baber/WOPTO huggingface dataset:
Patent GB-804623-A (GB)
Title: Improvements in or relating to devices for remotely indicating the depth of towed submarine bodies
Inventor: WATT JAMES
IPC: G01S15/96
Filed: 1956-02-10
Abstract: 804,623. Transformers and inductors. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Oct. 2, 1956 [Feb. 10, 1956], No. 4223/56. Class 38 (2). [Also in Groups XXXVIII and XL (c)] An inductance whose value depends on the ambient pressure (e.g. the hydrostatic pressure around a submarine depth-measuring device, (see Group XXXVIII), comprises a coil 9 (Fig. 6), with a ferromagnetic core 8 the position of which is controlled by a spring-loaded plunger 3 operated by the pressure through the aperture 2. Signals from an oscillator u, (Fig. 5), are coupled to a wire w by means of toroidal windings x around a ferromagnetic core m. In an alternative method (Fig. 4) the oscillator output is joined directly to the wire at spaced points, the impedance between which is increased by the presence of a coaxial ferromagnetic body m. The oscillator frequency may be 5-7 Kc/s.
Patent GB-470466-A (GB)
Title: Improved speed-controlling drive, particularly for sound recording and reproducing apparatus
IPC: G11B15/28
Filed: 1936-02-13
Abstract: 470,466. Gearing for conveying rotary motion. WIDGLEY, A. H. Feb. 13, 1936, No. 4343. [Class 80 (i)] [Also in Group XXXVIII] A drive for obtaining constancy of speed and described particularly with reference to the driving of the drum b of a sound camera, comprises a fluid-friction drive for the drum of slightly lower speed than the speed of the film a, loops being provided in the film by means of jockey pulleys i, h before and after the sounddrum. The film is driven to and drawn from the sound-drum by the same sprocket-wheel f, spring rollers g being fitted to retain the film on the sprocket. The sprocket-wheel shaft is driven by a shaft which drives also a heavy casing e, Fig. 2, free on the shaft c of the sound-drum b. The shaft c carries a heavy flywheel d enclosed in the casing e and driven therefrom by fluid-friction. The drum b is a little less in diameter than the sprocket f so that the film is caused to drive the drum at a speed slightly in excess of that imparted to the drum by the drive of the casing e. Specification 316,320, [Class 40 (ii)], is referred to. According to the Provisional Specification the diameter of the drum may also be equal to or greater than the diameter of the sprocket.
Patent GB-414769-A (GB)
Title: Improvements in or relating to supersonic heterodyne receivers for wireless and like reception
IPC: H04B1/26
Filed: 1933-02-13
Abstract: 414,769. Valve circuits for wireless reception. ELECTRICAL & MUSICAL INDUSTRIES, Ltd., Blyth Road, Hayes, and CHARMAN, F. J. H., The Cottage, Parkway, Hillingdon, both in Middlesex. Feb. 13, 1933, No. 4436. [Class 40 (v).] In a superheterodyne receiver, a plurality of intermediate frequencies are generated which are close to one another without the side bands of adjacent intermediate frequencies overlapping, all the intermediate frequencies being fed to a single channel having a band-pass filter whose frequency range is less than that of all the intermediate frequencies and their sidebands. The first detector 3, Fig. 1, has local oscillations supplied from an oscillator 4 modulated by an oscillator 5 generating an auxiliary frequency of e.g. 30 kilocycles. The frequency of oscillator 4, together with the sum and difference frequencies of oscillators 4, 5, beat with the signal frequency to give three intermediate frequencies 9, 10, 11, Fig. 2, which are fed to the intermediate frequency amplifier 6 and second detector 7. The intermediate frequency amplifier comprises a bandpass filter whose frequency range is indicated by rectangles 12, Figs. 2, 3, and is preferably twice the frequency of oscillator 5, Fig. 1. Should the frequency of oscillator 4 drift, the intermediate frequencies 9, 10, 11, are shifted laterally with respect to the rectangle 12, and the second detector will receive portions of the intermediate frequencies 9, 11, to compensate for the loss due to this shift. In modifications, the oscillator 4 may be modulated with more than one auxiliary oscillation, e.g. a series of harmonic oscillations of frequencies f, 2f, 3f &c. such as would be produced by a saw-tooth wave form generator ; the oscillator 4 may produce the auxiliary oscillations and may be a saw-tooth wave form oscillator; the signal frequency may be modulated with the auxiliary frequency before being heterodyned; and the auxiliary frequency may be produced mechanically when the side bands of the signal frequency have a small frequency range.
