baber/WOPTO huggingface dataset:
Patent GB-1248209-A (GB)
Title: Improvements in or relating to modulation systems
Inventor: MCGIVERN MICHAEL JOHN
IPC: H03F3/217
Filed: 1967-12-30
Abstract: 1,248,209. Pulse amplifier. PLESSEY CO. Ltd. 20 Dec., 1968 [30 Dec., 1967], No. 59279/67. Heading H3T. A pulse width modulated input signal is split into two signals, one consisting of alternate pulses of the input signal and the other of the remaining pulses, these two signals being amplified simultaneously and separately and then recombined by a transformer and rectifier arrangement. For modulating an R.F. carrier with an audio signal, the audio source (1, Fig.- 1, not shown) is combined in a comparator (4) with a sawtooth from an integrator (3) fed by a square wave generator (2) to give the pulse width modulated input signal. This is split by a gate (5) controlled by the square wave generator and feeding parallel amplifiers (8, 8a). A transformer (9, Fig. 5, not shown) with a centre tapped primary which receives the output of the two amplifiers (8, 8a), has a secondary driving bridge rectifier (10) to produce an amplified version of the input width modulated signal. This is smoothed by chokes (21, 22) and capacitors (23, 24), and the resulting D.C. signal varying in magnitude with the audio signal provides the H.T. supply for the R.F. carrier amplifier. Integrated circuits may be used.
Patent GB-596799-A (GB)
Abstract: 596,799. Totalisators. BELL PUNCH CO., Ltd., and MILBURN, R. March 2, 1945, Nos. 5231 and 16910. [Class 40 (i)] A system, such as that used in a totalisator installation, comprises a number of sending stations transmitting to a receiver provided with a rotatable unit for moving one or more search arms over associated groups of contacts electrically connected with the various sending stations, a continuously rotating member and a clutch for connecting it to the rotatable unit, the searcher arm being brought to rest when it reaches the contact energized from one of the sending stations. Each sending station s<1>, s<11>, s<111>, has a number of class keys 2, corresponding to different classes of tickets to be issued, operation of a key causing three additional pairs of contacts 3 to close. Closure of key 31 completes a circuit over a common line 4 to the coil 13 of an electromagnetic clutch, so that disc 10 is attracted by pot magnet 12 and shaft 6 connected to the continuously rotating shaft 5. The searcher arms rotate until searcher arm 9 reaches the contact 9<1> connected to the sending station at which the key 2 has been operated. Circuits are then completed from contacts 3<11> to the coil 14 of the clutch, which neutralizes coil 13 to release shaft 6, and also to coil 20 of a magnetic brake, so that disc 18 is attracted by stationary magnet 19 and brakes the shaft. A circuit is also completed through searcher arm 8 from contacts 3<111>, registering device 23, the operated class key 2 to the appropriate class registration device 2<111>. Registering device 23 records the total of all tickets issued and closes contacts 23<1> and device 2<111> records the total of tickets issued. in the appropriate class, and closes contacts 2<111>. This completes a circuit through contact 7 to a magnetic device 21 at the calling station, which closes switch 21<1> to operate motor 22, causing a ticket to be issued and also reopening the pairs of contacts 3. If the contacts at two stations are operated, the searcher arms rotate until they reach the first set of energized contacts and the operation proceeds as described above. When the contacts 3 are opened, however, coil 13 remains energized through the contacts 3<1> at the second sending station so that the searcher arms again rotate until they reach the second set of energized contacts. In a modification, Fig. 2 (not shown), the clutch coil is stationary and the pot magnet alone rotates so that the use of slip rings is dispensed with. The neutralizing coil is also omitted and the brake coil made sufficiently strong to overcome the force of coil 13. The driving clutch may be a magnetic or other permanently acting clutch, so that the rotatable unit is driven continuously until one of the contacts is, energized from a sending station when the rotatable unit is braked and the clutch caused to slip or be disengaged.
Patent GB-1331390-A (GB)
Title: Assembly for making a frame for use as a building component
IPC: E06B3/263
Filed: 1971-12-23
Abstract: 1331390 Window or door frames W HARTMANN & CO ZWEIGNIEDERLASSUNG NURNBERG 23 Dec 1971 [8 Jan 1971] 59912/ 71 Heading E1J An assembly comprises metallic frame parts 1, 2 with T-shaped portions, and two strips 5 of heat insulating material each having projections engaging behind both portions. Further projections 6 abut together between the portions and are secured by adhesive 4. The strips are of plastics e.g. PVC or neoprene.
