baber/WOPTO huggingface dataset:
Patent GB-1263552-A (GB)
Title: Phosphor screen fabrication
Inventor: SHORTES SAMUEL RAY
IPC: H01J9/22
Filed: 1969-05-06
Abstract: 1,263,552. Colour television tubes. TEXAS INSTRUMENTS Inc. 6 May, 1969 [27 May, 1968], No. 23044/69. Heading H1D. [Also in Division C4] A method of applying a layer of phosphor particles smaller than 1 micron to form a colour display screen for a C.R.T. comprises immersing a screen support in water or an aqueous solution, suspending the particles in the water or solution, adding silicate to the suspension and adding acid to the suspension to effect a pH of 1 to 5 and settle the particles on the screen. This range of pH values results in the formation of a non-gelatinous, semicrystalline precipitating form of silicic acid which traps and settles the particles. A screen comprises a glass plate 13, a continuous layer 19 of large green and blue emitting particles 21, 23 of 5-16 microns and a discontinuous layer of small red emitting particles 33 of 0À1 to 1 micron. The particles 21 are ZnCdS:Ag coated with a barrier layer-of SiO 2 ; particles 23 are ZnS:Ag with a thicker barrier layer of SiO 2  and particles 33 are of YVO 4 :Eu. The barrier layer is produced by an oxidizing and sulphiding process. Different colours are obtained by applying different potentials to the screen. The large and small particles are applied in a single process. The screen is immersed in an aqueous solution containing an ester of a weak acid, a formate, a carbonate or acetic acid; both types of particles are suspended in the solution; Na or K silicate is added and the pH adjusted to 7 to 8 to form gelatinous silicic acid which adheres to the large particles and these settle on the screen, the pH is adjusted to 1 to 5 with acetic, formic, carbonic, carbolic, HCl or H 2 SO 4  acid and the small particles then settle. The screen is heated to 400‹ C. for 30 minutes.
Patent GB-1015226-A (GB)
Title: Improved transducing head mount for a magnetic tape transport
IPC: G11B5/53
Filed: 1964-06-03
Abstract: 1,015,226. Mounting magnetic transducer heads. AMPEX CORPORATION. June 3, 1964 [July 17, 1963], No. 23047/64. Heading G5R. A magnetic head 29 is positioned on a rotatable drum 26 by means of three adjustable elements 31-33. Each element comprises a base portion 36 screwed to the drum and a resilient portion 41 movable in the direction of the arrows 54 by screwing or unscrewing a tapered screw 61; the elements are identical except that element 33 is inverted and need not be provided with a tapered screw. Element 31 engages a re-entrant notch 51 of the head 29 and serves to adjust the radial position of the head and to provide a fulcrum about which the head pivots when its circumferential position is adjusted by element 32. When the position of the head has been adjusted the head is fixed in position by a screw 65 which passes loosely through a larger aperture 66 in the head. Two or four heads may be spaced at 180 or 90 degrees intervals round the drum.
Patent GB-951105-A (GB)
Title: Improvements in and relating to new azo dyestuffs
Inventor: MINGASSON GEORGES RAYMOND ENRY
IPC: C09B44/14
Filed: 1960-07-01
Abstract: The invention comprises azo dyestuffs of formula <FORM:0951105/C3/1> wherein A is an anionic radical, R is the residue of a diazotizable amine free from solubilizing groups, R1 is hydrogen or an aryl group and R2 is an alkyl, aryl or alkoxycarbonyl group.  The dyestuffs are prepared by alkylation of a suitable monoazo dyestuff.  They are used to dye polyacrylonitrile fibres in yellow-green to red shades. In examples, the dyestuff aniline --> 3-methyl-5-pyrazolone is refluxed in chlorobenzene with dimethyl sulphate or methyl paratoluenesulphonate, the solvent is removed by steam distillation, the dyestuff solution filtered and the dyestuff precipitated by the addition of zinc chloride and salt.  In further examples, additional components specified are o- and p-toluidines, m- and p-xylidines, the chloroanilines, o- and p-anisidines, o-nitroaniline, 4-nitro-2-methyl- or -methoxy-aniline, 2:5-dichloroaniline and b -naphthylamine; 3-ethoxycarbonyl - 5 - pyrazolone, 3 - phenyl - 5 - pyrazolone and 1-phenyl-3-methyl-5-pyrazolone.
