baber/WOPTO huggingface dataset:
Patent GB-1254710-A (GB)
Title: Exposure time control system for a camera
Inventor: MORI CHIHARU
IPC: G01J1/46
Filed: 1968-11-28
Abstract: 1,254,710. Transistor bi-stable and time delay circuits. ASAHI KOGAKU KOGYO K.K. 28 Nov., 1968 [28 Nov., 1967], No. 56585/68. Heading H3T. [Also in Divisions G2 and G4] A camera exposure time control arrangement generates a first voltage, on the base of transistor T 5 , dependent upon the logarithm of the intensity of light incident upon a photoresponsive element CdS, and a second voltage, on the base of transistor T 6 , dependent upon the logarithm of the diaphragm aperture and/or film sensitivity value as set by variable resistor V r3 , the voltages being stored upon a memory capacitor C M  during exposure while light is interrupted to the photoresponsive element, the arrangement further comprising the connection of a logarithmic expansion circuit including transistors T 20 , T 21  to the memory capacitor so that a timing capacitor C T  is charged with a constant current, the value of which is proportional to the incident light intensity until the voltage on the timing capacitor reaches a predetermined value to thus determine the exposure time. Transistors T 1 , T 2  connected in series act as diodes to produce a voltage on the base of transistor T 3  which is proportional to the logarithm of the photocurrent through the photo-conductor CdS. A change-over switch SW M  is operated upon camera release so that the voltage stored on capacitor C M  is fed via a high input impedance Darlington connection circuit T 17 , T 18 , T 19  and a bias voltage adjusting circuit consisting of variable resistors V r6 , V r7  and transistors T 12 - T 16  to a logarithmic expansion circuit T 20 , T 21 . The collector current of transistor T 20  is thus proportional to the incident light intensity and is constant irrespective of the voltage on timing capacitor C T  due to the saturation characteristics of transistor T 20 . Upon the voltage on capacitor C T  reaching a predetermined value, a transistor T 30  is switched by a Schmitt circuit 24-29 from a conducting to a non-conducting state to deenergize a shutter electromagnet Mg. The trigger level of the Schmitt trigger circuit is held constant by a stabilized voltage supply circuit and temperature stabilized by a threestage Darlington circuit T 31 -T 33 . The trigger value may be adjusted by variation of resistor V r9 . In an alternative embodiment, Fig. 8 (not shown), the design of the diaphragm aperture and film speed circuit is altered. In the case when a linear rotation of the adjusting rings results in a geometrical variation in the exposure values the linear variation of the corresponding resistances is used to produce a corresponding voltage on the base of transistor T 6  without the need of a logarithmic compression. To this end, the variable resistors are connected to a constant current source to produce an input to a two-stage Darlington circuit.
Patent GB-1334288-A (GB)
Title: Fuel cell utilising fused thallium oxide electrolyte
IPC: H01M8/02
Filed: 1971-12-07
Abstract: 1334288 Fuel cells with molten electrolyte UNITED AIRCRAFT CORP 7 Dec 1971 [13 Jan 1971] 56715/71 Heading H1B The molten disc-shaped electrolyte E contains thallium oxide or a mixture of thallium oxide with materials with which it forms eutectics such as Tl 2 O/(TlNO 3 ) 4 /(AgNO 3 ) 4 . The electrolyte may also contain up to 15% by weight of an inert material, e.g. the oxide of thorium, cerium or magnesium. Air of oxygen is supplied to chamber D and a fuel, e.g. hydrogen or a hydrocarbon is fed to chamber B. The anode A may be of platinum doped nickel and the cathode C of a platinam-gold alloy doped nickel. These electrodes may be porous bodies including a polymer binder. The electrolyte E may comprise a ceramic body with Tl 2 O retained in the pores. In another embodiment the anode is of nickel foil and the cathode of gold foil.
