baber/WOPTO huggingface dataset:
Patent GB-1055531-A (GB)
Title: Improvements in or relating to the preparation of 3-pyrazolidinones
Inventor: WILLEMS JOZEF FRANS
IPC: G03C5/30
Filed: 1964-02-10
Abstract: 1,055,531. Pyrazolidinones. GEVAERT, PHOTO-PRODUCTION N.V. Feb. 10, 1964 [Feb. 12, 1963], No. 5419/64. Heading C2C. The invention comprises substituted pyrazolidinones of the formula wherein R1 R2 and R3 are each alkyl, aryl or aralkyl groups, and R4 is an aryl or substituted aryl group, which are prepared by oxidizing the corresponding pyrazolidinone of formula in an alcohol or phenolic medium. Suitable oxidizing agents are mercuric oxide and selenium dioxide. The examples describe the preparation of 5 - alkoxy - 1 - (p - tolyl) - 4,4 - dimethyl - 3 - pyrazolidinone and 5 - alkoxy - 1 - phenyl - 4,4 - dimethyl-3-pyrazolidinone, wherein the alkoxy groups are ethoxy, n-propoxy, iso-propoxy, nbutoxy and benzyloxy.
Patent GB-306416-A (GB)
Title: Improvements in or relating to valves or closure devices for pipes
IPC: F16K3/10
Filed: 1929-02-18
Abstract: 306,416. Westling, C. J. Feb. 18, 1928, [Convention date]. Rotary disc valves; wedging or jamming.-A rotary sliding valve plate 5 operates between end sections 9 of a pipe line 6 provided with flexible flared lips 13, the sections being pressed upon and released from the valve plate with a unidirectional differential movement after being closed or before being opened by differential screws enclosed by sleeves and caps 20, the said screws operating pairs of nuts disposed at the corners of triangular frames 8 bracketed to the end sections 9. The screws have multiple-threads of the same direction but of different pitch. The screws are rotated by a chain 63 passing over chain wheels 62 at the corners of the frames and, with overlapping bights looped at 64, over a sprocket 65 and rollers 66 with a final slack loop 68. The sprocket 65 is rotated by a chain wheel 70 and chain 72. When the pressure of the pipe sections on the valve plate has been eased the valve plate is given rotary movement about its pivot 83 on one of the frame brackets by a rack segment 84 and pinion 85 operated by a chain wheel 87 and chain 88. The valve plate is prevented from accidental turning by pivoted catch pawls or dogs 92 releasable by suitable cord 96. The ends of the differential screws are enclosed by sleeves and caps to hold lubricant and for protection from dirt.
Patent GB-175996-A (GB)
Title: Improvements in removable wheels for motorcars and the like vehicles
IPC: B60B3/18
Filed: 1922-02-24
Abstract: 175,996. Gonzalez de Andia-Yrarrazaval, G. Feb. 26, 1921, [Convention date]. Void [Published under Sect. 91 of the Act]. Detaching from, and attaching to, permanent hubs.- A cover-plate for the securing means of detachable wheels consists of a dished cap 15 of resistant material such as metal r;r vulcanite, with a lining 18 of flexible material such as felt or greased or oiled fabric. The cover may be secured in position by a central screw 17.
Patent GB-701079-A (GB)
Title: Check valve device
Inventor: COFFEY IRVEN E
IPC: F02M59/14
Filed: 1952-03-03
Abstract: 701,079. Diaphragm pumps. CARTER CARBURETOR CORPORATION. March 3, 1952, No. 5522/52. Class 102 (1). [Also in Group XXIX] The inlet and outlet check valves in a diaphragm pump of the kind used for the fuel supply to motor vehicle engines and described in Specification 647,789 each consists of a valve disc 30 of material such as a phenolic condensation substance loaded by a spring 31 which engages an inclined surface 33 of a recess in the disc to provide a wedging action which causes slight rotational movement of the disc each time it is opened due to the torsional deflection of the spring as it is compressed. As the valve starts to close the inertia of the spring causes the wedging action to be relaxed so that the valve disc closes without rotation. The valve disc is housed in a cage 25 and coacts with a seat 29 which is pressed into the cage.