Patent GB-231910-A (GB)
IPC: B21D53/34
Abstract: 231,910. Federal Pressed Steel Co., (Assignees of Hansen, F. D., and Tinker, H. W.). April 7, 1924, [Convention date]. Brakes. - Brake drums for automobiles &c. are made by cupping a circular blank and stamping the web of the cupped blank to give it ribbed formation. The blank 10 is preliminarily cupped by dies 11, 12, strippers 11<1> being provided to strip the work from the upper die. The hub aperture 6 and bolt holes 7 are then punched, after which the work is placed on a die comprising a base supporting a top plate 16, recessed to accommodate grooved blocks 20 coacting with dies 29, on the upper member, to produce ribs on the web of the cupped blank. The ribs may be radially or otherwise disposed and may be of constant or varying cross section. The exterior of the web when finished is preferably of slightly concave form. The ribs may project externally.
Patent GB-1403944-A (GB)
Title: Erosion protection mat
IPC: D04H1/00
Filed: 1973-05-16
Abstract: 1403944 Revetments E A H NAUE KG 16 May 1973 [17 Nov 1972 27 April 1973] 23369/73 Heading E1H [Also in Division B5] An erosion protection mat, e.g. for coastlines, dunes, river banks or embankments, comprises a layer 1 of randomly oriented curled fibres, e.g. coconut or sisal, secured on at least its underside to a layer 2 of durable fabric or fibrous material, layer 1 having a larger volume than layer 2 and being able to retain solid material, e.g. sand, earth or shingle, within it, layer 2 being permeable to water but not the solid material. The fibres in layer 1 are bonded to and entangled with one another, and may be bound by a water-resistant binder. Layer 2 may be a sheet of fabric or a compressed fibre web. Natural or synthetic materials or a mixture of both may be used for the layers. The layers may be joined by an adhesive or by sewing or needling. Layer 2 may project beyond the edges of layer 1 for joining a number of mats together, Fig 2 (not shown). Layer 1 may be filled with earth containing a binder, or seeds and plants. The mat is secured by nails or staples, Figs 4 and 6 (not shown).
Patent GB-587058-A (GB)
Title: Improvements in or relating to apparatus for cooking eggs and other kinds of food
IPC: A47J29/02
Filed: 1944-11-24
Abstract: 587,058. Electric cooking apparatus. DELASAIRE, J. Nov. 24, 1944, No. 23450. [Class 39 (iii)] [Also in Groups VI and XXXVII] A vessel for cooking eggs or the like in which the period of heating is controlled by a timing device, has an electric heating element 7 fitted in a water-tight division 3. A synchronous motor 9 drives a shaft 11 carrying a cam 20 which operates to open a mercury switch 14 in circuit with the heating element and motor. The switch is closed manually by rotating the cam by means of a knob 12 to a position determined by an adjustable timing disc 13. Rotation of the cam causes a cam follower 19 to ride over a stepped portion 20a of the cam surface lifting arm 15 and tilting the mercury switch to its closed position. The cam is rotated in the reverse direction by the motor until the stepped portion of the cam is reached and the mercury switch opens the circuit to the motor and heating element.
