baber/WOPTO huggingface dataset:
Patent GB-396707-A (GB)
Title: Improvements relating to microphone amplifiers
IPC: H04R23/02
Filed: 1932-02-05
Abstract: 396,707. Magneto-microphonic relays. ELECTRICAL RESEARCH PRODUCTS, Inc., Broadway, New York, U.S.A.- (Assignees of Bennett, A. F.; 103, 126th Street, Richmond Hill, New York, U.S.A.) Feb. 5, 1932, No. 3518. Convention date, Feb. 27, 1931. [Class 40 (iv).] In a magneto-microphonic amplifier in which the magnetic and microphone elements have separate diaphragms 16, 10, separated by a small air space, the magnetic element comprises a magnetic member 18 containing an insulated flat coil 19 and provided with an adjustable hollow magnetic plug 26 which may be fixed after adjustment by cement 51, whilst the microphone element comprises a carbon container 4 which may be filled under pressure through hole 6, a brass member 7 with a tapered central opening which confines the contact of the carbon to the centre of the diaphragm 10, an annular member 9 of ceramic material, and a plurality of washers 11 to damp the vibrations of the diaphragm. The whole is contained in a brass housing 1 fitted with a grooved rubber mounting ring 42. Fig. 3 shows a deaf set comprising a microphone mounted behind a grill 45, an adjustable rheostat 46, a receiver 41, a terminal board 49, a battery plug 50, and a relay held by its rubber ring 42 by means of a spring clip mounted on a bracket 48.
Patent GB-306268-A (GB)
Title: Loud speaker apparatus for wireless telephony
IPC: H04R1/02
Filed: 1928-02-06
Abstract: 306,268. Bryan, W. Feb. 6, 1928. Flower vases.-One side 5 of a vase-shaped body acts as a diaphragm of a loud speaker, the operating mechanism of which is carried on the back 4 of the vase. The vase may be made of earthenware, wood or parchment attached to a wire or other frame and the neck of the vase may be employed to hold flowers &c.
Patent GB-495468-A (GB)
Title: Lubrication of ball and roller anti-friction bearings
IPC: F16N37/00
Filed: 1937-02-08
Abstract: 495,468. Lubricating bearings ; syringes. RYAN PROPRIETARY, Ltd., W. L. Feb. 8, 1937, No. 3673. Void. Convention date, Feb. 15, 1936. [Class 12 (iii)] [Also in Group XXVIII] A ball or roller bearing 21 is filled with lubricant by fitting it between conical faces formed on the end 9 of a grease chamber 5 and on a nut 15. The latter is threaded on a rod 12 carried by a piston 14 in the container 5. As the nut 15 is rotated grease in the container 5 is forced through a hole 11 in the top of the container to the bearing.
Patent GB-640986-A (GB)
Title: Improvements in or relating to arrangements for transmitting electric signals occupying a wide frequency band over narrow band circuits
Inventor: HILL STUART SEYMOUR
IPC: H04B1/66
Filed: 1947-02-07
Abstract: 640,986. Transmission systems. STANDARD TELEPHONES & CABLES, Ltd. Feb. 7, 1947, No. 3709. [Class 40 (iv)] A broadband signal, i.e. 100-6000 cs., is divided into several frequency bands for transmission over separate channels having narrow frequency limitations, i.e. 300-3200, frequencies outside the "cut-off" frequencies of the channels being shifted for transmission by two successive stages of frequency changing in one of which the oscillator frequency may be adjusted to suit the cut-off frequency of the channels. The signal is applied via the amplifier 5 and passes via the low pass filter 6 and the hybrid coil 7 to the modulators 16 and 10 having oscillators 17 and 11 of 11.5+fc. (the cut-off frequency) and 12 kc/s. respectively, a pad 9 being introduced in the path carrying the lower frequencies to equalize the levels of the signals over the two channels. The outputs from the modulators 16 and 10 selected by the band-pass filters 18 and 12 having pass bands of 8.8-11.7 and 5.7-11.9 respectively are applied to the modulators 19 and 13 passing to both channels, bands of 300-3200 cs. which are each demodulated at the receiving end by two stages of demodulation, and combined in the hybrid 28 to reproduce the original signal. The L.P. filter 26 removes the upper sideband and programme leak from the demodulator 24, and the filter 27 prevents beating and intermodulation between unwanted products of the two channels, while pad 33 restores the two sections of signal to their proper relative levels. The oscillator 8 generates test frequencies, say 1 kc., with prominent 2nd and 4th harmonics for transmission over the channels, the received signal being checked on the monitoring circuit 36 for frequency shift.
