baber/WOPTO huggingface dataset:
Patent GB-1475015-A (GB)
Title: Apparatus and method for the detection of microbial pathogens
IPC: G01N33/48
Filed: 1974-08-22
Abstract: 1475015 Centrifuge tubes J K and SUSIE L WADLEY RESEARCH INSTITUT & BLOOD BANK 22 Aug 1974 [30 Jan 1974] 36933/74 Heading B2P [Also in Division G1] A device for use in the treatment of a liquid sample with another liquid and the centrifugation of the product comprises an enclosed elongated vessel having a first end and a second end each end having an injectable closure means, a chamber 12 which is at less than atmospheric pressure, an enclosed end chamber 16a containing the other liquid and communication with one of the injectable closure means 16, and injection needle means 34 positioned within end chamber 16a for passing fluid from the end chamber through closure means 16 as shown and into the evacuated space. In use for the determination of microbial pathogens in blood, the evacuated space may initially contain a "liquid filter medium" which may comprise a sugar in concentration at least 40% in a pH 6.0 to 7.0 buffer containing a gel material, and the liquid in end chamber 16a may be a lysing agent which is non-toxic to micro organisms, for example a non-toxic solution of saponin. In use, the vessel is chilled to solidify the filter medium, push button member 32 at the end of stylus 34 is pressed to force the end of the stylus through closure means 16 to allow the lysing liquid to flow into the low pressure chamber 12, a blood sample is injected through closure means 14 using syringe 50, the vessel is warmed to a temperature which will liquify the filter medium but not destroy microbial pathogens then centrifuged, when the microbial pathogens pass into the filter medium layer. Either the filter medium layer or the remaining sample layer may then be removed using syringe inserted through closure means 14. Specification 1458147 is mentioned.
Patent GB-1179318-A (GB)
Title: Improvements in or relating to Automatically Producing Prints from Strip Film.
Inventor: PETZOLD WOLFGANG
IPC: G03B27/80
Filed: 1967-08-11
Abstract: 1,179,318. Exposure control. PENTACON DRESDEN KAMERA-UND KINOWERKE, VEB. Aug. 11, 1967, No.37017/67. Headings G2A and G2C. A method of automatically producing photographic copies from images arranged in strip form on carriers comprises the steps of examining the negatives to ascertain exposure correction values; applying these values in the form of optically, electrically, magnetically, pneumatically or mechanically explorable marks to a control band fastened to one long edge of the carrier by a detachable adhesive connection; and passing the carrier and its attached band through a copying apparatus where the marks are scanned by means within the apparatus and the appropriate graduation and/or colour corrections are made. Preferably magnetically explorable marks are used.
Patent GB-821524-A (GB)
Title: Improvements in or relating to resistances
IPC: H01B3/00
Filed: 1955-12-29
Abstract: 821,524. Fixed resistors. SOC. LE CARBONE-LORRAINE. Dec. 29, 1955 [Jan. 24, 1955], No. 37252/55. Class 37. Improved cooling is produced in a solid composition type resistor by providing channels in the body of the resistor, thus increasing the area of contact with the surrounding medium. The resistor, which may be of the carbon and clay or of the resins and carbon type is moulded, pressed or extruded and then sliced into the desired sizes. External longitudinal channels may be provided, Fig. 1, if desired in combination with an axial bore, Fig. 2, which may also be channelled, as shown in Fig. 3. Additional cooling may be obtained by placing the resistor in a current of cooling fluid. In a further modification channels perpendicular to the direction of current flow through the resistor are provided.
Patent GB-368402-A (GB)
Title: Improvements in or relating to buildings or chambers for acoustic purposes
IPC: E04B1/82
Filed: 1930-12-10
Abstract: 368,402. Modifying acoustic properties of broadcasting and like studios. ELECTRICAL RESEARCH PRODUCTS, Inc., 195, Broadway, New York, U.S.A.-(Assignees of MacNair, W. A. ; 376, Prospect Street, East Orange, New Jersey, U.S.A.) Dec. 10, 1930, No. 37255. Convention date, Dec. 12, 1929. [Classes 20 (i) and 20 (ii).] Acoustic studios, auditoriums, and the like are provided with curtains or coverings of different sound-absorbing materials so proportioned and arranged that the reverberation period for pure tones within the middle range of audible frequencies is constant, and is greater for all tones outside the range. The middle range is approximately between 700 and 4000 cycles per second. According to one construction, shown in plan, a layer 12 of insulating material is arranged around the studio between eight and twelve inches from the four walls 7 .. 10 and also from the ceiling. To the face of the layer 12 a layer of burlap is applied, to improve the appearance of the studio. In front of the layer 12 and spaced therefrom, adjacent the walls 7, 9 only, are arranged layers 14 of a textile material, such as Monk's cloth. This layer has a gathering of approximately 25 per cent of its total area. By the use of a reverberation meter, the layers 12, 14 are so arranged that the acoustic properties of the studio conform with those indicated above. Other materials which may advantageously be employed are (1) rock wool loosely packed between wood studs and covered with 40 x 44 count cheese cloth over which is placed wire gauze or wire netting, (2) blast hair blanket which is hung like a curtain against the walls, (3) the material registered under the name of Celotex, and (4) rough finished lime plaster carried on wooden laths fixed to wooden studs.
