baber/WOPTO huggingface dataset:
Patent GB-877917-A (GB)
Title: Method and apparatus for pulverizing and/or decomposing solid or molten materials
IPC: B01J19/10
Filed: 1959-01-15
Abstract: 877,917. Pulverizing apparatus. KOHISWA JERNVERKS A. B. Jan. 15, 1959 [Jan. 17, 1958], No. 1538/59. Class 59 A method of pulverizing or disintegrating solid materials or molten materials which are solid at normal temperatures is characterized in that the material is subjected to shock waves travelling at supersonic speed with a movable wave front and with ultrasonic frequency above 20,000 vibrations per second, the shock waves being directed to converge, or be concentrated, on a point or small spot or zone on the material. The frequency of the shock waves is preferably between 40,000 and 100,000 vibrations per second. The shock waves are preferably generated in an inert or reducing gas or in a preheated gas such as air. A device for -carrying out the method comprises an electrically-heated crucible 1, Fig. 1, for melting a metal 3 e.g. zinc or lead, the crucible having a hole in the bottom thereof through which flows a jet 5 of molten metal which falls into the central channel 6 of a shock wave generator 7. The pulverized material is collected in a container 7a. The shock wave generator, Fig. 2, comprises an annular row of cavities 13 on each -side of which are resonance chambers formed by cavities 14, 16 and 15, 17. A gap 18 extends to the central chamber 6. Coaxially with each cavity 13 is a jet hole 19 which connects with a presure chamber 20 to which gas at supersonic speed is suppled through a pipe 21. Shock waves formed in the gap 18 are partially deviated by the walls of the cavities 14, 16 and are directed towards the centre line of the channel 6 in the form of a cone the apex of which is directed downwardly and pendulates axially along the centre line of the channel 6. In a modification, Fig. 3, compressed gas is supplied through one or more pipes 24 to the chamber 23 of an annular element 22 and flows out through holes 25 towards a rotating body 26 having holes 27. A rod 28 of metal or other solid material is fed into a central channel 29 in the body 26. Shock waves are produced which are concentrated on the rod 28 to pulverize it. In another modification, compressed air may be blown through an annualr slit against an edge of a toroidshaped resonator chamber opposite to which is another toroid-shaped resonator chamber. These chambers also act as reflectors and in the gap between them are produced shock waves which are concentrated on a small spot of the solid material. The shock waves may be generated electrically or magnetically.
Patent GB-112335-A (GB)
Title: Improvements relating to Internal Combustion Engines.
Inventor: MILLAR JOHN
IPC: F02M1/00
Filed: 1917-07-28
Abstract: 112,335. Millar, J. July 28, 1917. Vaporizers, external.-The induction pipe c is enclosed in a box b through which the whole of the exhaust gases pass from the pipes b<1>, b<2> to the outlet b<3>.
Patent GB-101819-A (GB)
Title: Process for Accelerating the Vulcanisation of Natural or Artificial Caoutchouc or Caoutchouc like Substances.
Inventor: PEACHEY STANLEY JOHN
IPC: C08K5/00
Filed: 1916-02-03
Abstract: 101,819. Peachey, S. J. Feb. 3, 1916. Vulcanizing materials.-Nitrosophenols or their homologues, such as nitrosocresols or nitrosoxylenols, are used for facilitating vulcanization. of natural or artificial caoutchouc or caoutchouc-like substances. In an example, 10 parts of sulphur and 1 part of nitrosophenol are used for vulcanizing 100 parts of rubber at a temperature of 135- 145‹ C.
Patent GB-232672-A (GB)
Title: Improvements in apparatus for receiving wireless signals
IPC: H01J21/20
Filed: 1924-01-22
Abstract: 232,672. Shannon, D. S. B. Jan. 22, 1924. Thermionic amplifiers and detectors.-Relates to receiving circuits designed to secure full-wave rectification of the incoming signals. The input energy is fed to the common grid circuit of two separate valves, or to a single two-grid valve, the two rectifying grids being connected to the positive and negative terminals respectively of the common filament battery. As shown in Fig. 1, the grids of the valves 1, 2 are connected through leak resistances 12, 13 to the positive and negative terminals respectively of the common filament battery 11, so that the valve 1 operates at the upper bend of its characteristic curve whilst the valve 2 works at its lower rectifying bend. The mid-point of the battery 11 is earthed either directly or through a potentiometer. The signal voltages are applied from the inductance 5 to the middle plate 6 of a double condenser, the positive pulses being rectified by the valve 2 and the negative pulses by the valve 1. A double-grid valve may be used in place of the two valves 1, 2, as shown in Fig. 8 the grids 3, 4 being arranged either vertically or horizontally and co-operating with either one plate or two. In the double-grid valve shown in Fig. 9 the grid condenser 7, Fig. 8, is mounted on the valve, the metal cap 27 forming one plate, and a layer of tinfoil 28 the second plate, the two being separated by mica dielectric 29; or the grid 7 and leak 12 may be mounted inside the valve. Fig. 10 shows an alternative circuit in which the filament is tapped to the mid-point of the inductance 5, the opposite ends of which are connected to the grids of the valves 1, 2. The application of a stage of high-frequency amplification to this circuit is also described. The Provisional Specification also refers to an arrangement of two valves reciprocally back-coupled through high resistances.
