baber/WOPTO huggingface dataset:
Patent GB-628505-A (GB)
Title: Improvements relating to electronic time switching apparatus
IPC: B23K11/24
Filed: 1947-04-23
Abstract: 628,505. Switching systems for consuming devices. HIRST ELECTRONIC DEVELOPMENT, Ltd., and BRAMSON, S. M. April 23, 1947, No. 10856. [Class 38 (iv)] A load is connected across an A.C. supply for a period of not more than half a cycle by time switching apparatus comprising an igniter controlled mercury pool rectifier in series with the load and a cold-cathode tube arranged to control the discharge of a condenser through the igniter gap to cause the rectifier to operate for the remainder of the half cycle. Peaked triggering impulses are applied to the cold cathode tube from a circuit comprising a gas-discharge diode in series with a condenser and resistor. As shown, the cold cathode tube F fires on the first or second impulse following the closing of contacts S<SP>1</SP> and causes tube E to fire allowing condenser D previously charged from a battery or rectifier T to discharge through the two tubes and the gap of rectifier C, whereupon a pulse of current passes through transformer B and load A, the rectifier becoming non-conducting at the end of the positive half cycle. Closing of contacts S1 by relay S also opened contacts S2 so that the condenser is disconnected from source T, hence the rectifier ignites only once for each relay operation. The duration of the load energization is altered by varying the phase relationship between the triggering of tube F and the supply to the rectifier by means of condenser M<SP>1</SP> and resistor M<SP>2</SP>, while the phase of the triggering signals may be shifted by a bridge circuit, including resistors N<SP>1</SP>, N<SP>2</SP> and condenser N<SP>3</SP>, N‹ connected to a transformer P, as shown and a peaking circuit including a diode or neon tube Q, condenser Ql and resistor Q<SP>2</SP>.
Patent GB-1513852-A (GB)
Title: Hydrogenation of olefine polymers
IPC: C08F8/04
Filed: 1977-03-15
Abstract: 1513852 Hydrogenating butene oligomers LABOFINA SA 15 March 1977 [16 March 1976] 10909/77 Heading C5E [Also in Division C3] A process for hydrogenating a polymer of an olefine having 4 carbon atons comprises hydrogenating the polymers in the presence of a catalyst comprising palladium on an alumina support having a total pore volume of at least 0À25 ml/g, 35 to 50% of the total pore volume being distributed around a mean size lower than 300  50 and 25 to 35% of the total pore volume being distributed around a mean size higher than 300  50, this latter mean size being at least 1À5 times the former, at a temperature between 130 and 250 C., the hydrogenation being performed at a pressure of between 20 and 120 kg/cm<SP>2</SP>, at a liquid hourly space velocity of between 0À25 and 4 hr<SP>-1</SP> and using a hydrogen:polymer ratio of between 250 and 6000 Nl/l, the obtained hydrogenated product having an iodine value #0À26. The polymer may be a butene polymer, an isobutene polymer or a copolymer of butene and isobutene and may have a m.wt. of 300-2000.
Patent GB-109496-A (GB)
IPC: B64D17/00
Abstract: 109,496. Longmore, A. E., and Trussler, F. Sept. 23, 1216. Parachutes. - A parachute normally carried on an aviator's hack or by the top plane of an aeroplane comprises two layers of fabric forming a gas container which is adapted to be expanded by gas from a compressed gas cylinder or generator. Fig. 2 shows a crosssection of the parachute consisting of two layers of balloon silk a<1>, a<2> forming a chamber a which communicates, through a non-return valve and tube f, with a source of supply of carbon dioxide, oxygen, hydrogen, or coal gas. The folded parachute may be carried in a light cover or fastening adapted to be burst by the expanding gas-chamber. A passage m is provided at the centre of the parachute.
