baber/WOPTO huggingface dataset:
Patent GB-1427714-A (GB)
Title: Voltage adjusting circuit for deflection systems
IPC: H04N3/22
Filed: 1972-05-18
Abstract: 1427714 Sawtooth deflection current generators RCA CORPORATION 11 May 1973 [18 May 1972] 23542/72 Heading H3T [Also in Division H2] In a voltage regulated deflection circuit of the type in which a switch causes transfer of energy to a commutating network during one portion of the deflection cycle for supplying a deflection winding during another portion, a resonant circuit supplies energy to the commutating circuit and the inductance of this circuit is varied by a regulating voltage so to change the phase of the supply to the commutating circuit as to stabilize the deflective circuit output, e.g. with changes in supply voltage. Fig. 1 shows a known arrangement in which, at the start of the scan, current flowing from the deflection coils through diode 26 is decreasing. A pulse from a pulse forming circuit 36 prepares a thyristor 25 for conduction so that when the deflection current reverses the thyristor conducts, current then being provided from a capacitor 28 dimensioned to provide S shaping. Towards the end of the trace a thyristor 22 is triggered so that a resonant circuit 32, 34, 33, 25 starts to ring. The current increases to a value in excess of the forward current through thyristor 25 and the latter extinguishes. Meanwhile current has been building up in an inductor 15a via thyristor 22 and energy has been supplied through the deflection winding to recharge capacitor 28 via thyristor 21, coil 32 and capacitors 33 and 34 ready for the next trace. The oscillatory current in inductor 32 reverses and extinguishes thyristor 22. During the trace, energy flows from inductor 15a to charge the circuit 32, 33 and 34. The inductor 15a is shunted by an inductor 41 having a saturable core controlled in dependence upon the output of the circuit via circuits 38, 40 &c. An increase in output reduces the effective value of 15a and 41 in parallel, reducing the oscillation frequency and thus reducing the energy transferred to the circuit 32, 33, 34 so that any tendency for the output to change is compensated by an opposite change in the energy supplied to the deflection circuit. It is explained that with this arrangement the voltage across thyristor 21 due to the oscillatory circuit rises to a high value. Accordingly the circuit to the left of A, B, C, is replaced by the circuit shown in Fig. 3. This connects an oscillatory circuit 61, 63, 67 in the supply path which has the effect of reversing the phase of the oscillatory current applied at B so that the voltage across the thyristor is reduced. The regulating voltage supplied to terminal A varies the phase to maintain the output constant. In an alternative circuit (Fig. 5, not shown) capacitor 67 is connected in shunt with inductor 61 and in a further alternative (Fig. 6, not shown) the controlled resonant circuit is connected in shunt with the supply path. A permanent magnet may be coupled to the coils in Figs. 3 and 4 to offset the magnetization due to the current in the coil.
Patent GB-667219-A (GB)
Title: Improvements in or relating to the manufacture of moulds and moulded articles
IPC: B29C33/38
Filed: 1949-09-12
Abstract: 667,219. Powder metallurgy; making dies and turbine blades. PENRICE, T. W., and KNOWLSON, R. F. Aug. 30, 1950 [Sept. 12, 1949], No. 23546/49. Classes 83 (ii) and 83 (iv). [Also in Group V] In a method of making articles from metal powders a mould is first prepared by impressing a master shape in a powder-mass comprising a refractory metal, carbide, nitride or boride, or other powder capable of being sintered, partially sintering the mass by heat and pressure and removing the master shape. Metal powder is then introduced into the mould and compressed and sintered at such a pressure and temperature as to cause no further compacting of the mould. Any mould material adhering to the sintered article may be removed as by shot blasting. In an example, a master shape made from compressed carbon is impressed into a mass of titanium carbide powder by the application of pressure at a temperature of between 1600- 2000‹ C., a partially sintered mould being obtained. This mould is filled with a mixture of tungsten carbide and cobalt powders which is compacted at the same pressure as that used for shaping the mould and sintered at a lower temperature of 1350-1450‹ C. A five-grain titanium carbide powder could be sintered in a mould of coarser titanium carbide using a lower sintering temperature of 1450-1600‹ C. As applied to the making of a turbine blade, a mould is formed by a graphite pattern from titanium carbide powder using a pressure of three tons per square inch and a temperature of 2000‹ C. Powder consisting of titanium carbide containing 20 per cent by weight of cobalt was introduced into the mould and sintered at 1450‹ C. under a pressure of three tons per square inch. The mould was then removed by mechanical abrasion. The titanium carbide could be replaced by the metal itself or by its nitride, boride or oxide or mixtures thereof.
