baber/WOPTO huggingface dataset:
Patent GB-1012534-A (GB)
Title: Method of and apparatus for the manufacture of aerosol filters
Inventor: PERSSON CARL GUNNAR
IPC: B01D46/52
Filed: 1964-03-03
Abstract: 1,012,534. Preparation of filtering medium. FLODINS INDUSTRI A.B. March 3, 1964, No. 8893/64. Heading BIT. Aerosol filters are made by placing a flat piece of filter material on a corrugated resilient foil-like support which is in turn supported on a planar surface, bringing the filter material and foil-like support into complete engagement, gathering the corrugations into a group, and removing the finished folded filter material from the foil-like support. The foil-like support is preferably polyethylene, although thin metal foil may be used. This method of folding reduces the chances of damaging glass fibre filters along their fold lines. The method is applicable to operation on multi-ply layers, and the final shape may be circular, oval, or ring- shaped, and is also applicable to filters having straight parallel corrugations. The resilient support 1 is placed on a table 5 and the filter material 2 pressed into engagement with it. It is then hand gathered against a peg 3 to assist the support 1 in re-asserting its corrugated form, and thereby corrugating the filter material. A retaining ring may be positioned round the filter material before removing it from the support 1. A roller may be used to press the filter material and support into engagement. The process may be mechanical, and the filter material may be sandwiched between two supports 1.
Patent GB-377721-A (GB)
Title: New sulphonated products
Filed: 1931-03-23
Abstract: Aliphatic or cycloaliphatic alcohols containing ten or more carbon atoms or mixtures thereof are treated with an acetylating agent before sulphonation with chlorsulphonic acid or oleum containing more than 10 per cent sulphur trioxide.  The products are stated to be wetting agents and detergents, and may be used in the textile industry, e.g. in dyeing or in the laundry.  In examples: (1) the oil obtained by acetylation of the alcohols from wool fat is sulphonated with 20 per cent oleum and then neutralized with caustic soda: (2) octadecyl alcohol is acetylated with acetic anhydride and sulphonated with 20 per cent oleum and also with chlorsulphonic acid: (3) dodecyl alcohol is acetylated and sulphonated with 20 per cent oleum.  It is worked up by pouring the product on to a paste of soda ash, evaporating to dryness and concentrating the solution obtained by extraction with alcohol.  Ceryl, cetyl, and myricyl alcohols and cholesterol are mentioned as suitable starting materials. Specifications 307,709 and 308,824, [both in Class 2 (iii), Dyes &c.], are referred to.
Patent GB-195960-A (GB)
Title: Improvements in processes for the manufacture and production of pure sulphuric acid
IPC: C01B17/84
Filed: 1923-03-29
Abstract: 195,960. Verein fur Chemische und Metallurgische Produktion. April 10, 1922, [Convention date]. Sulphuric acid.-In the production of sulphuric acid by the lead chamber process, a pure acid is obtained by using purified gases for the reaction and by withdrawing gases from the lead chamber into a tower or apparatus of incorrodible material arranged within a lead chamber where the acid is condensed and is drawn off separately. In the apparatus shown, gases are withdrawn from a lead chamber G through a filter F to an auxiliary chamber N containing a tower T of incorrodible material with a filling of for instance glass rings. The gases are drawn into the lower part of the tower through the openings shown. Acid condensed in the tower is kept separate from that condensing in the chamber N and is drawn off at a point above the level of the acid in the chamber N by a pipe a into a glass vessel S. The gases issuing from the top of the tower T are returned to the chamber G by a fan V and the acid collecting, in the chamber N and in the fan V is returned to the chamber G by pipes b and c respectively. Such water as is required in the chamber N is admitted in the form of steam or of specially purified water. It is stated that if the manufacture cf acid of special purity is not desired, the tower T may be made of any suitable material. Specification 104,461 is referred to. The Specification as open to inspection under Sect. 91 (3) (a) states that an electrostatic separating device may be arranged in the tower T. This subject-matter does not appear in the Specification as accepted.
