baber/WOPTO huggingface dataset:
Patent GB-1404520-A (GB)
IPC: G21C17/07
Filed: 1973-06-05
Abstract: 1404520 Testing nuclear fuel COMMISSARIAT A L'ENERGIE ATOMIQUE 5 June 1973 [7 June 1972] 26909/73 Heading G6C The proportion of broken particles in a nuclear fuel compact comprising coated particles of fissile material in a graphite matrix is determined by exposing the compact to a neutron flux together with a reference compact containing a known number of uncoated fissile material particles, and comparing the amounts of fission product gases given off from the compacts. The gases may be removed by means of a vacuum or a stream of helium, trapped, and analysed by gamma-spectrography.
Patent GB-822419-A (GB)
Title: Recording apparatus
Filed: 1957-08-27
Abstract: 822,419. Recording-apparatus. SHEFFIELD CORPORATION. Aug. 27, 1957 [Sept. 4, 1956], No. 26974/57. Class 106 (4). A portable recording-unit comprises a compactly arranged series of solenoids 65, 66 for moving styli 69, 70 into contact with a pressure sensitive strip 27 fed at constant speed past the styli and a multiple plug 94 or socket 91 for connecting the solenoids each to one of a plurality of periodically energized signal sources to enable the styli to record the periods of energization. In using the unit for recording the durations of inter-related movements or operations in a machine tool, a cable 95, Fig. 5, interconnects the unit and machine so that, when a switch 97 is closed, alternating current is supplied over lines 81, 82 to a motor 40, to drive the strip 27 at constant speed through reduction gearing, sprocket 45, chain 47 and drive roll 34. Meanwhile, during the periodic energization of relays in the machine during the various operations, alternating current of the same frequency is passed over line 81 and appropriate lines 83 to 88 to corresponding solenoids 65, 66. Each of the styli 69, 70 is pivoted and urged away from the roll 34 by a spring 71 which is overcome twice in each cycle by the fluctuating magnetic field of its solenoid, while supplied with the alternating current, so that each pressing of the stylus on the strip causes a dot or dash 72 to be imprinted thereon. To facilitate the estimation of the time periods thus recorded, a calibrating roll 35 with three equispaced projections is urged with adjustable pressure against the drive roll 34 and in rotating imprints regularly spaced calibration marks 64 on the strip. Both rolls 34, 35 have rubber coatings to avoid marking the strip during drive and to ensure a steady grip. The housing of the unit comprises side walls 11, integral with the base 14 and formed with upwardly extending arms 16 to receive a handle. It is closed by a rear plate carrying the motor 40 and has a hinged front cover allowing ready access to the roll of pressure-sensitive strip 27 on conical bearings, one mounted on a leaf-spring to provide sufficient frictional drag to keep the strip taut. The cover has a slot, through which the strip passes after recording, with a sharp edge for cutting the strip.
Patent GB-976992-A (GB)
Title: Charging and discharging circuit for ventricular defibrillator
IPC: A61N1/39
Filed: 1962-07-13
Abstract: 976,992. Electro-medical appliances. MINE SAFETY APPLIANCES CO. July 13, 1962 [June 25, 1962], No. 27003/62. Heading A5R. [Also in Division H2] A ventricular defibrillator of the type in which two capacitors are charged in parallel and then discharged sequentially to produce current pulses of opposite polarity through the patient's body, comprises capacitors C1, C2 permanently connected through high resistances R1, R2 to a high voltage D.C. source 3 which may be derived by transforming and rectifying A.C. or by converting low voltage D.C. The discharge circuit includes a choke 37, a momentary contact switch 21 generally similar to that of Specification 976,993 and two electrodes E1, E2 generally similar to that of Specification 976,994. In operation, capacitors C1, C2 are charged until an indication is given by a light 11 after which the switch 21 is cocked by moving an insulating rod 23 against the action of a spring motor 34 until two contact-carrying plungers 24, 26 are engaged by a locking pin 28, in which position a circuit is completed through contacts 32, 24, 33 to energize a light 29 and indicate the " switch cocked " condition. Each electrode E1, E2 comprises two switches S1, S2 vhich are normally open due to the action of a spring (not shown) on a contact surface 41 connected to the switch S1 and engageable with the patient's body X. Upon application of the electrodes E1, E2 to the patient, switches S1, S2 are closed in this order and the switches S2 complete the energizing circuit of a solenoid 43, thus releasing the switch 21 from its cocked position. Subsequent movement of the plungers 24, 26 to bridge the pairs of contacts AA<SP>1</SP>, BB<SP>1</SP>, and CC<SP>1</SP>, DD<SP>1</SP> allows the capacitors C1, C2 to discharge sequentially, the connections providing pulses of opposite polarity, Fig. 2 (not shown). In a modification, Fig. 3 (not shown) the choke 37 is connected between the negative terminals of the capacitors and has a centre tap connected to the contacts B, C. Alternatively the coil may be connected between contacts B, C with its centre tap connected to the capacitor negative terminals. The capacitors may be discharged through a resistor 14 by means of a switch 13. The merits of the circuit shown in Fig. 1, compared with known circuit arrangements, are discussed.
