baber/WOPTO huggingface dataset:
Patent GB-1465684-A (GB)
Title: Contraceptive device
IPC: A61F6/14
Filed: 1973-07-27
Abstract: 1465684 Intra-uterine contraceptive devices L C R EMMETT 2 April 1974 [27 July 1973] 35816/73 Heading A5R An intra-uterine contraceptive device comprises a resilient body which is "C" or capital omega shaped in the uterine cavity and elastically deformable into a linear configuration for passage through the cervical canal. In Fig. 1, device 1 comprises a C-shaped member with arms 2, 3 and rounded, enlarged heads 4, 5 which may have holes for nylon threads 9, 10 to pass through, the threads may be knotted at 11. Opposite sides 6 of the heads, which may be of different sizes, are flattened providing parallel planar surfaces. The cross section of the member is oval, surface 7 having a smaller radius of curvature than surface 8. The device is moulded from elastic plastics e.g. polypropylene or 80% polyethylene with 20% barium sulphate. The distance between heads 4, 5 is 5-7 mm and the device diameter is 23-29 mm. A copper sleeve may fit on the member. A second device 20, see Fig. 3, has two enlarged heads 31, 32 connected by member 33 serrated at 34 to prevent bunching of a copper wire 35 whose ends are embedded in the member. Threads are knotted into countersunk holes (36) in the heads, the other thread ends being secured in a plastics bead 38. The wire surface area is 200-450 sq. mm. Member 33 is ellipsoidal with planar (39) and convex (40) surfaces. The device is 23-35 mm wide, 21-27 mm deep, has 3-15 mm between the heads which are 2.5-5 mm diameter and 2-4 mm thick. The device may be hollow and porous for dispensing hormones or spermicides The copper provides X-ray opacity, enhances contraception and diminishes inter-menstrual bleeding and pain, other metals may be used. To insert the device, the uterus is sounded and flange 43 moved to 2 cm from end 44. Device 20 is straightened, inserted into the tubular inserter 41 and pushed with plunger 45 to 1 cm short of end 44. Inserter 41 is passed through the vagina 12 into the endocervical canal 13 until flange 43 rests against the cervix 14. Inserter 41 is withdrawn 1 cm, rotated 90 and plunger 45 pushed to expel device 20 while holding bead 38. The plunger 45 is withdrawn from the inserter 41, the bead 38 pulled to draw the heads together and the inserter pushed up until flange 43 again contacts cervix 14 to site the device correctly in the fundal region of the uterus. Bead 38 is cut off, the inserter withdrawn and the threads trimmed at the cervix. To withdraw the device, one thread is pulled, the device straightens and travels through the cervical canal 13.
Patent GB-1036219-A (GB)
Title: Improvements in or relating to hydraulic devices for reciprocating elements having high inertia
IPC: F15B13/02
Filed: 1963-09-12
Abstract: 1,036,219. Valves. SOC. INDUSTRIELLE GENERALLE DE MECANIQUE APPLIQUEE S.I.G.M.A. Sept. 12, 1963 [Sept. 29, 1962], No. 35930/63. Heading F2V.  The movement of an oscillating motor or, as shown, a ram 9 is controlled by a rotary or, as shown, a three-position sliding-valve 13, the lines 7, 8 to each side of the ram 9 embodying a safety valve 14, 14a, which valves seat at opposite ends of a duct 25 leading to a reservoir 6 and separate that duct from passages 27, 27a leading to the lines 7, 8. When the valve 13 is moved from an end to the central position shown the supply pump 4 is cut-off from both sides of the ram, but should the latter continue to move a positive pressure will be built up on the side of the ram previously connected to the reservoir and a reduced pressure will result on the opposite side of the ram. If the positive pressure occurs at the underside of the ram then it appears in the passage 27 and acts on a plunger 16 slidable in the valve 14 to close an orifice 23 through a piston 17 and so isolate chambers 18, 20 the former being open to the reservoir 6 via a duct 19, and the latter being connected to passage 27 by a channel 21; pressure in the chamber 20 then moves the piston 17 to the right to compress a spring 22 which loads the valve 14. Should the positive pressure then increase beyong a given level the valve 14 opens to connect the passage 27 with the duct 25. The reduced pressure in passage 27a causes the components of safety valve 14a to occupy the positions shown so that should the pressure reduce beyond a given level that valve will open and passage 27a will receive fluid from duct 25.  If, in normal operation, the ram is forced by the load connected thereto to move faster than the resulting space can be filled by the pump 4, then the respective safety valve opens to enable additional fluid to be drawn from the reservoir.
