baber/WOPTO huggingface dataset:
Patent GB-1190206-A (GB)
Title: Improvements in or relating to Flexible Skirt Assemblies for Air Cushion Vehicles
Inventor: CREWE PETER ROWLAND
IPC: B60V1/00
Filed: 1967-06-22
Abstract: 1,190,206. Air cushion vehicles. BRITISH HOVERCRAFT CORP Ltd. 10 May, 1968 [22 June, 1967], No. 28955/67. Heading B7K. In a plenum chamber air cushion vehicle wherein the cushion is enclosed by a flexible skirt composed of an upper inflatable chamber extended downwardly by contiguous looped finger elements vibrations in the skirt assembly are reduced and good over-wave performance and stability is ensured by inflating the upper chamber to a pressure between 1À15 and 5 times the cushion pressure. Additionally, when the chamber is formed by an inflatable looped skirt the distance between the fixing points of the loop to the body must be greater than 0À9 times the vertical distance between the underside of the rigid structure and the lower tip of the skirt assembly. The vehicle has a rigid structure 2 to which is attached along the bow and sides an inflatable bag skirt 1 with depending finger elements 3 contiguously arranged along its lower surface, the portion 1 being sub-divided along its length into compartments 7 by partitions 6. Whereas the attachment points 4, 5 of portion 1 are at a fixed spacing, the pressure in the bag is made variable by connecting each compartment 7 to a variable volume accumulator 8. Each compartment 7, or combination of compartments, and its associated accumulator 8 is supplied with pressure air from a source of supply separate from that which supplies the cushion 12 so that the ratio between the chamber pressure and cushion pressure is maintained at the specified ratio by control means, not shown, An effect of variation of the pressure in the compartments 7 is to vary the area of the cushion 12. The rear end of the cushion is closed by a bag-skirt 14 or other closure means and when it is desired to operate the vehicle as a displacement vessel the bow skirt and the skirt 14 are retracted and the side compartments are inflated to a relatively high pressure to act as catamaran floats.
Patent GB-1215660-A (GB)
Title: Improved apparatus for sensing a moving record medium
IPC: G06K7/016
Filed: 1969-06-09
Abstract: 1,215,660. Tape readers. NATIONAL CASH REGISTER CO. 9 June, 1969 [27 June, 1968], No. 29056/69. Headings G4C and G4M. A record medium such as punched or magnetic tape has regularly spaced timing marks, e.g. sprocket holes, which are sensed to generate clock signals for sampling the sensed data signals, and the timing marks are also sensed prior to their sensing by the clock generator to produce an error signal upon failure to detect a timing mark at one of the timing mark locations. Sprocket holes 28, Fig. 2, are sensed by a pair of photo-detectors 40, 42, Fig. 1, associated with apertures 34, 36 in a block over which the tape passes in the direction of the arrow, apertures 34, 36 being spaced by more than the distance between adjacent sprocket holes 28. The outputs A, B from detectors 40, 42 are gated together at 52 to produce clock pulses K during their periods of overlap. A further detector 44 associated with an aperture 38 which is spaced from aperture 36 by less than the sprocket hole spacing provides an inverted output F which is gated at 56 with the clock pulses, gate 56 being enabled by strobe pulses S 1  to produce an output G if no sprocket hole 28 is detected by 44 at the time of production of a clock pulse K. A bi-stable 62 may be set to stop sensing.