Patent GB-1073464-A (GB)
Title: Processes for the preparation of urea derivaties, and the compounds thus prepared
IPC: C08L75/02
Filed: 1964-06-08
Abstract: Urea derivatives are prepared by reacting an amino-compound (as defined below) with carbon oxysulphide at a temperature above 60 DEG C. or, if below 60 DEG  C., at a temperature at which the compound is molten, so as to form the corresponding desired urea. "Amino-compound" is defined as a compound containing a reactive hydrogen atom joined to a nitrogen atom, but does not include compounds which are already ureas.  Specified amino-compounds are aromatic and aliphatic amines, including polyamines, amino-acids, hydrazines and hydroxylamine. In some cases the product is a cyclic urea.ALSO:Polyureas are obtained by reacting longchained aliphatic or aromatic amines, containing at least 2 amino groups and having more than 3 carbon atoms between the amino groups, with carbon oxysulphide at a temperature above 60 DEG C. or, if below 60 DEG C., at a temperature at which the amine is molten.
Patent GB-1392919-A (GB)
Title: Adjustable instrument support arrangements
IPC: G03B27/56
Filed: 1973-05-18
Abstract: 1392919 Photographic type - composing apparatus BERTHOLD FOTOTYPE GmbH 18 May 1973 [19 May 1972] 23746/73 Heading B6W A photographic type-composing apparatus comprises a U-shaped support frame 1 and a projection head 3 movable vertically on the frame. The head carries two leg members 13 and 14 which extend into the frame and carry pressure pads 17 and 18 biased by springs 16 and 19 into engagement with the walls 6 and 5 respectively of the frame. The leg members also carry rotatable rollers 20 and 21 which engage with the rear wall 4 of the support frame. A rack 8, mounted longitudinally of the frame on support members 7, is engaged by a pinion 25 on the head 3. The pinion may be driven by a motor or manually operated crank to raise or lower the head. A plate 9 prevents dirt entering the support frame.
Patent GB-339301-A (GB)
Title: Improvements in or relating to combing machines for textile fibres
IPC: D01G19/14
Filed: 1929-08-03
Abstract: 339,301. Nasmith, J. W. Aug. 3, 1929. Combing-machines. - In a combing-machine of the Nasmith; Heilmann or analogous types in which there is a relative movement between the nipper and the detaching means, a detaching roller D, Fig. 1, is provided making intermittent rotating contact with the combing cylinder segment S to form a detaching pair operating in synchronism with the relative movement of the machine nipper and detaching nip, and in operative combination with a pair of independently driven piecing rollers P, P<1> adjacent to but not in contact with the roller D. The detaching roller D may be positively driven but preferably is rotated by frictional contact with the segment S, and may be supported by the means described in Specification 337,841. As the top piecing roller P<1> rotates counter-clockwise to re-deliver the end T for piecing, the roller D is stationary and serves to clear the roller P<1>, while, during piecing, both the rollers P<1>, D rotate clockwise and act as clearers for each other. An auxiliary roller p<2>, Fig. 2, which acts as a nip for the piecing end returned by the piecing rollers may also be provided when combing long fibres. The roller p<2> which preferably makes intermittent contact with the roller P, but may be in constant frictional contact therewith, is mounted in bearings 3 supported on springs 6 in a bracket 7 extending from the lever 8 which supports the detaching roller D, the rollers D, P<2> simultaneously moving vertically on movement of the lever 8 about the centre 9. A guide-plate 10 is provided between the last row of needles and the forward end of the segment S to direct the end T to the nip of the rollers P, P<2>. Specifications 13758/01 and 17495/09 also are referred to.
Patent GB-443110-A (GB)
Title: Improvements in or relating to equipment for projecting pictures and reproducing sound from a film
IPC: G03B31/00
Filed: 1934-08-20
Abstract: 443,110. Combined sound-reproducing and kinematograph apparatus. I. G. FARBENINDUSTRIE AKT.-GES., Frankfort-on-Main, Germany. Aug. 20, 1934, No. 23980. Convention date, Aug. 19, 1933. [Class 40 (ii)] [See also Group XX] A self-contained equipment for projecting pictures and reproducing sound from a film has the double-walled casing 1 divided into two compartments 2, 3, the fan 5 and the picture projecting lamp 6 and its resistance 7 being accommodated in compartment 2 whilst the other parts of the equipment are located in compartment 3. Air drawn in by the fan flows around the compartment 3 which may be provided with cooling fins, cools the condenser 9 and passes through opening 15 into compartment 2 where it flows round lamp 6 and resistance 7 and leaves by opening 16. The parts of the double walls of compartment 2 which do not serve as air way may be filled with sound and heat insulating material.
