baber/WOPTO huggingface dataset:
Patent GB-1104104-A (GB)
Title: New reactive acid anthraquinone dyestuffs containing a 2-chloro-benzthiazole group, their preparation and their application
Inventor: SIMONNET ANDRE ALBERT PAUL
IPC: C09B62/345
Filed: 1965-09-23
Abstract: The invention comprises dyestuffs of the formula <FORM:1104104/C4-C5/1> wherein R represents an alkyl group, X represents H or a sulphonic acid group, n represents 1 or 2, and ring A may be further substituted by halogen atoms or alkyl or alkoxy groups. They may be prepared by treating anthraquinones of the formula <FORM:1104104/C4-C5/2> with 2 - chloro - benzothiazolesulphochloride and, if desired, further sulphonating when the product contains only one or two sulphonic acid groups. Examples are given for production of the dyestuffs.  The dyes may be used to dye fibres containing OH or NH groups.  The intermediates of Formula II may be obtained either by condensing 1-amino-4-bromo -anthraquinone-sulphonic acids with N1-alkyl -N1- acylphenylenediamines, then eliminating the acyl group by hydrolysis, followed possibly by sulphonation; or by condensing the same anthraquinone sulphonic acids with N-monoalkyl - diaminobenzenesulphonic acids. Preparation of these intermediates is exemplified in the examples.
Patent GB-1277977-A (GB)
Title: Automatic curve tracing systems
IPC: G06K11/02
Filed: 1970-08-24
Abstract: 1277977 Automatic curve tracing apparatus IWATSU ELECTRIC CO Ltd 24 Aug 1970 [25 Aug 1969] 40606/70 Heading G4H In automatic curve tracing apparatus for detecting a pattern on a drawing a series of closed path scanning operations are performed, the positions at which the curve is sensed by a detector 21 (Fig. 7) being stored and utilized (1) to determine the direction in which the detector and drawing should be relatively moved to the next scan and (2) to forecast the positions at which the curve will be intersected in the next scan. As described at each scan the light detector is stepped in a square, the positions of the steps at which the edges of the curve are sensed being averaged in mean value detector 107 so that numbers representing the mid-points of the intersected curve are stored in memories 108, 109, 110, 111. As shown in Fig. 8, when the scan of a block 50 is complete resulting in mean values a 1 , b 1  being found and determined as being the points corresponding to the required tracing direction and the tracing forbidding direction respectively (and hence stored in tracing direction memory 124 and tracing forbidding direction memory 125), points a 2  and b 2  representing the points of intersection of the next scan block 53 with the line joining the points a 1  and b 1  are deduced by a forecast operation circuit 126 and stored in registers 113, 114. When the scan of block 53 is complete these stored points are compared with the actual sensed points a 3  and b 3  found during the scan and stored in registers 108, 109, 110, 111, a minimum value detector 123 determining that point a 3  is nearest to the required direction and the point b 3  is nearest to the forbidden direction, these new values then being stored in the memories 124, 125. These memories detect which of eight reference directions is nearest the stored direction to control the movement of stepping motors moving the detector and drawing for the next scan. The directions are also used to forecast the points of intersection of the following scan and the curve. A forecast tracing forbidding direction is also determined and stored. As described the detector is optical but other detectors may be used. The single detector may be replaced by several detectors arranged in a square and energized sequentially to perform the scan. Instead of a square scan, hexagonal or octagonal scans may be used.
Patent GB-965849-A (GB)
Title: Emulsifiable derivatives of natural waxes and method
IPC: C11C3/04
Filed: 1962-10-29
Abstract: Natural waxes are reacted for 2-4 hours at 115-170 DEG  C. with excess of an aliphatic carboxylic acid having an acyl group which is different from the acyl group of the wax in the presence of an acidolysis catalyst thus causing the acyl group of the wax to be replaced by that of the acid and yielding an acidolized wax product having an acid index higher than that of the natural wax. The reaction product is washed with a suitable solvent and may be further refined by bleaching and steam deodorization. Waxes specified are wool wax, carnauba wax and beeswax.  Acids specified are formic, acetic, propionic, diglycolic and chloroacetic acids. The acidolysis catalyst may be an esterification catalyst, e.g. paratoluene sulphonic acid, sulphuric acid and hydrochloric acid. The wax product may be neturalized to yield soaps, e.g. sodium, potassium, lithium, calcium and aluminium soaps, which may be mixed with mineral oils giving clear gels.  The examples describe the acidolysis of wool wax with all of the above acids, beeswax with acetic and propionic acids and carnauba wax with acetic acid.