Patent GB-925863-A (GB)
Title: Improvements in or relating to nuclear fuel elements
Inventor: FLETCHER FREDERICK OWEN
IPC: G21C3/14
Filed: 1961-03-24
Abstract: 925,863. Nuclear fuel elements. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. March 8, 1962 [March 24, 1961], No. 10974/61. Class 39 (4). In a nuclear fuel element comprising fissile material 2 contained in a tubular sheath 3 which is closed by end caps 4, 5, sealed to the sheath by edge-welds 6, 7, shrouds 8, 9 which enclose the edge-welds 6, 7 are sealed to the sheath 3 by circumferential edge-welds 14, 15, the sheath 3 and the shrouds 8, 9 having circumferential ridges 16, 17, 18, 19 projecting radially by at least the amount of projection of the circumferential edge-welds 14, 15. The ridges 16, 17, 18, 19 thus protect the edgewelds 14, 15 during the loading of the fuel element into a reactor fuel channel. The end caps 4, 5 are screwed into the sheath and the shrouds 8, 9 into the end caps 4, 5 before sealing the screw threads relieving the edgewelds 6 7 and 14, 15 of strains caused by expansion of the rod 2. The ends of the rod 2 are spaced from the end caps 4, 5 by heatinsulating discs 34, 35 of alumina. The shroud 8 has a cup-like recess 20 and the shroud 9 a complementary cone-like projection 21 to allow a column of fuel elements to be end stacked one upon another in a reactor fuel channel. The fuel element is handled by its upper end and the shroud 8 is provided with an annular projection 38 for engagement by a grab. In a modification (Fig. 2, not shown), the shrouds have screw-threaded sockets which accommodate screw-threaded plugs of fuel element end terminations, one end termination having a cup-like recess and the other a complementary cone-like projection. The upper end termination has a flanged portion for engagement by a grab. The space available for the claws of the grab is less than that available in the fuel element of Fig. 1, but this can be overcome by using a suitably designed grab. Specification 790,389 is referred to.
Patent GB-801185-A (GB)
Title: Improvements in and relating to cathodes of thermionic valves
Inventor: GENTRY CHARLES HAROLD RAYMOND
IPC: H01J1/14
Filed: 1955-04-18
Abstract: The cathode of a battery valve comprises a filamentary core and an alkaline earth emissive coating, the core being an alloy consisting of 10 to 40 per cent by weight of Mo, 0.1 to 2 per cent Al, and the remainder Ni and/or Co.  Preferably the Mo is about 20 per cent and the Al between 0.8 and 1.2 per cent.
Patent GB-1280596-A (GB)
Title: Fluid pad bearings
Inventor: DEE COLIN WILLIAM
IPC: F16C32/06
Filed: 1970-03-09
Abstract: 1280596 Fluid bearing AEROSTATIC Ltd 19 April 1971 [9 March 1970] 11130/70 Heading F2A A fluid bearing has at least three pads 2 disposed circumferentially in a housing 1 each pad being pivotable about an axis parallel to the bearing axis and being resiliently loaded inwardly with respect to the housing. A plurality of circumferentially spaced fluid intake slots 19 are provided opening on to the bearing surfaces of the pads, the slots having a greater crosssectional dimension in the axial direction than in the circumferential direction. The pads are loaded by closed loops 4 of resilient material located in the outer surface of the pads. The slots may either be provided in the pads, or the abutting ends of the pads so shaped that the gaps between the slots constitute the slots. Each pad is provided with an abutment 14 so that it may pivot as a two-arm lever and the bearing surface of each pad is recessed 15 on the arm upstream of the abutment when considered in the direction of relative rotation of the shaft supported in the bearing, so as to provide a hydrodynamic bearing film. The housing is provided with a duct 9 through which pressurized fluid may be introduced which is fed via the slots to the bearing surfaces of the pads so that the bearing may operate as a hydrostatic bearing. The pads are made of silicon nitride.
Patent GB-1411846-A (GB)
Title: Electronically switched field sequential colour television
IPC: G02F1/055
Filed: 1973-03-07
Abstract: 1411846 Television; light modulation HUGHES AIRCRAFT CO 7 March 1973 [8 March 1972] 11184/73 Heading H4F A field sequential colour television display includes a ferro-electric electro-optic filter 32 positioned between crossed polarizers 30, 34 and adjacent the screen of a monochrome CRT receiving field sequential colour video signals, and being controlled by voltage pulses from source 36 so that its spectral transmission characteristic varies in synchronism with the received field sequential colour signals, e.g. so that red, green and blue wavelengths are predominantly transmitted thereby field sequentially. The ferro-electric material of the filter specifically comprises a PZT or PLZT ceramic wafer with an interdigital electrode structure on one side thereof (Fig. 3, not shown) to which the field sequential control pulses are applied. Interlaced scanning may be used and the filter area may be divided into four sections to which the control pulses are applied in sequence (Figs. 9 and 10, not shown).
Patent GB-1529472-A (GB)
Title: Measurement of non-linear distortion in signal transmission circuits
IPC: G01R23/20
Filed: 1976-10-05
Abstract: 1529472 Frequency analysis BRITISH BROADCASTING CORP 5 Oct 1976 [8 Oct 1975] 11221/78 Divided out of 1529471 Heading G1U The description is identical to that in Specification 1529471, but the claims relate to the signal analyzer including two series-connected comb filters.