Patent GB-486778-A (GB)
Title: Improvements in finely divided magnetic materials
IPC: H01F1/24
Filed: 1937-02-24
Abstract: Magnetic dust for inductance coil cores may comprise an alloy of 80 per cent of nickel and 20 per cent of iron, or 95 per cent of iron and 5 per cent of silicon, the iron being obtained by reduction of the oxide in hydrogen.  The alloy may be formed by heating a mixture of its constituents or a mixture of oxides or other reducible compounds of the constituents, this heating also forming one step in a process for obtaining dust of a given grain size.  Specifications 423,823 and 456,739 are referred to.
Patent GB-234899-A (GB)
Title: Improvements in or relating to multi-cylinder marine steam engines
IPC: F01L31/16
Filed: 1924-03-04
Abstract: 234,899. Lentz, H. March 4, 1924. Beat or lift valves.-A multiple-cylinder, compound, marine steam-engine has separate admission and exhaust valves operated by oscillating cams arranged between them in their casings. The high-pressure inlet and transfer valves are arranged in the same or separate casings, and the low-pressure exhaust are in a separate casing. In the construction for a Woolf's engine shown in Figs. 1 and 3, the high-pressure valves 8 and valves 10 controlling the exhaust from the highpressure cylinder to the low-pressure cylinder, are arranged in a common chest 23 and are - operated by a common shaft 25, the low-pressure exhaust valves being arranged in a chest 24 on the other side of the cylinder and provided with a separate operating-shaft 26. In a modification, the valves 8, 10 are arranged in separate chests and are operated by separate shafts. In a further modification for engines with cranks at 90‹, the high end low-pressure cylinders are provided with separate exhaust and inlet valves respectively arranged in a chest which comprises an intermediate receiver.
Patent GB-486685-A (GB)
Title: Improvements in cold storers for liquefaction and rectification of gases
IPC: F25J5/00
Filed: 1937-02-24
Abstract: 486,685. Separating gases by liquefaction. GES. FUR LINDE'S EISMASCHINEN AKT.-GES. Feb. 24, 1937, No. 5598. Convention date, March 26, 1936. [Class 8 (ii)] In a heat-storage device through which fresh gas and cold decomposition products from its liquefaction and rectification pass alternately, (1) the heat capacity of the storing material measured in kilogram-calories is taken between 0.05 and 0.02 of its surface measured in square metres ; (2) the amount of heat transferred per degree centigrade difference of temperature is maintained at or over one-fifth of the amount actually transferred in the same period of time ; this may be effected by choice of spacing of the spiral metal heat storage strips so that the air velocity is at least one metre per second. The heat capacity in the different temperature zones may be selected to increase or decrease with the corresponding variation in the specific heat of the gases flowing through that part ; the heat capacity of the whole storing material may be eight times that of the gas passing through in any one period.
