baber/WOPTO huggingface dataset:
Patent GB-1500954-A (GB)
Title: Numerically controlled machine tool
IPC: B23B1/00
Filed: 1975-04-10
Abstract: 1500954 Computer controlled machine tool REGIE NATIONALE DES USINES RENAULT 10 April 1975 [11 April 1974] 14851/75 Heading B3D [Also in Division G3] A numerically controlled machine tool is computer programmed, e.g. to grind three dimensional piston reproducers 8 used for internal combustion engines. The reproducer 8 starts as a rough cylinder or cone 100 and is machined to the shape shown in Fig. 2a, which also has an oval cross-section (Fig. 2b, not shown).  A table 1 is movable, along axis Z, by D.C. motor 4 having a pulse generating coder 5, and carries a cradle 2 articulated about axis 6, parallel to axis Z, using an electromagnetic vibrating pot 7 on the table 1. A wing 2a of the oscillating cradle 2 holds the rotatable reproducer 8 and a motor 9 drives a pulse generating coder 10 to give the reproducer angular position. Thus the reproducer 8 rotates, oscillates, and moves in the Z direction to be machined by the rotating grinding wheel 15. An electrodynamic speed pick-up 11 and a bridge capacitor position pick-up 12, between table 1 and cradle 2, are connected to a servo system 13 and grinding diamond 14 is used to set grinding wheel 15 at the end of each machining pass. Servo 13 receives signals simultaneously, via pass system 21, from desk 22 and smoothing interpolator 20, connected to computer 18 with alphanumeric or punched tape input 19, and controls the vibrating pot 7. Motors 4 and 9 have speed selectors 16, 17.  The desired reproducer shape is entered into the computer 18, e.g. a microprogrammed minicomputer, which computes in real time the relative distance between grinder and workpiece and produces an analogue output for servo 13. The shape data includes the number of privileged sections of the profile, the number of privileged sections of ovalization, and the number of harmonics, and is expressed mathematically as a deformation (from an original shape) Fr(Z,A)=Fp(Z) (the profile function)+Fo(Z,A) (the ovalization function). Fo(Z,A) is defined using a Fourier series limited, e.g. to ten harmonics, and Fp(Z) is defined as a limited number of points between which interpolation, preferably linear, will be made. The computer holds a table of angular cosines corresponding to coder 10 angular positions and continuously controls the distance between grinding wheel 15 and reproducer 8 using the servo controlled pot 7. The operator can control each pass or merely start a series of passes.
Patent GB-1331589-A (GB)
Title: 1-substituted-6-phenyl-4h-s-triazoleo-4,3-a 1,4-benzodiazepines
IPC: C07D487/04
Filed: 1972-03-29
Abstract: 1331589 Triazolo-benzodiazepine derivatives UPJOHN CO 29 March 1972 [28 April 1971] 14877/72 Heading C2C Novel compounds of the Formula VII wherein R is thio, C 1-3  alkylthio, amino, nitro or fluoro, R 1  is hydrogen or C 1-3  alkyl, R 2 , R 3 , R 4  and R 5  are hydrogen, C 1-3  alkyl, halogen, nitro, cyano, trifluoromethyl, C 1-3  alkoxy, C 1-3  alkylthio, C 1-3  alkylsulphinyl or C 1-3  alkylsulphonyl and their pharmacologically acceptable acid addition salts may be prepared (a) where R is thio by cyclizing a compound I with thiophosgene in the presence of a base; (b) where R is C 1-3  alkylthio by reacting VII where R is thio with base and C 1-3  alkyl halide; (c) where R is amino, cyclizing a compound I with cyanogen bromide; (d) where R is nitro, oxidising product of (c) with peroxytrifluoroacetic acid; (e) where R is fluoro, reacting the product of (c) with fluoboric acid and sodium nitrite and decomposing the fluorborate formed. The intermediate of the Formula I may be prepared by reacting the corresponding 2- thione with hydrazine hydrate. Pharmaceutical compositions of the compounds VII show sedative, tranquilizing and muscle relaxant effects when administered orally, parenterally or rectally with the usual excipients.
