baber/WOPTO huggingface dataset:
Patent GB-812345-A (GB)
Title: Improvements in or relating to the annealing of ferrous metal sheets, strip, wire ortubing
IPC: C21D9/58
Filed: 1957-04-09
Abstract: 812,345. Annealing. KELLER, J. D. April 9, 1957, No. 11517/57. Class 72 A method of annealing steel strip comprises passing the strip through a bath of molten alkali metal having zones increasing in temperature from just above the melting point of the metal to a desired maximum at or above the annealing temperature, the steel strip entering the zone of lowest temperature, passing through progressively hotter zones and then through progressively cooler zones. As shown, a strip 4 is passed into a container 3 for liquid sodium having a series of partitions 14 dividing it into a series of zones, the temperature of each zone being maintained at a predetermined temperature graduated from the lowest temperature at the top of the container to the highest at the bottom, the strip entering the uppermost zone through sealing rollers 7, 8, pasing round a roller 10 in the hottest zone and leaving through the coolest zone by way of sealing rollers 11. In this manner the strip is heated to the required temperature and then gives up its heat to the cooler zones, thereby conserving heat. Paddles 22 in each zone aid in maintaining a constant temperature throughout the zone. The top of the container may be supplied with nitrogen under pressure to prevent escape of sodium vapour. In a modification Fig. 1 (not shown) a series of chambers may be provided and the molten sodium circulated from zone to zone in counter-current to the direction of movement of the strip. In a further modification, Fig. 3 (not shown), the strip, after leaving the hottest zone, may pass through a space maintained at the temperature of the hottest zone, again entering the hottest zone and passing through the series of cooler zones. The molten metal may be sodium, potassium, or lithium or alloys of these metals with one another, and "strip" is intended to include sheet, strip, wire, or tubing. Specification 812,346 is referred to.
Patent GB-454448-A (GB)
Title: Improvements in electrical insulators having high surface leakage resistance and process of making the same
IPC: H01B17/50
Filed: 1935-04-15
Abstract: 454,448. Treating glass surfaces. CORNING GLASS WORKS, Walnut Street, Corning, New York, U.S.A.-(Assignees of Shaver, W. W. ; 214, Wall Street, Corning, New York, U.S.A.) April 15, 1935, No. 11648. Convention date, May 2, 1934. [Class 56] [See also Group XXXVI] To increase the surface leakage resistance of an insulator made of glass or of porcelain glazed with an alkali-containing glass, the surface of the insulator is impregnated over the whole or a part of its area with a copper and/or silver compound which stains the surface of the insulator yellow or red and which largely removes the alkali from the glass or glaze at the surface of the insulator. The impregnation may be effected by coating the insulator with an aqueous paste containing copper and /or silver sulphide and yellow ochre, firing the insulator at a temperature of 600 to 700‹ C. and thereafter annealing and cooling; or the insulator to be impregnated may be dipped in a molten bath containing copper and/or silver chloride, which bath may also include copper sulphide when the insulator is of lime glass. If a copper salt only is used for the impregnation the insulator is stained yellow, whilst an insulator impregnated with a silver salt or a mixture of silver and copper salts has an amber colour. To produce a red colouration, the insulator is impregnated with a copper salt and then heated under reducing conditions.
Patent GB-1026137-A (GB)
Title: Circuit arrangement for generating a sawtooth current in an inductive load
IPC: H03K4/62
Filed: 1963-03-25
Abstract: 1,026,137. Transistor saw-tooth circuits. FERNSEH G.m.b.H. March 25, 1963 [March 24, 1962], No. 11654/63. Heading H3T. A circuit for producing a saw-tooth current waveform in an inductive load comprises a switching transistor 4 coupled to the load 6, transistor 4 being driven via a transformer 1 with a waveform of which one half-cycle is equal to the maximum permissible reverse voltage whilst the other half-cycle is sufficient to saturate the transistor. Fig. 4 shows a horizontal deflection circuit for television apparatus. Capacitor 12 charges via resistor 11 and discharges when transistor 9 is turned on by a pulse at the base. The saw-tooth voltage thus produced is amplified and limited by transistors 13, 14 giving waveform a (Fig. 3), which is coupled via transformer 1 to the output transistor 4. An energy recovery circuit 5, 8 is included. Transistor 4 is cut off by the positive half-cycle A at the end of each sweep, causing a resonant return of the current in deflection coil 6. Diode 5 becomes conductive when the collector voltage becomes positive, starting a further sweep, the current in coil 6 being diverted from diode 5 to transistor 4 when the collector voltage becomes negative, the base current saturating the transistor. Diode 5 may be inductively coupled to transistor 4. The amplitude of the positive halfcycle of waveform a should be approximately equal to the maximum permissible reverse input voltage so as to minimize charge storage effects. The trailing edge may be shaped as shown in the broken line. The invention may be applied to vertical deflection circuits if the drive waveform is replaced by waveform b. The mark/space ratio of the drive waveform may be adjusted by varying resistor 11.