Patent GB-1475519-A (GB)
Title: Arrangement for the simulated testing of high voltage direct current switches
IPC: G01R31/327
Filed: 1974-07-01
Abstract: 1475519 Testing switches D KIND 1 July 1974 [19 July 1973] 29106/74 Heading G1U A D.C. switch S, Fig. 1, is tested by connecting it in the circuit shown in which inductance L2 is made equal to the inductance of the network that the switch S would have to break when in use, and performing the following operation:- (a) first a switch HS 1  (which could be a controlled rectifier) is closed thereby connecting a high current low voltage source U 1  across the switch, (b) when the current is, Fig. 2, through the switch has reached a pre-set value, at a time t 1 , the switch S is opened, (c) the voltage U s  across the switch then rises and the current is falls, and at a suitable time t2 before the current is is zero a second switch HS 2  is closed thereby connecting a high voltage source U2 across the now open switch S, (the source U 2  is not loaded by source U 2  because of the diode nature of switch HS 1 ), (d) the voltage across the switch then rises rapidly, being in effect the sum of the reverse voltage across the inductance L 2  and the source U2, and the circuit is allowed to come to a stable condition with is zero and the voltage U s  equal to the source V 2 . The time t2 is so chosen that switching in the high voltage source U2 does not cause the current is to depart from its exponential decay.
Patent GB-932110-A (GB)
Title: Improvements in or relating to sample-conveyors for radio-activity investigations
IPC: G01T7/08
Filed: 1959-08-26
Abstract: 932,110. Handling radio-active material. PHILIPS' GLOEILAMPENFABRIEKEN N.V. Aug. 26, 1959 [Aug. 29, 1958], No. 29192/59. Class 39 (4). A conveyer for bringing radio-active samples in succession to a radiation counter comprises a chain 1 driven by teeth 2 on gear-wheels 3, 4, 5 rotating about vertical axes. A motor 7 drives a gear-wheel 4a coaxially secured to the wheel 4, teeth 8 on the wheel 4a meshing with teeth 9, 10 on gear-wheels 3a, 5a coaxially secured to the wheels 3, 5. Further toothed wheels 11, 12 guide the chain 1. The motor 7 drives the chain in step-wise motion through a chamber 15 in front of a shielding chamber 16 having a radiation counter 20. Sample cups 17 are carried at equal intervals on the chain and rest in shallow depressions on its upper side. As each cup 17 arrives at the front of the chamber 16 the chain stops and a rectilinearly-guided forked member 18 moves forward to lift the cup from the chain and slide it into the chamber. At the same time two resilient members 18a projecting from the member 18 engage two apertures 19a in a slidable member 19 whereby the member 19 is pushed backwards in the chamber 16. When the sample cup 17 has remained beneath the counter 20 for a predetermined time the member 18 is retracted and taken with it the member 19, the latter returning the cup to the chain. Further movement of the member 19 is prevented by stops 16a so that as the member 18 continues its movement it becomes uncoupled from the member 19 by the disengagement of the members 18a from the apertures 19a. The chain 1 is now driven a further step and the cycle repeats. In modifications (Figs. 4-7, not shown), pairs of chains driven in synchronism and arranged side-by-side or one above the other are employed.
Patent GB-306196-A (GB)
Title: Improvements in and relating to springs for vehicles
IPC: B60G11/113
Filed: 1928-08-02
Abstract: 306,196. McCulloch, J. C. Aug. 2, 1928. Axle attachments.- Laminated springs are secured to the axles of motor vehicles by means which allow slight relative tilting when one end of the axle rises or falls. The spring 2 rests upon the axle, but is not clamped directly thereto, being secured by U-bolts 3 to brackets 4 having a pivotal connection, bv means of the loosely fitted bolts 5, to a cross member 6 clamped below the axle by bolts 7 with wedge-shaped heads.
Patent GB-799399-A (GB)
Title: Improvements in window guides
IPC: B60J10/04
Filed: 1955-10-13
Abstract: 799,399. Frames for vehicle windows. BRIGHT, T. J. R. Oct. 26, 1956 [Oct. 13, 1955], No. 29222/55. Class 20(3) A channel-shaped guide rail for a vehicle window is formed from a blank, e.g. of sheet metal 1, having side slots 2 which are opposite one another, as shown, or alternatively staggered, and a number of pressed out corrugated tongues 3 for securing the guide, e.g. to a support flange 4. A series of tangs 7 pressed out from the centre part of the rail, or alternatively from the tongues 3, frictionally engage the flange 4. The tangs 7 may be replaced by a number of V-shaped, or arcuate, depressions. The blank is embedded in rubber, or plastic, 8 having a soft inner lining 9 which is also folded over the upper edges of the channel sides. In a modification, the soft lining 9, applied directly to the interior of the channel, is gripped by outwardly folded over portions on the upper edges of the channel. In a further modification, Fig. 10, the channel is formed of steel wire, the tongue portions 3 formed, during the course of manufacture with tangs 7, being bent down, at spaced intervals. The support flanges 4, Fig. 11, are resiliently mounted to a fixed part 13 of the vehicle, a number of pins 12, each with a spring 14, and secured to the flange 4, slidingly engaging corresponding openings in the part 13. In the embodiment shown in Fig. 6 one of the sides of the rail is folded over outwardly to form engagement tongues 3.
