baber/WOPTO huggingface dataset:
Patent GB-1322994-A (GB)
Title: Weld control circuit
IPC: B23K11/26
Filed: 1971-04-19
Abstract: 1322994 Charging and discharging capacitors; welding HUGHES AIRCRAFT CO 19 April 1971 [26 Feb 1970] 20698/71 Heading H2H A thyristor energized capacitor welding circuit has a switching arrangement which shunts the thyristor below a determined discharge current in order to ensure extinction. The welding capacitor 28 is charged from a rectifier set 14, 16, 18 of any type, through a thyristor 24 and discharged through thyristor 32 and transformer primary winding 30 when a temporary positive signal is applied to terminal 44. This may be provided by a one shot multivibrator (not shown) or a push button arrangement, the signal being stored by a capacitor 46 which decays through resistor 50 to below the firing value of thyristor 42; this remains conductive until current as measured by a series resistor 52 falls below the base emitter voltage of a transistor 56 which then becomes conductive hence allowing thyristor 32 to block. The signal on terminal 34 is preferably limited in duration to allow transistor 56 to block after a determined time. The voltage across resistor 52 is limited by a Zener diode 62. The thyristor 24 is held non-conductive during the discharge period by a line 54 connected to a capacitor charge controller 12. The base of transistor 56 is clamped to a maximum of 1À2 volts by another diode 60.
Patent GB-750580-A (GB)
Title: Improvements in optical means for affording clear vision through a wall inclined at a small angle to the line of sight
IPC: B64C1/14
Filed: 1954-07-15
Abstract: 750,580. Periscopes. LEDUC, R. July 15, 1954 [July 15, 1953], No. 20710/54. Class 97 (1). A device enabling an observer to see through a wall 4, for example, of a high-speed aircraft, when the incident light is at a high mean angle of incidence to the wall, comprises a block with parallel faces 2, 3, the face 2 being inclined to the wall 4 and having one edge coincident with the wall. The block may be replaced by two blocks, respectively providing the faces 2, 3 and having spaced, parallel inner faces perpendicular to the mean direction of light through the block. Also, each of the faces 2, 3 may be replaced by a pair of faces joining in a vertex facing away from the observer, corresponding faces at the two ends of the block being parallel. This arrangement provides a convergence of the light beams reaching the two eyes through the respective parallel pairs of faces and hence an increase of stereoscopic vision. In modifications of this arrangement the surfaces 2 may be carried on separate blocks and the surfaces 3 on a further block or blocks.
Patent GB-633391-A (GB)
Title: Improved thermic syphons for locomotive boiler fireboxes
IPC: F22B13/10
Filed: 1947-07-31
Abstract: 633,391. Water chambers in steam boiler fireboxes. LOCOMOTIVE FIREBOX CO. July 31, 1947, No. 20764. Convention date, Sept. 29, 1938. [Class 123(ii)] A thermic syphon 21 for a locomotive boiler firebox, particularly the combustion chamber thereof, comprises a flat hollow body portion 22, open at the top where it is provided with a laterally extending flange 26 and front and rear inlet necks 28, 29. The flange 26 fits and is welded in an opening in the crown sheet 13 of the firebox, and the necks 28, 29, which extend downwardly, first inwardly toward each other and then outwardly in opposite lateral directions, open through diaphragms 30 secured to the bottom sheet portion 16 of the combustion chamber, the two diaphragms preferably being arranged on a common transverse line of said chamber. The opposite side walls of the body 22 are stay-bolted at 23.
