baber/WOPTO huggingface dataset:
Patent GB-635728-A (GB)
Title: Improvements in luminairs for multiple fluorescent lamps
IPC: F21V7/04
Filed: 1947-07-29
Abstract: 635,728. Fluorescent light fittings. DOANE PRODUCTS CORPORATION. July 29, 1947, No. 20484. Convention date, March 12, 1941. [Class 75 (iv)] A light fitting for fluorescent lamps comprises an elongated open-mouth reflector which in vertical cross-section is a diverging open conic curve having a focus there being two linear fluorescent lamps 24, 25 mounted lengthwise therein one above and parallel to the other and contacting each other along the focal line of the reflector. The laterally emitted light from the upper lamp 24 is reflected by said reflector 21 over the area 27 (left-hand portion of Fig. 2) in a wholly divergent beam d, d and the amounts of direct light from said lamp in the zero to 45 degree and 45 degree to 90 degree zones are shown by the cross-hatching 28 and 29 respectively. The right-hand portion of Fig. 2 shows the amounts of reflected and direct light from the lower lamp 25 by the areas marked 31, and 32, 33 respectively, the reflected light being in the form of a convergent beam c, c which subsequently diverges covering substantially the same area as the reflected light from the lamp 24. In an alternative arrangement to reduce the interception of light from one lamp by the other, the side walls of said lamps may have downwardly and outwardly sloping faces to give an egg-shaped crosssection as shown in Fig. 3. U.S.A. Specification 2,284,046 is referred to.
Patent GB-1434532-A (GB)
Title: Multiple frequency continuous wave radars
IPC: G01S13/32
Filed: 1972-05-03
Abstract: 1434532 Radar DECCA Ltd 3 May 1973 [3 May 1972] 20636/72 Heading H4D In a radar of the kind in which at least two differing carrier frequencies are emitted and the phase difference between respective Dopplershift signals represents range, the frequency difference between two carrier frequencies is so controlled that the corresponding phase differenence is 90 degrees. In one embodiment an oscillator 1 is switched between two frequencies by a square-wave generator 3. The corresponding Doppler-shift signals are fed to a multiplier 9 the output of which is zero if the phase difference is 90 degrees; the output of an integrator 10 so controls generator 3 that this output always tends to zero. For the 90 degree phase difference target range is L/8 where L is the wavelength corresponding to the difference between the transmitted frequencies, and is indicated by a meter 12. In a modification three frequencies are transmitted sequentially in order to resolve range ambiguity, Fig. 2 (not shown).
Patent GB-1088982-A (GB)
Title: Herbicidal compositions
Inventor: CROWDY STEPHEN HENRY
IPC: A01N25/00
Filed: 1963-04-29
Abstract: A liquid aqueous herbicidal composition comprises a 4,4\sv-bipyridylium salt and a regulator which is an organic compound containing N=C or N-C=(O or S) and which is selected from amides, carbamates, anilides, alkoxyureas, diazines, 2-alkoxy- or alkylthio-4,6-di (alkylamino)-s-triazines, N,N\sv-dimethyl-N-phenyl urea, semicarbazides, iodoacetamide, thiocyanates, formylhydrazine, hydrazides, acetoxime, 3-(3-chlorophenyl) thiazolid-2,4-dione, 3-(4-chlorophenyl)- 5-isopropylidine-4-oxo-2 - thiothiolazolidine, 8-hydroxyquinoline and o-phenanthroline.  Surface active agents and corrosion inhibitors, e.g. sodium nitrite, sodium molybdate and sodium metaborate also may be present.
Patent GB-1090316-A (GB)
Title: Method of securing together coacting threaded elements
IPC: F16B39/02
Filed: 1965-05-17
Abstract: 1,090,316. Soldering. G. REITH. May 12, 1966 [May 17, 1965], No. 20726/65. Heading B3R. [Also in Division F2] Coacting threaded elements, e.g. a nut and bolt are fused together by inducing a current in at least one element. The outer element may have a relatively low-melting point core.
Patent GB-1100927-A (GB)
Title: Spring charging mechanism for an electric circuit breaker
IPC: H01H3/30
Filed: 1966-05-11
Abstract: 1,100,927. Ratchet clutches. SQUARE D CO. 11 May, 1966 [16 June, 1965], No. 20776/66. Heading F2C. [Also in Division H1] A closing spring or springs for a circuitbreaker is or are charged by a cam 81 carried on a shaft 79 coaxial with shafts 78, 80. Coil springs 91, 92 surround the ends of the shafts and serve as one-way clutches allowing the shaft 80 (which carries a handle 94) to be oscillated to-and-fro whilst maintaining unidirectional movement of the cam. An electric motor may be connected to shaft 78 for powercharging. Rotation of the cam when the spring is charged is prevented by a stop, the clutch slipping thereafter.