Patent GB-887398-A (GB)
Title: Production of polymeric vinyl compounds
IPC: C08F2/00
Filed: 1960-03-30
Abstract: Vinyl chloride or acetate is polymerized in solution in a mixture of water and methanol or ethanol using an alkyl boron catalyst, the mixture being a solvent for the monomer but not for the polymer which precipitates therefrom.  For vinyl acetate the preferred mixture consists of equal volumes of water and alcohol and for vinyl chloride the preferred mixture is one volume of water with one to four volumes of alcohol.  The preferred catalysts are the tri-C1-4 alkyl borons. In Examples (1) vinyl acetate is polymerized under nitrogen at 20 DEG C. using triethyl boron as catalyst in three times its volume of methanol/water (50/50 and 55/45 by vol.) and (for comparison) methanol, acetone, tetrahydrofuran and heptane and (2) vinyl chloride is polymerized under nitrogen at -20 DEG C. in methanol/water (50/50 and 80/20), methanol, diethyl ether, tetrahydrofuran and heptane. Specification 820,675 is referred to.  Reference has been directed by the Comptroller to Specification 864,137.
Patent GB-878690-A (GB)
Title: Discharge terminals for vertical gas conduits
Inventor: GRIEVE RICHARD HENRY
IPC: F23L17/00
Filed: 1957-04-08
Abstract: 878,690. Ventilating-shaft tops. FENTON, BYRN & CO. Ltd. May 30, 1958 [April 8, 1957], No. 11374/57. Class 25 A ventilating-shaft cowl comprises a squaresectioned duct 20 housing an electrically driven extractor fan 24 and supporting, through the intermediary of four posts 10 placed at each corner of a square, a mushroom-shaped cover 22 and an automatic shutter assembly having vanes 14 each pivotally suspended about its upper edge adjacent the cover. Each vane is suspended from the top edges 11, Fig. 3, of adjacent posts 10 and normally rests in an inclined position under gravity against sealing flanges 16, 17 respectively attached to the posts and formed along an upper edge of the duct 20. The contacting sufaces of vanes and flanges may be lined with rubber or felt. Multiple superposed vanes may be provided at each side of the structure formed by the duct 20 and so hung that the lower edge of a higher vane overlaps the upper edge of the one below.
Patent GB-114858-A (GB)
IPC: B64C3/40
Abstract: 114,858. Williams, J. W., and Williams, W. J. Jan. 23, 1917. Steering and balancing. -- Tn an aeroplane having the wings s adjustable fore-and-aft about axes at their inner edges. the inner edge of one wing is connected to the inner edge of the opposite wing by links J so that one wing moves backwards s while the other moves forwards. The inner parts of the wings are cut away to leave a skeleton frame, to the front edges of which are pivoted elevators D, which may be arranged to act also as ailerons. Planes, construction of. -The wings and elevators are of double-convex cross-section.
Patent GB-976344-A (GB)
Title: Improvements in or relating to escapement mechanism for typewriters
Inventor: MOCCAND ADRIEN
IPC: B41J19/42
Filed: 1961-03-29
Abstract: 976,344. Typewriters. PAILLARD S.A. March 29, 1961 [March 29, 1960], No. 11491/61. Heading B6F. An escapement mechanism comprises a ratchet-wheel 11, a " fixed " pawl 7-8 and a movable pawl 6 carried on a rocker 4, the " fixed " pawl 7-8 being resiliently mounted on the rocker by pivots 16 and shock-absorbing springs 17. Upon a typing action the rocker 4 pivots and movable pawl 6 disengages from the ratchet and pivots back by a spring 10, at the same time the " fixed " pawl 7-8 prevents rotation of ratchet 11. When the rocker comes back pawl 6 is engaged by the reset tooth of the ratchet-wheel and the pull of ratchet-wheel 11 moves the pawl 6 against a stop 12 mounted on the pawl 7-8. The shock-absorbing springs 17, interleaved with nylon, accept the shock and prevent rebound.
Patent GB-493315-A (GB)
Title: Improvements in and relating to containers for cigarettes and other products and methods of making same
IPC: B65D85/10
Filed: 1937-04-22
Abstract: 493,315. Compound sheet materials. HUMOCO CORPORATION. April 22, 1937, Nos. 11492 and 11493. Convention dates, July 21, 1936 and March 18, 1937. [Class 140] [Also in Group XVII] A container for cigarettes &c. is made from a sheet of laminated material comprising one or more layers of paper &c. 15 secured by latex, guttapercha, &c. to one or more layers of tin or aluminium foil &c. 16 which may be lacquered. A heat-plastic film 18 is utilized to form the longitudinal seam and films 17 form part of the end closures. In a modification, the foil lamina may be replaced by a thin sheet of polyvinyl resin or a film of non-hygroscopic lacquer. In a further modification, the foil layers 16 may be mounted on both sides of the paper &c. layer 15. Specification 281,174, [Class 94 (ii)], is referred to.
