baber/WOPTO huggingface dataset:
Patent GB-802676-A (GB)
Title: Improvements in or relating to stationery feed and carbon strip advancing mechanisms for typewriting or like machines
Inventor: MURRAY SAMUEL MAHOOD
IPC: B41J17/00
Filed: 1953-05-08
Abstract: 802,676. Typewriters. FANFOLD, Ltd. Dec. 30, 1955 [May 8, 1953], No. 12959/53. Class 100(4) A mechanism for feeding superposed stationery webs and interleaved carbon strip, the latter at a considerably slower rate, has pin feed means to engage marginal perforations in the webs after the latter have left the platen roll, and additional pin feed means to engage the perforations in the webs before they reach the platen to advance the webs towards the platen the two pin feed means being driven, from the platen shaft e.g. via 31- 36, at the same speed. The pin feed means may comprise pin wheels, but as shown consists of laterally adjustable units each comprising pins 16 mounted on an endless belt on supporting and driving wheels. The carbon strip advancing mechanism B is adjustable about axis 8 by means of vertically adjustable posts 10. When solenoid 50 is energized, by movement of a part of the tabulating machine which moves each time the webs are advanced, e.g. the type bar or part moved in timed relation therewith, plunger 49 pulls rocker arm 45, against spring 48, actuating pawl 46 and ratchet wheel 44 and, via gears 42, 41, shaft 40, worms 39 and gears 38 turning shafts 37 which carry the rolls 12a of carbon strip. Preferably the adjustment is such that a loop is formed in the webs between the platen and the feed units at the input side. Specification 645,361 and U.S.A. Specifitcation 2,467,135 are referred to. Reference has been directed by the Comptroller to Specifications 757,302 and 757,306.
Patent GB-579185-A (GB)
Title: Improvements in cellular products
IPC: C08J9/30
Filed: 1944-07-07
Abstract: A light-weight, multicellular, resilient, soft, dry foam product suitable as a wing filler in aircraft is a polymerized stable gelled foam of an aqueous emulsion comprising a water-soluble urea-formaldehyde or thiourea-formaldehyde resin, a vinyl ester of a lower aliphatic acid and a polymer of an alkyl ester of acrylic acid in which the alkyl radical contains from 1 to 4 carbon atoms.  The product is prepared with the aid of an emulsifying and frothing agent which will function in a pH range of 3.5-6.8, i.e. insufficiently acid to cause gelling.  Suitable agents are sulphonated long-chain alcohols, fatty alcohol sulphate soaps, sodium alkyl sulphates, or reaction products of alkylene oxides with aliphatic alcohols.  A chlorinated hydrocarbon, e.g. ethylene dichloride, propylene dichloride, chloroform, chlorbenzene, carbon tetrachloride or benzyl chloride may be added to strengthen the foam and increase the relative volume.  The mixture is frothed in a machine such as a Hobart mixer to a predetermined density and gelled by addition of acid to bring the pH value from about 2-3.  The stable gelled foam can be polymerized to harden it at 90-150 DEG  F.  If desired, it may first be dried.  Addition to the emulsion before frothing of 5-20 per cent of the weight of the urea resin, of polyvinyl chloride increases the resistance to burning of the final product.  In the example, methyl acrylate is emulsified with water and isopropyl naphthalene sulphonate.  Hydrogen peroxide is added and the emulsion heated at 70-90 DEG  C. to form a latex of partially polymerized methyl acrylate.  Vinyl acetate is emulsified with water and the emulsifying agent known under the Registered Trade Mark "Modinal D", and the pH is adjusted to 4.5.  The urea-formaldehyde resin is prepared by reacting urea and aqueous formaldehyde in a molar ratio of 1 : 2 at a pH of 4-5 for 60-90 minutes, neutralizing, drying and grinding the product, which is then emulsified with water and Modinal D.  While stirring the acrylic ester latex is added, followed by the vinyl acetate emulsion and propylene dichloride.  The pH is between 3.5 and 6.8. The emulsion is frothed until 1000 ccs. of foam weigh 70 grams and aqueous tartaric acid is added with continued mixing to produce a pH of 2-3.  The gelled foam may be formed into sheet or shaped in moulds, handling being facilitated by heating to 130 DEG  F. for about 20 minutes.  Final drying is effected at 130 DEG  F. for 40-60 hours. Ethyl, propyl or butyl acrylate may also be used.
