baber/WOPTO huggingface dataset:
Patent GB-176127-A (GB)
Title: An improved method or means for determining the direction of propagation of electromagnetic waves
IPC: G01S1/02
Filed: 1920-11-30
Abstract: 176,127. Murray, J. Erskine-, and Robinson, J. Nov. 30, 1920. Aerials; directive signalling.-The direction of the line of propagation of electromagnetic waves is determined by obtaining both the directions of the magnetic force and of the electric force in the plane of the wave-front and taking a line normal to the two, or by obtaining either of these directions and the plane of motion of the force acting in each direction, or by obtaining the line of intersection of the two planes of motion. A coil, loop, or equivalent means is combined with a condenser aerial, a Hertzian doublet, or a straight wire aerial, each being mounted so as to be rotatable, together or separately, about an axis which can lie in any direction in space. In an example, Fig. 1, a condenser aerial 9 which may consist of capacity areas connected by a conductor having inductance, and a loop aerial 8 are mounted so as to rotate together on an axis 7 mounted on gimbals 3, 4, both aerials being connected to detecting or receiving circuits. Alternatively, a ball-and-socket joint may be used. Two methods of using the apparatus are described. Instead of a single coil and a single aerial as shown, a plurality of coils or of condenser aerials arranged at an angle with one another and connected up through reversing or change-over switches may be used. Unidirectional determinations may be obtained by comparison of the phases of the current in the coil and in the straight aerial, for example, by rotating the coil, when in its maximum or minimum position, through 180‹.
Patent GB-1025908-A (GB)
Title: New amino-steroid compounds and processes for their preparation
IPC: C07D207/28
Filed: 1963-08-27
Abstract: The invention comprises 20-amino-pregnanes having the general formula <FORM:1025908/C2/1> (wherein X is a group b -4(OR3), R3 being a hydrogen atom or an acyl radical Ac derived from a substituted or unsubstituted lower organic carboxylic acid having from 2-18 carbon atoms, R and R1 are the same or different and each is a lower alkyl, aryl or aralkyl having 1-4 carbons in the alkyl chain, or together they form a heterocyclic ring system; and R2 is a lower alkyl group having from 1-4 carbon atoms), and acid addition salts thereof and processes for the preparation thereof by reducing a 20-amino-pregn-5-ene having the formula <FORM:1025908/C2/2> (wherein X, R, R1 and R2 are as defined above) or an acid addition salt thereof, by catalytic hydrogenation, e.g. with platinum dioxide. The preferred starting compound is 3b -hydroxy-20-methyl-20-dimethylamino-pregn-5-ene which may be obtained as described in Specification 1,025,905.  Pharmaceutical compositions having vasodilative spasmolytic action and containing compounds having the first of the above formul\SA or acid addition salts thereof, are administered orally as tablets, powders, solutions or suspensions, by injection in sterile aqueous and non-aqueous solutions, via the body cavities in the forms of suppositories and pessaries, or externally as a powder, lotion, cream or ointment.
Patent GB-927966-A (GB)
Title: Catalyst and process for polymerization of olefins
IPC: B01J21/12
Filed: 1961-09-22
Abstract: A polymerization catalyst comprises chromium oxide in which at least part of the chromium is in the hexavalent state, and ammonium silicofluoride heat-treated to a temperature up to 1,500 DEG F., deposited on a support material comprising at least one oxide selected from silica, alumina, zirconia, thoria or complexes thereof. The catalyst may be made by (1) depositing chromium oxide or a compound of chromium calcinable to chromium oxide on the support material, heating the resulting composite to ensure that at least part of the chromium is in the hexavalent state, and subsequently heating the composite in the presence of ammonium silicofluoride, or (2) depositing the ammonium silicofluoride with the chromium compound and heat-treating the composite, or (3) depositing the ammonium silicoflouride on the support material, heat-treating the composite, then depositing a chromium compound, and again heat-treating.  The chromium compound may be chromium oxide, chromic nitrate, chromic sulphate, ammonium chromate, or chromium carbonate.ALSO:Polymers of 1-olefines are made by contacting at least one olefine, under polymerizing conditions with a catalyst (see Group III), which comprises a chromium oxide in which at least part of the chromium is in the hexavalent state, and ammonium silicofluoride heat-treated to a temperature up to 1500 DEG F., deposited on a support material comprising at least one oxide selected from silica, alumina, zirconia, thoria, or complexes thereof.  The polymerization may be effected in the gaseous phase, liquid phase, e.g. in a hydrocarbon diluent, or gas-liquid phase. The catalyst may be used as a fixed bed, a gravitating bed, or a fluidized bed.  The 1-olefin may be ethylene, propylene, 1-butene, 2-butene, isobutylene, 1-pentene, 1-hexene, 4-metyl-1-penten, 1-octene, 1-dodecane, or 1,3-butadiene. Exemplified copolymers are ethylene and 1-butene, ethylene and propylene, ethylene and 1-pentene, and ethylene and 1-octene.