Patent GB-161076-A (GB)
Title: Improvements in and relating to buttonhole sewing machines
IPC: D05B3/08
Filed: 1920-04-26
Abstract: 161,076. Imrie, H., (Reece Button Hole Machine Co.). April 26, 1920. Clutches, friction and ratchet. -The cam drum 4 is continuously driven for a partial rotation by a ring gear 92. Mounted loosely on the hub 98 of the drum is a disc 99 connected to the drum through a spring 101 and carrying pins 109, Fig. 12, on which swing links 108 connected to arms 106 rigid with cams 104 which are pivoted at 105 to the flange 91 of the drum. The spring 101 tends to turn the disc 99 and drum relatively so that the cams 104 are held in clutching engagement with the ring 92 through slots 110 in the flange 91, to drive the drum. The cams 104 are disengaged from the ring 92 by the straightening of toggle links 112, 115, connected respectively to the disc 99 and an arm 116 rigid with the drum, through the engagement of a projection 118 with the portions 121, Fig. 6, of a stationary cam 119. Other mechanism drives the drum intermittently while it is declutched from the ring 92.
Patent GB-1517586-A (GB)
Title: Overrunning clutches
IPC: F16D41/06
Filed: 1976-03-24
Abstract: 1517586 Ratchet clutches TORRINGTON CO 24 March 1976 [25 March 1975] 11783/76 Heading F2C In a ratchet clutch having rollers 26 in a cage between an inner race (a shaft 10 as shown) and an outer housing 16, one of which is provided with camming surfaces, the cage is integral with a plain bearing between the housing and the inner race. In the embodiment shown in Fig. 1 the bars 22 of the cage contact the shaft 10 and are integral with sleeve bearing portions 28 and 30. The camming surfaces are formed in a separate member 20 within the housing 16, the cage and bearing assembly rotating with the housing 16 with enough free play to permit the rollers 26 to move into and out of wedging with the camming surfaces. There may be a sleeve bearing on only one side of the rollers (Fig. 4, not shown) or between two sets of rollers (Fig. 6, not shown). The sleeve bearing may act as a thrust bearing by engaging the end of, or a shoulder in, the inner shaft (Figs. 5 and 7, not shown). The cage bars 22 may have the only bearing surfaces contacting the inner race. The cage and bearing assembly may be of cast plastics or metal, moulded plastics, or sintered plastics or metal. The sleeve bearing portions can have grooves for lubrication. The rollers may be spring- biased, which springs can be separate or integral with the cage. The camming surfaces may be on the inner race.
Patent GB-1206678-A (GB)
Title: Method and apparatus for inductively heating workpieces comprising a flanged shaft
IPC: H05B6/06
Filed: 1968-03-11
Abstract: 1,206,678. Automatic position control. AEG-ELOTHERM G.m.b.H. March 11, 1968, [Nov. 16, 1967], No.11802/68. Heading G3R. [Also in Divisions C7, H3-5;] The position of a heating inductor 42 relative to the flange of a flanged shaft (not shown) being heated is maintained constant despite thermal expansion. A variable resistor 41 is movable in response to the position of a pin carried by the inductor 42 which engages the flange. The electrical signal from resistor 41 is compared with that from a manual set resistor 50 and the resultant control signal acts on a magnetic valve 48. Valve 48 controls the supply of hydraulic fluid e. g. oil, from a reservoir 47, to a piston 44, 45 carrying the inductor 42.
Patent GB-724529-A (GB)
Title: Improvements in and relating to operating mechanisms for thermostats or gas valves
Inventor: FLAVEL SIDNEY WILLIAM BASIL
IPC: G05D23/02
Filed: 1952-05-09
Abstract: 724,529. Thermal switches. DIAMOND H SWITCHES, Ltd. April 29, 1953 [May 9, 1952], No. 11829/52. Class 38 (5). [Also in Group XXIX] Adjusting means for a thermostatic electric switch comprising a disengageable driving connection between an operating spindle 10 and a member 6 which is adjusted thereby includes an angularly adjustable stop 22, locked by a screw 23, whereby when a cover 3 carrying the operating spindle is removed the member 6 cannot be rotated sufficiently to upset the calibration of the device. The disengageable connection consists of a projection 12 on the member 6 engaging a slot in a member 11 fixed to the spindle 10. A screw 14 clamps an operating dial or knob 13 to the spindle 10, being threaded through an upturned arm 16 of a plate 17 between which and a plate 19 is clamped by screws 18 a plate 20 non-rotatably mounted on the spindle 10. This arrangement facilitates calibration. Specification 724,528, [Group XXIX], is referred to.
