baber/WOPTO huggingface dataset:
Patent GB-250990-A (GB)
Title: Improvements in the simultaneous manufacture of ammonium sulphate and bisulphate and of sulphur
IPC: C01C1/246
Filed: 1926-04-20
Abstract: 250,990. Harnist, C. April 20, 1926. Sulphur.-Ammonium salt solutions of oxygen acids of sulphur are converted into ammonium sulphate and sulphur without danger of explosion by heating under pressure with direct introduction of steam. The latter is omitted when heating salt solutions if oxygen acids of sulphur other than ammonium bisulphite, alone or mixed with normal sulphite, is used. The solutions of ammonium bisulphite, thiosulphate, &c. may be produced from gases containing ammonia such as distillation gas and gases containing SO2. In one example in which a form of saturator is employed the sulphur dioxide is introduced at a point below that at which the ammonia is admitted, and the unabsorbed sulphur dioxide is collected within the saturator, for example by means of an inverted funnel placed below the ammonia supply pipe and removed. The excess sulphur dioxide is recovered in a series of scrubbers, the first of which receives the ammonium salts produced in the saturator. A portion of the bisulphite liquor from this first scrubber is withdrawn continually and heated under pressure for the production of ammonium sulphate and bisulphate and free sulphur. The solution containing bisulphate is utilized to absorb the excess ammonia leaving the saturator. In a second example acid liquor from a scrubber in which gases containing sulphur dioxide are treated with water is passed to another scrubber through which gases containing ammonia pass and is continuously circulated between the two scrubbers, a portion being withdrawn as required for conversion to sulphate or bisulphate by heating under pressure with introduction of steam. In a third example distillation gases freed from tar and containing sulphuretted hydrogen are charged with excess of sulphur dioxide by scrubbing them with a liquor containing ammonium bisulphite, thiosulphate, &c. and free sulphur dioxide, whereby a liquor containing ammonium bisulphite &c. is produced and the sulphuretted hydrogen is decomposed with the production of free sulphur. This reaction is facilitated by the presence of water and by subjecting the reacting gases to the action of an electrostatic or electromagnetic field. The gases charged with sulphur dioxide are then passed into a second scrubber in which they are treated with an ammoniacal solution or gaseous ammonia in the presence of a shower of the bisulphite liquor from the first scrubber. When an independent supply of ammonia is not available a part of the gas containing ammonia is charged with excess of sulphur dioxide and is then treated with the remainder of the gas. The gases containing ammonia are used in the hot state before the removal of tar or after the removal of the tar effected at a temperature above the dew-point. Specifications 5838/11. 10147/12, 12845/12, and 28820/12 are referred to.
Patent GB-1489761-A (GB)
Title: Process of treating tobacco
IPC: A24B15/26
Filed: 1974-03-08
Abstract: 1489761 Treating tobacco AMF INC 6 March 1975 [8 March 1974] 10470/74 Heading A2C Lipids are removed from tobacco by treatment with a solvent system comprising a hydrocarbon and an alkanol. The hydrocarbon is preferably hexane and the alkanol ethanol or isopropanol. The solvent system is preferably an azeotrope.
Patent GB-881315-A (GB)
Title: Improvements in thermistor bolometers
IPC: G01J5/20
Filed: 1960-03-24
Abstract: 881,315. Semi-conductor devices. FAIRWEATHER, H. G. C. (Barnes Engineering Co.). March 24, 1960, No. 10471/60. Class 37. Each element of a thermistor bolometer consists of a layer of sintered thermistor fused to a common backing layer of high heat conductivity. Fig. 1 shows the manufacture of such a bolometer. The heat conducting refractory backing 16 may be aluminium oxide, beryllium oxide or magnesium oxide. A thin mask 12 of plastic or metal is clamped to the surface and thermistor material consisting of a mixture of metal oxides such as manganese cobalt, iron or nickel formed with an oil vehicle into a paste is spread uniformly over the mask. If the mask is of metal it may be removed; if it is of a material which volatilizes at the fusing temperature it may remain. The assembly is then fired at from 1150‹ to 1250‹ C. until the thermistor material has sintered and has formed an electrically homogeneous layer with the backing material. If a metal mask is used, a preliminary firing below 800‹ C. may set the thermistor material before the mask is removed. The leads may be printed on the backing block and set by the firing. Alternatively, conductive fuses 22 (Fig. 3) of precious metal may engage the edge of the thermistors. Conductive pins may pass through the backing block to provide rear connections to the assembly. Fig. 5 shows an array of thermistors of graduated width so as to provide equal outputs from each thermistor when the array is subject to a predetermined dispersed spectrum.
