baber/WOPTO huggingface dataset:
Patent GB-1206646-A (GB)
Title: Improvements in sterilising articles
Inventor: FOSTER MICHAEL
IPC: A61L2/20
Filed: 1967-11-01
Abstract: 1,206,646. Sterilization process. G. U. STERILIZERS Ltd. 31 Jan., 1969 [1 Nov., 1967], No. 49617/67. Heading A5G. Articles are sterilized by a volatile sterilizing agent, e.g. formaldehyde, by placing them in a chamber maintained at 40‹-80‹C., subjecting them to a partial vacuum and allowing the sterilant to evaporate into the vacuum. Thereafter, the vacuum is released and subsequently recreated to remove the sterilant from the surfaces of the articles. Suitable apparatus for carrying out the process is discribed.
Patent GB-1195596-A (GB)
Title: Improvements in and relating to Article Conveying Apparatus
Inventor: HODGE TREVOR ARTHUR
IPC: B65G51/03
Filed: 1967-11-02
Abstract: 1,195,596. Pneumatic flotation conveyers. R. E. FUTER. 31 Oct., 1968 [2 Nov., 1967], No. 49943/67. Heading B8A. A pneumatic flotation conveyer comprises a conveying surface 11 formed with at least one band of apertures and mounted on a plenum chamber 10, the apertures being formed such that the gas flow therethrough has a component longitudinally of the surface and the total width of the band or bands of apertures being not greater than half the width between guide rails 15. The guide rails are supported by brackets 14 which are adjustable to vary the distance between the rails. As shown in Fig. 1, the apertures are formed as louvres. In a second embodiment, Fig. 5, the apertures 24 are formed in a surface 22, which underlies imperforate strips 23, and are formed by depressing triangular shaped portions of the surface after making V-shaped incisions. The guide rails are replaced by walls 25 formed with apertures for the escape of the gas.
Patent GB-1000470-A (GB)
Title: Vacuum pumping arrangement
Inventor: WINDSOR EDWARD ERIC
IPC: H01J9/38
Filed: 1963-12-18
Abstract: 1,000,470. High vacuum pumping systems. MULLARD Ltd. Dec. 18, 1963, No. 50000/63. Heading F1N. In a method of forming a vacuum within a container C by exposing the gas therein to gasabsorbing elements A, B, the system comprising the container C and the elements A, B is initially flushed with a pure gas such as nitrogen introduced through a pipe K and extracted through a pipe L whilst at the same time heating the elements A, B so as to inhibit absorption of the gas by the elements, and then refrigerating element A and heating the remainder of the system so that element A absorbs gas, sealing the element A at G, and finally refrigerating and sealing element B to thereby absorb further gas from the container C. A plurality of elements may be connected in series wherein each element is caused to absorb gas and is subsequently sealed in the manner described. A water vacuum pump may be connected to the pipe L for partly evacuating the container C before successively refrigerating the elements. The elements A, B are preferably pure zerlite in pellet form or coated on a plurality of nickel tapes wound into spirals.
Patent GB-1357395-A (GB)
Title: Adjusting the size of the focal spot of an x-ray tube in accordance  with the tube loading
IPC: H05G1/52
Filed: 1971-10-28
Abstract: 1357395 X-ray tubes PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 28 Oct 1971 [31 Oct 1970] 50166/71 Heading H2H The size of the focal spot in an X-ray tube 9 is adjusted in accordance with the tube loading by means of a supplementary electrode 11 which is connected to a movable tap 7 on a control transformer 2b, 2a coupled to the tube anode and cathode, means being provided for varying the tap position in accordance with variations in the tube loading. In a tube 9 with an extra electrode 11, which may be constructed as specified in patents 478,926 or 839,945, the spot size is proportional to the ratio (voltage between cathode and electrode/voltage between anode and electrode) which is varied by adjustment of the tap 7 linking the transformer 2a, 2b to a high voltage transformer 4a, 4b. If the apparatus is such that the tube current and voltage are independently adjustable then the tap 7 can be arranged to be controlled by a voltage which is the sum of the voltages from two logarithmic potentiometers (one for voltage and one for current) so that the tap position is proportional to the logarithm of the power. In the case where, as shown, the tube voltage reamins constant as the current varies, then a control knob 10 for varying the current is mechanically linked to means for moving the tap.
