baber/WOPTO huggingface dataset:
Patent GB-1209219-A (GB)
Title: Electrochromic shutter
Inventor: SCHREKENDGUST JAY G
IPC: G03B9/08
Filed: 1968-08-16
Abstract: 1,209,219. Photographic shutters. GRAFLEX Inc. Aug. 16, 1968 [Aug. 16, 1967], No.39259/68. Heading G2A. A camera comprises a lens system providing a light path across which is arranged a shutter system comprising a stop member and an electrochromic cell, i.e. a liquid suspension of randomly disposed elongated particles which align under an electric field to reduce the optical density of the suspension; the cell being energized on removing the stop from the light path. As shown, a camera 10 having lenses 11, 12, 13 is provided with an electrochromic cell 15, a stop 30 and a film 14. Depression of a button 33 rotates the stop 30 through rack and pinion 31, 32 and closes contacts 26, 27 to allow energizing of the cell 15 by power supply 21, an exposure timer 22 controlling the period the cell is energized. In another embodiment Fig. 3 (not shown), a stop (45) is opened for a predetermined period during which a cell (47) is switched on and off. In another embodiment Fig. 4 (not shown), a cell (65) and stop (66) are arranged next to each other and adjacent the focal plane of the lens system. Electrodes are disposed on opposing sides 17, 18 of the cell and may be in the form of concentric circles (81 to 84;) Fig. 5 (not shown), selected pairs of which may be energized to provide a variable aperture; or parallel lines (91 to 94) Fig. 6 (not shown), selected pairs of which may be energized for different times to vary the exposure across the film. A control circuit Fig. 7 (not shown), for the electrodes comprises switches (101 to 104) which are actuated by pulses from a generator (116) through triggers (111 to 114). Normally each trigger becomes inoperative after a pulse passes therethrough. and may be controlled by manually settable controllers (121 to 124) to determine the duration of a pulse to the respective switch, thus controlling the exposure time. Alternatively, the triggers may be automatically reset by a reset (115) so that the exposure time depends upon the total number of pulses from the generator.
Patent GB-1150945-A (GB)
Title: Preparing Catalyst for the Combustion of Small Amounts of Gaseous Hydrocarbons in Air
Inventor: ERMSHAUS HANS-DIETER
IPC: B01J23/89
Filed: 1966-09-02
Abstract: 1,150,945. Oxidation catalysts. BADISCHE ANILIN- & SODA-FABRIK A.G. 2 Sept., 1966 i[4 Sept., 1965], No. 39264/66. Heading B1E. Oxidation catalysts are made by co-precipitating Ag and Co from an aqueous solution at above 60‹C., using an alkali metal hydroxide or carbonate in the presence of asbestos fibres. The catalyst may be extruded into pieces of 2 mm. diameter and 10-15 mm. lengths which are dried at 105‹C.
Patent GB-1155636-A (GB)
Title: Container and Lid Assembly
Inventor: BURNS DOUGLAS SNOW
IPC: B65D43/02
Filed: 1967-08-29
Abstract: 1,155,636. Container closures; boxes, &c. AMERICAN HOME PRODUCTS CORP. 29 Aug., 1967, No. 39395/67. Headings B8P and B8T. A resilient lid 17 for a box, &c. 10 having a beaded edge 16 is formed with a cut-away portion 14 which exposes the beaded edge so that the flanged edge 18 of the lid and the beaded edge 16 can be gripped simultaneously by the fingers, &c. of one hand to distort the lid and release it from the box, &c. Inwardly-directed detents 22 spaced around the lid flange snap under the beaded edge 16 of the box, &c. when the lid 17 is applied. The lid 17 may be made from a resilient transparent plastics material. The box, &c. 10 has handles 15 at its ends.