Patent GB-789577-A (GB)
Title: Improvements in sound recording apparatus
Inventor: BRASSEUR EUDORE
IPC: G11B5/86
Filed: 1956-04-27
Abstract: 789,577. Magnetic sound recording and reproducing apparatus. ATELIERS DE CONSTRUCTIONS ELECTRIQUES DE CHARLEROI. April 27, 1956 [May 27, 1955], No. 12994/56. Class 40 (2). In a magnetic recording apparatus having a record 5 which is advanced step-by-step and receives a sound track of zig-zag shape from a recording-head 9 reciprocated across the record, a second recording head 10 is provided, both heads being controlled by a coupling device and arranged either for simultaneous recording upon superposed single-faced records 5, 6, or successive recording upon the two faces of a doublefaced record. The record or records 5, 6 are advanced by worm-wheels 1, 2, as described in Specification 789,040, and the recording heads 9, 10 are arranged respectively above and below the records on arms 7, 8, coupled together by a rack-and-pinion mechanism 17-19, Fig. 2, and moved simultaneously in opposite directions by an oscillating shaft 14. The arm 7 is pivoted on a yoke 27 fixed to a shaft 141 clutched to the shaft 14 and the arm 8 is pivoted on a yoke 16 freely mounted on the shaft 14, the yoke 27 carrying the rack 18 which drives the yoke 16, carrying the rack 17, through the pinion 19 which is carried-by a fixed shaft 20. The shaft 14<SP>1</SP> is carried by the lid 13 of the mechanism and carries a magnetic clutch member 22 having cross-shaped projections 35 engaging corresponding grooves in a similar magnetic clutch member 23 on the shaft 14. The heads 9, 10 may be energized simultaneoulsy for recording on superposed records or one head may be energized to record on one side of a double-faced record and the other head energized to record on the other side after reversal of the direction of movement of the record. In a modification the shaft 14 terminates below the level of the record and the upper head 9 is carried by an arm bent so as to clear the side of the record, permitting records of greater length than the arms 7, 8, to be used. The records are of sufficient thickness to prevent interference between the two magnetic layers.
Patent GB-115998-A (GB)
Title: Improvements in and relating to Gas Burners.
Inventor: HUMPHREY ALFRED HENRY
IPC: F23D14/10
Filed: 1917-09-11
Abstract: 115,998. Humphrey, A. H. Sept. 11, 1917 Gas fires.-The radiants 15 are supported on a base 16, above the burner heads 11 of an atmospheric gas burner, these heads being provided with parallel thin bars 13.
Patent GB-163588-A (GB)
Title: Apparatus for raising and delivering liquids
IPC: F02M37/02
Filed: 1920-05-11
Abstract: 163,588. Sanders, J. M. May 11, 1920. Vacuum apparatus.-In a apparatus for raising liquids, of the kind in which the interior of a chamber having an inlet and outlet for the liquid is alternately subjected to suction and atmospheric pressure, the suction and atmospheric connections are controlled by a, piston valve A provided with a perforation A<1> connecting the interior of the chamber to a groove A<2> in the piston. The valve is operated by a float M, which, in the raised position, puts the channel A<2> into communication with the atmosphere, and in the lower position brings it into register with the suction port C. The float operates also the valve B controlling the flow of liquid from the chamber to a lower chamber N open to the atmosphere through a pipe I. The valve B is of smaller area than the valve A, so that the float operates the valve A with a snap action. The end of the inlet pipe E is submerged in the liquid and the outlet pipe enters a cup H always full of liquid.