Patent GB-866975-A (GB)
Title: Improvements in or relating to electric networks for deriving amplitude modulated signals from frequency modulated signals
IPC: H03C1/50
Filed: 1956-07-04
Abstract: 866,975. Frequency discriminators. GENERAL ELECTRIC CO. Ltd., and EASTER, B. June 25, 1957 [July 4, 1956], No. 20770/56. Class 40(5) [Also in Group XL(b)] An amplitude/frequency converting network has zero output at a real frequency and further critical frequencies defining a pass-band not including the former frequency, so designed that the output amplitude varies linearly with frequency over the said pass-band. The transfer impedance function is so selected that one factor (p-jw 2 ) produces the linear amplitude/frequency response with reference to the real frequency W 2 , and so that the remaining factor represents a maximally flat pass-band, i.e. the first three derivatives with respect to p are zero. A suitable network, as shown, with two poles in the passband, may have shunt capacities 3, 5 across its input and output formed wholly or in part of stray capacitance, its zero being formed by the parallel circuit 6, 4. One other design of network, with three poles in the pass-band, may have an additional shunt capacitor and series inductance between the circuit elements 6, 4 and 7, 5, and an inductance in place of the resistance 8. A detector across the output terminals completes the discriminator. Alternatively two of the three pole networks, each having respectively positive and negative amplitude/frequency slopes and fed by an FM signal may each feed detectors whose outputs are differentially combined. The input shunt inductance of the three pole network may be in the anode circuit of a valve, and a D.C. blocking capacitor may then be in series with the inductor 6. To compensate for the resistance of inductor 6 the capacitor 4 may be replaced by two series capacitors whose junction is connected by a resistance to earth.
Patent GB-1430536-A (GB)
Title: Masts
IPC: B63B15/00
Filed: 1974-05-10
Abstract: 1430536 Masts G LAMBOLEY 10 May 1974 [10 May 1973] 20814/74 Heading B7V A yacht's mast is made by folding a flat trapezoidal metal plate so that the longer edges are brought into close proximity with each other but spaced apart which gives the mast torsional flexibility and the torsional characteristics of the mast are varied by connecting together or disconnecting the two edges at intervals therealong. In one embodiment a member is mounted within the mast adjacent the edges and connected thereto by screws, the length of the slot defined by the two edges being varied by removing or inserting additional screws for altering the torsional characteristics. Alternatively the two edges may have lips which are parallel to each end connected together at variable locations by screws. independent operation of brakes on opposite wheels comprises a housing 1 with ports 4, 5 for connection to the two systems and two chambers 2, 3 each of which accommodates a resiliently loaded closure member 6, 16 with an axial bore 17, 18 which closure member is opened by fluid pressure in its respective system such that only simultaneous opening of both members establishes communication between the two systems via the bores and passage 19. The two members are each loaded by a spring washer 15 and separated by a resilient sealing bush 21. In a second embodiment the spring washers are omitted and the sealing bush is spaced between two blocks and acts to provide the loading.
Patent GB-829940-A (GB)
Title: Improvements in or relating to centrifugal separators
IPC: B04B1/18
Filed: 1958-06-30
Abstract: 829,940. Centrifugal separators. KOEFOED-HAUBERG-MARSTRAND & HELWEG AKTIESELSKABET TITAN. June 30, 1958 [June 28, 1957], No. 20816/58. Class 23 In a separator having a bowl comprising a part 1, and a part 2 axially movable for periodic discharge of sludge, the part 1 is fixed to a cylinder 14 containing a piston 16 fixed to the part 2, and the cylinder is housed in the upper part of the lubricating oil chamber 41 so that the oil may be fed to either side of the piston to move the part 2. The cylinder is formed in the bowl spindle 15 which is driven by a wheel 36, and the piston has a rod 17 slidable within the spindle and connected to the distributer 6 which is fixed to the part 1. A member 32...34 is axially slidable on the spindle and receives and distributes oil thrown upwardly by the wheel. When in the lower position of the member shown, this oil enters an annular chamber 38 and passes through a duct 39 to the upper side of the piston to hold the part 2 against the part 1. When the member is in its upper position, the oil enters an annular chamber 21 some of the oil passing through a duct 29 to open a valve 24 whilst the rest of the oil passes through a duct 22 to the lower side of the piston so that the part 2 is raised from the part 1.
