baber/WOPTO huggingface dataset:
Patent GB-1427497-A (GB)
Title: Alkoxy dibenzo-b,d-pyran compounds
IPC: C07D311/80
Filed: 1974-07-17
Abstract: 1427497 Alkoxy dibenzo[b,d]pyran compounds SMITHKLINE CORP 17 July 1974 [18 July 1973] 31554/74 Heading C2C Alkoxy dibenzo[b,d]pyrans of formula in which A is a benzene, cyclohexane, or cyclohexene ring with the double bond at 6a-10a, 8 or 9; R 1  is hydrogen, methyl or ethyl; R 2  is hydrogen or OR<SP>1</SP> where R<SP>1</SP> is hydrogen or alkanoyl (2-5C), R 3  is hydrogen, methyl or ethyl and R 4  and R 5  are hydrogen or methyl at least one of R 3 , R 4 , and R 5  being other than hydrogen; R 6  is alkyl (4-8C) and R 7  is methyl or ethyl, e.g. 1-hydroxy-7,8,9,10-tetrahydro-3- (1 - methylhexyloxy) - 6,6,9 - trimethyl - 6H- dibenzo[b,d]pyran, act as central nervous system depressants and have sedative, antiarthritic and anti-inflammatory activity. Compounds with ring A as cyclohexene are prepared by condensation of 2-carbalkoxycyclohexanone with a di- or trihydroxybenzene monoalkyl ether followed by methyl or ethyl magnesium halides and acid cyclization; verbenol or analogue with di- or trihydroxybenzene monoalkyl ether in the presence of p-toluenesulphonic acid or boron trifluoride etherate, followed by treatment with boron trifluoride etherate depending on the double bond position required and the compounds may be isomerized with zinc and hydrogen chloride. These compounds may be dehydrogenated to form compounds with ring A as a benzene ring. The compounds may also be prepared by reaction of the appropriate hydroxy pyrans or pyrones with alkyl halides. Examples describe the preparation of very many compounds, such as 1-hydroxy-7,8,9,10- tetrahydro - 3 - (1 - methylhexyloxy) - 6,6,9- trimethyl - 6H - dibenzo[b,d]pyran, 7,8,9,10- tetrahydro - 3 - (1 - methylhexyloxy) - 6,6,9- trimethyl - 6H - dibenzo[b,d] pyran and others, and the 1-acetoxy, propionyloxy, 1-n-butyryloxy and 1-n-valeryloxy-3-alkoxy-7,8,9,10-tetrahydro - 6,6,9 - trimethyl - 6H - dibenzo[b,d] pyrans are also prepared.
Patent GB-652101-A (GB)
Title: Improvements in or relating to electric discharge tubes and to methods of manufacturing such tubes
IPC: H01J19/52
Filed: 1947-11-28
Abstract: 652,101. Thermionic valves. PHILIPS ELECTRICAL, Ltd. Nov. 28, 1947, No. 31562. Convention date, Sept. 10, 1946. [Class 39 (i)] In an electric discharge tube, the mica spacer 8 is located firmly in the envelope 5 before the electrode system is inserted, the latter having two or more rods 4, possibly insulated, which slide freely through holes in the spacer. Thus an exactly predetermined pressure may be applied to the bulb while sealing it to the base 2, either directly or by means of a glaze 7, without any impeding friction due to the mica 8 or risk of distorting the electrodes. The mica may be fixed against a seating 6, or located in a groove in the bulb.
Patent GB-740462-A (GB)
Title: Improvements in nuts
Inventor: SHIRLEY JOHN WALLIS
IPC: F16B39/286
Filed: 1952-12-15
Abstract: 740,462. Lock-nuts. GUEST, KEEN & NETTLEFOLDS (MIDLANDS), Ltd. Dec. 8, 1953 [Dec. 15, 1952], No. 31667/52. Class 89 (1). A stiff " nut of the type described in Specification 515,929 has one or more wings 15 and the cross-sectional area B of the or each buttress, taken in a plane at right-angles to the axis of the nut, is equal or substantially equal to the crosssectional area W of its associated wing, taken in a plane which is radial to the axis of the nut.
