baber/WOPTO huggingface dataset:
Patent GB-1306119-A (GB)
IPC: F15B13/16
Filed: 1970-04-16
Abstract: 1306119 Stops HARDINGE BROS Inc 16 April 1970 [17 Dec 1969] 18215/70 Heading B3B Hydraulic apparatus for machine tools, e.g. a turret lathe, for limiting the deflection of a stop 109, 207 at the end of travel of a machine tool part 200, TC, comprises a piston-and-cylinder 201, 206 and 110, TP, a first fluid line 104, 204 connected near one end of said cylinder, a second fluid line 116, 208 connected near the other end of the cylinder, said fluid lines being alternately inlet and exhaust lines in response to the operation of valve means 102, 203 and causing relative movement between said piston and said cylinder, a pressure reducing valve 128, a pump A for introducing fluid into the first or second line acting as an inlet line and into said pressure reducing valve 128 at a first predetermined pressure, e.g. 300 p.s.i., fluid being conveyed through passage means 132, 220 from said pressure reducing valve 128 to said valve means 102, 203 and to the first or second lines acting as an exhaust line at a second predetermined pressure, e.g. 175 p.s.i., substantially above atmosphere, said passage means including a one-way valve means 134, 222 arranged to permit fluid passage from said pressure reducing valve 128 to said valve means 102, 203 and a line acting as an exhaust line but to prevent fluid passage from said valve means 102, 203 to said pressure reducing valve. During normal movements of a slide 200 or a turret TC, choke valves 212, 214 &c. are switched in by solenoid operated valves 216, 218, &c. to control the speed of movement. The main valves 102, 203 are also solenoid-operated.
Patent GB-743024-A (GB)
Title: Improvements in or relating to telephone apparatus
IPC: H04M1/76
Filed: 1953-07-01
Abstract: 743,024. Substation circuits. GENERAL ELECTRIC CO., Ltd., and JONES, A. F. June 29, 1954 [July 1, 1953], No. 18248/53. Drawings to Specification. Class 40 (4). [Also in Group XL (c)] At a substation in a central-battery system a transistor amplifier (see Group XL (c)) is connected between the microphone and the line terminals and is operated by an electric supply derived from the line current, a non-linear resistance element being provided in order to minimize variations in this supply caused by variations in line current on lines of different lengths. The operating potential for the transistor amplifier is developed across a resistance which is traversed by a portion of the line current, this resistance being shunted by a path containing the non-linear element which is preferably a thermistor. The non- linear element may be used to stabilize the input and output of the substation as described in Specification 707,492. The invention may be applied to substation circuits of known anti-side-tone types, such as that described in Specification 340,693.
Patent GB-739497-A (GB)
Title: Improvements in current transformers
Inventor: WELLINGS JOHN GALE
IPC: H01F38/30
Filed: 1953-07-02
Abstract: 739,497. Transformers. BRITISH THOMSON-HOUSTON CO., Ltd. June 25, 1954 [July 2, 1953], No. 18363/53. Class 38 (2). A high-voltage current transformer comprises interlinked loop-type primary and secondary windings 1, 2 the leads from which are led through separate bushing type insulators 14, 13 respectively, the insulators being joined to a metal casing 10 which surrounds the core and windings of the transformer. The transformer is supported on an earthed metal base 4 by the insulator 13, thus the casing 10 can be regarded as being at a potential somewhere between earth and the high voltage at the terminals 6; consequently the clearance between the casing 10 and the transformer may be less than that usual in a transformer of normal construction. The secondary winding assembly 2 may comprise more than one winding, each of which may be wound on a separate core member and the transformer assembly may be oil-filled. In an alternative embodiment each primary lead is led through a separate insulator, the dispositions of which relative to each other and to the insulator through which pass the secondary leads may be at any desired angles.