Patent GB-457721-A (GB)
Title: Receiving arrangements for high frequency signalling systems
IPC: H03D1/26
Filed: 1936-02-25
Abstract: 457,721. Valve circuits for wireless reception. LORENZ AKT.-GES., C., 1, Lorenzweg, Tempelhof, Berlin. Feb. 25, 1936, Nos. 5644, 5645, and 5646. Convention dates, Feb. 25, 1935, April 10, 1935, and Aug. 16, 1935. [Classes 39 (i) and 40 (v)] In a receiving circuit employing a magnetically controlled valve, the input oscillatory circuit is symmetrically connected to a divided anode, the magnetic field intensity is adjusted according to the received frequency and the anode potential is such that normally the anode current is zero but incoming signals set up oscillations in the receiving circuit. The optimum value of field intensity is constant for anode potentials not exceeding a critical value. In the arrangement shown in Fig. 2, the telephone or other receiving instrument is connected over a choke to the mid point of wire K connecting the Lecher wires L. A grid with small positive bias may be employed, and the Lecher wire system may oscillate at a multiple of the received frequency in which super-regenerative or beat reception may take place. The circuit may be brought to the verge of oscillation by controlling the filament heating potential and an audio frequency anode potential source may be employed. In a modification, Fig. 4 (not shown), an intermediate frequency injected into the anode or grid circuit is modulated in accordance with the modulation of the incoming signals, amplified, and rectified. The intermediate frequency may be applied to the anode members in phase opposition, Fig. 5 (not shown) in which case the pulsations in the anode circuit are of a frequency double the intermediate frequency. In determining the steady anode potential, the amplitude of the intermediate frequency injected into the anode circuit must be taken into account. A circuit tuned to the intermediate frequency or a multiple thereof is included in the anode circuit. When a doubly modulated carrier is being received, the intermediate frequency is equal to or a multiple of the intermediate carrier frequency. The signals may be amplified, before application to the receiving valve, by means of a negative resistance comprising a back-coupled valve or a valve B, Fig. 6, with a highly positive grid. Thermionic valves. The subdivided cylindrical anode of the magnetically controlled valve has a diameter in millimeters greater than twice the wave length in meters, preferably 20 wave lengths, the length of the cylinder being equal to or smaller than the diameter. The anode may be subdivided into four or more portions, opposite pairs being connected and the external connections being made to the mid-points of the connecting members. The magnetic field may be limited to the anode-grid space by suitably constructed polepieces or by magnetic screening and negative plates may be disposed at the ends of the anodes and given a slight potential difference to compensate the small field due to the filament. Small air gaps are used.
Patent GB-213741-A (GB)
Title: Improvements in or relating to table-mats or the like
IPC: A47G23/03
Filed: 1923-02-28
Abstract: 213,741. Dell, F. F. Feb. 28, 1923. Mats. - A tablemat consists of a sheet of heat-insulating material 10, Fig. 2, such as rubber, preferably vulcanized crepe, having on one or both faces a layer of openmesh material 11, preferably of a non-absorbent and flexible nature, which has poor heat-conducting properties. The open-mesh material is of vegetable fibre, such as cotton, and is preferably formed with protuberances so as to facilitate the circulation of air between the mat and the table. The mesh material 11, Fig. 3, may be formed as a bag with an opening 12 through which the rubber sheet 10 may be inserted. A detachable ornamental cover may be provided.
Patent GB-540099-A (GB)
Title: Improvements in and relating to safety razors
IPC: B65D83/10
Filed: 1940-04-01
Abstract: 540,099. Safety razors. BENJAMIN, S. H. April 1, 1940. No. 5838. Convention date, May 4, 1939. [Class 30] A safety-razor assembly consists of a clamp 20, Fig. 8, guard 26 and spare-blade magazine 32 longitudinally superimposed and secured together without movement by additional means fixedly carried by the clamp or magazine. The assembly may carry a blade 30 ready for use and may be housed within the handle 25. In the form shown, the clamp 20 has end lugs 21 undercut to receive the guard and magazine with a friction fit. The clamp may carry a screwed stud 24 or internally threaded sleeve. In a modification, Fig. 15, the magazine has resilient curved members 44 which engage the teeth of the guard, or the members may be extended to engage the sides of the clamp.
