baber/WOPTO huggingface dataset:
Patent GB-382506-A (GB)
Title: Improvements in or relating to combined photographic sound and picture records
IPC: G03C5/14
Filed: 1932-02-22
Abstract: 382,506. Combined sound record and picture films. KODAK, Ltd., Kingsway, London.-(Assignees of Capstaff, J. G. ; Kodak Park, Rochester, New York, U.S.A.) Feb. 22, 1932, No. 5256. Convention date, Feb. 24, 1931. Drawings to Specification. [Class 40 (ii).] A method of making combined sound and coloured picture records consists in forming a photographic silver sound image on a sensitive support, bleaching this image in order to convert it into a substantially colourless silver salt or silver salts, and forming the picture records by imbibition on the picture area without affecting the sound record. By the term " imbibition " is meant the production from a photographic image having colour values of a coloured image by the application to a softened gelatine layer of colouring matter so that the gelatine absorbs or imbibes the colouring matter in accordance with variations in the density of the photographic image. The sound record may be printed on a silver halide emulsion provided on one side of the film and is then developed and fixed, leaving the remaining surface of clear gelatine. The film is then bleached and colour component picture images are impressed on the clear gelatine layer by first forming colour component images on two separate films and transferring the dye images one over the other to the support by imbibition. If desired, the colour images may be produced on opposite sides of the film. In an alternative method, registering colour component picture images are printed on opposite surfaces of a double coated film, as described in Specification 13430/15, [Class 98 (ii), Photographic processes &c.], and a sound record is also printed on one surface. The film is developed and fixed and then subjected to a bleaching bath which converts the records into silver salts ; a protective varnish is applied over the sound record, and the picture records are transformed into dye images by treatment in dye baths as described in Specification 13429/15, [Class 98 (ii), Photographic processes &c.]. The bleaching bath may comprise potassium ferricyanide, potassium bromide, and potassium chromate so that the sound record image consists mainly of silver bromide. If desired, the sound record image may be converted to silver sulphide by treatment of the film with a soluble sulphide, the picture areas being protected by a varnish. The Specification as open to inspection under Sect. 91 (3) (a) also describes the sound record as consisting of ferric ferricyanide, uranyl ferrocyanide, silver iodide, a mixture of silver bromide and silver sulphide, or any metal or double metal salt. This subject-matter does not appear in the Specification as accepted.
Patent GB-397479-A (GB)
Title: Improvements in the processes for the dehydration of electrolysable salts of easily oxidisable metals
IPC: C01F5/34
Filed: 1932-02-22
Abstract: 397,479. Electrolytic dehydration of metallic chlorides. JOHNSON, MATTHEY, & CO., Ltd., 78, Hatton Garden, London.- (Assignees of Soc. de Produits Chemiques des Terres Rares ; 67, Rue de Prony, Paris.) Feb. 22, 1932, No. 5288. Convention date, Feb. 20, 1931. [Class 41.] Substantially anhydrous chlorides of magnesium, calcium and cerium or other rare earth metal are completely dehydrated by passage through the molten salt of continuous current of such strength and voltage that the water is decomposed'without substantial decomposition of the salt. The operation may be performed as a preliminary to electrolysis of the fused salt for production of the metal. The resistance of the bath in the dehydration stage may be such as to allow passage of (a) a heavy current at a low voltage, e.g. between the decomposition voltage of water and that of the salt, (b) a small current at low voltage, external heating being necessary in this case, or (c) a small current at high voltage. Any impurities such as oxides or oxychlorides formed during dehydration or pre-existing may be removed by settling and decantation as described in Specification 397,481, Group III]. This may be effected simultaneously with dehydration, the dehydrated and purified molten salt being decanted directly to a second cell for the production of metal.
