baber/WOPTO huggingface dataset:
Patent GB-1207822-A (GB)
Title: Improvements relating to steam turbines
Inventor: HELLER LASZLO
IPC: F01K3/26
Filed: 1967-10-26
Abstract: 1,207,822. Steam reheaters. TRANSELEKTRO MAGYAR VILLAMOSSAGI KULKERESKEDELMI VALLALAT. 26 Oct., 1967 [4 Nov., 1966], No. 48749/67. Heading F4A. [Also in Division F1] A steam turbine interstage steam reheating system comprises means for passing a heating metal vapour through a heat exchanger to effect reheating of the steam and condensation of the vapour. The reheating system includes finned heat exchangers 5 positioned in the steam path between the turbine stages 2, or within the turbine casings, and supplied with mercury vapour through conduit 6 from an evaporator 1 heated by the steam boiler flue gases. In reheating the steam, the mercury vapour condenses and is pumped back to the evaporator 1. To eliminate the need for interstage intercept valves, an emergency mercury condenser 9 is provided. During normal running a valve 10 is closed so that condenser 9 fills with liquid mercury. When emergency shut-down of the turbine is required, valve 10 is opened so that the cold mercury runs from condenser 9 into heat exchangers 5 and starts evaporating, thus cooling the interstage steam and accelerating the stopping of the turbine. Any mercury vapour still being produced in the evaporator 1 is condensed in the condenser 9. Water contained in a drum 16 is used as the cooling medium in the condenser, a relief valve 15 preventing excessive steam pressure in the drum.
Patent GB-1481859-A (GB)
Title: Halogen-substituted benzimidazolone compounds and a process for their manufacture
IPC: C07D235/26
Filed: 1974-11-13
Abstract: 1481859 Chloro- and/or bromo-benzimidazolones CIBA-GEIGY AG 13 Nov 1974 [13 Nov 1973] 49203/74 Heading C2C Chloro- and/or bromo-benzimidazolones of general formula wherein X is Cl or Br; n is an integer of 2-4; R is -CH 2 OH, -CH 2 CH 2 OH, or -(CH 2 ) b X in which a is 3 or 4; b is 1-12 and R 2  is H or C 1-4  alkyl, are prepared by reacting I mole of a compound of formula with n moles of Cl 2  and/or Br 2 . The reaction is preferably effected in water in the absence of catalysts at 80-100‹ C. Amongst numerous examples the compounds 1,3-di-(2-hydroxyethyl)-, 1,3 - di - (cyanoethyl)- and 1,3 - di- (carboxymethyl) - 4,5,6,7 - tetrabromobenzimidazolone, and 1,3-di-(2-hydroxycyclohexyl)- and 1,3 - di - (2- chloroethyl) - 5,6 - dibromobenzimidazolone are prepared.
Patent GB-1450958-A (GB)
Title: Method of shape control for tandem rolling mill
IPC: B21B37/00
Filed: 1973-10-24
Abstract: 1450958 Rolling mills NIPPON KOKAN KK 24 Oct 1973 [9 May 1973] 49468/73 Heading B3M [Also in Division G3] A method of shape control for a tandem rolling mill comprises adjusting the roll bending force or the rolling load (gap) for at least one stand in response to a measurement of the shape of rolled material leaving the final stand. "Shape" refers to buckling along the edge or centre of the strip (Fig. 1, not shown) and is detected either optically, by variations in tension detected as changes in permeability, or by variations in thickness detected pneumatically, in all cases at several points across the width; details of these devices are not disclosed. As shown, the shape is measured at 8, the signal being differentiated at 9 and 10 if the variations exceed a dead band. 11, 12 are integrators and 13, 14 P.I.D. controllers whose outputs are limited at 15, 16 and control roll bending actuators 17, 18. This embodiment is for correcting shape at the edges and/or middle of the strip and adjustment is made at the final two stands. In an alternative embodiment (Fig. 6, not shown) correction of middle shape is effected in a similar way, but by adjusting the roll force (gap) of the two stands which precede the last one; this is to prevent interaction with the conventional gauge control system, which is provided, in all cases. In a further embodiment (Fig. 7, not shown) the system of Fig. 6 is applied to the penultimate stand only. The invention is discussed mathematically and graphs of results are given.