Patent GB-1261536-A (GB)
Title: Fluidized bed dryer
Inventor: ENDERS JOSEPH THOMAS
IPC: F26B3/08
Filed: 1968-07-29
Abstract: 1,261,536. Fluidized bed drier. STRUTHERS SCIENTIFIC & INTERNATIONAL CORP. 23 July, 1969 [29 July, 1968], No. 35995/68. Heading F4G. A coolant 25 e.g. water is passed between two partition plates 22, 23 to prevent particles baking at the bottom of the drying compartment 14 and on nozzles 30 through which a hot fluidizing gas is introduced. Blower 27 passes the gas through a heater 28 into the compartment 29. The particles to be fluidized are released from hopper 10 by gate 15, and after drying pass through pipe 17 to separator 18. Specification 1,261,535 is referred to.
Patent GB-798982-A (GB)
Title: Improved gun barrels
IPC: F41A21/02
Filed: 1956-11-26
Abstract: 798,982. Gun barrels. OLIN MATHIESON CHEMICAL CORPORATION. Nov. 26, 1956 [April 24, 1956], No. 36066/56. Class 119 A gun barrel, e.g. for a shot gun.or rifle, comprises a barrel liner 1 with its chamber portion 3 and shoulder portion 4 a force fit in a chamber sleeve 8 so that a neck 7 of the sleeve is in contact with the shoulder 4, the barrel liner 1 being surrounded by layers of reinforcing glass fibres 13 impregnated with a resin binder. The exterior of the reinforcing layers may be covered with a separate layer of resin coating or with a metal, e.g. aluminium, sleeve 15. The chamber sleeve 8 has a threaded end 9 which is screwed into the receiver of the gun or the end portion of the sleeve may be secured to the gun by cross pins. The liner 1 may be made of a tough and corrosion resistant steel, or of aluminium or an alloy thereof or of electroformed nickel, chromium, iron or alloys when highly polished surfaces and corrosion resistance are desired. The glass fibres may be in the form of thread wound tightly and in overlapping layers over the liner or in the form of tape or cloth or in the form of staple fibres applied in a slurry or liquid resinforming material. The liner and sleeve may be given any desired heat treatment prior to assembly.
Patent GB-1044450-A (GB)
Title: Fuel handling device for nuclear reactor
Inventor: COSTES DIDIER
IPC: G21C19/18
Filed: 1965-08-23
Abstract: 1,044,450. Fuelling reactors. COMMISSARIAT A L'ENERGIE ATOMIQUE. Aug. 23, 1965 [Sept. 1, 1964], No. 36081/65. Heading G6C. A reactor fuelling arrangement installed in a pressure vessel 4 in a space 2 separated from the reactor core by a plate 6 having openings 8 which may be unplugged to gain access to the fuel channels, comprises an inclined radial arm 10 rotatable about a vertical axis 9 and supporting a machine 12 having a fuel element grappling unit 20. The arm 10 is rotatable by a motor 63 having a pinion driving a ring gear 26 fixed to the arm and the machine 12 is traversable along tracks 14 on the arm by means of a cable 18, the unit 20 being controlled by a cable 22. Both ends of the arm 10 are supported by pressure gas bearings. At the inner end the bearing comprises a part-spherical cup 34 having chambers 36 each separately supplied with pressure gas through a pipe 52, a partspherical flange 38 fixed to the arm co-operating with the cup. At the outer end the bearing comprises shoes 28 co-operating with an annular projection 30, these shoes being connected by knuckle joints 32 to the arm and having chambers 40 supplied with pressure gas through pipes 60, 62. The gas is supplied to the pipe 60 from an annular groove 54 connected to the chambers 36 through ducts 58. Normally, the co-operating members forming the bearings at each end of the arm make solid contact with each other, the pressure gas being only supplied when it is desired to rotate the arm. The gas used is the reactor coolant gas and is supplied through a cooler 44, filter 46 and compressor 48.