Patent GB-1359548-A (GB)
Title: Permanent magnetic rotor for synchronous electric machines
IPC: H02K1/27
Filed: 1971-12-09
Abstract: 1359548 Permanent magnet rotors for A.C. machines UNIVERSITY OF SOUTHAMPTON 23 Nov 1972 [9 Dec 1971] 57180/71 Addition to 1324147 Heading H2A The present invention provides that the magnets in the rotor defined by Claim 1 of the parent Specification 1,324,147 each has its magnetic axis extending substantially tangentially of the rotor axis, and that each magnet 4, in a respective slot 3, is provided with a pair of magnetic pole shoes 5 arranged one adjacent each magnet pole at the side of the slot, both shoes being at least partially magnetically isolated from the polepieces 6 and having induced therein the localized poles. In the embodiment shown, the isolation is created by adhesive, e.g. epoxy resin layers 7, which secures the magnets and shoes to the laminations 1. In another embodiment, Fig. 2, the shoes are formed by portions of the laminations which are bounded by radial and tangential slots (12, 13) which are filled by cast Al to form the isolation.
Patent GB-1420490-A (GB)
Title: Control device for cranes
IPC: B66C23/88
Filed: 1973-12-11
Abstract: 1420490 Automatic control of cranes J HAVARD H CHARONNAT and F COVA 11 Dec 1973 [19 Dec 1972 31 July 1973] 57248/73 Heading G3N The jibs of two cranes mounted on opposite sides of a common load are controlled so that the orientation of the load remains the same during steeving (luffing) and slewing. Each crane has an arm which reproduces the movement of the jib, and the two arms are operatively connected so that the jibs move in a co-ordinated manner. As shown in Fig. 11, the slew or orientation α and sleeve # of a first pilot crane 1 are controlled by a lever 86 through thyristor drives 87, 88. Clutches 34, 52 transmit the jib movement to a pilot arm 42 connected to a slider on a guide 56. Movement of the arm 42 produces a corresponding displacement of a guide 57 and slider 61 connected to a follower arm 63 so that potentiometers 70, 71 are set to produce electrical signals corresponding to the required values of steeve and orientation of a second follower crane 2 These signals are supplied to comparators 76, 77 in respective servo-mechanisms. A gate 84 responds to excessive speed of the follower crane to modify the command signal to the pilot crane. The hoisting of the crane hooks is controlled by a common lever 91. Mechanical details of the construction of the guides 56, 57, arms 42, 63 and associated components are described with reference to Figs. 1-10 (not shown). A further embodiment, in which the arms are constituted by sliding members carrying racks for driving pinions and mounted on rotatable tables is also described, Figs. 12-16 (not shown).
Patent GB-1370784-A (GB)
Title: End fittings combined with multi-pipe devices
IPC: F16L37/56
Filed: 1971-10-22
Abstract: 1370784 Pipe couplings BTR INDUSTRIES Ltd 22 Oct 1971 [2 Dec 1970] 57306/70 Heading F2G  In a multi-pipe connector, plug member 18, having spigots 14 connected to pipes 12 can be rotated relatively to sheath 13, to cable the pipes 12 and then locked by clamping ring 17, against relative rotation. The plug may be retained in a socket 26 by a U-shaped spring clip 30.
Patent GB-1450107-A (GB)
Title: Article-wrapping apparatus
IPC: B65B11/10
Filed: 1973-12-13
Abstract: 1450107 Wrapping apparatus ARENCO JM AB 13 Dec 1973 [14 Dec 1972] 57710/73 Heading B8C In wrapping apparatus in which an article 3 is advanced through a curtain of foil 5 extending transversely of a feedconveyer 6 with the foil being welded by jaws 7 behind the article, a reciprocating platform 10 with an article stop 15 lifts the articleoff the conveyer and advances it through the curtain of foil. Just before welding the platform deposits the article back on the conveyer and returns for the next article.
