baber/WOPTO huggingface dataset:
Patent GB-341150-A (GB)
Title: Improved construction of slot-sieves
IPC: B07B1/46
Filed: 1929-10-28
Abstract: 341,150. Sieves. HERMANN, R., 33, Zwickauer Strasse, Dresden, Germany. Oct. 28, 1929, No. 32688. Convention date, Oct. 27, 1928. [Class 117.] In the construction of sieves of the kind comprising longitudinal bars a, Fig. 2, and crossbars c, the spacing between the bars a is determined by pressing out the metal thereof laterally either before or during the attachment of the bars c, by causing the metal of the bars c to flow between the bars a or by providing the bars of one set with teeth adapted to bite into the other bars. As shown in Figs. 1, 3 and 4, the longitudinal.bars a are held at the required spacing during the process by a comb b and the cross-bars c are forced into them by a die e causing the metal to swell sidewise as shown at d to act as the permanent spacing means. The sides of the grooves in the bars a are then upset as shown in Fig. 3 to retain the crossbars in place. Alternatively the grooves may be formed by a preliminary pressing operation. In a modification, Fig. 7, the cross-bars c are formed of softer metal and caused, in the pressing operation, to flow between the bars a at g. According to a further modification, Fig. 9, the bars of one set are formed with teeth h &c. adapted to bite into the other bars.
Patent GB-169136-A (GB)
Title: Improvements in the manufacture and production of films of silica, alumina, or otherrefractory substances and apparatus for use therein
IPC: C03B15/04
Filed: 1920-11-19
Abstract: 169,136. Ro´boul, M. de. Sept. 16, 1920, [Convention datel. Drawing.-Relates to drawing films of silica, alumina or like refractory substance having a thickness of the order of 0.001 mm. and a width of about 6 cm. Such films are stated to be strong and flexible The apparatus employed is generally similar to that described in Specification 165,052 for the drawing of flaments. Pairs of parallel wires b<1>, b<2> of iridium &c. are passed over pulleys c<3> and wound on a drum n and draw up a film f from a bath a of molten material. The drawing may be started by a cross wire l<1>. The wires may be cut away from the film when it is subsequently unwound from the drum or they may be severed from it as it is wound on to the drum.
Patent GB-423535-A (GB)
Title: Improvements relating to control systems for electric discharge apparatus
IPC: H02M1/04
Filed: 1933-11-24
Abstract: 423,535. Phase changing ; converting. SIEMENS - SCHUCKERTWERKE AKT.- GES., Siemensstadt, Berlin. Nov. 24, 1933, Nos. 32892 and 32893. Convention dates, Nov. 24, 1932 and Dec. 8, 1932. [Class 38 (ii)] In a control system for determining the moment of ignition with reference to the anode potential of a gas or vapour filled electric discharge vessel, a coil connected in the grid circuit of the discharge vessel is coupled with a magnetic circuit which is so saturated that variations of the magnetic flux are only produced when the excitation of the magnetic circuit on a change of direction becomes zero or approximately zero, the magnetic circuit being provided with an alternating current excitation of constant phase displacement with respect to the anode potential of the vessel, and with supplementary direct or alternating current excitation. In one form the magnetic circuit 1, Fig. 3, has a winding 2 connected to the alternating current mains, and a winding 3 connected to an adjustable direct current circuit. A third winding 4 on the same core as the windings 2, 3 is connected to the control grid of the discharge vessel 6, a biassing potential being introduced from a source 5 of direct or alternating current in the connection to the winding 4. The current in the winding 2 is given a definite constant phase displacement relatively to the potential of the anode e<a> by connecting an inductance 7 in series with the winding. When a +ve or -ve current from the battery 8 is added to the alternating current excitation of the magnetic circuit the potential impulses produced in the grid circuit are displaced in their time position so that the time of ignition of the discharge vessel can be adjusted by adjusting the potentiometer resistance 8. The arrangement may be modified by taking the grid potential from the winding 2 or 3. The method can be used for automatic currentregulation, e.g. of an electric motor, by connecting the exciting winding 3 of the magnetic circuit either across or in series with a resistance in the armature circuit of a direct current motor. Fig. 4 shows a full-wave rectification system wherein two discharge vessels 10, 11 supplying a load 12 have their grid circuits linked to separate magnetic circuits 13, 14 which are each provided with direct and alternating current excitations, the alternating current excitations being connected in the same sense, while the direct current excitations are in the opposite sense. Either or both exciting currents can be varied, for example, when supplying a direct current motor its speed may be optionally regulated by altering the strength of the alternating current, or automatic regulation may be effected by making the polarizing direct current dependent upon the load. In a further modification a magnetic circuit is provided with two alternating current excitations which are displaced in phase with respect to each other, while a third winding is connected to the grid circuit of the discharge vessel to be controlled.
