baber/WOPTO huggingface dataset:
Patent GB-1310979-A (GB)
Title: Electrolytic method of making a nickel positive electrode for an alkaline battery
IPC: H01M4/32
Filed: 1970-07-24
Abstract: 1310979 Electro-depositing nickel compounds in pores MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 24 July 1970 [25 July 1969] 36136/70 Heading C7B A Ni positive electrode for an alkaline Ni-Cd battery is made by infilling the holes of a porous sintered Ni plaque with a Ni compound e.g. 7 Ni (OH) 2  3 Ni (NO 3 ) 2  by cathodic deposition in an electrolyte containing Ni ions and NO 3  and/or NO 2  ions or Ni ions in an ammonium, ammoniate or amino complex, then immersing the plaque in hot water (at least 65‹C) for at least 20 minutes. The hot water may contain 0À01 mol NH 4  and 0À05 mol Ni ions and/ or a surface active agent e.g. polyoxyethylene-alklanyl ether, to convert the electrodeposited Ni compound and preferably part of the Ni plaque into active Ni (OH) 2 . The Ni plaque may comprise a core of Ni-plated steel or a net or punched sheet of Ni. The finished electrode of specific capacity at least 300 m Ah/cc may be spirally wound in the hermetically sealed battery.
Patent GB-1382783-A (GB)
Title: Fin and tube type heat exchanger
IPC: F28F1/36
Filed: 1973-07-30
Abstract: 1382783 Finned heat exchange tubes WESTINGHOUSE ELECTRIC CORP 30 July 1973 [2 Aug 1972] 36247/73 Heading F4S A fin strip provided with two series of transversely extending slits 16 and 18 and folded longitudinally so as to have a U-shaped crosssection is wound helically on a tube 28 so that the base portion 10 is in contact with the tube and the leg portions 12 and 14 project outwardly therefrom. Each of the slits 16 extends from a point 20 adjacent the base portion 10 to a point 22 just short of the outer longitudinal edge 24 of the leg portion 12 or 14, whereas each slit 18 extends from the outer edge 24 inwardly to a point 26 well short of the base portion. The distance between the point 22 and the edge 24 is less than the distance between any two successive slits. During the winding operation the slits 16 and 18 open up to form the expanded radial fin pattern shown in Fig. 3. The slits in one leg portion may be offset from those in the other leg portion. In an alternative embodiment (not shown), the fin strip has only one leg portion extending from the base portion 10 to define an L-shaped cross-section.
Patent GB-1495147-A (GB)
Title: Surface acoustic wave devices
IPC: H03H9/44
Filed: 1974-08-16
Abstract: 1495147 Surface wave devices DEFENCE SECRETARY OF STATE FOR 28 July 1975 [16 Aug 1974] 36289/74 Heading H3U Surface acoustic waves generated by transducer 3 along a track 5 are reflected by arrays 6, 8 of elements, e.g. strips or grooves, into a track 9 towards output transducer 4, the elements being arranged in echelon formation. The inter-element spacing may be constant, or may vary along the arrays to permit pulse expansion or compression. The length of the elements may vary to provide amplitude weighting, and refraction within the array may be prevented by providing additional elements as disclosed in Specification 1,492,987. In addition the fingers of the transducers may also be arranged in echelon (Fig. 2, not shown), with the inter-finger spacing corresponding to the interelement spacing in the aligned part of the respective array. In a modification the centres of successive elements in the arrays may lie on a curved line; in another modification the output transducer 4 may be positioned to the right of array 8, the orientation of elements 10 being accordingly changed. To correct for phase errors a variable width metallic strip may be deposited between arrays 6, 8. By providing a device as shown in Fig. 1 and a matched device which delays low frequencies more than high frequencies in a radar system, a pulse can be expanded and transmitted as a radar pulse, then received and compressed for subsequent processing.