Patent GB-1511916-A (GB)
Title: Polyurethane elastomers
IPC: C08L75/04
Filed: 1975-06-04
Abstract: 1511916 Polyurethane elastomers IMPERIAL CHEMICAL INDUSTRIES Ltd 21 May 1976 [4 June 1975] 24101/75 Heading C3R Polyurethane elastomers are prepared by intimately mixing a thermoplastic polyurethane elastomer at an elevated temperature with a thermoplastic copolymer of ethylene and one or more unsaturated esters of a fatty acid, the copolymer containing a mono- or poly-carbodiimide as hydrolysis stabilizer for the polyurethane. Most preferably the copolymer is an ethylene/vinyl acetate copolymer containing from 4À3 to 13À8 mole per cent of vinyl acetate residues. Suitable carbodiimides are those wherein the carbodiimide radical links 2,4,6- tris - isopropylphenyl radicals. Melt - mixing techniques may be used to incorporate the stabilizer into the copolymer. It is preferred to first blend granules of the copolymer containing the stabilizer with granules of the elastomer and then to subject the blend to injection moulding, blow moulding extrusion or calendering, e.g. a temperature of 170‹ to 240‹ C.
Patent GB-919015-A (GB)
Title: Transistor emitter follower
IPC: H03K17/66
Filed: 1960-07-11
Abstract: 919,015. Transistor pulse circuits. CANADA, MINISTER OF NATIONAL DEFENCE. July 11, 1960 [Sept. 18, 1959], No. 24129/60. Class 40 (6). An emitter follower has its collector connected directly to earth so that when a first base bias supply renders the transistor fully conducting the emitter output terminal is earthed and has an input signal applied through a diode to the base so that when the signal has a predetermined value the diode conducts and causes the transistor to be cut-off. In Fig. 1, when switch S 1  is open, no current is fed to the base of transistor T 1  and it is non-conductive but sufficient current is fed through resistor R 1  to saturate transistor T 2  so that the output terminal is substantially at earth potential. When switch S 1  is made, transistor T 1  is saturated so that the output terminal is effectively connected to the +10 v. supply. The diode D 1  is chosen to have a lower voltage drop than occurs in the emitter-base junction of transistor T 1  so that transistor T 2  is cut off. Switch S 1  may be replaced by a permanent connection and switching effected by a switch connected between the base of T 1  and a negative supply. In Fig. 2, the output terminal is clamped to 10 v. by diode D 3  when transistor T 2  is non- conducting and a diode D 2  provides a sufficient voltage to cut-off the transistor when an input current i 1  is applied to D 2  via D 1 .
Patent GB-171201-A (GB)
Title: Spring drive for motor cars, motor cycles and the like
IPC: F16D3/12
Filed: 1920-08-20
Abstract: 171,201. Scott, W. Aug. 20, 1920. Shaft. couplings.-In shock-absorbing devices for use on motor-cycles, automobiles &c. in connecting two shafts, a hub to a driving-axle, &c. for drive in either direction, screws 3, 4 of the same or different pitch and of opposite hand formed upon the two parts 1, 6 to be connected are engaged by a nut 8, against which bear oppositely-acting springs 9, 10. Increase of load causes axial movement of the nut 8, which returns to its normal position when the load falls again.
Patent GB-1522950-A (GB)
Title: Circuit arrangements for recognising colours
IPC: G01J3/50
Filed: 1977-06-09
Abstract: 1522950 Facsimile DR-ING RUDOLF HELL GmbH 9 June 1977 [23 June 1976] 24241/77 Heading H4F Skin tone correction in a colour facsimile system is performed in addition to standard colour correction. A circuit 3 described wrt Fig. I (not shown) defines a colour recognition volume according to a set of user selectable parameters, in the three dimensional colour space (R, G, B). When signals representing co-ordinates in this volume are derived from the master 4 a correction signal MA is generated which is maximal at the volume centre and zero at the volume periphery. From U A  individual colour correcting signals are derived and applied 68 to the standard corrected 67 signals. The recognition volume may be constant or may vary in dependence upon a separation signal 79. Other applications of the colour recognition circuit are described.