Patent GB-398826-A (GB)
Title: Improvements in thermionic valve amplifiers
IPC: H03F3/36
Filed: 1932-01-20
Abstract: 398,826. Valve amplifying circuits. DUBILIER CONDENSER CO. (1925), Ltd., Victoria Road, North Acton, London.- (Assignees of Rath, K. ; 2427, Webster Avenue, The Bronx, New York, U.S.A.) Jan. 20, 1932, No. 1749. Convention date, Jan. 21, 1931. [Class 40 (v).] In a direct-coupled amplifier, the control electrode of one valve is connected to a point on a potentiometer inserted in the anode circuit of the preceding stage. Fig. 2 shows a threestage amplifier having potentiometers 18, 19, 20 in the anode circuits of valves 1, 2, 3, the grids of 2, 3 being respectively connected to tappings on 18, 19. By this arrangement the valves may be fed in parallel from the hightension source as distinct from the known direct - coupled arrangements in which the total required voltage is the sum of that of the individual stages ; further, as fluctuations in output current do not affect the operating characteristics of the preceding stages as in the known series-fed arrangement, the amplifier is stable. Hum from the supply source is eliminated by the present arrangement as the grid and cathode potentials vary simultaneously at the hum frequency and the potential difference between them remains constant. A complete circuit for a.c. mains operation is given in Fig. 3 (not shown). Fig. 4 shows a combination of the parallel-feed system of the invention with the known series connection, the valves 2, 3 being coupled as in Fig. 2 while the valve 1 is connected across the portion a, c of the high-tension supply potentiometer. Fig. 5 shows a combination similar to Fig. 4, in which two potentiometers 15, 35 are in parallel across the supply to form a Wheatstone bridge of ohmic resistances the diagonals of which are constituted by the high-tension supply and the grid-cathode paths of valve 2, so that unbalancing of the bridge by signal variations at 16 produces corresponding variations in the grid potential of valve 2. Grid biasing for valve 2 is obtained from the voltage drop across the difference x, y between the tappings i, j. Reference has been directed by the Comptroller to Specification 344,936.
Patent GB-753544-A (GB)
Title: Improvements in or relating to rotor blades for rotary wing aircraft
Inventor: WATSON KENNETH
IPC: B64C27/473
Filed: 1954-01-21
Abstract: 753,544. Aircraft rotor blades. SAUNDERS-ROE, Ltd. Dec. 24, 1954 [Jan. 21, 1954], No. 1838/54. Class 4. A rotary wing aircraft rotor blade comprises a hollow longitudinal spar occupying the full depth of the blade of a substantially constant cross-section throughout, formed of spaced front and rear spar members 11, 12 and metal sheets 13, 14 conforming to the curvature of the upper and lower surfaces of the blade and bonded to the spar members by metal-tometal adhesive. The blade is completed by a trailing portion 23 of a honeycomb structure made of metal, glass fabric, stiff paper impregnated with synthetic resin, or a moulded expanded synthetic resin, bonded to the spar member 12, a nose section 15 of rubber or the like, into which may be moulded ignition leads 16, fuel supply and return pipes 17, 18 and an air supply pipe 19 for a tip jet engine, and a skin 24 of skin gauze light alloy bonded overall to the underlying assembly. A narrow trailing member 25 of wood, metal, or synthetic plastic may be bonded to the trailing structure 23. Driving fluid may be supplied through a pipe in the nose section and distributed through holes therein. An end coverplate 26 is fitted near attachment points 41, 42 for a pulse jet or ram jet at the root and there are attachment points 31, 32 and reinforcing plates 27. Tie plates 29 may be fitted between the spar members 11, 12 near their outer ends. Fittings 20, 21 serve to connect the leads 16-19 to the feeds and the engine. Specification 753,545 is referred to.