Patent GB-843850-A (GB)
Title: Film treatment
Inventor: NEW NORMAN
IPC: C08J7/12
Filed: 1957-11-29
Abstract: A dull or matt surface is formed on polyethylene terephthalate film by contacting a surface of the film with an aqueous solution of sodium hydroxide, or, preferably, potassium hydroxide, until at least the surface lustre of the film has been removed.  The film may be immersed in a 50% by weight aqueous solution of potassium hydroxide at 120-130 DEG C. for one minute.  The concentration of the potassium hydroxide solution may be 30-60% by weight and the treating temperature 90-130 DEG C.  The film may be treated on one or both surfaces, one surface, in the former case, being protected by causing it to adhere temporarily to a suitable supporting surface.  In an example, a piece of crystallised polyethylene terephthalate film 0,005 inch thick is immersed for 1 minute in a 50% by weight solution of potassium hydroxide in water at 120 DEG C., the layer of potassium terephthalate thereby formed on the surface of the film is washed off with water, and the film is finally washed with acetone and dried. The treated films may be used for writing on with pencil or ink, as tracing cloth, as a protective coating when laminated to other materials and for improving the bond strength of laminates that include a polyethylene terephthalate film layer.
Patent GB-1479925-A (GB)
Title: Method and apparatus for determining the concentration of one or more than one gaseous component in a mixture of gases
IPC: G01N27/12
Filed: 1974-08-24
Abstract: 1479925 Measuring gas concentration electrically WESTFALISCHE BERGGEWERKSCHAFTSKASSE 24 Aug 1974 37347/74 Heading G1N A method, for determining the concentration of carbon monoxide or methane in a mixture of gases, involves use of a metal oxide semi-conductor (MOS) 2 having a heating coil 7 energized from a current source 8 though a switch 9 actuated by a control 10 so that the temperature of the semiconductor is varied between two given temperatures at predetermined intervals. For example the lower temperature is above -20‹C and the higher temperature is below 800‹C. In a preferred embodiment the lower temperature is ambient temperature. The relay 11 is actuated to be open when the switch 9 is closed and vice-versa. Since the speed of reaction of methane and other hydrocarbons on the surface of the oxide semi-conductor is lower at low temperatures than is that of carbon monoxide, the latter is indicated at temperatures in the normal ambient range whilst at higher temperatures the variation in resistance of the semi-conductor is determined mainly by methane. In an alternative embodiment Fig. 2 (not shown) a permanently heated MOS (16), in parallel with the first (2), is provided for compensation of cross-sensitivity against methane. Alternatively Fig. 3 (not shown), the second permanently-heated MOS may be substituted for the series measuring resistor 3 shown in Fig. 1.
Patent GB-1154348-A (GB)
Title: Improvements relating to Constant-Frequency Vibrators for Time Pieces
IPC: G04C3/06
Filed: 1966-08-23
Abstract: 1,154,348. Springs. PORTESCAP, LE PORTE-ECHAPPEMENT UNIVERSEL S.A. 23 Aug., 1966 [7 Oct., 1965], No. 37627/66. Heading F2S. [Also in Division G3T] A torsion vibrator for a timepiece (see Division G3) comprises at least one flat resilient blade 2 secured rigidly at its two ends 2a to a support member 1, at least one central portion 2b of the blade being twisted to lie in a plane forming an angle with the plane of the rest of the blade. In a second embodiment, Figs. 3, 4 (not shown), two longitudinally offset parallel blades (12) are formed integrally with the support (11) from a single sheet of metal. The blades may be formed with the central portions (22b) aligned as illustrated in Figs. 5, 6 (not shown). Instead of the twisted portions lying in planes at 90 degrees to the plane of the rest of the blade, the central portions may be twisted through 45 degrees in opposite directions. Also, in the embodiment described with reference to Figs. 1, 2 the central portion 2b may be divided into two sections twisted in opposite directions.