Patent GB-1006203-A (GB)
Title: Sealing combination for curtain-walls
IPC: C09J123/22
Filed: 1963-09-25
Abstract: A combination of sealants for building materials comprises (a) a bedding product comprising butylene high polymers of M.W. 1500-2500; powdered CaCO3; pulverulent neutral rock; and drying oil or fatty resinic, tall oil or naphthenic acid; and (b) an obturating product comprising a highly plastified polyvinyl acetate aqueous emulsion and a pulverulent neutral rock, and, optionally an aqueous alcohoholic solution of the ammonium salt of a copolymer of polyvinyl acetate and crotonic acid and a concentrated aqueous emulsion of natural rubber. The product may also comprise coloured fillers, pigments or dyes, e.g. iron oxide or cadmium sulphide, or aluminium powder, or granulous fillers, e.g. sand and/or cement, or plaster.  The obturating product (b) may be incorporated into concrete which is then coated with the combination. The product may be used for sealing glass and metal, and for sealing wood, concrete, stone, brick, plastics, and glass, and for water-proofing paper, cardboard, plaster and leather.ALSO:Glass, particularly glass sheets, may be sealed to metal, wood, concrete, stone, brick, and plastics by a combination of sealants comprising (a) a bedding product comprising butylene high polymers of M.W. 1500-2500; powdered CaCO3; pulverulent neutral rock; and drying oil, or fatty, resinic, tall oil or naphthenic acid; and (b) an obturating product comprising a highly plastified polyvinyl acetate aqueous emulsion and a pulverulent neutral rock, and, optionally, an aqueous alcoholic solution of the ammonium salt of a copolymer of polyvinyl acetate and crotonic acid and a concentrated emulsion of natural rubber.  The product may also comprise coloured fillers, pigments or dyes, e.g. iron oxide or cadmium sulphide, or aluminium powder, or granulous fillers, e.g. sand and/or cement, or plaster.  Concrete may incorporate the obturating product (b), and is then coated with the combination.ALSO:Paper, cardboard, leather, plaster and concrete may be waterproofed by coating with a combination of sealants comprising (a) a bedding product comprising butylene high polymers of m.w. 1500-2500; powdered CaCO3; pulverulent neutral rock; and drying oil, or fatty, resinic, tall oil or naphthenic acid; and (b) an obturating product comprising a highly plastified polyvinyl acetate aqueous emulsion and a pulverulent neutral rock, and, optionally, an aqueous alcoholic solution of the ammonium salt of a copolymer of polyvinyl acetate and crotonic acid and a concentrated emulsion of natural rubber.  The product may also comprise coloured fillers, pigments or dyes, e.g. iron oxide or cadmium sulphide, or aluminium powder, or granulous fillers, e.g. sand and/or cement, or plaster.
Patent GB-1063354-A (GB)
Title: Process for the reduction of barium sulphate
Inventor: MAIWALD ROLF
IPC: C01B17/44
Filed: 1966-01-27
Abstract: Barium sulphide may be prepared by reduction of pelletized barium sulphate in a fluidized bed at 900-1100 DEG  C.  The reducing agent may be solid or gaseous.  Thus carbonaceous material may be incorporated into the pellets to serve as:  (a) reducing agent and fuel;  (b) reducing agent and part of fuel requirement;  (c) only reducing agent. In the case of (b) and (c) fuel requirements may be met by using additional reducing gas. The reduction of the pelletized barium sulphate may also be accomplished wholly by gaseous reducing agents, a part of the gas used also serving as fuel.  The gaseous fuel may, equally effectively, be burnt in the fluidized bed or in a burning chamber below the grate.