Patent GB-601439-A (GB)
Title: Improvements in or relating to electrolytic cells
IPC: C25B9/14
Filed: 1946-01-21
Abstract: 601,439. Electrolysis. MATTHEWS, E. F. (Krebs & Co., Aktieselskapet.). Jan. 21, 1946, Xo. 1994. [Class 41] An electrolytic cell comprises a vessel 1 with a flat bottom on which there is a layer 3 of quicksilver constituting one of the electrodes, the bottom being provided along the edges with - shallow grooves or depressions 4 which prevent uncovering of the bottom surface due to contraction of the quicksilver. In a modification, the base of the vessel is divided into sections, each having a layer of quicksilver with the edges thereof in shallow depressions in the base.
Patent GB-1197842-A (GB)
Title: Improvements in Polyamide Emulsions.
Inventor: JUDD PETER THOMAS
IPC: C08J3/07
Filed: 1968-01-12
Abstract: 1,197,842. Polyamide emulsions. W. R. GRACE & CO. 10 Jan., 1969 [12 Jan., 1968], No. 1995/68. Heading C3R. The invention comprises aqueous emulsions and solid suspensions of complexes of polyamides and alkalis, the polyamides being of high molecular weights corresponding to amine values below 10. They are obtained by adding water to a solution of the polyamide in an organic solvent, e.g. iso propanol or n - propanol, removing at least a part of the solvent, e.g. by distillation, and emulsifying the mixture in the presence of the alkali or adding alkali after the formation of the emulsion. The alkali may be an alkali metal hydroxide, ammonia or an amine. In examples a polyamide obtained from polymeric fatty acids is emulsified using n-propanol as the solvent and ammonia, potassium hydroxide and di-isopropylamine as alkalis; the emulsions also contain a polyoxymethylene and a sodium polyacrylate.
Patent GB-469397-A (GB)
Title: Improvements in or relating to the making of heels
IPC: B27M3/20
Filed: 1936-01-23
Abstract: 469,397. Making wooden heels for shoes &c. UNITED SHOE MACHINERY CORPORATION. Jan. 23, 1936, No. 2112. Convention date, Jan. 24, 1935. [Class 145 (i)] [Also in Group VII] A method of making a heel includes operating upon a heel blank with a rotating cutter which, as it rotates, generates a solid of revolution whose surface comprises a series of flutes circular in planes perpendicular to the axis of the cutter, causing relative movement to take place between the axis of the cutter and the heel blank in such a way that the locality of operation of the cutter on the blank progresses round the blank and during at least a part of said relative movement causing relative displacement between the blank and the cutter axially of the cutter. By following out this method an ornamental heel as shown in Fig. 8, is produced. The machine for carrying out the method is, in the preferred embodiment, substantially the same, both in construction and mode of operation, as that described in Specification 225,291, [Class 145 (i)], except for the nature of the cutters which, in the present instance, are provided with blades having a cutting edge comprising a number of teeth joined by concave arcs as shown in Fig. 4. The heel blank is presented to one cutter and the part-rotation of the blank about the jack-shaft causes the cutter to shape the blank from one breast edge to the back; during the part-rotation the jack-shaft is moved vertically by the " lower track"; the central portion of the " lower track " is however horizontal, so that while the back is being worked, no vertical displacement ensues, and the heel is shaped with beads complementary to the cutter edges; during the cutting from the breast edge to the back, however, vertical displacement ensues, with the result that the side of the heel is shaped with flutes decreasing in depth towards the breast edge ; the gate is then swung over and the heel blank presented to the other cutter, whereupon the remainder of the heel blank is shaped in the same manner. Owing to the tilting action of the " upper track " the flutes also diverge as they approach the breast edge; the central portion of the " upper track " is made horizontal. According to the Specification as open to inspection under Sect. 91 the lower track may be horizontal in which case the heel is beaded all the way around; alternatively the upper track may be horizontal in which case the flutes are parallel. The cutter blades need not be toothed throughout the whole of their cutting edges, and the ornamentation may be effected over only a part of the side and back surface of the heel. This subject-matter does not appear in the Specification as accepted.