Patent GB-1198136-A (GB)
Title: Amusement and Physical Fitness Device
IPC: A63G11/00
Filed: 1967-10-31
Abstract: 1,198,136. See-saw. CAMBRIDGE RESEARCH & DEVELOPMENT GROUP and A. KAZDAN. 31 Oct., 1967 [3 Nov., 1966], No. 49483/67. Heading A6M. A see-saw has the form of a generally rigid unitary shell having. a substantially smoothly curved exterior and comprises. a pair of raised end portions 14, 15 each having a generally horizontal upper surface adapted as seats 16, 17, and a central portion 12 shaped to rock on a horizontal supporting surface about a transverse axes in a see-saw motion. The shell may be made of a plastics material, wood or sheet metal. The shell may be hollow or filled with a plastics material and may be provided with recessed handgrips 18, 19. Runners may be attached to the bottom of the shell so that it may 'be used as a sledge. A vertical central passage may be provided so that the shell may be mounted on a vertical support and used as a roundabout. A weight may be provided on the centre portion to improver the stability of the shell when it is used as a boat.
Patent GB-1427058-A (GB)
Title: Stripping apparatus
IPC: G03G15/00
Filed: 1973-10-24
Abstract: 1427058 Delivering sheets XEROX CORP 24 Oct 1973 [30 Oct 1972 13 Nov 1972] 49525/73 Heading B8R Apparatus for stripping a copy sheet from the surface of a zerographic drum comprises a finger or wedge member maintained separated from the drum surface by a small and predetermined distance (e.g. 0À0005-0À0015 inch) by means of an air cushion. The stripper assembly 20, Fig. 2, comprises a support member 22 mounted on the machine frame and supporting by means of spring plates 32, 34 a support member 25 receiving a rigid conduit member 36, Fig. 5, which supports a finger member 26 having a finger portion 27. The member 26 is urged towards the drum surface by a torsion spring 31 mounted on the member 22, and is spaced from the surface by an air cushion formed by air supplied through the member 36 and through apertures 28 in the surface of the member 26. Air also issues from a channel 45 to remove any loose developer material from the finger portion. In another form, Fig. 7, the stripper assembly 110 comprises a wedge portion 134 of a stripping head mounted on an arm 137 by a gimbal spring member 135 urging the head towards the surface of the drum 116, to the curvature of which the head conforms. The air cushion is formed by air supplied through a conduit member 146. Escaping air is directed along grooves 149 in the head under the leading edge of the copy sheet 122. The stripped sheet is guided by portions of two guide rails 145. Further air conduits may also be provided leading to the upper surface of the wedge portion 134 to assist stripping.
Patent GB-1450695-A (GB)
Title: Photographic apparatus
IPC: G03B15/04
Filed: 1973-10-24
Abstract: 1450695 Flash photography EASTMAN KODAK CO 24 Oct 1973 [24 Oct 1972] 49577/73 Heading G2A The description and drawings are substantially as in Specification 1449489, but the claims are directed to the tensioning of the spring 63 as the release lever 18 is depressed so that the drive lever 62 and hence sensing lever 60 are pivoted upwards to enter and release the pre-energized striker of the percussive flash-lamp, and the coupling between lever 60 and shutter driving member 64 so that the energy stored in the spring is imparted to member 64 which actuates the shutter.
Patent GB-1537057-A (GB)
Title: Semiconductor arrangements
IPC: H01L27/082
Filed: 1975-12-03
Abstract: 1537057 Bipolar transistors SIEMENS AG 3 Dec 1975 [19 Dec 1974] 49592/75 Heading H1K In a pair of bipolar transistors formed in a semiconductor substrate, the emitter or collector and the base zone of each transistor are in the form of coplanar doped zones, and the base zones are interconnected by a doped part of the substrate having the same conductivity type as the base zones. The base zones adjoin the collectors and emitters, and have free boundary faces which do not adjoin the collectors and emitters, which face each other, and which are separated by a minimum distance which does not exceed the minimum distance between the corresponding zones of the two transistors. As shown, a pair of transistors formed in opposite surfaces of a substrate 1 consist of emitter (or collector) zones 21, 31, collector (or emitter) zones 23, 33, and base zones interconnected by a doped region 11. The free boundary faces are separated by a distance h which does not exceed the separation of zones 21, 31 and 23, 33.
Patent GB-1236065-A (GB)
Title: Improvement in devices for bringing phases into contact
IPC: F16K1/36
Filed: 1968-10-21
Abstract: 1,236,065. Contacting gases with liquids. SOC. POUR L'EQUIPEMENT DES INDUSTRIES CHIMIQUES SPEICHIM. 21 Oct., 1968 [19 Oct., 1967], No. 49794/68. Heading B1R. A gas/liquid contact tray of the type having at least one opening covered by a valve cap mounted for movement away from and towards the tray in response to upward fluid pressure, has a valve cap formed with one or more upwardly convergent passages 4. As shown in Fig. 2 the marginal edge of the cap is corrugated but it may be flat or provided with downwardly extending tabs to prevent the valve cap touching the plate. Alternatively this may be prevented by strips secured to the plate around an opening. As shown in Fig. 5 the cap is dished and outwardly-facing openings 13 are provided in addition to the upwardly convergent openings.