Patent GB-1534863-A (GB)
Title: Gas-heated steam generators
IPC: F22B1/06
Filed: 1975-12-08
Abstract: 1534863 Steam generators SULZER BROS Ltd 8 Dec 1975 [6 Dec 1974] 50222/75 Heading F4A A gas heated steam generator comprising a cylindrical chamber 4 having a gas inlet in the wall and enclosing a heat exchanger 13 comprising a preheater section 15, evaporator section 16 and pre-superheater section 17 and a final superheater 21, and also enclosing a reheater 25 which comprises U-tubes enclosed in a boxstructure which has apertures formed by walls 62a, 62b, 63a, 63b which direct the heating gas in separate opposed streams through the respective legs 27, 28 of the reheater. Thereafter the gases flow round or through (Fig. 6, not shown) the portion of the box enclosing the tube portions 29, through chamber 67, sleeve 80 chamber 49, shaft 20, down through the sections 17, 16, 15 through opening 39 in casing 31 and exit at the top. The heat-exchanger 13 comprises helically wound tubes 12. The casing 31 is supported on resilient strips 33 by a ring 35 carried on the flange 36. The box sleeve 80 is slidable in a casing sleeve 48. The spacing between the tubes of legs 27, 28 may decrease in the direction of gas flow and the spacing between the tubes of legs 28 may be less than 27 (Fig. 5, not shown). The square formation of the tubes 27, 28 at the plates 8b, 9b may be modified as the tubes enter the end 61 to reduce the diameter of the circumscribing circle (Fig. 4, not shown). The upper and lower parts of the generator are separable for transportation.
Patent GB-1441389-A (GB)
Title: Pumps
IPC: F04F1/02
Filed: 1972-11-01
Abstract: 1441389 Fluid regulation BRITISH NUCLEAR FUELS Ltd 30 Oct 1973 [1 Nov 1972] 50292/72 Heading G3H [Also in Division F1] The inlet and outlet of a pump chamber 1 comprise fluid diodes 3, 5, each of which is of the vortex type shown in Figs. 2, 3.
Patent GB-1089440-A (GB)
Title: Method of transmitting information and devices for carrying out this method
Inventor: REEFMAN PIETER DAVID CORNELIS
IPC: H04Q3/42
Filed: 1964-12-11
Abstract: 1,089,440. Circuits employing multistable magnetic elements. DE STAAT DER NEDERLANDEN, TEN DEZE VERTEGENWOORDIGD DOOR DE DIRECTEUR-GENERAAL DER POSTERIJEN, TELEGRAFIE EN TELEFONIE. Dec. 11, 1964 [Dec. 31, 1963], No. 50660/64. Heading H3B. Pulses to be counted are supplied to a winding 1 on a multistable magnetic core 3 and corresponding pulses induced in a winding 2 are supplied to a load A which responds only to pulses having an energy content corresponding to that of the input pulses. As shown, load A is a reed relay controlling contacts a in the input line to a further counter ET. Pulses counted into core 3 are simultaneously counted into counter ET. The arrangement is such that a train of pulses of the opposite polarity causes core 3 to step back to zero and causes the count in ET to be read out. Surplus read out pulses supplied to core 3 drive the core further into saturation and relay A discriminates against the low energy pulses thus produced. In an alternative mode of operation relay A is disconnected while pulses are counted in and is then reconnected. The complement of the stored number is then transmitted to ET when a further train of pulses of the same polarity is supplied to winding 1. A resistor may be connected in parallel with the relay to vary its sensitivity.
