baber/WOPTO huggingface dataset:
Patent GB-1342606-A (GB)
Title: Converters
IPC: H02M7/06
Filed: 1971-01-19
Abstract: 1342606 Controlling rectifiers; structural arrangement of rectifiers CONTROLLED POWER CORP 19 Jan 1971 [6 Feb 1970 (3)] 2701/71 Heading H2F [Also in Division G3] An A.C.-D.C. converter comprises a plurality of individual rectifying modules 34a, 34b, 34c each having a circuit breaker 36a, 36b, 36c on the A.C. side, each circuit breaker being arranged to trip in response to a fault associated with its respective rectifying module and A.C. controller 46 arranged to adjust the A.C. input to each module 34a ... 34c in response to the D.C. voltage or current. The modules comprise respective housings (Fig. 5) having fans to move air in a horizontal path through each module. The circuit breakers may have respective contacts 94a ... 94c arranged to adjust the output of controller 46 in dependence on the number of modules 34a ... 34c in circuit. As described, the three-phase supply 40 is fed via a common circuit breaker 44 to three pairs of anti-parallel thyristors (Fig. 3, not shown) forming the controller 46. The combined output of the rectifying modules is monitored at 188 and compared with a reference 74 and fed via a gate 72 to a firing circuit 58 so as to control the conduction angle of the thyristors in controller 46 and thus maintain constant output voltage. The output current is monitored at 80 and after comparison with a reference 98 is fed to the other input of gate 72. If the current input of gate 72 is greater than the voltage input, the current input takes control so that the system operates in a current limiting mode. Contacts 94a ... 94c are operated by respective circuit breakers 36a ... 36c so as to reduce the maximum current in dependence on the number of modules 34a ... 34c in use. Fig. 3 (not shown) relates to details of starting and tripping contactors and protection against faults due to cooling failure. Fig. 4 (not shown) relates to a transistor circuit suitable for details 74, 98, 62 and 72. Structural arrangement.-Fig. 1 (not shown) relates a casing for twenty one such modules arranged in three columns. Fig. 5, shows one of such modules and comprises a three-phase transformer having brackets 232 to which are bolted extruded sections forming the corners of the casing of a module. A bracket 254, at the rear of each module, supports two blower motors arranged to pass cooling air horizontally from the front to back of each module. Fig. 10 (not shown) relates to a similar module for low voltage operation and includes details of the heat sink for the rectifying diodes 260 which are bolted to bus bars forming the sides of each module.
Patent GB-917938-A (GB)
Title: Method and apparatus for injecting and trapping electrons in the magnetic field of athermonuclear reactor
IPC: H05H1/22
Filed: 1961-01-24
Abstract: 917,938. Thermonuclear apparatus; discharge apparatus. UNITED STATES ATOMIC ENERGY COMMISSION. Jan. 24, 1961 [Jan. 25, 1960], No. 2769/61. Classes 39 (1) and 39 (4). In apparatus for injecting and trapping electrons in a uniform intensity axially symmetrical magnetic containment field of a thermonuclear reactor, the electrons are injected tangentially into the field at a slight angle to a plane normal to the axis within a region of intensified field gradient to form a cylindrical electron bunch having an axial velocity and the axial kinetic energy is dissipated in a resistive circuit with which the cylindrical electron bunch interacts. In a nuclear fusion reactor having terminal magnetic mirror fields provided by coils 23, 24, 31 and 14, 16, an electron beam is injected within one mirror field through the tangential and also, with respect to the transverse plane, slightly inclined tube 38 with an axial as well as a tangential component of velocity to form the rotating cylindrical electron bunch 39. The dissipative circuits consists of a circular and linear array of resistors 28 mounted by brackets 27 on metallic strips 26. The field conditions are so chosen that the bunch 39 is maintained at a constant radius. The reactor may be one which utilizes toroidal fields or arcuate axially symmetric magnetic fields. Specifications 875,574 and 894,914 are referred to.
