baber/WOPTO huggingface dataset:
Patent GB-737359-A (GB)
Title: Improvements in or relating to preparation of improved alumina
IPC: C01F7/36
Filed: 1953-10-21
Abstract: Aluminium alcoholates, for use in the production, by hydrolysis, of alumina, may be produced by reacting an alcohol preferably having 1-10, better 5-8 carbon atoms per molecule with aluminium metal between 75 DEG  and 300 DEG  F.  A suitable solvent such as a paraffin hydrocarbon or solvent naphtha may be used. In examples, aluminium and isopropyl alcohol are refluxed using n-heptane as solvent and a mercury or mercuric chloride catalyst. Other alcohols mentioned are methyl, ethyl, propyl, butyl, amyl, hexyl and heptyl.ALSO:<PICT:0737359/III/1> Gamma alumina is produced by contacting an aluminium alcoholate with water vapour (e.g. steam or humid air) drying the so-formed boehmite preferably at 230 DEG  F. and heating the dried boehmite at 600-1600 DEG  F., preferably 600-1000 DEG  F.  The use of water vapour avoids bayerite formation. The alcohol used in formation of the alcoholate preferably has 1-10, better 5-8 carbon atoms/molecule (see Group IV (b)).  A catalytically active metal or metal compound may be added at any stage from before the formation of the alkoxide, or may be added to the gamma-alumina itself. Catalysts mentioned are silica, iron, cobalt, nickel, vanadium, chromium, and tungsten, but 0.2-20 per cent by weight of platinum (better 1-5 per cent) or molybdenum oxide (better 5-10 per cent) are preferred.  In the flow sheet shown in Fig. 1, aluminium turnings and alcohol are passed into reactor 12 and after reaction pass to settling vessel 23.  The solid alcoholate and some or all of the supernatant solution then pass to hydrolysis vessel 29, the remainder, if any, of the supernatant solution being recirculated. Moisture-laden air is passed into vessel 29 above the surface of the alcoholate.  The boehmite is then filtered off, dried and heated to produce gamma alumina; the filtrate being recycled to the reaction vessel.  In a modification the alkoxide and its supernatant solution are separately hydrolysed and dried. Examples with details of the properties of the products are given.
Patent GB-668819-A (GB)
Title: Improvements relating to suction cleaners
IPC: A47L5/32
Filed: 1950-11-28
Abstract: 668,819. Suction cleaners. HOOVER, Ltd. .Nov. 28, 1950 [Nov. 29, 1949], No. 29078/50. Class 8 (i) In a suction cleaner of the handle propelled type having a converter port 30 in the wall 18 of the suction passageway 17 opposite the fan eye 22 for the insertion of a converter 50 in a direction generally along the fan axis and normally closed by a removable cover. 31, the latter carries a thread guard comprising a radial partition 39. The cover 31 is guided during replacement by the guard 39 sliding in a groove 37 cut in a casing rib 34, and the converter has a lug 55 which also slides in said groove 37. The guard 39 closely embraces a pulley 25 to prevent a brush driving belt 27 from slipping off the pulley.
Patent GB-464691-A (GB)
Title: Improvements in the mounting and employment of guns on aircraft
IPC: B64D7/02
Filed: 1935-10-22
Abstract: 464,691. Gun mountings for use on aircraft. SHORT BROS. (ROCHESTER & BEDFORD), Ltd., and GOUGE, A. Oct. 22, 1935, No. 29119. [Class 92 (i)] [Also in Group XXXIII] A flying boat is fitted with a central gun or two side-byside guns pivoted for fore-and-aft elevational adjustment and adapted to fire downwards through an aperture or apertures in the hull, the pivot being so located that, when firing directly downwards, the recoil is directed towards the centre of gravity of the aircraft, means being provided for closing the aperture or apertures in a watertight manner when the gun or guns are withdrawn into the boat. The pivoting point is preferably arranged at such a distance immediately below the centre of gravity that the desired arc of fire is obtained with the aperture space available. Fig. 1 shows a single gun b pivotally movable on trunnions b<1> supported from the wing structure by a pyramidal frame b<2>. The gun fires through a longitudinal aperture a<1> which is closed by a watertight plug when the gun is withdrawn to occupy the horizontal position shown. A gimbal joint at b<1> permits a limited transverse adjustment of the gun across the width of the aperture. Fig. 3 shows a pair of guns supported by a common pivot e<3> on a frame e<4>. Each gun can be moved transversely on a pivot e<2>.