Patent GB-993258-A (GB)
Title: Improvements in waveguide attenuators
IPC: H01P1/22
Filed: 1962-03-08
Abstract: 993,258. Waveguide attenuators. COMPAGNIE FRANCAISE THOMSON-HOUSTON. March 8, 1962 [March 10, 1961], No. 8963/62. Heading H1W. An attenuator comprises fixed and rotatable sections of square waveguide each containing an axial resistive vane. As shown, the two outer sections 1, 3 are fixed with respect to rectangular input and output guides 6, 18 whose broad dimensions are equal to the side of the square sections in the attenuator. The central section 2 is rotatable. All three sections are filled with dielectric material and contain axially aligned resistive vanes 11 consisting of dielectric plates coated with silicon monoxide protected with a layer of nichrome. The major part of the input energy is unaffected by the section 1 since the vane 11 is at right angles to the plane of polarization. The attenuation effected by the vanes in sections 2, 3 depends upon the angle α through which the section 2 is rotated, the amplitude of the output wave being given by V = A cos<SP>2</SP> α, where A is the amplitude of the input. The input and output sections 6, 18 are matched by means of dielectric plugs 7. The intermediate sections 14 are circular and are loaded with dielectric plugs.
Patent GB-590056-A (GB)
Title: Improvements in suspensions for motor cars and like vehicles
IPC: B60G11/18
Filed: 1945-04-11
Abstract: 590,056. Vehicle axles. SOC. ANON. DES ANCIENS ETABLISSEMENTS PANHARD & LEVASSOR. April 11, 1945, No. 8982. Convention date, April 17, 1944. [Class 79 (iv)] [Also in Group XXXII] A suspension applicable to front wheel driven road vehicles having no rear axle drive is constituted by a V-shaped axle 1 connected to three points 4, 2, 4' on the body or chassis lying on an axis perpendicular to the central longitudinal plane of the vehicle, the central point 2 being directly articulated on the axle 1 and the two other points 4, 4<1> being symmetrical in relation to the longitudinal plane and connected to the axle 1 through the medium of radius rods 3, 3' the joints 5, 5<1> of which constitute bearing points of resilient members which may comprise torsion rods 6 as shown or other springs (see Group XXXII). Free movement in the joints 4, 2, 4', 5 allows limited lateral movement of the axle about the point 2.
Patent GB-665650-A (GB)
Title: Improvements in and relating to alternating-current bridge circuits
IPC: G01R17/00
Filed: 1949-04-01
Abstract: 665,650. Bridge circuits. BRITISH BROADCASTING CORPORATION, MINNS, R. H., THURNELL, D. P., and ASHDOUTN, S. J. March 30, 1950 [April 1, 1949], No. 8984/49. Class 37. In a high-frequency A.C. bridge circuit the three fixed capacitors in three of the arms comprise four conducting bodies insulated from one another, one of the capacitors comprising the first and second of the conducting bodies, the second capacitor comprising the second and third conducting bodies, and the third capacitor comprising the third and fourth conducting body. Two closely-spaced L-spaced metal plates 10, 11, Fig. 1, form a fixed capacitor 12 having a mica dielectric. A third metal plate 13 forms with the plate 11 a second fixed capacitor 14 also having mica dielectric. A fourth metal plate 15 forms with the plate 13 a third fixed capacitor 16 having air dielectric. A shaft 17 passes through an aperture 18 in, and is insulated from, the plate 13 and carries the moving vanes 19 of a variable capacitor 20 having fixed vanes 21 which are connected through an inductor 22 to the lower extremity of the plate 10. The capacitors 12, 14, 16 are included in the arms 23, 24, 25, Fig. 2, of the bridge. In the arm 23 the plates. 10, 11 form terminals to which an element 40 of unknown admittance to be measured is directly connected. A thermistor 27 is conneted in shunt with the capacitor 12 through a capacitor 28. The plates 10, 11, 13, 15 form terminals 30, 29, 31, 32. The arm 26 comprises the variable capacitor 20 shunted by a thermistor 33 and a trimmer capacitor 34. The bridge is energized from an oscillator 35 through a transformer 36 and capacitor 37. The detector 38 is connected through a transformer 39 between the terminal 31 and a tapping on the inductor 22. The thermistor 33 has its resistance changed by varying a direct or alternating current flowing through it from a source 41 through a choke 42 and variable resistor 43. The thermistor 27 is similarly varied by connection to the source 41 through a choke 45 and variable resistor 46 and compensates for changes in the thermistor 33 owing to changes in ambient temperature. The capacitor 37 prevents interaction between the two thermistors through the secondary winding of the transformer 36 and the element 40 and the capacitor 28 prevents the element 40 from providing a shunt across the thermistor 27 for the heating current. The capacitor 20 and variable resistor 43 may have calibrated scales, whereby direct readings of the conductance and susceptance components of the element 40 may be obtained. The trimmer capacitor 34 may be constituted by the capacitance between the left-hand fixed vane 21, Fig. 1, of the capacitor 20 and the plate 15, and may be varied by moving a strip of polystyrene in the gap between them. Specification 658,348 is referred to.