Patent GB-1087811-A (GB)
Title: Improvements in or relating to camera cathode ray tubes
Inventor: TURK WALTER ERNEST
IPC: H01J29/02
Filed: 1964-01-22
Abstract: 1,087,811. Television pick-up tubes. ENGLISH ELECTRIC VALVE CO. Ltd. Dec. 2, 1964 [Jan. 22, 1964], No. 2856/64. Heading H1D. In a television pick-up tube such as a vidicon or image orthicon a P.T.F.E. spacer is interposed between a glass membrane storage target and the target mesh, the spacer having a rectangular aperture to accommodate the " picture image." The glass membrane and the target mesh are secured in mounting rings with the spacer sandwiched between them, the whole assembly being held together by an outer U- shaped clamping ring. The target mesh is tensioned by an inwardly projecting flange of the clamping ring.
Patent GB-790638-A (GB)
Title: Improvements in or relating to stencilling apparatus
IPC: B31F7/02
Filed: 1955-02-01
Abstract: 790,638. Punching devices. HOLl\1ES, V. W. Feb. 1, 1956 [Feb. 1, 1955], No. 2933/55. Class 31 (2). [Also in Group XVI] A hand device or tool for cutting stencils having a wax or equivalent covering comprises a holder with a seating surface or surfaces for positioning on a supported stencil or stencil blank, and a die having stencil cutting formation in a plane and supported by a carrier which is accurately guided for limited displacement in the holder perpendicular to said seating surface and die plane, the carrier being arranged to operate by impact for cutting the stencil or blank. The tool 1, Fig. 1, rests on a supported stencil blank, and on depressing the head 9 of a plunger 5 sharply as with a hammer against the action of a spring 10, a steel die 7 carrying the design is pressed against the blank and forms the design therein. In another form, compression of the spring by hand causes a spring-loaded hammer element within the plunger to be tripped to strike and depress the die. The tool illustrated in Fig. 1 may be operated by a hammer device, Fig. 4, comprising a hammer rod 24 secured to a helical cam member 25 urged downwardly against a similar member 26 by a spring 20 the tension of which is adjustable by a screw 22 settable by a hand wheel 35. On rotation of the member 25, by an arm 32 extending through a slot 33, until step portions 27, 28 of the members 25, 26 are aligned, the rod 24 moves down sharply to strike the head 9, Fig. 1. The members 25, 26 are re-set by the arm 32 and a knurled disc 37 respectively.
Patent GB-190934-A (GB)
Title: Improvements in or relating to electric transformers
IPC: H01F38/08
Filed: 1922-02-01
Abstract: 190,934. English Electric Co., Ltd., Howard, J. W., and Richardson, J. A. St. C. Feb. 1, 1922. Polyphase transformers.-In a polyphase transformer in which magnetic masses 10 are inserted between the primary and secondary windings to increase the reactance, the yokes 11 of the transformer core are provided with magnetic extensions 14 which embrace the projecting ends of the windings and the magnetic masses on the outer limbs of the core in order to produce symmetrical leakage conditions for all the phases. The laminations forming the yokes may be stamped out with integral extensions, or separate extensionsmay be bolted or otherwise secured to the yokes.
Patent GB-1386321-A (GB)
Title: Multistage switching network
IPC: H04Q3/00
Filed: 1972-01-21
Abstract: 1386321 Automatic exchange systems PLESSEY CO Ltd 10 Jan 1973 [21 Jan 1972] 2981/72 Heading H4K In order to enable a switching network comprising cascaded stages of switching matrices to be extended easily by the addition of at least one matrix to each of two successive stages, the links between those stages are initially arranged with the extended network in mind so that some links extend to vacant matrix locations and these latter links have their free ends connected temporarily to existing matrices of the appropriate stage. In order to extend appropriate additional matrices are plugged into vacant locations and no longer required ones of the connections are severed or removed. As described a three stage sealed reed relay switching network when fully built up has the "C" stage matrices divided into four sections, each associated with a pair of concentration networks, each formed of A and B stage matrices as indicated in Fig. 1. The network can be installed one section at a time the complete B C interstage links being installed at the initial stage. Those links which lead to vacant C stage matrix locations are wired to appropriate inputs of existing C stage matrices, which inputs will in the complete network connect to not yet provided B stage switches. The wires are in three sets each set being insulated in a different colour for easy identification. To extend from one section to two, the appropriate concentrators and C stage matrices for the new section are plugged into place and one set of wires are cut or removed. The network may be further extended in similar manner. A single matrix equivalent to the Fig. 1 arrangement but with built in irregular linking between the A and B stage crosspoints to reduce blocking is also disclosed.