Patent GB-1492090-A (GB)
Title: Filtering
IPC: B01D35/22
Filed: 1975-12-08
Abstract: 1492090 Filtration; ultrafiltration ALFALAVAL AB 8 Dec 1975 [23 Dec 1974] 50248/75 Headings B1D and B1X In filtration or 'ultrafiltration' using a filter or in cleaning the filter fluid flows along the upstream side of a filter 3 and creats a pressure gradient along the upstream chamber 1, and a corresponding pressure gradient is maintained along the filtrate chamber 2 so that the pressure drop across the filter 3 is uniform over its whole area. In Fig. 1 pumps 5, 11 recirculate unfiltered fluid and filtrate, and a net flow of filtrate is discharged by valve 9. In Fig. 2 (not shown) filtrate chamber 2 is divided into sections, each connected to one branch of a manifold (17) along which a pressure gradient is maintained. Fig. 3 (not shown) illustrates three filter units as in Fig. 1 operating in parallel. In Fig. 4 (not shown) there is no recirculation of filtrate, but filtrate chamber 2 is of tapering section to produce a pressure gradient. In Fig. 5 (not shown) filtrate chamber 2 is defined between filter 3 and a rubber membrane (20), and some unfiltered fluid flows through a throttle (24) and along the other side of the membrane, which transmits its pressure to the filtrate chamber. In Fig. 6 (not shown) a uniform pressure drop is maintained by directing cleaning fluid, which may be a solvent, through the chambers on both sides of a filter, avoiding the creation of reverse pressure gradients. 'Ultrafiltration' means filtering particles below 0.5 micron dia. but above molecular weight of 500.
Patent GB-1148207-A (GB)
Title: Improvements in or relating to bi-metal devices
Inventor: ROLLNICK MAURICE
IPC: H01H37/60
Filed: 1966-11-11
Abstract: 1,148,207. Valves. BELLING & LEE Ltd. 10 Nov., 1967 [11 Nov., 1966], No. 50778/66. Heading F2V. [Also in Divisions G1 and H1] Heating or cooling of a bimetal 1 causes it to release a resiliently stressed valve actuating member 9 from a latched position in which a cylindrical surface 8 on one member is engaged by a domed surface 4 on the other member, for example as shown. The bimetal 1 is heated or cooled by change in ambient temperature, or is heated by a heater 11, 12 close to or mounted upon the bimetal, respectively, or by current through the bimetal. A re-setting rod 17 is provided, and a hard rubber stop 13 prevents rebound. The cylindrical end portion 8 is formed by rolling the end of spring 9 or attaching a hollow or solid metal cylinder thereto. Setting is possible by varying the effective length of bimetal 1, by moving a bifurcate member 24 along the bimetal 1 in a slot 27 of the base.
Patent GB-1293147-A (GB)
Title: Improvements in or relating to pneumatic fluids circuitry
Inventor: GAMBLE KENNETH HAMMOND
IPC: F15B13/00
Filed: 1969-10-16
Abstract: 1293147 Pipe joints SCOVILL MFG CO 15 Oct 1970 [16 Oct 1969] 50817/69 Heading F2G A pneumatic circuit assembly in which valve units 14 are connected to a plurality of nozzles 25 by connecting elements 23 and flexible tubing 28, comprises a base member 11 with through holes 18 in registration with ports 16 of the valve units. Each connecting element 23 has a cylindrical shank 22, Fig. 4, which is cemented in a counterbored portion 21 of the holes 18, and one or more nipples 30. Flexible tubing 28 fits over the nipples 30 and nipples 27 on the nozzles 25. The other ends 26 of the nozzles 25 have means 32 for connection to conduits leading, for example, to machinery or other devices. 0-rings 17, which are seated in recesses in the valve unit ports 16, are compressed against the base portion 12 when screws 19 are tightened into the base. The assembly may be mounted by depending flanges 31 or the base member 11  may be planar and mounted on stand-off posts. The base portion 11 and the connecting elements 23 may be of plastics or metal, e.g. aluminium, the elements 23 being either moulded or assembled from parts and cemented together.
