baber/WOPTO huggingface dataset:
Patent GB-1308679-A (GB)
Title: Method of manufacturing rotary anodes for use in x-ray tubes
IPC: H01J35/10
Filed: 1970-11-05
Abstract: 1308679 Making anodes; welding by pressure PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 5 Nov 1970 [8 Nov 1969] 52715/70 Headings B3A and B3R A rotary anode for an X-ray tube is made by heating in a non-oxidizing atmosphere an anode portion 6, Fig. 1, consisting mainly of tungsten and a support portion 1 mainly of molybdenum, and subjecting the portions to an impact which joins them together at their contacting machines surfaces, the resulting assembly of increased diameter then being stress-relieved by annealing. Sintered tungsten starting material may be used from which a wafer is sawn and then rolled to increase its density. A circular disc 6 is then cut which is ground and/or polished on at least one side. Molybdenum for the support 1 contains at least one constituent capable of raising the recrystallization temperature, e.g. titanium, zirconium or carbon, or of reducing the recystallization rate, e.g. potassium silicate. A known alloy may be used having the following percentages by weight: Ti-0À55 to 0À40, Zr-0À12 to 0À06 and C-0À03 to 0À01. The portions 1, 6 were assembled in a double box 3, 4 of molybdenum and heated to 1650‹ C. in a nitrogen or hydrogen atmosphere for impact between a hammer and anvil. Layers 10, 11, Fig. 2, produced by the boxes are removed by grinding or polishing. Stress-relief annealing is carried out in a non-oxidizing atmosphere, e.g. at 1000‹ C. for 1À5 hours. The assembly may be cold-formed at 1000‹ C. into a dish, Fig. 4 (not shown), and drilled centrally. Starting material for the support may be formed by sintering a mixture of Mo powder and 0À001-0À005% potassium silicate. The material may be compacted by a forging or flattening operation. Both starting materials may be porous, matching of the deformability being by adjustment of the sintering. The support may be stiffened by silicon carbide needles or a grid of tungsten wire.
Patent GB-1410804-A (GB)
Title: Microform information storage arrangement
IPC: G03B21/64
Filed: 1972-11-16
Abstract: 1410804 Microform information unit XEROX CORP 16 Nov 1972 [17 Nov 1971] 52949/72 Heading G2X A microform information storage unit comprises a microform storage member 12 carrying a number of information elements 38, to which is coupled an index member 14 carrying a number of index elements 39 corresponding to particular information elements, elements 39 being aligned with reference means in the reading apparatus. Thus in the reader of Fig. 6 (not shown) a pointer (19) is brought into alignment with a particular index element 39, which causes the corresponding information element 38 to be projected on to the display screen. The elements 38 and 39 may be formed on a sheet 11 of a plastics material, which sheet can be folded about a central hinge-line, Fig. 2 (not shown). A plurality of microform members may be flexibly intercoupled in predetermined alignment with a plurality of associated indexing members, as in Figs. (not shown) 11, 21 or 22, and can be folded to provide various configurations. The microforms can be used in readers having either a forward or rear image projection optical system, either the forward or rear surface of the microform being positioned in the projection plane.