Patent GB-821771-A (GB)
Title: Improvements in or relating to thermionic valves incorporating window seals
Inventor: BARNABY ROY FREDERICK THOMAS
IPC: H01P1/08
Filed: 1956-12-28
Abstract: 821,771. Discharge tubes. M-O VALVE CO. Ltd. Dec. 20, 1957 [Dec. 28, 1956], No. 39558/56. Drawings to Specification. Class 39(1). [Also in Group XXXVI] In the manufacture of a thermionic valve, such as a magnetron or klystron, which incorporates a window seal consisting of a metal ring having a central aperture closed by a sheet of quartz, a central aperture with a tapered edge is formed in the base of a cup-shaped member of a refractory metal such as molybdenum and the metal cup is nested between two quartz cups one of which is provided with a tubular stem extending from its skirt. The rims of the quartz cups are then sealed together whilst, if necessary, an inert gas is passed into the assembly through the tubular stem to prevent oxidation of the refractory metal. The assembly is thereafter heated whilst evacuated to cause the quartz cups to fuse together across the aperture and to progressively collapse on both sides of the metal cup and subsequently the rim ends of the quartz cups are cut away to expose the rim of the metal cup, this rim being then joined to a further part of the valve. Preferably, layers of molybdenum foil are inserted between the skirts of the three cups and the rim ends of the quartz cups are cut away in the region of the foil, the latter serving to prevent the quartz sticking to the metal cup in this region. Specification 821,772 [Group XXXVI] is referred to.
Patent GB-937690-A (GB)
Title: Fluid flow control valves
IPC: F16K7/12
Filed: 1961-11-06
Abstract: 937,690. Valves. GRINNELL CORPORATION. Nov. 6, 1961 [Nov. 17, 1960], No. 39692/61. Class 135. A flow control valve comprises a housing 10, Fig. 3, with a through flow passage and having a side diaphragm opening across which is clamped a diaphragm closure member 43. A seating band is formed in the housing having sloping sides 28a and a bottom 286 which may be curved or flat, the slope of the sides 28a being such that a sphere could be inserted through the diaphragm opening to engage these sides and lie substantially wholly below the plane of the diaphragm opening. The casing 10, as shown in Fig. 5, is shaped such that portions 26 of the flow passage lie outside a line 27 joining the inner edge of the inlet or outlet opening 12 to the seating edge 28 and preferably such that a part 26a of the portions 26 lies outside a cylindrical extension 92 of the opening 12. These portions may be located at the sides, top or bottom of the flow passage. The construction is such that the cross-sectional areas of the flow passage, with the valve open, is at least as great as that of the opening 12.
Patent GB-904530-A (GB)
Title: Improvements in or relating to machines for filling powder into containers
IPC: B65B1/12
Filed: 1959-11-24
Abstract: 904,530. Screw conveyers. JACKSON & CROCKATT Ltd., J. G., and GAIR, D. Nov. 10, 1960 [Nov. 24, 1959], No. 39770/59. Class 78(1). In a machine for filling powder into a container, the powder is discharged through nozzle 17 by worm 13 and passes into detachable nozzle 21 and thence into the container. Worm 13 carries an end-plate 10 so that when the worm is not working powder is prevented from falling into nozzle 21. Nozzle 21 is secured to nozzle 17 by screws 23 which engage flange 24 formed on nozzle 17. The plate 10 alternatively may be secured to nozzle 21.
Patent GB-1200037-A (GB)
Title: Improvements in or relating to drives for pneumatic feed devices
Inventor: JIRUSE JAROSLAV
IPC: B65H5/08
Filed: 1968-08-20
Abstract: 1,200,037. Feeding sheets. ADAMOVSKE STROJIRNY NARODNI PODNIK. 20 Aug., 1968 [21 Aug., 1967], No. 39778/68. Heading B8R. Drive means for sheet separator mechanism comprises a cam-shaft 1, Fig. 1, parallel to the direction of feed and carrying (a) a drum cam 5 for controlling the movement of separator suction cups 13, Figs. 1 and 2, along a path 60, (b) a disc cam 6 for controlling the movement along a path 61 of an element 22 for periodically depressing the stack 59, (c) a cam 7 for controlling through a valve 29 the application of suction to the cups, and (d) a cam 28 for controlling the application of air under pressure to blowing nozzles 58 for riffling the upper part of the stack and to the element 22 for blowing air under the sheet which is being held by the cups. The degree of suction, of air pressure, and of air to the blowers, is controlled by regulators 47, 48, 49.