Patent GB-775573-A (GB)
Title: Improvements in or relating to the automatic frequency control of electric oscillation generators
Inventor: BRYDEN JOSEPH EASTO
IPC: H03C3/09
Filed: 1954-04-09
Abstract: 775,573. Automatic frequency control systems. GENERAL ELECTRIC CO., Ltd. April 6, 1955 [April 9, 1954], No. 10552/54. Class 38 (4). The mean frequency of a frequency or phasemodulated oscillator 1 is retroactively stabilized by alternately applying its oscillations and those of a stable constant frequency reference oscillator 4 to a frequency discriminator 9 (of crossover frequency equal to the mean frequency of the oscillator 1 and reference oscillator 4) through a gate 7 controlled by a switching frequency 19, e.g. mains frequency of 50 c/s., converted to a rectangular waveform, and a limiter comprising an amplifier 12 with fast-acting automatic gain control loop 8. The discriminator output may then be amplified, and passed through a low-pass filter 16 (of cut-off frequency, e.g., 75 c/s.) to a sense discriminator 18 with input also obtained from the switching frequency 19 and output in magnitude and polarity stabilizing the mean frequency of the oscillator 1.
Patent GB-737820-A (GB)
Title: A gear-changing mechanism for motor cycles and similar vehicles
IPC: F16H63/14
Filed: 1953-04-17
Abstract: 737,820. Controlling change-speed gearing. JOZIF, J. April 17, 1953 [Sept. 17, 1952], No. 10564/53. Class 80 (2). Control means for a motor-cycle gear comprises a pedal lever 1 fixed to a shaft 2 slidable to occupy either of two axial positions, in one of which it serves during part of its turning movement for the normal step-wise gear changes on successive strokes of the pedal, while in the other axial position it serves, during a further part of its turning movement, to bring the gear to neutral. In the first axial position, in which the shaft 2 is normally held by a spring 29, a dog 3 engages a slot 10 to couple to the shaft a member 5 carrying spring- loaded pawls 7, 8 co-operating with grooves 15, 16 in a selector plate 17 rotatable about a pin 18 and carrying plates 20, 21 which are connected by springs 22 so that they can slide apart and which have cam slots 23, 24 engaged by slidable gear forks 25, 26. On moving shaft 2 to the left, Fig. 2, dog 3 disengages from slot 10 and a dog 4 engages a slot 11 to couple to the shaft a member 6 carrying a spring-loaded pawl 9 co-operating with the lengthened groove 16. At the end of the neutralizing action, pawl 9 is disengaged from groove 16 by a pin 12 on the pawl riding up an incline 13 on a fixed member 14. During a further turning movement, lever 1 may serve as the starter lever.
Patent GB-105693-A (GB)
IPC: E06C7/46
Abstract: 105,693. Swinden, C. R. W. and Swinden, C. G. H. Aug. 14, 1916. Ladders. - Non- slipping shoes for ladders consist of two metal sides or cheeks a secured to a wooden or other body b, which has a concave centre on its upper face and rubber bars, or corrugations, stods, &c. on the lower face. Each foot of the ladder is placed in the concave centre of a shoe and is prevented from kicking up or slipping out by a bolt or spindle d against which the side of the ladder bears.
Patent GB-912826-A (GB)
Title: Improvements in or relating to the production of isoprene-containing material
IPC: C07C2/08
Filed: 1960-03-23
Abstract: Isoprene is obtained by demethanising a C6 fraction, or a C6 fraction derived therefrom, obtained by dimerising propylene in the presence of a catalyst consisting of or comprising a lamellar complex of an alkali metal and carbon.  The dimerisation is effected as described in Specifications 912,822, 912,823, 912,824 and 912,825.  The product is fractionated to separate 2-methylpentene-2 which is demethanised. Alternatively the C6 product or a fraction thereof is isomerised and the isomerisate demethanised; unconverted C6 material is separated by distillation and recycled to the isomerisation or the isomerisate is fractionated to remove 4-methylpentene-2 which is returned to the isomerisation.  Isomerisation is effected over silica/alumina or clays at 150-300 DEG C., over sodium on alumina at -150 to 150 DEG C., over phosphoric acid or pumice at 150-300 DEG C. or with heteropoly acids at 50-300 DEG C.  Demethanisation is effected by pyrolysis at 600-1,000 DEG C. for 0.001-1 second in the presence of up to 10 mols of steam per mol of feed.