Patent GB-913389-A (GB)
Title: Electric switch
IPC: H01H13/08
Filed: 1960-11-02
Abstract: 913,389. Retractive switches. CUTLERHAMMER Inc. Nov. 2, 1960 [Nov. 2, 1959], No. 37650/60. Class 38 (5). A trigger switch for fitting into the handle of a power tool comprises a base member 22 carrying two fixed contacts 25, 26 located as shown, to be bridged by a spring-loaded contact 41 carried in a trigger member 23 which is maintained in sliding engagement with the top surface of the base 22 by means of a box-like frame member 24. Two projecting parts 23c of trigger member 23 move in corresponding respective slots 24g in the top of frame 24 and limit the travel of the trigger in each direction. A spring 40 urges the trigger outwardly and an insulating ball 42 is urged by the spring 43 of contact 41 to engage in hole 24h or 24i respectively to give positional feel to the trigger operation. The frame member 24 is attached to the base 22 by apertured projecting portions 24c and 24d entering slots 39 and 38, respectively, wherein wedge-like projections 38a and 39a are engaged by the resilience of portions 24c and 24d. The presence of trigger member 23 prevents compression of the sides of frame 24 which is therefore not removable after assembly. A spring-loaded pin 45 is located in a hole 24j in the frame 24 and carries a pushbutton 46 which is guided in a suitable hole in the tool handle (not shown). Depression of button 46 after operation of the trigger 23 causes a head on pin 45 to lock the trigger until further depression of the trigger allows pin 45 to restore and unlock it.
Patent GB-855695-A (GB)
Title: Composite chromium electroplate and method of making same
IPC: C25D5/14
Filed: 1958-11-26
Abstract: 855,695. Electroplates of chromium and nickel. UDYLITE RESEARCH CORPORATION. Nov. 26, 1958 [Jan. 10, 1958], No. 38138/58. Drawings to Specification. Class 41. A corrosion resistant plating is formed on a base metal by plating with a chromium coating of thickness 0À75 to 5 microns, then a nickel coating of 5 to 50 mics. and finally a thin chromiun plating of 0À12 to 2À5 mics. The treble coating may be applied to iron and steel including stainless steel, aluminium, magnesium, copper, brass, nickel or zinc when preferably a flash coating of copper is first applied. Steel sheet is preferably pre-plated with zinc or cadmium. After the first chromium plate the article is treated with a reducing agent, e.g. sodium sulphate, thiosulphate solution, sugar solution, or ferrous salts. Sequesting agents preventing the depositions of chromium hydroxide may be added, e.g. sodim gluconate or nitrilotriacetate. The nickel plating bath may include brightness e.g. bromal chlorhydrate, 8-methoxy coumarin 0- benzoyl sulphimide. Specification 751,299 is referred to.
Patent GB-911541-A (GB)
Title: Improvements relating to the coating of foundry moulds
IPC: B22C3/00
Filed: 1960-11-07
Abstract: 911,541. Mould materials. GENERAL ELECTRIC CO. Nov. 7, 1960 [Nov. 23, 1959], No. 38179/60. Class 83 (1). A foundry mould is coated with a mixture of a fluid silicone and a finely divided silica, which may be applied, for example, as an aqueous emulsion or in an organic solvent. Specifications 586,187, 586,956 and 794,405 are referred to.
Patent GB-1214642-A (GB)
Title: Aromatic polyimides and precursors therefor
Inventor: DIXON DAVID RODNEY
IPC: C08G73/10
Filed: 1967-08-18
Abstract: 1,214,642. Polyimide bonded laminates; moulding plastic substances. IMPERIAL CHEMICAL INDUSTRIES Ltd. 5 Aug., 1968 [18 Aug., 1967], No. 38220/67. Headings B5A and B5N. [Also in Division C3] Insoluble infusible polymers may be obtained from a mixture of an aromatic tetracarboxylic dianhydride, diester or tetraester with a urethane or urea derivative of an aromatic diamine Z-CO-NH-R<SP>1</SP>-NH-CO-Z<SP>1</SP> or from a similar urea or urethane derivative of an amino-aromatic dicarboxylic anhydride, monoester or diester, Z and Z<SP>1</SP> being -OY or -NYY<SP>1</SP> and Y and Y<SP>1</SP> being aliphatic or aromatic radicals free from terminal or pendant methylene groups which may together with the N atom form a heterocyclic ring. A prepolymer may be formed by heating at 120‹ C. or above a melt, slurry or solution of the reactants. Fillers, e.g. preformed polyimide powder, glass, asbestos, carbon or metal fibres, abrasives or solid lubricants, e.g. graphite or molybdenum disulphide may be incorporated with the reactants or prepolymer. The prepolymers may be used as moulding powders, e.g. for the manufacture of high temperature abrasives or self-lubricating bearings, or as solutions for casting, coating or impregnating. The evolution of CO 2  or alcohols during curing in the absence of imposed pressure leads to polyimide foams. Numerous reactants and solvents are mentioned. Moulding and laminating.-The prepolymers may be partly precured to evolve 70 to 95% of the volatile material, milled to a fine powder, e.g. 0À045 mm., moulded at room or slightly elevated temperature and high pressure, e.g. up to 700 MN/m.<SP>2</SP> and then sintered in the free state. The application of this technique is illustrated in Examples 18, 19 and 21. In Examples 20, 22 and 23 asbestos felt, carbon fibre mat and glass cloth, respectively, are impregnated with prepolymer, dried and then laminated by compression moulding. In Example 22 the carbon fibres are aligned longitudinal and transverse in alternate laminµ.