Patent GB-629593-A (GB)
Title: Photographic emulsions
IPC: G03C1/04
Filed: 1946-04-16
Abstract: 629,593. Photographic emulsions. GEVAERT PHOTO-PRODUCTEN N.V. April 16, 1946, No. 11706. Convention date, April 24, 1945. [Class 98 (ii)] To a photographic emulsion which contains not more than 5 per cent of colloid binder of gelatin or of gelatin in admixture with polyvinyl alcohol and which cannot be coated in the usual manner, an amount of not more than 10 per cent on the weight of the gelatin of one or more water-soluble cellulose ethers of glycollic acid, homologues of glycollic acid or watersoluble salts of these ethers, is added before coating and without any further treatment for the purpose of increasing the viscosity of the emulsion, and the resulting emulsion is coated on to a suitable support. Examples to show the increase of viscosity of colloid solutions specify:. (1) addition of sodium cellulose glycollate to a 4 per cent gelatin solution; (2) addition of both sodium cellulose glycollate and sodium cellulose-2-hydroxy propionate to a 4 per cent gelatin solution; (3) addition of both potassium cellulose glycollate and sodium cellulose-2-hydroxy propionate to a solution of 3 grams gelatin and 2 grams polyvinyl alcohol in 100 c.cs. of water. The use of hardening agents such as chrome alum, acylamino compounds of an aromatic sulphonic acid and amylopectine ethers of hydroxyacids for the purpose of increasing the viscosity of colloid solutions is referred to. Specification 517,480 is referred to. The Specification as open to inspection under Sect. 91 comprises methods of increasing the viscosity of photographic layer-forming solutions by addition to them of at least one cellulose glycol ether or derivate without limitation of the nature of these layer-forming solutions or of the percentages of these substances which may be added. This subjectmatter does not appear in the Specification as accepted.
Patent GB-242681-A (GB)
Title: Improvements relating to combustion reactions and their utilisation
IPC: B01J19/00
Filed: 1924-05-12
Abstract: The heat of combustion of substances other than ordinary fuels, one or more of which substances are in the gaseous state, is used to raise the temperature of a liquid or suspension by effecting the combination in a chamber or burner the nozzle of which is immersed in the liquid or suspension.  The latter may also react with the substance produced by the combination or the product may be utilized in a subsequent process.  The burner employed may be of the type described in Specification 242,680, [Class 75 (i), Burners &c.]. Sulphur dioxide produced by burning sulphur or sulphuretted hydrogen may be employed for the production and concentration of solutions of sulphites or bisulphites.  For example, the sulphur dioxide may be passed into a suspension of lime.  The sulphur dioxide may also be utilized in the process described in Specification 239,558, whereby zinc and lead sulphites and zinc chloride are obtained.
Patent GB-331014-A (GB)
Title: High frequency amplification by thermionic valves
IPC: H03F1/08
Filed: 1929-04-16
Abstract: 331,014. Murphy, F., and Power, E. J. April 16, 1929. Thermionic amplifiers.-In a thermionic valve high frequency amplifier the modification of the amplifier due to a change in the valves due to differing grid-plate capacity is prevented by interposing a buffer stage of low valve gain between a tuned circuit and the next amplifier stage. The Figure shows a buffer stage comprising valve 3 and coupling 4, 5, 6, between input 1, 2 and amplifying valve 7, which in addition serves as a volume control as the tapping on resistance 6 is adjustable. The arrangement facilitates the ganging of the tuning controls of a number of stages and numerical examples of the values of components are given in the Specification.
Patent GB-115556-A (GB)
Title: Improvements in the Manufacture of Bread and Ingredients therefor.