Patent GB-981388-A (GB)
Title: Improvements in fluorine-containing elastomers
IPC: C08F214/26
Filed: 1963-06-12
Abstract: Curable elastomeric copolymers comprising (a) 45 to 55 mole per cent of -CF2CF2- units, (b) 54.8 to 35 mole per cent of <FORM:0981388/C3/1> units where R is C1- 18 alkyl or R1OCH2CH2-where R1 is C1- 4 alkyl and (c) 0.2 to 10 mole per cent of <FORM:0981388/C3/2> units where X is chlorine, bromine, iodine, hydroxyl or -NHCOY, where Y is hydrogen or C1- 8 alkyl, may be prepared by copolymerizing tetrafluoroethylene with the corresponding vinyl ethers.  Polymerization may be effected in bulk, water or organic solvents, e.g. acetone, methyl ethyl ketone, butyl acetate, ethyl acetate, isopropyl alcohol or tertiary butyl alcohol. In aqueous media an emulsifier, e.g. alkali metal and ammonium salts of alkyl sulphates, fatty acids, fluorinated fatty acids and rosin acids, such as ammonium perfluoro-octanoate, potassium stearate, sodium lauryl sulphate, sodium tetradecyl sulphate and the sodium salts of tetrahydroabietic acid and disproportionated rosin. Polymerization initiators, e.g. alkali metal and ammonium persulphates, optionally activated by alkali metal sulphites and bisulphites, hydrogenperoxide, benzoyl peroxide, cumene hydroperoxide, 2,21-azobis-(2-methylpropionitrile) and nitrogen fluorides, and chain transfer agents, e.g. alkyl mercaptans, secondary alcohols and ketones, may also be present. Many suitable vinyl ethers are listed and examples describe the copolymerization of tetrafluoroethylene with (1 to 3, 5 and 17) methyl vinyl ether and 2-chloroethyl vinyl ether; (4) methyl vinyl ether and 2-iodoethyl vinyl ether; (6) ethyl vinyl ether and 2-chloroethyl vinyl ether; (7) 2-ethylhexyl vinyl ether, methyl vinyl ether and 2-chloroethyl vinyl ether; (8 and 9) n-butyl vinyl ether, methyl vinyl ether and 2-chloroethyl vinyl ether; (10) 2-butoxyethyl vinyl ether, methyl vinyl ether and 2-chlorethyl vinyl ether; (11) 1-isobutyl-3,5-dimethylhexyl vinyl ether, methyl vinyl ether and 2-chlorethyl vinyl ether; (12) methyl vinyl ether and 2-formamidoethyl vinyl ether; (13) methyl vinyl ether and 2-bromoethyl vinyl ether; and (14) methyl vinyl ether and 2-hydroxyethyl vinyl ether.  The products may be cured with conventional curing agents, and examples describe the compounding of the products of Examples (1, 3, 4, 6 to 10, 12 and 13) with carbon black, magnesium oxide and hexamethylenediamine carbamate; (2) carbon black, magnesium oxide and ethylenediamine carbamate; (5) magnesium oxide, titanium dioxide and hexamethylene-diamine carbamate; (12) carbon black, 1,3-bis-(hydroxymethyl) - 2 - imidazolidone and quinolinium tetrachlorozincate; (14) carbon black and 1,3-bis(3 - isocyanato - 4 - methylphenyl) urea; (15) carbon black, magnesium oxide, zinc oxide and 2 - mercapto - 2 - imidazoline, hexamethylenediamine carbamate, catechol, o-aminophenol or dimethylthiourea; and (17) carbon black, magnesium oxide and tetraethylenepentamine; and the subsequent curing of the compositions. Specifications 838,281 and 891,546 are referred to.
Patent GB-903848-A (GB)
Title: Improvements in and relating to holders for electric lamps or the like
IPC: B60Q3/04
Filed: 1960-07-05
Abstract: 903,848. Lamp holders. UNITED-CARR FASTENER CORPORATION. July 5, 1960 [July 14, 1959], No. 23500/60. Class 38 (1). A lamp holder is adapted for insertion into an aperture 18 in a panel 12 having a printed or etched circuit 14 for connection to a bulb 16. Contact members 22 are formed of resilient metal and each has an extension 42 with a hermispherical portion 44 for sliding engagement with one surface of the panel 12. A finger 38, a pair of spring members 46 and a pair of tabs 58 of the contact are located in a recess 28 of the body 20 of the holder, and the curved portions 56 of the members 46 bear against the contacts of the bulb. The tabs 58 bite into the walls of the recess 28 and retain the contact members 22 in position. The holder body also includes a radial flange 30 and a pair of lateral tabs 32 having inclined surfaces 68. To assemble the holder in the panel 12, the holder is inserted into the aperture 18 with the tabs 32 entering cut-outs 66 and the holder is rotated clockwise. The tabs then ride on to the upper surface of the panel 12 and, the holder having been rotated through 90 degrees, the hemipherical portions 44 will be in contact with the circuit 14.