Patent GB-1216932-A (GB)
Title: Improvements in motor control systems
IPC: H02P7/292
Filed: 1968-08-21
Abstract: 1,216,932. Automatic control systems. GENERAL ELECTRIC CO. Aug.21, 1968 [Oct. 20, 1967], No.39891/68. Heading G3R. [Also in Division H2] In a speed or torque retroactive control system wherein a D. C. motor is fed from a three-phase supply by a plurality of phase-controlled rectifiers, trains of relatively high frequency pulses (e.g. in the range of 5 khz to 20 khz) are used to gate the controlled rectifiers to avoid commutation due to transients in the supply voltage, and initiation of each pulse train terminates a pulse train in a preceding phase. As shown, D. C. signals proportional to the speed of motor 10 are fed from tachometer 82 and compared with command reference signals at 78 and error signals are amplified by amplifier 84, which has an adjustable feedback network 86 for smoothing out high frequency signals (due to transient operating conditions) to stabilize the system. For quick response to required charges a voltage regulator 88 compares the output from 84 with feedback from 90 which is proportional to the voltage across the armature of motor 10, stabilization being provided by a capacitor 98. The control system can reverse motor 10, and has a regenerative braking mode. Firing signal generators 27 and 34 are energized for forward or reverse drive, respectively, via amplifiers 106 and 108 when the error signal input to differential amplifier 100 is positive or negative, respectively. Each generator 27 and 34 comprises three high frequency pulse generators for the three phases of the bridge circuit rectifiers 36 and 38 respectively, but for clarity these are only shown separately for generator 27 and bridge circuit 36. Initiation of firing pulse trains from generators 28, 30, 32 is synchronized with the A. C. supply (from lines 40, 42, 44) by circuits 62, 64, 66, and interconnections 70, 72, 74 ensure that initiation of pulses in generator 28, for example, terminates the pulses from generator 32. Lockout circuits 124 and 126 ensure that the rectifiers for one direction of motor 10 are not fired while current is still flowing in the other rectifiers, and instantaneous current limiting is provided by circuit 110, as in Specification 1, 207, 553. One embodiment of a suitable pulse generator circuit is described Fig.3 (not shown).
Patent GB-1008570-A (GB)
Title: Improvements relating to rotary-piston internal combustion engines
IPC: F02B55/16
Filed: 1964-10-01
Abstract: 1,008,570. Rotary-piston internal combustion engines. DAIMLER-BENZ A.G. Oct. 1, 1964 [Oct. 5, 1963], No. 40063/64. Heading F1F. In a rotary-piston I.C. engine of trochoidal kind having a peripheral housing 1 with bi-arcuate inner profile 2 and a three-sided piston 4 eccentrically mounted for rotation in the direction of the arrow 5 and sliding by means of sealing strips 6 at its corners on the profile 2, the admission and exhaust ports 9, 10 located, in the rotational direction of the piston, beyond and before respectively a zone 8 nearer to the axis of the housing are inclined against the direction of piston rotation to prevent at overlap dead-centre position the flow of exhaust gases from the expansion space into the suction space. At the commencement of the suction stroke, air or air-gas mixture is directed against piston rotation to blanket any exhaust gases tending to enter the suction chamber. At the same time cooling of the piston flank and mixture formation is intensified. The inclination of the exhaust port permits the flow of exhaust gases without deflection losses. The longitudinal axes of the ports 9, 10 are preferably parallel to each other.