Inventor: CHANDLER JAMES
IPC: A21D2/36
Filed: 1917-08-16
Abstract: 115,556. Chanaler, J. Aug. 16, 1917. Bread.-The soluble aqueous extract of linseed, advantageously extracted by steaming or by boiling in vacuo, is mixed with the flour used in breadmaking. The infusion, after filtering to extract the insoluble portions of the linseed, should be such as will set to a thin jelly when cold, and may be hardened by admixture with gelatine in order to -render it marketable in a solid form. Malt extract or fat may also be added.
Patent GB-1530105-A (GB)
Title: Device for automatic dimension control of extruded blanks
IPC: B29C48/92
Filed: 1977-03-21
Abstract: 1530105 Automatic control of width OM FILIAL SPETSIAL KONSTRUKT BJURO PO AVTOMAT V NEFTEPERERABOTKE I NEFTEKHIMII USSR and OM INST INZHENEROV ZHELEZNODOROZHNOGO TRANSPORTA 21 March 1977 11866/77 Heading G3R A system for controlling the width of an extruded blank 2 (to be made into tyre inner tubes) comprises a first servo loop in which the motor 7 driving the screw of the extruder 6 receives, via amplifier 16, a voltage proportional to the output of an adder 12 whose inputs are respectively connected to a tachometer 8 measuring the speed of the screw and a screw speed reference source 13, and a second servo loop comprising a tachometer 11 coupled to a motor 10 driving a device 9 which draws off the extruded blank, the tachometer 11  supplying one input of an adder 17 the output of which, via amplifier 20 controls the speed of the draw-off motor 10, and the other input of adder 17 being selectively coupled, by switch 18, to a drawoff speed reference source 19 (for manual control) or to the output of an adder 23 the inputs of which respectively correspond to the screw speed signal from tachometer 8 and a width error signal from a further adder 21. The latter receives inputs from a device 1 measuring the width of the blank and a desired width signal from a reference source 3. A non-linear coupling unit 15 ensures that the drawoff speed cannot be set to a value which is excessively disparate from the speed of the extruder screw; 14 is a matching attenuator. The width sensor 1 and control circuitry are briefly described.
Patent GB-212156-A (GB)
Title: Improvements in or relating to metal shelves
IPC: A47B47/02
Filed: 1923-05-04
Abstract: 212,156. Partridge, R., and Westwood & Co., Ltd., J. May 4, 1923. No Patent granted (Sealing fee not paid). Tie-rods.-A diagonal stay or bracing for metal shelves is made in two portions 5<a>, 5<b>, one end 6, 7 of each portion being secured to the parts to be braced together. The other ends 8, 9 of the two portions, which have to be secured together, are respectively provided, for the same distance, with a different number of holes, so that a bolt or other fastening can be put through the two holes which coincide. The two portions may be of unequal length.
Patent GB-576806-A (GB)
Title: Improvements in or relating to valves for regulating fluid under pressure
IPC: G05D16/10
Filed: 1944-06-26
Abstract: 576,806. Valves. DEX INDUSTRIES, Ltd., and THOMAS, E. M. June 26, 1944, No. 12087. [Class 135] A valve for regulating the flow of fluids under pressure comprises a piston valve member D' having an axial bore D<2> and a longitudinal slit D<3> which co-operates with a bore in a seat member B<1> to control the flow of fluid from an inlet conduit B to an outlet C. The piston valve D' is carried by a screwed plug D<4> which has a conical portion adapted to seat on to a seating B<2> on the seat member B<1>, in the fully closed position of the valve, and a passage D <5> to allow the fluid to pass to the outlet C. The plug D<4> is rotated by a winged nut E through a conical stem F having a key and slot connection F' with the plug. The conical surface of the stem F has circumferential grooves F<2> packed with grease and is pressed into engagement with a seating F<3> by a spring G to ensure a gastight seal.