Patent GB-636914-A (GB)
Title: Improvements in dyes of the anthraquinone series and the dyeing of cellulose derivatives
IPC: C09B1/26
Filed: 1947-07-31
Abstract: 1-Nitro-5 or 8-sulpho-anthraquinone is obtained by nitrating 1-sulphoanthraquinone.  1-Nitro-5 or 8-chloro-anthraquinone is obtained by reacting the 5- or 8-sulpho body with sodium chlorate and hydrochloric acid.ALSO:Cellulose ester or ether (e.g. cellulose acetate) materials or superpolyamides are dyed with 1.4 - diamino - 2 - cyanoanthraquinones having halogen or amino groups in one or both of the 5- and 8-positions.  The amino groups may contain alkyl, hydroxyalkyl, aralkyl, or hydroaryl substituents, e.g. methyl, ethyl, hydroxyethyl, propyl, butyl and hydroxybutyl, amyl, octyl, decyl, dodecyl, octodecyl, benzyl, phenyl, naphthyl, tolyl, cyclohexyl, b -phenylethyl, p-benzoylphenyl, hydroxy - methyl - phenyl, hydroxyphenyl, sulphonamidophenyl, alkoxyphenyl and naphthyl.  The dyes are obtained by reacting with a cyanide, e.g. in aqueous solution a compound differing from the required compound in having a sulpho group instead of the cyano group, or by reacting with ammonia or an amine a compound differing from that required by having halogen instead of amino. The products may be applied as aqueous dispersions with the usual dispersing agents and may be used to colour lacquers and spinning solutions.  In examples, an aqueous solution of potassium cyanide is reacted with (1) 1.4-diamino - 2 - sulpho - 5 - chloranthraquinone, (2) 1.4.5 - triamino - 2 - sulphoanthraquinone, (3) 1 - amino - 2 - sulpho - 4 - butylamino - 5 - chloranthraquinone, (4) 1-amino-2-sulpho-4-butylamino-5-aminoanthraquinone, (5) 1.4-diamino-2 - sulpho - 5 - methylaminoanthraquinone, (6) 1-amino-2-sulpho-4-butylamino-5- or 8-methylamino-anthraquinone. 1.4.5- or 1.4.8 - Triaminoanthraquinone - 2 - sulphonic acids are obtained from the corresponding 5- or 8-chlor bodies by reaction with amines or with an acid amide (see examples below), followed by hydrolysis.  1.4 - Diamino-5- or 8 - chloranthraquinone-2-sulphonic acids are obtained from the corresponding 4-brom bodies by reaction with amines corresponding to the substituents listed above, or by reaction with amides (e.g. p-toluene sulphonamide, p - toluene sulphomethylamide, benzamide, or phthalimide), followed by hydrolysis.  1 - Amino-8- or 9 - chloranthraquinone is obtained by reduction of the 1-nitro body, and may be sulphonated to give 1-amino-2-sulpho-5-or 8-chloroanthraquinone, which may then be brominated in 4-position.
Patent GB-1535186-A (GB)
Title: Scaffolding fitting
IPC: E04G7/14
Filed: 1976-04-05
Abstract: 1535186 Scaffold clamps PRESS COMPONENTS CO Ltd 5 April 1976 [17 May 1975] 21077/75 Heading E2B The body of a scaffold clamp is made from a plate 11 in which four slits 12, 13, 14 and 15 are cut to extend inwardly from the periphery. The metal between the slits is then folded to give projecting wings, as shown in Fig. 2, which support pivots for the covers 20, 21 and the bolts 22, 23. Pimples 24 are formed on the opposite side of the metal to that in which the wings project and provide locating points for the scaffold tubes.