Patent GB-1212580-A (GB)
Title: A photoelectric switch adapter for a lantern
Inventor: BERNHEIM GEORGE WILLIE
IPC: H01R33/94
Filed: 1968-12-30
Abstract: 1,212,580. Adapters. G. W. BERNHEIM. 30 Dec., 1968, No. 61750/68. Heading H2E. [Also in Division G1] A photo-electric twilight switch which is screwed into a lamp socket and has a socket for receiving the lamp bulb, 'is provided with a telescopic tube which extends from the switch to the lamp globe to prevent lamp light reflected by the globe affecting the photo-electric cell. The switch body comprises two similar halves 20a, 20b held together by a threaded ring 22 which forms the plug for screwing into the lamp socket. The telescopie tube 100 in front of the photoresistor 36 is urged outwards by spring 105 until the cup 108 meets and distorts to conform to the wall of the lamp globe. A set screw 112 holds the tube 100 retracted while the switch is rotated in the lamp socket so that photoresistor receives light from a desired direction. Electrical contact is maintained during rotation by the spring loaded plunger 60. In one modification, the tube is held retracted by lugs and in another the tube sections are threaded and spring 105 is omitted. The switch comprises a series connection of the photoresistor and a relay coil across the supply, the relay contact being in series with the lamp bulb.
Patent GB-664356-A (GB)
IPC: B66C23/44
Abstract: 664,356. Jib-cranes. PUGH, J. G., and PUGH, T. F. April 26, 1949. No. 11350/48. Class 78 (iv). A hoist for an agricultural tractor comprises a tubular standard adapted to be rotatably mounted at its lower end on the tractor and having a tubular transverse arm secured to its upper part, a winding drum adapted to be driven by the power take-off shaft of the tractor and associated with a brake, and a cable extending from the drum through the standard and transverse arm and guided by pulleys, a portion of the cable depending from the arm being provided with load engaging means. As shown in Fig. 4, the hoist is mounted on a cross-bar 14 which is mounted in place of the usual cross-bar connected between anglesection uprights 13 secured to angle-irons 12 on the body of a tractor and which carries a plate 17 to which is secured a ball head 18. On the ball head is mounted by means of a cup 57, the tubular standard 19 which is braced by a strut 47 secured between a bracket 16 on the cross-bar 14 and a lug on a ring 37, Fig. 1, rotatably mounted on the standard 19 between two collars 35, 36. A further strut 41 is secured between a lug 38 on the collar 37 and an L- shaped bracket 43 attached by bolts or studs 44 to a facing 45 on the tractor body. At the upper ends of the standard 19 is welded the tubular arm 20 which is braced to the standard 19 by a pair of braces 24 connected by plates 25, 26 and by further braces 27, 28, 29. A cable 53 passes from a drum 51 on the power take-off shaft 50 of the tractor, over a pulley 54, through central openings 58 in the ball head 18 and cup 57, up through the hollow standard 19, over a pulley 33 held by brackets 30 to project into slots in the tubes 19, 20, and over a pulley 22 held by spaced brackets 21 at the end of the arm 20, the cable being secured to a pin 62 carried by the brackets 21 and supporting a load pulley 59 in its bight. A brake band, Fig. 4, may be engaged with a brake drum 52 integral with the drum 51 by a lever 67. In an alternative construction the ball head 18 is mounted on a bracket at one side of the backaxle casing of the tractor and the structs 47, 41 are connected to the other side of the casing and to a bracket at the forward end of the engine respectively, passed while the cable 53 passes over two pulleys before extending up through the standard 19. The struts 47, 41 are connected so that they can readily be disconnected from the tractor and the standard 19 lifted off the ball head 18 to dismantle the hoist.