Patent GB-910493-A (GB)
Title: Process for the separation of perfluorocarbons
IPC: C07C17/386
Filed: 1961-04-25
Abstract: A process for the separation of perfluorocarbons from a mixture of fluorocarbons including tetrafluoroethylene comprises adding to the mixture an aliphatic hydrocarbon containing one or more chlorine, bromine or iodine substituents e.g. methylene chloride, chloroform, methyl chloride, carbon tetrachloride di-, tri and tetrachloro ethylene which is liquid at distillation conditions, and distilling the perfluorocarbons from the mixture. The mixture of perfluorocarbons may be produced by pyrolyzing chlorodifluoromethane or bromodifluoromethane preferably at a temperature between 450 to 900 DEG C. and separating any tetrafluoroethylene, hydrogen chloride or bromide and any unreacted chlorodifluoromethane or bromodifluoromethane from the mixture before the hydrocarbon is added.  An example shows the separation of hexafluoropropylene and perfluorocyclobutane from the pyrolysis mixture of chlorodifluoromethane, and tetrafluoroethylene from the pyrolysis mixture of bromodifluoromethane using methylene chloride as a hydrocarbon. Further examples show separation of hexafluoropropylene and perfluorocyclobutane from a mixture of these with bromodifluoromethane using toluene as the hydrocarbon and tetrafluoroethylene from a mixture of this with trifluoroethylene and difluoromethane using methylene chloride as the hydrocarbon. Specification 886,714 is referred to.
Patent GB-199031-A (GB)
Title: Improvements in shoes for horses, mules and the like
IPC: A01L1/00
Filed: 1923-06-07
Abstract: 199,031. Soc. Anon. Comptoir Bosmans-Gilson. June 7, 1922, [Convention date]. Fixing.- Horseshoes are provided with nail-holes of the same inclination as the surface of the hoof so as to ensure the proper penetration of the nails in the hoof and their protrusion at the desired height above the base of the hoof. The inclination of the holes varies round the shoe with the slope of the hoof.
Patent GB-475886-A (GB)
Title: Improvements in or relating to tubular steam generators
IPC: F22B29/06
Filed: 1936-05-28
Abstract: 475,886. Water-tube boiler furnaces. SULZER FRERES SOC. ANON. May 28, 1936, No. 15071. Convention date, June 20, 1935. [Class 51 (i)] Baffles; roofs.- In a " once-through" water - tube boiler in which a part of the tube system supports one or more baffles serving to reflect heat back on to the fuel, the baffles have plain surfaces and simply rest, without the employment of hooks or the like, within horizontal or inclined grid - like " racks " formed by bending parts of the water tubes. Fig. 1 shows inclined baffles 3, and Fig. 3 an horizontal baffle 3 forming the roof of the combustion chamber, the baffles in both cases being supported within racks formed by bending the tube 1 of the boiler. Fig. 4 shows the invention applied to a boiler fired by a liquid-fuel burner 12, the horizontal baffle 3 being arranged at the lower end of a feed-water heater 14 and supported in a " basket-like " rack forming by bending a part of the tube 1.
Patent GB-164014-A (GB)
Title: Improved apparatus for the separating of suspended bodies from electrical insulating gaseous fluids
IPC: B03C3/78
Filed: 1915-07-30
Abstract: 164,014. Moller, E. July 31, 1914, [Convention date]. Gases and vapours, electrically precipitating suspended particles from.-In an electric dust-separator, a liquid flushing-agent cleans the ionizing-electrodes and, if necessary, the collecting - electrodes. Means for regulating the temperature of the collecting - electrodes ma,y be provided. As shown, a trough 13 provided with outlets 42 around the wire ionizing- electrodes 1 supporte these wires and receives the cleaning-liquid in the form of separated drops from a pipe 40. Another pipe 46 supplies liquid to a trough into which project the tnp ends of the tubular collecting-electrodes 2. These electrodes are widened at their lower ends, and deliver the liquid to annular collectors 44. A casing 45 having inlet and outlet pipes 47. 48 for hot or cold liquids surrounds the collecting-electrodes. Specifications 17840/12 and 19732/13 are referred to.