Patent GB-1118770-A (GB)
Title: Optical flint glasses of high dispersion
IPC: C03C3/091
Filed: 1965-11-30
Abstract: An optical flint glass of high dispersion consists primarily of silicon dioxide and boric anhydride as glass formers, and also contains titanium dioxide, at least one alkali oxide and aluminium oxide, the content, in weight percentages, of silicon dioxide being higher than 30 and that of boric anhydride being lower than 5, the total content of glass formers being between 31 and 45, the content of aluminium oxide being up to 20, and the sum of titanium dioxide and aluminium oxide amounting to at least 30, the balance, if any, consisting of other compatible constituents.  The alkali oxide is preferably sodium oxide.  There may also be added one or more or all of the oxides of Pb, Bi, Zn, Nb, Ta, W, Zr, Cd up to a total of 10% by weight, with small amounts of As2O3 or Sp2O3 for decoloration.
Patent GB-1466629-A (GB)
Title: Device for applying a layer of viscous substance upon a travelling belt
IPC: B29C39/24
Filed: 1975-12-11
Abstract: 1466629 Glue applicator STORK BRABANT BV 11 Dec 1975 [10 Jan 1975] 50774/75 Heading D1L In the application of glue to a travelling belt in a rotary screen printing machine, the applied glue is smoothed by means of a curved squeegee blade 4 with its convex side turned to the direction of travel v of the belt. The glue is applied by a pair of staggered transverse tubes 2 provided with perforations 3, one of the tubes being slidable transversely to vary the width of the applied glue layer. The squeegee blade is pivotally supported by three threaded rods (14) [Fig. 3 (not shown)] which are adjustable to vary the clearance with the belt. The tubes and squeegee blade are mounted on a frame (5) [Fig. 1 (not shown)] which is pivotable at (6) towards and away from the belt by means of supporting member (9) which is adjustable in height.
Patent GB-1358289-A (GB)
Title: Signal distributing systems
IPC: G01R31/28
Filed: 1971-11-02
Abstract: 1358289 Data transmission; distributers INTERNATIONAL COMPUTERS Ltd 19 Oct 1972 [2 Nov 1971] 50787/71 Heading H4P All paths between the input 10 of a two stage distributer and respective outputs 31, 32 &c. are arranged to have identical electrical characteristics to ensure uniformity of output signals. These outputs constitute test signals for integrated circuits or other devices (not shown) which are temporarily connected thereto. A board 1 carries four mercury-film relays 12 which distribute the input signal at 10 to four groups of four relays 14, 16, 18, 20, the connections between the relays, and to the outputs, being 50 ohm low loss transmission line. Two or more boards may be combined into a single assembly, and a corresponding output 33, 34 of each of the two boards shown may be connected through a further relay on a board 30 to a common output 27. The four relays of a second stage group such as 15 on board 2 are controlled by respective inputs (Fig. 3, not shown) these inputs being additionally all supplied, through respective diodes (D1), to the associated relay (13) of the first stage.
Patent GB-1203734-A (GB)
Title: Improvements in or relating to identification devices
Inventor: WINSTON EMANUEL ABRAHAM
IPC: G09F3/18
Filed: 1968-10-28
Abstract: 1,203,734. Label holders. E. A. WINSTON. 28 Oct., 1968, No. 50956/68. Heading B8F. An identification device comprises a transparent or translucent holder 14, e.g. of polyethylene, and a releasably retained reflective cover 12, e.g. of glass or plastics, which holds an inscribed identification member 16 in place. The cover 12 may be internally faceted to increase light reflection. The holder 14 and cover 12 may be engaged by a groove 26 and a rim 36.