Patent GB-1483091-A (GB)
Title: Apparatus for winding strands
IPC: B65H54/74
Filed: 1974-08-02
Abstract: 1483091 Strand winding apparatus P P G INDUSTRIES INC 2 Aug 1974 [3 Aug 1973] 34107/74 Heading D1J The invention relates to a strand winding apparatus comprising a motor having a stationary shaft, a staton 22 rotatable about said shaft, a plurality of fingers 38 and wedges 46 disposed around the periphery of the stator 22, the fingers 38 and wedges 46 being so constructed that when they move radially outwardly of the stator 22, see left-hand side of Fig. 2, they present a substantially unbroken, smooth, cylindrical surface. According to the invention (a) the stator 22 is formed with a plurality of channels 44, 45 and slots 42 in which the fingers 38 and wedges 46 are received; (b) each finger 38 has sloping side portions 40, 41 and a centrally disposed tongue 39, the tongue 39 being slidable in one of the slots 42; and (c) the stator 22 has tongue members 43 engaging in slots 49 in the wedge members 46, the side portions 40, 41 and the radial axis of the adjacent tongue member 43 forming a nonlocking angle between the wedges 46 and the fingers 38. There may be magnetid means on the stator 22 and on the fingers 38 for holding the fingers 38 against the stator 22 when the apparatus is at rest. The apparatus is stated to be suitable for winding glass at a speed of 10000 to 18000 feet per minute.
Patent GB-1350859-A (GB)
Title: Acousto-optic apparatus
IPC: G02F1/11
Filed: 1972-07-21
Abstract: 1350859 Television, copying telegraphy &c. HEWLETT-PACKARD CO 21 July 1972 [22 July 1971] 34233/72 Heading H4F An acousto-optic device comprises a photoelastic, optically birefringent medium having a light input face which is inclined with respect to the light path in the medium, the inclined face being associated with a prism for increasing the optical beam aperture of the device. In an acoustic-optic tunable band-pass filter using collinear diffraction the opposite end faces of crystal 4 are inclined about orthogonal axes X and Z. Prism 2 has an input face 8 normal to incident light beam 6, polarized in the Z direction, and an output face 11 parallel to and spaced from input face 12 of the crystal. Faces 11, 12 are separated by index-matching medium 9. An acoustic transducer 13 produces an acoustic shear wave S1 for reflection from face 12 to form shear wave S2 parallel to the light path through the crystal. Prism 3, similar to 2, passes the light beam to Rochon or Glan- Taylor prism which divides the polarizationrotated light 18 in the filter pass band from the unrotated beam portion 19. Production of acoustic resonances by standing wave formation is reduced by the non-parallel inclined faces of crystal 4. Preferably the device is formed from a parallel-ended crystal by cutting inclined slots near the ends to define the prisms of identical material to the interaction medium and with aligned optic axes. The index-matching medium may be a hardenable cement or a liquid having a refractive index n 2  related to that of the crystal and the prisms, n 1  by the relation n 2  = n 1  tan # 1 , where # 1  is the angle between the acoustic wave axis S2 and the normal to the inclined crystal face. For a CaMoO 4  crystal the input face is inclined at 45 degrees while the output face is at the Brewster angle, 53 degrees, to prevent light beam reflection. Preferably the input and output faces of the prisms, and the input face of the crystal have anti-reflection coatings. The prisms and/or the matching medium may have regions of different transparency to act as a blocking filter. The prisms may be of materials having different refractive indices to the crystal or may be cut at appropriate angles to provide pre- and/or postdispersion of the beam, or the crystal or the prisms may have curved faces to provide focusing. The indexes of refraction of the matching media may be selected to allow transmission through any or all the interfaces at the Brewster angle. The acoustic properties of the matching media may be chosen to alter the acoustic beam pattern, e.g. to absorb the acoustic wave at the crystal output face.
Patent GB-188997-A (GB)
Title: Improvements in or relating to yarn winding machines
IPC: B65H54/16
Filed: 1921-12-20
Abstract: 188,997. Wildt & Co., Ltd., and Wildt, E. Dec. 20, 1921. Winding-machines. -In yarn-winding machines of the vertical spindle type the disc 5 which by contact with the cop, causes the elevation of the yarn guide is mounted or a plain rod 1 and actuates the guide carrier 6 on the - screwed rod 3 through a g e a r wheel 8, an arm 6<a> on the carrier engaging a collar which supports the disc 5.