Patent GB-977809-A (GB)
Title: Improvements in reservoirs for hydraulic braking systems
Inventor: MOYES GORDON HASWELL
IPC: B60T11/26
Filed: 1962-09-25
Abstract: 977,809. Reservoirs for hydraulic brakes. GIRLING LTD. Sept. 4, 1963 [Sept. 25, 1962], No. 36350/62. Heading F2F. The reservoir 10 of an hydraulic braking system has a cap 12 moulded in nylon or other translucent or transparent plastic with a translucent window 13 through which the level of liquid can be checked without removing the cap and a vent which communicates with the atmosphere by way of a path of considerable length to prevent escape of liquid through it. The peripheral portion 14 of the cap seats on an annular flange 15 of a filter 16 and the two are held down on a rubber washer 17 on the upper edge of the reservoir by a flanged ring 18 which screws on to the latter. A circumferential groove 19 on the underside of the periphery 14 of the cap communicates with the atmosphere through a port 22 on one side and with the inside of the reservoir through a radial groove 21 in the flange 15 on the diametrically opposite side. To position the cap 13 in relation to the groove 21 a positioning peg 23 is provided on the former. The filter is of moulded nylon.
Patent GB-908698-A (GB)
Title: Steroid compounds and their preparation
IPC: C07J21/00
Filed: 1958-11-12
Abstract: The invention comprises 12a  - halo - 3a  - hydroxypregnane-11,20-dione, 12a -halo-3,11,20-pregnanetrione, 12a  - halo - 3,11,20 - pregnanetrione-3,20-bis-ethylene ketal, 12a -halo-3,20-diketo - 11b  - pregnanol-3,20-bis-ethylene ketal and 11b ,12b  - epoxy-3,20-pregnanedione-3,20-bis-ethylene ketal (particularly the 12a -bromo compound in each case), and a process which comprise each stage and the whole of the following synthesis:- 3a -acyloxy-12a -halopregnane-11,20-dione is hydrolysed to the corresponding 3a -hydroxy compound, this compound is oxidised to form 12a -halo-3,11,20-pregnanetrione, this compound is reacted with ethylene glycol in the presence of an acid catalyst to form 12a -halo-3,11,20-pregnanetrione - 3,20 - bis - ethylene ketal, this compound is reduced with lithium borohydride to form 12a -halo-3,20-diketo-11b -pregnanol-3,20-bis-ethylene ketal, this compound is reacted with an alkali metal hydroxide to form 11b ,12b -epoxy-3,20-pregnanedione 3,20 - bis - ethylene ketal, and this compound is reacted with aqueous acid, e.g. hydrochloric acid, to form 12a  - halo - 11b  - hydroxypregnane-3,20-dione. Specification 843,773 is referred to.
Patent GB-890025-A (GB)
Title: Improvements in piston pumps, in particular for the injection of fuel into internal combustion engines
Inventor: RAIBAUD JEAN PIERRE
IPC: F02M41/12
Filed: 1958-11-12
Abstract: 890,025. Fuel injection pumps. PRECISION MECANIQUE LABINAL. Nov. 12, 1958, No. 36418/58. Class 102(1). [Also in Group XXIX] A fuel injection pump comprises a main rotating and reciprocating piston 1 working in a cylinder having several outlets 2 and a control valve 5 moved against a spring 12 by a second piston 16 during the delivery stroke of the main piston. The valve 5 controls the connection of an inlet port 6 1 , and a by-pass port 7 1 , with a passage 15 leading to the main cylinder such that during the delivery stroke of the piston 1 the main cylinder is open to the inlet port until valve 5 closes port 6 1 , and delivery takes place until valve 5 opens by-pass port 7 1  by a control groove 25. The return stroke of the valve 5 is controlled by leakage of liquid past a throttle x, which may be adjusted by a governor 23, such that when the speed of the pump exceeds a predetermined value, the valve 5 does not complete its return stroke before being moved by the delivery of the piston 16. Thus the inlet port 6 1 , is closed sooner to advance the timing of the injection.