Patent GB-748424-A (GB)
Title: Production of oxygenated hydrocarbons
IPC: C07B35/04
Filed: 1953-09-02
Abstract: Oxygen-containing organic compounds, including acetic and other acids, aldehydes and ketones, are produced by vapour phase partial oxidation of hydrocarbons comprising passing a main stream comprising oxygen and hydrocarbon through a heating zone in which the stream is heated to an elevated temperature below that at which uncontrolled reaction ensues and then through a reaction zone in which, following an induction period, the oxidation reaction proceeds at a rapid rate with a rise in temperature, and introducing into said main stream during the induction period a heated auxiliary stream comprising oxygen and hydrocarbon in which oxidation is proceeding. Introduction of the auxiliary stream reduces the induction period in the main stream.  Hydrocarbons specified are ethane, propane, butane, pentane, ethylene, propene, butene and pentene.  Mixtures of hydrocarbons may be used.  The hydrocarbon may be mixed with from 2 to 25 mol. per cent of oxygen in the form of air, oxygen enriched air or pure oxygen at a pressure of 20-300 pounds p.s.i.g. and heated to a temperature in the range from 500-700 DEG  F., preferably between 525 DEG -625 DEG  F.  The hydrocarbon in the auxiliary stream may be the same as or different from that in the main stream, and preferably constitutes between 5 and 20 mol. per cent thereof.  It may be mixed with 2-25 mol. per cent of oxygen and heated to an elevated temperature.  It is preferable to heat the auxiliary stream to a higher temperature than the main stream, e.g. 600-1200 DEG  F. Alternatively the auxiliary stream may be burned with a flame as it enters the main stream so that all or a part of the heating of the auxiliary stream takes place in the flame.  After completion of the reaction, the reaction mixture is cooled, e.g. by quenching with an aqueous medium, and the products are recovered therefrom. The unreacted residue may be recycled through the reaction, or passed through a hydrocarbon recovery system to separate useful hydrocarbons from diluents and inert gases.  In examples: (1) a mixture of n-butane and air is passed through a furnace and intro a reaction line; a 20 per cent by volume of the mixture is withdrawn, heated to 650 DEG  F. and passed through a reaction line until the temperature rises rapidly, whereafter it is injected into the main stream at a point where the latter leaves the furnace; following completion of the reaction, the reaction mixture is quenched with an aqueous medium, the products are recovered therefrom and the residue is recycled; (2) n-butane is oxidized by a procedure similar to (1) but using a mixture of methane and air as the auxiliary stream.
Patent GB-751326-A (GB)
Title: Improvements relating to cabinets and similar articles of furniture
IPC: A47B96/16
Filed: 1954-08-20
Abstract: 751,326. Cabinets. SUMMERS, M. Dec. 6, 1954 [Aug. 20, 1954], No. 24302/54. Class 52(1). When cabinet doors 12 are opened, a tray or shelf 11 is pulled out by links 13 and a top panel 14 is slid back by a linkage 15, 17, 19, 20. Specifications 674,685 is referred to.
Patent GB-794822-A (GB)
Title: Improvements in or relating to the construction of garments, furnishings, tents and other articles from textile fabrics
IPC: A41D27/24
Filed: 1954-08-20
Abstract: 794,822. Wearing-apparel. PARMENTER E. H. Aug. 20, 1954, No. 24328/54. Classes 63 and 141 [Also in Groups IX, X, XVI and XVII] A method of constructing a garment or other article comprises printing or weaving outlines of panels on a length of fabric, forming the fabric during weaving with apertures between the panels to facilitate separation of the panels from the fabric length, providing means woven, processed or applied along the edges of the panels whereby the separated panels can be disconnectibly fastened together at their edges, and so connecting a suitable assembly of panels to form the desired article. Fig. 11 shows a length of cloth 75 imprinted with panels 76...79 having apertures 104 between the panels to facilitate their separation and holes 80 along their edges; the panels can be joined along their edges by threading a filament through the holes. The panels may be of any suitable shape e.g. polygonal, truncated triangular with a curved base, segmental, &c., and may be reinforced adjacent the line of apertures. Instead of the holes 80, loops may be formed along the edges of the panels. Rectangular panels may be used to form a stole, Fig. 5 (not shown), or a skirt, Fig. 7, the ends 44, 45 being joined to complete the skirt Pleating may be effected by threading a strand 47 (Fig. 8, not shown) through the loops 46 in the upper edge to form flat folds. By providing a row of loops 99 the skirt may be shortened by folding up the edge 100 and securing the loops thereon to the loops 99. A sleeveless jacket, Fig. 9 (not shown) may be constructed from panels of truncated triangular shape. Rectangular panels may be employed for making capes, coats, jackets, panels of truncated triangular shape may be used to make jackets, skirts, stoles, hats and dresses. The units of a conventional suit pattern may be imprinted as panels on a length of cloth as set out above, so that after separation they may be disconnectibly connected by filaments threaded through the holes or loops at the edges to make the suit. Specification 710,953 is referred to.