Patent GB-961588-A (GB)
Title: A stationary-blade carrier for axial-flow turbines
IPC: F01D25/26
Filed: 1961-02-01
Abstract: 961,588. Turbines. LICENTIA PATENTVERWALTUNGS-G.m.b.H. Feb. 1, 1961 [Feb. 5, 1960], No. 3796/61. Heading FIT. An axial flow steam turbine comprises a pack 11 of coaxial annular members, some of which, at least, are stator blade carriers 12-17, and an annular chamber 38 formed between the pack 11 and the interior of the turbine casing 18, 19 bounded at one end of the pack by a resilient ring 20. An end face of the pack 11 has a narrow raised ring 31 acting as a seal and which is pressed against the ring 20 by the action of a surface 42 of the casing part 19 bearing on the pack. Further sealing is provided by a projection 37 on the surface 42. The pack is centered by tongue and groove arrangements 34, 35, and the chamber 38 receives steam through extraction passages 39. In alternative constructions the ring 20 may be laminated, inegral with the casing or of U-shaped crosssection with the open end of the U radially outwards.
Patent GB-1417206-A (GB)
Title: Colour former compositions for pressure sensitive recording paper
IPC: C09K3/00
Filed: 1973-01-25
Abstract: 1417206 Clay dispersions MIZUSAWA KAGAKU KOGYO KK 25 Jan 1973 [28 Jan 1972 16 Feb 1972 6 March 1972] 3800/73 Heading C1A [Also in Division D2] An aqueous composition comprises a dispersion of particles at least 10% of which have a particle diameter of not more than 1 micron, of a clay mineral of the montmarillonite group, a clay mineral of the kaolinite-halloysite-type group, or an acid treated product of these clay minerals in an aqueous medium which may contain up to 30% by wt. of the medium of a watermiscible organic liquid, the composition having a water affinity coefficient of 1À3 to 3 where the water affinity coefficient kw is defined as (w 1 - w 2 )/w 1 - w 2  (5À85 x 10<SP>-2</SP> Î Ax/5) where w 1  is the weight in gms. of a precipitated portion of a sample remaining in a centrifugal tube when a 5 gram sample of the clay dispersion having a concentration of 10% by weight the pH of the sampled dispersion having been adjusted to 2Œ0À5 with HCl or NaOH, is taken into the centrifugal tube and rotated in a centrifugal separator for 10 mins. under a force of 800 G and separating the supernatant liquid; w 2  is the weight in gms. of the solid obtained by drying the precipitated sample at 500‹ C. to an equilibrium moisture content, A is the normality of the pH adjusting solution used, x is the amount in millilitres of the pH adjusting solution used. Preferred values of kw are 1À5 to 2À7. At least 15% by weight of the dispersed clay may have a particle diameter of 1 micron or less as determined by the Andreasen pipette method. The preferred aqueous medium is water, and the preferred concentration of organic liquid does not exceed 15% by wt. The concentration of clay in the dispersion may be 10 to 30% by wt. and the dispersion may be prepared by drying the clay (which expression includes their acidtreated products) at a temperature not exceeding 650‹ C., then wet pulverizing the clay in water, in an organic liquid, or in a mixture of these and replacing the medium by the specified continuous phase. The dispersion may be used for coating paper sheets.