Patent GB-1253631-A (GB)
Title: Intraocular pressure testers utilising the applanation principle
Inventor: HEINE HELMUT
IPC: A61B3/16
Filed: 1969-03-07
Abstract: 1,253,631. Tornometers. OPTOTECHNIK G.m.b.H. 7 March, 1969 [8 March, 1968], No. 12205/69. Heading A5K. [Also in Divisions G2 and G3] An intraocular pressure tester utilising the applanation principle includes a member 1, of predetermined weight, with a transparent portion 1 having a flat surface 2 at its distal end adapted to move freely in a housing 4. The tester includes a light source 5 and an optical magnifying glass 7. The transparent portion may consist of two transparent plates (14, 15, Fig. 2); a face of each being glued or cemented together and on either of the contacting faces a scale, such as a band of concentric circles, may be applied. The adjacent surfaces of the member 1 and the guide means 4 may be polished. The apparatus may have a level indicator mounded on the holder that can be observed by reflection by mirrors or prisms or directly through the optical magnifying glass 7. The member 1 may be made of a solid plastics and/or glass, but can also consist of a tubular outer member the distal and proximal ends of which are closed by cover discs; the proximal cover disc may be arranged so that its end face (10, Fig. 2) is at an angle to the axis of the apparatus. The member I includes an aluminium or aluminium alloy ring 11 that has a weight such that the measuring member 1 plus the ring 11 have the prescribed total weight. The tester may include a blue colour filter 6; this filter can be disposed at any place in the path of the illumination or observation rays, for example the lamp may be made from blue glass or a blue filter may be inserted in the lens frame 8.The scale may contain an inner circular area of one colour and a surrounding circular area of another colour, the radius of the inner area being chosen to enable the observer to distinguish whether or not a predetermined pressure is indicated. In a further embodiment two planeparallel plates (12, 13, Fig. 2) which may be of different colours may be inserted within the member at a selected angle of inclination to one another. Furthermore besides a magnifying glass 7 as illustrated the optical magnifying device may comprise a multiple-lens telescopic system or a simple Galilean or Kepler telescope.
Patent GB-472923-A (GB)
Title: Improvements in or relating to television and like receivers
IPC: H04N5/10
Filed: 1936-04-29
Abstract: 472,923. Television. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., KEMP, R. J., and FEWINGS, D. J. April 29, 1936, No. 12215. [Class 40 (iii)] Line and frame synchronizing signals are separated by application to a device having a characteristic with substantially different slope at different points. For example, with a screen-grid valve with a characteristic as shown in Fig. 2, the line signals L produce a sweep over the portion AC whilst the frame signals F of greater amplitude produce a sweep from A to B giving rise to a pulse of opposite sign. In the arrangement shown in Fig. 1, the synchronizing signals consisting of " blacker than black " modulations of different duration are applied over a condenser 1 and converted by a time-constant circuit 2, 3 to signals of different amplitude. The output pulses of opposite sign are taken off through a condenser 14 and separated by rectifiers or one set may be taken from the screen grid through a condenser 15. Preferably, the characteristic is such that the downward-sloping portion lies equally above and below the abscissa line. In the arrangement shown in Fig. 4, the pulses from the time-constant circuit TC are applied to the screen grid 9, the tube having a characteristic as shown in Fig. 5 which is worked over the parts GK, GJ. In the arrangement shown in Fig. 6, the synchronizing signals of different duration are applied to the grid of a triode 19 which is shunted by a condenser 21 and is connected in series with a screen-grid valve 41. Each signal reduces the resistance of triode 19 causing condenser 21 to discharge through the triode by an amount depending upon the duration of the signal. Corresponding opposite voltage-changes are produced across the valve 41 which sweeps over the substantially-flatbottomed part NQ of the characteristic, Fig. 8, for line signals and over the rising portion QP for frame signals. The screen-grid valve 41 may be replaced by a diode or a neon or other discharge lamp, and the triode 19 by a high resistance.
Patent GB-242943-A (GB)
Title: Twisting and doubling device for textile machines
IPC: D01H1/10
Filed: 1925-05-11
Abstract: 242,943. Leconte, G. Nov. 12, 1924, [Convention date]. Void [Published under Sect. 91 of the Act]. Doubling and twisting machines with twisting- arrangements at delivery; spindle apparatus; winding-machines. -A twisting and doubling apparatus for yarns, threads, cords, cables, and the like comprises a frame 1 carrying the bobbin 15 and a yarn tension device 18, and freely mounted on rotary shafts 3, 4, which are mounted eccentrically to each other and carry guide arms 13 through which the material passes, as shown by dotted lines, whereby two twists are imparted thereto for each revolution of the shafts. The shaft 3 is driven by a pulley 7 and rotates the shaft 4 through arms 10 connected by a thread, cord or wire 12; circular members may be used in place of the arms. The frame 1 remains stationary owing to the eccentric mounting of the shafts 3, 4. The yarn is wound by means of a roller 20 a pressing-element 21 and drum 22. The apparatus may be arranged horizontally the eccentric mounting of the shafts 3, 4 being dispensed with and the lower part being weighted to prevent rotation of the frame. The bobbin 15 may be a winding-bobbin, the yarn passing through the apparatus in the reverse direction from that shown.