Patent GB-349564-A (GB)
Title: Improvements in magnetic separators
IPC: B03C1/22
Filed: 1929-11-29
Abstract: 349,564. Magnetic separators. SPENCER (MELKSHAM), Ltd. and CLARKE, M. W., Stockwell House, Spa Road, both in Melksham, Wiltshire. Nov. 29, 1929, No. 36673. [Class 72.] The separator comprises an electromagnetic system having magnets a disposed above and magnets c below a conveying surface b, the magnetic effect of the magnets c being somewhat in advance of that of magnets a having regard to the direction of travel of the conveyer. The magnets are arranged so as to form oblique air gaps e. The polepieces above the conveyer are surrounded by a cleaning belt f which removes the separated articles or materials to a delivery shoot g.
Patent GB-907083-A (GB)
Title: Improved releasable two-part electrical connector
IPC: H01R13/635
Filed: 1960-10-26
Abstract: 907,083. Two-part couplings. BENDIX CORPORATION. Oct. 26, 1960 [Nov. 24, 1959], No. 36769/60. Class 38 (1). A locking device for a plug-and-socket connector comprises a plurality of radially disposed pins 44 on the socket 10 slidably receivable in slots 75 in the plug 11, said slots opening towards the socket 10 and including spring plungers 69 which can be depressed to permit the pins 44 to enter off-set parts 79 of the slots, the plungers then returning behind the pins to prevent their escaping until a release mechanism for simultaneously opening the slots is operated. To connect parts 10 and 11, guiding splines 37, on a hood 31 surrounding pin contacts 29, are engaged in slots 39 in a socket skirt 34. As the contacts engage, a plug sleeve 60 in which the slots 75 are formed depresses an outer socket sleeve 45 against a spring 47 to uncover pins 44, which enter and are locked in slots 75 as described above. A knurled sleeve 57 on the plug is then rotated carrying with it the sleeve 60 and a socket sleeve 40, which carries pins 44 and is screw-threaded on the socket shell 12. As the sleeve 40 moves up the shell 12 a spring 66 in the plug is compressed to force a ring 56 into engagement with the skirt 34 of shell 12. Coil springs 80 in recesses 73 of sleeve 60 tend to rotate projecting portions 72 of the head 67 of sleeve 57 relative to the sleeve 60, such rotation being prevented by lanyard pin 85 held by spring 86 in an elevated position in which it extends from head 67 into sleeve 60. To release the plug lanyard cord 89 is pulled, e.g. by a missile body as it begins to separate from its nose cone which carries socket 10. Pin 85 disengages sleeve 60, and compressed spring 66 causes pins 44 to exert a camming action upon portions 79 of slots 75, so moving sleeve 60 with respect to head 67 against the springs 80 that pins 44 escape from slots 75. The force exerted by compressed springs 66 and 47 then quickly separates connector parts 10 and 11. Springs 80 then cause sleeve 60 to return to its original position relative to head 67, when lanyard pin 85 may be restored to its former elevated position engaging sleeve 60. Connector parts 10 and 11 may be reconnected after sleeve 40 is restored to its initial position.
Patent GB-1471909-A (GB)
Title: Antibiotic substance and a method for producing the same
IPC: A61K35/74
Filed: 1974-08-21
Abstract: 1471909 Antibiotic KAYAKU ANTIBIOTIC RESEARCH CO Ltd 21 Aug 1974 [11 Sept 1973]. 36792/74 Heading C2A A method for producing an antibiotic substance, designated Ma fraction of neocarzinostatin comprises cultivating a strain of Streptomyces carzinostaticus var. F-41, Kuroya, ATCC No. 15945 and separating and collecting the Ma fraction from the culture solution. Separation may be achieved by fractional precipitation, adsorption or gel-filtration. The Ma fraction has the following characteristics. (1) Elemental analysis; C: 47À91%, H: 6À63%, N: 14À56%, S: 1À26%, O: 29À64%. (2) Molecular weight; 13,200. (3) Amino acid composition; Aspartic acid 11, Threonine 11 or 12, Serine 10, Glutamic acid 5, Proline 2, Glycine 14, Alanine 16, 1/2 Cystine 4, Valine 11, Methionine 0, Isoleucine 1 Leucine 6, Tyrosine 1, Phenylalanine 5, Histidine 0, Trytophane 3, Lysine 1, Arginine 3, Ammonia (7). (4) Decomposition point; 276‹ C. (5) Specific rotation (C=1%, H 2 O). (7) Solubility; easily soluble in water, fairly soluble in methanol, slightly soluble in ethanol and acetone and insoluble in other organic solvents. (8) Color reaction; Biuret, Folin, phenol, peptide and anhydrin reactions are positive and Molisch, anthrone, phenol-sulphuric acid, ferric chloride and molybdenum blue reactions are negative. (9) Infra-red absorption as in Fig. 9 (not shown). (10) Electrophoresis:- (11) Isoelectric point=3À30, and (12) Form: the present substance when lyophilized is an amorphous white to light yellowish white powder.
