baber/WOPTO huggingface dataset:
Patent GB-1475948-A (GB)
Title: Apparatus for stretching a continuous length of material
IPC: B29C55/00
Filed: 1975-05-23
Abstract: 1475948 Stretching vinyl sheet FORD MOTOR CO Ltd 23 May 1975 [5 Aug 1974] 22625/75 Heading B5A Vinyl sheet, such as plasticized polyvinylbutyral to be used as the interlayer in laminated automobile windscreens, is stretched by apparatus which comprises: feeding means (viz. hollow drum 16) for feeding a continuous web 12 of sheet from a supply thereof (not shown); heating means associated with said feeding means (viz. pipe 34 and a corresponding pipe (36, Fig. 1, not shown) at the other end of drum 16 to allow the passage of steam therethrough) for heating the web to a temperature at which it is pliable, the heating and feeding means being stationarily mounted; a movable platform 38 adjacent the feeding and heating means; a controllable device (viz. hydraulic cylinder 50) for moving said movable platform in a direction perpendicular to the path of the web being fed from the feeding means; at least one frusto-conical member (in the illustrated embodiment, two members 58, 60) for stretching said web and simultaneously cooling it, the cooling cone(s) having a short height greater than the width of the web and being rotatably mounted on the movable platform 38; an edge position sensing means 70 secured to said platform for sensing the location of one edge of the web relative to the cooling cone(s) and developing a signal indicative of said location; and means responsive to said signal for coperating the controllable device to adjust the position of said movable platform to maintain the web and the cooling cone(s) in a desired relative position.
Patent GB-258586-A (GB)
Title: Improvements in or relating to induction motors in cascade sets
IPC: H02K17/38
Filed: 1926-09-14
Abstract: 258,586. Siemens - Schuckertwerke Ges. Sept. 15, 1925, [Convention date]. Alternating-current induction machines, - In an arrangement comprising an induction motor and a commutator machine cascaded for speed control of the motor, a separate synchronous exciter is used for the commutator machine, the field current of the exciter being dependent upon a voltage which varies with the speed of the main motor. In the arrangement shown in Fig. 1, in which an induction motor 4 is cascaded with a commutator machine 5 excited by a synchronous machine 6 driven by a synchronous motor 7, the exciter 6 is energized by the difference between the volts of a continuous-current supply 8 and a continuous-current machine 9 mounted on the shaft of the motor 4. At a predetermined speed of the motor 4 the volts of the supply 8 and machine 9 neutralize and the exciter 6 is idle. By controlling the exciting resistance 10 of the machine 9 or the main resistance 11, the no-load or load speed of the main motor 4 may be regulated or this machine 4 may be caused to give constant output as a motor or to function as a generator. In the form shown in Fig. 2, the exciter 6 of the cascaded commutator machine 5 is driven by a synchronous machine 7. as in Fig. 1, and is excited by the difference of the voltages of two machines 9, 12 mounted respectively on the shafts of the main motor 4 and the exciter 6. When the speeds of the main and synchronous motors 4, are equal, the voltages at 9, 12 balance each other. The voltage supplied to the rings of the machine 5 by the machine 6 is in the same or opposite direction to that of the rotor voltage of the main motor, depending upon whether the set runs below or above synchronism. Means may be provided for giving an increased excitation to the machine 6 in case of sudden loads by means of relays or regulators which short-circuit resistances in the exciter circuits, or by increasing the volts of the machine 9. An arrangement for so increasing the volts is shown in Fig. 8 in which 13 indicates the main motor and 16 a machine corresponding to the machine 9 in Fig. 2. A transformer in series with the main motor feeds a regulator 14 which controls a rheostat in limiting load conditions. A second rheostat 17 enables the no-load speed of the set to be adjusted. The Specification describes, with the aid of volt-speed diagrams, the speed characteristics obtainable. The Specification, as open to inspection under Sect. 91 (3) (a), states also that the invention is applicable to continuous-current plant. This subject-matter does not appear in the Specification as accepted.