Patent GB-1219082-A (GB)
Title: Frequency control of oscillators
Inventor: MILLER MICHAEL ROBERT
IPC: H04J3/06
Filed: 1967-03-14
Abstract: 1,219,082. Time division multiplex pulse code signalling; automatic phase control. POST OFFICE. 13 March, 1968 [14 March, 1967], No. 11842/67. Headings H3A and H4L. The invention provides a system for controlling the frequencies of oscillators in a system of interconnected oscillators having at least one oscillator directly connected to two or more other oscillators, e.g. in a time division multiplex p.c.m. system having a plurality of interconnected switching stages each having a master timing oscillator whose frequency is adjustable by control signals. As shown in Fig. 1, an exchange A is connected via lines L1 to L6 to further exchanges B to G respectively, station C also being connected to exchanges B and D by lines L7 and L8 and exchange E to exchange F by line L9. Each station has equipment AE, BE &c. common to all the lines connected to it and also has its own line equipment such as AL1 to AL6 &c. A local oscillator EO at each station operates at the digit repetition frequency and supplies timing waveforms via a pulse generator EPG, the oscillator frequency being adjustable by D.C. control signals supplied via a low-pass filter EF. Each of the line equipments AL1 &c. has a frequency comparator comparing the P.R.F. of the incoming digits with the P.R.F. of digits generated by the oscillator EO of the station to which the line equipment belongs, the resulting D.C. error signals being fed to a combining network such as CNA which adds the error signals and divides the sum by a factor dependent on the number of inputs to the combining network. The line equipment, e.g. CL2, Fig. 2, includes a store LDS, incoming signals being written in under the control of a timer LT operated by the incoming digit signals and read out by a local clock generator CE. Timing differences are measured by a toggle TR whose mark/space ratio varies in a sense dependent on whether the store is more or less full than a predetermined amount. The output of the toggle is integrated at INT, digitally coded at LC and transmitted over line L2 to the equipment AL2, Fig. 1. A similar coded signal is received from AL2, decoded and inverted at LD and combined in a differential amplifier LDA with the error signal from INT and added at ADD with the error signals from the other line equipments at the station, the resultant being divided at DN by the required factor and supplied via filter EF to control the oscillator EO.
Patent GB-791645-A (GB)
Title: Improvements in or relating to the fine comminution of plastic masses, particularly ceramic mixtures
IPC: B28B17/02
Filed: 1956-04-19
Abstract: 791,645. Comminuting apparatus. RUEMCKE, [nee SLIK], F. April 19, 1956 [April 19, 1955], No. 11894/56. Class 59 Apparatus for finely comminuting a plastic mass, e.g. a ceramic mixture comprises a stationary conical casing 4 provided with slots 5 through which a damp plastic mass is urged by means of a worm 3, the mass being centrifuged by means of rotating impellers 17, against a baffle ring 7 from which it is removed by a scraper 18. The impellers 17 are secured to ribs 8 which connect the ring 7 to a disc 9 mounted on an axially-displaceable rotatable shaft 10. The disc 9 carries a centrifuge ratchet disc 19 which projects into a groove 20 in the casing 4 which has a bell-shaped portion 6. In a modification, Fig. 3 (not shown), the plastic mass is urged through the slots in the casing by means of a piston and the baffle ring is integral with the disc 9 so that its open side is turned away therefrom.
Patent GB-136456-A (GB)
Title: Means for Effecting the Ready Repair or Joining of Fluid Conveying Pipes and for other Coupling Purposes.
Inventor: GOODWIN WALTER ERNEST
IPC: F16L55/16
Filed: 1919-05-13
Abstract: 136,456. Goodwin, W. E. May 13, 1919. Stuffing-box joints.-A coupling for pipes, rods, &c., especially applicable for repairing pipes of refrigerators on ships, is constructed of a sleeve h of slightly greater diameter than the exterior of the two sections a to be joined, so that it can be moved longitudinally along the sections to secure the parts in the. positions shown in Fig. 1. A tight connexion is secured between the sleeve b and each sections a by means of a flanged nut c which screws on the exterior of the sleeve band compresses a conical packing d of woodite or other material when the nut is screwed up. In a modification, Fig. 3, the sleeve B is expanded to form conical parts B<2>, and the threads for receiving the nuts C are formed on enlarged cylindrical parts at the ends of the sleeve B, glands being used in addition to conical washers or packing- pieces. Reference has been directed by the Comptroller to Specifications 4689/90, 17509/97, and 10831/01.