Patent GB-1496013-A (GB)
Title: Selectively hydrogenated block copolymer composition suitable for use in tubing or elastomeric rods
IPC: B29D23/00
Filed: 1975-02-10
Abstract: 1496013 Selectively hydrogenated block copolymer blends SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ BV 10 Feb 1975 [11 Feb 1974] 5481/75 Heading C3P A composition comprises (a) a selectively hydrogenated block copolymer comprising at least two polymer blocks A derived from a mono-alkenyl aromatic hydrocarbon and at least one block B derived from a conjugated diene, polymer blocks A being no more than 20% hydrogenated and the block(s) B being at least 80% hydrogenated, the polymer blocks A constituting 31 to 35% of the total block copolymer and each block having a molecular weight of from 20 to 35 Î 10<SP>3</SP>, (b) a second selectively hydrogenated block copolymer as defined above that wherein the blocks A constitute 26 to 31% of the block copolymer and having a molecular weight of from 8 to 15 x 10<SP>3</SP>, (c) a polypropylene, (d) a mineral oil, and optionally (e) a flow promoting resin, e.g. a vinyl toluene/alpha methylstyrene copolymer or an ethylene-vinylacetate copolymer. The composition may be used for the manufacture of tubing or elastomeric rods. Examples refer to compositions of (a) polystyrene (25,000)- completely hydrogenated polybutadiene (100,000)-polystyrene (25,000), (b) as (a) but molecular weights of 10,000-50,000-10,000, (c) polypropylene, (d) white oil, and in one case (e) an alpha methyl styrene-vinyl toluene copolymer.
Patent GB-870380-A (GB)
Title: Improvements in solvents for the separation of diolefines from mixtures of hydrocarbons
IPC: C07C7/10
Filed: 1958-02-20
Abstract: Diolefines are separated from hydrocarbon mixtures containing them by the use as a selective solvent for the diolefine of a saturated heterocyclic compound containing a carbonyl group other than a sulpholane.  Suitable solvents are the lactams with 5 and 6 membered rings such as pyrrolidone and piperidone and their C1-C8 N-alkyl derivatives and caprilactam; lactones such as gamma-butyrolactone and delta-valerolactone or their carbon-substituted derivatives; or cycloimines such as formylpyrrolidone.  Water may be added to the solvent in amounts of 1-15% by weight of the organic solvent.  They are particularly useful for C4-C6 diolefines from mixtures with olefines and/or paraffins.  Acetylenes are more soluble and stay in solution when the diolefine is stripped out.  In one embodiment for separating butadiene from mixtures also containing butanes and butenes, the mixture is passed in the gaseous phase countercurrent to solvent in a packed tower and the resultant solution containing some butenes is contacted in a second tower with a stream of pure butadiene obtained from the product stream. The overhead from this tower is recycled to the first while the bottoms being a solution of pure butadiene in the solvent is stripped by heating or treatment with steam.  In an alternative the first and second columns are combined, the solvent entering at the top, the hydrocarbon feed in the middle, and the pure butadiene at the bottom.  Separations are performed at temperatures above the boiling point of the hydrocarbons to 200 DEG C., preferably just above the hydrocarbon boiling point. Pressures of 1-10 atmospheres can be used.
Patent GB-816410-A (GB)
Title: Improvements in or relating to the manufacture of hat blocks
IPC: A42C1/02
Filed: 1957-02-19
Abstract: 816,410. Moulding hat blocks. MOORES & SONS Ltd., J., and POLLITT, P. S. Feb. 19, 1957, No. 5522/57. Class 87(2). [Also in Group VII] A hat block 18 is made of fibre glass with a resin binder in a mould 10 formed with an edge flange 12 on which is located a washer-like disc 13 having an upwardly directed lip 14, a second disc 15 formed with radial grooves 16 being placed on the first disc and a bag 17 located in the mould is expanded by steam or hot water. During moulding air and surplus resin escape along the radial grooves 16. The moulded block 18 is formed with an inwardly directed flange 18a and an externally projecting flange 18b which latter flange is removed to leave the block in its finished state. An aluminium core can be located in the space defined by the flange 18a and the block formed with perforations if it is to be used in a blocking process using steam.