Patent GB-1044486-A (GB)
Title: Semiconductor lamp construction
Inventor: ALLEN JOHN WALTER
IPC: H01L33/00
Filed: 1964-09-09
Abstract: A zinc selenide body containing a rectifying junction is subjected to pulses of reverse voltage of sufficient amplitude to produce avalanche breakdown of the junction with consequent emission of light.  Such a lamp may be made by the following method.  A mixture of zinc selenide and aluminium is heated in a sealed evacuated silica tube and the sublimed aluminium-doped selenide later collected at the cooler end of the tube.  Slices of the ingot thus produced are heated in molten zinc.  The material is then cut into dice which are etched in caustic soda.  Each die is provided with an ohmic contact and a smaller rectifying contact by heating it in a nitrogen-hydrogen atmosphere in contact with iridium and lead pellets respectively, a drop of aqueous hydrazine hydrochloride being placed on the wafer surface at the beginning of the process. Tinned copper wires are joined to the contacts and the assembly moulded into a transparent plastic block, the front surface of which may be formed as a lens.
Patent GB-1438448-A (GB)
Title: Internal combustion engine ignition system
IPC: F02P15/10
Filed: 1974-08-22
Abstract: 1438448 Ignition systems GENERAL  MOTORS CORP 22 Aug 1974 [17 Sept 1973] 36916/74 Heading F1B In an electronic ignition circuit including a switch 20, e.g. transistor 21, in series with the primary winding 15 of the ignition coil 18, re-strike capability should the spark blow-out during the duration of the ignition signal, e.g. from mechanical cam-operated contacts 4, is provided by controlling the switch by a gated free running multivibrator 40, itself controlled by the shaped ignition signal so that each ignition signal initiates a string of pulses from the multi-vibrator 40 acting to switch transistor 20 on and off, the primary current building up during the first 'on' period and a spark being produced at the beginning of the first 'off' period; subsequent 'on' and 'off' periods in that string of pulses are effective merely to produce a sufficient voltage to maintain the spark unless the spark blows-out, when the next 'off' pulse is effective to produce a voltage sufficient to re-establish a spark. The gated free running multivibrator may produce pulses at a predetermined rate, the string being initiated and finished by the start and end of the ignition signal. Again, Fig. 1A (not shown), each individual pulse may be terminated when the primary current reaches a predetermined value. The mechanical contacts may be replaced by a magnetic pick-up, and the termination of the spark may be effected by a turn-off signal responsive to a specified cranks-shaft position, e.g. corresponding to T.D.C. of the piston. Again Fig. 2 (not shown), the shaped signal from contacts 4 may be fed to a monostable multi-vibrator (70), the output of which is fed to a gated free running multi-vibrator (75) controlling the transistor 21, both multi-vibrators being controlled by signals dependent on selected external conditions, e.g. ambient temperature, ambient pressure, engine temperature, engine vacuum, engine speed or atmospheric humidity.