Patent GB-2005510-A (GB)
Title: PAL television signal time base corrector
IPC: H04N9/455
Filed: 1978-08-09
Abstract: Relates to compensating those time base errors in a reproduced swinging burst colour television signal which are caused by inaccurate switching of the subcarrier burst and which result from the inability of a phase error detector from distinguishing phase errors due to burst switching errors from phase errors due to time base errors and which therefore treats both as time base errors with consequent inaccurate compensation of a time base error in the reproduced signal. In an embodiment the output error signal of the time base error detector is delayed by one line period 34, subtracted 32 from the undelayed error signal and the difference signal so formed passed directly and via an inverter 39 to a switch 36 which is changed over at line frequency so that a direct voltage signal appears at 41 whose average magnitude is determined predominantly by the switching error component. The signal at 41 is smoothed in an integrator 42 and the magnitude of the signal resulting therefrom determines the magnitude of a square wave signal produced by a generator 43. The square wave signal is arranged to be of opposite sign but of substantially the same magnitude as the switching error component so that when added to the detector output signal at 44 the switching error component is substantially removed. <IMAGE>
Patent GB-783443-A (GB)
IPC: D06P3/70
Abstract: 783,443. Dyeing and printing polyacrylonitrile fibres. CIBA Ltd. Dec. 17, 1954 [Dec. 18, 1953], No. 36637/54. Class 15 (2). In the dyeing or printing of fibres of polyacrylonitrile, including copolymers and mixed polymers containing polyacrylonitrile, there is employed a 21: 4<SP>1</SP> - diamino - -1: 11 - azobenzene dyestuff which is free from acid groups imparting solubility and contains in the 4-position a tertiary amino group, preferably a dyestuff of the formula in which X and Y each represent an alkyl residue of low molecular weight which may contain a hydroxyl, methoxy or cyano group. Further substituents, e.g. alkyl and alkoxy groups of low molecular weight, may be present in one or both of the benzene nuclei. The dyestuff is preferably fixed on the fibre in the form of its salt with an organic or inorganic acid, many of which are specified, and to effect this, the salt may be preformed and applied to the fibre or the fibre may be treated with the acid prior to, simultaneously with or subsequently to the application of the dyestuff. If the dyestuff base is insoluble it may be applied by the dispersion dyeing process, suitable dispersion agents being specified. Dyeings of good fastness are obtained by associating the dyeing process with a treatment with an oxidizing agent or with an aldehyde or agent yielding an aldehyde. Thus the dyeing may be treated in an acid medium at a raised temperature with an alkali metal bichromate, if desired in the presence of a salt of thiocyanic acid, e.g. ammonium thiocyanate, or with formaldehyde, acetaldehyde, glyoxal, hexamethylene tetramine, monomethylol-urea, hexamethylol-triaminotriazine or a precondensate of formaldehyde and dicyandiamidine. Treatment with an aldehyde vapour may also be effected. Alternatively the fibres may be dyed in a single operation in an acid medium with the dyestuff base in the presence of the aldehyde. As a further alternative, the dyestuff base may be reacted in an acid medium with an aldehyde of low molecular weight, e.g. formaldehyde, to yield a condensation product which is then employed for dyeing the fibre. Numerous examples are given.
Patent GB-2006901-A (GB)
Title: Caliper Disc Brake
IPC: F16D65/18
Filed: 1978-10-02
Abstract: A master cylinder 17 and its reservoir 23 are incorporated in the brake caliper for supplying pressure to move said actuating piston 13, communication between the actuating cylinder and master cylinder chambers being provided by passageways 29, 30. <IMAGE>
Patent GB-2010787-A (GB)
Title: Bottle and Closure Cap
IPC: B65D47/24
Filed: 1978-10-30
Abstract: A bottle has a neck (1) with an external annular rib (2), a tilting nozzle closure comprising a cap with a peripheral wall (4a) which has an inwardly projecting annular rib (4c), which engages under the rib (2) to hold the cap on the bottle, and a second annular rib (3) around the neck of the bottle above the first rib (2). The cap can thus be fitted to the neck of the bottle in a partially closed position in which the rib (4c) engages under the upper rib (3), so that the bottle can be filled with liquid and gas under pressure through the nozzle (7), the liquid and gas passing through the nozzle and thence through a gap between the end (1a) of the neck and a closure part (6) of the cap.The liquid and gas under pressure is prevented from escaping during filling by the tight engagement of the peripheral wail (4a) of the cap around the annular beading (3). <IMAGE>
Patent GB-2007121-A (GB)
Title: Multiple Unit Machine Installation
IPC: B23Q39/02
Filed: 1978-11-01
Abstract: A machining installation, for machining complex workpieces which require both heavy and light machining operations such as milling and drilling respectively, comprises at least two machining units centrally located for working on a workpiece at a single station, the two machining units being designed to correspond to respectively different operating duties, such as according to cutting efficiency or performance/capacity or power requirement. Preferably the machining units are arranged in a common frame and are individually controlled by micro-processor control mechanisms, the individual control mechanisms being coordinated by a small computer. The mechanism units are arranged to work on the same side or on different sides of the workpiece. The units may be demountable from the frame.