Patent GB-272669-A (GB)
Title: Improvements in cup saucer and plate sets
IPC: A45F3/20
Filed: 1926-05-21
Abstract: 272,669. Bolton, E. M. May 21, 1926. Plates, dishes, and saucers.-A combined saucer and plate adapted to fold together as shown at Fig. 3 to enclose a collapsable cup, without rattling, is formed so that the plate supports the saucer when the combination is opened. Fig. 2 shows the saucer and plate hinged together, the saucer resting on the tailpiece r of the plate in the open position. Fig. 4 shows a projection f on the plate passing through a slot in the saucer to form a kind of loose hinge. The hinge may be made detachable by forming a hinge pin or peg on one member adapted to be moved axially into a slot on the other member. In some cases the hinge may be dispensed with. and the rim of one part arranged to engage frictionally with a recess on the other part. A spring clip p holds the appliance in the closed position. The cup is fitted with a heat-insulating handle c<11>.
Patent GB-1397047-A (GB)
Title: Method of collective orientation of the molecules of a  mesomorphous liquid crystal interposed between two walls
IPC: G02F1/1337
Filed: 1973-03-19
Abstract: 1397047 Modulating light COMMISSARIAT A L'ENERGIE ATOMIQUE 19 March 1973 [31 March 1972] 13068/73 Heading H4F A homotropic alignment is imposed on a layer of a mesophase between two walls by depositing on the walls a thin crystalline or liquid crystalline film wherein elongate molecules are disposed in parallel planes and oriented transversely to those planes, i.e. a smectic phase or a solid material with layers having the molecular alignment of a smectic phase. As particularly described a crystalline smectic material with A phase (molecules at 90 degrees to the wall) or C phase (molecules inclined to the normal to the wall) alignment forms the film and is deposited by vacuum evaporation to 500 Š. The mesophase layer may be nematic, e.g. p-methoxybenzylidene p-n-butylaniline, 50 Á thick, or a mixture of mesophases, e.g. cholesteric and nematic. The aligned phase may form part of an electro-optic cell, e.g. showing variable birefringence and disposed between polarizers for a colour filter or in a light beam addressing device as in Specification 1,383,969. Use of a magnetic field is also referred to.
Patent GB-1381666-A (GB)
Title: Compositions containing copper salts their methods of production and the recovery and purification of copper
IPC: C01G3/00
Filed: 1972-03-21
Abstract: 1381666 Stabilized cuprous salt solutions AUSTRALIAN NATIONAL UNIVERSITY 21 March 1972 [2 April 1971(3) 28 April 1971 4 June 1971 14 Sept 1971 24 Sept 1971 20 Oct 1971 26 Oct 1971 14 Dec 1971 26 Jan 1972] 13127/72 Heading C1A [Also in Division C7] Certain cuprous salt solutions arc stabilized in aqueous acid solutions by organic nitriles. These solutions contain at least 15% by volume of water, at least 4% of an organic nitrile, preferably acetonitrile. acrylonitrile, propionitrile, 2-hydroxycyanoethane or mixtures thereof, sulphuric, sulphurous or nitric acid and the corresponding copper salt. These solutions have particular utility in the purification or extraction of copper from copper-bearing materials (see Division C7). Methods of preparation. (a) Reduction of cupric salts with metallic copper in the presence of the nitrile and the acid. (b) Reduction of cupric salts with metals, e.g. Fe, Ag, Ni, Zn, Sn, Co or Cd) or with sulphur dioxide in the presence of the nitrile and the acid. (c) Oxidation of particulate copper with silver cations from a silver salt/nitrile/acid solution. (d) Dissolving cuprous oxide in acid/nitrile solutions. (e) Treating cupric oxide, carbonate or hydroxide with sulphur dioxide in nitrile/acid solutions. (f) By exchange of cupric and cuprous sulphides and differential precipitation. Thus, cuprous sulphide can be treated with cupric sulphate/nitrile/acid solution to provide cuprous sulphate solution which can be separated from precipitated cupric sulphide. However, the cupric sulphide may take part in a redox reaction under these conditions to produce sulphur and an increased concentration of cuprous ions. Overall, cuprous sulphide is therefore oxidized to cuprous sulphate and sulphur in the presence of the nitrile and the acid. (g) In a variation of method (a) less than stoichiometric amounts of cupric salt are used, but an excess of oxygen is maintained in the solution. The net result is effectively the reaction of copper with the acid in the presence of oxygen, the cupric salt acting as a catalyst. Uses. 1. Copper values can be leached as cuprous salt solutions from copper sulphide-bearing materials possibly using oxidizing conditions with less than stoichiometric amounts of cupric salt, as in (g) above. 2. Solutions containing both cuprous and stannous salts can be treated with cupric sulphate/acid/nitrile solution to produce insoluble stannic salts which are separated as solids from the solution.