Patent GB-464268-A (GB)
Title: Improvements in electrode systems with unsymmetrical conductivity such as dry rectifier, or light-sensitive, cells
IPC: H01L21/08
Filed: 1936-11-19
Abstract: 464,268. Light - - sensitive cells; contact rectifiers. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. Nov. 19, 1936, No. 31732. Convention date, Nov. 22, 1935. [Class 40 (iii)] [Also in Group XXXVI] In a dry rectifier or lightsensitive cell the selenium 3 is deposited on an amalgamated layer 2 on the support 1, which may be of brass. copper or aluminium. To increase the conductivity of the selenium, mercuric chloride or calcium tungstate may be added. The insulating material 4 may be polystyrene applied as a solution in benzene. The electrode 5 may be Wood's metal.
Patent GB-629581-A (GB)
Title: Improvements relating to corrosion-resistant articles
IPC: C03B5/167
Filed: 1947-12-01
Abstract: A crucible or other apparatus in contact with molten glass comprises a core of a base metal or base metal alloy, a covering of a metal of the platinum group or an alloy of two or more such metals, and in intermediate layer, thinner than the covering, of gold or a gold-rich alloy.  The core may be of molybdenum, tungsten or an alloy of those two metals, as described in Specification 615,813, or of a nickel-chromium or nickel-chromium-iron alloy.  The gold &c. layer (e.g. 0.001 or 0.005 in. thick) may be bonded to the core or covering or both.
Patent GB-1312089-A (GB)
Title: Apparatus for crimping the end portion of a wrapper on a roll
IPC: B65B25/14
Filed: 1970-07-01
Abstract: 1312089 Securing wrappers to rolls made, for instance, of paper WARTSILA AB OY 1 July 1970 [2 July 1969] 31809/70 Heading B8C In an apparatus for crimping the projecting end portions of wrappers on cylindrical rolls, made for instance of paper, a wrapped roll 1 is either pushed, as shown, by mechanism 4 having a roller 5, or, is moved by gravity down a slope, between a pair of laterally-spaced rows of teeth 3, the mechanism 4 also carrying two rolls 6 surrounded by an endless belt for pressing the roll downwardly and holders 7 each of which extends laterally beyond the distance reached by the corresponding uncrimped end of the wrapper, and is return-bent toward the adjacent end face of the roll to maintain in position an end cover for the roll. Screws 9, driven by a motor 8, regulate the spacing of the two rows of teeth. The latter all have an apex angle of about 90 degrees, the upper interior part of the teeth being bevelled, as shown, in Fig. 3. The leading tooth in each row is considerably smaller than the others. In a modification, Fig. 2, not shown, the roll (1) rotates in a fixed position on rollers (10), a pair of endless toothed chains (3a) being located at the sides, towards the top, of the roll. The mechanism includes holders (7) for intermediate end sheets and may include a device (6) to press downwardly upon the roll (1).
Patent GB-282642-A (GB)
Title: Improvements in or relating to automatic electric cut-outs
IPC: H01H83/08
Filed: 1927-11-25
Abstract: 282,642. Siemens - Schuckertwerke Akt.-Ges., (Assignees of Siemens-Schuckertwerke Ges.). Dec. 24, 1926, [Convention date]. Void [Published under Sect. 91 of the Acts]. Automatic circuit-breakers specially adapted for operating more readily with a forward than with a reverse current or vice versa, comprise a switch arm 1 held in the closed position by two retaining devices one of which functions with a forward overload and the other with a reverse overload, the arm 1 in either case being pulled by a spring 2 into the open position. In the form shown in Fig. 1, a member 7 carried by the arm 1 is held by two latches 3, 4 connected by a spring 5 and acted upon by current coils 10, 13 and independently excited voltage coils 9, 12. With current in the normal direction coils 9 and 10 act together to lift the latch 3 and with current in the reverse direction coils 12, 13 actuate the latch 4. Retarding devices such as flies or oil cateracts may be fitted to adjust the times that elapse before the switch opens. In the form shown in Fig. 4, a beam 14 carried by the arm 1 is held in the closed position by electromagnets 17, 18 excited by the voltage coils 19, 20 and by the current conductor 21 which, when the current is in the normal direction, assists the coil 20 and acts against the coil 19 and when the current is a. reverse one, assists the coil 19 and acts against the coil.