Patent GB-230396-A (GB)
Title: A washing basin for use with motor vehicles and the like
IPC: B60R15/04
Filed: 1924-12-05
Abstract: 230,396. Thomas, D. Dec. 5, 1924. Wash basin with hot-water supply.-A basin receives a supply of hot water from a source associated with the engine supplemented by a supply from a tank forming part of the lid. A circular basin is arranged in a rectangular box with an apertured plate 11, hot water being supplied from the radiator through a pipe 13. The face of the tank fitted in the lid may carry a mirror 2 and soap, towel, &c. supports.
Patent GB-1435145-A (GB)
Title: Photographic anti-halation layer
IPC: G03C1/93
Filed: 1973-06-20
Abstract: 1435145 Photographic anti-halation layer CIBA GEIGY A G 18 June 1974 [20 June 1973]  29285/73 Heading G2C  Photographic film material carries on one side of the film base an anti-halation layer having a binder of hydroxypropyl cellulose. The layer is not removed in the alkaline development bath during  processing but is removed in an aqueous wash bath between development and fixing. The film base may be treated by corona discharge or with an etching solvent e.g. trichloracetic acid and/or be coated with an anchoring layer e.g. of methyl acrylate/acrylic acid copolymer or vinyl acetate/ crotonic acid copolymer before the anti-halation layer is coated. A protective layer such as an ammonium salt of a p-hydroxybenzoic acid dimethylol cresol condensate or of a methyl methacrylate-methacrylic acid copolymer may be coated on the anti-halation layer followed by a wax lubricating layer. Alternatively, the protective layer may comprise a p-hydroxybenzoic acid dimethylol cresol condensate or methylacrylate-acrylic acid layer covered by the corresponding sodium or ammonium salt of said polymer.
Patent GB-210742-A (GB)
IPC: C07C7/148
Filed: 1923-11-20
Abstract: Anthracene, obtained according to the process of the parent Specification by distillation with petroleum hydrocarbons of boiling point 260-315 DEG  C., is freed from carbazole by passing its vapour over or through caustic potash.  In examples, the vapours of distillation in the process of the parent Specification, consisting of anthracene, carbazole and petroleum hydrocarbons, are passed through fused potash at 260-300 DEG  C. or through a revolving tube charged with granulated potash and maintained at 150-160 DEG  C. Anthracene crystallizes from the distillate.  Carbazole is obtained from the potassium carbazole by boiling with water and may be purified by a single distillation with high boiling hydrocarbons or by crystallization.  Both products are of over 90 per cent purity. The Specification as open to inspection under Sect. 91 (3) (a) describes the use of caustic alkali generally.  This subject-matter does not appear in the Specification as accepted.