Patent GB-619065-A (GB)
Title: Improvements in or relating to a method of stabilising an aqueous solution of ascorbic acid (vitamin c)
IPC: A61K31/375
Filed: 1946-07-31
Abstract: Aqueous solutions of ascorbic acid are stabilized for storage and distribution by addition of glycerol in quantity not less than 50 per cent of the total volume; an alcohol may also be present up to 25 per cent.  The process is preferably carried out in an inert atmosphere such as nitrogen or carbon dioxide.  The examples show the proportions used of (1) ascorbic acid, glycerol and water; and (2) ascorbic acid, glycerol, ethanol and water.ALSO:A therapeutic remedy for incorporation in food or medicine comprises ascorbic acid in aqueous solution stabilized for storage or distribution by the addition of glycerol to the extent of not less than 50 per cent of the total volume.  An alcohol may also be present up to 25 per cent. The examples show the proportions used of 1 ascorbic acid, glycerol and water; 2 ascorbic acid glycerol, ethanol and water.
Patent GB-875413-A (GB)
Title: Improvements in or relating to couplings
IPC: F16D3/76
Filed: 1959-07-03
Abstract: 875,413. Universal joints. GELENKWELLENBAU G.m.b.H. July 3, 1959 [Dec. 30, 1958], No. 22964/59. Class 80 (2). Centring means for a universal joint wherein a rubber element 3 is bonded between sleeves 1, 4, the latter of which is connected to a propeller shaft 5, comprises rings 6, 7 fast with the sleeve 1 and shaft 5, respectively, at least one, 6, of which rings has a part-spherical surface. One of the rings 7 may be made of plastic, preferably a polyamide. As shown, the centre of curvature 8 of ring 6 is adjacent to the centre of gravity 9 of the rubber element 3 when the angularity of the joint is zero, and these two points coincide when the deflection of the joint is about 2 degrees. In Fig. 2 (not shown), both rings have part-spherical surfaces, the centre of curvature of which lies in the plane of the rings. In Fig. 3 (not shown), the rubber element is pre-compressed and the centre of curvature of the part-spherical ring coincides with the centre of gravity of the rubber element when the angularity of the joint is zero.
Patent GB-240634-A (GB)
Title: Improvements in hoods and side screens for use on motor vehicles
IPC: B60J7/12
Filed: 1924-09-30
Abstract: 240,634. Humber, Ltd., and Cole, J. A. Sept. 30, 1924. Hoods.-The rear quarter 2 of a hood is provided with a flap 5 projecting inwards and being secured at 6 to, or bearing against, the inside of the adjacent side screen 7 to exclude weather and draughts. The flap may be flexible or of rigid material in which case it is hinged to the rear quarter.
Patent GB-726190-A (GB)
Title: Improvements in holders for plant propagation by layering
IPC: A01G9/12
Filed: 1952-09-15
Abstract: 726,190. Plant-layering. CRAWLBY, J. Sept. 15, 1953 [Sept. 15, 1952], No. 23153/52. Class 6 (2). A device for holding a plant-stem during layering comprises a bent-wire element having a hooked portion 3, 4 at a point between a longer lower portion 1, for insertion into the ground, and a short upper portion 2 for manipulation and extraction from the ground, the hooked portion being formed by bending the wire in approximately a semi circle 3 and then bending it back re-entrantly, the re-entrant portion 4 being pressed closely against the adjacent part to leave no space which could be entwined with roots. The wire is of elliptic cross-section bent parallel to its major axis and includes a finger loop 5 at its upper end.
Patent GB-1485532-A (GB)
Title: Unloader devices for hydraulic pumps
IPC: F04B49/22
Filed: 1976-06-04
Abstract: 1485532 Reciprocating pumps CLAYTON DEWANDRE CO Ltd 4 June 1976 [13 June 1975] 23166/76 Heading F1A [Also in Division F2] An unloader valve for closing the inlet of a pump when its delivery pressure exceeds a predetermined level, e.g. for duplex pumps supplying the circuits of a split, full-power hydraulic braking system, comprises a lift valve-member 9 engageable with a seat 10 to control flow from an inlet 4 via a filter 5, port 6, chamber 11 and passage 12 to pump 3, valve-member 9 being moved to its closed position by the pump delivery pressure acting on a plunger 8 against an adjustable spring 13, a ball-valve 15 closing delivery pressure port 2 until the delivery pressure exceeds said level. Valve 15 also may engage a seating when in its open position to prevent leakage past plunger 8. In another embodiment, Fig. 2 (not shown), valve 15 is omitted and valve-member 9 engages a seat (16) when in its open position to prevent leakage past the plunger.