Patent GB-1170689-A (GB)
Title: Clad Refractory Articles
Inventor: BRUNS JOHN HENRY
IPC: C03B5/167
Filed: 1967-09-06
Abstract: 1,170,689. Refractory blocks; discharging glass melting furnaces. CORNING GLASS WORKS. 6 Sept., 1967, No. 40743/67. Heading F4B. A method of manufacturing a refractory article, e.g. a lip block or an orifice ring for the delivery system of a glass melting furnace, comprises cladding the refractory backing with a thin sheet of refractory metal, e.g. Pt or a Pt alloy, and evacuating the encapsulated refractory. The cladding is formed with an evacuation tube the walls of which may be compressed to seal it, and said cladding may also be hydrostatically pressed against the refractory. Evacuation of the cladding may be continued during passage of the molten glass.
Patent GB-1095920-A (GB)
Title: Continuous metal casting apparatus
IPC: B22D11/06
Filed: 1965-09-24
Abstract: 1,095,920. Continuous casting machines. SOUTHWIRE CO. and WESTERN ELECTRIC CO. Inc. Sept. 24, 1965 [Sept. 25, 1964], No. 40773/65. Heading B3F. A wheel type continuous casting machine comprises a rotatable casting wheel 12, having a peripheral groove 17 and a continuous band engaging with a portion of the wheel periphery and moving therewith, and co-operating with the groove 17 to define a cavity in which the bar is cast. Means 13 for stripping the cast bar 18 from the groove at a predetermined point is provided in the form of a blade 32 secured between plate members 33. Conveying means 14 is further provided to support and convey the cast bar along a uniform path when it is stripped from the groove and to produce in the bar a tension to ensure that the cast bar is firmly held against the bottom of the groove until removed by the stripper 13. The casting wheel and the conveying means are independently power driven and the speeds are synchronised so as to produce the desired tension in the cast bar. The conveying means 14 is in the form of a series of grooved rollers 43 which are driven by chains and sprockets. The grooved rollers are each provided with a cooperating roller 52 which is actuated pneumatically so as to grip the cast bar between each successive pairs of rollers 43 and 52 to maintain the tension and convey the bar from the casting machine to a further work place. The conveying means 14 is mounted on a column 78 and is adjustable relative to the casting wheel.
Patent GB-959038-A (GB)
Title: Device for spreading out knitted tubular goods
IPC: D06C5/00
Filed: 1960-11-28
Abstract: 959,038. Finishing tubular fabrics. FLEISSNER G. m. b. H. Nov. 29, 1960 [Dec. 1,1959], No. 40995/60. Heading D1S. An internal stretcher for knitted tubular fabric comprises two guide members 1 each defining a curved path and connected together at their leading ends, which first receive the fabric, by a pivot 4, Fig. 1, or by a forwardly extending member 18, Fig. 3, the members 1 diverging from said leading ends and being connected together at or near their other ends by a transverse connecting member 2 which can be adjusted in length to vary the angle of divergence of the members 1. The members 1 are curved arms, profiled metal strips, hollow tubes or endless belts. Spreader rollers 2 bear against pressure rollers 5 and may each be made in two parts connected by a spindle the ends of which are provided with opposite screw threads. Alternatively, each of the rollers 2 may consist of a tube within which another tube is telescopically arranged. In one embodiment Figs. 1 and-2,the rollers 2 are mounted on a head piece 7 having a nose 8 extending into the nip between the rollers 5 and are made of bright, non-rusting material and may be provided with a synthetic plastic covering. A transverse adjustable connecting member 6 is provided between the curved arms 1. If the spreader is used horizontally rollers 13 may be provided to prevent lateral movement thereof. To reduce friction a number of rollers 17 may be arranged on the arms 1. Also, two pulleys around which endless belts 11 run and which are preferably driven by the rollers 2 may be arranged to each arm to convey the fabric. The belts 11 may be omitted and the fabric fed simply by the pulleys. In a modification, the arms are omitted and the belts form the guide members. In a further modification, a plurality of belts on each arm is provided. In an alternative embodiment, Fig. 3,the arms are curved inwardly at 10 and are connected by a resilient member 18. An untwister comprising a ball or a conical element may be inserted in the fabric upstream of the spreader or may be mounted thereon.