Patent GB-801027-A (GB)
Title: Fertilizers containing ammonium nitrate, dicalcium phosphate and calcium sulphite
IPC: C05B11/06
Filed: 1957-02-04
Abstract: In the production of a fertilizer by decomposing phosphate rock with nitric acid and precipitating calcium compounds by ammoniating the resulting solution, calcium nitrate is converted into ammonium nitrate by adding ammonia and in addition, sulphur dioxide, ammonium sulphite or ammonium bisulphite.  The resulting fertilizer contains dicalcium phosphate, ammonium nitrate and calcium sulphite and the phosphate component is said to remain soluble in ammonium citrate when added to soil.  In carrying out the process according to the invention, natural phosphate rock is subjected to nitric acid attack to produce a solution in which the molar ratio NO3/CaO is approximately 2.  This solution is then ammoniated, preferably in a continuous process, to form a suspension of dicalcium phosphate and possibly calcium fluoride in a partly neutralized decomposition liquor in which the molar ratio NH3/NO3 is approximately 0,6.  At this stage in the process some water may be evaporated and the weakly acidic mixture further neutralized with ammonia and either sulphur dioxide, ammonium sulphite or ammonium bisulphite whereupon the calcium nitrate is converted into ammonium nitrate.  The product may then be granulated and dried.  Prior to granulation potassium salts may be added to produce an N.P.K. fertilizer.  Specifification 640,149 is referred to.
Patent GB-495185-A (GB)
Title: Improvements in or relating to television cathode ray tubes
IPC: H01J29/62
Filed: 1937-02-09
Abstract: 495,185. Cathode - ray tubes. RADIOAKT.-GES. D. S. LOEWE. Feb. 9, 1937, No. 3852. Convention date, Feb. 11, 1936. [Class 39 (i)] The concentrating lens-system of a cathoderay tube comprises two lenses each consisting of a truncated cone with its smaller end towards the cathode and an annular diaphragm, the electrodes having higher positive potentials as they are further from the cathode. The lens nearer the cathode 3 consists of the cone 4 and diaphragm 1, and the second lens of a cone 6 attached to a cylinder 5, and a diaphragm 7. The spot on the screen may be the image of the cathode 3 or of the aperture of the diaphragm 1. The brightness of the spot is adjusted by varying the potential of the cone 4, its size by varying the potential of the cylinder 5 and cone 6, and the focal length of the lens system by varying the potential of the diaphragm 1. Examples of voltages and dimensions are given. The deflecting electrodes 8, 9, 10 are formed of sheet metal arranged to form a closed surface so that they can be heated by eddy currents to expel gas. The distance between the two sets of deflecting electrodes and that between the deflecting electrodes and the diaphragm 7 should be at least three times the diameter of aperture of the diaphragm 7 as set forth in Specifications 430,650 and 452,650. Specification 455,084 also is referred to.
Patent GB-291713-A (GB)
Title: An improvement in or relating to paint and like cans
IPC: B65D25/20
Filed: 1928-02-08
Abstract: 291,713. Robinson, F. G. Feb. 8, 1928. Addition to 239,442. Formed with means for retaining labels.-To prevent the indicating device 2 described in the parent Specification from moving around the rim 4 of the paint or like can, a slot 7 is formed in the clip portion 3 upon which the lip 6 of the lid presses and a tongue 8 cut from the lip is caused to engage in the slot. In a modified construction the entire lip 6 may be bent to form a tongue to engage the slot.
Patent GB-654227-A (GB)
Title: Improvements in or relating to cultivating and tilling machines
IPC: B62D51/06
Filed: 1948-02-10
Abstract: 654,227. Agricultural implements. WHARTON & OLDING, Ltd., W., and WHARTON, W. Feb. 10, 1948, No. 3905. [Class 6(i)] Rotary digging tines for use with the motor cultivator described in Specification 654,229 comprise a pair of oppositely-rotating spindles 1 1a carrying spaced blades 2 3 inclined both to the axes of the spindles and to a plane normal thereto, the arrangement of the blades being such that one spindle constitutes the mirror image of the other.