Patent GB-312955-A (GB)
Title: Improvements in or relating to folding vehicles
IPC: B62B9/12
Filed: 1928-02-13
Abstract: 312,955. Straussler, N. Feb. 13, 1928. Folding vehicles.-In boats, side cars, perambulators, &c. of the kind in which the floor has one end curving inwardly towards the major axis and the other end is truncated or squared, the side walls being continuously jointed to the floor and following its contour so that they can be laid flat on the floor, while the rear wall is similarly connected at its lower edge to the floor, the lower edges of the sides B, C extend to the square end of the floor panel and their top edges end some distance away from the top corners of the rear wall. D the gap being triangular in shape and triangular jointing pieces E, F extend between the sides of the undivided side walls so that when erected they constitute portions of the side walls. The rear wall may be vertical or set back and its upper edge may be narrower than its lower edge. In a modification, the side walls although of full height at the rear may curve downwardly towards the front and the front edge of the floor or bottom may be curved as in Fig. 4. Hinge plates H, J may be provided for securing seats.
Patent GB-1100256-A (GB)
Title: Improvements in and relating to control systems for cranes and the like
Inventor: MUCK SIEGBERT
IPC: B66C13/54
Filed: 1965-02-02
Abstract: 1,100,256. Control of several motors. G. MANGER, and K. H. LADWIG. 2 Feb., 1965, No. 4497/65. Heading H2J. A number of electric motors on a crane are controlled from a remote station which provides signals for starting, accelerating, and decelerating the motors, each motor being associated with a control unit which is structurally similar to the other units and detachably interconnected therewith. Each control unit comprises a pilot motor adapted to be clutched to the shaft of a controller, a receiver for the control signals, and a unit for measuring the current supplied to the associated driving motor. This measuring unit includes a resistor in the motor circuit which develops sufficient voltage on overload to operate an auxiliary relay and prevent advance of the controller until the motor current returns to a normal value. The control unit for the motor which drives the lifting mechanism has additional means for preventing reversal of the motor at the end of counter-current braking operation. The remote control station has a rotary switch associated with rectifiers at the ends of the control line.
Patent GB-452905-A (GB)
Title: Improvements in closures for bottles or like vessels
IPC: B65D51/24
Filed: 1936-02-14
Abstract: 452,905. Caps for bottles. COMPAGNIE DES FORGES DE CHATILLON COMMENTRY & NEUVES MAISONS, 19, Rue de la Rochefoucauld, Paris. Feb. 14, 1936, No. 4593. Convention date, Jan. 22. [Class 12.5 (iii)] A cap 1 for a bottle &c. has an outstanding bead 3 at the top which makes the skirt 2 resilient and facilitates removal. Weakened portions 7 may be provided in the base of the skirt to ensure tearing on removal of the cap. Notches 4 retain the gasket 5. A key 8 removes the cap in the manner shown in Fig. 5.
Patent GB-554580-A (GB)
Title: Improvements in stands for milk coolers
IPC: A47L15/42
Filed: 1942-04-10
Abstract: 554,580. Stands. MARTIN, E. A. April 10, 1942, No. 4699. [Class 52 (iii)] A stand for a milk cooler and vessel has one of the legs b extended upwards through a socket of a head A in which it may be adjustably clamped by a set screw, and a frame or tray C for supporting a milk vessel and having hooks g for suspending the cooler below the vessel is adjustably clamped at E on the upward extension of the leg. The other legs bl may be bent at the top to enter horizontal sockets of the head, or the sockets may be bent to receive straight legs, and these parts are secured by set screws to permit the legs to be spread or to be detached for transport.
Patent GB-831210-A (GB)
Title: Improvements in or relating to sealed cocks, particularly cocks for gas containers for domestic use
IPC: G09F3/03
Filed: 1957-02-12
Abstract: 831,210. Valve accessories. MOOLENAARS, J. Feb. 12, 1957 [June 5, 1956], No. 4796/57. Class 135. [Also in Group XV] To prevent tampering with the contents of a gas container, the draw-off cock 1, having an integral outlet nipple 2 closed during transport by a cap nut 3, is provided with a seal 6 of metal &c. which embraces the cock and at least partly covers the cap nut. The portion of the seal that lies against the body of the cock has reinforcing corrugations 8 which render fraudulent attempt to loosen the cap nut immediately noticeable by their distortion. A round cap nut may be used instead of a hexagonal one, in which case it may have a recess or a projection to engage a correspondingly shaped portion of the seal to retain the latter in place.