Patent GB-973388-A (GB)
Title: Accessory power drive mechanism for a gas turbine engine
IPC: F02C7/32
Filed: 1963-05-24
Abstract: 973,388. Clutch combinations. G. G. TURNER. (Avco Corporation). May 24, 1963, No. 20783/63. Heading F2C. [Also in Division F1] The invention relates to a gas turbine engine of the kind comprising a first turbine which drives the engine compressor and a second turbine independent of the first which provides the useful power, there being a first drive connection including a one-way drive arrangement from the power turbine shaft to an accessory drive shaft, a second drive connection also including a one-way drive arrangement from the compressor turbine shaft to the accessory drive shaft, the arrangement being such that the greater speed of rotation imparted to the accessory drive shaft by either the first or the second one-way drive arrangement will impart rotation to the accessory drive shaft. The engine shown comprises a compressor 14 and a turbine 24 mounted on a common shaft 30 and a separate power turbine 26 mounted on a shaft 32 which extends through the hollow compressor turbine shaft 30 and which supplies useful power at the forward end 34. Annular combustion equipment is provided at 20. Accessory power drive mechanism is indicated at 36 and comprises an accessory drive shaft 40 which is connected by a first drive connection 42 to the power turbine shaft 32 and by a second drive connection 38 to the compressor turbine shaft 30. The first drive connection 42 comprises gearing 60, 62, 64, shaft 66 and one-way drive device 68. The second drive connection 38 comprises gearing 44, 46, shaft 48, gearing 50, 52, 54, 56 and one-way drive device 58. The relative reduction gear ratio of the two drives is chosen so that above a certain compressor turbine/ power turbine speed ratio, the power turbine drive will rotate the shaft 40 through the clutch device 68 at a faster speed than that achieved by the compressor turbine to the clutch device 58, whereby the necessary load is taken over by the power turbine for the major portion of the engine operation.
Patent GB-164033-A (GB)
Title: Improvements in and relating to pyroxylin solvents and solutions of pyroxylin
IPC: C08J3/09
Filed: 1919-08-25
Abstract: A solvent mixture for pyroxylin comprises ethyl acetate, a liquid aliphatic hydrocarbon of relatively low boiling point such as benzine, and an alcohol such as ethyl or methyl alcohol.  The constituents of the solvent mixtures have approximately the same rate of evaporation, so that precipitation of pyroxylin is obviated; also, the mixture is non-hygroscopic.  Oils, pigments, gums, resins, &c. may be added to the pyroxylin solution.
Patent GB-445845-A (GB)
Title: Process for producing optically sensitive layers
IPC: G03F7/095
Filed: 1934-07-17
Abstract: 445,845. Producing photo-mechanical printing surfaces. ROHLER, H., 47, Eisenbahnstrasse, Leipsic, Germany. July 17, 1934, No. 20930. Void [Abridged as open to inspection under Sect. 91 of the Acts, Jan. 18, 1935]. [Class 98 (ii)] Light-sensitive layers adapted for use as resists in the production of photo-mechanical printing-surfaces comprise solutions or emulsions of substances, rendered insoluble by exposure in the presence of chromates or the like, to which are added one or several solvents of different dissolving power, or one or several non-solvents. Albumen, gums, natural and artificial resins sensitized with chromic acid may be used. Saponification products of resins with inorganic or organic bases, esters of resins, or condensation products of resins with nitrogen compounds may be used. Non-sensitizable substances such as resins, waxes, balsams, fats, oils and fatty acids may be added. Saponified shellac and albumen may be sensitized with ammonium bichromate. The copy may be reversed by coating with colour, asphalt or varnish and dissolving the negative image.
Patent GB-388658-A (GB)
Title: Improvements relating to the manufacture of imitation marble mouldings
IPC: B28B1/00
Filed: 1932-07-25
Abstract: 388,658. Colouring artificial stone. LOMBARDI, L., Gianotti, near Lucca, Italy. July 25, 1932, No. 20952. [Class 22.] Artificial marble is made by immersing a netting with irregular meshes which is impregnated with a mixture of cement and a colour similar to the veins in a layer of cement slurry coloured as for the ground surface and drawing the netting through this layer. The layer may be backed with a layer of concrete, optionally reinforced. As shown, Figs. 1 and 2, the coloured netting 3 which may be any kind of fibre, is laid on the bottom of a press mould 2. The ground layer mixture 4 is poured in and before it is set, the netting is drawn out. To accelerate the setting of the ground layer it may be dusted over with a mixture of sand and cement before filling the frame with the concrete mix.