Patent GB-1280160-A (GB)
Title: Milk flow indicator
Inventor: DYKE EDWARD
IPC: A01J7/00
Filed: 1968-07-11
Abstract: 1280160 Indicating fluid-flow GASCOIGNES (RESEARCH & DEVELOPMENT) Ltd 7 July 1969 [11 July 1968] 33213/68 and 2986/69 Heading G1R In a milk flow indicating device milk from a milking cluster enters the indicator through tubes 2, 8 and over a domed spreader 11 into an annular space 12 formed between a transparent glass tube 5 and metering tube stem 10 and the arrangement is such that if the rate of flow of milk is above 1/3 lbs per minute the milk will flow above the top edge 17 and/or holes 15, 14 and 13 in the wall of the tube stem 10, decreasing in diameter progressively as the holes near the lower end of the stem 10, into a pipe line 4 but if the flow falls below a 1/3 lb per minute the milk level will fall below a sensing probe 16 to actuate a visual and/or audible warning signal 18. In an alternative embodiment V-shaped notches replace holes 15, 14 and 13, Fig.4 (not shown).
Patent GB-280407-A (GB)
Title: Improvements in or relating to apparatus for mixing powder with liquid
IPC: B01F5/04
Filed: 1926-09-01
Abstract: 280,407. Foamite Firefoam, Ltd., (Foamite-Chidds Corporation). Sept. 1, 1926. Mixing solids with fluids in flow. - In an apparatus for mixing powder with liquid for the purpose of producing a fire-extinguishing foam, of the kind comprising a conduit for conveying a stream of the liquid and a receptacle for the powder in communication with the conduit, the communication, through which the powder is sucked, is provided with a check valve. The apparatus is similar to that described in Specification 280,313 and comprises a conduit 1 fitted with a Venturi tube communicating by a passage 8 with the power receptable 11 fitting in a mouth 16. The valve 14, mounted in a casing 15, is faced with rubber and the seating 19 is furnished with a rim 23, or vice versa. The conduit is furnished with a guide 22 as described in Specification 280,408.
Patent GB-122932-A (GB)
Title: Improvements relating to the Production of Milling Cutters.
Inventor: HIGGINSON JOSEPH
IPC: B23P15/34
Filed: 1918-02-20
Abstract: 122,932. Higginson, J., and Arundel, H. Feb. 20, 1918. Milling screws.-Relates to the production of thread-milling cutters and consists in means for giving the work-spindle axial and rotary movement independent of the main rotation given to the spindle and in means for compensating the variations produced in the work by the subsequent heat treatment. As shown in Fig. 1, the work piece c is carried by a spindle a which is rotated by a worm-wheel e, by means of a straight feather when the flutes in the cutter are straight and by an inclined feather d when the flutes are inclined. On the reduced end of the spindle is loosely mounted a screwed sleeve f in gear with a fixed nut g and carrying a toothed disk i gearing with a pinion h rotatable by a hand disk k. After the work-piece has made a revolution, a pin x in the worm-wheel rocks the lever q and drops the wormbox s so that the spindle comes to rest. The knock-off mechanism is similar to that described in Specification 104,281. The spindle is then fed forward by rotating the disk k by the handle j, and it is at the same time rotated if desired by the inclined feather d. Further axial movement can be given to the spindle to compensate for the heat treatment by rotating the hand-wheel through a small angle equal to the distance between two or more holes and locking it by the spring-pressed stud in the arm o secured to the spindle p.
Patent GB-1028526-A (GB)
Title: Tubular fabric and the method of and apparatus for producing the same
Inventor: GEIPEL UDO
IPC: D04B1/00
Filed: 1964-01-24
Abstract: 1,028,526. Knitting. PASOLDS Ltd. Oct. 20, 1964 [Jan. 24, 1964], No. 3119/64. Heading D1K. A two-ply fabric made on a cylinder and dial machine has one ply knitted with more courses and wales than the other is illustrated. A loop of yarn from one layer extends at intervals around the yarn of the other layer to secure the layers together. The yarns of the two layers are of different material and structure.
Patent GB-872470-A (GB)
Title: Improvements in or relating to electrical programming for angularly positioning shafts
IPC: G05B19/27
Filed: 1957-08-20
Abstract: 872,470. Programmed electric control systems. WARNER & SWASEY CO. Aug. 20, 1957 [Aug. 21, 1956], No. 3120/61. Divided out of 872,469. Drawings to Specification. Class 38 (6). [Also in Group XIX] The subject-matter of this Specification is identical with part of that described in Specification 872,469 but the claims are concerned with programming apparatus for controlling the angular position of a shaft. Specification 662,073 also is referred to.