Patent GB-379036-A (GB)
Title: Auxiliary kites
IPC: B64C31/06
Filed: 1931-06-25
Abstract: 379,036. Kite string messengers. JUDD, E. H., 45, Bodley Road, New Malden, Surrey. June 25,1931, No. 18406. [Class 4.] A device for attaching to a kite or balloon string has surfaces enabling it to be carried up the string by the wind until it encounters a stop whereupon the 'surfaces are folded or otherwise rendered ineffective and the device slides down again. Means may be provided for automatically resetting the surfaces when a lower stop on the string is encountered. The device may be used as a toy or for carrying advertising matter, meteorological instruments or photographic apparatus. Fig. 2 shows a device resembling an aeroplane but having the planes b set vertically, two hooks being provided for connecting it to the kite string. Each plane b is carried by a vertical wire l, Fig. 11, pivoted in upper and lower plates m, n, the upper ends of the wires being bent over as shown and provided with eyes through which a wire c, Fig. 9, carrying one of the supporting hooks, is passed. The upper plate m has short slots p to enable the wires l to move laterally and the wire c is guided by a slot q. A rubber band is passed around the upper ends of the wires l, c to hold the planes b normally in their extended position but when the hook on the wire c encounters a stop j on the kite string the wires l are moved togglewise and the wings are folded. By forming the rear supporting hook on a hinged wire and linking it to the wire c the toggle can be moved in the opposite direction when a lower stop is encountered. A modification is described in which the wings b resemble a butterfly and are normally held extended by two interengaging members which are disconnected when the hook strikes the stop. In another modification the wing is mounted on a transverse hinge and is normally held in its operative position by a spring trigger which is released by the stop. The stop consists of a ball with a non-straight hole which binds on the string when the latter is in tension. The device may be provided with a balloon to enable it to carry heavier weights.
Patent GB-707419-A (GB)
Title: Method and apparatus for after-treatment of freshly spun rayon filaments or threads
IPC: D01D10/04
Filed: 1951-08-03
Abstract: <PICT:0707419/IV(a)/1> <PICT:0707419/IV(a)/2> <PICT:0707419/IV(a)/3> <PICT:0707419/IV(a)/4> <PICT:0707419/IV(a)/5> <PICT:0707419/IV(a)/6> In the after-treatment, such as washing, desulphurization, soaping and drying, of freshly spun rayon filaments travelling in the form of one or more layers of convolutions on a conveyer 1, (Fig. 1) the layers are covered by one or more protecting cloths 2 (preferably endless), which move with the conveyer in such a manner that displacement of the filament convolutions during the after-treatment is prevented.  As shown in Figs. 2 and 3, two separate protecting cloths 2, 3 may be employed.  Various devices for effecting the turning of the filament layer and uncovering of the convolutions at the end of the treatment are described.  In one such device (Fig. 7) the conveyer 2a is directed upwardly around rollers 7 and 10.  In another such device (Fig. 10), the conveyer 1 and a supporting cloth 2b are each constituted by a number of parallel threads which cross each other.  In another device (Fig. 6), the return roller 7 has a surface facilitating adherence of the filament, and adherence may be ensured by utilising roller 7 as a suction roller.  The covering and supporting cloths may comprise a net fabric to facilitate passage of treating liquids and hot air.  Specification 379,880 is referred to.
Patent GB-1496072-A (GB)
Title: Triazolo-benzodiazepine derivatives
IPC: A61K31/55
Filed: 1975-05-02
Abstract: 1496072 Triazolo-benzodiazepine derivatives TAKEDA YAKUHIN KOGYO KK 2 May 1975 [7 May 1974] 18489/75 Heading C2C Novel compounds II (in which R<SP>3</SP> is H or C 1-4  alkyl, Py is a pyridyl group, B is ethylene or trimethylene which may be substituted by a C 1-4  alkyl group, Y is O, S or NH, and the ring A is unsubstituted or substituted by one or more of halogen, nitro, C 1-4  alkyl, C 1-4  alkoxy and polyhalo-C 1-4  alkyl), and their C 1-4  alkyl esters and amides derived from amines of formula HNR 1 R 2 , where each of R<SP>1</SP> and R<SP>2</SP> is H, or an alkyl, cycloalkyl or cycloalkylalkyl group which may be substituted by an alkyl-substituted amino, hydroxy or alkoxy group, are prepared by reacting a compound IV in which X is a reactive ester of a hydroxy group, or a reactive derivative at the carboxyl group thereof, with either (a) a compound HY-B-NH 2  followed, if desired, by reacting the resulting acid (II) or derivative thereof with an amine HNR<SP>1</SP>R<SP>2</SP>, or (b) an amine HNR<SP>1</SP>R<SP>2</SP>, followed by reacting the resulting intermediate with a compound HY-B-NH 2 . Compounds IV and C 1-4  alkyl esters thereof are prepared as shown in the following reaction scheme in which R<SP>4</SP> is C 1-4  alkyl and X<SP>1</SP> is halogen Pharmaceutical compositions having muscle relaxant, anticonvulsant, sedative, antianxiety, tranquillizing and sleep-inducing effects, for oral or parenteral administration, comprise an amide of a compound II as defined above, together with a pharmaceutical carrier.