Patent GB-1527614-A (GB)
Title: Sheet transport device for printing presses
IPC: B65H5/22
Filed: 1975-09-17
Abstract: 1527614 Forwarding sheets; conveyers HEIDELBERGER DRUCKMASCHINEN AG 17 Sept 1975 [20 Dec 1974] 38225/75 Headings B8A and B8R A sheet transport device for a printing press comprises a plurality of narrow, circular crosssection conveyer belts 1 and one or more suction chambers 3. The belts, which are arranged laterally of the chamber(s) 3 so as not to mask the suction orifice(s) defined by the chamber(s) are guided around a drive pulley 4 and a return pulley 6, fixed for the suction chamber(s). The device is adjustable laterally of the feed direction on a support 7 for which it is secured by a screw 8.
Patent GB-1326099-A (GB)
Title: Method for the continuous pressure-splitting of fatty compounds
IPC: C11C1/04
Filed: 1970-08-10
Abstract: 1326099 Saponification of fatty compounds BUSS AG 10 Aug 1970 [9 Aug 1969] 38402/70 Heading C2C A method for the continuous pressure splitting of fatty compounds into fatty acids and glycerine by means of an aqueous splitting medium wherein the fatty compound and the splitting medium are pre-heated, fed in counter-flow through autoclaves providing a multistage reactor, and separated at each stage, is characterized in that the fatty compound is brought up to a predetermined circulation pressure before passing through the first stage and that the pressure is maintained by appropriately increasing the pressure of the splitting medium before each subsequent stage.
Patent GB-841765-A (GB)
Title: Improvements in or relating to the manufacture of pure refractory metals
IPC: C22B34/12
Filed: 1956-12-18
Abstract: 841,765. Refining refractory metals. DU PONT DE NEMOURS & CO., E. I. Dec. 18, 1956 [Dec. 21, 1955(2)], No. 38569/56. Addition to 805,406. Class 82(1) [Also in Group XI] In a modification of the method of the parent Specification, spongy or porous particles of refractory metal are heated while distributed out of contact with one another in an inert gas or liquid medium in a high frequency electromagnetic field. The particles may be passed through a parallel plate induction coil, such as that shown in the Figure in which a conduit is formed by bent copper sheets 1 and 2 separated by non-conductive material 3, the conduit being provided with cooling coils 7 and 8. Power leads 4 and 5 are connected to the copper sheets at one end and the sheets are connected by copper shorting bars 6 at the other end. The particles of refractory metal may be passed through in a gaseous medium or in a fused salt medium such as eutectic mixture of sodium chloride and magnesium chloride.
Patent GB-1016908-A (GB)
Title: Rotary piston machine especially an internal combustion engine
IPC: F01C19/10
Filed: 1962-10-18
Abstract: 1,016,908. Rotary-piston internal combustion engines. N.S.U. MOTORWERKE A.G. and WANKEL, G.m.b.H. Oct. 18, 1962 [Oct. 18, 1961; Feb. 24, 1962], No. 39405/62. Heading F1F. In a rotary-piston I.C. engine of two-choidal construction, as shown, a housing having a two-lobed epitrochoidal inner profile with a three-sided piston planetarily rotatable therein and a sealing strip mounted in an axiallyextending groove at each piston corner which strip moves radially outwards and continuously engages the epitrochoidal profile, the trailing side of the sealing strip 13, Fig. 3, (not shown) is supported by an "L-shaped" carrier member 16 which is also capable of radial outward movement but limited by the abutment of the short limb of the "L" against the strip. The radial outward movement of the carrier member permits the strap which pivots about the leading edge 17 of the carrier member to be supported extremely close to the running surface of the piston to prevent jamming of the strip in its groove. In a modification, either the leading face of the carrier member or the trailing face of the strip is recessed along the whole width of the piston so that engagement between the sealing strip and the carrier member is confined to the outermost part of the carrier member. In another embodiment, the portion of the groove in which the carrier member is located, is extended radially inwards. The short limb of the "L" is then omitted and the carrier member is extended into the groove extension. Pins secured to the carrier member extend loosly through the sealing strip to permit radial outward movement of the carrier members.