Patent GB-696657-A (GB)
Title: Improvements in or relating to propeller pitch changing devices
IPC: B64C11/42
Filed: 1951-02-28
Abstract: 696,657. Variable-pitch propellers. UNITED AIRCRAFT CORPORATION. Feb. 28, 1951. [May 25, 1950] No. 4853/51. Class 114. A lock to maintain the existing pitch is closed by a spring 344 and is opened by hydraulic pressure from the return line 322 from the pitch changing motor 314 to the sump. If the pitch changing demand is large the outputs of both the main pump 32 and the auxiliary pump 34 are added together by the relief valve 60. When it is required to feather the blade, an auxiliary motor operates the pump and the resulting pressure is led by the by-pass 350, the relief valve 45, and the main valve bore 46 to the conduit 340, thus opening the pitch lock. Specifications 683,729, 688,170, 692,119 and 696,658 are referred to.
Patent GB-947971-A (GB)
Title: Packaging of graded articles
Inventor: WALLER DAVID JOHN
IPC: B65D81/00
Filed: 1962-02-08
Abstract: 947,971. Packaging; trays. BOWATER RESEARCH & DEVELOPMENT CO. Ltd. Feb. 8, 1962, No. 4882/62. Headings B8C and B8P. For the packaging of a predetermined approximate weight of any one grade of articles, such as apples, previously sorted into a plurality of grades according to size, there is provided a plurality of sets of trays formed with article-receiving compartments, there being one set of trays for each grade of articles, the number of compartments per tray and the number of trays per set being correlated such that each set receives a predetermined number of articles according to the grade thereof, said number of articles having the said predetermined approximate weight, and a stack of filled trays of any one set, with the articles of one tray nesting with the articles of the adjacent tray or trays, having the same external dimensions as a stack of filled trays of any other set. The trays, which may be made from synthetic film or sheet, or fibrous material, are preferably formed with grooves or ribs in the walls of each compartment to cushion the articles. By " predetermined approximate weight " is meant one which varies within a margin acceptable to the trade dealing with the particular articles being packaged.
Patent GB-761676-A (GB)
Title: Improvements in or relating to the electrodeposition of black chromium-vanadium coatings
IPC: C25D9/08
Filed: 1954-02-19
Abstract: 761,676. Electrodeposition of chromiumvanadium alloys. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. Feb. 19, 1954 [Feb. 27, 1953], No. 4901/54. Class 41. [Also in Group XL (a)] An adherent acid heat-resistant black coating on a metal or conductively coated object, said coating comprising by weight 91 to 18 parts of chromium per part of vanadium and including oxides as well as the metals, is cathodically deposited employing a cathode current density of 400 to 2000 amps./sq. ft. from an aqueous electrolyte at a temperature of 30‹ to 50‹ C. comprising 150 to 350 gms./litre of chromic acid, 2 to 10 gms./litre of vanadium provided by a water-soluble vanadium compound, e.g. as 5 to 20 gms./litre of ammonium metavanadate, there being by weight 91 to 18 parts of chromium per part of vanadium, and from 3 to 20 gms./ litre of a water-soluble carboxylic acid. The cell is preferably lined with glass or ceramic and lead anodes are used. The vanadium compound may alternatively be a vanadium halide or vanadium dissolved in concentrated nitric acid and the carboxylic acid is preferably one or more of formic, acetic, propionic, oxalic, or citric acids. The cathodically coated member may be a steel plate or a copper support for a rotatable tungsten X-ray tube anode while the plating bath anode is a lead plate.