Patent GB-871925-A (GB)
Title: A process for reclaiming scrap vulcanized rubber
Inventor: DASHER PAUL JAMES
IPC: C08J11/12
Filed: 1957-11-19
Abstract: Natural or synthetic scrap vulcanized rubber, with or without a grinding agent, e.g. whiting, carbon black, is subjected, whilst under compression in a confined space, to a shearing action for 1-4 minutes, the average temperature of the scrap being maintained within the range 150 DEG -250 DEG F., avoiding peaks higher than 320 DEG F., and the portion of the powdered product passing a 20-mesh screen (U.S. Standard) is then subjected to further shearing action, at a temperature of from 300 DEG -400 DEG F., for a time sufficient to devulcanize the rubber which is then sheeted.  The power input during the first grinding step is preferably 3-10 h.p. per pound of scrap and the process may be conveniently effected in a Banbury mixer provided with jacketed walls and hollow rotors through which cooling fluid, e.g. water at 34 DEG -40 DEG F. may be circulated.
Patent GB-1261293-A (GB)
Title: Improved storage rack installation
IPC: B65G1/10
Filed: 1969-05-08
Abstract: 1,261,293. Storage rack installation. FORSTER & CO. May 8, 1969 [May 9, 1968], No. 23538/69. Headings A4B and A4T. A storage rack installation comprises a rank of movable storage racks 10a-10d, disposed in lateral juxtaposition, and capable of being moved, individually or collectively, by drive means to open an access passage between any two racks, wherein each rack has a plurality of wheels, at least one being driven by a reversible motor, and common control unit 21 is provided which determines the direction of rotation of the motor by reference to the position of a two-way switch 14 on each rack, the position of the switch depending on the position of the rack. Each two-way switch may be associated with two sets of relays, which are alternatively operable (12 and 13). The common control unit, correspondingly contains two separately controlled sets of contacts. The twoway switches, 14 are affected by magnets NI5a-d and S16a-d, corresponding to the opposed ends of the traverses of racks 10a-d, respectively. Before the rack can be moved, switch 18 or 18<SP>1</SP> must be closed. Then the correct button 12, or 13 is pressed on the rack which is to move to create the opening. The voltage is then cut off from the button circuits, and the racks affected move automatically to the end of their traverse. The racks are inter-connected by cables 20. The circuit in Fig.3 (not shown) achieves this effect, and also includes various safeguards, e.g. stop bars 9 on each rack which stop the motion if contact is made. The wheels may run on the floor or on tracks, and at least some of them are preferably connected by shafting.
Patent GB-1057835-A (GB)
Title: A coherent stimulated emission device
IPC: H01S5/022
Filed: 1964-06-08
Abstract: 1,057,835. Lasers; semi-conductor devices. GENERAL ELECTRIC CO. June 8, 1964 [June 10, 1963; Aug. 1. 1963], No. 23674/64. Headings H1C and H1K. A semi-conductor laser device 1 is arranged between a pair of large electrically and thermally conductive discs 5, 7 in intimate electrical, thermal and mechanical contact therewith so that heat developed during operation is rapidly removed, permitting continuous, high-power operation. The laser diode may be of GaAs, InSb, InAs, InP, GaSb or alloys therebetween, or may be an alloy of GaAs and GaP. Other suitable materials are PbS, PbSe and PbTe, doped with indium as donor impurity and with excess anion as the acceptor. In Group III-- Group V compounds S, Se or Te may be used as donors and Cd, Hg, Mn or Zn as acceptors. Tin, germanium or silicon may also be used as dopants, the conductivity type being dependent upon the host material. Discs 5, 7 have a similar coefficient of expansion to the laser diode material, and may be of Cr, BeO, W, Mo, Si, diamond, or GeAs, the choice being determined by the temperature of the heat sink. With a GaAs laser diode, discs 5, 7 may be of tungsten plated with nickel coated with a bonding agent, such as silver or gold, and plated with layer of tin for contact with the N-type portion of the diode, and with a layer of indium adjacent the P-type portion. The P-type portion of the diode is first alloyed to the disc 7, together with a thermally conductive, electrically insulating disc 9, e.g. of gallium arsenide, with a slot to accommodate diode 1. The surfaces of disc 9 and diode I are then ground to establish a common plane and disc 5 is alloyed thereto. Diode 1 is preferably less than 200 microns thick. Opposite surfaces perpendicular to the PN junction are made accurately parallel and polished to support a standing wave. Alternatively two surfaces 30, 31 may be provided accurately perpendicular to each other, and subtending angles of 45 degrees to surface 32, from which the radiation is emitted. The diode may be mounted on a thermal sink, consisting of a copper bar mounted beneath a container filled with liquid nitrogen, air, hydrogen or helium. The assembly is then placed in an evacuated enclosure.