Patent GB-1146137-A (GB)
Title: Improvements in polymeric blends of non-polar polyolefin, chlorinated polyolefin and polyvinyl chloride, and method of preparing same
IPC: C08L27/06
Filed: 1967-12-20
Abstract: 1,146,137. Curable PVC compositions. GENERAL ELECTRIC CO. 20 Dec., 1967 [29 Dec., 1966], No. 57937/67. Heading C3P. A curable composition for insulating cables comprises (1) a polymeric blend of (a) PVC, (b) a chlorinated polyolefin in a wt. ratio to (a) of 1: 3 to 3: 1 and (c) 20-60% of the total wt. of a non-halogenated polyolefin (2) a stabilizer for (a) and (b) and (3) a peroxide curing agent. A masterbatch for preparing the composition excludes (3) and contains a smaller proportion of (c). Component (a) is preferably a homopolymer but may contain up to 10% of a comonomer; (b) is preferably chlorinated polyethylene containing 35-50% chlorine and (c) is preferably polyethylene or may be a polymer or copolymer of ethylene, propylene or isobutylene or a copolymer of one of these with up to 50% of vinyl acetate or ethyl acrylate. The stabilizer may be basic lead silicate, lead oxide, basic lead silicate-sulphate or magnesium oxide. The curing agent is a tertiary peroxide, particularly dicumyl peroxide. Optional additives are polymerized trimethyldihydroquinoline, calcium stearate, carbon black, and antimony oxide.
Patent GB-1428497-A (GB)
Title: Method for producing l-glutamine
IPC: C12P13/14
Filed: 1973-12-14
Abstract: 1428497 L-Glutamine AJINOMOTO CO Inc 14 Dec 1973 [16 Dec 1972] 57984/73 Heading C2C L-Glutamine is produced by culturing an L-glutamine-producing mutant which belongs to one of the genera Brevibacferium, Corynebacterium and Aficrobacterium and which is resistant to at least one sulfa drug for example sulfapyridine, sulfathiazole, phthalylsulfathiazole, sulfadiazine, sulfaguanidine, sulfamethazine, sulfamerazine, sulfadimethoxine,sulfamethomidine, sulfamethoxypryidazine, sulfisomidine, sulfisoxazole, acetosulfamine, sulfanylamide, sulfisomezole, sulfaphenazole, sulfamethizole, sulfaethiodole, sulfapyrazine, irgafen or irgamide under aerobic conditions in an aqueous culture medium containing assimilable sources of carbon and nitrogen and inorganic salts until L-glutamine accumulates in the medium; and recovering accumulated L-glutamine from the culture medium.
Patent GB-1177896-A (GB)
Title: Collapsible Rail Vehicle
Inventor: SCROGGS JOHN ELBERT
IPC: B61D15/12
Filed: 1968-12-09
Abstract: 1,177,896. Collapsible rail vehicles; frames; suspensions. J. E. SCROGGS, J. E. WEBB, and I. R. S. JOHNSON. 9 Dec., 1968, No. 58319/68. Headings B7D, B7E and B7H. To render a rail inspection, maintenance and repair vehicle 1 separable into three parts for transport, a powered unit 2 is connected to an outrigger frame 62 by transverse frames 64 and 69 pivoted at 70 and 72 to the outrigger frame 62 and releasably secured to the powered unit 2 by pin and hole connections 106, and a frame 120 releasably secured to the transverse frames 64 and 69 by pin connections 126 and including an equipment and material box 128, the driven live rear axle of the powered unit 2 being releasably connected to the live rear axle of the outrigger frame 62 so as to drive it. The unit 2 and the frame 62 are inclined inwardly to render the vehicle stable. The driven rear axle of the unit 2 is formed at its inner end with a polygonal or non-circular stud which keys into a like socket mounted on a shaft connected to the rear axle of the frame 62, two housings surrounding the shaft and axles being screwed on to each other. The handlebar assembly 20 is pivotable about a pin 22 and retained in position by a pin 26. The wheel treads are electrically insulating. Both front wheels have a coil tension spring suspension. A petrol engine drives the rear wheel of the unit 2 via chains and sprockets.