Patent GB-556281-A (GB)
Title: Improvements in or relating to means for resoling and/or reheeling rubber boots or the like
IPC: B29D35/00
Filed: 1942-03-25
Abstract: 556,281. Moulding rubber soles and heels on to rubber boots. BROWN, J. C., and BROWN, A. H. March 25, 1942, No. 3930. [Class 87 (ii)] A hot base-plate 1 has cavities 3 in which are disposed sole moulds, each comprising a pattern plate 17 and side plates 18, 19, and heel moulds, each comprising a pattern plate 24, side plates 25, 26, and a distance-piece 27 which helps to hold the boot clear of the base-plate. A screw 28 presses a bar 29 against the heel mould parts to keep them in position. Separate pressing devices are provided for the sole and the heel, the devices comprising square-headed screws 14, 15 passing through holes in two parallel bars 12, located above the base-plate. Pressure on the sole is applied via block 23, plate 22, block 21 and sand 21a. Pressure on the heel is applied via blocks 23a, 30. To obtain a tight fit between the base-plate and the moulds, the former may be made of cast iron and the latter of aluminium alloy, the aluminium alloy expanding more quickly, on heating, than the cast iron.
Patent GB-209617-A (GB)
Title: Improvements in or relating to travelling rope grips and the like
IPC: B61B12/12
Filed: 1923-02-09
Abstract: 209,617. Mossman, P. M., (Hatton, F. S.). Feb. 9, 1923. Rope grips.-In a rope grip of the type in which one jaw moves relatively to another through the medium of a cam mounted directly or indirectly on one jaw and exerting a thrust on the outer face of the other jaw through a detachable wearing-piece, the wearing-piece or thrustpiece is movable relatively to the jaw with which it contacts in a direction transverse to the lire of thrust, and is shaped to make surface contact with the cam. In the illustrated construction a pivoted jaw C is adjusted relatively to a fixed jaw B by the axial movement of the squared portion E of a screw-and nut. An operating lever G' carries a cam which is pivoted on a lug E<1> of the part E and bears against the wearing strip H which has a rocking or line contact with the back of the fixed jaw, and is recessed to give surface contact with the cam. The play in the recesses H<1> allows the wearing-piece to move axially relatively to the jaw B when the cam is operated. A lug A<1> on the fixed jaw prevents downward bending of the part E.
Patent GB-1376082-A (GB)
Title: Cleaning exhaust air from workshops
IPC: B01D50/00
Filed: 1972-01-27
Abstract: 1376082 Gas cleaner SWISS ALUMINIUM Ltd 27 Jan 1972 [29 Jan 1971] 3955/72 Heading B1R A gas cleaner comprises a housing 13 having a dirty gas entry 20 at its bottom; a gas-impermeable lower enclosing wall 14 and a gaspermeable upper enclosing wall 15 including a filter package comprising filter baskets 51 containing filter packing 52 which is continually rinsed by water from a ring shaped reservoir 54 having a perforated floor 55, the water then flowing along the inner surfaces of the enclosing walls 14 and 15; a stator 25 having a ring of blades 28 so inclined as to direct gas through the stator exit openings 30 and impart a rotating motion thereto; an annular gutter 34 delivering water through slit openings 35 to the stator exit openings 30 so as to produce a water curtain across them; a fan 18 in the gas inlet upstream of the stator 25; and gutter 22 and outlet pipe 23 feeding dirty water to container 24. The stator 25 preferably comprises outer and inner rings 26 and 27 respectively, the latter carrying a guide core 31 having open water channels 33 thereon. The filter package and core 31 are sprayed with water from nozzles 58 and 39 respectively, and further water may be delivered by rings 43 and 46. In an alternative embodiment the water supply to the stator exit openings 30 is provided by pipes containing orifices 34a and 36 instead of the open gutter 34.