Patent GB-1390955-A (GB)
Title: Method and apparatus for controlling flow from wells
IPC: E21B43/10
Filed: 1972-05-05
Abstract: 1390955 Wells &c OTIS ENG CORP 5 May 1972 [17 May 1971 1 May 1972] 21091/72 Heading E1F A well passing through a producing formation F has production tubing T and a packer P-2 set above the formation, the tubing being movable downwardly to stop production in the event of a disaster or hazardous condition. As shown in Fig. 1 the tubing when raised for production is supported by dogs D, and when lowered to shut down production engages a packer P-1 and the well bottom B. Instead of resting on the well bottom the tubing may have a shock absorber engaging the packer P-2, and the tubing may have a piston supported by hydraulic pressure in a cylinder at the wellhead. The tubing may have a lower end which is substantially closed, or formed as a shock absorber, the production inlet to the tubing being side perforations in the tubing. The tubing may have a closed lower end and a side port which co-acts with a side port in the depending sleeve of a single packer. In the modification shown in Fig. 10 the tubing T has a lower part TS having a piston 111 sliding in cylinder 110 carried by the upper part, the lower part being raised for production by fluid supplied by a line CFL to the cylinder. In a modification (Fig. 11, not shown) in which the upper end of the tubing has a cylinder sliding over a piston fixed to the wellhead, and the cylinder is held in the raised position by locking dogs, the tubing may be moved to raised position by a finishing tool. In the construction shown in Fig. 14, the lower part TS-1 of the tubing has a plug 251 and the tubing is raised for production by supplying fluid from a source 270 through the upper part of the tubing and the upper part of the part TS-1 and through an aperture 234 into a cylinder space 235, the production passing through apertures 260 to the annulus 220 to discharge through the line Y.
Patent GB-1277685-A (GB)
Title: Selector switching mechanism
Inventor: VACCARO ANGELO
IPC: H03M7/00
Filed: 1970-05-01
Abstract: 1277685 Selector switches; attracted armature relays COLUMBIA CONTROLS RE. SEARCH CORP 1 May 1970 21104/70 Headings H1L and H1N [Also in Division G4] An electrical selector comprises a plurality of separate moving contact members 1b-16b which each engage with fixed contacts 1a-15a when actuating member 22 is moved in the direction of arrow 22a. A particular contact member can be selected to be operated by means of selector members 23 which can be moved between two positions and are slotted so that the moving member is not obstructed. In the selector shown there is one inlet 21 and 16 outlets so that four selector members are required having slots 25 and projections 24 as shown in Fig. 3. Operation of bar 23a to position 23a 1  enables members 9-16 which are disabled in the position shown as 23a when members 1-8 are enabled. Similarly member 23b can select groups of 4 to be enabled and member 23c groups of 2. The bar 23d selects which of the odd or even numbered contacts are enabled and by selective operation of the members an individual contact can be selected for operation. In a practical embodiment, Figs. 5-8 (not shown), a 64-way selector is shown which has 6-selector members operated between their two positions by electromagnets. The moving contact members are made of magnetic material and are actuated by an electromagnet which is energized after the respective selector electromagnets have been operated. In the case where the selector members are spring-biased to a rest position the appropriate selector electromagnets are continuously energized. The individual fixed contacts 1a-16a may be formed by printed circuit techniques on a continuous insulating substrate.
Patent GB-655214-A (GB)
Title: Improvements in closure devices for doors, gates and the like
IPC: E05F1/10
Filed: 1948-08-11
Abstract: 655,214. Door operating- appliances. VAUGHAN, A. L., and VAUGHAN, S. L., (trading as HUNTER & PRICE). Aug. 11, 1948, No. 21143. [Class 65(i)] A spring closure device comprises an arm 10, one end of which is pivoted at 11 to a bracket 12 adapted to be fixed to a door frame 13, the other end being adapted to apply a closing force to the door 15, and a tension spring 18 connected at 20 to the said other end of the arm and fixed permanently at 19 on the bracket 12. The arrangement is such that during the normal opening movement of the door, viz. 70 degrees to 100 degrees, the point 20 always lies on one side of a line joining the points 11 and 19, while the distance between the latter points is sufficiently small to ensure that, when the door is in the normally open position, the extension 21 of the spring is small compared with its length in the closed position.