Patent GB-1076034-A (GB)
Title: Apparatus for forming gussets in packaging material
IPC: B65B49/08
Filed: 1964-10-05
Abstract: 1,076,034. Wrapping in continuous tubing. SCHWEIZERISCHE INDUSTRIE-GESELLSCHAFT. Oct. 5, 1964 [March 6, 1964], No. 40455/64. Heading B8C. Side gussets (2b) (Fig. 3, not shown) are formed in continuously-moving packaging tubing 2 by folders 10 (Fig. 1) which are moved in closed non-circular paths under the control of fixed cam surfaces 20 so that the folders 10 first move with the web and then in the opposite direction. In the embodiment described the folders 10 comprise wheels 10 free to rotate on levers 11 which are pivoted at 12 to arms 13. Lateral inward movement of the arms 13 is transformed into a curved movement of the levers 11 by rollers 22 which follow cam surfaces 21a on fixed plates 20 until over-centre springs 26 snap the levers 11 over against stops 23 on the arms 13. In the outward lateral movement of the arms 13 the roller 22 follows the cam surface 21b. After the side folds have been made the wrapper is sealed transversely by heaters 5, 6. The heater 5 may be mounted on a shaft 4 carrying a cam surface 18 which reciprocates the bar 13. The wrapper 1 may be made from a single sheet seamed into a tube, and the seam is positioned between the wheels 7 and 8 to ensure correct alignment of the packages in the folding device. Flexible side plates 9 may also assist in this positioning.
Patent GB-1039976-A (GB)
Title: Improvements in or relating to steel rod and wire made therefrom
Inventor: SHIPLEY EDWARD ALBERT
IPC: C22C38/12
Filed: 1962-10-25
Abstract: A patented steel rod, suitable for the production of wire by cold drawing, comprises:- .C.0.25 - 1.2% .Si.0.1 - 0.35% .S.0.05% max .P.0.05% max .Mn.1.5% max .Mo.0.02 - 0.3% the remainder, apart from normal residuals, being iron. Normal residuals for some metals are stated to be:- .Ni.0.4% max .Cr.0.3% max .Sn.0.05% max .and.Cu 0.3% max Patenting is defined as heating the rod to above the Ac3 temperature and cooling in air or a liquid quenching medium (e.g. molten lead or salt mixture) maintained at a specific intermediate temperature, depending on the composition of the steel being processed.
Patent GB-1398104-A (GB)
Title: Photosensitive compositions and elements and their use in preparing coloured images
IPC: G03F7/038
Filed: 1972-09-01
Abstract: 1398104 Photo-resist materials containing U V absorbers and/or brightening agents E I DU PONT DE NEMOURS & CO 1 Sept 1972 [9 June 1972] 40661/72 Heading G2C [Also in Division C3]  A photo-resist material comprises (a) a photopolymerizable or photo-hardenable composition, (b) a photo-initiator or photo-sensitizer therefor which is activated by ultraviolet between 325 and 425 nm and (c) an ultraviolet absorber, the material visually transmitting or reflecting white light but transmitting less than 50% of ultraviolet that it would if (c) were absent. Specified ultraviolet absorbers are 2-hydroxy-4-(hydroxy, n-oetoxy, methoxy or dodecoxy)benzophenone, 2-hydroxy- 4-methoxy-(5-sulpho-or 2'-carboxy)benzophenone, and 2-(2'-hydroxy-5'methoxy-phenyl)-benzotriazole which may be used alone or with an optical brightener. U. V. absorbers which absorb in the visible as well, e.g. 2, 2'-dihydroxy-4- methoxybenzophenone, may be used with an optical brightener e.g. 2-(stilbyl-4")-naphtho-1', 2', 4, 5)-1, 2, 3-triazole-2"-sulphonic acid phenyl ester, 7-(4'-chloro-6'-diethyl amino-1',3',5'- triazine-4'-yl)amino-3-phenylcoumarin or 3, 7-di- (2, 4-dimethoxybenzoylamino)-dibenzothiophenedioxide-2, 8-disodium sulphonate. Colour proofs may be made from the materials using the process of Specification 1256827 but the addition of (c) removes the yellow tint in the colour proofs produced in 1256827.
Patent GB-1159737-A (GB)
Title: A Pin Tumbler Lock Mechanism.