Patent GB-773776-A (GB)
Title: Improvements relating to the making of roads and the like
IPC: E01C19/20
Filed: 1953-04-01
Abstract: 773,776. Scattering gravel. LIMMER & TRINIDAD LAKE ASPHALT CO., Ltd., and FORBES, J. W. July 1, 1954 [April 1, 1953], No. 8987/53. Class 6(1). [Also in Group X] A machine for laying gravel, stones or other road material on a soft or sticky surface, comprises a hopper 10 carried on a  chassis supported on tracks 14 about a pivotal axis 53. A conveyer 19 carries the material forward to a screw distributer 27 having oppositely handed halves and the material is then scattered, by a longitudinally grooved roller 30, over the -road surface. The machine is arranged so that the tracks 14 run wholly or partly on the thus covered surface. Gates 21 are provided across the conveyer belt to control the density of distribution of the gravel. By shielding parts of the delivery roller its effective width, and thus the width of the gravel layer deposited, can be reduced.
Patent GB-399488-A (GB)
Title: Improvements in fuel vaporizers for internal combustion engines
IPC: F02M31/18
Filed: 1932-03-29
Abstract: 399,488. Vaporizers; treating charges. SCHWARZ, J., 6, Putrichstrasse, Munich, Germany. March 29, 1932, No. 9034. [Classes 7 (ii) and 7 (iii).] In a vaporizer, for internal-combustion engines, an externally heated chamber is provided with a fuel inlet and an outlet exposed to engine suction, and also an air inlet controlled by an automatic valve adapted to close the inlet progressively in response to increasing suction until, on or before the attainment of full load, it closes the inlet wholly so that thereafter the evaporation of the fuel proceeds in vacuo, the air necessary to provide a combustible mixture being supplied after the vaporization of the fuel in the chamber. The vaporizer comprises an outer casing 1 through which air for combustion passes around and in contact with a chamber 2 heated by the exhaust eases, and a vaporizing chamber 3 within the chamber 2. Air is drawn into the casing 1 through an adjustable spring-loaded inlet valve 8, the inward movement of which partially closes rectangular apertures 18 in a sleeve 19 secured to and communicating with the vaporizing chamber 3. The apertures 18 co-operate with apertures 21, having oblique sides, in an inner cylinder 20 which is adjustable angularly by a rod 9 and arm 22 to determine the amount of air drawn into the vaporizing chamber 3 past a fuel nozzle 15 having a serrated top, and supplied from a float chamber 14. Increased suction of air into the casing 1 draws the inlet valve 8 further over the apertures 18 restricting the air flow into the vaporizing chamber 3 and increasing the suction on the fuel nozzle 15 until at full load the apertures are closed entirely. A screen 16 in the chamber 3, with perforations which taper some one way and some the other, atomizes the fuel and grids 17 assist in preventing fire, due to back-firing, as the mixture passes to narrow passages 25 at the other end of the chamber. Ridges 26, where the passages enter the casing 1, promote mixing with the air sweeping past the passages in the casing to a throttle 7 in the induction pipe 6. For running idly, light oil is drawn along a pipe 29 to a passage 31 associated with an air inlet valve 30, a spring-pressed needle valve 32 being opened by the closure of the throttle 7 to allow the oil to pass. The valve is offset from that diameter of the throttle which is perpendicular to the spindle thereof to render the closure of the valve less abrupt. For starting, the needle valve 32 may be replaced by a handoperated valve in direct communication with the float chamber. Steam from the radiator and vapours from the crank case may be introduced into the casing 1 through a port 12.