Patent GB-1414319-A (GB)
Title: Apparatus for sensing the quantity of reclaimed electrostatic  developer material
IPC: G01F23/20
Filed: 1972-12-19
Abstract: 1414319 Recovering residual electrostatic toner XEROX CORP 19 Dec 1972 [30 Dec 1971]  58570/72 Heading G2H An electrostatic reproduction apparatus, such as an electro-photographic copier, includes means by which residual toner powder is removed from a printing or reproduction surface and passed to a weighing machine where it accumulates in supported containers 60. If an excessive amount of toner is allowed to accumulate in one or more container, a switch is operated to prevent further accumulation. Preferably residual toner is conveyed through duct 32 in suspension in air, and is separated by centrifugal force in separator 40.
Patent GB-1449476-A (GB)
Title: Optical apparatus with controlled-intensity light source
IPC: H05B41/392
Filed: 1973-12-18
Abstract: 1449476 Automatic control of light intensity INSTRUMENTATION SPECIALTIES CO 18 Dec 1973 [10 Jan 1973 25 April 1973] 58594/73 Addition to 1425971 Heading G3R A photometric optical apparatus is provided with an automatic electric control arrangement to maintain the intensity of a light beam constant. The optical apparatus, which is the subject of parent Specification 1425971 (see Heading F4R), comprises a two section ellipsoidal reflector 34 Fig. 1 having a lamp 30 (e.g. mercury vapour) located at one focus and a light radiating member 32 at the other focus. The member 32 comprises a thin flat translucent portion including a layer of fluorescent particles and which receives light reflected from reflector 34 and re-radiates it, in the form of two matched beams, with constant intensity ratio, to measuring cells 18, 20, via respective holes 46, 47 in the reflector 34 and respective light absorbance cells 14, 16, e.g. connected to chromatograph apparatus. INTENSITY CONTROL A photo-resistive detector 40 senses the intensity of light through a third hole 48 in the reflector 34, its resistance decreasing as the sensed intensity increases and vice-versa. As shown Fig. 5, the detector 40 is connected to the inverting input of an amplifier 52, a resistor 50 being adjusted to suit the dynamic range of the amplifier. The amplifier output controls a transistor 58 Fig. 6 and is a negative going signal when the intensity is increasing above an initial intensity set by a resistor 60 and is a positive going signal when it is decreasing. Thereby the lamp current is controlled and the intensity maintained constant. Alternatively the detector 40 may be located so as to receive light from the lamp 30 directly as in Fig. 3 (not shown). The lamp temperature may be automatically controlled by a circuit (not described), or a heat sink may be thermally coupled to the lamp. The absorbance cell 14 may be connected in the flow stream of a chromatograph column containing an organic solute in a solvent, while through the cell 16 pure solvent is passed. Differences in the light absorbances of fluid in the two cells 14, 16 is determined as a measure of the solute present in the column.
Patent GB-1346789-A (GB)
Title: Stabilized trichloroethylene or tetrachloroethylene
IPC: C07C21/10
Filed: 1971-12-17
Abstract: 1346789 Stabilized trichloroethylene or tetrachloroethylene CENTRAL GLASS CO Ltd 17 Dec 1971 [23 Dec 1970] 58648/71 Heading C2C [Also in Division C5] Trichloroethylene or tetrachloroethylene is stabilized against decomposition by heat, light, air, moisture and metals by the addition thereto of (A) glycerine or glycidol, (B) at least one from p - methoxyphenol, 2,6 - ditert. - butyl - 4- methylphenol, p - tert. - butylphenol, p - sec.- butylphenol and p-propyl-m-cresol, (C) diisopropylamine and (D) epi-chlorohydrin or butylene oxide. The stabilized solvents contain 0À001%-1À0% by wt. of (A), 0-0001 to 0À1% wt. of (B), 0À0001 to 0À1% wt. of (C) and 0À001 to 1À0% wt. of (D).