Patent GB-529083-A (GB)
Title: Improvements in or relating to electrically operated sewing machines
IPC: D05B69/18
Filed: 1939-05-22
Abstract: 529,083. Sewing-machines. FAIRWEATHER, W. C. (Singer Manufacturing Co.). May 22, 1939, No. 15133. Drawings to Specification. [Class 112] Electrical operating and lighting equipment for a sewing-machine is adapted to be assembled apart from the machine and later attached to the complete machine without requiring any further connecting up. The motor, formed on a bracket for attachment to the machine, carries a contact box which is partly formed integral with the motor casing and in which the connections of the cables for the mains, controller and lamp are made, the lamp having a separate bracket for mounting on the machine.
Patent GB-587786-A (GB)
Title: Improvements in machine guards
IPC: B23Q11/08
Filed: 1945-09-08
Abstract: 587,786. Machinery guards. BROUGHTON, G. J. Sept. 8, 1945, No. 15203/44. [Class 80 (iv)] In a machinery guard for rotating tools, such as milling cutters, comprising a downwardly projecting fence of adjustable fingers 21 for adjusting the guard to the outline of the work and workholder, the adjustable fence is supported on a pair of U-shaped structures secured to the machine frame 11. Each U-shaped structure comprises limbs 19, 20 and an adjustable limb 18, the side limbs 18 and 19 being adjustably clamped in clamps 17. Each limb 20 carries a side guard of fingers 21 and end guards 27 are carried by the clamps 17.
Patent GB-1273801-A (GB)
Title: Radiant energy amplifier
IPC: H01L31/14
Filed: 1969-03-24
Abstract: 1,273,801. Electroluminescence. XEROX CORP. 24 March, 1969 [25 March, 1968; 6 May, 1968], No. 15291/69. Heading C4S. A radiant energy amplifier comprises at least one pair of energizing electrodes, electroluminescent phosphor 17 (e.g. 1 mm. thick) in contact with at least one electrode 16 of the or each pair, a field effect semi-conductor 14 either in contact with the other electrode pair or separated from same only by the phosphor (Fig. 3, not shown), photoconductive layer 13 in contact with the f.e.s.c. surface about which surface charges are trapped and control the charge flow, and means to apply charge to the photoconductive layer, such as electrode 12 or a corona discharge source. Layer 17 may be D.C. phosphor of CuCl and Mn activated ZnS or A.C. phosphor of CuCl activated ZnS as in Fig. 3 while layer 14 may be P- or N-type and of Si, Ge, CdS, CdSe, or ZnO. Layer 12 may be an oxide of copper or tin, copper iodide or gold, while layer 13 may be homogeneous or p.c. particles in a binder and with dopants and may include sulfur, anthracene, selenium, arsenic-sulfide, antimony, trisulfide, cadmium sulfide, cadmium selenide or sulfoselenide, lead oxide, lead sulfide, polyvinylcarbazole, phthalocyanine quinacridones, and zinc sulfide and be of 1 to 100 Á e.g. 25 to 50 thickness. Conductors 16 may be 10 mms. wide at 20 mms. interval. Positive or negative images with selective erasure may be attained with X-ray, visible, U.V. or infra-red inputs and a uniform flooding stage may be included. The f.e.s.c. such as N type ZnO may also be photoconductive and sensitive to violet light but insensitive to yellow light while an organic p.c. layer responses are the opposite. Yellow light flooding on the negative p.c. effects uniform darkening, a violet input effects a positive image and selective erasure may be achieved by yellow illumination in the required areas on negative potential electrode 12. Variations are described and graded light intensity images are possible. Reference has been directed by the Comptroller to Specification 1,201,374.