Patent GB-212094-A (GB)
Title: Improvements in mop heads
IPC: A47L13/256
Filed: 1923-02-26
Abstract: 212,094. Attwell, R. Feb. 26, 1923. Holders with clamaping- devices for mops.- A cross-bar 4, Fig. 3, is slidably and adjustably mounted in a rigid frame 1 of rectangular form so that cleaning cloths may be gripped between the bar and the inner front face of the frame. A forked arm 5 projects rearwardly from the bar and embraces the stem of a thumb-screw 9 adapted to screw into a lug 8 on the, frame 1. In the construction shown in Fig. 5 the cross-bar 4 is attached to links 12, 14 connected by hinge pins 19 to links 11, 13. The hinge pins are provided with bosses internally threaded to receive the end of a right and left hand screw-threaded rod 24 provided with a knurled centre portion 25, by which the bar 4 may be moved towards or away from the front of the frame 1. According to the Provisional Specification the lug 8, Fig. 3, may be bifurcated instead of the arm 5 and the screw 9 provided on the arm 5 or on the cross-bar itself.
Patent GB-109020-A (GB)
Title: Improvements in or relating to Woven Cartridge Carriers and the Weaving thereof.
IPC: F42B39/08
Filed: 1917-04-20
Abstract: 109,020. Mills Equipment Co., (Randall, C. F.). April 20, 1917. Cartridge belts.-Consists in forming cartridge belts for machine guns from an integral two-ply fabric with a series of transverse openings across it between the plies to receive the cartridges and a series of longitudinal thin places, formed in the weaving, along which the fabric is cut to produce a series of separate belts. The thin places are formed by omitting a small number of warp threads and the unravelling of the marginal warp threads of each belt is prevented, for example, by threads E, Fig. 4, which are caused to cross over the two marginal warps F, F<1> and engage the wefts G as shown. The openings C, Fig. 1, between the plies A, B, are preferably shaped with shoulders C<1>, if the cartridges are of the usual form shown, by suitably interweaving the two plies, and the openings extend right across the belts when intended for machine guns, or may be closed at one end in other cases. The belts may be separated by cutting the wefts connecting them either in the loom or after the removal of the fabric therefrom.
Patent GB-1325768-A (GB)
Title: Process for forming tubular thermoplastic film
IPC: B29C48/90
Filed: 1970-08-26
Abstract: 1325768 Tubular films ESSO RESEARCH & ENG CO 26 Aug 1970 [27 Aug 1969] 5587/73 Divided out of 1325766 Heading B5B A process for the formation of tubular thermoplastic films using the cooling cell claimed in the parent Specification comprises extruding a molten resin downwardly from an annular orifice 14 of a die 13 to form a tubular film; passing the film around a cylindrical cooling mandrel 17 positioned in a cell 16 containing a cooling liquid; directing gas upwardly through an inside portion of the downwardly moving film, thereby partially cooling the film prior to contact with the mandrel and simultaneously expanding it to a diameter slightly larger than the mandrel and preventing the condensation of thermoplastic resin decomposition products on the mandrel; sliding the inside surface of the film downwardly over the cooling mandrel whereby the inside surface of the film is maintained in contact with at least a portion of the mandrel by pressure exerted from the liquid in the cooling cell 16; passing cooling liquid in the cooling cell in turbulent flow in a direction countercurrent to the direction of movement of the film in contact with the outer surface of the film; and thereafter recovering the cooled tubular film 15. Preferably the cooling liquid is maintained in an annular area surrounding the outer surface of the mandrel and the film passes through a static zone of cooling liquid and a quiescent zone prior to passing through the turbulent zone and exiting from the cooling cell 16. The mandrel 17 is preferably internally water cooled and maintained at a temperature of 2-75 C. The melt extrusion of polyethylene and polypropylene films is described.
Patent GB-1262924-A (GB)
Title: Machine for rolling bevel gear teeth
Inventor: YAKIMANSKY VASILY VLADIMIROVIC
IPC: B21H5/04
Filed: 1969-02-03
Abstract: 1,262,924. Rolling gears. NAUCHNOISSLEDOVATELSKY INSTITUT TEKHNOLOGII AVTOMOBILNOI PROMYSHLENNOSTI. 3 Feb., 1969, No. 5684/69. Heading B3M. A machine for rolling bevel gear teeth includes a driving spindle 3, rotatably mounted in a frame 1 for rotating a gear blank 4, Fig. 4, and a tool-carrying spindle 11 mounted in a sub-frame 10 pivoted at 13 to the frame 1. A rolling tool 12 is carried by the spindle and is driven by replaceable synchronizing gears 8 and 15 associated with the spindles. An hydraulic cylinder 20 controls axial movement of the tool 12. The pivotal connection of the sub-frame 10 to the frame permits blanks of different pitch angle to be rolled, appropriate synchronizing gears 8 and 15 being used for each value of pitch angle. A traversible induction heater 16 heats a blank before the rolling begins, and an unloading device 23 removes the blank after rolling.