Patent GB-932464-A (GB)
Title: Improvements in or relating to nuclear fuel elements
Inventor: WAINE PETER
IPC: G21C3/32
Filed: 1960-10-27
Abstract: 932,464. Nuclear fuel elements. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. Oct. 11, 1961 [Oct. 27, 1960], No. 36927/60. Class 39 (4). A rod cluster fuel assembly support structure 4 of openwork construction is fabricated from strips 5, e.g. of stainless steel 0.01 inch thick, with transverse troughs 6 at intervals and assembled with the lengths of the strips 5 intermediate the troughs 6 secured together at their centres by resistance welds 7 to form webs 40 of double thickness, the troughs 6 coming together to define a number of spaced openings 8 bounded by a single thickness of strip material for receiving the fuel rods in the cluster. Flanged webs 25 connect the structure 4 with a U-section, annular support 26 (0.016 inch thickness) disposed between upper and lower graphite sleeves 27 inside a tubular housing 3 of graphite. Each fuel rod comprises a stack of sintered UO 2  fuel pellets in a tubular, stainless steel sheath 10, the ends of which carry collars and the weight of the fuel rods is taken on the lower collars by the upper edges of the strips 5. The fuel pellets are spaced from the caps sealing the ends of the sheaths 10 by heat-insulating plugs 12 of sintered alumina.
Patent GB-1001542-A (GB)
Title: Dropper containers
IPC: B65D51/22
Filed: 1961-10-16
Abstract: 1,001,542. Drop-delivering containers and stoppers therefor. ABBOTT LABORATORIES. Oct. 16, 1961 [Aug. 2, 1961], No. 37029/61. Headings B8D, B8N and B8T. A moulded drop-delivering container 10 comprises a squeeze tube 11 of an elastic plastics material, closed at the bottom end 15 and provided with an integral cylindrical neck 17, which serves as a spout, and a transverse puncturable diaphragm 20 closing the tube 11 at the inner end of the neck 17, together with a protective twist and thrust cap 12, preferably of a rigid plastics material, having a tubular skirt 22, depending from a head 21, which telescopes down over the outer end of the neck 17, and a plugging element 24 depending coaxially within the skirt 22 from the head 21 and having a sharp inner end 26 within the neck 17 and spaced from the diaphragm 20. The cap 12 may be forced into the neck 17 until the sharp end 26 punctures the diaphragm 20 so that, on removal of the cap 12, the contents may be squeezed out of the tube 11 drop by drop. The plugging element 24 has an outer diameter slightly greater than the internal diameter of the neck 17 to provide a fluid-tight seal which prevents contamination. For further protection an annular bead may be formed integrally with the neck 17 or with the skirt 22 in the mouth of the recess 25 defined by the skirt 22 and the plugging element 24. A cavity 35 reduces the amount of material used. A stiffening rod may be embedded coaxially in the tapered point 26. A truncated conical section of greater diameter than the plugging element 24 may be provided at the base thereof to seal the mouth of the neck 17 when the cap is thrust forward.
Patent GB-350485-A (GB)
Title: Improvements in and relating to the separation of dry materials
IPC: B03B4/02
Filed: 1929-12-03
Abstract: 350,485. Separating solid materials. HOLMES, C. W. H., Deneside, Alverstone Avenue, Low Fell, and BIRTLEY CO., Ltd., Birtley, both in Durham. Dec. 3, 1929. No. 37051. [Class 117.] In apparatus for the separation of materials such as coal and slate of the type described in Specifications 207,094 and 321,670, [both in Class 117, Sifting &c.], the reciprocating table 25, shown in the Figure, is provided with a banking bar 37 and a straight spillage edge 36 inclined to each other, and both inclined to the line of reciprocation so that the angle of inclination of the banking bar is greater than that of the spillage edge. Two tables may be arranged in duplex formation in which the spillage edges are adjacent or at opposite sides, and the tables may be provided with riffles 27, preferably parallel to the reciprocating movement, or may be without riffles, in which case the surface is preferably formed with corrugations at right-angles to the reciprocating movement. The invention is described as embodied in apparatus as described in Specification 332,291, [Class 117, Sifting &c.].