Patent GB-1037835-A (GB)
Title: Method and apparatus for making printing plates
IPC: B41C3/06
Filed: 1963-10-17
Abstract: 1,037,835. Printing surfaces. CHEMICAL PRODUCTS CORPORATION. Oct. 17, 1963 [Nov. 1, 1962], No. 41129/63. Heading B6C. A flexible printing-plate is made by feeding backing material 16 into the nip between a guide member such as a roller 62 and a moving matrix 82 and feeding hardenable-liquid facing- material 86 between the backing 16 and the matrix 82 in advance of the nip. The matrix with the backing 16 and the layer 86 are subsequently placed in a heated oven to harden the layer and cause it to be bonded to the backing, the parts 16, 86 then being removed from the matrix. Initially, a quantity of facing liquid may be poured upon the matrix and rubbed into the recesses by a brush. The matrix may be made of a thermosetting resin such as phenol formaldehyde, and the facing 86 of " plastisol," i.e. a dispersion of powdered vinyl chloride resin polymers or copolymers in a liquid plasticizer. The backing material preferably comprises at least two layers of "plastisol," the layer adjacent the facing being resilient and reinforced on its surface by a sheet of matted glass fibre, and the layer farthest from the facing including a filler and being grindable. To carry out the pressing operation, the matrix 82 is held by suction on a table 36 which is supported by a frame 24 and has a depending threaded part 32 engaging a screwed shaft 38 driven by a belt 44 from a motor 42. Adjustably mounted in brackets 52 attached to the frame 24 is the roller 62 and also a guide 60 for the backing. The liquid facing material is fed by a pump 74 to one or more nozzles 78 which may be held in the hand or mechanically supported. At the end of the table 36 is a trough 50 which receives excess material 86 at the end of a working stroke of the table. For fine work, the nozzle 78 may be subjected to ultrasonic vibration to ensure filling of the depressions by the liquid, and a vibrated doctor blade may be placed in the puddle of liquid in advance of the bite.
Patent GB-1087056-A (GB)
Title: Improved phenolic foams
IPC: C08L61/10
Filed: 1964-10-09
Abstract: Halogenated fluorohydrocarbons having boiling points of about - 40-200 DEG  F. are used as blowing agents in the production of foams of a fine cell structure from liquid phenol-aldehyde resole resins having viscosities of 200-300,000 centipoises at 25 DEG  C., preferably derived from formaldehyde.  There may be 2-50 parts by weight of the blowing agent per hundred parts of resole.  The usual surfactants may be used and other additives may include normally liquid glycidyl ethers of polyhydric phenols, and polyols and polyisocyanates.  More than one blowing agent may be used simultaneously, so that with two or more boiling points, expansion may be better controlled.  Various curing agents, such as mineral acids may be used in the process.
Patent GB-1504156-A (GB)
Title: Preparation of a crystalline form of quinacridone
IPC: C09B67/52
Filed: 1976-03-25
Abstract: 1504156 Crystalline form of quinacridone SUN CHEMICAL CORP 25 March 1976 [1 June 1975 2 Feb 1976] 41350/75 Heading C4P The invention comprises a red crystalline linear quinacridone pigment characterized by an X-ray diffraction pattern exhibiting strong lines at 14À3 , 6À4, 3À46  and 3À21 , a moderate line at 7À1 , weak lines at 5À4 , 4À2  and 2À35  and very weak lines at 5À0  and 4À4 A. The pigment is prepared by forming a mixture of crude linear quinacridone, a water-insoluble liquid having at least one hydroxy group, a surfactant and water, heating the mixture at reflux temperature and recovering the crystalline quinacridone. The water-insoluble hydroxy group containing compounds include higher alcohols, phenols and higher aliphatic carboxylic acids. The surfactants used include sodium naphthalene sulphonic acid formaldehyde condensate, alkylaryl ethers, dioctylsodium sulphosuccinate, sodium lauryl sulphate, cetyl trimethyl ammonium chloride and mixtures thereof. The pigments are used to colour paints, plastics, printing inks and textiles.