Patent GB-724984-A (GB)
Title: Improvements in or relating to pivotal spindles for rotary liquid meters
IPC: G01F15/00
Filed: 1953-04-01
Abstract: 724,984. Rotary liquid meters. COMPAGNIE POUR LA FABRICATION DES COMPTEURS ET MATERIEL D'USINES A GAZ. April 1, 1953 [April 2, 1952], No. 9064/53. Class 110 (2). In a pivotal spindle for a rotary liquid meter of the turbine type, the part of the spindle in contact with the interior surface of the hub of the meter rotor is made of plastic material reinforced by metal. The reinforcement 1, Fig. 2, may be embedded in a peg 2 which is moulded integral with the rotor chamber 3 and made of polystyrene or polyamide. In a modification, Fig. 3 (not shown), the peg 2 is made from a different material from that of the member 3 and secured thereto during the moulding of the latter. The reinforcement may project beneath the member 3 and have its pivot point covered by the peg 2, Figs. 4 and 5 (not shown). In a final modification, Fig. 6, the reinforcement 7 is made of rustless metal and the peg 6 is moulded separately from the member 3. The spindles may be attached to the member 3 by screwing, shrinking, keying or by nuts. The reinforcement may constitute a tube.
Patent GB-580770-A (GB)
Title: Improvements relating to cam mechanisms
IPC: G03B1/22
Filed: 1944-05-12
Abstract: 580,770. Cam mechanism. BRITISH THOMSON-HOUSTON CO., Ltd., and MORFEY, D. S. May 12, 1944, No. 9137. [Class 80 (iii)] In cam mechanism of the kind in which the cam follower is provided with two parallel surfaces in simultaneous engagement with the cam at points spaced at opposite sides of the cam axis, at least one of the parellel surfaces of the follower is formed by a resilient portion of, or a resilient member attached to, the follower. As applied to mechanism for giving intermittent motion to the film in cinematograph projectors, a heart-shaped cam A, rotates within a rectangular opening of a follower B, the upper surface of which is constituted by a flat spring C seated at its ends on shoulders D raised above the inner surface of the follower between its ends, so as to be unsupported thereby. The spring has wings E at each end to grip the follower. The spring may be formed as an integral part of the follower and is given an initial deflection on insertion of the cam of an amount not less than that. caused by the operating load. Specification 23664/11, [Class 80 (iii)], is referred to.
Patent GB-807087-A (GB)
Title: Improvements in power-driven vehicles
Inventor: CLERK ROBERT CECIL
IPC: F16H57/025
Filed: 1954-03-29
Abstract: 807,087. Engine mountings GYREACTA TRANSMISSIONS Ltd. June 22, 1955 [March 29, 1954], No. 9169/54. Addition to 744,983. Class 79 (3). In a vehicle engine unit mounting having the unit casing 150 and the vehicle frame 151 interconnected by means responsive solely to' the unit output torque and applying to the casing 150 a moment balancing the torque reaction thereon, as claimed in claim 1 of the parent Specification, the means comprises a set of vanes 142 connected to the vehicle frame 151, another set of vanes 140 interleaved with the first set and connected to the casing 150, means being provided for controlling the relative pressures between alternating chambers formed by the interleaved vanes 140, 142 in accordance with the torque transmitted by the unit output shaft 7. As shown a torque senser in the form shown in Figs. 5 and 6 of the parent Specification is provided comprising vanes 65 and a casing 64 secured to the output shaft 7, and vanes 66 secured to the hub 157 of a propeller shaft 8; the senser is enclosed in the casing 150 which carries :on a sleeve 141 the three vanes 140. Secured by rubber blocks 152 to the frame 151 is a housing 145 carrying the three vanes 142, the alternating sets of chambers between the vanes 140, 142 being interconnected by pipes 153, 154. Fluid pressure in a pump output pipe 68A in the housing 150 is communicated to the chambers between the vanes 140, 142 by an annular groove 71 in the housing 150, ports 81, 82 in an extension 64A of the casing 64 ports 77, 79 in the shaft 8 leading to ducts 75, 78 therein. the ducts leading by ports 69, 70 to the alternating sets of chambers, whereby the fluid pressure reacts between the power unit casing 150 and the vehicle frame 151. The ducts 75, 78 communicate by ports 83. 88 with the alternating sets of chambers formed by the interleaved vanes 65, 66 in the torque senser. When driving torque is transmitted, the relative angular movement between the shafts 7, 8 produces corresponding angular movement between the vanes 65, 66, thereby constricting the fluid flow to, say, the ports 70 and causing pressure in the chambers between the vanes 140, 142. Where the engine unit comprises separately mounted engine and change speed gearing, the pressure delivered in the chambers between the vanes 140, 142 is varied by reducing piston valves 155, 156 within the ports 69, 70. Specification 728,122 also is referred to.