Patent GB-132075-A (GB)
IPC: B01D11/02
Abstract: 132,075. Kestner, P. Sept. 21, 1918. Extracting sugar. -- Apparatus for making extracts from beetroot comprises a series of buckets 1 having perforated bottoms and carried by trunnions on endless chains 2 so that material fed from a hopper 10 to the lowermost bucket 1<a> of the ascending column is traversed by water or other solvent supplied from a tank 14 to the uppermost of the ascending series. The trunnions are fitted with toothed wheels 4 engaging racks 9, 12 so that each bucket on reaching the hopper 10 is tilted to receive the charge and on reaching the top of the apparatus is reversed to discharge the spent material into a hopper 13. The extract after passing the ascending buckets in turn is received in a vat 16 and drippings from the descending buckets are collected in a tank 17. A casing 18 may surround the ascending column of buckets and may have steam or hot air injected into it to maintain the heat of the contents of the buckets. In a modification the feed hopper 10 is located at the top of the descending column of buckets so that the two series are more nearly balanced.
Patent GB-1249688-A (GB)
Title: High current electrical switch
IPC: H01R4/00
Filed: 1969-03-13
Abstract: 1,249,688. Heavy current switches; contactmembers for switches. BURNDY CORP. 13 March, 1969 [18 March, 1968], No. 13210/69. Heading H1N. A heavy current switch for shorting electrolytic cells has movable main contacts 18 mounted on a flexible conductive cantilever arm 14 and an arcing contact 24 mounted on an extension arm 22 carried by arm 14, the switch being operated by a lever assembly 32 acting on the free end 16 of arm 14 through springs 68 and on the extension arm 22 through spring 64 so that the arcing contacts 24, 26, engage before the main contacts 18, 20, close and separate after the main contacts open, (see also Figs. 5-7, not shown). Cantilever arm 14 comprises two oppositely bowed straps of laminated construction. A shaft 44 is rotated counter-clockwise manually to open the switch or switches, one or more lever assemblies 32 each converting the limited rotary motion of shaft 44 into limited rectilinear sliding motion of a drive rod 50 coupled via a J-bar link 48 to an eccentric arm 46 mounted on shaft 44. Rod 50 is coupled to a header member 60 by a coupling bolt 62, and the force transmitting springs 64, 68, are captured between header 60 and arms 22, 14. Stationary arcing contact 26 is screwed into its conductor plate 12 for easy replacement. Arcing contact 24 and arm 22 are replaced by disassembly of bolt 62 from rod 50. Arm 22 slides along bolt 62 to give a limited pivotal motion relative to free end 16 of arm 14 and ensure contact wiping upon switch closing. A pin 66 captured in free end 16 fits loosely within an aperture 68 of arm 22 to prevent parallel relative motion of arm 22 and free end 16.
Patent GB-217573-A (GB)
Title: Improvements in talking machine funnels
IPC: G10K13/00
Filed: 1924-05-30
Abstract: 217,573. Polyphonwerke Akt.-Ges. June 12, 1923, [Convention date]. Sound magnifying and directing appliances.- Talking-machine horns are moulded from a xylolithe composition consisting of sawdust mixed with magnesia-cement or putty. The Specification also refers to the known use of concrete, clav, porcelain and other materials for sound magnifying horns.