Patent GB-498722-A (GB)
Title: Improvements in reflectors for illuminating an elongated rectangular field
IPC: F21V7/04
Filed: 1938-02-24
Abstract: 498,722. Reflectors. ZEISS IKON AKT.- GES. Feb. 24, 1938, No. 5891. Convention date, Feb. 25, 1937. [Class 75 (ii)] A reflector system for illuminating an elongated rectangular field from the centre of a narrow side of the field comprises two main parts of different fundamental optical forms, one of the main parts being arranged behind the light source and illuminating the remotely situated portions of the field and the second main part which illuminates the near field portions being of open ended tubular form and arranged in front of the light source and within the path of the rays from the first part, but with the least possible interception of said rays. Behind the source of light 1, is a reflector comprising an upper paraboloid 2 with axis 3 and a lower paraboloid 7 with axis 8. In front of the source is the tubular reflector comprising an upper part 11 and a lower part 16 which is a paraboloid of short focal length with axis 17. The part 11 has a cross section which gives substantially uniform illumination in the transverse direction of the field. That part of the paraboloid 7 which would be masked by the paraboloid 16 is replaced by a spherical segment 20 adapted to reflect light on to the reflector 11 as shown by the rays 12, 13. In a modified form the paraboloids 2 and 7 have a shorter focal length and the collection angle is 180‹. With this latter form the entire reflector, if of glass, may be made in one piece.
Patent GB-269294-A (GB)
Title: An improved tyre repairing apparatus
IPC: B29C35/00
Filed: 1926-03-02
Abstract: 269,294. Matthews, A. March 2, 1926. Portable vulcanizers.-Apparatus for effecting internal repairs to tyres comprises a hollow mould 2 with heating means such as gas jets 13 and a baffle plate 14, mounted between the arms 6 of a U-shaped frame, a flue being provided for the escape of the products of combustion. An electric heater may replace the gas jets. The flue 19 may be formed in one of the arms 6, and may pass through one of the rods 21 by which the apparatus is secured to a bench &c. The tyre is secured on the mould by a flexible wrapping 11 which passes round a stirrup-shaped member 8 carried in the U frame 6 by a screw 9 and nut 10, by means of which tension may be put on the wrapping. The width of the mould 2 may be adjusted by the insertion of distance pieces.
Patent GB-415147-A (GB)
Title: Improvements in or relating to closures for cans, jars and other receptacles for food
IPC: B65D39/02
Filed: 1933-02-27
Abstract: 415,147. Closures for cans. SURE SEAL & SUTAX, Ltd., 10, Charterhouse Street, BARLOW, R., 28, Kingsway, HUXLEY, J. H., and SUTCLIFFE, T., 10, Charterhouse Street, both in London. Feb. 27, 1933, No. 5968. [Class 125 (iii).] An open ended can &c. is provided with a glass closuring element 6, the underside 7 of which has a convex or conical surface or a surface with radial sloping depressions so that air bubbles arising from the contents are deflected upwards into a recess 9 which also accommodates the gasket 3. The transparent end may be secured by a ring which is either spun or screwed to the can. The end of the can may be deflected inwardly to insulate the gasket from the contents.
Patent GB-545896-A (GB)
Title: Improvements in or relating to fastening means
IPC: F16B37/06
Filed: 1941-05-08
Abstract: 545,896. Screw sockets ; setting tubular rivets. ELASTIC STOP NUT CORPORATION. May 8, 1941, No. 5978. Convention date, Aug. 3, 1940. [Class 89 (i)] [Also in Group VII] Screw sockets are fixed in the walls of containers or parts of aeroplanes by means of a flanged sleeve expanded by telescoping the screw socket-therein. The screwed sleeve 14 is mounted on the threaded end 52 of an extension 48 of the inserting tool 46 on which the flanged sleeve 12 has been assembled adjacent the anvil 34. The parts are then inserted through the wall 10 as shown in Fig. 2. Arms 42 pivoted to ears 38 on the anvil member are linked by toggles 54 to a sleeve 62 secured on a reduced part at the other end of the tool 46. With the sleeves in the position shown in Fig. 1 and the arms extended as in Fig. 1, the flange 12 is pressed against the wall 10 by the anvil 34 and the arms are collapsed, telescoping the sleeve and expanding the part 12c of reduced bore by the enlargement 18 and turning over the reduced end 22 by the groove 36a in the anvil, securing the sleeves to one another and to the wall 10 as shown in Fig. 3. When the connection is to be fluid-tight the sleeve 14 has a closed end 24. When fluid tightness is not required the sleeve 14 may be tubular and threaded throughout. It may then have lateral slits to facilitate expansion. The flange 12, projection 22 and enlargement 18 may be intermittent instead of continuous.