Patent GB-1045670-A (GB)
Title: Improvements in or relating to containers of the easy opening kind
IPC: B65D/
Filed: 1965-08-02
Abstract: 1,045,670. Stamping. CONTINENTAL CAN CO. Inc. Aug. 2, 1965 [Nov. 25, 1964], No. 32979/65. Heading B3Q. [Also in Division B8] Score lines 15, 16, Fig. 4 (not shown), which may be continuous to form a removable portion in a can end, are reduced in cross-sectional area over a limited part by punching-out a recess 24 between the score lines, thereby causing the metal of the can end to flow outwards from the recess 24 and into the space at 25 resulting from the formation of the score lines. Ribs 27, 28 are formed adjacent and outside the score lines, Fig. 2 (not shown). The reduced areas of the score lines increase resistance of the removable portion to being torn out by means of a pull tab (see Division B8) riveted thereto.
Patent GB-1492999-A (GB)
Title: Building construction and wall panel for such constructio
IPC: E04B2/72
Filed: 1975-08-07
Abstract: 1492999 Building panels, shower cubicles TWELLOSE INDUSTRIE PLASTICS BV 7 Aug 1975 [12 Aug 1974] 33017/75 Headings E1A and E1B A building element 10 comprising an interlocking tongue along at least one edge and a groove along at least one; has at one face of the element a layer of synthetic waterproof plastics material 11, preferably glass fibre reinforced polyester, the thickness of which is substantially less than the overall thickness of the element, an edge portion of said layer of synthetic material forming at least one surface of a groove or tongue. The panel further comprises a filling and a layer 13 of material such as chipboard. Wooden reinforcing members 125 may be provided at one or both edges. Corner elements 121 and 134 are provided and together with floor 1 and roof 14 panels are used to form a complete shower cubicle. Alternatively they may be used to line the walls of an existing room. The panels may be made up of a plurality of interlocking elements enclosed by a multipart frame.
Patent GB-795395-A (GB)
Title: Improvements in and relating to position indicating devices
Inventor: DOLAN HARRY
IPC: B66B3/02
Filed: 1955-11-18
Abstract: 795,395. Indicating-apparatus. ENGLISH ELECTRIC CO., Ltd. Nov. 15, 1956 [Nov. 18, 1955], No. 33086/55. Class 106 (4). [Also in Groups XXIV and XXX] A depth indicator for a mine winder installation comprises a coarse and a fine indicator 20, 19 moving concentrically and a connecting gear train in a box 11 detachable from the indicator casing 14. A bevel gear 41, secured to a shaft 38 driven from the mine winder drum at the same speed as the drum, protrudes into the casing 14 to mesh with a bevel gear 35 secured through a member 29 to an annulus 28 carrying the fine indicator 19 also of annular form. A bushing 49 pinned to a shaft 46 carries the coarse pointer 20 and a masking plate 52 and is driven from the shaft 38 through reduction gearing so as to complete about seven-eights of a revolution as the mine cages move from one end of the shaft to the other. The scale plates 17, 18, fine indicator 19 and annulus 28 are formed of translucent material and the scales 17, 18 and indicator 19 carry movable marks preset so that by observing the pointer 20 in mid-shaft and the indicator 19 near a landing position the winding engine man can land the cage in correct position. To ensure a correct indication, back lash in the gears is avoided by forming the bevel gear 41 and one gear in each stage of the reduction gearing in two coaxial parts interconnected by a spring (see Group XXIV). The gear-box can be readily removed for servicing and the front of the indicator casing 14 is closed by a glazed door 15 with sealing arrangements to exclude dust.
Patent GB-651406-A (GB)
Title: Improvements in or relating to centrifugal pumps
IPC: F04D29/22
Filed: 1947-12-16
Abstract: 651,406. Centrifugal pumps. EGGER, E. Dec. 16, 1947, No. 33135. Convention date, Dec. 20, 1946. [Class 110(i)] In a rotor for a centrifugal pump adapted for pumping liquids containing air, gases or vapours, the blade overlap angle a is negative and all the blades 1 are equal in shape, length and position with respect to the rotor axis with their inlet edges 3 entering the axial inlet space 2, and the blade passages widen out towards the outlet. The flow detaches itself from the back of each blade so that a vacuum zone R is formed. The resulting ejector action removes any entrained air and renders the pump selfpriming. Substances which can be pumped include freely frothing liquids and liquid which contains wood pulp, potato pulp, spinach, and tomato puree. The rotor may form the first stage of a multi-stage pump, the remaining rotors being of known construction.