Patent GB-365210-A (GB)
Title: Improvements in electric switches
IPC: H01H15/06
Filed: 1930-10-23
Abstract: 365,210. Mechanical switches without quick action; contacts. SCINTILLA AKT.-GES., Solothurn, Switzerland. Oct. 23, 1930, No. 31861. Convention date, Dec. 5, 1929. [Class 38 (v).] The moving contact of a push-pull switch comprises a conducting plate g, Fig. 5, situated between two similarly shaped but reversely placed insulating plates f, the whole being clamped to the operating spindle e by rivets h passing through insulating tubes. In the case of a two-pole switch there are two plates f one on each side of the spindle. The fixed contacts m, l engage the edges of the plates and recesses s in both conducting and insulating plates determine the " on " and " off " positions.
Patent GB-451690-A (GB)
Title: Process for the manufacture of anhydrides of fatty acids
IPC: C07C51/56
Filed: 1934-11-06
Abstract: Anhydrides of lower aliphatic acids together with acetaldehyde are produced by passing the vapours of ethylidine esters over metals, of Group 1b and VIII of the Periodic system (except iron, cobalt and nickel) in a form presenting a large surface.  Copper, silver, gold and the platinum metals are suitable.  A roughening of the metallic surface may be effected mechanically or chemically for instance by sand-blast or by dissolving metals such as zinc from alloys (e.g. gold with 60 per cent zinc, or brass) with hydrochloric acid, or by anodic treatment (e.g. of gold in 1 per cent sodium chloride solution, or of platinum in 10 per cent hydrochloric acid) or by alternate oxidation and reduction (of copper) or by etching (e.g. copper with nitric acid or gold with aqua regia).  In examples, ethylidine diacetate is passed through a U-tube of oval cross-section at 500--520 DEG  C., the tube being filled with (1) rolls of copper netting; (2) copper rings which have been ignited alternately in oxygen and hydrogen; (3) Raschig rings of silver roughened with nitric acid; (4) ethylidine diproprionate is passed over gold rings etched with aqua regia, at 400--420 DEG  C.; (5) ethylidine dibutyrate is passed over copper rings etched with nitric acid, at 370--400 DEG  C.  Specification 368,835 is referred to.ALSO:For the production of anhydrides from ethylidine esters, metals of Groups 1b and VIII of the Periodic system (except iron, cobalt, and nickel) are used as catalysts in a form presenting a large surface.  A roughening of the metallic surface may be effected mechanically or chemically, for instance by sand-blast, or by dissolving metals such as zinc from alloys (e.g. gold with 60 per cent zinc, or brass) with hydrochloric acid, or by anodic treatment (e.g. of gold in 1 per cent sodium chloride solution, or of platinum in 10 per cent hydrochloric acid) or by alternate oxidation and reduction (of copper) or by etching (e.g. copper with nitric acid or gold with aqua regia).  In examples a U-tube of oval cross-section is used, filled with (1) copper netting rolls; (2) copper rings which have been alternately oxidized and reduced; (3) Raschig rings of silver etched with nitric acid; (4) gold rings etched with aqua regia; (5) copper rings etched with nitric acid.  Specification 368,835, [Group IV], is referred to.ALSO:Metals having large surface may be made by dissolving a soluble metal from an alloy, e.g. dissolving zinc from a gold alloy containing 60 per cent of zinc, or from brass, with hydrochloric acid.  Specification 368,835, [Group IV], is referred to.