Patent GB-1357082-A (GB)
Title: Flexible torque transfer assembly
IPC: F16D3/74
Filed: 1972-12-20
Abstract: 1357082 Flexible shaft couplings FORD MOTOR CO Ltd 20 Dec 1972 [23 Dec 1971] 58908/72 Heading F2U A flexible shaft coupling comprises end members 12, 13 secured to opposite ends (e.g. by electromagnetically shrinking a ring 26) of an outer bellows 11 (e.g. of stainless steel) within which an inner bellows 14 is engageable with but not secured to the members 12, 13, the annular space therebetween containing elastomer 18. The elastomer may be injected through a hole 27 while molten, air escaping via another hole 28 in the other end member. The inner bellows may be more flexible than the outer bellows.
Patent GB-1346629-A (GB)
Title: Distillation of polymerisable compounds
IPC: C07C7/05
Filed: 1971-12-20
Abstract: 1346629 Distillation of polymerisable organic compounds COSDEN OIL & CHEMICAL CO 20 Dec 1971 [11 Jan 1971] 59081/71 Heading B1B [Also in Division C5] The formation of polymer during the distillation of a diacetylenically unsaturated compound, such as diethynylbenzene, is substantially reduced by distilling it in the presence of an inert hydrocarbon diluent having a minimum boiling point of at least 5‹C higher than the boiling point of the polymerisable compound. The proportion of diluent in the mixture is preferably between 35 and 60 volume %. For distilling diethynylbenzene, the preferred diluents are the tri- and tetraethylbenzenes, the tetramethylbenzenes and the mixed ethyl, methyl and propyl substituted benzenes normally boiling above 200‹C. The distillation is preferably carried out under reduced pressure to maintain the maximum distillation temperature below 150‹C. The distillation of ethynylpropynyl benzenes is referred to; and it is stated that the process may also be used generally for the distillation of diacetylenically unsaturated aromatic hydrocarbons, as well as such hydrocarbons containing halogen atoms, or amino, nitro, hydroxyl or acid groups.
Patent GB-1455700-A (GB)
Title: Astable multivibrator circuits
IPC: H03K7/06
Filed: 1973-12-20
Abstract: 1455700 Transistor astable multivibrators; pulse modulation circuits SONY CORP 20 Dec 1973 [22 Dec 1972] 59096/73 Headings H3T and H4L In an astable multivibrator having a pair of cross-coupled transistors 1, 2 with a capacitor connected between their emitters, input electrodes of a pair of current switching devices 16, 17 forming a differential amplifier are controlled by the output signal of the transistors 1, 2 whereby the emitters of the transistors are connected to a common constant current source 18, 21 through the current switching devices 16, 17 alternately to provide a constant mark/space ratio of the output signal. By making the currents I through transistors 1 and 17 during alternate switching equal to that through transistors 2 and 16 the mark/space ratio can be made one and the second and higher harmonics can be suppressed. Level shifting diodes 19, 20 may be replaced by resistors. The multivibrator can be integrated and can operate as a frequency modulator or demodulator if the voltage source 12 is supplied with a modulating or modulated signal.
Patent GB-1350419-A (GB)
Title: Haulage grip for releasably gripping a traction cable
Inventor: LAURENT R
IPC: B61B12/12
Filed: 1971-12-21
Abstract: 1350419 Cable grips POMAGALSKI SA 21 Dec 1971 [31 Dec 1970] 59280/71 Heading F2X A releasable grip for coupling a vehicle movable along a track, e.g. a rail installed on the ground or on towers, or an overhead cable track, to a traction cable moving continuously at a high speed (>10 m./sec.) comprises two levers 1, 2 disposed symmetrically in relation to a plane containing the cable 11 and pivoted on bearing support members 3, 4 fixed on the vehicle chassis 23. One arm of each of the levers carries a jaw 12, 13 while the other arm 14, 15 carries a wheel 16, 17 adapted to move along a stationary guide rail 24, 25 installed along the track. The levers are provided coaxially with their spindles 3, 4 with toothed segments 9, 10 which intermesh to impose symmetrical pivoting of the levers. Each member 3 is hollow to allow the passage of a torsion rod 20, one end 26 of which is housed in the body of the corresponding lever 1, 2 and the other end 21 of which is housed in a block 22 integral with the chassis 23. The torsion bars 20 exert a stress on the jaws 12, 13 in the direction in which they are clamped on cable 11. The rails 24, 25 are inclined in relation to the direction of travel of the vehicle so as to impose an inward movement on wheels 16, 17 in opposition to the elastic force of torsion bars 20, thus opening the jaws 12, 13, or inversely so as to permit the closing of the grip on the separation of wheels 16, 17 by the above elastic force.