Patent GB-1214000-A (GB)
Title: 3,1-benzothiazine derivatives and process for their manufacture
IPC: A61K31/00
Filed: 1967-11-27
Abstract: 1,214,000. Benzothiazine derivatives. FARBWERKE HOECHST A.G. 27 Nov., 1967 [26 Nov., 1966], No. 53960/67. Heading C2C. Compounds of the general formula (R = H, alkyl, cycloalkyl, alkenyl, cycloalkenyl, aryl, aralkyl, lower dialkylaminoalkyl, or lower aminoalkyl in which the amino group has the formula A#N-, A representing an alkylene group that may be interrupted by O, S, methylimino or benzylimino; R 1  = H, halogen, OMe, CF 3  or NO 2 ; R 2,3  = alkyl, cycloalkyl, phenylalkyl or phenyl, in which the phenyl group or the phenyl residue of the phenylalkyl group may be substituted by one or more substituents selected from halogen, OMe, CF 3  and NO 2 ) and their acid addition salts are prepared by (a) reacting a compound of the formula (X = Cl, Br, OH, SH, alkoxy, alkylthio or alkanoyloxy) or a salt thereof with (R values identical or different) or R.NCS or a compound capable of forming such an isothiocyanate, if necessary or desired in the presence of an acid and/or a dehydrating agent, (b) reacting a compound of the formula or a functional derivative thereof with an inorganic sulphide or, if X = SH or alkylthio, with a dehydrating agent, if necessary or desired in the presence of an acid, (c) reacting a compound of the formula (R 4  = Cl, Br, amino, SH or alkylthio) with R<SP>1</SP>NH 2  (R<SP>1</SP> = R other than H) or a salt thereof, or (d) reducing with a complex metal hydride or saponifying a compound of the formula (R<SP>11</SP> = alkyl, alkenyl, aryl, aralkyl, haloalkyl, lower dialkylaminoalkyl, or lower aminoalkyl in which the amino group has the formula A#N-), the compound being reacted, before or after reduction of the acyl group, with a dialkylamine or an appropriate cyclic amine in cases where R<SP>11</SP> = haloalkyl, optionally followed in each case by salt formation. The, lower dialkylaminoalkyl and aminoalkyl groups (excluding any interrupting methylimino or benzylimino group in the latter case) contain up to ten carbon atoms. The isolation of intermediate thiourea derivatives in process (a) is described. The above compounds possess a depressive effect on the central nervous system, a stimulating, tranquillizing and narcosis-prolonging activity and analgesic and spasmolytic activity. They may be administered in the form of pharmaceutical preparations containing them in association with a carrier.
Patent GB-1517090-A (GB)
Title: Non-return valve
IPC: F16K15/14
Filed: 1976-12-24
Abstract: 1517090 Valves NORTHVALE (ENG) Ltd 24 Dec 1976 54062/76 Heading F2V The diaphragm (22) of a non-return valve (10, Fig. 1, not shown) of the type having an apertured hollow conical seat (19) and a hollow conically shaped diaphragm secured therein, is moulded so as to give at least a portion of the length a non-circular cross-section (e.g. as shown) to pre-stress the diaphragm to ensure uniform distortion away from the seat in use. All of the diaphragm may have this shape, the radii of the holes 33 at the rim being greater than the radius of the rim 19C of the seat so that the diaphragm distorts to a conical shape when inserted into the seat. Alternatively, Figs. 6-8 (not shown), only a portion of the length, removed from the rim, may have a non- circular cross-section which forms longitudinal grooves (40) through which fluid flows to force the rim to distort to the same shape.
Patent GB-1095219-A (GB)
Title: A process for vulcanising natural or synthetic rubber
IPC: C08K5/43
Filed: 1965-12-24
Abstract: Natural or synthetic rubber containing or reinforcing filler is vulcanized by a system which comprises sulphur and a 1,3,5-triazine compound in which the grouping <FORM:1095219/C3/1> occurs once or repeatedly.
Patent GB-1253669-A (GB)
Title: Improvements in impregnating and drying of textile materials
IPC: D06M13/144
Filed: 1968-11-20
Abstract: 1,253,669. Treating textiles. ARTOS DR. ING. MEIER-WINDHORST K.G. 20 Nov., 1968 [22 Nov., 1967], No. 54963/68. Heading D1P. In a method of impregnating and drying textile materials in which a textile material is impregnated with a treatment medium and subsequently dried there is added to the treatment medium, prior to impregnating the textile material, alcohol to lower the boiling point and raise the viscosity of the treatment medium to form an impregnation solution, to obviate or mitigate migration of the treatment medium within the textile material during drying and to increase the speed of drying. The alcohol may be methanol in 30-50% volume of the solution.
Patent GB-1204149-A (GB)
Title: Single frame device for motion picture projectors
Inventor: BOHN LEON
IPC: G03B21/50
Filed: 1967-12-05
Abstract: 1,204,149. Cine projectors. L. BOHN. Dec.5, 1967 [Feb.6, 1967], No.55178/67. Heading G2E. In a cine projector, unobstructed single frame projection is ensured by the provision of raised segments 17 along the inner surface of the rim 15 of the shutter wheel 14, the segments corresponding to the shutter blades 18 in position and number. For single frame projection the normal rim drive through wheel 22 is disengaged and replaced by a drive to the said inner surface whereby, if a blade obstructs the projection aperture 35, the shutter wheel is further rotated by engagement with a segment 17 until the blade is clear, when the drive stops. The single frame drive wheel is coaxially mounted with a wheel 40 on a spring-loaded arm 44 pivoted at 52. Manual depression of button 62 cause solenoid 60 to pivot arm 44 clockwise against stop 56 such that wheel 40 displaces the normal drive from wheel 14 and is itself driven, stop 56 ensuring that only the segments 17 are driven by unit 38. Since wheel 14 also drives the claw feed mechanism, alignment of the film frame in aperture 35 is also ensured.