Patent GB-272092-A (GB)
Title: Improvements in or relating to gas analysis apparatus
IPC: G01N7/08
Filed: 1926-10-28
Abstract: 272,092. Levinsohn, S. S. Oct. 28, 1926. Gas analysis. - Apparatus suitable for the analysis of combustible and flue gases comprises a filter 25, absorption vessels 12, a gas-measuring tube 1, means for leading the gas through a heated tube 11 for combustion and for cooling it subsequently, the apparatus being connected by a pipe 19 and three-way cocks 18, 20, 21. The filtering material is contained in an enlargement of the tube 25, through the side of which passes an inlet pipe dipping into water at the bottom of the filter. Into the upper end of the filter is fitted a three-wav tube, the two other branches of which lead to a suction bellows or the like and to the distributing tube 19. Each of these branches, or only the one leading to the bellows, contains a valve of the bicycle-tyre type, so that before a new sample is drawn into the apparatus the filter and tubes leading to the flue &c. can be flushed out with the gas to be analyzed by working the bellows &c. The measuring tube 1 opens at its upper end into a capillary 2 having one branch leading directly to the atmosphere through a cock 3 and another branch leading to the three-way cock 20 so that the sample can be drawn in through the tube 19 by lowering the level vessel 4, or forced into one of the absorption vessels 12 and drawn back again, or, after admixture of oxygen or air for combustion, passed to and fro through the heated tube 11 connecting the measuring tube 1 with a narrow bell 6 surrounding it. Projections on the bell space it apart from an outer tube 7 for the reception of the liquid expelled from the bell by the gas sample and serving also to cool the gas. At their lower ends the measuring tube 1 and outer tube 7 are ccned so as to clamp between them the end of the flexible tube leading to the level vessel 4. A benzine burner 33 is employed for heating the tube 11. Each absorption vessel comprises an upper chamber having an open extension 12a depending into a lower chamber 12b and constricted at intervals to promote admixture of the liquid with the gas, which enters by way of a tube 16 and displaces the liquid from the upper chamber into a rubber bag 17. When the gas is to be withdrawn again, the three-way cock 21 is turned so that the gas is conveyed by a tube 13, flared at its lower end and, if a foaming reagent is used, provided with a small pocket to form a trap. The handles of the threeway cocks 21 are milled at their edges and provided with grooves to indicate the direction of flow. The parts of the apparatus are held by clips attached to a bar of rectangular section, the combustion tube 11 being, however, mounted in rubber plugs in a wooden block 40. A wooden box enclosing the apparatus has a front board which, when lowered for access to the apparatus, also serves as a desk.
Patent GB-1306419-A (GB)
Title: Feed regulator for fibrous material
IPC: D01G23/00
Filed: 1970-06-05
Abstract: 1306419 Automatic control of weight H HERGETH [trading as HERGETH KG MASCHINENFABRIK UND APPARATEBAU 5 June 1970 [11 July 1969] 27169/70 Heading G3R [Also in Division D1] The rate of fibre feed to a processing machine is regulated by maintaining a constant weight of fibres in a supply container. The container is limited on one side by a roller 4, admitting to the container and on the other side by a lifting conveyer for removing fibres from the container. The base of the container forms one arm of a pivoted balance 6, 7. The other arm incorporates a balance weight 10 for urging the base 6 against a stop and is arranged, upon movement thereof, to operate a control 12 for the feed device 2 feeding fibres into the container. The control 12 can be electrically, photo-electrically or ultrasonically operated.