Patent GB-2015110-A (GB)
Title: Machine With Upper and Lower Tools and Guard Means
IPC: F16P3/04
Filed: 1979-01-31
Abstract: A machine having a lower tool 122, an upper tool 121, means 102 for moving the upper tool 121 towards the lower tool 122 and guard means 103, 108 for protecting the operator, said guard means comprising an upper guard member 103 movable downwardly in advance of the upper tool 121 and connected to a lever 115 pivotably connected to the machine frame 101, a lower guard member 108 displaceable and/or adjustable relative to the frame 101 and connected to switching means 114 for initiating operation of the means 102, means 119 for pivoting the lever 115 to move the upper guard 103 downwardly and an adjustable member 117 being provided for actuating the switching means 114 when the lever 115 has moved the upper guard member 103 to its lowermost position. <IMAGE>
Patent GB-2019675-A (GB)
Title: Power supply arrangement for an electric flash tube
IPC: H02M3/338
Filed: 1979-02-28
Abstract: A power supply arrangement for an electric flash tube comprises a ringing choke inverter B for converting a direct current voltage from a direct current power source 10 to an alternating current voltage, a rectifier circuit C for rectifying the alternating current voltage a charging circuit D for storing electric energy derived from the rectifier circuit on a main storage capacitor 20 of the charging circuit, and an electric load F in the form of a flash tube 27, the arrangement including an oscillation control circuit H having a capacitor 30 which restarts the ringing choke inverter B after the main storage capacitor 20 has discharged through the flash tube. An oscillation stop timing circuit may be additionally provided for maintaining the charge on the main storage capacitors for a period of time. <IMAGE>
Patent GB-2016405-A (GB)
Title: Shovel for a loader
IPC: E02F3/96
Filed: 1979-03-06
Abstract: This invention relates to a shovel for a loader. Loaders are usually provided with a shovel pivotably mounted for lateral movement, on the free end of a telescopic jib. Such loaders are notable for their high loading capacity. Unfortunately, they are unable completely to remove all the rubble lying immediately in front of a face being tunnelled. The shovel S of the invention overcomes this disadvantage by having a plurality of teeth 13 arranged along one edge 12 thereof. Each of the teeth 13 is pivotable relative to the shovel S, and means 19, 20, 21 and 22 are provided for fixing each of the teeth 13 in at least two positions within its pivotable range. In one position, the teeth 13 lie in the plane of the base of the shovel S for use in scooping up rubble, and, in another position, the teeth extend down at an angle to the base of the shovel to constitute means for scraping rubble away from a working face 31. <IMAGE>
Patent GB-2020341-A (GB)
Title: Setting-out railway track
IPC: E01B29/24
Filed: 1979-05-04
Abstract: Shuttering for longitudinal concrete plinths under the rails is provided with holders for clip anchorages which can be adjusted so that the anchorages are positioned to give the rails the required gauge and cant as well as the required position relative to a datum to accommodate curves, and gradients. The concrete of the plinths is then poured around a part of the anchorages and when the concrete sets the anchorages are held firmly in position. <IMAGE>
Patent GB-2049869-A (GB)
Title: Chain link
IPC: F16G13/07
Filed: 1979-05-24
Abstract: A chain link has a narrower end provided with cut outs (4) in the side plates (1) of the link and a wider end traversed by a link pin (3). The pin has an arris (5) formed by a corner of the preferably square pin cross-section and, in use of the chain, this arris (5) rolls in a corner (6) of each opening (4). <IMAGE>
Patent GB-2029266-A (GB)
Title: Thermal recording elements
IPC: G11B7/253
Filed: 1979-06-26
Abstract: A thermal recording element has on a support a conventional recording layer (preferably of a metal such as Sn, Bi or In) and, to give protection with minimum loss of sensitivity, a protective layer of an organic high molecular weight material (such as a chlorinated polyethylene), a fatty acid having more than 10 carbon atoms or an amide thereof being present in or on the protective layer, preferably in an amount of 0.1 to 20 wt% when used in the layer.