Patent GB-718728-A (GB)
Title: Improvements relating to dynamo-electric machines
IPC: H02K7/12
Filed: 1952-02-06
Abstract: 718,728. Dynamo - electric machines. SELECTRA, Ltd., and KREBS, E. W. Feb. 6, 1953 [Feb. 6, 1952], No. 3136/52. Class 35 The air-gap surfaces of the stator and rotor are peripherally grooved so that, in operation, the rotor experiences an increased axial centering force. In the D.C. motor shown, the axial movement of the armature on energization, is used to engage a clutch 16, the pole faces 13 having grooves 19 and the armature periphery having grooves 18, some of which may carry binding wires. An induction motor in which the rotor movement is used to operate a brake is described, and it is stated that the axial force provided by the rotor may alternatively be used for taking up end-thrust on the shaft or for supporting the rotor weight. If a thrust is required in one direction only the slots may be unsymmetrical, e.g. triangular or trapezoidal. The invention is also applicable to salient pole machines.
Patent GB-582619-A (GB)
Title: Improvements in or relating to fuel injection devices for internal combustion prime movers
IPC: F02M61/06
Filed: 1942-03-10
Abstract: 582,619. Fuel injectors. VICKERS-ARMSTRONGS, Ltd., and DAVIES, E. March 10, 1942, No. 3167. [Class 7 (iii)] The injection valve 3 with conical seating 4 and spraying nozzle 2, is of the kind having a cylindrical extension 6 operating in a larger cylindrical bore 7, so that when the valve is partly opened for the primary injection, an annular space 8 is formed through which the fuel has to pass, the arrangement being such that the extension 6 will always remain within the bore 7 during primary injection, whatever variations may occur in temperature, or in the wear of the valve gear, so that the amount of fuel injected remains the same. When the valve is fully opened for the main injection, the extension 6 is withdrawn from the bore 7. The valve is actuated by a cam or cams lifting the valve off its seat during primary injection, closing the valve, and lifting it to a greater extent during main injection; a single cam with two lifting surfaces may be employed. The quantity of fuel is controlled by varying the pressure of the fuel caused by one or more pumps supplying the valve through a high-pressure storage line or reservoir. The primary injection may be suppressed at low powers by sliding the primary cam out of action, or by increasing the clearance between the cam and push rod.
Patent GB-897216-A (GB)
Title: Improvements in and relating to bus-bar earthing arrangements
Inventor: SINGLETON JOHN EDWARD PETER
IPC: H02B11/28
Filed: 1958-01-30
Abstract: 897,216. Switch-gear structures. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Dec. 31, 1958 [Jan. 30, 1958], No. 3177/58. Class 38 (5).  A circuit-breaker 1 is connected to busbars 26 by a terminal 3 and isolator 5, and to a cable 15 by a terminal 4, isolator 6, and conductors 7, 16, the conductor 7 having an extension 7a co-operating with an earthed knife-blade 10. The bus-bars 26 may be earthed by opening and (preferably) isolating the breaker 1, closing the switch blade 10 and then reclosing the breaker 1. The earth switch may be locked in its open and closed positions or may be interlocked with the circuit-breaker mechanism.
Patent GB-726435-A (GB)
Title: Improvements in and relating to gain control in high frequency electrical pulse receiving systems
IPC: G01S7/34
Filed: 1953-02-05
Abstract: 726,435. Pulse radar. BRITISH THOMSONHOUSTON CO., Ltd. Feb. 5, 1953 [Feb. 15, 1952], No. 3275/53. Class 40 (7). The gains of the channels of a multi-channel radar receiver are equalized by a conventional A.G.C. system and by a further gain control system operating in dependence upon false echoes generated at the receiver and controlled by the false echo output of one channel such that they are equal in level at that point to the desired echoes. The Figure shows a radar system comprising a transmitter 1, 2, 3 and four receivers A, B, C and D (only A and B being shown), the gains of B, C and D being controlled by the invention to have the same gain as A. The transmitter comprises a pulse generator 1 which modulates an oscillator 3 connected to an aerial 4. Each receiver comprises an aerial 9, a mixer 11 connected to a local oscillator 5, an I.F. amplifier 12 and a detector 13. The output of the detector is fed to a gate 14 which passes echo pulses from a selected target only and these pulses are passed to the receiver output. The selected pulse output of channel A is also fed to a conventional A.G.C. circuit 15 controlling the I.F. amplifiers. An output from the local oscillator is mixed in a circuit 25 with the output from an auxiliary oscillator 20 operating at the I.F. frequency so that a control signal of frequency equal to that of the transmitter is produced, and the auxiliary oscillator is brought into operation during the flyback periods of the radar display by a pulse generator 22 so that false echo pulses are produced during this period. A gate 23 fed from the receiver A opens on the occurrence of the pulses and feeds the false echo output to a control mechanism 26, 27 which adjusts an attenuator 24 to make the false echo output of receiver A equal to the echo from the selected target. The gates 23 in the A.G.C. circuits of the receivers B, C and D are opened by the pulse generator at such a time that they pass only the false echoes and the gain of these receivers accordingly are automatically adjusted to equal that of receiver A.