Patent GB-163269-A (GB)
Title: Improvements in or relating to wire drawing dies
IPC: B21C3/04
Filed: 1921-05-11
Abstract: 163,269. Western Electric Co., Ltd., (Assignees of Blount, H.). May 12, 1920, [Convention date]. Drawing - dies.- A wire-drawing die has a reducing-aperture in which there is a straight portion 9 having a length L approximately equal to the diameter d<1>. to minimize wear on the die, to reduce the pull required on the wire, and to ensure accurate drawing. In order that the pull required on the wire mav be reduced to a minimum, the mouth 7 of the die has a curved portion 12 which is tangential to both the mouth and the reducing portion, and the radius of curvature R of which is approximately equal to twice the diameter d'. The exit end is bevelled or rounded at 13 to prevent cutting or abrading of the wire in case it is necessary to pull back the wire.
Patent GB-1000838-A (GB)
Title: Improvements in and relating to rotary electromagnetic actuators
Inventor: CUCHES JOHN PETER
IPC: H01F7/14
Filed: 1962-04-06
Abstract: 1,000,838. Electromagnets. A. A. STAUBER, and E. J. PIRNER, [trading as DACO INSTRUMENT CO.]. April 6, 1962, No. 13465/62. Heading H1P. [Also in Division H2] The armature of an electromagnet rotates about the free end of one pole-piece of the electromagnet, while its outer pole-faces rotate past the inner faces of other poles of the electromagnet. In the form shown, a laminated or solid rotor 56 of rectangular shape is rebated at 59 to receive the end of the central limb of the electromagnet which has been turned down to form a cylindrical bearing 40 for the armature. The outer poles are cut away at 52, 54 to accommodate the rotor which rotates against restraining torque produced by springs 70, 72 acting on the output shaft 58. The rotor may be retained in the operated state by a magnetic stop. Various rotor profiles are described. The outer limbs of the stator may each carry an energizing coil, one having more turns than the other for selective operation.
Patent GB-922379-A (GB)
Title: Method of producing cumene hydroperoxide
IPC: C07C409/10
Filed: 1961-04-14
Abstract: In a method of oxidising in a liquid phase cumene to cumene hydroperoxide, the sodium salt of the cumene hydroperoxide is used as an accelerator preferably in the proportion of at least 50 parts by weight of the salt to 10,000 parts by weight of cumene. The operation is preferably carried out at atmospheric or super atmospheric pressure and atmospheric air being employed at the oxidising agent and at a temperature between 70 and 120 DEG C., the atmospheric air being deprived of its carbon dioxide content.  In an example 5 kgs. of cumene and 5 grams of monosodium salt of cumene hydroperoxide are stirred in an autoclave at 95 DEG C. and air deprived of carbon dioxide and cleaned is injected up to 6 effective atmospheres until a quantity of oxygen corresponding to 200 litres is reached.  After 6 hours the reaction product is cooled and discharged and has a cumene hydroperoxide content of 25%.  Specification 895,622 is referred to.
Patent GB-135117-A (GB)
IPC: E04H12/22
Abstract: 135,117. Moreland & Son, R., and Freeman, R. April 24, 1919. Columns.-A hollow cast-metal conical base a which may be corrugated horizontally is laid with the larger end downwards on a concrete foundation and then filled with concrete through the top hole d. A column is then bolted or otherwise secured to the upper flange b which may be strengthened by ribs c.
Patent GB-493503-A (GB)
Title: Improvements in and relating to the mounting of window panes in the cabins of aircraft
IPC: B64C1/14
Filed: 1938-05-06
Abstract: 493,503. Glazing windows of aircraft cabins. JUNKERS FLUGZEUGUND-MOTORENWERKE AKT.-GES. May 6, 1938, No. 13569. Convention date, May 7, 1937. [Class 20 (iii)] Domed windows are mounted in their frames in aircraft cabins by means of thickened edges 3 formed thereon which are held in claw-like sashes 7 with resilient packing 5 interposed. The limb 7 is left open and pressed inwardly after inserting the glass. The sash may be in separate parts adapted to be bolted together on the glass and packing or the glass may be held on a flanged sash 14 by a divided ring 11 having an inserted joining member 17, Fig. 3.