Patent GB-1500364-A (GB)
Title: Dc static switch circuit with transistor surge current pass capability
IPC: G05F3/22
Filed: 1975-02-11
Abstract: 1500364 Semi-conductor switch WESTING- HOUSE ELECTRIC CORP 11 Feb 1975 [21 Feb 1974] 5727/75 Heading H3T Static switch apparatus to control the application of D.C. power from a direct voltage source to a load comprises a first transistor Q 1  of a first polarity, preferably PNP, with emitter and collector connected respectively to first and second terminals 10, 12 for connection to the source of power (not shown) and load; a second transistor Q 2  of the other polarity, NPN with its collector and emitter connected respectively to the base of the first and to the second terminal 12, and third transistor Q 3  of the same polarity as the first, PNP, with its emitter and collector connected respectively to the collector and base of the second and with the third transistor base having means for applying input signals. This means may as shown be a fourth transistor Q 4  of the same polarity as the second. A resistor (R5, not shown) may be connected between the collector of Q 4  and the base of Q 1 , this will reduce the surge capability of the circuit. In normal use with load currents typically up to I amp Q 1  is conducting and saturated so that its collector is slightly positive with respect to its base. Both junctions of Q 3  are forward biased and it acts as a double diode while Q 2  is held off. Base bias current for Q 1  passes through Q 3 , R, and Q 4  and is determined solely by R 1 , being set so that Q, is saturated. Excessive load current, as during motor starting, brings Q 1  out of saturation, Q 2  now conducts and Q 3  acts as a transistor both providing more base current to Q 1 . The gain of the circuit is such that the collector-emitter voltage of Q 1  in overload is fixed at a level, such as 2 volts, over a range of load currents up to 1600 times the normal. Practical circuits were found to be held with this level for currents up to 40 times normal. The characteristic of the circuit voltage drop as a function of load current is shown in Fig. 2.
Patent GB-106094-A (GB)
Title: Method of and Apparatus for Centering Shells.
IPC: G01B13/19
Filed: 1917-04-24
Abstract: 106,094. Soc. des Automobiles Alda. May 3, 1916, [Convention date]. Drilling-machines; turning. - Shells of which the base has been accurately centred in a drilling-machine upon a conical mandrel prior to bottling, are supported, after bottling, at this end on the headstock centre and at the nose in a revolving centre rest fitted with a nut k to apply end thrust and with four adjusting screws d. The nose is closed by a rubber covered stopper e receiving the tube f with a rubber ball n at one end and a metal ball in a stuffing-box at the other. The tube communicates with a filling aperture h and an inclined gauze tube i. The shell is about half filled with coloured water and the screws d are adjusted until, on rotating the shell, no change of level takes place. The stopper &c. are then removed and the nose is bored and countersunk by a cutter m held in the tailstock. In a simpler form, the nose is closed by a hollow stopper fitted with a glass plate and the level is checked by comparison with a fixed pointer. In a further modification the operation can be performed in the appliance shown in Fig. 4 which is provided with a centre for the base of the shell and with a collar o to carry the centring screws 4 for the nose. After the shell has been centred as described above the device with the shell in place is placed on the table of a drilling-machine with the end r resting on the table and the nose bored out by the tool described above.