Patent GB-1465974-A (GB)
Title: Substituted halotriazine derivatives as peroxygen bleach activators
IPC: C02F1/50
Filed: 1974-02-08
Abstract: 1465974 2-halo-s-triazines AMERICAN CYANAMID CO 8 Feb 1974 [21 March 1973] 5993/74 Heading C2C [Also in Divisions A5 and D1] 2,4-dichloro-6-methoxy-s-triazine is prepared by reacting cyanuric chloride with an appropriate quantity of aqueous methanol in the presence of sodium bicarbonate. The product may further be reacted in cold aqueous acetone with one of the following: aniline, morpholine or N-methylaniline to yield a monochloromethoxy-substituted amine derivative. 2,4 - dichloro - 6 - di(cyanomethyl)amino - striazine and 2-chloro-4, 6-bis(dicyanomethylamino)-s-triazine are prepared by reacting cyanuric chloride with imino diacetonitrile in a molar ratio of 1 : 2 or 1 : 13À33 respectively in the presence of dioxan. 2 - chloro - 4 - methoxy - 6 - (dicyanomethyl)- amino-s-triazine is prepared by reacting 2,4- dichloro - 6 - methoxy - s - triazine with iminodiacetonitrile with the progressive addition to the reaction mixture of sodium bicarbonate. A mixed methyl, chloro-s-triazine composition is prepared by reacting cyanuric chloride with methyl magnesium bromide in methylene chloride and THF. 2-bromo-4,6-dimethoxy-s-triazine is prepared by reacting cyanuric bromide with methanol in the presence of sodium bicarbonate. The compounds are used as bleach activators for percompounds.
Patent GB-180432-A (GB)
Title: Improvements in or connected with hose clamps and the like
IPC: F16L33/12
Filed: 1921-02-22
Abstract: 180,432. Glaser, M. Feb. 22, 1921. Clips, band.-Relates to band clips, for hosepipe and like connections, of the kind comprising a flexible band and lever and link members, and consists in forming the lever member 5 with side flanges and an integral pivot formed by cutting away a portion of the metal as shown at 14. The side flanges 12 have holes 18 to receive the flat, bent-wire, link member. The pivot 15 may be provided with a rounded face 16 and a flattened side 17, as shown in Fig. 5.
Patent GB-683795-A (GB)
Title: Improvements relating to heald shafts for weaving looms
IPC: D03C9/06
Filed: 1951-03-13
Abstract: 683,795. Heald shafts; shedding-mechanism for looms. SULZER FRERES SOC. ANON. March 13, 1951 [March 24, 1950], No. 6027/51. Class 142(i) Heald support rods are secured to the heald frames, intermediate their ends, by headed studs engaging apertures in the rods, the studs being perpendicular to the plane of the heald frame. In one embodiment, supports 15, and intermediate stays 14 if provided, each carry a stud 28 engaging a longitudinal slot 41 in the support rods 34. The slots are sufficiently long and of such a width that the rods spring over the heads 32 of the studs and grip the shanks firmly. In another embodiment, the studs may be slotted to provide resilient studs and the corresponding slots in the support rods are then only slightly longer than the breadth of the stud and slightly narrower than the neck of the stud. In the first embodiment, when the support rods are subdivided at the stays 14, each support rod is positioned longitudinally by engaging a stop in a slot in the stay, or the ends of the rods may be reduced so that a shoulder acts as a stop against the side of the stay. Alternatively, stops may be formed by shoulders 43, Fig. 10, engaging the ends of the studs. In a further construction, slotted metal plates, each having a hole that engages a stud, are screwed to the rods; the rods have a corresponding clearance hole for the stud. The heald shaft is operated by rods 24, bell crank levers 23, a driving rod 22 and a cam 21.