Patent GB-282449-A (GB)
Title: Negative electrode for electric accumulators
IPC: H01M4/64
Filed: 1927-12-19
Abstract: 282,449. Pouchain, A. Dec. 20, 1926, [Convention date]. Electrodes. - The negative electrode of an accumulator consists of a metal plate 6, which may be of silvered brass, which is slotted so as to provide a number of parallel strips 7. Each strip is covered with a correspondingly shaped piece of zinc, and the electrode is mounted in a grooved metal frame 9 carrying a lug 10 for a terminal.
Patent GB-950534-A (GB)
Title: Improvements relating to hot plates for gas cookers
Inventor: MCFALL DONALD JOHN
IPC: F24C15/10
Filed: 1961-09-26
Abstract: 950,534. Gas cooking stove hot plates. SIDNEY FLAVEL & CO. Ltd. Sept. 20,1962 [Sept. 26, 1961], No. 34365/61. Heading F4W. Cooking utensils are supported on the hot plate of a cooking stove by a number of elongated U-shape members, Fig. 1, of heat resisting rod or wire having pegs 13 formed at the free ends of the limbs. The pegs 13 enter holes formed in the raised sides of the hot plate, or in a removable bar 15, and the closed end 12 of the U rests on the sides 16 of the hot plate or on the removable bar 15. The holes for the pegs 13 are preferably at a slightly greater distance apart than the free spacing between the prongs so that the supports are resiliently connected to the hot plate.
Patent GB-212971-A (GB)
Title: Improvements in or relating to submarine mines
IPC: F42C14/04
Filed: 1922-12-16
Abstract: 212,971. Vickers, Ltd., and Pratt, H. B. Dec. 16, 1922. Mines, marine.-Relates to mines in which a sliding rod is controlled by the opposing forces of a spring and the tension of the mooring cable to arm the firing-mechanism when the mine is moored and disarm the mechanism when the mine is unmoored. According to the invention, the tension of the mooring cable is adapted to urge the rod upwards into the mine, to arm the firing-device. As shown in Fig. 1, the mooring cable 8 is attached to one end of a lever 7 which is pivoted at a to a box-like casting 14 secured to the mine 1 and bears at its other end 9 on a head nut 10 on the sliding rod 6. When the mine is moored, the tension of the cable 8 causes the lever 7 to press the rod 6 upwards towards the inside of the mine. This brings a soluble plug 31 carried by the rod 6 opposite windows 35, which admit water to dissolve the plug. When the plug is dissolved, the rod is pushed further up, and a flexible sealing-diaphragm 13 thereon is pressed against a conical seat 13a. The rod 6 is coupled to a plunger 16 within the mine, which plunger is formed with arms 16<a>, Fig. 5, carrying insulated contacts 16b and with a boss 22.a guided by a bolt 20. When these parts rise with the rod 6, a pivoted catch 26 is deflected by the boss 22a and releases the primer 4, which falls to the firing-position on the electric detonator 5, and the insulated contact-pieces 16<b> are brought between spring plungers 23 and complete the firing-circuit, so that the mine is fixed if a battery is formed by the breaking of a horn on the mine in a known way. The tension of the mooring cable, assisted by the hydrostatic pressure on the diaphragm, when one is used, is opposed by a spring, which, if the mine becomes unmoored, forces the plunger 16 back and breaks the firing- circuit, thereby rendering the mine safe. The detonator 5 is connected up to the firing-circuit by means of lateral spring plungers which bear on contact rings on the detonator.
Patent GB-426428-A (GB)
Title: Automatic milk bottle holder
IPC: A47G29/24
Filed: 1933-12-07
Abstract: 426,428. Milk-bottle holders. LACEY, E. F., 101, Peckham Road, London. Dec. 7, 1933, No. 34391. [Class 44] A milk - bottle holder comprises a U - shaped member and a turnstile TS. When the door to which the device is secured is closed, anti - clockwise rotation of the turnstile is prevented by a plunger P which rotates a spring pressed arm R<1> thereby releasing a spring pressed arm R<2> to engage a notch in the turnstile.