Patent GB-565269-A (GB)
Title: Methods of producing dialkoxy stilbenes
IPC: C07C43/215
Filed: 1942-04-14
Abstract: Trans-dialkoxy stilbenes are prepared by treating with iodine a compound of either of the general formul  <FORM:0565269/IV/1> or <FORM:0565269/IV/2> where R and R1 are the same or different and may be alkyl, alkaryl, aracyl, or halogen substituted acyl or aracyl radicals; R2 and R3 may be the same or different and may be hydrogen, alkyl, alkenyl, aryl or alkaryl radicals.  The amount of iodine is between 0.05 and 0.3 per cent by weight of the compound treated.  The reaction is carried out preferably between 70-140 DEG  C., for a period between 6 and 36 hours depending on the compound which is being treated.  Examples are given of the treatment by the process of the invention of (1) 3:4 - di - (p - methoxyphenyl) - hexane - 3 - ol; (2) 1 : 2 - di - (p - methoxyphenyl) - butane - 2 - ol; (3) 2 : 3 - di - (p -methoxyphenyl) - butane - 3 - ol; (4) 1 : 2-di-(p-methoxyphenyl) 1-phenylethane-1-ol; (5) 1 : 2-di-(p-methoxyphenyl)-ethane-1-ol; (6) 1 : 2-di-(p-ethoxyphenyl)-ethane-1-ol; (7) cis-4 : 41-dimethoxy-a -b -diethyl stilbene; (8) 3 : 4-di-(p-methoxyphenyl)-hexane-3-ol; (9) 3 : 4-di-(p-acetoxyphenyl)-hexane-3-ol; (10 3 : 4-di-(p-benzoyloxyphenyl)-hexane-3-ol; (11) 1 : 2-di-(p-methoxyphenyl)-ethane-1-ol.
Patent GB-925953-A (GB)
Title: Improvements in or relating to motor vehicle doors
IPC: B60J5/00
Filed: 1960-02-11
Abstract: 925,953. Vehicle doors. AUTO UNION G.m.b.H. Feb. 11, 1960 [Feb. 11, 1959], No. 4944/60. Class 103(2). In a detachable vehicle door of the kind having a frame covered with fabric provided with a window opening, the fabric 6, Fig. 2, is secured at its edges to the frame 9 by turn buttons 10 engaging eyes 8, and the frame comprises two parts hinged together at 19, 20. The part 1 of the door to the left of the hinges 19, 20, is securable to the front side of the door opening by means of upper and lower pins 3, 4 of the frame 9, engaging from above, sockets at the side of the opening, and by an extension of the fabric having eyes 5 engageable over turnbuttons 7 on the side of the opening. The part 18 of the door to the right of the hinges 19, 20, is provided in the longitudial members 11, 12 of the frame 9, with further hinges 14, 13, to permit of folding of the door when not mounted on the vehicle. The hinges 13, 14 have stop members 16, to prevent folding in the direction of the vehicle interior, and catches 16, 17 to lock the hinges
Patent GB-384267-A (GB)
Title: Improvements in or relating to electric switch gear
IPC: H02B11/18
Filed: 1931-02-17
Abstract: 384,267. Switchgear structures. ROSSMAN PATENTS, Inc., 20, North Wacker Drive, Chicago, U.S.A. Feb. 17, 1931, No. 5026. Convention date, March 31, 1930. Void [Published under Sect. 91 of the Acts]. Drawings to Specification. [Class 38 (v).] The Specification describes and illustrates a metal-clad switchgear unit which is selfcontained and can be used singly or as part of a group of units in an indoor or outdoor substation. The units are all standardized and preferably mass-produced and each contains an oil circuit-breaker, bus-bars, current transformers, disconnecting devices, and framework (preferably of welded steel), completely assembled and wired ready for installation. A defective unit can be removed and replaced from stock. A plug-and-socket connector between the movable oil circuit-breaker and the fixed part of the gear is also described.
Patent GB-469433-A (GB)
Title: Improvements in and relating to rubber processes and products
IPC: D03D15/00
Filed: 1936-02-19
Abstract: Rubber threads are made relatively inextensible by supplying them, while stretched or unstretched, with a braiding or helical winding of filaments or tapes of gelatine or other substance soluble in a medium that does not destroy rubber or vulcanized rubber, and simultaneously or later causing the covering to adhere to the thread by the use of water or other solvent.  The gelatine may be applied as a tape with overlapping adjacent turns.  The rubber thread, which may be made from latex or a rubber mixture may contain an extensibility reducing substance and may be likewise coated before being covered.  The pitch of a helical winding of gelatine filament say 0,459 to 0,145 mms. dia., may be about six turns to the inch.  After weaving into fabric the covering of the thread may be washed or dissolved away. Specifications 423,997; 440,256, [Group IX], 441,002, 441,124, 441,465, 442,937, 447,972, 448,098, 449,314, 449,462, 459,434, and 467,083 are referred to.