Patent GB-1285060-A (GB)
Title: Tetrahydroquinoxalines and their use as anti-ozonants
Inventor: LEY KURT
IPC: C07D241/42
Filed: 1969-09-15
Abstract: 1285060 Rubber anti-ozonants FARBENFABRIKEN BAYER AG 15 Sept 1969 [13 Sept 1968 (2)] 41353/69 Headings C3P and C3Q [Also in Division C2] Compounds of the general formula in which R 1  is hydrogen or a methyl group; R 2  and R 3  are hydrocarbon radicals having up to 4 carbon atoms or together complete a 6-membeted saturated carbocyclic ring which may be substituted by one or more methyl groups; and R 4  and R 5  represent hydrogen atoms or alkyl radicals with 1-12 carbon atoms or methoxy or ethoxy groups, one of the radicals R 4  and R 5  being a hydrogen atom when the other is a C 2 - C 12  alkyl group or a methoxy or ethoxy group, are used as anti-ozonants in natural or synthetic unsaturated rubbers. Examples are given of the use of the compounds as antiozonants in (a) styrene/butadiene rubber (Example 1) and (b) smoked sheets (Example 2).
Patent GB-1182882-A (GB)
Title: A Control Device for an Oil and Gas Operated Diesel Engine.
Inventor: THEODORUS ADRIANUS JOHANNES
IPC: F02D19/10
Filed: 1968-08-30
Abstract: 1,182,882. Regulating. SEA BIRD (CLEAN AIR FUEL SYSTEMS) Ltd. Aug.30, 1968, No. 41456/ 68. Heading F1B. In a dual-fuel engine having a Venturi 9 in the air intake controlled by a throttle valve 10, the suction at the Venturi throat 9a is transmitted through pipe 14 to a device 4 to control the fuel injection pump control rod 2 and to a device 16 to control the supply of gaseous fuel. The gaseous fuel is supplied through pipe 15 to the throat of a mixing Venturi 15a in the engine air intake and the valve 16 controls an air bleed into the pipe 15 to thereby control the gaseous fuel supply. Device 16 comprises a suction actuated valve 23 controlling the admission of air entering through openings 25 into a pipe 17 leading to the pipe 15. Opening of throttle valve 10 increases the pressure at point 9a, whereby diaphragm 5 moves rod 2 to the left to increase the liquid fuel supply and valve 23 moves closer to seat 24a to throttle the air bleed and thereby increase the flow of gaseous fuel through pipe 15. In a modification valve 23 controls the gaseous fuel directly.
Patent GB-892225-A (GB)
Title: Improvements in or relating to pneumatic conveying apparatus
Inventor: WILSON SYDNEY
IPC: B65G53/00
Filed: 1958-12-24
Abstract: 892,225. Pneumatic conveyers. BLAW KNOX Ltd. Jan. 15, 1960 [Dec. 24, 1958], No. 41702/58. Class 78 (1). A pneumatic conveyer comprises a container 10 having an inlet 12 and an outlet 14 for material and a single changeover valve 18 whereby the container may be connected either to the inlet side or to the outlet side of an air compressor 23. The valve 18 may be actuated automatically on a time basis or in dependence upon the weight of material in the container. The mouths of the inlet and outlet pipes are provided with one-way valves 13, 15; 16 and 25 are filters.
Patent GB-1526349-A (GB)
Title: Process for producing methacrylic acid and oxidation catalyst therefor
IPC: C07C57/055
Filed: 1976-10-08
Abstract: 1526349 Methacrylic acid JAPAN SYNTHETIC RUBBER CO Ltd 8 Oct 1976 [8 Oct 1975] 41910/76 Heading C2C [Also in Division B1] Methacrolein is converted to methacrylic acid by gas-phase oxidation by reacting methacrolein, molecular oxygen and optionally steam in a molar ratio of 1 : 1-3 : 0-50 at 250- 400‹ C. at a space velocity of 250-3000 hr<SP>-1</SP> (at NTP) with a catalyst of the composition Mo a P b Zr c V d Mn e X f O g  where a=12, b=0À5-5, c=0À1-5, d=0À05-3, e=0À05-1À5, f=0À1-3 and g=40-60, where X=K, Rb, Cs or Tl.