Patent GB-547222-A (GB)
Title: Improvements in spinning machines
IPC: D01H7/62
Filed: 1941-02-17
Abstract: 547,222. Ring spinning machines. BRITISH CELANESE, Ltd. Feb. 17, 1941, No. 2114. Convention date, Feb. 16, 1940. [Class 120 (ii)] A device for lubricating a spinning ring comprises a plunger pump 15 secured to the ring 10 and a reservoir 11 secured below the ring to supply the pump with lubricant and to collect excess lubricant supplied to the ring. The pump 15 is operated by the rise and fall of the ring rail, a stationary arm on the machine frame engaging the head 27 of the plunger in the upward stroke of the rail and a spring 26 serving to return the plunger during the downward stroke of the rail. The stroke of the plunger is determined by a screw 28. A sloping plate 12 catches the excess oil coming from the ring and directs it into the reservoir. An air cylinder 21 absorbs the shock of the downward stroke of the piston and controls the flow of lubricant into the oil groove 24 arranged above the bearing surface 14. The manifold 21 and holes 23 are filled with wicking or other porous material to prevent oil from spurting from the grooves 24.
Patent GB-544569-A (GB)
Title: Improvements in or relating to systems for the electrical transmission of sounds
IPC: H04B1/62
Filed: 1941-02-17
Abstract: 544,569. Stereophonic transmission, volumerange compression and expansion. ELECTRICAL RESEARCH PRODUCTS, Inc. Feb. 17, 1941, No. 2134. Convention date, April 5, 1940.. [Class 40 (iv)] In a sound-transmitting or recording and reproducing system in which two microphones associated with separate transmission channels pick up different versions of the same sound, the volume-range in each channel is compressed at the transmitting end, the expansion at the receiving end being under the control of a pilot current in the form of a modulated carrier wave or of a trace of such a wave. As shown, currents from an oscillator 11 are modulated by a wave derived by rectifying speech currents from a microphone 1 at 31 and are in part rectified at 43 for the control of a compression device 49 and in part recorded at 15 for the control of a corresponding expansion device at the receiving end. Similar control currents are derived from a second microphone 2, a part of the output of which is rectified and modulates the output of a second oscillator 12. The pilot currents are recorded together and selected at the receiving end by filters. A common oscillator generating. a number of harmonics, preferably odd harmonics only, may be used instead of the oscillators 11, 12. Specifications 23620/11, [Class 40 (ii)], and 426,488, [Group XXXVIII], are referred to.
Patent GB-179981-A (GB)
Title: Improvements in signalling apparatus for use in connection with motor vehicles
IPC: B60Q1/34
Filed: 1921-01-15
Abstract: 179,981. Hodgson, J. Jan. 15, 1921. Illuminated stencil and transparency indicators. -In a direction-indicator for motor vehicles two casings A, B, each containing four compartments arranged in line, display signals in the forward and rearward directions respectively. White discs a, b and red discs a<1>, b<1> are situated between the hands a<2>, a<3>, b<2>, b<3>. The lamps for illuminating the hands and discs are mounted in the compartments, and are connected with the accumulator C through switches D. A lamp E, attached to the back of the vehicle, is used, in conjunction with the red disc, to signal the driver's intention to reverse. The back of each compartment may be perforated to show a miniature representation of the corresponding signal to indicate to the driver that the correct signal has been illuminated.
Patent GB-434170-A (GB)
Title: Improvements in or relating to thermionic valves and circuit arrangements incorporating the same
IPC: H03D7/10
Filed: 1934-02-26
Abstract: 434,170. Valve circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Electra House, Victoria Embankment, London.- (Smith, J. C.; 4618, Lafayette Avenue, Merchantville, New Jersey, U.S.A.) Feb. 26, 1934, No. 2143/35. Divided out of 427,360. [Class 40 (v)] The invention relates to a valve circuit arrangement employing a valve of the type described in the Specification 427,360, in which energy can be fed back from the auxiliary anode of the valve to the input or control grid circuit. Fig. 2 shows the arrangement of the electrodes of a valve in accordance with Specification 427,360, the screen 30 acting as a normal screen grid for the main anode 27, and also screening the latter from the auxiliary anode 28. Anode 28 is back-coupled to the signal input circuit and its circuit includes a resistance 38 of such value that the mutual conductance between control grid 26 and anode 28 is constant with large variations in the conductance of 26 and anode 27. By varying the voltage of the screen 30 the valve gain can be controlled without varying the regeneration. Fig. 3 shows the use of a modified valve as a detector-oscillator. Here an additional control grid 46 is provided in the electron stream of the main anode 42, the screen electrode 48 being somewhat modified accordingly. Oscillations are generated by back coupling the auxiliary anode 44 and inner grid 43 and these are mixed with the incoming oscillations applied to the grid 46 from circuit 54. The current limiting resis. tance 63 corresponds to 38 of Fig. 2. Specification 408,256 also is referred to.