Patent GB-654216-A (GB)
Title: Improvements in or relating to movable poultry folding units or pens and other heavymovable objects
IPC: A01K31/22
Filed: 1948-11-11
Abstract: 654,216. Load-handling apparatus. CORNISH, E. T. Nov. 11, 1948, No. 29331. [Class 78 (iii)] [Also in Groups I and XXXII] In a device for movably supporting poultry folding units or pens or other heavy objects comprising a two-armed lever provided at the junction of its arms with means for effecting a pivotal connection with a mounting member secured on the object, one of said arms constituting a handle and the other carrying a wheel at its free end, whereby on movement of the handle in one direction about the pivotal connection the wheel is pressed downwards against the ground or other supporting surface and raises the object from said surface, the mounting member comprises a sleeve secured on the pen or other object and the pivotal connection of the lever therewith is constituted by a pin on the lever axially slidable within said sleeve whereby the lever is readily detachable, means being provided for retaining the lever against detachment from the sleeve in the pen-supporting position of the device. The Figures show a device for moving a poultry pen comprising a crank arm 10, one end 11 of which forms a journal for a wheel 12 whilst the other end 13 is adapted to be engaged in one of two sleeves 17 on a member 14 secured to the pen, and a handle 16 secured to the arm. To move the pen, a device is located at each side of the pen with the end 11 of its arm 10 engaging in a sleeve 17 and with its wheel resting idly on the ground as shown in chain lines in Fig. 3. The handles 16 are now turned clockwise whereby the pen is raised and its weight taken by the wheels. Rotation of the handles is limited by abutments 21 on the pen, and heads or enlargements on the outer end of these abutments retain the levers against detachment from the members 14. After the pen has been moved, the devices are returned to the chain line position so that the base of the pen again rests on the ground. The handles 16 may be arranged in alignment with the arms 10.
Patent GB-898991-A (GB)
Title: Process for dyeing or printing textile materials
IPC: C09B9/02
Filed: 1960-08-25
Abstract: In the dyeing or printing of textile materials such as those of cellulose or aromatic polyester fibres with vat dyestuffs, the materials are impregnated or printed with a leuco-vat dyestuff in which the hydroxyl groups formed by reducing the keto groups are esterified with a carboxylic or sulphonic acid of which the acyl residue contains at least one group imparting solubility in water, such as quaternary ammonium or preferably a sulphonic acid group, and at any stage of the process prior to the oxidation to reform the vat dyestuff, the leuco ester is treated with an alkali and a strong reducing agent consisting of sodium hydrosulphite or thiourea dioxide.  The aqueous dyebath, padding liquor or printing paste may contain the leuco ester, the alkali, e.g. sodium hydroxide, and the reducing agent, or, alternatively, the materials may first be padded with an aqueous solution of the leuco ester, then, if desired, dried and, subsequently treated with an aqueous solution of the alkali and the reducing agent, and in either case the materials are finally heated or streamed and oxidised, if desired, in the presence of an oxidising agent such as hydrogen peroxide or sodium perborate.  The vat dyestuffs from which the leuco esters are derived may be of the anthraquinone, perylene or indigoid series and the esterifying acyl residue may be that of an aliphatic, heterocyclic or, more especially, an aromatic acid.  Examples are given.  Specifications 337,846, 497,327, 720,790, 741,053 and 769,688 are referred to.
Patent GB-1508699-A (GB)
Title: Method of preparing polymeric thiols from polymeric nitroesters
IPC: C12N11/02
Filed: 1976-07-15
Abstract: 1508699 Polymeric thiols CESKOSLOVENSKA AKADEMIC VED 15 July 1976 [25 July 1975] 29495/76 Headings C3A and C3P Polymeric thiols are obtained by (1) reacting a polymeric nitroester of formula P-O-NO2, in which P is the polymeric backbone of either cellulose or a methacrylate polymer containing pendant hydroxyl groups, with a sulphur compound selected from thiourea, an alkali metal xanthate, ammonium dithiocarbamidate or an alkali metal or ammonium sulphide or hydrosulphide, and (2) hydrolysing the reaction product. In examples, cellulose nitrate and nitrated 2-hydroxyethyl methacrylate/ethylene glycol dimethacrylate copolymer are each reacted with thiourea and then hydrolysed with NaOH, and the same copolymer is reacted with potassium ethyl xanthate and then hydrolysed with dilute ammonia.