Patent GB-201326-A (GB)
Title: Improvements in thread guides for spinning and like machines used in the production of yarns or threads of fibrous substances
IPC: D01H13/04
Filed: 1922-06-01
Abstract: 201,326. Rhodes, L., Gill, H., Milnes, J., and Bentley, J. E. June 1, 1922. Thread-guides.-The porcelain guide-eyes 2, Fig. 2, employed in the ends of the detector levers 3<a> used in trap twisters, are secured in position by clips a, b on the arms of a bifurcated spring holder 4. Alternatively the securing- plate 4<a>, Fig. 5, may take over a projection 2<c> formed on the eye 2; or said plate 4<b>, Fig. 6, may be shaped to engage a groove in the eye 2. In a further modification, the eye 2, Figs. 9 and 15, is formed with a groove t which receives a securing- spring 8, Fig 10; while, when the securing-hole in the lever 3 tapers upwards, a holder 40, Fig. 16, is secured below the eye 2.
Patent GB-438609-A (GB)
Title: Improvements in the manufacture and production of derivatives of chrysenequinones
Filed: 1934-05-23
Abstract: Halogenated chrysenequinones, valuable as dyestuff intermediates, are obtained by causing halogen or agents supplying halogen to act in presence of organic diluents on chrysenequinones or on compounds thereof convertible into chrysenequinones under the reaction conditions, e.g. chrysenehydroquinones or esters thereof.  Specified organic diluents are glacial acetic acid, nitrobenzene, o-di-chlorobenzene and trichlorobenzenes.  The following examples are specified: (1) Bromine in nitrobenzene is added rapidly to a suspension of 1 : 2-chrysenequinone in nitrobenzene while avoiding rise of temperature and the resulting tribromo-chrysenequinone is filtered off and washed with benzene and alcohol.  (2) Bromine in glacial acetic acid is added to a suspension of the diacetyl compound of 2 : 8-hydroxychrysene, the whole is warmed to 30--40 DEG  C., and the resulting dibromo-2 : 8-chrysenequinone is separated; heating with boiling pyridine converts it into a monobromo-chrysenequinone. (3) Sulphuryl chloride is added to a suspension of the diacetyl compound of 2 : 8-dihydroxychrysene in glacial acetic acid containing anhydrous sodium acetate, the whole is warmed to 60 DEG  C., until sulphur dioxide no longer escapes, and the dichloro-2 : 8-chrysenequinone which is deposited on cooling is separated.  (4) Chlorine is passed into a suspension of 1 : 2-chrysenequinone in o-dichlorobenzene containing iodine and the resulting tetrachloro-1 : 2-chrysenequinone is separated.  (5) Bromine in nitrobenzene is added to a suspension of 1 : 2-chrysenequinone in nitrobenzene at 80 DEG C. until evolution of hydrogen bromide ceases, whereupon methanol is added, the mixture is filtered hot and the di-brominated product is isolated on cooling and may be recrystallized from chlorobenzene, nitrobenzene or pyridine.  (6) Bromine in nitrobenzene is added to a suspension of 1 : 2-chrysenequinone in nitrobenzene containing anhydrous sodium acetate and anhydrous ferric chloride, traces of water having first been removed by heating to 100 DEG  C., and the monobromochrysenequinone, which is deposited on cooling, is separated.
Patent GB-1103727-A (GB)
Title: Electrical contact and edge connector having such a contact
Inventor: BOWLEY THOMAS WILLIAM
IPC: H01R12/72
Filed: 1965-04-12
Abstract: 1,103,727. Edge connectors for printed circuit boards. CARR FASTENER CO. Ltd. 25 March, 1966 [12 April, 1965], No. 15462/65. Heading H2E. The contacts of an edge connector 1 each comprise a resilient portion 15 with a pair of spaced blades 16 for engaging printed circuitry on one face of a panel, and a rigid rod 11, one end 13 of which is inclined outwardly and has a pair of lateral projections 14, the opposite end 12 forming a post around which a connecting wire may be wrapped. The contacts are secured in chambers 3, which extend from both sides of a central slot (2) (Fig. 2, not shown) in the insulating body 1, by snap-fitting of the projections 14 behind shoulders 7 and engagement of shoulders 19 on the contacts with recesses in the body, stabilizing ridges 21 being an interference fit with the side walls of the chambers 3. The tips 13a are exposed to provide test points.