Patent GB-201883-A (GB)
Title: Improvements in safety apparatus for steam turbines
IPC: F01D21/18
Filed: 1923-04-04
Abstract: 201,883. Akt.-Ges. Brown, Boveri, et Cie. Aug. 7, 1922, [Convention date]. Regulating. - A valve a which-is opened at excessive speeds so as to destroy the vacuum in the condenser k is adapted to be opened at will so that the turbine may run non-condensing. The valve a is actuated by steam or an oil pressure relay system e - - h controlled by a speed governor b. The valve a may be opened at will bv means of a control valve i which may cut off the pressure of the oil or steam or may admit the full pressure through a bye-pass which short circuits the governor control.
Patent GB-891678-A (GB)
Title: Extrusion and heat treatment of aluminum alloys
IPC: B21C29/00
Filed: 1960-03-16
Abstract: 891,678. Heat treating aluminium alloys. REYNOLDS METALS CO. March 16, 1960 [March 17, 1959], No. 9312/60. Class 72. [Also in Group XXII] In the hot extrusion of a heat treatable aluminium alloy, the extruded product 30 issuing from the die 18 has its hardening constituents maintained in solid solution and is quenched whilst being restrained from warping. A billet of aluminium alloy containing magnesium silicide is heated to 800-1050‹F. for sufficient time to allow solution of the soluble constituents, then quenched in water to 600-1000‹F., inserted in a heated billet container 12 and extruded through a die 18. The latter is mounted with a backing piece 20 in a holder 22 supported through members 24, 26 against a press platen 34. A cooling fluid, which may be air or water, is circulated through a groove 46 in the die from a valve-controlled supply pipe 52. To support the extruded product 30, which is of circular or T section, Figs. 5, 6 (not shown), during initial cooling, there are provided carbon rings 28, 38 having orifices slightly larger than the extruded section. The rings 38 are in a canister 36 surrounded by an induction coil 70 for reheating the product prior to quenching, if necessary. Alternatively a gas fired pass-through furnace may be disposed behind the canister 36. The product is quenched by water discharged from spray rings 60 in a canister 56 mounted on a run-out table 54; any warping is prevented by further carbon guide rings 68. Alternatively for some alloys quenching may be effected by streams of air at room temperature. Spray rings may also be provided in the first canister 36. Precipitation heat treatment to a higher temper may be effected. Specific examples are given for the extrusion and heat treatment of particular alloys.
Patent GB-385622-A (GB)
Title: Improvements relating to the ejector mechanism of small-arms of the drop-down barreltype
IPC: F41A15/06
Filed: 1931-03-27
Abstract: 385,622. Drop-down guns. GREENER, C. E., St. Mary's Row, Birmingham. March 27, 1931, No. 9317. [Class 119.] Relates to ejector mechanism for drop-down hammerless guns of the kind in which the ejector tumblers are moved over dead-centre with relation to their springs by an intermediate lever which is moved into the operative position by the lock-cocking dog when the gun is fired. According to the invention, the intermediate lever f is pivoted at f<1> in the fore-end d, in such relation to the ejector tumbler e and cocking dog b that the latter, after firing, is protruded into the path of the toe f<2> of the lever f and remains in engagement therewith during the opening of the gun. In the form shown, the cocking dog g also constitutes the mainspring, as described in Specification 12012/10, [Class 119, Small-arms], and is provided with a shoulder b<4> which is adapted to engage with the toe f<2> on the lever f that extends through a slot b<3> in the fore-end knuckle b<2>. The upper face of the lever engages with the ejector tumbler e, which pivots about a pin e<2> disposed above and behind the pin f<1>. When the gun is broken after firing, the lever f is caused to rotate by its engagement with the shoulder b<4>. The lever f, in this movement, levers the ejector tumbler upwards past the dead-centre in relation to the ejector spring e<1> to effect the ejecting operation. In a modification, the shoulder b<4> is replaced by an additional limb which is slidably mounted in the tail b<1> of the cocking dog b. Specifications 8239/93 and 11975/94, [both in Class 119, Small-arms], are also referred to. According to the Provisional Specification the invention is applicable also to guns with pivoted lockcocking dogs.