Patent GB-785643-A (GB)
Title: Cleaning device for the printing block wiper band in intaglio printing and embossing presses
IPC: B41F35/00
Filed: 1953-11-18
Abstract: 785,643. Intaglio printing-machines. WAITE & SAVILLE, Ltd. Nov. 18, 1953 [Nov. 24, 1952], No. 31933/53. Class 100(2) Cleaning apparatus for wiper bands. The wiper band for the printing surface in an intaglio printing press is cleaned by passing through a washing device containing a solvent for the ink and comprising two chambers in each of which is a member mounted for rotation on a shaft 38, 39 and having a number of peripherally-mounted freely-rotatable rollers 50 over which the band is passed. The washing device consists of a container 30 divided by a partition 76 into the two chambers 31, 32. The level of solvent in each chamber can be seen through a window 72, 73. The-cross shaft 38, Fig. 3, is mounted in bearings 45, 46 and carries star-wheels 47, 48 at the ends. Between corresponding arms of the starwheels are spindles 49 mounting the rollers 50. Spring-pressed brushes 52 between the rollers are radially adjustable by screws 54 so that they may engage and scrub the band as it passes over the rollers. Trays 58, 59 collect the solid ink as it settles to the bottom of the chambers. The trays are held in by clamp members 64, Fig. 2, sealing the ends 581, Fig. 3, of the tray against bars 61 fixed to the outer face of the chambers. The shafts are driven from a motor 35 through belts 37 tensioned by a jockey 44. The band passes in through a slit 81 having rubber wipers 80, round the first cleaning device, over roller 69, round the second cleaning device, over roller 70, through an outlet slit having wipers 71 and over rollers 67 and 66 passing the band out through a passage 33 under the chambers. The band is continuously fed past the.printing block wiping station and through the cleaning apparatus. The shafts 38, 39 are driven at a speed which is such that the peripheral speed of the rollers 50, where they contact the band, is greater than the speed of the band.
Patent GB-1175348-A (GB)
Title: Process for Chemically Plating Polyolefins.
Inventor: MAEKAWA HIROSHI
IPC: C23C18/20
Filed: 1968-07-04
Abstract: 1,175,348. Treating polyolefines. OKUNO CHEMICAL INDUSTRY CO. Ltd. 4 July, 1968 [13 July, 1967], No. 31998/68. Heading C3P. [Also in Division C7] A process for chemically plating a polyolefine resin surface involves wetting a surface of the resin with a stable solution containing from 10 to 90% by weight of an organic peroxide, decomposing the peroxide thereon, etching the wetted surface and then chemically plating the etched surface. Polyolefine resins: ethylene, propylene and butylene homopoly. mers, and ethylene - propylene copolymers. Organic peroxides: compounds of the formulµ: (iii) (R<SP>3</SP>CO) 2 O 2 ; and (iv) R<SP>3</SP>COOOR<SP>2</SP>, wherein R<SP>1</SP> is a monovalent organic group, R<SP>2</SP> is hydrogen or a monovalent organic group, R<SP>3</SP>CO is an acyl group, and X is hydrogen or Many peroxide compounds are specifically mentioned. Organic solvents: methyl, ethyl and isopropyl alcohols, acetone, methylethyl ketone, n-heptane, benzene, xylene, toluene, cumene, methyl acetate and dimethyl phthalate. Water may be used as or in the solvent provided the stability of the peroxide is not lost. The polymers may be treated in moulded forms (specified). Decomposition of the peroxide may be effected with inorganic acid or U.V. light, or by heating in air or a solution of alkali hydroxide or chloride. Thereafter, the polyolefine resin is etched with a sulphuric acid-potassium dichromate (or permanganate) mixture, sensitized with 35% hydrochloric acid containing stannous chloride or sulphate, and activated with 35% hydrochloric acid containing a water-soluble inorganic salt of gold, silver, palladium or platinium, e.g. palladium chloride or sulphate, in preparation for the chemical plating. Examples disclose the treatment of 5 cm. x 10 cm. x 0À3 cm. plates of propylene homopolymer with 10% aqueous solution of peracetic acid, 10% ethanol solution of benzoyl peroxide, 25% ethanol solution of tert-butyl-peroxyisobutylate and 30% ethanol solutions of cumyl hydroperoxide, diisopropyl benzene hydroperoxide, 2,5. dimethyl hexane - 2,5 - dihydroperoxide and p-menthane hydroperoxide, respectively, and of ethylene homopolymer and ethylene-propylene copolymer with 30% ethanol solutions of cumene hydroperoxide. The plates were treated to decompose the peroxide attached to the plate surface and were etched, sensitized activated, chemically plated and electroplated. In one example, an activated plate of propylene homopolymer was dipped in a nickel sulphate bath (specified) of pH 9À5 and the resulting plate was electroplated in a copper sulphate bath (specified) at a cathode current density of 3A/dm<SP>2</SP> to produce a copper layer of 20 Á thickness, was further electroplated in a nickel sulphate bath (specified) to produce a nickel layer of 7 Á thickness followed by an electroplating in a chromic acid bath (specified) at a cathode current density of 20 A/dm<SP>2</SP> to produce a chromium layer of 0À2 Á thickness.