Patent GB-501596-A (GB)
Title: Method of and means for conveying wool or other fibrous material
IPC: B65G53/46
Filed: 1937-08-30
Abstract: 501,596. Pneumatic conveyers. McGREGOR, H. W. Aug. 30, 1937, No. 23717. [Class 78 (i)] [Also in Group IX] In apparatus for conveying wool or other fibrous material through a conduit by suction, after the separation of the material from the air stream has taken place, the former is delivered between a pair of moving delivery members mounted in a housing and pressed resiliently into contact with each other, means being provided for forming an air-seal between the delivery members and the housing. In one construction, the delivery members comprise rollers 16, 17, Fig. 2, made of resilient material, such as rubber or sponge rubber, or covered with such material or canvas. The surfaces of the rollers may be corrugated. The spindle 20 of the roller 17 is mounted in bearings 21 which are slidable in guides 22 and are secured to the ends of a U-shaped frame bar 25. Springs 24 maintain the rollers in contact. Curved plates 30, 31 which effect an air-seal are secured to the housing 15 and frame bar 25 respectively. A resilient diaphragm 33 connects the upper edge of the plate 31 to the housing. In a modification, the sealing means comprises a flap 50, Fig. 5, of resilient material which is stiffened by a plate 51. In a further modification, the delivery members are endless belts. Specification 24258/14, [Class 120 (i)], is referred to.
Patent GB-805607-A (GB)
Title: New hydrophenanthrene compounds
IPC: C07D317/72
Filed: 1955-01-14
Abstract: The invention comprises polyhydrophenanthrene compounds of the formula <FORM:0805607/IV (b)/1> in which R is an alkyl group of at most eight carbon atoms and X1 is a ketalized oxo group, R1 is a hydrogen atom or a methyl group, and X is an oxo or hydroxy group. The compounds are prepared by introducing an allyl or methallyl group into the 2-position of the corresponding 1-keto-polyhydrophenanthrenes bearing in the 2-position only a carbo-alkoxy group, preferably by means of an allyl or methallyl halide in the presence of an alkaline condensing agent such as alkali metal alcoholates, amides, hydrides or carbonates or quaternary ammonium bases.  The keto group in the 1-position may subsequently be reduced with a complex hydride of boron, e.g. sodium borohydride, to give the corresponding 1-ol.  In examples: (1) 4bb  - methyl - 2 - carbethoxy - 4b  - ethoxycarboxy - 7 - ethylenedioxy - 1,2,3,4,4aa ,4b,5,6,7,8, 10,10ab  - dodecahydrophenanthrene - 1 - one in dioxane is treated under nitrogen with sodium hydride and then methallyl iodide yielding a mixture of two 4bb -methyl-2-carbethoxy-2-methallyl - 4b  - ethoxycarboxy - 7 - ethylenedioxy - 1,2,3,4,4aa ,4b,5,6,7,8,10,10ab  - dodecahydrophenanthrene - 1 - ones, isomeric at carbon atom 2; (2) as in (1) using methallyl iodide and potassium carbonate, and separating the isomeric mixture by chromatography on alumina; (3) as in (2) but using allyl iodide (or allyl chloride and KI) to yield the corresponding 2-allyl compounds; (4) 2a -methallyl-2b -carbethoxy - 4b  - ethoxycarboxy - 4bb  - methyl - 7 - ethylenedioxy - 1,2,3,4,4aa ,4b,5,6,7,8,10,10ab -dodecahydrophenanthrene-1-one is reduced with sodium borohydride in ethanol and the product chromatographed on alumina, giving the corresponding 1-ol compound.  Specifications 805,605, 805,606, 805,608 and 805,609 also are referred to.