Patent GB-841796-A (GB)
Title: Self-supporting sky-light element for buildings
IPC: E04D3/28
Filed: 1958-07-21
Abstract: 841,796. Transparent roofing elements. GRIDAINE, M. July 21, 1958 [July 23, 1957], No. 23271/58. Classes 20(3) and 87(1) [Also in Group XXIII] A glass or transparent plastic roofing or skylight element of corrugated form with ribs 2 separated by troughs 1 is of arcuate longitudinal section. Overlapping end ribs 2n, 21n are secured by screws 6 to wedge members 4 mounted on supports 3. The screws 6 may extend into the support 3 and washers 7 may be provided.
Patent GB-1392918-A (GB)
Title: Seismic pneumatic energy source with bubble eliminator and  signal oscillation attenuator
IPC: G01V1/135
Filed: 1973-05-17
Abstract: 1392918 Seismic energy generators M BURNSIDE (Texaco Development Corp) 17 May 1973 23505/73 Heading H4D A marine seismic source includes a flexiblewalled annular first chamber for receiving an expanding mass of gas to generate a desired initial pulse and a second chamber for receiving gas from the first chamber to suppress subsequent pulsations. Figs. 3 and 4, show a source before and after firing, respectively. In this embodiment the expanding gas is from an air gun 10c (but explosive or spark pulse generators could be used), and passes via ducts 14b into the first chamber, defined by annular region 15a between flexible wall 16a and the rigid wall of the cylindrical second chamber, 17d. Collapse of the first chamber under hydrostatic forces following the initial pulse causes the gas to be forced through apertures 18b into the second chamber which is permanently vented to atmosphere (or to a vacuum system), at 20b. Release of gas into the water, and consequent bubble pulsations, are thus avoided. A modified shape for the chambers is described (Figs. 1 and 2, not shown).
Patent GB-735761-A (GB)
Title: A hand operated rotary printer
IPC: B41K1/22
Filed: 1952-09-19
Abstract: 735,761. Printing-machines; printing-surfaces. KINGS, A. T. Sept. 21, 1953 [Sept. 19, 1952], No. 23609/52. Class 100 (2). A hand-operated rotary printer comprising a printing-drum 1 revolvable in a supporting handle 10, 11 and adapted to be rolled over the surface to be printed, has means for returning the drum to a starting position after printing, and a type carrier, in the form of a sheet 21 of paper or other flexible material to which type 5 has been adhesively secured, held on the drum in determined position thereon. The drum, handle and spring means for returning the drum to a starting position, are substantially as described in Specification 241,595, [Class 100 (ii)]. The type carrier 21 may comprise a gummed sheet of paper, and the type 5 may be of rubber. The drum 1 has a felt or other resilient layer 3, and a metal plate 22 with a projecting tongue 24 and a lip 27 formed with tongues 26. The carrier 21 is folded at 23 to engage the tongue 24, and is eyeletted at 25 to engage the tongues 26.
Patent GB-279047-A (GB)
Title: Supports made of cellulose derivatives for use in the manufacture of sheets of material soluble in organic solvents
IPC: B29C41/24
Filed: 1927-09-08
Abstract: 279,047. I. G. Farbenindnstrie Akt.- Ges. Oct. 16, 1926, [Convention date]. Apparatus for making films.-The surface of the support consisting of a cellulose derivative, used as a base for the manufacture of films, is subjected to a treatment such as saponification, denitration &c., so that the support neither swells nor dissolves in the solvent which is used for making the film-dope. In the case of a nitrocellulose support treatment with a solution of sodium hydrosulphide or ammonium sulphide may be employed. The treatment is such that the cellulose ester or ether is converted superficially into regenerated cellulose.