Patent GB-1045882-A (GB)
Title: Rotatable knob for cameras
Inventor: WEIDENBACH WILLY
IPC: G03B17/30
Filed: 1963-04-05
Abstract: 1,045,882. Film wind for cameras. KODAK Ltd. April 5, 1963 [April 7, 1962], No. 13570/63. Heading G2A. A film winding device for a camera is operated by a knob 1 screwed to a shaft 3 which slides in a member 4 terminating in dogs 4h which engage the film spool. Member 4 is formed with a vertical keyway 4a, in which slides a protuberance 3a on shaft 3. In the inoperative position, the knob and shaft are pressed into the camera body, and rotated, so that the protuberance 3a latches into a recess at the lower end of the keyway and is so retained there. To wind on the film, the knob is turned to disengage protuberance 3a from the recess, so that the shaft and its knob are extended from the camera body, under the action of a spring 5. In this position it can be easily grasped and operated. Member 4 can slide in a bearing 6 fixed to the camera, and is positioned by a spring 7 which latches into groove 4g on member 4. To insert or remove a spool, member 4 is pulled upwardly to release spring 7 from groove 4g.
Patent GB-1088614-A (GB)
Title: Reducing agent
Inventor: WAGNER KUNO
IPC: B01J19/00
Filed: 1965-03-31
Abstract: In Example 8, beta-methylstyrene and allylbenzene are made by reducing cinnamaldehyde at 138-145 DEG  C. with Me3N/formic acid adduct, formic acid, Cu2Cl2 and Pd/C.  The allylbenzene is stated to be formed from the methylstyrene in working up the reaction mixture by boiling with powdered K2CO3.  In Example 7, deep block dyes of unknown constitution are made by reducing chloranil or 1,4 - benzoquinone with Me3N/formic acid adduct, free formic acid being continuously added.  The product from chloranil is stated to be practically Cl-free.ALSO:In Example 5, high molecular weight copolymers of trioxane with 1,3-dioxolan or oxthiolan are thermally stabilized by reduction with pyridine/formic acid.  In Example 10, a rubber-like thermoplastic material containing elementary S is obtained by reducing polybutadiene sulphone with formic acid + Me3N/formic acid adduct.  A similar reduction is carried out on polyethylene sulphone.ALSO:Adducts or salts of formic acid with tertiary amines are used to reduce inorganic compounds, not more than 20 wt. per cent of water being present, based on the compound being reduced. There may be thus obtained S from SO2 (see Example 11); NH3 or NH2OH from HNO2, its salts or esters; Ag from AgNO3; Cu via Cu+ from Cu++; and V, As, Mn, Pb, Cr, Bi and Se in lower valency states from their ions.ALSO:Adducts or salts of formic acid with tertiary amines are used to reduce organic compounds (other than a tertiary amine forming the reducing agent), not more than 20 wt. per cent of water (based on the compound to be reduced) being present.  There are thus obtained, in examples, trichloroethanol from chloral hydrate or alcoholate; methyl formate from polyoxymethylene; p-nitrobenzyl formate (hydrolysed to the alcohol with aq. K2CO3) from p-nitrobenzaldehyde; cinnamyl and dihydrocinnamyl formates from cinnamaldehyde; formanilide from nitrobenzene.  In the latter two reductions, Cu2Cl2 and Pd/C are used in addition to the formic acid adduct.ALSO:Cu2Cl2 and Pd/C are used together, in presence of Me3N/formic acid adduct and free formic acid, to effect various reduction reactions.  In Example 12, a catalyst comprising finely-divided Cu mixed with the formates of bivalent Mn, Pb and Fe, and trivalent V and Cr, is prepared by reducing with Me3N/formic acid adduct and free formic acid, a mixture of Cu2Cl2, CuSO4, MnO2, PbO2, CrO3, NH4VO3 and FeCl3.