Patent GB-384430-A (GB)
Title: Improvements in roller bearings
IPC: F16C23/08
Filed: 1931-11-30
Abstract: 384,430. Boiler bearings. WING. QUIST, S. G., Remningstorp, Skara, Sweden. Nov. 30, 1931, No. 33197. Convention date, Dec. 2, 1930. [Class 12 (i).] In a roller bearing having rollers 4 with a convex rolling surface each roller contacts one of the races at a single point K and the other race at two points K1, K2, the contact points being arranged so that the pressures acting on the roller are balanced in all directions. This is effected by arranging the normals to the races at the points K, K1, K2, to pass through a common point as shown. In the illustrated construction for a double-row roller bearing, the profiles of the races are circular arcs and the straight line passing through the points K1, K2, and the axis of the roller, intersect the bearing axis at a common point. In a modification for a single row bearing, the inner race at the points K1, K2, is conical.
Patent GB-384433-A (GB)
Title: Improvements relating to control mechanisms for electrically propelled road and rail
IPC: B60L15/02
Filed: 1931-12-01
Abstract: 384,433. Actuating controllers. SMITHSON, J. G., Oakdale, Alvechurch, Worcestershire. Dec. 1, 1931, No. 33270. [Class 38 (iii).] Checked by motor current.- A pedal or handlever for actuating the starting and rheostatic braking controller of a vehicle motor n, is combined with an air-operated reaction device such as a cylinder d and piston c, the supply of air to which is controlled by an electromagnetically operated valve mechanism responsive to the motor current. When the rheostat arm b is moved by a pedal a, the increase of motor current in a solenoid l moves a core k against a spring m, and by means of a lever j, opens a spring-biased valve e, and allows a spring-biased valve f to close, so that air under pressure is allowed to pass from a supply q to the cylinder d, and oppose the movement of the pedal a. Air also passes under pressure to a cylinder p, and lifts the core k to allow the valve e to reclose without opening the valve f. As the motor current falls the core k is lifted still further by the spring m and the pressure in the cylinder p, so that the valve f is opened and the air exhausted at r. The pressure on the pedal a is thereby relieved, and further unchecked movement is possible. The checking operation is repeated when the motor current rises again. The pistons and cylinders may be replaced by diaphragms.
Patent GB-630321-A (GB)
Title: Improvements in or relating to superheterodyne receivers
IPC: H03J7/00
Filed: 1946-11-08
Abstract: 630,321. Valve circuits for radio reception. PHILIPS LAMPS, Ltd. Nov. 8, 1946, No. 33291. Convention date,. May 3, 1943. [Class 40 (v)] The output of the I.F. amplifier valve 1 of a superheterodyne receiver is coupled to an inductor 3 in the input circuit of an amplifier valve 4. This input circuit or a second input circuit of the amplifier also includes a highlyselective tuned circuit 5 tuned to the carrier frequency and arranged such that the I.F. signal applied to valve 4 is not affected thereby. The tuned circuit is regeneratively coupled to the output of the amplifier to increase the selectivility of the circuit and the output from the amplifier which is applied to demodulator 11 consists of a carrier exalted signal, the level of the sidebands relative to each other being unchanged. Circuit 5 is automatically maintained in tune with the carrier by means of a coil 8, having a magnetic core whose permeability is controlled by the anode current of valve 17 flowing through coil 18. This current is controlled by a control voltage obtained from an error detector comprising diodes 13, 14, to which the I.F. signal is fed in push-pull via coil 12 coupled to coil 2 and the selected carrier is fed in parallel from coil 16 coupled to the anode circuit of the amplifier. Asymmetry of the frequency response of the filter due to the capacity to earth from coil 3 and to the capacity between the final I.F. stage 1 and coil 3 is corrected by means of condensers 19 and 20. Stability of the damping reduction is obtained by negative feedback resistor 9 in the cathode of valve 4.