Patent GB-1380340-A (GB)
Title: Method of producing rings for ring type spinning or twisting machines
IPC: D01H7/60
Filed: 1972-06-09
Abstract: 1380340 Making traveller rings W REINERS and H J FURST [trading as REINERS & FURST] 9 June 1972 [11 June 1971] 27195/72 Heading B3A In a method of making rings of sintered metal for ring-type spinning or twisting machines, following final mechanical machining, e.g. turning, grinding or polishing, at least a part of the ring surface is removed electrochemically. Preferably the metal is removed from those surfaces which come into contact with the ring traveller, but the whole of the ring surface may be electrochemically treated. The removal of metal in this way opens up the pores in the sintered metal, which are more or less obliterated during the mechanical machining, thereby forming lubrication pockets in the surface.
Patent GB-903026-A (GB)
Title: Treatment of germanium semiconductor devices
IPC: H01L21/30
Filed: 1959-08-10
Abstract: 903,026. Semi-conductor devices. CLEVITE CORPORATION. Aug. 10, 1959 [Aug. 19, 1958], No. 27238/59. Class 37. A method of treating a germanium PN semi-conductor device complete with electrodes comprises etching its surface, rinsing, and then immersing it in an aqueous solution containing at least 5% by weight hydrogen peroxide. Suitable temperatures for the solution are from 50 C. to the boiling point, 105 C., the treatment time varying with solution concentration and temperature. In a preferred embodiment an alloy,junction transistor is first electrolytically etched, rinsed in de-ionized water, and then immersed for 2 minutes in a 35% aqueous solution of hydrogen peroxide maintained at its boiling point. After rinsing in de-ionized water the device is encapsulated. The treatment is said to reduce the saturation current of PN junctions in diodes and transistors and to increase the current and power gain of transistors.
Patent GB-819477-A (GB)
Title: Improvements in or relating to electric plug-and-socket adaptors
IPC: H01R31/02
Filed: 1955-09-24
Abstract: 819,477. Two-part couplings. WARD & GOLDSTONE Ltd., and COUYOUNDJIAN, A. O. Nov. 29, 1956 [Sept. 24, 1955], No. 27272/55. Class 38 (1). A shuttered 5 amp. adaptor comprises three resilient metal stampings 19, 20, 21 located by the securing screws 15, 16, 18 of pins 13, 14, 17 respectively, each stamping providing at its free end socket contacts 19a, 20a, 21a situated behind holes in the cover 22. Sockets 29, 30 behind holes on both sides of the adaptor are formed at the ends of mutually reversed stampings 31 engaged by stampings 19, 20 and screws 15, 16, sockets 29, 30 being preferably separated by an insulating plate 32, the earthing sockets being formed by half-sockets 33, formed at the ends of a stamping 34 secured to the body 10 by a screw 18, and by V-shaped blades 36 formed at the ends of a resilient stamping 35 also secured by screw 18. An insulating shutter 38 is biased by a blade 39 formed at the end of a further resilient stamping 40 also secured by screw 18, the shutter fulcrumming about a projection 38a, a shutter lying in slots 37 in the body 10 parallel to each side of the adaptor covering sockets 29, 30. The shutter has a projection 38d engaging blade 36 of the earthing socket, so that the shutter is actuated by the earth pin of an inserted plug. A projection 41 from the adaptor body 10 separates sockets 19a, 20a and locates stampings 35 and 40. The adaptor cover 22 contains a shutter 42 biased to cover sockets 19a, 20a, 21a by a spring 43 and rotatable about a bush 44, a screw 46 passing through clearance holes 47 in stampings 34, 35, 40 to hold the adaptor in assembled position. Another embodiment (Figs. 7-8, not shown) describes a 15- and 5-amp. adaptor, but in which the adaptor body and cover are moulded to an approximately equilateral triangular shape in front view. It is stated in the Provisional Specification that the shutters may be omitted.
Patent GB-242632-A (GB)
Title: Improvements in and relating to electrolytic cells
IPC: H02G3/18
Filed: 1925-10-30
Abstract: 242,632. British Thomson-Houston Co., Ltd., (Assignees of Brinton, H. G.). Nov. 10, 1924, [Convention date]. Liquid resistances.-Difficulties introduced by pitting of the positive electrodes in electrolytic protective devices, such as surge absorbers, are minimized by arranging a positive electrode, having an insulating film on each side, between two negative electrodes. In the protective device described two such groups 7 are connected in series, and a number of pairs of groups are arranged in parallel between bus-bars 14, 15 connected respectively to an insulated terminal and the tank enclosing the device.