Patent GB-1284041-A (GB)
Title: Spring brake actuator
IPC: F16D65/14
Filed: 1971-05-18
Abstract: 1284041 Fluid pressure brake actuators BENDIX CORP 18 May 1971 [18 May 1970] 15498/71 Heading F2F An actuator for brakes in which the brakes can be spring applied and fluid pressure released has a first piston 22, in a bore 14, by which the brakes can be applied, resilient means in the form of conical washers 40 biasing the piston in a brake-applying direction, a second piston 46, for releasing the brakes by fluid pressure, connected to the first piston by a non-retractable abutting connection comprising two members 34, 52 movable parallely to the brake applying direction with respect to one another on rotation therebetween and a member in the form of a hexagonal nut 50 by means of which such rotation can be applied to compress the washers 40 and release the brake.
Patent GB-461792-A (GB)
Title: Method of producing hydrogen peroxide
IPC: C01B15/03
Filed: 1936-06-03
Abstract: <PICT:0461792/III/1> In a process in which hydrogen peroxide is produced by distilling solutions which flow down the inner walls of heated tubes and withdrawing the vapour evolved at the bottom, vapour is drawn off, in addition, at the top ends of the tubes.  The solution is fed from the supply pipe 1 to heated tubes 3.  A separator 7 for gas and vapour is connected to each end of the tubes 3 by connections 6 and 8.  Vapour is withdrawn from the separator 7 through conduit 13.  The liquid in separator 7 may be diluted by the residue from the whole distillation or by solution from pipe 1 and is then led to a further distilling tube 3.  The residue of distillation from this tube collects in chamber 14.  Regulators 5 are provided in the vapour passages in order to vary the proportion of vapour withdrawn from each end of any tube and thus to vary the rate of flow of liquid therein.
Patent GB-203383-A (GB)
Title: Improvements in or relating to the production of refined copper from copper oxide
IPC: C22B15/00
Filed: 1922-06-02
Abstract: 203,383. Perkins, W. G., and Beasley, W. H. June 2, 1922. Dry processes of extracting copper.-Copper is obtained from finely-divided copper oxide by heating the oxide in a reducing atmosphere so as to produce copper in a finely-divided state, cooling the copper in a reducing atmosphere and subsequently pressing it into cakes, blocks, or briquettes so that it may be melted in a refining furnace with a minimum loss from dusting or oxidation. The copper oxide employed, preferably obtained by precipitation from an ammoniacal solvent of copper in a manner such as is described in Specifications 185,242 and 190,246, ie heated in a muffle furnace, in an atmosphere of coal gas or other reducing gas, to a temperature, such as 500 C., which is preferably below the melting-point of copper. After being cooled in a reducing atmosphere the finely-divided copper is introduced into a briquetting press and subjected to a pressure of about 1¢ to 2 tons per square. inch without the addition of any binding medium. Specification 5564/83 is also referred to.
Patent GB-1101902-A (GB)
Title: Improvements in or relating to elevator mechanism for apparatus detecting and measuring radioactivity
IPC: G01T7/08
Filed: 1966-04-07
Abstract: 1,101,902. Measuring radio-activity. PACKARD INSTRUMENT CO. Inc. April 7, 1966 [April 13, 1965], No.15636/66. Heading G1A. Sample containers are moved to and from a well in apparatus for measuring radio-activity on a platform on an elevator shaft, the platform having a centering device for locating the container to prevent contact with the sides of the well. The invention is applied particularly to apparatus as described in Specification 1, 041, 413 where sample phials containing a scintillator are lowered successively into a cylindrical bore in a transparent member which transmits the light from the scintillations to photo-multipliers. Its object is to prevent the generation of electro-  static chargers which produce spurious results. The centering device is a washer having a slightly dished central portion with upstanding arms which are urged inwardly to locate the phial when the central portion is compressed by the elevator mechanism.