Patent GB-896165-A (GB)
Title: Improvements relating to waveguides
IPC: H01P1/213
Filed: 1958-07-23
Abstract: 896,165. Frequency changer circuits. TELEFUNKEN G.m.b.H. July 23, 1958 [July 23, 1957], No. 23798/58. Class 40(6). [Also in Group XL(b)] A micro-wave bridge mixing head employs crystal diodes D 2 , D 3 ; connected with opposite polarity in flat waveguides H 2  and H 3  the respective waveguide impedances are matched and the device may be used in microwave receivers. Thus the aerial input is connected to waveguide 1, in the region of a probe from coaxial line 4 which is connected to an oscillator the waveguide branches abruptly into smaller waveguides 2, 3 containing the crystal diodes D 2 , D 3 , the output signal being taken off as shown.
Patent GB-1503958-A (GB)
Title: Bush
IPC: H02G3/02
Filed: 1975-06-02
Abstract: 1503958 Grommets M HAMACHER 2 June 1975 [27 March 1975] 23806/75 Heading F2H [Also in Division H2] A bush 1 for carrying electrical cables into appliances comprises a metal or synthetic material body having a flared cable entry aperture 10; an annular groove 3 and an annular bevel 4, for fixing the bush, in use, into a socket in the appliance; and a further annular groove 5 in which a yoke (Fig. 3) can be located, the annular groove aligning with grooves in the socket and the yoke lockable to the bush to lock the bush against rotation in the socket. The cable may be held in place by casting a resin or other material between it and the bush, and the retention may be aided by cutting grooves in the outer cable and inner bush surface before casting or by using a compound for the casting which partly dissolves the cable sheath before setting.
Patent GB-706803-A (GB)
Title: Improvements relating to egg-whisks
IPC: A47J43/10
Filed: 1951-10-13
Abstract: 706,803. Mixing appliances. GILL, E. Aug. 27, 1952 [Oct. 13, 1951], No. 23892/51. Class 86 An egg-whisk comprises a rotatable spindle having attached to its lower end a plurality of toroidal wire cages with the turns of each cage partly projecting between the turns of an adjacent cage: In Fig. 1, a pair of similar upper and lower toroidal wire cages 11, 12 are secured to a rotatable spindle 9 by sleeves 22 having castellated end edges 23, as described in Specification 658,555, so that the turns of the cage 11 partly project between, and alternate with, the turns of the cage 12. The spindle 9 is supported for rotation in a frame 1 and carries a pinion 13 with inclined teeth 14 which are engaged by teeth 16 pressed out from a driving wheel 15 mounted for rotation with a pivot rod 17 which has a cranked extension 20 to the end of which is attached an operating handle 21. The castellated sleeves 22 may be replaced by cylinders of closely spaced wire turns encircling the inner peripheries of the cages. In an alternative embodiment the spindle carrying the cages may have a quick pitched thread forming an Archimedian screw which is. rotatably received at its upper end within a tubular handle carrying part similar to that shown in Specification 658,555 so that up and down movement of the handle relatively to the stem causes rotation of the cages. Three cages may be provided, the turns of the intermediate cage projecting between and alternating with the turns of the upper and lower cages. Specification 706,802 also is referred to.
Patent GB-380776-A (GB)
Title: Improvements in and relating to submarine cables
IPC: H01B7/282
Filed: 1932-08-26
Abstract: 380,776. Armouring cables. FELTEN & GUILLEAUME CARLSWERK AKT.-GES., M³lheim, Cologne, Germany. Aug. 26, 1932, No. 23962. Convention date, Oct. 6, 1931. Addition to 295,923, [Class 36, Electricity, Conducting &c.]. [Class 36.] A water-resistant covering consisting of organic substances capable of fusing without decomposition, such as petroleum-asphalts or heavy metal salts of high molecular fatty acids, e.g. lead linoleate or copper stearate, is applied to the profile interengaging steel and aluminium wires of the main invention in place of the guttapercha, rubber or like covering.