Patent GB-389360-A (GB)
Title: Improvements in or relating to power transmission mechanism
IPC: B60T7/12
Filed: 1932-07-25
Abstract: 389,360. Brakes. TENNANT, W. J., 111, Hatton Garden, London.-(Matson Co. ; 40, Main Street, Concord, New Hampshire, U.S.A.) July 25, 1932, No. 20973. [Class 103 (i).] A device for preventing reverse movement of :a shaft particularly applicable to motor vehicles comprises a band brake adapted to be applied to the shaft by a uni-directional clutch device and means operated by the gear lever when this is moved to the reverse position to render the clutch device and thus the brake inoperative. A brake band 21 surrounding a drum 19 on the drive shaft 25 of a motor vehicle is secured at one end to a fixed pin 23 and at the other end to an arm 24 freely mounted on the shaft. The upper end of the arm carries in a recess a roller 30 adapted to engage an inner cylindrical surface 28 of the drum. A lever 32 pivoted to the arm 24 is adaped to be engaged by the inclined edge 36 of a collar 35 slidable on the shaft by a levef 39 pivoted at 40. When the shaft rotates in the counterclockwise direction the roller 30 remains in the wider part of the recess between the lever 24 and the drum surface 28 against a spring 31, but rotation of the shaft in the clockwise direction causes the roller to wedge in the narrow part of the recess and to partly rotate the arm 24, thus tightening the brake band on the drum. If however the gear lever is moved to the reverse position, a member 44 extending from the transmission casing 10, is moved to the right to actuate the lever 39, collar 35 and lever 32, thus holding the roller in the wider part of the recess so that the brake is not applied.
Patent GB-1211979-A (GB)
Title: Optical display and recorder device
IPC: G01D15/14
Filed: 1969-04-25
Abstract: 1,211,979. Uses of photochromism. SINGERGENERAL PRECISION Inc. 25 April, 1969 [14 Oct., 1968], No. 21144/69. Heading C4S. An optical data display and photochromic film recorder. comprises a photochromic film 32, a laser 10 adapted to emit infra-red radiation against film 32 concurrently with or subsequent to the exposition of U.V. radiation from Xenon lamps 34 for instance, and means including rotating galvanometer mirrors 12 and 20 for example for deflecting the laser beam concurrently in two directions to produce a planar X-Y co-ordinate image. The laser beam may be interrupted by rotating mirror 24 deflecting the beam across aperture 26. Image persistance may be varied by the use of externally applied heat, or by controlling the U.V. exposure after selective erasure by infra-red. For instance, the film may be exposed to U.V., and filter 60 then inserted to terminate U.V. exposure during infra-red exposure. The visible emission from Xenon lamp 34 may be used to project a visible image of the data utilizing dichroic reflecting mirror 40, U.V. and visible filter 42, and lens systems 44 and 46. U.V. radiation of wavelength 3400 to 4400 Š and infra-red radiation of one micron is instanced.
Patent GB-877341-A (GB)
Title: Improvements relating to electric lighting units
Inventor: COOK SIDNEY ARTHUR
IPC: F21V17/00
Filed: 1957-07-04
Abstract: 877,341. Electric light fittings. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. June 11, 1958 [July 4, 1957], No. 21213/57. Class 75(4). In an electric lamp enclosure of generally rectangular form having internal light reflecting surfaces along parallel sides and light diffusing or transmitting means such as louvres, the reflecting surfaces are provided on parallel side members, one or more of which on opposite sides of the enclosure are pivoted for outward movement to permit access to the interior. In the form shown, the enclosure 1 is of elongated shape and is supported on the trunking described in Specification 770,999. The enclosure 1 includes a U-shaped metallic supporting bracket 2 at each end, the free ends of the brackets being formed with spaced inturned flanges 2b connected by angle sections 3 secured to the flanges 2b. The flanges of the angle sections 3 provide ledges forming a seating for a rectangular louvre or other diffusing means 6. The metal between the flanges 2b is turned outwards to form pivots 7. The sides of the enclosure are closed by members 8 with. internal light reflecting surfaces, the lower edges of the members 8 being turned over and the ends crimped to retain pins 9 engaging the pivots 7. The enclosure is closed by end plates secured to the brackets 2. The enclosure is supported on the trunkirig 11 by winged members 12 mounted on but spaced from the brackets 2, the members 12 being passed through a slot 11a in the trunking and turned through a right angle.