Patent GB-312150-A (GB)
Title: Improvements in and relating to the mounting of the spindles in spinning or twistingmachines to facilitate doffing
IPC: D01H7/04
Filed: 1929-04-19
Abstract: 312,150. Coppenolle, G. van. May 21, 1928, [Convention date]. Spindle apparatus; spindle and lifting rails; doffing - arrangements; thread-severing arrangements. - In spinning and twisting machines such as described in Specification 293,826, wherein yarn is wound on a dragged bobbin mounted on a spindle by means of a driven tube or flyer carrying yarn guides which also impart an adjustable tension to the yarn, the tube or flyer 6 is of uniform internal diameter and is carried in ball bearings in rails 10, 11, the bobbin holder comprises a lower part 21 supported by a spindle 22 and an upper part 25 secured thereto by spring means and supported by a ball 31 on the upper part of the spindle. and the spindle-supporting table 39 carries a number of spindles and bobbin holders 127 - - 130, Fig. 4. and is rotatable so as to bring any one into the operative position and to allow the doffing of the filled bobbin. The rails 10, 11 are provided with oil-tight covers 12, 13, to shield the bearings of the flyer tube which are lubricated by sight-feed lubricators at the ends of the rails. The bobbin is secured to the upper part 25 of the bobbin holder which is detachably held in position on the lower part by a spring 27, and brake rings are mounted in a cup 24 to effect the drag. A lubricating cup 30 is provided and lubricant is conveyed therefrom to the head of the spindle. The yarn guides 84, Fig. 2, are secured to the tube by a shouldered screw 85, and are counterweighted and provided with a spring 89 to impart tension to the yarn. The tube is provided with a knee brake 90. The spindle-supporting table 39 is rotatably mounted on an axle 40 carried by a platform 53, and is normally locked to a wheel 47 by the engagement of fingers 45 with inclines 46. A rack 57 geared with the wheel 47 carries a hand-lever 122, Fig. 4, so arranged that when it is pushed in one direction, it raises the table 39 from the locking-inclines 46 and, when it is pulled back, actuates the wheel 47 by the rack, and a pawl 56 on the wheel 47 rotates the table 39 and so brings an empty bobbin spindle and carrier into operative position. This operation is effected when the platform 53 is in the position indicated in dotted lines in Fig. 1, the lifter motion being provided with a spring-controlled clutch whereby the ordinary lifter-mechanism is disconnected to permit this extra lowering movement. The lower edge of the tube effects the severing of the yarn upon restarting. The spring-controlled clutch in the lifter-motion gear is adapted to become automatically disengaged in the event of obstruction to the movement.
Patent GB-1260408-A (GB)
Title: Weft stop motions for looms
IPC: D03D51/34
Filed: 1969-03-07
Abstract: 1,260,408. Weft stop motions. SULZER BROS. Ltd, 7 March, 1969 [26 April, 1968], No. 12253/69. Heading DIE. A photo-electric weft stop motion is bodily moved to scan the expected position of the weft in a gripper shuttle loom. The light source 26 is focussed to the width of a weft and shines through a mirror 27 to a reflector 21 under the weft thread which returns the beam by way of the mirror 27 to a cell 28 which is arranged to stop the loom in the absence of weft. The light 26, mirror 27 and cell 28 are housed in a box 25 that is pivoted about 31 to scan over the angle α, the expected location of the weft. The box may move through the angle α and also return for each pick or may move on one pick and return on the next pick.
Patent GB-636809-A (GB)
Title: Improvements in sewing thimbles
IPC: D05B91/04
Filed: 1948-05-05
Abstract: 636,809. Sewing. PETERSEN, H. G. May 5, 1948, No. 12302. [Class 112] Thimbles. A thimble of plastic material has a threadcutting blade fitted in it, preferably by insertion during moulding, and arranged to lie below the level of the surface of the thimble. In the form shown, a circular or crossshaped blade 5 is moulded into the thickened end of the thimble and projects into several notches 4 in the outer surface of the latter. In a modification, a small blade may be moulded, or cemented, into a single notch such as 4; in this case a local internal thickening of the thimble wall may be provided to accommodate the notch, or, when the blade is inserted after manufacture, any blade edge protruding internally may be covered by plastic or other substance. According to the Provisional Specification the notch with the blade may be formed in a boss formed as a screwed attachment for the thimble or moulded integrally therewith.