Patent GB-984029-A (GB)
Title: Estrone derivatives and methods for their production
Inventor: EVANS DAVID DARWIN
IPC: C07J41/00
Filed: 1963-01-17
Abstract: The invention comprises compounds of formula <FORM:0984029/C2/1> where Z is a dimethylamino, benzylmethylamino, benzylamino, dibenzylamino, methylphenylamino, piperidino or morpholino group and n is an integer from 2 to 10 inclusive, acid addition salts thereof, and their preparation by (a) reacting estrone with an aminoalkyl halide of formula Z-(CH2)n-X, where X is a halogen atom, in the presence of a base, or (b) reacting compounds of formula <FORM:0984029/C2/2> prepared as disclosed in Specification 984,030) with an amine Z-H.  3 - (o  - Iodo - n - butoxy) - estra - 1,3,5(10)-trien-17-one is prepared by reacting the corresponding chloro-compound with sodium iodide.  The compounds of the invention are converted on reduction to the corresponding 17-hydroxy-derivatives, as described in Specification 983,028.  The compounds of the invention are anti-fertility agents and may be used alone or in combination with one or more pharmaceutical diluents or excipients in forms suitable for oral administration, e.g. as tablets, pills, sachets or packaged or encapsulated powders.
Patent GB-785832-A (GB)
Title: Profile grinding machine
IPC: B24B17/02
Filed: 1955-01-26
Abstract: 785,832. Copy grinding. DIAMETAL AKT.- GES. Jan. 26, 1955 [Feb. 5, 1954], No. 2275/55. Drawings to Specification. Class 60. A copy-grinding machine comprises two pantographs connected in series. The machine is identical with that described in Specification 785,831.
Patent GB-636993-A (GB)
Title: Improvements in or relating to sound recording and reproducing apparatus
IPC: G11B25/10
Filed: 1948-01-26
Abstract: 636,993. Radiogramophones. HARTLEY ELECTROMOTIVES, Ltd., and HARTLEY, A. W. M. Jan. 26, 1948, No. 2342. Drawings to Specification. [Class 40 (v)] [Also in Group XXXVIII] Relates to apparatus which combines a gramophone and sound recording and reproducing apparatus, using a magnetic or other strip record, preferably using a common audio amplifier and loud - speaker (see Group XXXVIII). The apparatus may also comprise a radio receiving set.
Patent GB-715191-A (GB)
Title: Improvements in or relating to a process for separating acetone and methanol from complex mixtrues by extractive distillation
IPC: C07C45/83
Filed: 1950-01-30
Abstract: <PICT:0715191/III/1> Methanol is separated from mixtures containing acetone and other organic compounds containing oxygen, by subjecting the mixture to extractive distillation using water as solvent in such an amount that the concentration of water in the liquid at any point of the fractionating column is at least 50 mol. per cent., maintaining the temperature at the head of the column at 60 DEG -80 DEG C. and the temperature at the base of the column at 85 DEG -105 DEG C., removing a distillate containing acetone and other organic compounds from the head of the column, and withdrawing an aqueous solution of methanol from the base of the column.  A mixture containing acetone (80 per cent.), methanol (2 per cent.), aldehydes of average molecular weight 56.5 (14 per cent.), esters (3 per cent., as methyl acetate), and water was introduced through line 2 at the 45th plate of a 60 plate fractionating column 4; and water (1.9 volumes per unit volume of feed) was added to the top of the column through line 6.  The temperatures of the top and bottom of the column were maintained at 76 DEG  and 101 DEG C. respectively.  An aqueous solution containing 1.2 weight per cent. of methanol was withdrawn from the base of column 4 through line 8, and introduced into column 10.  Pure methanol was obtained from the head of column 10.  The water obtained as bottoms in column 10 was partially recycled to the top of column 4.  The overhead stream from column 4, which contained less than 0.05 per cent. methanol, was introduced through line 22 on to the 45th plate of p  plate of a 60 plate fractionating column 24. Water, 15 volumes per unit volume of feed, was introduced into the top of column 24 through line 26; and the temperatures at the top and bottom of this column were maintained at 53 DEG  and 96 DEG C. respectively.  An aqueous solution containing 3.2 weight per cent. of acetone was withdrawn from the base of column 24 through line 32, and introduced into column 34.  Substantially pure acetone was taken-off from the head of column 34.  Water was withdrawn from the base of column 34, and partially recycled to the top of column 24.  The overhead stream from column 24 comprised water and substantially all the impurities, viz. acetaldehyde, propionaldehyde, butyraldehyde, and methyl acetate.  In a modification, the initial extractive distillation is carried out to obtain a purified aqueous solution of methanol and acetone as bottoms; and this solution is then subjected to further extractive distillation to separate methanol and acetone. Specification 660,773 is referred to.