Patent GB-948479-A (GB)
Title: Improvements in or relating to fuel elements for nuclear reactors
Inventor: SAYERS JOHN BRIAN
IPC: G21C3/16
Filed: 1961-11-03
Abstract: 948,479. Fuel elements. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. Oct. 23, 1962 [Nov. 3, 1961], No. 39407/61. Heading G6C. A nuclear reactor fuel element comprises a ring of enriched non-metallic fissile material supported at its inner periphery by depleted non metallic fissile material, and enclosed in a sheath. A number of such rings enclosed in a helium filled stainless steel can are suitable for use in high temperature reactors; the embodiment described has an outer can surface temperature of 750‹C., and the maximum inter-, nal temperature is 1610‹C. The enriched and depleted fissile materials are preferably oxides, and in the embodiment described they are uranium oxide enriched and depleted to 2% and 0. 43% U. 235 respectively. Thus the fuel element is made up from a series of pellets, each pellet comprising an outer ring of enriched material and an inner ring of depleted material, there being an annular gap between the two rings.
Patent GB-1003065-A (GB)
Title: An improved tablet and preparation thereof
IPC: A61K9/20
Filed: 1962-10-18
Abstract: Tablets containing therapeutic and/or neutritional material are prepared by mixing the powdered material, or a solution thereof in an inert volatile solvent, with not less than 20 per cent by weight of sorbitol, preferably having a particle size of from 100 to 2000 microns, and forming the mixture thus obtained directly into tablets by compression.  The active ingredients may be a vitamin, an antibiotic, an anaesthetic, an antitussive or a mixture thereof.  The tablets may also contain lubricants, fillers, colorants, disintegrants and sweetening agents.  Examples disclose (a) double antibiotic anaesthetic troches (b) triple antibiotic anaesthetic troches (c) antitussive anaesthetic troches (d) chewable vitamin tablet (e) ascorbic acid tablet and (f) vitamin A tablet.
Patent GB-1161613-A (GB)
Title: Pulse-Responsive Stepping Motor
Inventor: KOHLHAGEN WALTER
IPC: H02K37/20
Filed: 1966-09-05
Abstract: 1,161,613. Electric motors. W. KOHLHAGEN. 5 Sept., 1966, No. 39603/66. Heading H2A. A stepping motor has two sets of stator polepieces 16, 18 mounted with permanent magnet 28 and wound core 20 on a frame 26 and rotor 14 mounted on core 20 so that two magnetic circuits are formed with core 20 common to both. Rotor 14 is provided with equally spaced peripheral poles 46 co-operating with poles 22, 24 on stators 16, 18 respectively. Under the influence of the permanent magnet flux the rotor poles are aligned with poles 24 on stator 18 to provide a rest position. If coil 44 is energized the induced magnetic polarity of rotor 14 is changed and poles 46 are simultaneously attracted into alignment with poles 22 of stator 16 and repelled by poles 24 on stator 18. On de-energization of the coil, the rotor poles are attracted by poles 24 to complete the step. To ensure that rotor 14 rotates in one direction with constant torque the peripheral length of the stator polepieces reduces in the direction of rotation such that the polepieces at the extreme end of each set have the same width as the rotor polepieces. Other configurations may be used to give different torque characteristics, Figs. 8 and 9 (not shown). The rotor mounting may be modified to provide an annular air gap with the core, Fig. 7 (not shown). In the alternative construction, Figs. 10 and 11 (not shown), poles (314) of upper field plate (312) alternate with poles (318) of lower field plate (302) around rotor (290) and an annular magnet (296) is secured between the field plates. Rotor 296 is mounted on shaft (310) journalled in core (304) which carries a winding (294). In operation, energization of coil (294) causes rotor poles (316) to be attracted to poles (318) and, on subsequent de-energization the rotor poles are attracted to poles (314) (as shown in Fig. 11), the direction of rotation being ensured by rotor pole extension (330). In a modification, where the number of rotor poles is equal to the number of poles on one field plate, the width of the rotor poles varies to provide the correct direction of rotation and graded torque over the step, Fig. 14 (not shown).