Patent GB-983329-A (GB)
Title: Improvements in or relating to timing devices for fuel injection pumps
IPC: F02M41/12
Filed: 1962-07-30
Abstract: 983,329. Fuel injection pumps. AMERICAN BOSCH ARMA CORPORATION. July 30, 1962 [Sept. 11, 1961], No. 29245/62. Heading F1A. [Also in Divisions F2 and G3] In a fuel injection pump comprising a reciprocating and revolving piston 20, Fig. 1, actuated by an engine-driven cam shaft 11, means for automatically varying injection timing relative to engine speed comprise a helically splined sleeve 44, Fig. 2, engaging corresponding splines on cam 31 and shaft 11. Sleeve 44 is movable axially, against a spring, by hydraulic pressure, e.g. from the engine lubricating system, controlled by a slide valve 50a, Fig. 3, movable against springs 57a, 58 by centrifugal weights 56. Increasing engine speed causes weights 56 to move valve 50a to the right to connect pressure to the right-hand end of sleeve 44. Sleeve 44 is coupled to spring abutment shaft 49 through pin 50 and in moving to the left compresses springs 57a, 58, thereby tending to move valve 50a to its original position. On decrease in engine speed, springs 57a, 58 move valve 50a to the left to connect sleeve 44 to exhaust. Sleeve 44 then moves to the right under spring action and torque reaction. The delivery per stroke of the pump is controlled by a sleeve 30 controlling a quill port 29 in piston 20. Sleeve 30 is adjusted in accordance with engine speed by the action of centrifugal weights 39 driven through gears 34, 35 by cam shaft 11. A feed pump 24 supplies fuel to the injection pump. U.S.A. Specification 2,965,087 is referred to.
Patent GB-855902-A (GB)
Title: Improvements in or relating to automatic contrast control in television receivers
IPC: H04N5/57
Filed: 1959-08-27
Abstract: 855,902. Automatic gain control arrangements. BLAUPUNKT-WERKE G.m.b.H. Aug. 27, 1959 [Sept. 3, 1958], No. 29283/59. Class 40(5). In a television automatic gain control circuit of the "keyed" type, in which differentiated line flyback pulses are applied to the anode of a grid controlled rectifier 1 the grid of which is driven with the video signal from the anode of video output stage 12, grid current is prevented by means of a diode 3. The automatic gain control voltage is obtained across a resistor 9 in the anode circuit of the rectifier 1. The cathode of the rectifier 1 is given a positive bias by means of potentiometer 16, 17 connected across the positive supply and the grid is biased by means of resistor 4 connected to a tapping point on resistor 16: if the potential of point 11 rises above that of the tapping point, diode 3 becomes non-conductive, so preventing grid current in the rectifier 1. In a modification, Fig 2 (not shown) the video waveform is applied to the cathode of the gridcontrolled rectifier and the delay bias to the grid, via a diode similarly poled so as to prevent grid current.