IPC: E05B27/04
Filed: 1967-09-06
Abstract: 1,159,737. Pin tumbler lock mechanisms. VIRO INNOCENTI S.p.A. 6 Sept., 1967 [6 Sept., 1966; 3 May, 1967], No. 40816/67. Heading E2A. A pin tumbler lock mechanism comprises a housing 1, a plug 2 rotatably housed inside the housing, a keyhole in said plug, a number of spring-urged pin tumblers 10 housed inside a corresponding number of aligned bores formed in the cylinder and the plug and positioned so as to coact with depressions formed in at least one edge of a key whereby when the key is inserted into the plug, the pin tumblers are moved so as to permit the plug to be rotated, two additional rows of pin tumblers being provided in the plug and housing .and positioned to coact with corresponding depressions formed in the opposite sides of the key. In the construction described the pin tumblers of the two additional rows are not disposed opposite each other but are axially offset. The axes of the two additional rows either lie in a diametral plane of the plug or in a chordal plane of the plug. The key is made symmetrical about its centre line so that each edge is provided with depressions and there are two rows of recesses in each side this arrangement enabling the key to be inserted into the keyhole either way up. The plug is provided with a cam for actuating a bolt (not shown) and the housing and the plug can be made of sintered metal powder. In a modification also the lock mechanism can be provided with an additional row of pin tumblers engaging depressions in the opposite edge of the key to the pin tumblers 10.
Patent GB-1002830-A (GB)
Title: Instrument supervision
Inventor: TAYLOR DAVID ROBERT DUFF
IPC: G01D5/34
Filed: 1962-10-29
Abstract: 1,002,830. Indicating-apparatus. STANLEY SEALEY INSTRUMENTS Ltd. Jan. 23, 1964 [Oct. 29, 1962], No. 40862/62. Heading G1J. An indicating-instrument has attached to its cover glass a sensing device comprising a photoelectric cell 14 exposed to light reflected from a source 17 by the instrument dial, the cell and source being so located that a change in the illumination of the cell occurs when the indicating pointer reaches or leaves a predetermined position, precautions being taken to avoid interference by changes in the ambient illuminition required for the visual observation of the instrument. This can be done by providing a source 17 of light which can be modulated at a convenient frequency and by including a corresponding filter or tuned amplifier in the output circuit of the cell 14. A suitable source 17 would be a small filament lamp fed with alternating current of low enough frequency to cause a marked ripple or a neon lamp. An alternative is to provide two photo-electric cells connected to produce a balanced condition, both cells being exposed to the ambient light, but at least one also being exposed to light reflected from the dial so that when the pointer approaches or departs from the predetermined position the balance is disturbed. One cell may face towards and the other away from the dial or both may face the dial and a low-frequency filter or tuned amplifier may be included in their output circuit. A cylindrical lens 13 may be provided to concentrate light from the lamp 17 on the dial and reflected light from the dial on the cell or cells. The casing 11 may be of polymethylmethacrylate, polyvinylchloride or epoxy resin and it may have a metal casing to screen it from electrical interference, the cable 19 being screened by sleeve 18.
Patent GB-921242-A (GB)
Title: Improvements in or relating to vending mechanisms
Inventor: SILVER DENNIS STANLEY
IPC: G07F5/18
Filed: 1959-11-25
Abstract: 921,242. Keyboard switches. FARROW & JACKSON Ltd. Feb. 9, 1961 [Dec. 2, 1959], No. 41027/59. Class 38 (5). [Also in Group XVIII] Switches for controlling the delivery of different articles in a coin-freed vending machine are operated by rods 15 moved by pressing in selector knobs 10 and the knobs are carried by slidable selectors 9 which have grooves 22 and cam surfaces 21 arranged in staggered formation so that, whichever knob is pressed, the corresponding cam surface 21 engages a pin 16a on a rod 15 and raises the rod so that other pins 16 engage in the grooves 22 of the remaining selectors 9 and prevent them from being operated. When a coin is inserted, electromagnets 5 are energized and the armature of the appropriate electromagnet will engage behind a collar 14 on the operated selector 9 and hold it in operated position. If the article source corresponding to a particular selector becomes empty, a switch is opened to prevent the corresponding electromagnet 5 becoming energized, so that the selector is not held in position when pressure on the knob is released.