Patent GB-953764-A (GB)
Title: Improvements in high frequency coil assemblies
Inventor: WILLIAMSON GEORGE
IPC: H01F17/04
Filed: 1962-02-16
Abstract: 953,764. Coil assemblies. BRAYHEAD ELECTRONIC COMPONENTS Ltd. Feb. 18, 1963 [Feb. 16, 1962], No. 6075/62. Heading H1T. A high frequency coil assembly (Fig. 1) comprises two or more coils 2a, 3a arranged in sideby-side relationship and a common shell 4 enclosing the coils. The shell 4, which may be a block of magnetic material such as ferroceramic or dust-iron material, is provided with a plurality of parallel bores 4a, 4b to accommodate the coils. Each of the bores may include apertures 5 through which project the ends of the coil formers 2, 3 supporting the coils located in the bores, thus allowing access to tuning cores 2b, 3b located within the formers. The shell 4 may be composed of two or more closely fitting ports which are common to all the coils of the assembly. The assembly may be arranged so as to form a band-pass-coupling transformer and may include small capacitors 6 connected across the coils. A screening can 7 and connecting tags may be provided.
Patent GB-1249053-A (GB)
Title: Process and device for the production of continuous random webs
IPC: D04H3/105
Filed: 1969-02-05
Abstract: 1,249,053. Random webs of continuous filaments. VEPA A.G. 5 Feb., 1969 [28 Feb., 1968], No. 6082/69. Heading D1R. A continuous random web of filaments is produced by allowing a plurality of filaments 1 to fall freely onto a sieve drum 3 subjected to a suction draft, and at a substantially higher speed, e.g. 3-20 times greater than the conveying speed of the drum and subsequently consolidating the web. A liquid or pulverous bonding agent may be sprayed or blown onto the filaments 1 before reaching drum 3 by means of jets 10 or onto the condensed web by means of jets 11 or the filaments may be impregnated with the bonding agent. Alternatively the web may be comprised of filaments having different melting or softening points. The web may be consolidated on the sieve drum 3 or passed onto the intake belt 6, which may be a wire mesh belt subjected to suction when it may replace drum 3, and onto a sieve drum 7 subjected to a suction draft in a heatinsulated housing 8 which maintains a hot air or steam atmosphere. The web is heated uniformly to effect drying of any liquid bonding agent present or to melt one fibre component thus consolidating the web. The web may also be consolidated by needling and condensed, e.g. by squeezing before consolidation. Further the consolidation may be effected by high frequency heating, I.R. radiation or convection of a gaseous or vaporous treatment medium. A plaiting device which preferably operates transversely to the direction of passage of the web may be arranged above the sieve drum 3.
Patent GB-536188-A (GB)
Title: Ventilator for use in buildings, ships and vehicles
IPC: F24F13/08
Filed: 1940-04-04
Abstract: 536,188. Ventilators. ROSSITER, R. C. April 4, 1940, No. 6102. [Class 137] A ventilator for use in buildings, ships, or vehicles, and operating by the motion of wind relatively to the ventilator, comprises two vertical perforated surfaces c inclined inwardly within a wall, and provided at their intersection with a vertical vane e, the spaces between the upper and lower edges being covered in by triangular panels d. In one form, the ventilator is secured to a frame a fixed to the wall by screws a<SP>1</SP>, and in another form, the ventilator is recessed into the brickwork, and is provided with lugs which are embedded in the mortar, the triangular panels being, if desired, omitted. According to the direction of the wind, the fresh air enters through the slots f in one or the other of the surfaces, and the stagnant air escapes through the opposite surface, the vane e separating the two air currents.