Patent GB-1008773-A (GB)
Title: Improvements relating to flat warp knitting machines
Inventor: PORTER ALLAN WILLIAM HENRY
IPC: D04B27/00
Filed: 1961-08-16
Abstract: 1,008,773. Knitting-machines. HOBOURN AERO COMPONENTS Ltd. Aug. 16, 1962 [Aug. 16, 1961], No. 29588/61. Heading D1C. [Also in Division F2]. A flat warp knitting machine having a warp let off mechanism in which a movement dependant on the connection to the ratio of an infinitely variable speed gearing 20, 21, 52 is fed back to two switches 38, 39 so that they are moved bodily in such a direction that the switch which had been closed as a result of relative movement between the sensing device and the control member tends to be re-opened. A cone 20 driven from a shaft 15 by gears 17, 18 drives a second cone 21 by means of a ring 22 the position of which is adjustable by means of a lead screw 24. The second cone 21 is connected through gears 30... 32, a worm 33 and a worm wheel 34 to a shaft 13. A shaft 12 carrying a yarn disc 9 is rotated by the warp sheet leaving the corresponding warp beam and its speed of rotation is compared with that of the shaft 13 in a differential contained in a cage 40a. Electrical contacts in the cage 40a cause solenoids 40, 41 (not shown) to operate a clutch 42, splined to the shaft 13, into engagement with either one of a pair of bevel gears 43, 44. According to which of the bevel gears 43, 44 is engaged a second lead screw 49 is rotated in one direction or the other causing a variation in the position of the drive ring 51 of a third cone 52 which, being connected by means of the assembly 54... 61 to the output shaft 62 driving the warp beam, causes a variation in its speed of rotation. The cage 40a is turned by a worm gearing 64 on the lead screw 49 to assist the adjustment process by turning in the opposite direction to re-open the closed contacts. Specification 625,894 is referred to.
Patent GB-1437212-A (GB)
Title: Heat transfer assemblies
IPC: B64G1/50
Filed: 1973-06-22
Abstract: 1437212 Cooling apparatus NATIONAL AERONAUTICS & SPACE ADMINISTRATION 22 June 1973 [28 June 1972] 29654/73 Heading F4U [Also in Division H1] A heat transfer assembly for transmitting thermal energy from a heat source 19 between two surfaces with the assistance of an ionic wind created by a corona discharge comprises a sealed container 16 enclosing an inert gas, e.g. nitrogen or neon, and having two opposed walls 18, 20 of differing size of thermally conductive material and connecting wall or walls 22 of low thermal conductivity. Electrodes 24, 26 are positioned adjacent the walls 18, 20 respectively without arcing and having the voltage adjusted relative to the walls to a corona potential for creating an ionic wind of the gas. The ionized molecules must contact the conducting walls to be neutralized and therefore pass through the isothermal boundary layers to achieve maximum thermal energy transfer. Baffles 28 adjacent the electrodes regulate gas flow between the walls 18, 22 by utilizing the high pressure zone adjacent the electrodes. The interior surface of wall 20 has a configuration to maximize the ionic winds from several electrodes 26, and the variable voltage source 32 can be controlled by a temperature control 34 responsive to a thermocouple 36 connected to the wall 18.