Patent GB-1520878-A (GB)
Title: Electrically assisted cycles
IPC: B62M6/55
Filed: 1975-11-04
Abstract: 1520878 Anti-theft devices JOSEPH LUCAS Ltd 4 Nov 1975 [23 Nov 1974] 50843/74 Heading B7J A pedal cycle includes a frame 11, a pedal assembly 16, chain means 17 coupling the assembly 16 to a rear wheel 15, an electric motor 21 carried by the frame 11, an electric storage battery (not shown) carried by the frame 11 and associated with the motor 2, and further means 22, 23, 24 coupling the motor to the wheel 15 whereby the motor when energized can assist propulsion of the cycle, and, a key operated lock assembly associated with the assembly 16 and including an electrical switch 38 in the circuit of the motor and battery, the key operated lock assembly having a first position in which a locking bolt 28 interconnects a tubular strut 19 of the frame 11 with the shaft 18 of the pedal assembly 16 to prevent rotation of the assembly 16, and in which the switch 38 is open, and a second position in which the bolt 28 is withdrawn under the urge of a spring 29 to permit rotation of the pedal assembly, and in which the switch 38 is closed to energize the motor 21. The key lock assembly comprises a casing 34 securable to the strut and housing a lock barrel 36 openable by a key 39 and having an extension 37 carrying a lever 33. The lever 33 through a slot in the hollow strut 19 and a slot in a tubular carrier 25. The lever 33 enters a slot 32 in the lock bolt 28. The latter is urged to its unlocked position by the spring 29. 'The carrier 25 is held in the strut 19 by spring-urged pins 26 engaging apertures 27 in the strut. The key-operated switch 38 is in series with a normally open manually closable switch on the cycle handle bars 13, and with a normal open switch which is closed by tightening the upper run of the chain 17 when transmitting pedal drive to the wheel 15.
Patent GB-1528214-A (GB)
Title: Radio teleprinter system
IPC: H04L1/16
Filed: 1975-12-12
Abstract: 1528214 Selective signalling DE STAAT DER NEDERLANDEN TE DEZEN VERTEGENWOORDIGD DOOR DE DIRECTEURGENERAAL DER POSTERIJEN TELEGRAFIE EN TELEFONIE 12 Dec 1975 [12 Dec 1974] 51021/75 Heading G4H In a radio teleprinter system, a calling station repeatedly transmits two blocks of characters, one character in each block representing the block number with the sequence of the remaining characters in the two blocks identifying a called station, the called station recognizes the identifying character sequence and sends the same sequence back, each character in response to receipt of one of a series of blocks, and the calling station compares this returned sequence with the sequence of identifying characters transmitted and in response to equality initiates transmission of message signals. The calling station has a generator for the identifying character sequence, with an output for each character, and the characters received from the called station are passed via a shift register (which serializes each in turn) to a set of comparators connected to the outputs of the generator respectively and enabled in turn by a counter driven by clock signals from the receiver circuitry. The comparator outputs are counted, the message signals being sent in response to all the comparators giving "equal" outputs.
Patent GB-1470940-A (GB)
Title: Simulated fires
IPC: F24C7/00
Filed: 1975-12-15
Abstract: 1470940 Gearing for conveying rotary motion PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 15 Dec 1975 51245/75 Heading F2Q Drive means for flicker fans 10 of a simulated fire comprise an electric motor 14 having a drive pulley 15, two pulleys 17 driven from the pulley 15 by a belt 16 which crosses over itself on each side of the pulley 15, and conical upper surfaces 24 on the pulleys 17 which are engaged by the peripheries of the flicker fans 10. A bracket 13 is attached to the electric motor 14 and carries pins 18 and shafts 20 which support the pulleys 17 and bearings 21 for the fans 10 respectively. In a modification, a drive rim 27, Fig. 5, of a fan 10 engages a flexible drive wheel 26. In a further modification, a fan 10 is supported by a jewelled bearing 28, Fig. 6, and a retaining bracket 31 is attached to the bracket 13.
Patent GB-1095227-A (GB)
Title: Improvements in input stages of radio receivers
IPC: H04B1/10
Filed: 1964-12-17
Abstract: 1,095,227. Radio frequency amplifier. TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. Dec. 17, 1964 [Dec. 24, 1963], No. 5132]/64. Heading H3T. A radio frequency amplifier stage of a radio receiver comprises a transistor 5 connected in common emitter manner with connections for applying the input signal between the base of the transistor and a point at earth potential for signals wherein there is connected in a path from the emitter of the transistor to the earth point an inductor 10, to provide broad band negative feedback, whose value is chosen sufficiently large for the amplitude of interference combination frequencies which would otherwise be produced in the transistor to be substantially reduced, but not so large that the signal-to-noise ratio of the receiver is not still determined by the signal to noise ratio of the stage. The amplifier is described as working in the VHF band, in which the inductive reactance of the inductor is about 75 ohms at 95 Mc/s. Negative feedback caused by the collector-base capacitance is neutralized by capacitor 13.