Patent GB-128523-A (GB)
Title: Improvements in and relating to Golf Cups.
Inventor: AUSTIN FRANK FREEMAN
IPC: A63B57/00
Filed: 1919-02-11
Abstract: 128,523. Austin, F. F. Feb. 11, 1919. Golf-practising appliances.-A device for practising putting or for use in playing indoor golf comprises a rimmed base 11 and a central standard carrying two horizontal disks 14, 16. The disk 14 is constructed of flexible material such as hardened paper or fibre, and is clamped beneath the disk 16 by means of a rubber ring 15. A rub. ber ring 3 encircles the central standard. By adding or taking away washers 24, the space between the base 10 and the disk 14 may be adjusted. Others washers 25 permit the pressure on the rubber ring 15 to be adjusted so as to vary the resiliency of the disk 14. A successfullydriven ball is retained by the frictional contact of the disk 14 in the manner shown.
Patent GB-1410832-A (GB)
Title: Process for continuous polymer preparation
IPC: C08F2/18
Filed: 1973-01-23
Abstract: 1410832 Continuous suspension polymerization SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ BV 21 Jan 1974 [23 Jan 1973] 3382/73 Heading C3P A process for continuous suspension polymerization comprises introducing monomer-containing droplets into a vessel containing a liquid suspension medium by way of one or more nozzles, continuously supplying and withdrawing suspension liquid from the vessel, and separating beads enriched in polymer, the nozzles and surrounding liquid being kept in vibrating motion with respect to each other at a frequency determined by wherein p is the density of the monomercontaining liquid introduced, A is the amplitude of vibration, V is the volume-throughput per nozzle of the liquid introduced, d n  is the diameter of the nozzle and # is the interfacial tension. The monomer may be styrene, methyl methacrylate or vinyl acetate, or a mixture of acrylonitrile, butadiene and styrene; and the medium may be water optionally containing suspension stabilizers, e.g. polyvinyl alcohol, polyvinyl pyrrolidone, cellulose derivatives and bentonite. The monomer may contain prepolymer, a rubber or a foaming agent, e.g. pentane. The separated beads may be passed to a further reactor at higher temperature to complete the polymerization, e.g. continuously in a tube reactor or as a batch operation in a stirred reactor. In an example styrene containing dissolved benzoyl peroxide and t-butyl perbenzoate is dispersed and polymerized in an aqueous medium containing polyvinyl alcohol under such conditions that the expression has a value of 0.53.
Patent GB-1176202-A (GB)
Title: Improvement in the Remote Guidance of Self-Propelled Missiles
IPC: F42B15/04
Filed: 1967-01-23
Abstract: 1,176,202. Infrared filters. SOC ANON DE TELECOMMUNICATIONS. Jan.23, 1967 [Jan.27, 1966], No.3412/67. Heading G2J. [Also in Division H4] A guided missile is required to reflect a part only (e.g. 1À8 to 2À6 microns) of the spectrum of incident infrared radiation (see Division H4); the missile carries combined reflecting and filtering means which may be a reflector 6a Fig. 6 having a prismatic surface 10 and a thin plate 7a of organic material: the latter may have a surface complementary to, and directed toward, surface 10. Other forms are shown in Figs. 8, 9 and 10. Materials mentioned are aluminium, glass, and germanium. A material may be chosen to perform both functions Fig. 7 (not shown).