Patent GB-1026989-A (GB)
Title: Relaxation circuit which provides a number of pulses from a current input
Inventor: DUBRAU HANS-JOACHIM
IPC: H03K3/04
Filed: 1964-05-22
Abstract: 1,026,989. Analogue-digital conversion. VAKUTRONIK WISSENSCHAFTLICHER INDUSTRIEBETRIEB DRESDEN. VEB. May 22, 1964, No. 21244/64. Heading G4H. The number of pulses from a relaxation circuit Ro1, Ro2, Fig. 3, is caused to vary in accordance with the charge on a capacitor Ci as determined by the input signal IE in conjunction with a fixed voltage UB, the output pulses UA being recorded by a pulse counter (not shown). The circuit is suitable for connection to sources having a high output impedance such as secondary electron multipliers, radiation detectors or particle accelerators. A stabilized voltage Ug is supplied to the control grid of valve Ro2 so that with no input signal Ro2 is conductive and Ro1 non-conductive due to the potential applied to its control grid by capacitor Ci charged from source UB. The capacitor Ci retains this charge since Ro1 has no grid resistor. When an input signal is applied the capacitor Ci discharges sufficiently for Ro1 to conduct, thereby making Ro2 non- conductive for a time determined by time constant CrRg, after which Ro2 conducts again to recharge Ci and the cycle will be repeated if the charge applied to the input is sufficient to discharge Ci again. A diode G1 is connected across resistor Rg to eliminate subharmonics. A diode Ro3 prevents valve Rol from drawing grid current with large input signals so that at these high inputs the circuit operates as a multivibrator and thus indicates by the increased pulse repetition frequency that the input has exceeded the limit for linear measurement.
Patent GB-725507-A (GB)
Title: Coin-freed liquid dispensing apparatus
IPC: G07F13/00
Filed: 1953-07-31
Abstract: 725,507. Coin-freed apparatus. DOMENECH, J. P. July 31, 1953 [Aug. 28, 1952], No. 21271/53. Class 27. Coin-freed liquid dispensing apparatus comprises a pump 9, Fig. 2, communicating with a liquid container 7, Fig. 1, a piston 12 for operating the pump being actuated by a spring-loaded rocker 18, a spring-loaded pivoted part 24, Fig. 6, adapted to engage the rocker, a spring-loaded actuating lever 32 having means 35B for engaging the pivoted part 24, and a balance piece 30, Fig. 5, connected to the lever 32 by a spring 33 and adapted to bear against the coin 25, Fig. 5, and press it against the pivoted part 24, and the arrangement being such that when a coin has been inserted in the apparatus and the lever 32 is depressed, the balance piece 30, through the intermediary of the coin, swings the part 24 so that it can be engaged by the lever 32 to actuate the rocker 18 which in turn operates the piston 12 so that liquid is forced from the container 7 and discharged. After operation, the coin falls under its own weight into a receptacle 5 which is, provided with a locked door 3A. If the lever 32 is depressed with no coin in the apparatus, the movement of the balance piece is arrested by the edges of plates 27 forming the coin slot and an edge 35A on the lever 32 slides against an edge 24A of the part 24 so that the latter cannot be swung sufficiently for the head of a screw 23 to actuate the rocker 18. The piston 12, Fig. 2, has an axial bore 13 leading through a duct 14 to a delivery conduit at the front of the apparatus. When it is depressed by the rocker arm 18, to which it is connected by a pivoted link 17, liquid which has previously entered the lower portion of the pump body 9 through a port 11 is trapped and hence forced by way of the bore 13 into the delivery conduit. The container 7 is transparent so that the liquid level may be observed through a window 38 in the casing 2 and its upper surface is concave so that any liquid spilled during filling through a funnel 10 enters the container 7 through a central drain hole. The casing 2, which is provided with a door 3, is also fitted with a transparent delivery nozzle (not shown) which terminates in a flexible pipe. The apparatus may be used for lighter fuel or perfume, such as Eaude-Cologne.
Patent GB-1307861-A (GB)
Title: Magnetic playback apparatus
IPC: G11B5/29
Filed: 1970-05-04
Abstract: 1307861 Magnetic heads INTERNATIONAL BUSINESS MACHINES CORP 4 May 1970 [28 May 1969] 21302/70 Heading G5R In a multitrack magnetic head in which each element 11 has a bifilar winding, each filament 21, 22 of the inner element(s) 23 has a turn about the core 25, 26 of adjacent elements in the opposite sense to its main winding so as to compensate for signals induced in that winding from the adjacent elements. The windings are connected to a differential amplifier 24 with a high common mode of rejection by an integrated circuit diode matrix 15 incorporated in the head. The individual elements consist of cores 11 glass-bonded to a common ferrite block 10.