Patent GB-315277-A (GB)
Title: Improvements relating to electric transformers
IPC: H01F38/28
Filed: 1929-07-10
Abstract: 315,277. British Thomson-Houston Co., Ltd., (Assignees of Wilson M. S.). July 10, 1928, [Convention date]. Transformers. - The ratio error in a current transformer is reduced by subdividing a part of the magnetic circuit into two parallel sections in which unequal flux densities are produced by means of an auxiliary winding embracing one of the sections, the flux densities in the two sections being such that one operates on that part of the permeability curve where permeability increases with flux density while the other section operates on that part of the permeability curve beyond the peak where permeability decreases with increased flux density. Division of the magnetic circuit may be made by perforating the core at one or more points 13. An auxiliary winding 16 in series with the main secondary winding 12 is placed around the smaller sections 15 to increase the flux density therein. Alternatively, increased flux density in the smaller sections 15 may be produced by placing the auxiliary winding on the larger sections 14 in such manner that it opposes the flux in the larger sections. Phase-angle error is reduced by providing a short-circuited winding 20 around one of the core sections.
Patent GB-1028697-A (GB)
Title: Shearing mechanisms
Inventor: RICHMOND WILLIAM JAMES
IPC: B23D25/12
Filed: 1963-05-28
Abstract: 1,028,697. Shearing. DAVY & UNITED ENGINEERING CO. Ltd. May 26, 1964 [May 28, 1963], No. 21276/63. Heading B3W. A shear comprises a pair of housings 29 between which upper and lower co-operating blade carrying drums 14, 12 are rotatably mounted, each housing being formed in two parts detachably secured together so that when the upper housing parts are removed the lower drum may be removed vertically. The drums are secured to shafts 36 rotatable in bearings 18 carried in chocks 22 supported in frames 27 forming lower parts of the housings 29 and in bearings 20 directly mounted in chocks 30 forming the upper part of the housing. Intermeshing gears 38, 40 on the shafts are driven by an electric motor and adjustable bearing assemblies 44, 46 are provided on the end of each shaft to facilitate alignment of the blade drums 12, 14. A feed shoot 58, Fig. 1 (not shown), conveys material to the drums and an arm 60, pivoted at 62, stops the passage of the material until the co-operating blades cut it and the severed portions pass into a disposal shoot 64. The drums may be driven by universal spindles extending from a stand adjacent the housings. One of the gears 38, 40 may be mounted on a sleeve which is keyed to a drum shaft 68, Fig. 3 (not shown), and has a worm-wheel 72 integral therewith which engages with a manually operable worm 74 mounted on the gear 38 to permit relative circumferential adjustment of the gear and hence the drum blades.
Patent GB-329895-A (GB)
Title: Improvements in vehicle wheels
IPC: B60B23/06
Filed: 1929-07-11
Abstract: 329,895. Kopp, F. July 11, 1929 Detachable-rim attachments to wheels; tyre attachments to rims.-A two-part rim h, i is clamped between flanges d on the spoke-heads b and lugs g on bolts f fitted in the spokes and engaging driving-recesses in the rim parts. The lugs g may engage the rim-part i directly, as in Figs. 1 and 2, or as shown in Fig. 6, plates p may be fitted between the parts g, i. The bolts may be locked by spring-pressed detents l.