Patent GB-1215738-A (GB)
Title: Method of moulded welding with consumable nozzle
IPC: B23K9/038
Filed: 1968-07-04
Abstract: 1,215,738. Welding by fusion. KONINKLIJKE MAATSCHAPPIJ "DE SCHELDE" N.V. 4 July, 1968 [5 July, 1967], No. 32037/68. Heading B3R.  In vertical e.g. electroslag or electrogas, welding using a fixed consumable nozzle through which a welding wire is fed, a voltage probe measures the voltage between the molten end of the nozzle and the weld. The welding supply is connected to the upper end of the nozzle 4 which is located in the gap enclosed by the plates 6 being welded and cooled melt retaining members 1 which extend the full length of the seam. In electrogas welding using, say carbon dioxide, the voltage at the lower end of the nozzle 4 is sensed by an insulated wire 12 extending along the nozzle and held in place by a sheath 14 of fibre-glass. In electroslag welding, the nozzle 4 is flux-coated and the wire is embedded in the flux. Alternatively an insulated sensing wire may be located in a groove in the nozzle. The sensed voltage either provides an indication to an operator who manually adjusts the voltage as welding proceeds or provides the signal that controls an automatic regulation of the welding supply.
Patent GB-1124904-A (GB)
Title: Improvements in or relating to lubricating greases
Inventor: CARSWELL WILLIAM DAVID
IPC: C10M169/00
Filed: 1967-07-13
Abstract: Greases comprise a lubricating oil, a thickener and 0.001-2 wt. per cent of a 1,2,4-triazole, e.g. 3-amino-1,2,4-triazole. The thickener may be a lithium soap, e.g. lithium hydroxy stearate, or a clay which may be coated with aminoamides formed from C10-C22 acids and alkylene polyamines.  The grease may also contain castor oil, aromatic amines, alkali metal nitrites, glycerol, lead naphthenates or metal sulphides.  The oil may be mineral or synthetic (no examples).
Patent GB-1430687-A (GB)
Title: Propeller assembly
IPC: F16D7/02
Filed: 1973-07-06
Abstract: 1430687 Propellers TUXON BRONZE Ltd 28 June 1974 [6 July 1973] 32240/73 Heading B7V [Also in Division F2] A boat's propeller hub contains a clutch between the shaft 26 and the hub casing 12, to limit the torque applied to the hub, e.g. if the blades strike an obstruction, or becomes fouled. The clutch consists of at least one annular rubber disc 24 or 25 disposed respectively between radial surfaces 13, 14 on the hub casing and radial surfaces 20, 21 on an assembly 17, 18 splined to the shaft 26. The torque at which the clutch slips is adjustable by screwing or unscrewing the part 18 on the part 17. The radial surfaces 13, 14, 20, 21 are faced with friction lining 15, 16, 23, 24. A grub screw 31 prevents the members 17, 18 from unscrewing during reverse running.