Patent GB-815259-A (GB)
Title: Ampoule and method of its manufacture
IPC: C03B23/18
Filed: 1956-09-25
Abstract: 815,259. Ampoules. CORNING GLASS WORKS. Sept. 25, 1956 [Sept. 29, 1955], No. 29286/56. Class 81 (1). [Also in Group XXIII] A breakage line is provided on an ampoule 10, Fig. 3, by heat-softening it in the desired region, mechanically nicking it, as by a grooving wheel, to give a groove in region 15, applying pressure to thicken the glass in, or first polishing, the groove region and thereafter abrading the groove region, as by abrasive-blasting, to give the breakage line 15. The abrasive may be aluminium oxide of a mean particle size of 27 microns and the air pressure 55-75 lbs. sq. in. The groove region is thus characterized by a network of small surface flaws of random orientation to give a substantially uniform breaking value, no matter where the breaking force applied. A coating film, as of regenerated cellulose, may be applied to the neck 16 as a thumb protective measure.
Patent GB-958503-A (GB)
Title: Reusable tamper-indicating container closure
IPC: B65D83/14
Filed: 1960-08-24
Abstract: 958,503. Container closures. DEVELOPMENT RESEARCH Inc. Aug. 24, 1960 [Aug. 24, 1959], No. 29299/60. Heading B8T. A tamper proof closure is formed with a lever 31 integral with an inwardly projecting latching tooth 28 provided on the closure rim and engaging beneath a ledge 19 on the container. Pressure on the lever fractures the closure along a weakened area 37 extending round the base of the lever but stopping short of the lower edge of the closure so as to form retention portions holding the tooth in place on the closure so that the closure may be reapplied to the container. The closure is of inverted cup-shape and formed of polyethylene. Specification 724,585 is referred to.
Patent GB-1277233-A (GB)
Title: Electrophotography
IPC: G03G15/16
Filed: 1969-06-10
Abstract: 1277233 Multi-colour electro-photographic apparatus CANON K K 10 June 1969 [12 June 1968] 29361/69 Heading G2H An electro-photographic apparatus for reproducing multi-colour originals has an electrophotographic drum 13 which is exposed to an original 16 to form a latent image of a selected colour content of an original, developing apparatus for developing the latent image with a corresponding coloured developer i.e. the same colour or a complementary colour, means for transferring the developed image to an intermediate member 26, means for causing these steps to be repeated for other colours of the original and transfer means for transferring the composite coloured image from the member 26 to an image member 30. The drum 13 has a substrate 1, a photoconductive layer 2 and an insulating layer 3 laminated one upon another. In another embodiment of image member Fig. 2 (not shown) insulating layer (3) and (3)<SP>1</SP> are formed on either side of a photo-conductive layer (2). The substrate 1 may be a metal such as copper, tin, or aluminium or paper with an aluminium coating. The insulating layer may be organic high molecular compounds, e.g. fluororesins, polycarbonate resins or polyethylene or inorganic compounds, e.g., Al 2 O 3 , Si O 2  Ti O 2  or BN. A corona charger 14 uniformly charges the insulating layer 3 before exposure to the original 16 through a filter 20 e. g. a blue filter. A second corona charger 15, which may be an A.C. charger, charges the layer with an opposite polarity during exposure. The image area is then uniformly illuminated by a lamp 21 to increase contrast. The latent image is then developed with yellow toner and transferred to drum 26. The residual image is removed from the drum 26 and the process is repeated using a red filter and cyan toner, and than a green filter and magenta toner. The composite image on the drum 26 is then transferred by a pressure roller 32, to member 30 which may be of fabric. The developers may be dry, e.g., a cyan toner may include polystyrene and an oil soluble metal complex dye such as "Orasol" (Trade Mark) Brilliant Blue or polystyrene and an acid dyestuff such as Kayacyl (Trade Mark) Blue, magenta toner containing polystyrene and Kayanol milling Red; and yellow toner containing polystyrene and Kayacyl Yellow. Liquid developer may contain linseed oil and lead chromate dispersed in an insulating liquid, such as a pentane or carbon tetrachloride, Isopar H (Trade Mark) or linseed oil and cadmium selenate dispersed in n-pentane, or linseed oil and phthalocyanine blue dispersed in n-pentane. Specifications 1165405 to 1165410 are referred to.