Patent GB-598110-A (GB)
Title: Speed governors
IPC: B64C11/30
Filed: 1944-11-29
Abstract: 598,110. Speed governors. AVIATION CORPORATION. Nov. 29, 1944, No. 23850. Convention date, Dec. 17, 1943. [Class 57] [Also in Group XXXV] In an arrangement for main. taining a predetermined speed of an engine driving a variable-pitch screw propeller, the drive from the engine is transmitted through shaft 13, gearing 26, slipping clutch 37, planet gears 43 to a sun-wheel 44 mounted on a control shaft 17 and driving a member 14 that carries magnets 33. A member 15 is secured to, and rotates with, the planet gears 43 and within the member 15 an inertia member 16 is mounted on the shaft 17 and has metal inserts 54 on its inner face so that a magnetic drive is formed between members 14 and 16. An electric motor 78 is driven at the speed at which it is desired to control the engine and drives a pinion 88 and planet gears 89, the spindles of which engage and drive a member 76, the arms of which extend through slots in the member 15 and have projections 104 that engage in cam slots 105 in the member 16. When the engine is running at the predetermined speed, the members 16 and 76 rotate at the same speed, but when the engine speed varies slowly, the projection 104 moves in the cam slot 105 and the member 76 moves the shaft 17 axially and through the bar 122 actuates one of the switches 113, 114 to start an electric motor to adjust the pitch of the propeller. The inertia member 16 has a second cam slot 108 that is engaged by a pin 107 attached to the member 15 and on sudden changes in engine speed, the inertia member 16 lags or over-runs the member 15, when the inertia member moves axially and adjusts the member 76 and shaft 17. This movement is greater than that which takes place on slow changes in speed and the bar 122 actuates switches 115 or 116 that control a motor to'cause the adjustment of the pitch of the propeller to take place at a greater speed. The movement of the inertia mass 16 relatively to the member 15 takes' place against spring pressure and the effect of these springs and the effect of the shape of the cam slots 105, 108 causes the bar 122 to resume a neutral position before the speed of the engine returns to its predetermined value after an abrupt change; The pitch of the propeller is changed by electric motors arranged in circuit with switches 113 ... 115 (see Group XXXV).
Patent GB-258909-A (GB)
Title: Improvements in and relating to regulating systems for dynamoelectric machines
IPC: H02K19/30
Filed: 1926-09-28
Abstract: 258,909. British Thomson-Houston Co., Ltd., (Assignees of Karapetoff, V.). Sept. 28, 1925, (Convention date]. Exciting; field magnets, dampers on poles of.- An alternating-current dynamo-electric machine has a main field winding and an auxiliary field winding producing a field to neutralize the direct or the transverse armature reaction, the excitation of the auxiliary winding being derived through a rectifier from a device comprising a winding connected to the alternating current machine so as to set up a rotating magnetomotive force proportional to the main current, and a rotor of magnetic material with polar projections associated with the winding and rotated in synchronism with the alternating-current machine. The salient-pole rotor 2 of a synchronous machine, Fig. 2, is provided with a main field winding 3, a winding 4 coaxial with the main winding and arranged to compensate the back armature reaction, and a third winding 5 displaced by 90 electrical degrees with respect to the windings 3, 4 and arranged to compensate the cross armature reaction. An amortisseur winding may be located in holes 6 or in alternate slots in the pole faces. Fig. 1 shows a threephase alternator in which the main field winding 3 is supplied through slip-rings 9, 12 from a shuntwound exciter 18. A vibratory regulator 22 having a continuous-current coil 24 and an alternating-current coil 23 controls a resistance 20 in the exciter field circuit. Continuous current for the coils 4, 5 is obtained from a series transformer 53 through rectifiers 26, 33 which may be of the mercury-vapour type, and devices 40, 43, referred to as inductance modifiers, are connected in each circuit. Each inductance modifier comprises an unwound magnetic rotor 41 (or 44) formed with polar projections, and a stator 42<1> (or 45<1>) provided with windings 42 (or 45) arranged to produce a rotating field in the usual manner. The inductance modifier acts in such a way that if the crest of the M.M.F wave coincides with a rotor pole, the flux of the device is a maximum and the voltage at the terminals of its stator winding is also a maximum. The rotors 41, 44 are mounted on the shaft 13 of the alternator if the number of poles is equal to the number of alternator poles, and the rotors are displaced by an angle of 90 electrical degrees. The terminals 27, 34 of the rectifiers and the star-point 49 of the windings 42, 45 are connected through sliprings 10, 11, 12 to the field windings 4, 5. The action of the inductance modifiers is such that with a purely inductive load, field winding 4 receive, its maximum excitation whereas with a non-inductive load, field winding 5 receives maximum excitation. The compensating coils 4, 5 may be designed to over-compound the machine and the angle between the rotors 41, 44 may be adjusted if a modified excitation of these two windings is desired.