Patent GB-1523926-A (GB)
Title: Steel alloy and cutting tool prepared therefrom
IPC: C22C38/12
Filed: 1975-12-12
Abstract: 1523926 Cutting tool UDDEHOLMS AB 12 Dec 1975 [18 Dec 1974] 51095/75 Heading C7A A cutting tool of composition:-  the structure of the tool may consist of a martensitic matrix having a grain size of 5-70 Ám, determined austenite grain size, containing 5-15 volume per cent of an intracrystalline, homogeneously distributed, finely dispersed Fe, Co, W and/or Mo intermetallic compound and between the grains of the matrix 20-30 volume per cent of a primarily precipitated phase mainly consisting of the same intermetallic compound and having a predominant grain size of 1-2 Ám. The tool may be prepared by finely dividing and cooling a melt of the above composition under non- oxidizing conditions to produce a fine powder e.g. by atomizing a melt using nitrogen gas jets, hot compacting the powder to an ingot e.g. by hot isostatic pressing at 1200-1250C, hot working the ingot to a blank e.g. by rolling or forging at 1,000C to 1200C, cooling the blank slowly to 500C and then annealing at 875-910C for 10 to 15 hours, cooling, machining to form the cutting tool, solution annealing at 1200-1350C and quenching either to 250-350C followed by tempering at least once at a temperature of 550- 700C for 2-5 hours or quenching in oil to room temperature further working the tool and tempering at least once for 2-5 hours at 550-700C.
Patent GB-1389896-A (GB)
Title: Selective display devices
IPC: G06K17/00
Filed: 1972-11-07
Abstract: 1389896 Indicating variable information M SCHIMMERLING 7 Nov 1972 [10 Nov 1971] 51258/72 Heading G5C In a selective index device, detachable pivoting flaps 1 bearing an information zone 20 and a zone 13 with coding slots such as 15, are mounted in a frame 6 between uprights 5, the flaps being pivoted from readable to a non- readable position by the action of lugs 26 on bars 25 between uprights 27 vertically movable within and carried by a manually horizontally shiftable selector frame 22 mounted behind frame 6. Frame 22 is pre-set for a certain lateral travel by means of packing pieces on frame 6, this travel aligning the actuating lugs 26 at a certain coding station, a subsequent vertical shift of bars 25 thereby pivoting all flaps 1 which are not slotted at that station.
Patent GB-1475095-A (GB)
Title: Sheet separating and feeding apparatus
IPC: B65H1/20
Filed: 1974-11-27
Abstract: 1475095 Separating sheets XEROX CORP 27 Nov 1974 [20 Dec 1973] 51381/74 Heading B8R In response to the detection of the failure of friction separator belt 12 to separate a sheet from the bottom of a pile 20, a roller 8 is pivoted upwards to increase the area of the belt contacting the pile and so increase the effectiveness of the separator. The movement of roller 8 also increases tension in the belt and so increases the pressure of engagement of retard pad 22 with the belt. The detectors which lie forward of the pile may be mechanical feelers or photoelectric devices. The pressure of the pile on the support and the adhesion between adjacent sheets may be relieved by air blast through apertures 34 in the support.
Patent GB-1345802-A (GB)
Title: Calibration of tubes
IPC: B21C37/30
Filed: 1971-11-08
Abstract: 1345802 Drawing; sizing bores CHABAS & BESSON SA 8 Nov 1971 [6 Nov 1970] 51790/71 Headings B3P B3H and B3Q The inner or outer surface of a tube 22 is calibrated by a tool having a hard working surface which has a curvature in axial section, the length of the curve in contact with the tube surface being small compared with the transverse dimension of the tube surface and the radius of curvature of the curve being small compared with the radius of curvature of the tube surface. The latter is displaced by a distance which is small compared with the thickness of the tube wall, the other tube surface being unconstrained in the region of the tool. The angle between the straight line joining the points where the tube surface comes into and leaves contact with the tool and the direction of motion of the tool may be less than 12 of 12-20 degrees. In one embodiment, Fig. 8, a steel tube 22 to be calibrated, together with a ring 23 and half shells 24, are mounted on a shaft 11 which is secured to a piston-rod 4 of an hydraulic cylinder 3. The cylinder 3 is actuated to push the tube 22 through a die 15 which has an outer conical surface and an inner working surface defined by a rounded shoulder having a radius of 25-35 mm. When the outer surface of the tube 22 has been drawn by the die 15, the half shells 24 are removed, the ring 23 is pushed back and a mandrel 25, Fig. 11, having a rounded working surface with a radius preferably between 3-6 mm., is screwed into the end of the shaft 11. The rounded surface of the mandrel 25 may be other than circular such as elliptical or oval. Members 18 are pivoted about pivots (19) (Fig. 3, not shown) into a closed position 30 that when the mandrel 25 is pulled by the piston rod 4 through the bore of the tube 22 to calibrate its inner surface, the one end of the tube 22 engages the members 18. The process may be repeated using a different mandrel 25. In another embodiment, Fig. 15, the tube is calibrated by drawing it between a drawing die and a cylindrical mandrel 31 having a calibrating tool 33 connected to it.