Patent GB-191879-A (GB)
Title: Improvements in or relating to adjustable electrical resistance devices
IPC: H01C10/36
Filed: 1921-11-04
Abstract: 191,879. Graham, E. A. Nov. 4, 1921. Regularing - switches. -A resistance coil b is wound in helical grooves a<3> on an insulating body a and has each end and one or more tappings connected to contacts d, d<1>, d<2>. A spindle f car. ries a contact bridge e that bears on the contacts d &c., and on another contact c which forms one terminal of the switch, the other terminal being connected to the contact d<2>. Such a switch may be used for dimming motor-vehicle headlights.
Patent GB-1499830-A (GB)
Title: Fuel metering devices for gas turbine engines
IPC: F02C9/26
Filed: 1975-05-13
Abstract: 1499830 Gas turbine engine fuel systems LUCAS INDUSTRIES Ltd 13 May 1975 [3 July 1974] 29405/74 Heading F1G A fuel metering device for a gas turbine engine comprises a valve having a hollow control member 16 within a sleeve 13, the fuel flowing from the inside of the control member via a triangular port 19 therein and a triangular port 15 in the sleeve, the control member being movable axially and rotationally in response to engine operating variables. The axial movement is effected in accordance with the engine compressor inlet pressure P 1  by an evacuated bellows 21, while the rotational movement is effected via a gear-box 25 and a pinion 26 and quadrant 27 by a stepping motor 22 controlled by an electrical circuit 23 in accordance with the relationship between the actual engine speed N and the desired engine speed represented by the setting # of a speed selector lever 24, feedback to the circuit 23 being effected by a position transducer 28. The pressure drop across the metering orifice 15, 19 is maintained constant by a spill valve 31 connected between the outlet and inlet of the fuel pump 11 and responsive to the pressure drop.
Patent GB-1175226-A (GB)
Title: Improvements in Injectors, Tuyeres, Burners and like High Temperature Devices for Use in Metallurgical Processes.
IPC: C21C5/34
Filed: 1967-06-26
Abstract: 1,175,226. Furnace tuyeres. L'AIR LIQUIDE SOC ANON POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE. 26 June, 1967 [27 June, 1966], No. 29470/67. Addition to 1,046,864. Heading F4B. In the injector, tuyere, or submerged burner of the parent Specification, the or each injection duct is constituted by a porous, fluid permeable, refractory block 4 rendered fluid-tight laterally by a metallic jacket 8. As shown, two concentric fluid permeable refractory blocks 4, 12 of, e.g. magnesia, chromite, or alumina are separated by a metal jacket 8, of e.g. Fe, Cu, Ni, or a nickel alloy. Fluid connections are by pipes 6 and 14 to the two blocks. In a modification (Figs. 2 and 3) four circumferentially spaced metal ducts filled with porous refractory material are mounted in a refractory block with a central supply pipe.
Patent GB-472013-A (GB)
Title: Improvements in and relating to apparatus for taking and/or projecting continuously moving kinematographic films
IPC: G03B41/08
Filed: 1936-10-29
Abstract: 472,013. Kinematographic apparatus. PINTSCH AKT.-GES., J. Oct. 29, 1936, No. 29475. Convention date, Oct. 31, 1935. [Class 97 (i)] Optical compensation for a continuously moving film is effected by a rotating regular polyhedral prism having a thickness s satisfying approximately the equation s =uz/2#-b/n-1 where n is the distance in centimetres between consecutive picture frames, z is the number of faces of the prism and u the refractive index of the prism. The film 11 is illuminated by parallel light from a source 9 and condenser 10, compensation being effected by the prism 12. The source 9 may be displaced from the axis of the condenser to illuminate the film by reflection. The prism 12 and the sprocket for the film 11 may be on the same shaft 13, the film either being deflected by rollers or the light beam may be reflected by prisms to pass through the prism 11 after passage through the film. To minimize the errors in compensation which occur when a corner of the prism passes the film the light from the lamp 9 may be reduced in intensity at that time by a suitable electrical mechanism and, in photographing, the light illuminating the object may be reduced in intensity at the moments of inexact compensation. Alternatively a screen may rotate in front of the lamp to shut-off the light when compensation is inexact or the corners of the prism 12, Fig. 5, may be ground plane at 20, 21 .. and blackened.