Patent GB-1444760-A (GB)
Title: Method of and apparatus for compacting fluid sludge
IPC: C02F11/12
Filed: 1973-11-28
Abstract: 1444760 Sludge stirring and settling apparatus SOC GENERALE DE CONSTRUCTIONS ELECTRIQUES ET MECANIQUES ALSTHOM 28 Nov 1973 [28 Nov 1972] 55295/ 73 Headings B1C and B1D Sewage sludge is concentrated in a vessel 5 having a sludge inlet 1, 3, 4, with a branch 2 feeding a flocculant, a clear liquid overflow 10, 11 and a rotary assembly o fperforate blades 7, which stir and agglomerate the flocculated sludge, and a perforate screw 12, which compresses the sludge particles and forces them through outlet 13. In Fig. 1 blades 7 and screw 12 rotate on a common shaft. In Fig. 2 (not shown) concentric shafts enable screw 12 to rotate slower than blades 12, and four sets of blades, screws and sludge outlets are provided in one vessel. Plate 19 is vertically adjustable to maintain a body of compacted sludge in outlet 13. Level sensors 6, 16 control the crosssection of outlet 13, the speed of screw 12 and the delivery of sludge to inlet 1 to maintain the level in the vessel between upper and lower limits. The outer ends of !blades 7 move at no more than order of 10 cm/sec, to prevent sludge particles from being broken up. In Fig. 3 (not shown) a positive displacement pump replaces plate 19 and outlet area control means 13'.
Patent GB-1464548-A (GB)
Title: Half-tone image reproduction
IPC: H04N1/12
Filed: 1974-11-29
Abstract: 1464548 Half-tone imaging CROSFIELD ELECTRONICS Ltd 29 Nov 1974 [29 Nov 1973] 55348/73 Heading G2M [Also in Division H4] A method of exposing a light-sensitive film 28 to a half-tone image formed on the face of a cathode-ray tube 24, in which the electron beam of the cathode-ray tube is deflected so as to generate on the face of the tube a succession of line scans, the intensity variations of each of which represent the density variations along a line of the half-tone image, and in which simultaneously with the deflection of the electron beam to generate the line scans, the beam is deflected transversely to the line scan direction and the film 28 is moved by motor control 34, 36 during each line scan in a direction and at a velocity such that the light spot which reaches the film does not move relative thereto in a direction transverse to the line scan direction, the movement of the electron beam transverse to the line scan direction being such that the light spot on the tube face corresponding to each element of the half-tone image moves a substantial distance in the said transverse direction during its existence on the tube face, whereby for each exposed element of the film 28 the area of the tube's phosphor layer which generates the exposing light shifts during the exposure, thereby reducing exposure variations due to non- uniformity of the phosphor layer. The image on the tube face may be magnified 26 when it reaches the film 28, in which case the film is moved at a velocity which is a multiple, corresponding to the magnification, of the speed of movement of each line scan in the direction transverse to the line scan direction.
Patent GB-1443996-A (GB)
Title: Mining machines
IPC: E21C27/06
Filed: 1973-12-04
Abstract: 1443996 Mining machines COAL INDUSTRY (PATENTS) Ltd 12 Nov 1974 [4 Dec 1973] 56130/73 Addition to 1229238 Heading E1F The short wall mining machine of Specification 1229238 is modified by removing the drive means for the endless cutter chain 7 of the machine from off of the frame 4 about which the chain is guided in a substantially vertical plane parallel to the conveying track portion 3 extending along the leading part 2 of the base 1 of the machine and repositioning the drive means 20, 21 in the machine so that the drive means constitutes at least a portion of the support means 25 by which the frame 4 is mounted on the base 1. Preferably the support means is pivotally mounted as at 27 on the base and is connected to the base by means, the location of which along the support means can be varied.