Patent GB-454402-A (GB)
Title: Improvements in and relating to reservoir, dam, or like wall construction
IPC: E02B7/08
Filed: 1935-12-03
Abstract: 454,402. Dams. PARKINSON, E. H., 16, Roydstone Road, Bradford Moor, VINT, W. T., Commercial Bank Building, Piece Hall Yard, and GARDNER, T. E., 23, Cheapside, all in Bradford, Yorkshire. Dec. 3, 1935, No. 33417. [Class 68 (ii)] A dam consists of units with edges or flanges projecting in to the water, so that a watertight joint may be made between these flanges, and. kept tight by the pressure of the water. The Figure shows part of a dam or reservoir wall comprising blocks A<1>, A<2>, each with two wings or webs F ; these are placed in proximity so as to form joints J, which are sealed by material such as mastic asphalt. In a modification gates are placed in the inspection space S so as to close if the joint J fails. The back of the space S may be closed by plates S<1>.
Patent GB-381768-A (GB)
Title: Improvements in or relating to picture-telegraph, television and like systems
IPC: H04N5/202
Filed: 1931-12-02
Abstract: 381,768. Thermionic amplifiers. ETABLISSEMENTS E. BELIN, 56, Faubourg St-Honore, Paris. Dec. 2, 1931, No. 33430. Convention date, Dec. 4, 1930. [Class 40 (v).] Amplitude distortion in signal currents obtained from a photo-electric cell 1 in copying- telegraphy and the like is compensated by feeding the input to the amplifier 4 .. 7 of the photo-electric currents from an auxiliary source 2, and varying the energy supplied in dependence on the amplitude of the signal current. A rectifying valve 21 in parallel with a valve 6 in the amplifier has a resistance 23 in its output with a variable tapping connected to a valve 3 in series with the auxiliary cell. The cell is connected to the grid of the valve 4 and is illuminated by unmodulated light interrupted at the same frequency as the modulated light incident on the main cell. The auxiliary cell may be replaced by any generator in phase with the light interruptions, or the auxiliary cell may be eliminated. The Specification as open to inspection under Sect. 91 (3) (a) comprises also inserting the valve 3 in the circuit of the main cell. This subject-matter does not appear in the Specification as accepted.
Patent GB-656228-A (GB)
Title: The manufacture of analgesics from pyridazone and pyridazine derivatives
IPC: C07D401/04
Filed: 1948-12-30
Abstract: Amino- and substituted amino-pyridazines and pyridazones having other hydrocarbon substituents are obtained by treating the corresponding 3-halogen-pyridazines, and 4- or 5-halogen-pyridazones with ammonia or substituted amines.  In examples, 3-dimethylamino - 6 - phenylpyridazine, 4-mononomethylamino and 4 - diethylamino - 2 - phenyl - 6 - methyl - 3 - pyridazone, 4 - amino - 2 - m - tolyl - 6 - methyl - 3 - pyridazone, 4 - amino and 4 - dimethylamino-2 : 21 - pyridyl - 6 - methyl - 3 - pyridazone, and 5-amino - 2 : 6 - dimethyl - 3 - pyridazones are obtained by treating the corresponding chloro-compounds with ammonia or the corresponding amine in alcoholic solution.  In the pyridazines the 6-position may be aryl and the remaining 4- and 5-positions may be methyl and in the pyridazones the 4- and 5- or 4- and 6-positions may be methyl.  The products are analgesic.  5-Chloro-2 : 6-dimethyl pyridazone is obtained by chlorinating 2 : 6 - dimethyl - 3 - pyridazone.  The 4 : 5-dichloro-compound is also formed.  2-m-Tolyl- and pyridyl-6-methyl-3-pyridazinones are obtained by heating levulinic acid m-tolyl hydrazone, and the corresponding mixture of the acid with 2-pyridyl-hydrazine.  4 - Chloro - 2 - m - tolyl - 6 - methyl - 3 - pyridazone is obtained by the action of phosphorus pentachloride/phosphoryl chloride mixture on the above.  4 - Chloro - 2 : 21 - pyridyl - 6 - methyl - 3 - pyridazone is obtained by the action of phosphorus pentachloride/phosphoryl chloride on the pyridyl derivative of the corresponding pyridazinone.  Specifications 600,532 and 631,755 are referred to.