Patent GB-1121046-A (GB)
Title: Improvements in the manufacture of glass fibres
IPC: C03C25/68
Filed: 1966-07-01
Abstract: The divalent and trivalent metal oxides of the glass fibre composition according to the parent Specification 976,565, and their proportions are Al2O3 0.5-5 (preferably 0.5-2)%, Bi2O3 0.2-2 (0.5-1) %, CoO 0.5-5 (2-5) %, Cr2O3 0.1-3 (1.25-2.75) %, MgO 0.5-3 (0.5-2.5) %, Mn2O3 0.2-2.25 (0.5-2)%, NiO 0.5-1.25 (0.5-1)%, PbO 0.2-1.5 (0.5-1.5)%, with the result that the fibres after lixiviation contain Al2O3 0.2-1 (0.2-0.75)%, Bi2O3 0.2-3 (0.5-1.5)%, CoO 0.5-8 (3-8)%, Cr2O3 0.1-5 (1.5-4)%, MgO 0.2-3 (0.2-2.5)%, Mn2O3 0.2-3.25 (0.2-2.75)%, NiO 0.5-2 (0.5-1.5), % PbO 0.1-2.25 (0.5-2)%.  Examples of initial and final compositions are given.
Patent GB-1479298-A (GB)
Title: Optical communication system
IPC: H04B10/00
Filed: 1974-07-04
Abstract: 1479298 Optical communication system CORNING GLASS WORKS 4 July 1974 [5 July 1973 (2)] 29653/74 Heading G1A [Also in Division G2] An optical communication system comprises a plurality of transmission lines each connected at one end to a corresponding one of an equal number of stations and at the other end to a common passive coupler, which receives from any said transmission line, signals, of which it transfers a portion to the rest of the transmission lines. Each station has a source and a detector connected via bundles of optical light fibres and a mixer rod to its transmission line. The passive coupler of Fig. 4 comprises a cylindrical transparent mixer rod 61 clad with layer 62 of lower refractive index and reflective coating 65 and with its end-faces, 63, 64, polished and perpendicular to its axis. Support means 67 positions a bundle 66 of transmission lines parallel to this axis with their ends separated from face 64 only by fluid 68 which equals the refractive indices of 61 and 66 or matches them if they are unequal. The numerical aperture of rod 61 at least equals that of a line of 66. So that light from any line of 66, of acceptance half angle # c  when connected, is reflected to any other line 66, the length L m  of rod 61 of diameter d is given by The passive coupler of Fig. 5 in housing 65 has mixer rods 72-77 inter-connected by optical waveguides 88 and receiving transmission lines 81-86.
Patent GB-945194-A (GB)
Title: Improvements in or relating to means for measuring the rate of flow or dispensation of liquids
Inventor: COULTHARD WILLIAM
IPC: G01F1/22
Filed: 1961-08-17
Abstract: 945,194. Flow indicators. WILLIAM COULTHARD & CO. Ltd. Jan. 15,1962 tAug. 17, 1961], No. 29660/61. Audition to 900, 006. Heading G1R. This patent of addition in which the indicator of the flow measuring device of the parent Specification, which indicates or measures flow by means of a ball float or other device which is adjusted by changes in rate of flow, is provided with a port for connecting the device to the suction side of mechanical lubricator or other pump. The indicator in question has a visible drip indicator in series with a ball and tapered tube indicator all arranged in a translucent block 7. A vent plug 6 at the upper end of the tapered bore 2 allows for insertion of the ball 8. The passage 9 at the lower part of the vacuum chamber 5 of the drip indicator connects with the inlet port of a pump. In a drawing accompanying the Complete Specification (not shown) the ball chamber is arranged beside the drip indication.