Patent GB-598516-A (GB)
Title: Improvements relating to means for delivering finely divided materials into containers
IPC: B65B1/40
Filed: 1945-11-07
Abstract: 598,516. Filling containers. VALLEY PRODUCTS (LYE), Ltd. (formerly VALLEY COMPONENTS, Ltd.), and TEARNE, W. Nov. 7, 1945, No. 29696. [Class 94 (i)] [Also in Group XXX] A machine for delivering materials such as powders or plastic substances into a carton or other container comprises a feeding means intermittently rotatable by a member adapted to be oscillated by a crank operated by rotation of a drive shaft, and means are provided between the drive shaft and oscillating member whereby the portions of a revolution of the shaft utilised for oscillating the member in its operative and return strokes are of different magnitudes in order that the duration of the feeding stroke or idle return stroke may be long relatively to the other. Material in the hopper 10, Fig. 1, is fed through a nozzle 11 into containers successively positioned thereunder by means of an intermittently rotating feed-screw 12 operated by a pinion 16, Figs. 1 and 3, through a one-way clutch 15, shaft 14 and bevel gears 13, the pinion 16 being loose on the shaft 14. A crank shaft 21, which is the driving shaft of the machine, is continuously rotating in any suitable manner, and by means of a crank arm 20 having a crank pin 19 sliding in a slot in a tail bar 27, imparts oscillatory motion to a toothed quadrant 17 attached to the bar 27 and engaging the pinion 16, whereby the latter is rotated in alternate directions, the clutch 15 operating so that the screw 12 rotates only during one direction of rotation of the pinion. The pin 19 is secured to a nut 29 engaging a screwed rod 30 secured to the crank arm 20, so that the radial distance of the pin 19 from the axis of the shaft 21 is adjustable, to control the amount of rotation of the screw 12 driving each revolution of the shaft 21. A lever 26 acts to uncouple the shaft 21 from an actuating pulley shaft 24. Fig. 3 shows diagramatically that one of the swings of the quadnant 17 takes place during more than half a revolution of the shaft 21 and the other swing during less than half, so that either the working or idle period of the screw 12 may be of longer duration, as determined by the arrangement of the clutch 15, and according to the time taken to fill and to replace a container.
Patent GB-1187457-A (GB)
Title: Improvements in or relating to Apparatus for Producing cold and/or Liquefying a Gas
IPC: F04F5/46
Filed: 1967-06-28
Abstract: 1,187,457. Ejectors. PHILIPS' GLOEILAMPENFABRIEKEN N.V. June 28, 1967 [July 1, 1966], No.29782/67. Heading F1E . [Also in Division F4] An ejector for use in a refrigerating and/or gas liquefying apparatus (see Division F4) is made of, or has part or the whole of its jet pipe 23 made of, heat insulating material, e.g. glass or synthetic material, to increase it efficiency by preventing heat conduction along the surfaces in contact with the inducing fluid, e.g. helium.
Patent GB-835437-A (GB)
Title: Improvements in and relating to the production of polymers and copolymers of acrylonitrile
Inventor: FIELD JOHN EDWARD
IPC: C08F4/04
Filed: 1956-10-01
Abstract: Isotetrazenes of the general formula <FORM:0835437/IV (b)/1> wherein R1 is a monovalent radical having a carbon atom attached directly to the N atom, R11 is hydrogen or a monovalent radical attached directly to the N atom and R111 is a carbonamido group, are prepared by coupling semi-carbazides having the general formula NH2-CO-NH-NHR11 (R11 being as defined above) with a diazotized amine having the general formula <FORM:0835437/IV (b)/2> (R1 being as defined above) X being a salt ion such as Cl or HSO4.  Specified R1 groups are phenyl and m-nitrophenyl groups and specified R11 groups are alpha-propionic acid ethyl ester and isobutyronitrilo groups. Specifications 626,155 and 796,294 are referred to.ALSO:Acrylonitrile, alone or with a minor proportion of another polymerizable compound, e.g. styrene, methyl acrylate, vinyl acetate or vinyl pyridine, is polymerized with the aid, as a catalyst, of an isotetrazene of the general formula <FORM:0835437/IV (a)/1> wherein R1 and R111 are monovalent radicals having a carbon atom attached directly to the N atom in both cases and R11 is hydrogen or a monovalent radical having a carbon atom attached directly to the N atom.  Representative R1 and R111 groups are guanyl, nitrosoaminoquanyl, tetrazoyl, phenyl, carbonamido and m-nitrophenyl groups; representative R11 groups are alpha-propionic acid ethyl ester and isobutyronitrilo groups.  Polymerization may be carried out in solution in concentrated aqueous or aqueous/alcoholic sodium thiocyanate or in aqueous emulsion using turkey red oil as an emulsion.  Specifications 626,155 and 796,294 are referred to.