Patent GB-1371200-A (GB)
Title: Process for making composite sheets
IPC: B23K20/227
Filed: 1971-12-21
Abstract: 1371200 Composite sheet COMPAGNIE PECHINEY 21 Dec 1971 [23 Dec 1970] 59426/71 Heading B3A [Also in Division C7] A process for the production of a composite sheet with a thickness of less than 0À50 mm. and comprising a covering of aluminium or aluminium alloy on a substrate which consists of iron or soft steel in contact with the covering, comprises bonding the covering and substrate together by cold rolling with a cold-working rate or reduction of at least 90%, pretreating the formed sheet for at least one hour in the temperature range 275 to 460C., and subsequently annealing the sheet at a temperature of at least 480 C. The pretreatments may comprise either isothermal treatment followed by annealing at 500 C. for two hours, or progressive increase of the temperature to the annealing temperature, at rates preferably greater than 100 hour, followed by annealing. For coldworking rates greater than 93% a pretreatment in the range 375 to 425 C. is necessary in order to eliminate the presence of intermetallic compounds. The maximum heating rate required to produce sheet devoid of intermetallic compounds is lower the greater the amount of cold working of the sheet. If a long pretreatment is required owing to extensive cold-working then it is preferable to apply isothermal treatments using a two compartment furnace or two separate furnaces. Alternatively, a particular heating rate may be selected, for a short pretreatment, using a single furnace for both the pretreatment and annealing.
Patent GB-1373518-A (GB)
Title: Hair clasp or barrette
IPC: A45D8/24
Filed: 1971-12-28
Abstract: 1373518 Hair clasps LADY JAYNE (HAIR PRODUCTS) Ltd 20 Dec 1972 [28 Dec 1971] 60238/71 Heading A4V [Also in Division E2]  A hair clasp comprises a tongue 3 and a base 1 hinged together at one end and arranged to be closed about a bow-shaped spring 2 which bears at its ends 18, 19 on the base 1, there being a catch with a hook member 11 to hold the tongue and base fastened together, the spring 2 having an extension 21 co-operating with a cam surface (14) on the hook member so that it may be used to release the catch. As shown, the catch comprises two hook members 11 on the base which engage with formations 31 on the tongue, the extension 21 being arranged so that when depressed it acts on the surfaces (14) to move the hook members apart. The cam surfaces (14) are formed on the edges of flanges 13 of the hook members, alternatively Fig. 6 (not shown) the surfaces (36) are provided by the main inside surfaces of the hook members. The base, tongue, and spring are formed from sheet metal and the base may receive a decorative plastics cover (7). It is stated that the catch may comprise a single hook member.
Patent GB-1421350-A (GB)
Title: Heat transfer devices
IPC: F28D15/06
Filed: 1972-12-30
Abstract: 1421350 Heat pipes FERRANTI Ltd 26 Nov 1973 [30 Dec 1972] 60245/72 Heading F4U A heat pipe, either with or without a capillary wick, includes a bellows 14 on one or both ends of the pipe such that, in operation, the generation of heat by a heat source causes the bellows to expand longitudinally, due to the increase in vapour pressure within the bellows, to force the free end of the bellows into thermal contact with a heat sink 13. A plug 30, formed of thermal conducting material, may be inserted into the bellows 14, extending into the tube 11 of the heat pipe. Vapour is able to pass between guides 31 into the bellows. In other embodiments, a spring may be used to aid or deter the expansion of the bellows. The heat pipe is preferably used with printed board circuitry.