Patent GB-585482-A (GB)
Title: Improvements relating to thermionic valve amplifiers
IPC: H03F1/54
Filed: 1944-09-28
Abstract: 585,482. Valve amplifying circuits. COSSOR, Ltd., A. C., and WYNN, A. H. A. Sept. 28, 1944, No. 18610. [Class 40 (v)] An amplifier is provided with means for controlling the potential of one of the valve electrodes so as to prevent excessive anode dissipation when the anode circuit is off tune. The Figure shows an arrangement in which a portion of the anode R.F. potential of a valve V1 is applied by means of capacity potentiometer (C2, C3) to a rectifying circuit provided with a voltage delay. The rectifier output is applied as a negative bias to V2, which in conjunction with R2 forms a potential divider for the screen of V1. If the anode R.F. potential falls below a valve determined by the voltage delay, V2 conducts and lowers the screen potential of V1, thus preventing excessive anode dissipation in VI. The time constant of C4, R6 is adjusted to prevent distortion of C.W. of M.W. transmissions.
Patent GB-1212522-A (GB)
Title: Improvements in or relating to the preparation of silver oxide
Inventor: HEFFER JOHN PHILIP
IPC: C01G5/00
Filed: 1967-04-24
Abstract: 1,212,522. Ag 2 O 2 . JOHNSON, MATTHEY & CO. Ltd. 17 April, 1968 [24 April, 1967], No. 18679/67. Heading C1A. Silver oxide (Ag 2 O 2 ) is prepared by treating an aqueous solution of a silver salt with an oxidizing agent under alkaline conditions and in the presence of a minor quantity of a chloride ion. In the example NaOH was added to an AgNO 3  solution to which a little HCl had been added, and the mixture was heated at 90-95‹ C. with sodium peroxydisulphate. The precipitated Ag 2 O 2  was removed and washed.
Patent GB-1411669-A (GB)
Title: Semiconductor devices comprising an epitaxial layer
IPC: H01L27/00
Filed: 1973-04-18
Abstract: 1411669 Semi-conductor devices SONY CORP 18 April 1973 [19 April 1972] 18694/73 Heading H1K A structure for development into an integrated circuit consists of a monocrystalline semiconductor, e.g. 10 ohm. cm. N type silicon substrate, a layer of boron phosphide epitaxially deposited thereon, and a layer of the substrate material epitaxially deposited on the phosphide. The crystal structure of the phosphide depends on the conditions of deposition and the crystallographic orientation of the layers on that of the substrate. The phosphide, preferably undoped, is deposited by pyrolysis of a phosphine/ diborane mixture, at 900 C. to produce a facecentred cubic lattic structure or at 100 C. to give a hexagonal structure, and the silicon by thermal decomposition at 1100 C. of a mixture of silane with diborane, arsine or phosphine. The silicon layer has a surface orientation corresponding to that of the substrate while that of the cubic phosphide is (110) and 311) and that of the hexagonal phosphide (1010) and 1120) for a (100) and (111) orientated substrate respectively. Oxide-passivated circuit elements conventionally formed in the silicon layer are isolated by the high resistivity phosphide from the substrate which may itself include circuit elements, and from each other by resin filled etched grooves. A succession of additional layers alternately of boron phosphide and substrate material may optionally be provided. Since the phosphide is light permeable an array of photodiodes constituting a target may be provided in the silicon layer.
Patent GB-1437715-A (GB)
Title: Synchronising of cinematorgraphic cameras with projectors
IPC: G03B21/43
Filed: 1973-04-18
Abstract: 1437715 Cinematography BOLEX INTERNATIONAL SA 18 April 1973 [21 April 1972] 18784/73 Addition to 1355756 Heading G2E A cine camera has a pre-selector mechanism for setting, before filming is initiated, the number of frames to be recorded and means for recording on the film strip, at a predetermined position clear of the film frames, a marking for indicating that each of the pre-set number of frames is to be projected for an extended time. A pre-selector mechanism, Fig.4c, consists of a disc bearing a printed circuit embodying six concentric tracks A-F each contacted by a flexible finger I-VI. The disc is integral with a ratchet wheel 117 which co-operates with a pawl 138 oscillated during filming by mechanical connection to the shutter mechanism. The selector may be rotated manually to one of nineteen positions. Positions 1 to 4 correspond to normal projection at 18 frames/ second, normal projection at 9 frames/second, slowed-down projection and speeded-up projection respectively. On rotation to any of positions 5-19 filming is at 36 frames/second and, since the disc is gradually returned by the pawl 138, for the preset time and therefore the desired number of frames. Simultaneously the film is marked via the fingers V and VI and light emitting diodes to indicate that it should be projected at say 1 frame/second.