Patent GB-296065-A (GB)
Title: Improvements in the production of printing surfaces
IPC: B41C3/06
Filed: 1928-08-23
Abstract: 296,065. Sauer, E. Aug. 24, 1927, [Convention date]. Printing-surfaces.-To make a printing-block of celluloid or like plastic material from a photographic gelatine relief, the relief surface is freed from water even in the minutest depressions, by treatment of the surface with amyl acetate. amyl alcohol, or the like, removing the same, and then removing any residual moisture with a blower or dust suction device. 'The surface of the celluloid is treated with a solvent, laid on the end of the relief surface, and a roller or rubber is then rolled or drawn slowly thereover in such a way that all air or any water particles pressed out are conveyed away in front of the roller. The surfaces may be left in contact for a while before being drawn apart.
Patent GB-1052455-A (GB)
IPC: C04B35/26
Filed: 1963-06-19
Abstract: 1,052,455. Magnetic compositions. SIEMENS & HALSKE A.G. June 19, 1963 [June 25, 1962], No. 24344/63. Heading H1H. A ferromagnetic manganese zinc ferrite having a maximum permeability greater than 8000 and a ratio of maximum permeability to initial permeability of about 3 to 4 includes one of the following oxides or oxide mixtures. 0À2 to 0À6% by weight of calcium oxide or 0À07 to 0À35% by weight of strontium oxide or 0.02 to 0À08% by weight of barium oxide or 0À03 to 0À07% by weight of silicon dioxide or 0À1 to 0À4% by weight of a mixture of equal parts by weight of strontium oxide, lanthanum oxide, niobium oxide and antimony oxide or 0À1 to 0À4% by weight of a mixture of equal parts by weight of strontium oxide, lanthanum oxide, niobium oxide, antimony oxide, and vanadium oxide and is coarsely crystalline, at least 5% of the crystal grains having a size from 50 to 600 microns. In preparation the main materials which may comprise 50-60 mol. per cent Fe 2 O 3 , 20-45 mol. per cent Mn 3 O 4  and 5-30 mol. per cent ZnO, are presintered at 900‹ C. for one hour. The product is mixed with the addition, ground, pressed into shape, sintered at about 1280‹ C. for 3-12 hours in N 2  or N 2  containing 7% O 2 , and cooled at 100‹ C. per hour. Reference has been directed by the Comptroller to Specification 776,710.
Patent GB-190232-A (GB)
Title: Improvements in or relating to waterproofing and colouring agents
IPC: C09D11/00
Filed: 1921-09-13
Abstract: The solution obtained by soaking the crushed fruit of semecarpus anacardium in a liquid such as methylated spirit, petrol, benzene, naphtha, ether, ethyl alcohol, or carbon tetrachloride, is treated with alkali, such as powdered sodium carbonate, to neutralize free acid.  The extract so obtained may be used as a marking-ink, when it is applied in the usual way, and the mark touched with dry sodium carbonate or with a dilute solution of the alkali.  The extract may be used as a dye.
Patent GB-1202838-A (GB)
Title: Pushbutton switch, more especially for electric installations in automotive vehicles
IPC: H01H13/56
Filed: 1969-05-13
Abstract: 1,202,838. Push-button switches. SWFSPEZIALFABRIK FUER AUTOZUBEHOER GUSTAV RAU G.m.b.H. 13 May, 1969 [27 May, 1968], No. 24375/69. Heading H1N. A switch of the successive-actuation type has a push-button stem 13 slidable in a housing 12 to move a contact bridge 29 over fixed contacts, such as 30, integral with terminal tags such as 31. A projection 19 on stem 13 carries a member 20 having resilient arms 21 terminating in hooks 22 for co-operation with shoulders 28 in a recess at the top of housing 12 which also guides a loose fitting U-shaped member 24 as shown. Depression of button 16 against spring 18 causes hooks 22 to latch the stem 13 in the "on" position (Fig. 3, not shown), by displacement of member 24 and engagement behind the shoulders 28. Further depression of button 16 causes the hooks 22 to ride inside the shanks 25 of member 24, which are tapered to ensure a friction grip such that release of button 16 then draws the member 24 back to the position shown in Fig. 2 where it prevents latching of hooks 22 by shoulders 28 (Fig. 5, not shown) and the stem 13 returns to the "off" position as in Fig. 2.