Patent GB-1125396-A (GB)
Title: Improvements in or relating to diazotype materials
Inventor: WELCH WALTER JAMES
IPC: G03C1/58
Filed: 1965-12-08
Abstract: 1,125,396. Photographic diazotype materials. GENERAL ANILINE & FILM CORP. Dec. 8, 1965 [Dec. 9, 1964], No. 52171/65. Heading G2C. A heat-developable, two-component diazotype material comprises a support coated with a layer containing a diazonium compound, an azo coupler which produces a blue dye with the diazonium compound, a 2-alkyl resorcinol in which the alkyl group has 1 to 10 carbon atoms as a second coupler which produces a yellow dye with the diazonium compound and a compound which releases alkali on heating. The first coupler may be diresorcyl sulphide or sodium 6, 7-di-hydroxynaphthalene- 2-sulphonate and the alkali generator may be sodium of potassium trichloracetate. The lightsensitive layer may also contain silica, formamide and polyvinyl alcohol or polyvinyl acetate and may be coated on a support of rayon, cotton cloth, starch-filled cloth or polyester.
Patent GB-1332007-A (GB)
Title: Multi-spindle lathes
IPC: B23B3/30
Filed: 1970-11-04
Abstract: 1332007 Multi-spindle lathes SOC ANON SECOR 4 Nov 1970 [7 Nov 1969] 52573/70 Heading B3T A multi-spindle lathe comprises a frame 1 including a headstock 2 in which are mounted rotatable and axially slidable work spindles 3, 3A, and tool slides 13, 14, 15, the latter being disposed on the headstock, and slides 14 and 15 being slidable over the entire length of the  headstock. The upper slide 13 carries two crossslides 18, 18a one on each side of the vertical plane of symmetry of the lathe and the lower slides 14 and 15 support cross slides 22 and 23 respectively. The work spindles 3, 3A are mounted within hollow shafts 4, 4A respectively in which they are slidable by way of keys 7 and rotatable with the shafts by way of gearing 8 from a drive motor 12.
Patent GB-1418215-A (GB)
Title: Treatment of waste material
IPC: C09K17/12
Filed: 1973-11-13
Abstract: 1418215 Treating waste material ENVIRONMENTAL SCIENCES Inc 13 Nov 1973 52702/73 Addition to 1337301 Heading C3N A method of treating liquid or semi-liquid waste material to render it non-polluting and fit for ultimate disposal, comprises mixing an aqueous solution of an alkali metal silicate with the waste material and Portland cement to cause the silicate and Portland cement to react with each other, the proportion of the silicate and the Portland cement being such that the reaction converts the mixture into a solid with the waste material entrapped in the solidified silicate. In a modification the Portland cement may be contained in the waste material itself. The amount of silicate solution plus the amount of Portland cement may be 10% or less of the total volume of the mixture or of the volume of the waste material. The specific examples refer to the treatment of (1) sludge from the waste water treatment plant of a steel mill and (2) waste and sludge from the waste treatment plant of an automotive assembly operation. The materials contained in such wastes are specified.