Patent GB-521821-A (GB)
Title: The preparation of new therapeutically useful heterocyclic compounds
IPC: C07D233/88
Filed: 1938-11-28
Abstract: 521,821. Sulphonamides. MAY & BAKER, Ltd., EWINS, A. J., and ASHLEY, J. N. Nov. 28, 1938, No. 34621. [Class 2 (iii)] p-Aminobenzene-sulphonamide derivatives of glyoxaline are made by condensing an aminoglyoxaline with a benzenesulphonyl halide or anhydride containing an acylamino group in p-position, and subsequently converting the acylamino group into an amino group by hydrolysis. The products may be treated with alkyl, aryl or aralkyl halides or alkyl sulphates to introduce alkyl, aryl or aralkyl groups, or the intermediate acylamino compounds may be treated with such agents prior to removal of the acyl group. In examples, p-acetylaminobenzenesulphonyl chloride is condensed with 2-aminoglyoxaline hydrochloride in pyridine and the product, either with or without treatment with dimethyl sulphate hydrolysed by boiling with caustic soda solution. Specifications 512,145 and 517,272 are referred to.
Patent GB-483812-A (GB)
Title: Improved method of heat generation for permanent waving of hair and heat generator for carrying out said method
IPC: C09K5/16
Filed: 1937-12-15
Abstract: 483,812. Generation of heat by chemical action. KJENBERG, S. Dec. 15, 1937, Nos. 34704 and 34705. Convention dates, Dec. 15, 1936 and Dec. 2, 1937. [Class 64 (ii)] A heat generator for waving the hair consists of an absorbent sheet impregnated with a solution of cupric chloride, which is immersed in a solution of ammonium chloride and ammonium nitrate, and placed in contact with aluminium foil. The ammonium salts retard the commencement of the chemical action. Sodium salicylate may be added to the solution of ammonium salts to restrain the intensity of the heat generation.
Patent GB-446304-A (GB)
Title: Improvements relating to ice cream refrigerators
IPC: A23G9/08
Filed: 1934-12-04
Abstract: 446,304. Ice - cream conservers. WILSON, J., 32, St. James' Road, Church, Lancashire. Dec. 4, 1934, No. 34770. [Class 29] An ice-cream conserver comprises a cream container b and a heat-insulated metal freezing-mixture container the inner frusto-conical wall of which is integral with the outer cylindrical wall thereof.
Patent GB-970933-A (GB)
Title: Improvements in waveguide junctions
Inventor: CLARRICOATS PETER JOHN BELL
IPC: H01P5/08
Filed: 1960-10-11
Abstract: 970,933. Matching waveguide impedances. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Sept. 29, 1961 [Oct. 11, 1960], No. 34788/60. Heading H1W. Two dissimilar waveguides 1, 2 are coupled by a dielectric rod 3 the cross-section and permittivity of which are great enough to ensure that the wavelength #g of energy guided by the rod is less than its free space wavelength # 0 . Preferably, the cross-section of the rod should equal the mean between the cross-section of the smaller guide and the cross-section of the rod for which # g =# 0 . This choice of dimensions ensures that the discontinuity in the waveguide walls has no effect. The rod may be made of polystyrene and may have a shape similar to that of the waveguides or, where the waveguides are of dissimilar shape, may have a shape intermediate between the two, e.g. a polygonal rod between rectangular and circular waveguides. The rod may be held in a foamed polystyrene support 6. It may have stepped or tapered ends.
Patent GB-1029478-A (GB)
Title: Improvements in and relating to reading rate controlling machines
IPC: G09B17/04
Filed: 1963-09-03
Abstract: 1,029,478. Copy-holders. D. R. GOOCH. Sept. 3, 1963, No. 34814/63. Heading B6W. A reading rate controlling machine comprises a housing 10, Figs. 1 and 4, with a slot 11 through which projects a bracket 12 having a shutter 19 pivoted thereto for passing over a book 20 at a speed controlled by driving mechanism within the housing. The bracket 12 is moved manually to the left in Fig. 4 against the action of a clock spring 30 and is returned by the spring, which is secured to and winds round a drum 31. A cord 40 attached to the bracket 12 passes round a drum 41 and is wound around and attached to a drum 39. The drums 31, 39 are drivingly associated by a clock spring 35 which allows relative movement between them to allow for variation in the effective diameter of the drum 31. The drum 41 is in driving association with a copper disc 54, and the speed of movement of the shutter is controlled by a magnet 56, the distance between which and the disc 54, on which it exerts a drag, is adjusted by a finger wheel 63 carrying a cam 59.
Patent GB-348148-A (GB)
Abstract: 348,148. Illuminating translucent pictures. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, 13A, Emmasingel, Eindhoven, Holland. Feb. 7, 1930, No. 4228. Convention date, Feb. 20, 1929. [Class 11.] Apparatus for displaying transparencies and photographic negatives by transmitted light comprises one or more tubular lamps 6, 7 arranged in compartments behind the front wall of the apparatus alongside the transparent portion 2, so that the front wall is illuminated solely by light reflected from the diffusing reflector 8. The plate 2 may be frosted. The transparency is placed at the bottom behind a rim 3 and at the top behind a resilient rim 4 pressed by cams 5.