Patent GB-1135141-A (GB)
Title: Improved auxiliary overdrive gear
Inventor: BURNETT STANLEY FREDERICK
IPC: F16H3/54
Filed: 1966-07-04
Abstract: 1,135,141. Epicyclic change-speed gear. SELF-CHANGING GEARS Ltd. 23 June, 1967 [4 July, 1966], No. 29886/66. Heading F2D. An overdrive gear unit comprises a threeelement epicyclic gear controlled by a disc clutch-brake unit of which the clutch 15 is normally engaged by loading springs 27 to lock the sun-wheel 12 and the planet carrier 2<SP>1</SP> for direct drive, the brake 22 being engageable to hold the sun-wheel for overdrive through the planets 9 and annulus 10. The brake is controlled by a pneumatic piston 28, loaded by return springs 35, to effect a progressive change of drive. A light spring 29 urges the clutch-- brake unit to the left to avoid frictional drag from the brake reaction plate 26 during direct drive. In a modification, Fig. 4 (not shown), the planet pins (8<SP>1</SP>) are lengthened to drivingly engage one set of clutch discs (14) and the brake operating piston incorporates a diaphragm (34<SP>1</SP>).
Patent GB-305615-A (GB)
Title: Folding box
IPC: B65D5/22
Filed: 1927-11-08
Abstract: 305,615. Krotoschin, S. Nov. 8, 1927. Boxes made from special blanks; covers; lined boxes. -In order to protect the contents of a box A, Fig. 1, against pressure the cover B is made in the form of a hollow box-shaped member, from the blank shown in Fig. 4, which is adapted to be slipped freely into and out of the box A. The cover is supported in the box by a sheet 5 of cardboard pasted thereto, or by inwardly projecting flanges 16, Fig. 6, on the side walls of the box. The member B may be made from corrugated paper. A blank suitable for forming the box A is also described.
Patent GB-934774-A (GB)
Title: Apparatus for preliminary singling of bobbins
IPC: B65H67/06
Filed: 1961-08-18
Abstract: 934,774. Rollers. J. TIMMER, and K. TIMMER, [trading as JOSEF TIMMER KOMM.-GES.]. Aug. 18, 1961 [Aug. 25, 1960; April 5, 1961], No. 29959/61. Drawings to Specification. Class 42 (2). [Also in Groups IX and XXX] Apparatus for the preliminary singling of bobbins (see Group IX) comprises at least one roller fitted with magnets so that, when a mass of bobbins is fed to the vicinity thereof, bobbins are individually attracted, gathered and advanced to a delivery point by the roller. The magnets may be axially extending, permanent and/or electromagnets, inlaid on, and spaced at intervals around, the periphery of a (hollow) roller, Figs. 2 and 3 (not shown). The roller may co-operate with a counter-roller rotating in the same sense at similar or different peripheral speed and incorporating magnets. Electromagnets are supplied with power through slip contacts or rings (not shown).
Patent GB-305700-A (GB)
Title: Improvements in and relating to signalling device and the like for road vehicles
IPC: B60Q1/34
Filed: 1927-11-09
Abstract: 305,700. Marks, E. C. R., (Gater, W.). Nov. 9, 1927. Road-traffic signals on vehicles.-A signalling device for motor vehicles comprises an arm a pivotadly mounted on a circumferentially grooved wheel d which is rotatable on an annular bearing e so that, by means of a handle b, the arm a may be rotated on its longitudinal axis and also on an axis at right-angles thereto. A clip h engages a finger i to hold the arm in the inoperative position. A lamp j located in an aperture k in the arm is automatically lighted when the arm is brought into the signalling position. A hinged plate n carrying a guard n<1> for the lamp serves as a mounting for the lamp, a turn clip n' securing the plate flat against the arm.