Patent GB-631904-A (GB)
Title: Improvements in or relating to the manufacture of sliding clasp fasteners
IPC: B21D53/50
Filed: 1947-08-06
Abstract: 631,904. Sliding-clasp fasteners. LIGHTNING FASTENERS, Ltd. (Lightning Fastener Co., Ltd.). Aug. 6, 1947, No. 21356. [Class 44] [Also in Group XXII] In means for making sliding-clasp fasteners preformed wire stock is fed into the path of a shearing tool, travelling in a closed path, and severed, then fed to a stamping die and indented by a punch travelling with the die and finally fed to a mounting station where the fastener is secured to a tape. Shearing. Preformed wire 26 is fed through an apertured die in a table 48 by feed rolls 52, 54 and is severed by blades 34 on planet pinions 74, 76 mounted on a sleeve 64. A shaft 66 carries a sun pinion 68 which is rotated at a speed to maintain the position of the blades 34 constant. Fingers on the blades 34 grip the fastener members and deposit them in a carrier 20 rotated by a shaft 80. Stamping. The members are clamped to the carrier 20 by indenting tools 36 on arms 86 oscillated about a pivot 82 by a fixed cam 90. At the indenting station the projecting legs of the fastener are supported by a hold-up finger on a co-operating disc. Fig. 7, (not shown), and the arms 86 are further oscillated, to form the locking indentations.  The carrier 20 then feeds the member to a station at which it is secured to the tape. Feeding. Wire feed. Wire stock is fed by rolls 52, 54, the latter of which is intermittently rotated by an eccentric 58 and pawl 56. Tape feed. The tape is fed by a pawl 100 oscillated from the eccentric 58 and is guided by a member 42 which travels in an elliptical path, Fig. 7 (not shown). Attaching fasteners to tape. On a crank pin 110 on a shaft 108 is mounted an arm 112 guided at one end in a member 114. Resiliently mounted on the end of the arm is a tape guide 42 which sweeps past the indenting die and positions the tape on the fork of the fastener. Clinching arms 130 mounted on pivots 126 move in an elliptical path and are actuated at the limit of travel by a fixed pin 138 to effect clamping of the members on the tape.
Patent GB-438074-A (GB)
Title: Improvements in or relating to the driving gears of sheaf-binding harvesting machines
IPC: A01D69/06
Filed: 1934-07-23
Abstract: 438,074. Binding-machines. INTERNATIONAL HARVESTER CO. OF GREAT BRITAIN, Ltd., 259, City Road, London.- (International Harvester Co. ; 606, South Michigan Avenue, Chicago, U.S.A.) July 23, 1934, No. 21450. [Class 6 (iii)] The bevel gear 13 of the butting device 10 of a binding-machine, a bevel gear 23 driving it, which is mounted on the forward end of the " idler " roller 22, and the train of gearing 18-21, connecting the elevator rollers 14, 15, are enclosed in a housing 24. The housing is secured to the elevator frame and is provided with a hinged cover 25 secured at the top by a swing bolt 27. The wall of the housing is provided with a hole 29 sufficiently large to permit the insertion of the gear 13 which is packed by washers 30 to mesh properly with the gear 23.
Patent GB-1563551-A (GB)
Title: Electromagnetic radiation reactor combustion chamber
IPC: F24S23/00
Filed: 1977-05-20
Abstract: The energy converter has a housing (11), in which a reaction chamber (13) and a combustion chamber (15) are arranged. Concentrated solar radiation is conducted from a parabolic mirror (23) arranged above the reactor housing through a transparent solar glass (31) into the reaction chamber and there strikes a conical reflector (33) which distributes the radiation in the reaction chamber (13). Hydrogen and chlorine are guided in the molecular state via lines (19, 21) into the reaction chamber, in which the chlorine molecules disassociate to form atomic chlorine as a result of the radiation. Chlorine molecules and hydrogen molecules are, together with oxygen supplied via openings (37), guided into the combustion chamber (15), in which a controlled explosive reaction takes place to form hydrogen chloride. The reaction heat and the reaction pressure can be utilised for driving a turbine or a piston machine, it being possible to heat a medium in a duct (30) in the inside of the reactor. When this energy converter is used, fossil fuels can be forgone. Moreover, a complete cleaning of the combustion products arising is possible. <IMAGE>