 Tool for applying false eyelashes GROOMING DEVELOPERS Inc 14 Dec 1960 59373/70 Heading B4W A tool for applying a false eyelash comprises handle portions 18, 20, clamping means 14 and lock means 16. Preferably the tool is a one-piece plastics injection-moulding. In operation, the handle portions are moved together until male element 38 frictionally engages female element 42, Fig. 5. Abutment 44 allows enlargements 34, 36 to pivot relative to each other. To release a false eyelash the handle portions are pressed as shown in Fig. 4 so that enlargements 34, 36 pivot relative to each other and the tool assumes an arrangement as shown in Fig. 5. In amodification, Figs. 9 and 10, the lock means comprises a male element 138 having a recess 141, whilst female element 142 has a chamfered edge 135 to assist location of the elements together. Guide pins 143 also help direct the elements together and chamfer 145 permits pivoting of the enlargements 134, 136.
Patent GB-1315659-A (GB)
Title: Electromagnets
IPC: H01F7/06
Filed: 1969-11-10
Abstract: 1315659 Electromagnets JOSEPH LUCAS (INDUSTRIES) Ltd 28 Oct 1970 [10 Nov 1969] 54873/69 Heading H1P An electromagnet 11, e.g. for a horn comprises plural convolutions of mild steel strip 12 interleaved with convolutions of aluminium tape 13 insulated therefrom with paper or varnish (not shown). Connections are made to the ends of the aluminium strip which is wound with the steel strip in a circular or other shaped former.
Patent GB-1318811-A (GB)
Title: Coated polymer film process for use in the production of semi conductor devices
IPC: H01L21/60
Filed: 1971-03-31
Abstract: 1318811 Semi-conductor devices TEXAS INSTRUMENTS Inc 31 March 1971 8285/71 Headings H1K and H1R A semi-conductor assembly comprises utilizing a polymer film with a plurality of grouped individual contacts adhered thereto as a contact means for a semi-conductor device, and from making connection from the device to conductive parts of a header. The film is prepared from a polyimide film by forming a layer of copper thereon, patterning the sheet to form contact areas therefrom and plating these areas with a protective layer of nickel, chromium or molybdenum followed by a plated layer of a noble metal, e.g. gold, silver or platinum. The unplated areas of the copper layer are then removed, and holes, used as indexing means, punched into the film between groups of contacts. The edges of the film and adherent contacts are then turned in to give portions of each contact on both sides of the film. The film is then made into a roll, 27, and passed sequentially through a number of operation stations where it is united with semi-conductor devices. The device, a transistor 29, is alloyed, via a back side contact, to one of the contact areas 20,at station 28, and the film moved on so that, at station 31 a wire 33 is bonded between an active region of the device and another of the contacts. A second wire 36 is added at station 37, and the device is tested. Satisfactory devices are connected via the contacts on the lower face of the film to contact posts 54, 55, 56 of an insulating header 50, and again the devices tested. Finally a can 58 is welded to the header to complete the assembly, which is again tested.
Patent GB-1325894-A (GB)
Title: Panels of plastics materials
IPC: A47G23/06
Filed: 1970-10-02
Abstract: 1325894 Trays INITIAL PLASTICS Ltd 1 Oct 1971 [2 Oct 1970] 47042/70 Heading A4A [Also in Divisions B5 E1] A panel made of plastics materials comprises a frame bounding a lattice structure and a film held around its edge so that it is tensioned over and supported by the lattice structure. The lattice structure may have a film on both upper and lower faces or a film may be sandwiched between two lattice structures. In the embodiment of Fig. 1 the edge portions of a polyester sheet 8 stretched over the lattice structure 2 are welded to the outside of the periphery 3 of the lattice structure and a separate frame 9 having an upturned rim 10 is tightly fixed around the periphcry. The lattice structure and frame may be injection moulded integrally or fabricated from individual members. The panel may be used for a variety of purposes for example as a draught excluder, as a heat insulator, or, with two transparent films, as a double glazed window.
Patent GB-1331459-A (GB)
Title: Furnace construction
Inventor: BRERETON R
IPC: F27B3/12
Filed: 1970-12-22
Abstract: 1331459 Electric furnace roofs STEETLEY (MFG) Ltd 17 Dec 1971 [22 Dec 1970] 60863/70 Heading F4B The roof of an electric arc furnace comprises concentric rings of bricks 3 on a retaining ring 4, and an annular superstructure 2 of elements 6 hinged at 9 to the retaining ring, each element providing hold-up and hold-down facilities for its associated brickwork. Each element 6 comprises a series of steel arcuate members 7 adapted to overlie alternate rings of bricks and joined by transverse members (8, Fig. 2) disposed radially of the roof. The hinges 9 are either attached to the outer ends of these transverse members or attached to the peripheral arcuate member. Fig. 3 shows one arrangement of the bricks in which loops 21 on alternate rings of bricks are joined by hooks 22 disposed on an arcuate member 23 which acts as a hold-down element. A similar arrangement of loop &c. may join adjacent rings of bricks (Fig. 5) or this arrangement may have an arcuate member between each pair of rings (Fig. 4).
Patent GB-1334229-A (GB)
Title: Preparation of a particulate mixture of manganous sulphate and  ammonium sulphate
IPC: C01G45/00
Filed: 1970-01-22
Abstract: 1334229 MnSO 4 -(NH 4 ) 2 SO 4  mixture KODAK Ltd 19 April 1971 [22 Jan 1970] 3109/70 Headings C1A and C1B A particulate mixture of manganous sulphate and ammonium sulphate, suitable for use as a fertilizer, is obtained from acid liquor containing these salts in solution by neutralizing and filtering the liquor and contacting the filtrate with one or more heated moving surfaces whereupon MnSO 4  crystals and (NH 4 ) 2 SO 4  crystals are deposited. The particulate mixture is preferably produced by placing the filtrate above the nip of a pair of contra-rotating rolls constructed from chromium plated cast iron and heated by steam at 75-100 p.s.i.g. and removing the crystals from the surfaces thereof by scraping.