Patent GB-196914-A (GB)
Title: Improvements in and relating to closures for containers
IPC: B65D41/04
Filed: 1923-04-18
Abstract: 196,914. National Seal Co., Inc., (Assignees of Lee, N.). April 26, 1922, [Convention date]. Cap-sto,ppers, bayonet-joint.-In a closure for glass or like containers, and comprising a cap 16 with a depending skirt 17 formed with inturned lips 18 adapted to engage lugs 12 placed at equal distances around the vessel mouth, the rear of each lip 18 is bent to form an inclined face 21 strengthened by a bent part 22 and operating to stop the rotation of the cap and to draw it downwards on to the vessel to form an air-tight joint. The leading edge of each lip 18 is of rectangular formation, and is bent downwards to engage the rounded end 13 of the corresponding lug 12. Specification 147,511 is referred to.
Patent GB-483187-A (GB)
Title: Improvements in or relating to the fixing of glass windows
IPC: E06B3/58
Filed: 1937-04-14
Abstract: 483,187. Glazing windows. BRITISH ELECTRICAL FEDERATION, Ltd., and GOUGH, F. J. April 14, 1937, No. 10626. [Class 20 (iii)] A fillet or bead for securing glass panels or the like in rabbeted frames comprises a bent metal strip 5 of triangular outline and adapted when secured by screws 6 to wedge the glass and the resilient glazing channel 3 thereon against the frame. The face 9 may be of double or single thickness, and flat convex or concave, or may consist of a separate strip anchored by a rib 15 or recess at one end, Fig. 6.
Patent GB-583950-A (GB)
Title: Improvements in brake and clutch apparatus
IPC: B64C25/42
Filed: 1944-06-03
Abstract: 583,950. Friction clutches. DUNLOP RUBBER CO., Ltd., and BUTLER, H. J. June 3, 1944, No. 10705. [Class 80 (ii)] [Also in Group XXXIV] The invention is stated to be applicable to clutches but is described with reference to a wheel brake. A series of friction elements 3, moved radially by an inflatable member 8 of rubber or metal, are carried by a flexible metal band 1 which is folded transversely between the elements 3, and the margin of the band between the folds are secured to spring tongues .5 carried by the torque disc 6. The inflatable member 8 is supported in an annular member 9, the flanges 10 of which engage recesses 11 formed in the edges of the folded portions of the band 1. Tongues 21a on an annular ring 21 are secured to the opposite margin of the band. Segments 17 of heat-resisting material are interposed between the member 8 and the band 1 the webs of which are slotted at 18 to permit flexing as required by distortion of the drum. An air scoop 12 may be provided to direct cooling air through the channels of the band 1 and through openings 16 in the disc 6. In a modification, the support 9 is dispersed with, and the member 8 acts both upon a flexible folded metal band which applies friction elements internally to a brake drum, and upon another similar band which applies friction elements externally to a concentric inner drum. A modified form of band is shown in Fig. 4 and, in a further modification, the side walls 1 slope to enlarge the widths of the bottoms of the troughs. Another form is shown in Fig. 6 wherein the friction elements 3 rest on the bottoms of the troughs.
Patent GB-969230-A (GB)
Title: Improvements in and relating to printing machines
IPC: B41L41/06
Filed: 1961-03-23
Abstract: 969,230. Cleaning press cylinders. AGFA A.G. March 23, 1961 [March 26, 1960], No. 10735/61. Heading B6C. Ink is removed from an offset or blanket cylinder 6 by an apparatus comprising a cleaning roller 22 which is in contact with a roller 17 rotatable within a bath 18 of cleaning liquid. The rollers are swingable about a shaft 11 depression of a key 12a causing the roller 22 to contact the cylinder 6 against a spring 14. Deposition of the ink on the roller 22 is aided by an electrostatic charge generated by the friction arising between the jacket 7 of the cylinder 6-which is of rubber-and the jacket of the roller 22 which is of a high polymer, e.g. silicone rubber, polyvinyl chloride or polypropylene, having a micro-porous structure. The roller 22 must be at a higher positive potential than the cylinder. Establishment of the desired potentials may be effected by connecting the surfaces of the cylinder 6 and the roller 22 to suitable electrical sources and the bath of cleaning liquid with its associated roller may be omitted.