Patent GB-1279429-A (GB)
Title: Apparatus for making a pattern of the inner periphery of the lens holders of a spectacle frame
IPC: G02C13/00
Filed: 1969-10-20
Abstract: 1279429 Magnetic fastenings WERNICKE & CO KG 20 Oct 1969 [29 Oct 1968] 51330/69 Heading E2A [Also in Division G2] Apparatus for making a pattern of the inner periphery of each of the lens holders 1 of a spectacle frame includes means for releasably holding the spectacle frame on a work table 3 by the magnetic attraction between the table and loose blocks 9, the loose blocks having external surfaces 19 adapted to bear on the lens holder for pressing the lens holder against the work table. In the construction shown each block, which is of basically cylindrical shape, is provided with a helical ridge 13 which extends through less than 360 and the surface 19 which engages the spectacle frame is at a small angle to the perpendicular. In a modification instead of having a ridge each block can have a groove which provides the surface 19. Each block, as shown, consists of two parts one of which is made of plastics material and includes the ridge 13 and the other of which is a disc magnet 10 inserted into a recess in the base of the plastics part. The magnet can have its under surface grooved the grooves being arranged concentrically. The table has a circular opening 4 in it underneath which a marking device 5 is provided which is marked in rectangles and which assists in centering the holder of the spectacle frame the table also has a holding strip 6 which is adjustable in the direction of the arrow 7 to assist in locating the spectacle frame. In use a feeler projects through the opening 4 and engages the edge 8 of the opening 2 of the lens holder to determine its shape.
Patent GB-1242530-A (GB)
Title: Electrical measuring apparatus
Inventor: CRANK GEOFFREY JAMES
IPC: G01R27/28
Filed: 1967-11-14
Abstract: 1,242,530. Measuring insertion loss or gain. POST OFFICE. Dec.23, 1968 [Nov.14, 1967], No.51881/67. Heading G1U. An apparatus for measuring the insertion loss or gain of a network NT at relatively high frequency incorporates a high frequency generator TF for applying the operating frequency to two input circuits, one including terminals TT to which the network under test may be connected and a first adjustable attenuator RT1, the other being a reference circuit RA. The signal from either circuit is selectively connectible to a detector DET producing an output of lower frequency than the operating freqency or D. C., which output is selectively connectible to a first output circuit including adjustable attenuator RT2, or to a second output reference circuit RF. The input and output circuits are correspondingly selected by the ganged switches SW1, SW3. The attenuators RT1, RT2 are coupled for adjustment and the second compensates for errors due to any inaccuracies in the first. This overcomes the expensive problem of providing an attenuator which is highly accurate at high frequency. The stages in the high frequency attenuator may be formed from fixed film resistors, while adjustable wire round resistors may be provided in the low frequency attenuator, adjusted to provide precisely the attenuation required at each stage. In use, the reference circuit is first connected and the output at the meter LMS is noted. Then with the network NT connected to the terminals TT the input test circuit is connected and the ganged attenuators RT1, RT2 are adjusted to provide the same reading. With NT removed, they are again adjusted to provide the same reading, the difference in adjustment representing the required insertion loss or gain.
Patent GB-1493267-A (GB)
Title: Apparatus for collimating a beam of penetrating ionizing radiation
IPC: G21K1/02
Filed: 1975-12-03
Abstract: 1493267 Radiation beam collimators FERRANTI Ltd 3 Dec 1975 [3 Dec 1974] 52152/74 Heading H5R A collimator for a beam of penetrating ionizing radiation, e.g. gamma-rays, is made by forming a pattern of intersecting grooves 12, 13, 14, 15 in one surface 11 of a block 10 of material transparent to the radiation, at least partly filling the grooves with powder of a metal having a high radiation absorption coefficient, and closing the grooves with a cover of material transparent to the radiation to retain the powder in the grooves. The block and cover may be of acrylic or other plastics, and the powder may be of tungsten or lead. As shown, the grooves are in two orthogonal sets, with each set converging from the surface 11. The ends of the grooves are closed by a sleeve around the block, and if the grooves are only partially filled with powder the cover has projections extending into the grooves to retain the powder, which is compacted. The collimator is described for use with radiation emitted by a radio-isotope in a patient's body, and delimits an inspection field of the body.