Patent GB-950679-A (GB)
Title: Improvements in or relating to combined television and sound systems
Inventor: BRINKLEY JOHN RAYMOND
IPC: H04N7/06
Filed: 1961-11-17
Abstract: 950,679. Multiplex pulse signalling. PYE Ltd. Nov. 13, 1962 [Nov. 17, 1961], No. 41166/61. Drawings to Specification. Heading H4L. In a television transmission system in which the sound and video signals are transmitted on carrier waves of closely adjacent frequencies, an additional sound channel is provided on the video carrier by sound modulated pulses occurring during the times when the video signal is interrupted. The two sound channels are arranged to be of comparable bandwidth and one may provide, for example, speech in a foreign language, the receiver being provided with switching to receive either one of the speech channels. Alternatively, both sound channels may be associated with the television programme and may feed respective sound reproducers. The apparatus for selecting the additional channel may be in the form of an adapter for connection to a conventional television receiver. The pulses may be modulated in amplitude, phase, frequency or duration in known manner to avoid interference with synchronization. Specifications 434,882, 434,890, 564,511, 621,479 and 621,494 are referred to.
Patent GB-1202930-A (GB)
Title: Plate electrode assembly for electrostatic precipitator
IPC: B03C3/53
Filed: 1967-09-08
Abstract: 1,202,930. Electrostatic precipitators. AMERICAN AIR FILTER CO. Inc. 8 Sept., 1967 [8 Sept., 1966], No. 41250/67. Heading B2J. An electrode assembly 2, Fig. 1, comprises plates 4, 5 spaced bars 11, 11' extending through openings 8 in the plates, the bars having transverse slots 13, 13', Fig. 3, corresponding to the spacing and permitting engagement of the plates. In assembly, the spacer bars 11, 11' are rotated, after engagement with the plates so that the sides of the slots 13, 13' engage with ribs 16, 16', Fig. 5, integral with the plates to hold the plates in firm contacting relationship with the bars. The outermost bars 11' are hollow to include fluid feed passages 21, Fig. 4, connected to a manifold 27 communicating with angled orifices 22. One end of each bar 11' is sealed with a screwed plug. The fluid may enhance the dust trapping characteristics or be used for washing the plates. The charged plates 4 are supported by insulated end plates 3 and the earthed plates 5 are supported by end plates 6 secured to the precipitator housing.
Patent GB-1137042-A (GB)
Title: Motor vehicle steering gear
Inventor: ISSIGONIS ALEXANDER ARNOLD
IPC: B62D1/16
Filed: 1966-09-15
Abstract: 1,137,042. Steering mechanism; preventing theft. BRITISH MOTOR CORP. Ltd. 27 Oct., 1967 [15 Sept., 1966], No. 41262/66. Headings B7H and B7J. In steering mechanism for a motor vehicle, the steering wheel 1 is mounted at the free extremity of a cantilever beam 2 overlying the driving position transversely and constituting one limb of an angular structure 3 of which the other limb 4 is mounted centrally of the driving compartment in a manner permitting pivotal movement about an axis at or near its base and transverse of the vehicle, the angular structure 3 including means for transmitting to the region of its base rotary movements of the steering wheel 1. The angular structure 3 is of boxsection fabricated from sheet metal and is mounted in trunnions 5. The steering wheel shaft 6 carries a sprocket 7 connected by a chain 8 to a sprocket 10 which is coupled through universal joints 11, 12 and a sliding joint 13 to rack-and-pinion steering gear 14. Pivoting of the structure 3 in the trunnions 5 is controlled by frictional loading or by a spring-loaded detent permitting step-wise adjustment of the steering wheel position. Instruments, switches and gear lever may be carried by the structure 3. To prevent theft of the vehicle the steering wheel shaft 6 may be lockable, or the angular structure 3 may be lockable in a position wherein the steering wheel 1 prevents occupation of the driving seat.