Patent GB-143306-A (GB)
Title: Improvements in carburettors
IPC: F02M69/04
Filed: 1919-02-18
Abstract: 143,306. Hall, H. R., and Scholes, W. Feb. 18, 1919. Spray carburettors.-Fuel is supplied to the nozzle f by a pump comprising a piston c, an inlet valve b, and a delivery valve e, the piston being operated by a diaphragm d having cne side in communication with the engine induction pipe and the other side open to the atmosphere. The air supply, which passes through the diaphragm chamber h, may be heated, and controlled by a valve i, which may be governor-actuated. A drain-pipe. j may be provided. A rapid reduction of pressure to work the pump may be produced by retaining the cylinder inlet valve closed for the first portion of the suction stroke.
Patent GB-673653-A (GB)
Title: Improvements in and relating to nets adapted for use in loading beets and other roots
IPC: B66C1/12
Filed: 1949-02-15
Abstract: 673,653. Slings. BRITISH ROPES, Ltd., and TREE, J. C. Feb. 2, 1950. [Feb. 15, 1949] No. 4104/49. Class 78 (iv). [Also in Group VIII] A rigid annular member 3 defines, in substantially the centre of a loading net, a large discharge opening which. is closed by a second member comprising load supporting elements 6 framed by a second annular member 5 hinged at 7 to the member 3 and releasably secured thereto, as by lashings 10, or a bolt, or locking arrangement, the net having suspension loops. The net may be of ropes knotted together.
Patent GB-1413931-A (GB)
Title: Separation of chlorinated aliphatic hydrocarbons
IPC: C07C67/00
Filed: 1974-01-29
Abstract: 1413931 Separation of chlorinated aliphatic hydrocarbons RHONE-PROGIL SA 29 Jan 1974 [30 Jan 1973] 04127/74 Heading C2C A mixture of C 1-3  chlorinated aliphatic hydrocarbons is separated by a liquid-liquid extraction process using an organic extractant which is at least partially water-miscible and is selected from polar aprotic solvents, polyhydric alcohols, polyglycols and glycol monoethers, including cyclic monoethers, and mixtures of such materials. Preferably C 2-7  satd. aliphatic polyhydric alcohols, C 4-8  polyglycols and C 3-8  satd. aliphatic glycol monoethers are used. Preferred polar aprotic solvents are DMSO, DMF, sulpholane, C 1  and/or C 2  alkylated sulpholanes, N-methyl-pyrrolidone, hexamethylphosphotriamide, propylene carbonate or ethylene carbonate. The extraction agent may be in admixture with up to 50% by weight of water. A mixture of 1,2-dichloroethane and trichloroethylene is preferably separated using ethylene glycol containing 5-15 % by weight of water and regenerating the extract enriched with 1,2-dichloroethane by using a solvent which extracts substantially only 1,2-dichloroethane, e.g. a paraffinic hydrocarbon. It is also possible to separate mixtures of perchloroethylene and 1,1,2-trichloroethane, CCl 4  and 1,2-dichloroethane and of 1,1,1-trichloroethane and 1,2- dichloroethane.
Patent GB-468464-A (GB)
Title: Improvements relating to hydraulic transmission gear of the turbo type
IPC: F16H41/28
Filed: 1936-02-11
Abstract: 468,464. Hydraulic transmission of power. FOTTINGER, H. Feb. 11, 1936, No. 4176. Convention date, Feb. 14, 1935. [Class 69 (ii)] [Also in Group XXVI] A turbine -type blade ring, for fluid transmission gears, comprises a number of ring-portions each consisting of a group of radial-flow blades a made integral with a sector-shaped carrier portion b, the portions being assembled to form a closed ring. The ring-portions are die-cast and are secured to one another by welding or soldering. They may be held together by a shrunk-on ring. The carrier b has a ledge f which engages the rotor. The blade tips are shrouded at h. The Specification as open to inspection under Sect. 91 comprises also a statement that the ring- portions may be cut from the solid, and that the invention may be applied to turbines generally. This subject-matter does not appear in the Specification as accepted.