Patent GB-1426970-A (GB)
Title: Pharmaceutical or cosmetic preparations
IPC: A61K8/36
Filed: 1974-08-23
Abstract: 1426970 Pharmaceutical composition HENKEL & CIE GmbH 23 Aug 1974 [27 Aug 1973] 37067/74 Heading A5B A pharmaceutical or dentifrice composition for regulating the deposition or dissolution of calcium salts comprises cyclohexane-1, 2, 3, 4, 5, 6-hexacarboxylic acid and a carrier. The composition may be in the form of a toothpaste, mouthwash or systemic treatment form. In Example 5, dentifrices also include glycerol, water, sodium carboxymethyl cellulose, silicic acid xerogel, sodium lauryl sulphate, etheral oils, saccharine, aluminium hydroxide, silicic acid pyrogene. A mouthwash also includes chloral thymol.
Patent GB-1374084-A (GB)
Title: Cleaning apparatus for separating solid and or liquid particles from gases
IPC: B04B5/12
Filed: 1971-08-10
Abstract: 1374084 Centrifugal separator H H ROBERTSON CO 10 Aug 1972 [10 Aug 1971] 37473/71 Heading B2P A separator for removing solid and/or liquid particles from gases comprises a casing 10 having an inlet 11 and an outlet 12, one or more vaned devices 16, 17 within the casing having fixed vanes for imparting swirl to a particle-laden gas stream as it passes through the casing so that heavier particles are separated out by centrifugal force towards the casing wall, one or more freely rotatable impellers 18, 19 within the casing to increase the radial velocity component acting on each particle, and means 13 for receiving the particles removed from the stream. The twist of the vanes of device 16 is opposite to that of the vanes of device 17 and the impellers are arranged to rotate in opposite directions. The receiving means 13 consist of a sump having a drain 14 and an inspection cleaning hatch 15. A frusto-conical baffle 20 is mounted adjacent the outlet 12 to allow expansion of the gas flow and to provide a wetted surface for further particle collection.
Patent GB-985160-A (GB)
Title: Monoazo dyes of the benzene-azo-pyrazolone series
Filed: 1963-09-24
Abstract: 2 - Sulpho - 5 - benzoylaminoanilines wherein the benzoylamino group may be nitro-substituted are prepared by adding 1.0-1.2 mols. of benzoyl chloride or a nitrobenzoyl chloride in solution in an inert solvent e.g. trichloroethane to an agitated aqueous solution of 1 mol. of the sodium salt of 1,3-diaminobenzene-4-sulphonic acid and 1.8 mols. of sodium acetate, stirring for 15 hours and then filtering off the monobenzoyl derivative.  2-Sulpho-5-benzoylamino-and -m- and -p-nitrobenzoylamino-anilines are specified.ALSO:The invention comprises monoazo dyes of formula <FORM:0985160/C4-C5/1> wherein y is H- or -NO2 and x is -H or -Cl.  The dyes are prepared by diazotizing suitable 3-benzamido-aniline-6-sulphonic acids (see Division C2) and coupling them with suitable 1 - phenyl - 3 - methyl - 5 - pyrazolones and give yellow shades on natural and synthetic polyamide fibres. Examples describe the preparation of the dyes.
Patent GB-1059657-A (GB)
Title: Xerographic plate
IPC: G03G5/082
Filed: 1964-09-16
Abstract: 1,059,657. Xerographic plates. RANK XEROX Ltd. Sept. 16, 1964 [Oct. 9, 1963], No. 37808/64. Heading HlK. [Also in Division G2] A xerographic plate adapted for reflex exposure comprises an optical screen made up of small finely interspersed, transparent and opaque areas, a transparent layer of gold on at least a portion of one surface of the screen and an amorphous layer of selenium over the gold. Suitable ranges of thickness for the selenium and gold layers, percentage transmission of the optical screen and pattern density thereof are exemplified. A substrate of Al, glass or methacrylate polymer may be provided. Red light is preferably used for exposure to the image. The optical screen may be a conventional dot or line screen. The plate may be made by coating a dot screen with a lacquer, evaporating thereon Au, followed by Se. The finished plate was fixed to a polymethacrylate sheet. The plate may be in the form of a drum, a flexible belt or cut sheets. The optical screen may be made of two or more layers.