Patent GB-1282233-A (GB)
Title: Blast furnace tuyere
IPC: C21B7/16
Filed: 1970-11-05
Abstract: 1282233 Blast furnace tuyeres AUGUST THYSSEN-HUTTE AG 5 Nov 1970 [ 5 Nov 1969 and 25 July 1970] 52739/70 Heading F4B A blast furnace tuyere comprises a doublewalled nozzle part 4 within which coolant is circulated, and a flow guide 20a, 20b occupying substantially the whole of the space between the outer and inner walls at the outlet end so that a narrow gap is left to form a coolant passage. The flow guide may have a thin stem 20a and an enlarged part 20b. Ribs 23 may be formed on the nozzle walls, Fig. 2. Water enters the space 18 through an annular chamber 10 and holes spaced round the nozzle periphery, and leaves a chamber 19 through spaced holes and an inner annular chamber 11. The flow path round the enlarged flow guide part 20b is of constant cross-sectional. The nose part of the nozzle may be made detachable from the barrel part, a narrow passage of constant cross-section being formed for coolant flow in the nose part. The flow guide may be formed of such material that it may be inserted and then inflated by air or hydraulic fluid, or by settable plastic material. The inflatable flow guide 10 may be of rubber, glass reinforced plastic or soft-copper; and is located in its expanded state by ribs 62, Fig. 8.
Patent GB-1067359-A (GB)
Title: Improvements in or relating to radiant electric heaters
IPC: F24C7/06
Filed: 1964-12-30
Abstract: 1067359 Electric radiant heaters S R MACDONELL 30 Dec 1964 52872/64 Headings F4W and W45D An electric radiant heater comprises curved reflectors 4 in which are disposed heating elements in the form of a continuous metal ribbon 5 running between terminals 6, 9 through openings 7 in an insulating plate 10 and through hook-shaped insulators 8 mounted on a spring-tensioned plate 17 which maintains the ribbon 5 constantly taut. The plate 17 may be replaced by a plurality of coil-springs each arranged around the body of an insulator 8 between its head and the wall 3. The reflectors 4 may be semi-circular, parabolic or hyperbolic in cross-section and may be facetted to diffuse the reflection. The elements may be switched or otherwise arranged to provide a threeheat control.
Patent GB-1515890-A (GB)
Title: Apparatus for and process of extruding plastics material
IPC: B29C48/52
Filed: 1975-12-30
Abstract: 1515890 Constant output screw extruder STERLING EXTRUDER CORP 30 Dec 1975 [6 Jan 1975] 53177/75 Heading B5A Extrusion apparatus, having a substantially constant output over a range of screw speeds and die pressures, comprises an upstream zone in which the bore of the barrel 11 has longitudinally extending grooves 13, and within which the screw 14 is a close fit and has a single thread 15 whose depth decreases along its length and is of a constant pitch less than its diameter, and a downstream zone in which the barrel bore is ungrooved and within which the screw 14 has a greater clearance and has a three start thread 16 of a pitch which is at least two times the diameter of the bore. The screw in the upstream zone comprises an upstream portion of uniform depth, followed by portions of decreasing and then of constant depth to effect a compression of 2 to 3À5, and the barrel bore in the downstream zone is of larger diameter than in the upstream zone. Preferably, in the upstream zone the barrel is 3/8 to 5/8 of the total length of the bore, the grooves are of crescent shape section and of a depth less than 0À2 inches, and the pitch of the thread 15 is at least 0À5 times the diameter of the bore. Preferably the threads 16 in the downstream zone have a diameter of 0À050 to 0À100 inches less than that of the bore, to provide for back flow and mixing of the material being extruded. The extruder is provided with a die 26, and heater bands 24 controlled by thermocouples 25 and a source of electrical power. The extruded material may comprise polypropylene, polyethylene, terephthalate, polycaprolactum or polyoxymethylene resins, with the examples relating to polytetrafluoroethylene-hexafluoropropylene copolymer and polyvinylchloride, using apparatus of specified numerical parameters.