Patent GB-856663-A (GB)
Title: Fittings for retaining cylindrical members in place
IPC: F16L5/10
Filed: 1958-05-15
Abstract: 856,663. Carrying conductors through partitions. FAMELY, M. May 15, 1958 {Oct. 9, 1957], No. 15656/58. Class 36 [Also in Group XXVIII] A fitting for securing a cylindrical member such as an electrical conductor 25 in an orifice 22 comprises a male member 18 which is forced into a female member 19, having a conical bore, the end of the male member, protruding from the female member, flowing radially to interlock the two members. Members 18 and 19 can be of any material, e.g. a plastic such as nylon and the taper 17 of member 19 and the member 18 also produces deformation of the wall of the tube 25 when the latter is deformable.
Patent GB-1208867-A (GB)
Title: Rolling mills
Inventor: BOND HARRY LAURENCE FRED
IPC: B21B29/00
Filed: 1967-04-06
Abstract: 1,208,867. Rolling. DAVY & UNITED ENG. CO. Ltd. 8 April, 1968 [6 April, 1967] No. 15829/67. Heading B3M. A rolling mill housing incorporates two pairs of posts 13, 14, a base, and a top 18 which is vertically displaceable relative to the posts, and which carries extensions 46 for use in bending an uppermost roll 22. Similar extensions 54 serve for bending a lower roll 22, the extensions each carrying yokes 48 or 55 which act on the roll ends and are hydraulically operated by cylinders 47 or 53. Further cylinders 43 control the spacing of the top 18 from the posts and may form part of an automatic gauge control system. The top 18 can also be adjusted by nuts 35, which co-operate with threaded bolts 34, and are rotatable by motors 41. The bolts are either anchored to the top of the posts 13, 14, or are extensions of elongated rods which pass both through the posts and the base 12 and which can be pretensioned. In the former case, the pairs of posts are cast integrally as closed loops. Straps 56, which are normally bolted to the posts, are then cast, together with a base section with the posts.
Patent GB-553967-A (GB)
Title: Improvements in or relating to radio frequency circuit arrangements comprising amplifiers feeding into a common load, for example, a radiating antenna
IPC: H03F1/54
Filed: 1941-12-09
Abstract: 553,967. Valve amplifying circuits. STANDARD TELEPHONES & CABLES, Ltd., and MADDOCK, A. J. Dec. 9, 1941, No. 15857. [Class 40 (v)] A plurality of valve amplifiers supplied by separate HT sources, connected in parallel to a common load circuit such as an aerial, and excited by a common oscillatory source, are provided with a resistance network associated with the several HT sources and so arranged that, should one of the HT sources fail, a prohibitive bias interrupts the oscillatory feed from the exciting source. The object is to prevent damage owing to the inoperative valve acting as a rectifier of oscillations fed to it from the operative valves through the load coupling. As shown in the Figure for two valves having separate HT supplies +A and +B, these terminals are connected through high resistances R<SP>1</SP>A, R<SP>1</SP>B, to opposite corners 2, 4 of a resistance bridge. The other corners 1, 3 of the bridge are respectively earthed and connected through a negative bias source to the grid of a valve V of the unit by which the amplifiers are fed with oscillatory current. With both HT supplies A, B at normal voltage, the terminals 2, 3, 4 are all at the same positive voltage above the earth point 1 and the valve V is operative. Should either source fail, the voltage at 3 falls, and the valve V assumes a prohibitive bias. The Specification describes the relative values of the bridge resistances for a more general case using m and n amplifiers of which m have their HT supplies connected to the corner 4 and n to the corner 2 of the bridge Fig. 3 (not shown).