Patent GB-1441202-A (GB)
Title: 1-n-isoserylkanamycins and the production thereof
IPC: C07H15/236
Filed: 1974-04-30
Abstract: 1441202 Kanamycin derivatives ZAIDAN HOJIN BISEIBUTSU KAGAKU KENKYU KAI 30 April 1974 [15 May 1973 20 Aug 1973] 18938/74 Heading C2C Novel 1-N-isoserylkanamycin A, 1-N-isoserylkanamycin B and 1-N-isoseryl-3<SP>1</SP>,4<SP>1</SP>-dideoxykanamycin B and pharmaceutically acceptable acid addition salts thereof are prepared by acylating a protected amine of the general formula wherein R is a hydrogen atom or hydroxyl group, R<SP>11</SP> is an amino group, optionally blocked with a known protecting group, or a hydroxyl group, provided that when R is a hydrogen atom, R<SP>11</SP> is other than a hydroxyl group, R 1  is a known amino-protecting group and R 2  is a hydrogen atom, or R 1  and R 2  together form a known divalent amino-protecting group (prepared in conventional manner from the free amine), with a compound of the general formula HOOC-CH(OH)-CH 2 NR 3 R 4 , wherein each of R 3  and R 4  is a hydrogen atom or a known aminoprotecting group, or R 3  and R 4  together form a known divalent amino-protecting group, removing the amino-protecting groups from the obtained mixed acylation products containing an amide of the general formula and isolating the desired compound from the mixed acylation products which have been freed from the amino-protecting groups, followed optionally by salification of the product. Pharmaceutical compositions having antibacterial activity comprise, as active ingredient, 1-N-isoserylkanamycin A, 1-N-isoserylkanamycin B or 1-N-isoseryl-3<SP>1</SP>,4<SP>1</SP>-dideoxykanamycin B or a pharmaceutically acceptable acid addition salt thereof, together with a suitable carrier.
Patent GB-278827-A (GB)
Title: Improvements in personal head lamps
IPC: G02C11/04
Filed: 1926-07-29
Abstract: 278,827. Holmes, V. W. July 29, 1926. Goggles.-In a surgical or other personal head lamp in the form of a pair of spectacles, the eye apertures are surrounded by a series of small electric lamp bulbs. The spectacles comprise a back portion A in contact with the face, and a front portion c separated from the back portion by heat-insulating material and connected to it by means of rivets F. The back portion A may be made of papier-machÚ, fibre, or other material of low heat-conductivity and carries elastic straps terminating in a hook and eye. The front portion C may be made of sheet metal such as aluminium, or other material of high heat-conductivity, which may be painted white, polished, electroplated, or otherwise made reflecting. That part of the front portion C which surrounds the eye apertures is made flat to take the electric lamp bulbs D and is provided with ventilating holes G.
Patent GB-650782-A (GB)
Title: Improvements in and relating to hydraulic reciprocating pumps
IPC: F04B9/14
Filed: 1947-07-16
Abstract: 650,782. Reciprocating pumps. CROUCHER. A. H. July 16, 1947, No. 19015. [Class 102(i)] In a lever-actuated, hydraulic reciprocating pump in which in the pump delivery is provided a control cylinder 14 having a spring-loaded piston 13 adapted to operate so that the pressure in the cylinder 14 causes the displacement of the piston 13 in opposition to the spring 16 and thereby imparts motion to the fulcrum 7 of the lever 2 to vary the ratio of the lengths of the arms of the lever 2 in proportion to the variation in delivery pressure, the member forming the fulcrum 7 for the lever 2 is slidably arranged in guides 9 extending in line with the axis of the cylinder 14 and the lever 2 is slotted to engage the fulcrum 7. Two pump cylinders 18 are mounted on a common body 17 from which extends the control cylinder 14 perpendicular to the piston axes. The two-part handle 2 is pivoted to stirrups 5 and straps 4 joining the pistons 6 and is slotted to engage the fulcrum 7 provided with rollers 8 engaging slots in the guide members 9 and positioned by means of links 10 attached to a block 11 on the end of the piston rod 12. A spring 16 between the block 11 and body 17 acts on opposition to pressure fluid entering the cylinder 14 and causing the piston 13 to move the rod 12, block 11, links 10 and hence the fulcrum 7 to a position nearer the body 17. Stops 33 are provided to maintain a constant arc through which the ends of the handle 2 moves. The Provisional Specification states that the pump body may be made of light alloy. Specification 503,872 is referred to.