Patent GB-1362609-A (GB)
Title: Oscillatory to rotary motion transformer for use in timepieces
IPC: G04C3/10
Filed: 1972-06-12
Abstract: 1362609 Clocks and watches OMEGA LOUIS BRANDT & FRERE SA 12 June 1972 [14 June 1971] 27315/72 Heading G3T [Also in Division F2] In a motion converter for mounting on an oscillatory member in a timepiece and comprising an enclosure 17 containing a loosely mounted ratchet wheel 3 which is advanced by co-operation with pawls 5, 8 owing to the wheel's inertia, the enclosure cavity 19 is filled with a liquid and is connected by a capillary passage 35 to an expansion chamber 37 which is also filled apart from a gas bubble 43. As the ambient temperature rises, the liquid which is a light lubricating oil can expand by compressing the gas bubble. Channels 13 contain stops 11, 12 to limit the oscillatory motion of the ratchet wheel which is made of Pt Co alloy and magnetized to drive a gear mounted outside the enclosure 17. Top and bottom plates 16, 14 are of jewel stone such as ruby and the wheel 3 carries four supports 20 of ruby or tungsten carbide. The expansion chamber 37 is closed by a cemented slip 41 also of ruby. The use of a single pawl to advance the ratchet wheel is envisaged, together with a means for ensuring unidirectional rotation. Magnetic attraction by the external gear normally holds the ratchet wheel 3 against the base-plate 14, but axial displacement as a result of shock is limited by a ruby disc 18.
Patent GB-1600380-A (GB)
Title: Electric motors
IPC: H02K41/03
Filed: 1977-06-30
Abstract: The electric motor includes a stator (1) having a plurality of poles (5A,5B) whose pole faces are spaced apart in the direction of displacement of a moving armature (7) made of a magnetic material. At least one coil (12) is wound on the stator (1) and is arranged so that, when it is energised by an alternating current, the pole faces (6) have the same polarity and so that the flux density of the pole faces (6) varies in an alternating manner, without changing polarity, on either side of a mean value, so as to bring about the displacement of the armature (7) with respect to the stator (1). Application to the construction of high-efficiency self-starting electric motors used for the rotary driving of instruments. <IMAGE>
Patent GB-1043865-A (GB)
Title: Improvements in and relating to internal combustion engines
IPC: F02D9/04
Filed: 1963-07-11
Abstract: 1,043,865. Regulating. M. G. MAY. July 11, 1963 [July 12,1962; Jan. 30, 1963], No. 27548/63. Heading FIB. An exhaust throttle valve of a spark-ignition engine is closed at idling and low loads. In Fig. 1 the exhaust throttle comprises an eccentrically pivoted spring-loaded plate 36 which is opened by the flow of exhaust gases, the strength of spring 19 being adjusted so that the valve closes at idling. The closed position is determined by an adjustable stop 74 which may be magnetic and attracts a block 75 attached by a leaf spring to the valve spindle 17 when the valve is nearly closed to hold the valve firmly closed. The spring 19 acts through a lever 16 on spindle 17 and its moment decreases as the valve opens. A portion of the valve may be formed by a bimetallic strip 40 which bends in the opening direction as the temperature of the exhaust gases increases. In Fig. 3 (not shown) the exhaust throttle 57 is urged open by the flow of exhaust gases and is urged closed by intake manifold suction acting in chamber 52 on diaphragm 53. Ports 59 permit a small flow of exhaust gases when the valve 57 is closed. In Fig. 7 (not shown) the valve 104 is urged open by the flow of exhaust gases and is closed by intake manifold suction acting on diaphragm 124 connected to the valve lever 108 through a spring 121. The valve is positively opened at loads above low load by a link 131 connected to the accelerator lever 130 and engaging a lost-motion slot 134 in lever 108. A magnet 202 co-operates with lever 108 to hold the valve closed. In Fig. 9 (not shown) the valve 104 is urged closed by an electromagnet 172 the force of which is controlled by a switch 170 controlled by the accelerator pedal. Above a predetermined load, the current in coil 172 is reversed to urge the valve in the opening direction.