Patent GB-1354949-A (GB)
Title: Process for recovering pure maleic anhydride from crude maleic anhydride
IPC: C07C51/573
Filed: 1971-12-03
Abstract: 1354949 Purifying maleic anhydride VEBACHEMIE AG and METALLGESELLSCHAFT AG 3 Dec 1971 [12 Dec 1970] 56279/71 Heading C2C Crude maleic anhydride, containing maleic acid and other organic impurities, and obtained, for example, by oxidation of benzene or a C 4  hydrocarbon, condensation of the reaction gases to give a first fraction of maleic anhydride and dehydration of the remaining gases to give a second fraction of anhydride, is purified by a continuous process comprising (1) decomposing the maleic acid present by heat into maleic anhydride and water and separating off the water and lower-boiling organic constituents of the crude feed to leave an impure maleic anhydride; and (2) subjecting the latter to distillation, pure maleic anhydride being distilled off overhead. It is preferred to operate with a higher absolute pressure in step (1) (e.g. 100 mm. Hg. to atmospheric) than in step (2) (e.g. 60 to 200 mm. Hg.) and the maleic anhydride contained in the residue from step (2) may be recovered by distillation and recycled to step (1). Step (1) may be effected in a cascade comprising two or more stages.
Patent GB-1110740-A (GB)
Title: Improvements in or relating to the production of ª,ª-dichlorostilbenes
IPC: C05G3/90
Filed: 1966-12-20
Abstract: a ,b -Dichlorostilbene is prepared by heating 1,1,2,2-tetrachloro - 1,2 - diphenyl ethane with a metal having an atomic number of 22-28, or an alloy of such a metal, in an N-alkylated organic acid amide as solvent.  Derivatives of 1,1,2,2 - tetrachloro - 1,2 - diphenyl ethane substituted with non-ionegenic substituents in the phenyl nuclei may be converted into the corresponding a ,b -dichlorostilbene derivatives in the same way.  The process yields mixtures of cis- and trans-isomers, which may be separated or converted into the more stable transisomers, e.g. by heating.  A number of suitable N-alkylated organic acid amides for use in the process are specified. In an example 1,1,2,2-tetra - chloro - 1,2 - bis (41 - chlorophenyl) ethane is heated with iron powder in dimethyl-formamide to yield a ,b -4,41-tetrachlorostilbene. a ,b  - Dichloro - 4,41 - difluorostilbene and a ,b -dichlor - 4,41 - dibromostilbene are similarly obtainable.
Patent GB-1327068-A (GB)
Title: Leak detection in heat exchangers
IPC: F28D7/00
Filed: 1970-12-01
Abstract: 1327068 Leak detection in heat exchangers ELECTRICITE DE FRANCE 1 Dec 1970 [3 Dec 1969] 57011/70 Heading G1S When it has been determined during normal running of a heat exchanger having water and/or steam circulating in a tank of sodium that a microleak exists within a particular group of tubes, the tube having the micro-leak is determined by bring- ing the heat exchanger to a constant temperature at which the rate of heat exchange is substantially zero, simultaneously depressurizing all the tubes of the heat exchanger to a pressure slightly higher than the pressure of the sodium, connecting each tube of the group successively to a reservoir of hydrogenated fluid which is introduced into the tubes, and detecting the presence of hydrogen in the sodium when the hydrogenated fluid is introduced into the tube having the leak. The hydrogenated fluid may be water and/or steam, or hydrogen. As shown in Fig.3, water may be heated under pressure in a reservoir 10 having a volume equal to the volume of a tube. The reservoir 10 has a heater 17, a depth gauge 13, a temperature transducer 26, an inlet pipe 21 for pressurizing gas such as argon or nitrogen, a gauge 22 for measuring the pressure inside the reservoir, an outlet 20 for connection to a heat exchanger tube 5, and a further gauge 23 for measuring the pressure applied to tube 5. Alternatively, when hydrogen gas is used as the hydrogenated fluid, a hydrogen cylinder may constitute the reservoir, Fig.6 (not shown). Each heat exchanger tube may have a suitable aperture 30 for receiving a pipe coupling 33, Fig. 5, having a non-return valve 34, 35 through which the hydrogenated fluid is introduced into the tube. Inert gas may be used to maintain the desired pressure in the tubes throughout the test. The hydrogen in the sodium may be detected by a nickel membrane in contact with the sodium, or in contact with argon gas in contact with the sodium the rate of diffusion of hydrogen through the membrance being measured by a mass spectrometer.