Patent GB-845634-A (GB)
Title: Improvements relating to the production of films and other shaped structures of polyvinyl fluoride and polyvinylidene fluoride
IPC: C08J5/18
Filed: 1959-02-13
Abstract: Films &c., of polyvinyl fluoride or polyvinylidene fluoride are produced by (1) heating a mixture of 85 to 10% by weight of particles of an orientable polyvinyl fluoride or polyvinylidene fluoride having an inherent viscosity of at least one, advantageously of at least 1,5, and preferably 3,5 to 4,0, and 15 to 90%, preferably 40 to 60%, of a latent solvent for the polyvinyl fluoride or polyvinylidene fluoride, to a temperature sufficient to coalesce completely the particles and convert the mixture into a homogeneous liquid (2) extruding this liquid to form a film &c. at an elevated temperature below the normal boiling point of the latent solvent, e.g. at 120 DEG C. to 220 DEG C.; and (3) immediately thereafter cooling the shaped structure to a temperature below 100 DEG C.  A "latent solvent" is defined as an organic liquid having a boiling point above 100 DEG C. (at atmospheric pressure), and having no significant solvent or swelling action on polyvinyl fluoride at room temperature, but being capable, at an elevated temperature below its boiling point, of solvent action sufficient to cause polyvinyl fluoride particles to coalesce.  In addition to homopolymers of vinyl fluoride there may be employed copolymers of vinyl fluoride (preferably in amount of at least 75 to 80% by weight) with monoethylenically unsaturated monomers.  A list of examples of these is given.  The latent solvent may be gamma-butyrolactone, N-methyl-2-pyrrolidone, gamma-valerolactone, propylene carbonate, ethylene carbonate, N-acetylmorpholine, methyl salicylate, cyclohexanone, dimethyl sulpholane, and tetramethylene sulphone.  A long list of other latent solvents is given.  The freshly extruded film is preferably cooled in a quench bath of water or of the latent solvent present in the mixture about 1/4 to 1/2 inch below the lips of the extrusion hopper. The inherent viscosity of the polymers is calculated by means of the formula <FORM:0845634/IV(a)/1> where T0 is viscosity of hexamethyl-phosphoramide at 30 DEG C., T1 the viscosity at 30 DEG C. of a solution of the polymer in this solvent, and C is the concentration of the solution expressed in grams of polymer per 100 ml. of solution, and in the examples is 0=m105.  In an example, a mixture of 83% by weight of polyvinyl fluoride of inherent viscosity 2,5 and 17% of gamma-butyrolactone is extruded at 190 DEG C. into a water bath maintained at 10 DEG C. to produce a flat sheet, the draw-off rate being adjusted to produce a 5 ml. thick film. Substantially all the solvent is volatilized in a current of warm air while the film is restrained to prevent shrinkage.  In other examples the latent solvents listed above are used.  Specifications 605,445, 686,234, 805,388 and U.S.A.  Specifications 2,419,008, 2,510,783 and 2,599,300 are referred to.
Patent GB-1388474-A (GB)
Title: Speed detection
Inventor: BLANYER C
IPC: G01P13/04
Filed: 1972-02-03
Abstract: 1388474 Speed detecting system ABEX CORP 3 Feb 1972 [10 May 1971] 5192/72 Heading B7N In an arrangement for detecting the speed an direction of movement of an object moving along a given path, e.g. a rail vehicle, in which a two coil wheel sensor 21, disposed alongside the track, provides during each wheel passage two output signals each having a duration which varies inversely with vehicle speed and which are spaced by an interval which also varies inversely with the speed, the time duration error introduced due to variation in the distance (transversely of the track) between wheel and sensor is reduced by using for detection a timing duration formed from the sum of the duration of the first occurring output signal and a duration equal to three times that of the time gap between signals. In Figs. 2A and 2B waveforms A1, B1 and A2, B2 show the signals produced by the sensor as different rail vehicle wheels travelling at the same speed pass, respectively, close to and further away from the sensor, whilst pulse signals A1, B1 and A2, B2 commencing and finishing at the half peak amplitude points of the waveforms show the timing errors introduced by the change of distance. A capacitor circuit 51 or 61 including three capacitors in series is associated with each sensor coil from which a voltage representing object speed is obtained by discharging the circuit from a fixed charge, supplied via charge means 55 or 65, at a first rate, set by discharge network 53 or 63, during occurrence of the pulse from the associated sensor and at a second rate, set by connecting compensating discharge network 54 or 64 in parallel with the existing discharge network, during the time interval between pulses. This second rate effectively increasing the rate of discharge by a 3 : 1 factor. Logic control circuit 31 is provided for controlling the charge and discharge circuits and for controlling the sampling by sample and hold amplifiers 56 or 66 of the voltage from the capacitor circuit associated with the first sensor coil to be energized and for passing this speed representing voltage via a further sample and hold circuit 67 to a recorder 68.