Patent GB-1317644-A (GB)
Title: Means for manufacturing decorated metal containers
IPC: B21D22/16
Filed: 1970-07-03
Abstract: 1317644 Spinning ornamental metal-work SILVER STAR SpA 3 July 1970 [5 July 1969] 32325/70 Headings B3A and B3J Means for shaping and simultaneously decorating a metal plate 2 comprises a lathe carrying a former 1 against which the plate is clamped by a tailstock 8, and a hand-tool 11 positioned against the post 10 on a slide 9 for spinning the plate on to the former.
Patent GB-618187-A (GB)
Title: Improvements relating to brakes for colliery winding engines or the like
IPC: B66D5/26
Filed: 1946-10-31
Abstract: 618,187. Fluid-pressure-actuated brakes. BLACK, G. A. Oct. 31, 1946, No. 32334. [Class 103 (i)] [Also in Group XXX] In a brake arrangement for a colliery winding engine or the like, the brake shoes are actuated by a piston slidable in an operating-fluid cylinder of relatively large diameter and short effective length, and movement of the piston, which is connected to a spring-loaded lever, is controlled by a valve mechanism operable by the driver and a governor, the arrangement being such that the braking effort is exerted by the spring and released by pressure of the fluid. The brake shoes 1, 2, Fig. 1, acting on opposite sides of a drum 3 are pivotally mounted on supports 4, 5, and on shoe 2 is pivotally mounted a bell-crank lever, the short arm 6 of which is connected with shoe 1 by link 6<SP>1</SP>, and the long arm 7 is connected by link 11 to a bracket 10 attached to the piston 9, Fig. 2, in the cylinder 8. Also connected to bracket 10 is one end of a lever 12, the other end of which is pivotally anchored at 14, and to an intermediate part of which is attached depending link 15 carrying plate 16 which supports a plurality of springs 17 in contact at their upper ends with the fixed structure 13. Beneath cylinder 8 is located a valve 18 which admits and exhausts fluid to and from the cylinder, and which is actuated by rod 24, the arrangement being such that brake shoes 1, 2 are applied to the drum by springs 17 when cylinder 8 is exhausted. In the embodiment shown in Fig. 3, shoes 25, 26 are respectively pivotally attached to the elbow of bell crank-lever 27 and the upper end of link 28, the lower ends of which are pivotally anchored at 29 and 30 respectively and the lower ends of the shoes are adjustably connected to lever 27 and link 28 by ties 31 and 32. Link 28 is connected by link 33 to another pivotally anchored link 34 to the top of which is pivotally mounted a bell-crank lever, the short arm 36 of which is connected by link 38 to lever 27 and the long arm 37 is connected, by link 39, to an operating mechanism similar to that described above. In a further embodiment, Fig. 4, shoes 40, 41 are pivotally mounted on the short arms of a pair of bell-crank levers 42, 43, pivoted on blocks 44, 45, the long arms of which levers are pivotally connected by links 46, 47 to lever 48 which is pivotally connected to a bracket 49 connected with an operating mechanism similar to that described above. Normally, the fluidpressure device is operated by steam or some other elastic fluid, but in a modification, Fig. 5, hydraulic fluid is admitted by a piston valve 54 to operate rams 51, 55, the latter working against the pressure of springs 57 provides elasticity, which rams are both connected by a linkage mechanism to the piston valve in such a way that displacements of either or both of the rams are transmitted to the valve in the direction for closing its inlet.
Patent GB-1090077-A (GB)
Title: Improvements in or relating to multiple electrical connectors
Inventor: CHANDLER WALTER
IPC: H01R13/64
Filed: 1963-08-15
Abstract: 1,090,077. Two-part couplings. PLESSEYUK. Ltd. Aug. 6, 1964 [Aug. 15, 1963], No. 32382/63. Heading H2E. A multiple connecter comprises two cooperating members each carrying a number of plug and socket contacts and having a mating face arranged in two levels, socket contacts 3 being recessed into the higher level of the face and contact pins 4 extending from the lower level but not projecting as far as the higher level. A metal collar 5 on the member shown has an axial spline 6 which co-operates with a slot on the co-operating member to ensure correct relative orientation of the members. In a second embodiment, the two raised symmetrical segments may be replaced by two segments of different size, in which case no spline and key combination need be provided.