Patent GB-1172750-A (GB)
Title: Device for Separating and Stacking Newspapers and the like.
Inventor: ANDERSSON ANDERS INGVAR
IPC: B65H31/32
Filed: 1967-12-15
Abstract: 1,172,750. Delivering sheets. BONNIERFÍRETAGEN A.B. 15 Dec., 1967 [23 Dec., 1966], No. 57226/67. Heading B8R. Folded sheets etc. 10 are delivered singly by a conveyer and dropped between guide plates 12, 13 past a photo-electric detector 14, 15 on to a pivoted tongue 16 which is moved between two portions under the control of a counter actuated by the detector, so that a given number of sheets are fed in turn into two stackers 18, 19, each comprising a bottom place 20 formed with fingers 21 between which project fingers 23 of side walls 22 to support the lower edge of the bundle. When a bundle is complete, the stacker is moved downwards along shafts 34 by pneumatic means controlled by the detector until the fingers 21 release the bundle which falls, guided by vibrating side walls 22, 25 into a compartment 26. Later a stack of bundles are removed by a pneumatically controlled plate 39.
Patent GB-1336010-A (GB)
Title: Textile winding devic3
IPC: D01H7/60
Filed: 1970-12-03
Abstract: 1336010 Spinning machines INDUSTRIEWERKE KARLSRUHE-AUGSBURG AG 3 Dec 1970 [23 Dec 1969] 57553/70 Heading DID '[Also in Division H2] A spindle 2 carrying a cop 4 is surrounded by laminated stator core 6 and a stator winding 8. A rotating electromagnetic field produced by the winding 8 causes a ball-shaped yarn guide 9, supported in a track 6b in the stator core, to circle the spindle and thus wind the yarn on to the cop. The stator core and winding are reciprocated in vertical direction. The spindle 2 may be stationary or driven in the opposite direction to the yarn guide 9. The stator winding may be poly phase or may be series of separate coils fed with d.c. through semi-conductor switching. As the package builds up the frequency and voltage of the supply to the stator winding may be reduced. These parameters may also be varied to ensure a constant yarn tension. A yarn guide in the form of an annular body supported by balls or rollers from the stator support is also disclosed, Fig. 2 (not shown).
Patent GB-1410379-A (GB)
Title: Master cylinder
IPC: B60T13/12
Filed: 1972-12-14
Abstract: 1410379 Master cylinders ALFRED TEVES GmbH 14 Dec 1972 [24 Dec 1971] 57700/72 Heading F2F A pressure boosted master cylinder comprises a master piston 13 pressurizing a first brake circuit 29 and having a cam face 31 controlling the opening of a ball valve 14 which supplies fluid pressure from an accumulator 32 to both boost the master piston 13 and supply a second brake circuit 30, the master cylinder having a secondary piston 61 which is acted on by the accumulator pressure to abut the piston 13 in the event of failure of the first brake circuit 29 to eliminate lack of "feel" in the brake pedal 16. During normal braking leftward movement of pedal-operated push-rod 24 causes a control piston 15 to abut the end wall of a portion 13c of piston 13 to move the latter leftwardly thereby closing a reservoir 49 connected compensation bore 27 and pressurizing the first brake circuit 29. At the same time passages 21a, 22 in the pistons 15, 13 respectively are aligned and further leftward movement of piston 13 opens valve 14 so that fluid from accumulator 32 passes via passages 32, 21a and bores 23, 46 into a chamber 45 to act on piston 13 to provide a boost thereto. At the same time fluid pressure is passed to the second brake circuit 30. Pressure in chamber 45 acts on rod 24 to provide the vehicle operator with a "feel". Once pedal 16 has been depressed the required amount and is held in a fixed position pressure in chamber 45 displaces piston 13 so that passages 22, 21a are no longer aligned and the flow to chamber 45 is interrupted and no further braking force increase occurs. If the second circuit 30 fails, the brakes are applied directly by the pedal 16. If the first brake circuit 29 fails piston 13 advances until it uncovers a bore 68 communicating with chamber 45 pressure being passed from that chamber to a chamber 62 via line 66 the relay causing rightward movement of secondary piston 61 until it abuts a pin 26 of piston 13.