Patent GB-1169047-A (GB)
Title: Apparatus for improved Contact of Fluidized Materials
IPC: F27B15/02
Filed: 1967-07-28
Abstract: 1,169,047. Solid/gas contact apparatus. ESSO RESEARCH & ENG. CO. 28 July, 1967 [12 Aug., 1966], No. 34854/67. Heading B1F. An apparatus suitable for the fluidised bed reduction of a descending stream of iron ore by an ascending stream of hot CO 2  and H 2  contains transverse plates 201-206 containing frusto pyramidic bin-like modules with perforated sides and a lower outlet 23. Outlet 23 may have a cross-sectional opening 1.3 to 5 times that of a side wall perforation 22, and the total area of the gas holes in a plate may be about 5-20% the total cross-sectional area of the plate.
Patent GB-426617-A (GB)
Title: Improvements in or relating to guards for railway points
IPC: E01B7/20
Filed: 1934-12-04
Abstract: 426,617. Guards for railway points. P. & M. CO. (ENGLAND), Ltd., and WINBY, L. P., 39, Grosvenor Place, London. Dec. 4, 1934, No. 34874. [Class 104 (i)] In a guard for points of the kind described in Specification 248,582, [Class 104 (ii)], the guard plate 1 is attached to a track rail 2 or guard rail by bolts 3, and has flanges 5 engaging the rail head and a seating member 6. Washers 14 are arranged between the rail web and the bolt nuts to cause the nuts to stand clear of the rail. The bolt heads 4 seat in an external recess 12 of the plate, and the edges and outer surfaces of the plate are curved longitudinally to prevent shock when the wheels engage the plate. The plate may be reversed when worn at the top.
Patent GB-469587-A (GB)
Title: Improvements in or relating to pianofortes
IPC: G10C3/02
Filed: 1936-12-18
Abstract: 469,587. Pianofortes. RIPPEN, P. T., and RIPPEN, J. J., (trading as RIPPEN, D. A., [Firm of]). Dec. 18, 1936, No. 34888. Drawings to Specification. [Class 88 (ii)] On the upper side the casing of an upright pianoforte curves downwardly, and on the lower side curves upwardly, towards the treble end.
Patent GB-1489300-A (GB)
Title: Process for the selective disproportionation reaction of olefins
IPC: C07C6/04
Filed: 1975-08-22
Abstract: 1489300 Disproportionating olefins AGENCY OF INDUSTRIAL SCIENCE & TECHNOLOGY 22 Aug 1975 [26 Aug 1974 6 Sept 1974 7 Dec 1974] 34959/75 Heading C5E Olefins are disproportionated in the gaseous phase in the presence of a supported tungsten oxide catalyst together with ammonia and/or at least one amine and/or hydrocarbon halide. Suitable amines are n-butylamine, isobutylamine, diethylamine, triethylamine and piperidine. Suitable hydrocarbon halides are chloroform, CCl 4 , dibromomethane, 1,1-dibromoethane and butyl bromide. The ammonia, amine, or halide may be used in amount 0À001- 5 mol per cent based on the starting olefin. The reaction may be carried out at 250-500 C. using SiO 2  or Al 2 O 3  as catalyst supports. The olefin starting material may be propylene, 1- butene or a mixture of 2-butene and isobutene.
Patent GB-776192-A (GB)
Title: Improvements relating to textile gill drawing or spinning machines
Inventor: ROBSON WILLIAM SELWYN
IPC: D01H5/04
Filed: 1954-12-03
Abstract: 776,192. Gill-boxes. FAIRBAIRN LAWSON COMBE BARBOUR, Ltd. Sept. 13, 1955 [Dec. 3, 1954], No. 35019/54. Class 120 (1). A faller bed of the type having screwdriven fallers and used in drafting textile fibres is provided with rubber or like vibrationabsorbent blocks, such as 12, located on or under slide members 7, 8, 9, 10 on which the fallers 5, 6 slide to cushion the impact of the fallers. Each impact surface is co-planar with the sliding surface with which it is associated. In one form, the slide is reduced in thickness at one end and has attached to the reduced area a thin layer 12 of rubber with a facing 13 of metal to reduce wear. In another embodiment, the slide rests on a block of resilient material at the end receiving the impact of the fallers, the other end of the slide being pivoted.