Patent GB-1342388-A (GB)
Title: Sintering alloys
IPC: C22C33/02
Filed: 1971-04-19
Abstract: 1342388 Sintering alloy powders SINTERMETALLWERK KREBSOGE GmbH 19 April 1971 [10 April 1970] 23939/71 Heading C7A A sintering alloy powder containing in wt per cent:- 2-9% Cr 0À5-5À0% Mn 0-0À7% C balance Fe plus impurities, is made by a process comprising annealing an Fe/Cr alloy powder having a particle size less than 200 Ám for at least 2 hours at between 850‹ and 950‹ C with the exclusion of air, the Cr content of the annealed powder is then reduced by adding Fe and Mn powder each having a particle size less than 200 Ám, and the powders well mixed.
Patent GB-1427341-A (GB)
Title: Liquid soap product
IPC: C11D9/26
Filed: 1972-05-22
Abstract: 1427341 Liquid soap composition UNILEVER Ltd 21 May 1973 [22 May 1972] 23977/72 Heading C5D A creamy liquid soap composition comprises essentially a fine suspension of potassium stearate/palmitate crystallites in an aqueous glycerine solution, wherein the ratio by wt. of glycerol to water is from 3 : 7 to 5 : 5. The composition comprises 12 to 40% of the potassium soaps of saturated fatty acids having predominantly 12, 16 and 18 carbon atoms in the molecule, 20-40% of glycerol and 20-55% of water. Preferably the compositions contain 7-20% of potassium laurate and 5-20% of potassium C 16 -C 18  saturated fatty acid soaps. Up to 10% of free fatty acids may be present, The viscosity may be increased by the addition of a thickening agent including a sodium soap. The composition is prepared by mixing glycerol and water, heating the mixture to 65-85‹ C., adding potassium hydroxide and, if desired, sodium hydroxide and, while stirring and heating to form a clear solution, subsequently adding the fatty acids in two steps, firstly, the C 12  fatty acids and then the C 16 -C 18  fatty acids, after which the mass is cooled carefully at a temperature drop of not more than 10‹ C. per hour. Specification 887,247 is referred to.
Patent GB-501749-A (GB)
Title: Composite wrapping material and method of making same
IPC: C09J131/04
Filed: 1937-09-02
Abstract: 501,749. Metal foil. BRITISH WAXED WRAPPINGS, Ltd., and BROWNE, R. J. Sept. 2, 1937, No. 24034. [Class 83 (ii)] [Also in Group VIII] Compound sheet material suitable for wrapping foodstuffs comprises two or more sheets of metal foil united together by means of polyvinyl acetate applied as a solution to one or both of each pair of surfaces to be united and dried to a tacky condition before pressing together. Alternatively the polyvinyl acetate coating or coatings may be completely dried and moistened with solvent before pressing together. A plasticizer such as dibutyl phthalate may be added to the polyvinyl acetate, and the adhesive may contain metal, e.g. bronze or aluminium powder. One or both surfaces of the compound sheet may be waxed. British Specification 271,090, [Class 140], and Australian Specification 5520/31 are referred to.
Patent GB-250471-A (GB)
Title: Improved holder for thermionic valves
IPC: H01R33/76
Filed: 1925-09-26
Abstract: 250,471. Nicholitch, B. Sept. 26, 1925. Vacuum tubes.-An anti-vibration thermionic valve-holder has a flanged socket-carrying member A mounted loosely on a base B by means of four springs D, each having two parts wound in an anti-clockwise direction, one part L being wound horizontally and fitting around a socket H, and the other part M wound vertically and having an extension receiving a wiring terminal E; a screw J, threaded in a coiled spring, connects the member A and the base so as to permit adjustment of the springs D. and serves as a stop during removal of the valve. Specifications 240,918 and 250,460 are referred to.
Patent GB-906814-A (GB)
Title: Surface scrubbing device
IPC: A47L11/34
Filed: 1961-07-04
Abstract: 906,814. Floor and carpet scrubbing machines; rotary brushes. ELECTROLUX CORPORATION. July 4, 1961 [July 18, 1960], No. 24070/61. Classes 19 and 138 (1).  A floor or carpet scrubbing machine is supported on the surface to be cleaned by a bearing surface 70 at the lower end of a skirt 62 depending from the power unit, and the bristles of a rotary brush 60 within the skirt are sufficiently long to extend, when straight, beyond the surface 70. The brush is rotated by a turbine 20 operated by connecting a conduit 31 to a source of suction such as a vacuum cleaner. The operator feeds detergent liquid to the floor or carpet as required by pulling a cord 98 to open a valve (not shown) to permit the liquid to flow from a reservoir 72 through a conduit 88 and a nipple 90. Specification 672,760 is referred to.