Patent GB-914424-A (GB)
Title: The treatment of cellulosic textile fabrics
IPC: D06M15/55
Filed: 1960-09-29
Abstract: 1,1,3-tris-(2,3-epoxypropoxy)butane is prepared by reacting crotonaldehyde with allyl alcohol and treating the 1,1,3-triallyloxybutane thus produced with a solution of peracetic acid in ethyl acetate.ALSO:Textile fabrics consisting of or containing cellulosic fibres, e.g. cotton, linen and viscose rayon, are rendered shrink- and creaseresistant while imparting to them properties such that, after laundering, they possess a soft smooth finish with substantially no ironing, by impregnating them with an aqueous solution containing 1,1,3-tris-(2,3-epoxy-propoxy) butane and then heating the fabrics to cure the epoxide.  The solution may contain 1-30% by weight of 1,1,3-tris-(2,3-epoxypropoxy) butane, 0.01-10% by weight of an epoxy curing catalyst, e.g. magnesium, tin, cadmium, sodium and zinc fluoborates, boron trifluoride etherate, stannic chloride, boric acid, alkane sulphonic acids, aluminium chloride, hydrochloric, phosphoric and oxalic acids, magnesium chloride and sodium, zinc and aluminium sulphates, other polyepoxides, aminoplast resins, e.g. dimethylol ethylene urea, melamine-formaldehyde resins, mono-and dimethyl ureas and methylated methylol ureas, plasticizers, natural resins, textile softening agents and stabilizers.  After impregnation the fabric may be dried by allowing it to remain in contact with the air or by heating to 35 DEG -100 DEG C., cured by heating to 120 DEG -200 DEG C. for 30 seconds-10 minutes, scoured with water containing a laundry detergent at 40 DEG -90 DEG C. and then dried.
Patent GB-1496178-A (GB)
Title: Method and apparatus for the biological treatment of waste water
IPC: C02F3/04
Filed: 1975-08-12
Abstract: 1496178 Biological treatment of waste water UHDE GmbH 12 Aug 1975 [14 Aug 1974] 33579/75 Heading C1C The concentration of odorous substances in exhaust air from a biological treatment of waste water is reduced by reducing the overall exhaust gas volume; this is achieved by a method which includes the steps of (a) treating with air in a trickle filter and, in a subsequent step (b) treating said water again with air in an aeration basin, the air used in step (a) comprising, at least in part, exhaust air from step (b).
Patent GB-413941-A (GB)
Title: Improvements in or relating to aircraft of the helicopter type
IPC: B64C27/18
Filed: 1933-11-30
Abstract: 413,941. Helicopters. DORNIER, C., Friedrichshafen, Lake Constance, Germany. Nov. 30, 1933, No. 33637. Convention date, Feb. 11. [Class 4.] In a helicopter in which the wings are driven by fluid reaction, arms 5 on a hub 1 are hinged to the wings 6, the joints between the arms and wings being covered by flexible airtight sleeves 8. A fan 3 driven through a shaft 4 rotates within the hub. The arms and wings are hollow, the hinges may be situated in the common medial plane of the wings and the arms may be given an aerofoil profile.
Patent GB-1057464-A (GB)
Title: Wrinkle-free metal shells and the production thereof from flat metal foil
Inventor: VOLD GORDON ARTHUR
IPC: B21D51/26
Filed: 1964-08-18
Abstract: 1,057,464. Stamping. EKCO CONTAINERS Inc. Aug. 18, 1964, No. 33768/64. Heading B3Q. [Also in Divisions B6 and B8] A method of forming a shell, Figs. 1 and 4 (not shown), from a metal foil blank (40) comprises pressing the blank between a die and a punch (32), at the start of the pressing operation the die and a gauge plate (33) being in non-clamping relation with opposite faces of the blank. A steel foil may be drawn down to form a cylinder with a diameter reduction of 36À2-47À3%, or an aluminium foil container (20) may be formed. The gauge-plate (33) advances with the punch until arrested by stop-screws (43S) without applying pressure to the blank. As the punch draws the blank into the die.eavity, the circumference of the blank is reduced, causing circumferential compression and a consequential increase in thickness of the flange-part of the blank engaged between the die and plate (33). Pressure between these parts and the thickened flange irons out any waves forming in the flange. Any wrinkles formed in the wall (220) of the container are finally ironed out by compression between the punch and die-wall.
Patent GB-806170-A (GB)
Title: Improvements in or relating to collapsible shelters
Inventor: SCHOOLING FRANK HENRY
IPC: E04H15/38
Filed: 1955-11-25
Abstract: 806,170. Folding garages. MACBEAN & CO., Ltd., E. July 13, 1956 [Nov. 25, 1955], No. 33853/55. Class 20(1) A collapsible garage or shelter of frames 1-7 each pivoted on pins 13 between side plates 11, 12, Fig. 3, and covered with a flexible sheet is provided with a cross board 18 on the first frame to wedge under the front wheels of a car so that the frames can be elevated by pulling on a cord attached to the other end frame. Fig. 4 shows the device folded where the frames do not over-lap to injure the fabric.