Patent GB-323984-A (GB)
Title: Improvements relating to combined garden rollers and brushes
IPC: A01B29/06
Filed: 1929-04-08
Abstract: 323,984. Baker, B. H. April 8, 1929. Rollers, garden. -Garden rollers are provided with one or more pivoted arms carrying brushes and with springs or weights for holding the arms with the brushes in active or inactive position. The arms b may be in the form of belt-crank levers pivoted on the roller spindle a and connected by springs d to the handle e, the arrangement being such that the springs hold the brush c in operative or inoperative position according to whether they are on one or other side of the spindle a. To move the brush into inoperative position the arms b may be raised until the springs d pass the ends of the spindle, or the handle c may be swung about the spindle to carry the springs past it. Weights on the arms b may be used instead of springs. In modifications the levers b are pivoted directly on the handle c or on plates attached to the handle. 'The levers may be extended to carry a brush at both sides of the roller. Rollers h are mounted at the ends of the arms b and the brush c is adjustably connected to the arms by slotted plates i and fastenings j. Alternatively, the rollers h may be adjustably mounted. A rotary brush may be driven from the main roller or its spindle, or from the rollers h.
Patent GB-1509553-A (GB)
Title: Selector and memory system
IPC: G11B17/22
Filed: 1975-03-14
Abstract: 1509553 Juke box WURLITZER CO 14 March 1975 [6 May 1974] 10833/75 Heading G5R A juke box selector and memory system comprises a selector key board 11 connected to an encoder 12 which supplies a coded signal representing a requested record to memory and control unit 14, on recept of the signal this acts via control box to drive a record carriage 17 moving records past a playing position and a shaft encoder 19 provides a coded signal representing carriage position to the memory and control when the coded signals are compared to stop the carriage when the requested record is at the playing position. The key board encoder is enabled by coin operated unit 13 and the selection stored in the memory and control unit is displayed in unit 16. The memory and control unit can also receive requests from a remote selector key board 21.
Patent GB-996638-A (GB)
Title: Multiway valve for pneumatic conveyors
IPC: B65G53/56
Filed: 1963-03-19
Abstract: 996,638. Valves. POLYSIUS G.m.b.H. March 19, 1963 [April 11, 1962], No. 10902/63. Heading F2V. [Also in Division B8] A multiway valve for pipe-lines in pneumatic conveyers for pulverent and granular materials comprises a valve casing 1 with two diverging pipe connections 2, 3 in one face thereof and a third pipe connection 4 in the opposite face, either of the diverging connections 2, 3 being closable by a common swivelling member 5 mounted on a swivel arm 11 which is hinged on a pivot pin 15 mounted in bearings in the casing 1 between the two pipe connections 2, 3. The swivelling member 5 in the shape of a sector which may substantially comprise e.g. a steel pipe is provided at the ends with flat seals 6 which are located thereon by means of projections 7 on the seal 6 and grooves 8 on the member 5. The swivel arm 11 is received in a recess 10 in the member 5 and is secured therein by means of a pin 14 and circlips 13. The fit between the arm 11 and the member 5, and between the arm 11 and the pin 14 is loose enough to ensure proper seating of the seals 6 on sealing insertions 12 screwed on to the ends of the pipe connections 2, 3. Armour plating may be provided on the swivelling member 5 and may project beyond the face of the seals 6. The valve may be operated and locked by means of either an oil-hydraulic actuation 17, Fig. 2 (not shown), or a hand-operated weighted lever arm. In a further embodiment, Fig. 3 (not shown), the swivelling member is in the form of a sphere and the sealing insertions on the pipe connections shaped to receive this. In a final embodiment, Fig. 4 (not shown), the swivelling member is similar to that first disclosed, but the sealing elements have conical seating faces and the pipe connection sealing insertions are correspondingly shaped.
Patent GB-954771-A (GB)
Title: Improvements in or relating to rotors for electric motors
IPC: H02K1/28
Filed: 1963-03-20
Abstract: 954,771. Rotors for electric motors. PHILIPS ELECTRICAL INDUSTRIES Ltd. March 20, 1963 [March 23, 1962], No. 11061/63. Heading H2A. Rotor laminations 1 are secured between end flanges 3 of nylon or polycarbonate material moulded in place in a matrix 6, contamination of the bearing surfaces of the shaft wih the moulded material being obviated by forming annular spaces 5 in the hub portions 4. The extensions 8 of the matrix which form the spaces 5 limit creepage along the shaft by plastic to parts of the shaft remote from the bearing surfaces.