Patent GB-2030199-A (GB)
Title: Collapsible cones
IPC: B60Q7/00
Filed: 1979-08-16
Abstract: A collapsible conical element, particularly in the form of a collapsible road marker cone, comprises a base 1, e.g. of sheet rubber, and a coiled strip 4, preferably of a resilient plastics material, the strip 4 having at least two longitudinal projections, one on each face, e.g. as in Figure 6, with the projection on the radially outward face being below the projection on the radially inward face when the cone is in the upright position base down. The base 1 has a substantially circular aperture within which the outermost turn of the strip is retained, either by virtue only of the resilience of the coiled strip or with additional fixing. For extending the strip to form a cone a handle may be provided which is insertable within the innermost turn of the coiled strip. Alternatively, a spring may be provided for self-erection. The strip, for road marker use, may bear retroreflective designs. The collapsible conical element may be made in a form suitable for use as a loudhailer cone, a container, a funnel or as flexible and extensible ducting. <IMAGE>
Patent GB-2037947-A (GB)
Title: Quiet operating valves for fluids
IPC: F16K1/42
Filed: 1979-11-06
Abstract: An annular valve seat 5 is supported on a shoulder 16 of a housing 1. A space is provided below that part of the seat 5 which sealingly engages a valve plate 4. Annular spring action of the seat 5 reduces noise on opening or closing the valve. The valve is suitable as head or foot valve for a piston pump. In an alternative construction the seat 5 is undercut to provide the space and rests on the housing 1 through a shoulder 17 projecting down from the periphery of the seat 5. <IMAGE>
Patent GB-2063134-A (GB)
Title: Apparatus for linearly moving a tool
IPC: B23K37/02
Filed: 1979-11-08
Abstract: An apparatus for linearly moving a tool 2, e.g. an electric welding torch cutting tool or spray, comprises a linearly movable carriage 1 to which the tool 2 is secured, a rail 3 along which the carriage 1 is linearly movable, and slider means 4 secured to the carriage 1 for sliding movement relative to the rail 3. A drive cable 5 (e.g. of wire, chain or rope) secured to the carriage 2 forms a closed loop having runs which extend along the rail 3 such that the carriage may be driven to and fro along the rail. Control means including spaced actuating members 28 along the rail 3 are provided for selectively actuating or deactuating the operation of the tool 2 secured in use to the carriage 1, via a switch 29 carried below the carriage. Actuating members 26 may be provided at or adjacent each end of the rail for actuating a limit switch 27 to reverse the direction of movement of the carriage 1. Ultrasonic, arc and plasma welding means are referred to. <IMAGE>
Patent GB-2065191-A (GB)
Title: Walls or roofs comprising solar-energy collectors
IPC: F24S10/75
Filed: 1979-11-16
Abstract: The solar-energy collectors 24 comprise parallel supports 20a,b to the outside of which, and overlying at least some of the area between which, are mounted exterior panels 28 transparent to solar radiation. interior panels 50, parallel to the external panels, are mounted on the inside of the supports 20a,b. Between the exterior and interior panels are mounted solar-energy absorbing panels 30, so that an air-passage is formed by the supports and the interior and solar panels. Air is conveyed through the air-passage and absorbs heat from the solar panels. The solar-energy connector does not protrude outward from the normal building contour. The collecting apparatus 24 may include a solar energy absorptive panel 30 which is mounted between the convention support members 20a, 20b in the wall or roof of a building, and which includes an outwardly facing dark collecting surface 32, and an opposite inner surface 33 having fins 42, 43 integrally formed therein to facilitate transfer of heat to air passed therealong. <IMAGE>
Patent GB-2037908-A (GB)
Title: Improvements in or Relating to Torque-transmitting Devices
IPC: F16D43/208
Filed: 1979-11-30
Abstract: A rotary torque-transmitting device has co-operating driving and driven members (11, 12 or 41, 42) and at least one pair of co-planar roller elements (15 or 54) transmitting a torque load through respective line contacts with said members, at least one of which contacts is obliquely offset to produce a force component acting against a resilient bias (20, 21, 23 or 57, 59, 60) for urging the rollers to counter-rotate from their load- transmitting positions to disengage the drive or trigger a load sensor. The line contacts are on portions (34, 35 or 53, 67) of the driving and driven members that overlap each other transversely to the plane of said pair of rollers to permit a minimum oblique offset of the contact line and thereby increase sensitivity. The roller elements may be cylindrical rollers (15) with axes parallel to the rotary axis of the device and the line contacts along their length. <IMAGE>