Patent GB-216048-A (GB)
Title: Improvements in or relating to roller grinding mills
IPC: B02C4/42
Filed: 1923-11-02
Abstract: 216,048. Marchant, A. G., and Marchant Bros., Ltd. Nov. 2, 1923. Roller mills.-Relates to triple roller mills of the type in which the adjustable rollers are provided with sprocket wheels which are chain-connected with sprocket wheels on fixed lay shafts, one for each roller. The fixed lay-shaft carrying the driving chain sprocket of the adjustable roller is positioned to lie on, or slightly to the outside of, a line drawn at rightangles to the path of movement for adjustment of the roller and passing through the axis of the roller when in its normal position before adjustment for wear has taken place, means being provided for taking up the initial slack of the chain and for paying it out at will to allow for adjustment of the roller as wear takes place. The central driving-shaft 5 carries a pinion 6 which gears with wheels 7, 8, the wheel 7 being fast on the spindle of the fixed central roller 9 while the wheel 8 is fast with a pinion 10 and rotates on a fixed lay-shaft 11. The wheels 8. 10 mesh with wheels 12, 14 on fixed lay-shafts 13, 15 respectively, and the wheels 12, 14 are fast with sprocket wheels 16, 17 respectively. Sprocket wheels 20, 21 on the spindles of the adjustable rollers 22, 23 are driven by chains 18, 19 from the wheels 16, 17 respectively. Adjustably-mounted jockey-wheels 28, 29 are provided for adjusting the tensions of the chains 18, 19. Each wheel may be mounted on an eccentric boss 30 on a spindle 31 provided with an operating-handle 32 which is locked in position by riieans of a pin 33 on the handle engaging one of a series of holes in a quadrant 34. In a modification, the central roller 9 is chain driven.
Patent GB-437993-A (GB)
Title: Improvements in or relating to adjustable-pitch airscrews
IPC: B64C11/06
Filed: 1934-09-26
Abstract: 437,993. Air-screws. BRISTOL AEROPLANE CO., Ltd., FEDDEN, A. H. R., and BUTLER, L. F. G., Filton House, Bristol. Sept. 26, 1934, No. 27630. [Class 114] The blade and hub socket of an air screw are each formed with a series of holes 17, 18 spaced around the blade axis and extending length-wise of the blade, the two sets of holes being in vernier relationship, and adapted to take a dowel for the purpose of setting the blade to the required pitch whilst the retaining nut 15 is screwed on to the hub socket 11. For locking the nut 15 in position a plate 26 is splined to the hub and provided with serrations which engage corresponding serrations 28 on the nut. The plate 26 is held in place by a spring ring 33 sitting in a groove in the hub. Specification 403,163 is referred to.
Patent GB-533131-A (GB)
Title: Improvements in or relating to magnetic shunts and shunt assemblies
IPC: G01R11/36
Filed: 1939-10-12
Abstract: 533,131. Supply meters. WESTING- HOUSE ELECTRIC INTERNATIONAL CO. Oct. 12, 1939, No. 27708. Convention date, Oct. 12, 1938. [Class 37] The polar projections 9, Fig. 1, that carry the magnetic shunt 7 are made as independent extensions which may be inserted in place after the current windings 5 have been applied to the current poles 3. The shunt assembly may be made from a laminated stock constructed of a non-magnetic intermediate layer 10, Fig 2, such as brass and two outer layers 11, 12 of iron or other magnetic material. These layers are silver soldered, brazed or roll welded together, or may be joined by riveting or clamping. A number of shunt assemblies are punched or cut from the laminated sheet. The magnetic shunt 7 is formed from the top layer 11 and may comprise two sections 7a, 7b as described in Specification 527,539. The intermediate layer 10 forms the non-magnetic spacer 8, Fig. 1, and the magnetic extensions 9 are machined from the bottom layer 12. The extensions 9 are mounted in notches in the poles 3 after the windings 5 are in place. Specification 508,133 also is referred to. The Specification as open to inspection under Sect. 91 (4) describes also a modification in which the magnetic extensions 9 are integral with the current poles 3. The shunt assembly is constructed of only the two layers 10, 11 and consists of the shunt sections 7a, 7b and the non-magnetic spacer 8. This subject-matter does not appear in the Specification as accepted.
Patent GB-773767-A (GB)
Title: Improved servo unit for fluid-pressure assisted hydraulic brake mechanism
IPC: B60T13/24
Filed: 1955-09-29
Abstract: 773,767. Hydraulic brakes. GENERAL MOTORS CORPORATION. Sept. 29, 1955 [Oct. 18, 1954], No. 27713/55. Class 103 (1). A servo-unit for a fluid pressure servo assisted hydraulic brake mechanism comprises a cylinder 12 having a piston assembly 11 on which a manually operable member 83 is movably mounted to actuate a follow-up control valve 50 to control the establishment of differential pressures on opposite sides of the piston assembly and to which is connected a push rod 97 of a master cylinder, the piston assembly having separable parts, one 31, 39 connected to the push rod 97 and carrying the control valve and the other 15 carrying a seal 16 in engagement with the inner surface of the cylinder, such that, upon fluid pressure failure, the parts of the piston assembly are separable by movement of the manually operable member.