Patent GB-405278-A (GB)
Title: Improvements in or relating to electrical musical instruments
IPC: G10H3/20
Filed: 1932-07-28
Abstract: 405,278. Electrical musical instruments. VIERLING, O., 7, Kloedenstrasse, Berlin. July 28, 1932, No. 21322. [Class 88 (ii).] In an electrical musical instrument in which a mechanical vibrator such as a metallic string or fork induces in an electric device currents which are led to a loud-speaker or the like, in order to eliminate touch noise and the tendency to rapid decrease of intensity the said electrical devices are so shaped or arranged relative to the mechanical vibrators that the excitation of the devices is relatively suppressed during the initial oscillations and automatically increases afterwards. In Fig. 3, the pole-piece 10 of an electromagnet 2 having a coil 3 connected to amplifier 5 and loud-speaker 9, is arranged at the side of a string 1 set in vibration by a blow in the direction shown by arrow A. The initial vibrations of the string, parallel to the polepiece, are not translated, transmission only commencing as the string commences to describe an elliptical path. To prevent the ellipse from rotating, the ends of the string may be held as shown in Figs. 5, 5a, 5b. The pole-piece may alternatively be inclined 'to the initial movement of the string (Fig. 3, not shown), with or without a recess in its face (Fig. 6, not shown). Or the pole-piece may have two arms at right angles, Fig. 7. Two pole-pieces at right angles, with separate coils under the control of separate adjustable short-circuiting resistances, may be used (Fig. 8, not shown). Fig. 9 shows a piano-like instrument in which the inclination of the pole pieces 10 is gradually increased for the treble strings T, in which the touch noise is normally most noticeable. An additional damper, actuated by a hand lever or pedal, may be arranged near the ends of the strings to render the decrease in intensity more rapid, if desired, Electrostatic arrangements, simifar to the electromagnetic arrangements, are shown. Either violin or flute-like tones can be produced from a violin with metallic strings.
Patent GB-764094-A (GB)
Title: Improvements in and relating to surface tables
Filed: 1954-07-22
Abstract: 764,094. Surface plates. COVENTRY GAUGE & TOOL CO. (AUST.) PTY., Ltd. July 22, 1954 [Aug. 3, 1953], No. 21380/54. Class 106 (2). A surface table has oblique slots 9 parallel to its sides and/or ends for securing apparatus to it. The sides and ends are true planes and may have screwed holes for bolting to them further surfaceplates which extend above the level of the table. Apparatus such as 14 has a flange 15 secured to its base and engaging a side or end of the table. The sides and ends of the table extend beyond the base 6.
Patent GB-1273315-A (GB)
Title: Signal overload compensation circuit for antenna tuning system
Inventor: JABBAR KAMIL YOUSIF
IPC: H03G3/30
Filed: 1970-05-04
Abstract: 1,273,315. Tuning radio receivers; A.G.C. in transistor circuits. MOTOROLA Inc. 4 May, 1970 [15 May, 1969], No. 21383/70. Headings H3Q and H3T. In a wave signal receiver having a voltage variable reactance 41 in series between the antenna 9, 48 and the input electrode of a transistor 12 included in the RF amplifier, a signal overload compensation circuit for the voltage variable reactance has an AGC circuit 34, coupled with the output of the transistor, deriving an AGC voltage corresponding to the magnitude of the wave signal, the AGC voltage is coupled to the control electrode of the transistor 12 so as to increase the input impedance of the transistor in response to increased output from the transistor so as to limit the voltage drop across the voltage variable reactance 41. The RF amplifier 12 includes a hyper-abrupt varactor diode 16 as may the oscillator 26 for tuning together with the hyper-abrupt diode 41 by adjustment of the potentiometer 20, which may be in the receiver or remotely located. A capacitor 50 may be provided to tune the receiver to the AM band. The input circuit to the RF amplifier 12 includes a series tuned L-C circuit 40, 41 and when the receiver is used in a car whip antenna 9 may be used. A high level input signal causes an increase in AGC voltage to. make transistor 12 conduct less. This increases the input impedance giving and increase in voltage across the base emitter path of the transistor 12 so that the RP signal voltage across the varactor diode 41 does not increase. The signal voltage across the diode 41 is then limited to a voltage below that at which it would act to rectify the RF voltage so as to prevent a detuning voltage occurring.