Patent GB-936339-A (GB)
Title: Process for extracting carboxylic acids produced by fermentation
IPC: C12P7/44
Filed: 1962-05-17
Abstract: A process for extracting carboxylic acids from aqueous solutions thereof, said acids being produced by fermentation, comprises extracting said acids with a solvent comprising a mixture of tri-n-butyl phosphate and a minor proportion of at least one liquid diluent, said diluent having a specific gravity lower than that of tri-n-butyl phosphate, being substantially insoluble in water and chemically inert towards the said acids under the extraction conditions.  Suitable diluents include White Spirit, kerosene, n-butyl ether, n-butyl acetate, methyl ethyl ketone and n-butyl chloride.  The specific gravity is preferably from 0,6 to 0,85 and the diluent is preferably of low volatility.  5 to 30 parts of diluent per 100 parts by volume of phosphate may be used.  The carboxylic acid may be liberated by means of strong inorganic acid prior to extraction.  The aqueous solution may be concentrated prior to extraction.  The organic solvent extract may be water-washed to recover the carboxylic acid, generally at a higher temperature than that used for the extraction.  An apparatus for continuous extraction and water-washing is described.  Citric and itaconic acids are extracted in examples.  Lactic and fumaric are also mentioned.
Patent GB-330415-A (GB)
Title: Improvements in or relating to photographic cameras
IPC: G03B15/16
Filed: 1929-06-20
Abstract: 330,415. Askania-Werke Akt.-Ges. vorm. Centralwerkstatt Dessau und C. Bamberg Friedenau. Oct. 26, 1928. [Convention date]. Cameras for taking a series of photographs on one plate; finders.-Successive photographs of a moving aircraft are produced on a plate by means of a shutter tube which exposes only a small area of the plate and is movable about two axes at right angles concordantly with the movements of a finder in which the object is followed. The tube 2 is supported by a universal joint 5, 6 and connected by a link 8 to a lever 9, 3 pivoted at 10 to the finder telescope 12 which is rotable about its axis. A mirror mounted opposite the telescope is turned by a linkwork when the lever 9 is rotated about the pin 10. The lever 3 is moved by hand to keep the object in the finder, and the shutter tube follows the movement. An electrical device opens the shutter periodically, and if the tube moves beyond the limits of the plate, contacts are opened breaking the circuit.
Patent GB-1603247-A (GB)
Title: Production of nitroguanidine from guanidine nitrate by the action of aqueous sulphuric acid
IPC: C07C239/00
Filed: 1978-05-11
Abstract: Nitroguanidine is prepared from guanidine nitrate by the action of aqueous sulphuric acid and, optionally, nitric acid. In this process the reconcentrated sulphuric acid obtained from the preceding step is used, the reaction being carried out using from 2.5 to 3.5 mol of sulphuric acid per mol of guanidine nitrate. The dehydration is carried out using from 82 to 85 % by weight strength sulphuric acid at a temperature of from 40 to 80 DEG C, preferably from 40 to 60 DEG C, for from 1 to 3 hours. The sulphuric acid is then diluted, by adding water or wash acid at 0 to 5 DEG C from a previous step, to from 25 to 35 % strength by weight. After the nitroguanidine which has precipitated has been separated off, the sulphuric acid diluted to from 25 to 35 % strength by weight is reconcentrated to be used again.
Patent GB-219175-A (GB)
Title: Improvements relating to brakes for rail vehicles
IPC: B61H7/02
Filed: 1923-07-25
Abstract: 219,175. Davies, T. I., and Davies, T. U. July 25, 1923. Acting on flat sides of wheels; skid. - Mechanical means comprising track brakes adapted to bear frictionally on the rails are provided to increase the effective load on the wheels of a railway vehicle, brakes being applied simultaneouslv to such wheels. The brake blocks 14, 14<a> are carried by beams 15 and act on the inner surfaces of the wheels. An operating lever 5 worked from the handwheel 9 through the medium of the screw 10, nut 12, and links 13 is connected by toggles 16 to the beams 15 near one end of the latter, and near the other end by a beam 18 pivotally linked to the lever 5 and connected to the beams 15 by pins engaging inclined slots 19<a> formed on ears on the beams 15. The track brake is formed bv U-shaped members 21, the long leg of which is connected by pin and slot 22 to the frame, while the short leg is connected to the beam 15, the middle part 24 being adapted to engage under the upper flange of the rail. The bracket 7 supporting the pivot 6 of the lever 5 may move upward against the influence of the spring 7<a> to allow the members 21 to swing inwards on passing fish plates. In a modification, the lever 30 pivoted to the frame at 30<a> is linked at 31 to toggles 33 which apply radially acting brake blocks, the pin 32 of the toggle being also pivoted to the track brake 35.