Patent GB-372444-A (GB)
Title: Improvements in apparatus for cleaning co-acting rollers used for grinding purposes
IPC: B02C4/40
Filed: 1931-02-24
Abstract: 372,444. Roller mills. MITCHELL, J. W., 2, Denham Street, Rhodes, and MITCHELL, J. N., Treleigh, Jersey Road, Strathfield, both near Sydney, Australia. Feb. 24, 1931, No. 5766. [Class 59.] A scraper device for cleaning the rolls of a roller mill comprises a trough carrier 11 of resilient material adapted to receive a supply of cleaning material of the nature of that which is being ground, the carrier being adjustable in relation to the rolls so that the cleaning material is in contact therewith. The scraper consists of a vee-shaped stock 1 slidably mounted in brackets 3, a trough 11 of felt &c. being secured in the stock by a wedge 12 and liner 13. Powdered material from the roll collects in the felt trough 1À1 and acts as a wiper for the roll 16.
Patent GB-566147-A (GB)
Title: Improvements in synchronous electric motors
IPC: H02K19/10
Filed: 1943-04-10
Abstract: 566,147. Dynamo-electric machines. MAcFARLANE, J. C., and MAcFARLANE, W. April 10, 1943, No. 5787. [Class 35] A rotor for a synchronous motor of the reluctance type is built up of parts 3, Fig. 1, presenting a low reluctance path for the main flux 6 and having faces 4 which form the cylindrical exterior of the rotor, the parts being separated by gaps 5 so to increase the reluctance of the rotor to the cross-flux 7 and being clamped between end plates by bolts 8 extending from end to end of the rotor. The bolts may, as shown, be located in the gaps and form in conjunction with the end plates a squirrel cage starting winding. Alternatively, the bolts may be of magnetic material and pass through the parts 3 adjacent their faces, in which case a starting winding or a D.C. exciting winding to improve the hold-in torque may be wound in the gaps. The rotor shaft may be formed in two sections, one section being carried by each end plate, or, as shown in Fig. 3, which illustrates the shapes of the different parts 20, 21 of a four-pole rotor, the shaft 26 may pass through the rotor, provided the parts adjacent it are so shaped as to leave a space 23 around the shaft. When starting under load is required, a separate squirrel cage starting motor may be provided, or the rotor may be divided midway of its length so that one section thereof may temporarily be displaced through 90 electrical degrees to increase the cross-flux permeance for induction starting. Alternatively, the motor may be supplied from a variable frequency supply, the frequency of which, during starting, is gradually increased from zero to the normal working frequency. According to the Provisional Specification, a rotor connected to an A.C. supply may be surrounded by a stator formed of parts so shaped and arranged as to increase its reluctance to cross-flux.
Patent GB-989468-A (GB)
Title: Improved process for purifying sugar juices
IPC: C13B20/06
Filed: 1962-02-15
Abstract: Purification of sugar beet juice by aqueous calcium hydroxide and carbon dioxide involves adding lime to the crude juice in a predefecator, adding more lime, saturating with carbon dioxide, and, in a hydrocyclone, separating the saturated mixture into a fine and a coarse component, the fine component being returned to the predefecator and the coarse component being passed to a filter. Predefecating in the presence of a quantity of carbon dioxide less than that required for saturation improves results from the hydrocyclone treatment. Specification 888,241 is referred to.
Patent GB-1101863-A (GB)
Title: Improvements in or relating to ion exchange reactions
IPC: B01D15/04
Filed: 1965-02-10
Abstract: In order to prevent undue dilution and mixing of treatment solutions an ion exchange process comprises treating the exchanging with fractions of a solution of first ions beginning at zero concentration and rising to one at which the desired reaction is to take place; treating this exchanger with successive fractions of a second solution containing first and second ions with fractions having decreasing first ion concentration and increasing second ion concentration and total concentration of the ions in each fraction being constantly equal to the concentration at which the desired exchange is to take place; treating the exchanger with a third solution containing second ions in a concentration substantially equal to the total concentration at which exchange is to take place; treating with a fourth solution in successive fractions with second ions being in desired ion exchange concentration dropping to zero; treating with water and collecting the fractions to give a solution containing first ions.  The exchanger apparatus has a baffle plate and distributor above the exchanger and a tortuous path through the holes in each so that with walls on the baffle plates cells are formed on the baffle plate to give uniform coverage of the surface of the exchanger by the liquid to be treated.