Patent GB-1058588-A (GB)
Title: Temperature responsive control
IPC: G05D23/275
Filed: 1964-03-16
Abstract: 1,058,588. Fluid-pressure servomotor systems. ROBERTSHAW CONTROLS CO. March 16, 1964 [May 10, 1963], No. 11062/64 Heading G3P. A temperature responsive control device comprises a pressure regulator having an inlet 48 an outlet 50 and a pressure responsive movable wall 76, a first valve 110 biased to one position for controlling flow between the inlet and outlet and being operable by the movable wall, a second valve 92 for controlling flow to the inlet, a lever 134 operably associated with the movable wall and the second valve, the lever including a temperature responsive member 156 for operating the first and second valves, and holding means 150, such as a permanent magnet, for retaining the lever in an inoperative position until the member 156 reaches a predetermined temperature. The member 156 may be bi-metallic with the metal having the higher co-efficient of expansion forming its upper face while a U-shaped bi-metallic portion 155 carrying the member 156 has the element of higher co-efficient forming its outer face so that ambient temperature variations are compensated. A coil 160 is connected to the controlling thermostat so that the temperature acting on the member 156 is inversely proportional to the temperature sensed by the thermostat. When the member 156 has been sufficiently heated to overcome the attraction from the magnet 150 it deflects downwardly with a snap action to pivot the lever 134 counter-clockwise about a pivot 132 so that the valve 92 is opened and a spring 126 acting on the movable wall 76 is compressed. Further heating of the member 156 pushes the valve 110 away from its seat 108 and adjusts the biasing force on the valve in accordance with temperature variations. Flow through a restriction 52 in a bleed line containing the valves now causes a pressure drop in chamber 58 to open a main valve 64 supplying a burner. The valve 66 closes at a lower temperature than that at which it opens and the difference between the two temperatures may be adjusted by a screw 152. Adjustment screws 138 and 164 are also provided for the positions of the lever 134 and the member 156 in addition to a screw 172 for setting a stop 170 to limit the counter-clockwise travel of the lever 134. The device also includes a manual gas cock 26 and pilot and bleed valves 36, 54 as described in Specification 1, 058, 587.
Patent GB-707973-A (GB)
Title: Improvements in or relating to the manufacture of cigarettes
IPC: A24C5/18
Filed: 1950-05-04
Abstract: 707,973. Cigarette - making machines; cigarettes. MOLINS, D. W., and MOLINS MACHINE CO., Ltd. July 19, 1951 [May 4, 1950], No. 11091/50. Class 130 A narrow tobacco stream formed by showering tobacco on to a travelling surface and comparable in cross-sectional size with a cigarette rod so as to be suitable for forming into dense-end cigarettes is made uneven in density along its length, as it passes from a conveyer 3, Fig. 1, to a faster-moving conveyer 5 which may carry a cigarette paper web 4, by the action of spaced groups of accelerating fingers 8 on a wheel 7, the peripheral speed of which may be that of the conveyer 5. As shown, tobacco is delivered to the conveyer 3 by apparatus 1, for forming a tobacco filler, as disclosed in Specification 646,746, and two wheels 7, Fig. 2, rotating together side-by-side co-act with the stream as it passes over a bridge 6, against which it is pressed by piano wire or other resilient fingers 9 of the kind disclosed in. Specification 682,686. In machines for making cigarettes with dense tobacco portions at each end, the group spacing of the fingers 8 is such as to give denser tobacco portions at intervals of one cigarette length, the cigarettes being finally cut off through these portions. Where cigarettes with only one dense end are to be made, as mouthpieces cigarettes, the spacing is greater. Such mouthpiece cigarettes, having 'their dense ends adjacent the plugs, may be made from double-length cigarette rods according to the invention assembled with plugs in the manner described in Specification 430,742.
Patent GB-165586-A (GB)
Title: Improvements in full way valves
IPC: F16K3/18
Filed: 1920-04-22
Abstract: 165,586. Auld & Sons, Ltd., D. April 22, 1920. Wedging or jamming.--Sluice valves are provided with means for wedging them against their seats when in position. The two valve discs h, i, Figs. 1 and 2, are provided with inclined faces which engage with a roller m carried by a yoke l on the end of the operating-spindle b. The valves are enclosed in a cylinder g, which is divided horizontally and the halves bolted together by bolts g<1>. The valves carry projections h<1>, i<2>, Fig. 2, through which a spring rod j passes and normally draws the valve discs together so that they may be raised and lowered without friction against their seats. When the valves reach the bottom of their travel, they are forced apart by the roller m against the action of the spring j. In a modification, Fig. 4, the operating-rod is wedge-shaped at its lower end and is provided with an enlarged head n. If only one valve disc is used, the spring j would be connected with the disc and with the containing cylinder g. When the valves or seats require grinding, the upper half of the cylinder g is removed and the discs rotated with the aid of a series of holes in their circumferences.