Patent GB-1421283-A (GB)
Title: Method and apparatus for holding a workpiece in a selected  position
IPC: B25B11/00
Filed: 1973-09-06
Abstract: 1421283 Vacuum work-holders DBM INDUSTRIES Ltd 6 Sept 1973 [6 Sept 1972 5 Sept 1973] 41928/73 Heading B3D A vacuum work-holder comprises a face having sealing means 218 which define a plurality of bounded zones 230, each zone being in flow communication through a calibrated opening 282 with a source of sub-atmospheric pressure, the opening being maintained at all times in the same operating condition, i.e. open, irrespective of whether or not the bounded zone is fully covered by at least a part of the workpiece and limiting the flow of air therethrough to a controlled volume which establishes and maintains a sub-atmosphere pressure in each fully covered bounded zone. The sealing means 218 is in the form of an elastomeric sheet having openings 220 defined by side walls 222, each opening being clamped by a flanged washer 236 and insert 240 to a top plate 214 in turn secured by bolts 216 to a bottom plate 212. The inserts are received in openings 242 in the top plate, and the openings communicate through passages 246, 244 in the mating face of one or other of the plates 212, 214 with vacuum manifolds 250, 252 which are interconnected by "quick-connect" couplings so that the work-holder can be made of any desired size. Each insert 240 has an axially-extending bore 280 which communicates with a transverse opening 282 in which is disposed a flow-constricting means providing the calibrated opening for restricting the flow therethrough to 0À01 to 0À02 cubic feet per minute at a pressure differential of 2711 of mercury, the diameter of the opening being between 0À001<SP>11</SP> and 0À010<SP>11</SP>. The calibrated opening 296 is preferably formed in a plug 290 of polymeric material which is pressed into the opening 282. The calibrated opening 296 may be cylindrical and open by way of a tapered portion 294 into a larger diameter opening 292. In another embodiment, the calibrated orifice may have a tapered portion, be annular or have a knife edge. When the orifice is annular, the centre portion may be tapered and adjustable to vary the area of the orifice. The surface against which the workpiece is placed may be rigid or flexible or resiliently deformable in the form of a blanket. The calibrated openings may be used in a tubular roll for conveying sheet material in printing processes.
Patent GB-947371-A (GB)
Title: Improvements relating to sound transmission systems
Inventor: PERCIVAL WILLIAM SPENCER
IPC: H04S3/00
Filed: 1958-12-30
Abstract: 947,371. Automatic volume control; stereophonic systems. ELECTRIC & MUSICAL INDUSTRIES Ltd. March 29, 1960 [Dec. 30, 1958], No. 41976/58. Heading H4R. In a sound transmission system control means are provided for controlling the loudness of a sound to be reproduced, as a function of the direction or position of a source of the sound. Spaced microphones 1, 2 receive signals, which differ in dependence upon the position of the sound source, and feed these signals to pre-amplifiers, volume and tone control circuits 3, 4. The left- and right-hand signals V L  and V R  are combined linearly at 6 to form the composite audio signal V A  and they are also passed into a processing circuit 5 which derives a control signal V C . The relationship between the value of V C  and the direction of the source is shown at 7 and V C  has the form V L <SP>11</SP>/(V L <SP>11</SP>+ V R <SP>11</SP>), the derivation of which by the control circuit is fully described in Specification 871,992. V C  is then applied to a non-linear network 8 which is arranged to modify the control signal in a non-linear way; for example using a network similar in construction to that described in Specification 932,557, the relationship between its value and the source direction is arranged to be that represented by the diagram 9, i.e. V C  (modified) has a maximum value for central signals and is less for signals originating from any other direction. The modified control signal and the audio signal V A  are then multiplied together at 10, using for example Hall effect elements such as those described in Specification 932,557, the modified audio signal and the control signal then being transmitted in any known way. Non-linear network 8 may have a manual control for emphasizing signals from directions other than the central one. Fig. 2 (not shown) illustrates the invention as applied to a stereophonic reproduction system. In this case V L  and V R  are not combined, but are each multiplied by a modified control signal obtained from separate non-linear networks although it is stated that a single non-linear network only need be used. The invention may be applied to a system for increasing the number of audio channels available for producing stereophonic reproduction as described in Specification 932,557. Specification 890,833 also is referred to.