Patent GB-337239-A (GB)
Title: Coin-freed automatic machines for the sale of soap, towel, and a liquid; eau de cologne, or the like
IPC: G07F17/18
Filed: 1929-11-26
Abstract: 337,239. Weidner, E. Dec. 12, 1928, [Convention date]. Delivery of articles stored in piles; delivery of liquids.-In a machine for delivering, after a single coin insertion, a piece of soap, a towel, and a liquid such as eau-de-cologne, disinfectant or the like, a handle 2, Figs. 1 and 2, is pulled, after prepayment, to actuate a slide 13 having an ejector 14 to push out a piece of soap 15 from a tube 16 to a dish 7, and a spring plate 18 to deliver a towel through an opening 9. The towels 10 guided by rods 19 have short under-folds 11 in which the plate 18 engages. They are downwardly inclined and rest at their rear ends on a cross bar 20. The opening 9 is normally closed by a shutter 46 opened by levers 47 which are actuated by projections 49 on the slide. A slotted arm 26 on a vertical arm 23 of the slide actuates the crank arm 28 of a three-way cock 29. At the end of the forward movement of the slide, the cook is turned to close the passage 31 between a tank 30 and a measuring tube 32, and establish communication between the tube 32 and a discharge pipe 33 leading to a tiltable bowl 5. When the slide is returned by springs 22, the pipe 33 is closed and the passage 31 opened. Coin action, weight.-A coin, having passed through the usual tester 51, drops down a shoot 52 and tilts a balanced beam 41 which engages one end 40 of a doubly cranked wire 38 and rocks this so that, its other end raises a pivoted toothed pawl 34 out of the path of a pin 35 on the slide. The coin is drawn along the beam 41 by the slide and rolls down a bevelled portion 45 to the money box 44.
Patent GB-1482608-A (GB)
Title: Sonar systems for detecting submerged objects
IPC: G01S15/89
Filed: 1974-08-16
Abstract: 1482608 Sonar systems FRANCE ARMED FORCES MINISTER OF 16 Aug 1974 [16 Aug 1973] 36259/74 Heading G1G A sonar system for identifying the silhouette of submerged objects on or near the sea bed comprises a transmitter of very brief, short-wavelength ultrasonic pulses, a receiving hydrophone array mounted with the transmitter on a support rotatable about a substantially vertical axis, a beamformer acting on the received signals and providing a plurality of receiving channels, a device for sequential sampling of the channels, a synchronizedscan device for displaying the sampled signals, and means for mutually phase-shifting the hydrophone signals so that each beam formed is focused within the Fresnel zone of the array. In the embodiment described pulses of a constant or swept carrier frequency are transmitted selectively over 10 degrees or 3 degrees sector by a curved array of transducers. The swept frequency tends to reduce the variance of the sea-bed reverberation and so enhance the signal-to-noise ratio. The beam-former includes tapped delay lines and provides amplitude and phase weighting to give 100 over-lapping beams each 0.16 degrees wide and together covering the sector. The phase-weighting, or additional phase-weighting, provides the beam focusing. A multi-plexer feeds the received signals to the brightness control of a CRT range-bearing display. The horizontal line scan of the CRT is synchronized with the multi-plexing such that all received beams are sampled during one line. The vertical dimension of the display represents range. Range markers and cursors are provided. The maximum range of the sonar can be pre-selected; the pulse width and repetition rate and the multiplexing rate being dependent on the selected range. A second CRT display of a selected partial range on an enlarged scale is provided and incorporates a looped-delay-line image store. A positive or negative image may be displayed.
Patent GB-990587-A (GB)
Title: Improvements in gas filtering apparatus
Inventor: WELLS ALFRED JOHN
IPC: B01D46/06
Filed: 1962-09-25
Abstract: 990,587. Filtering gases. DUST CONTROL EQUIPMENT Ltd. Sept. 24, 1963 [Sept. 25, 1962], No. 36329/62: Heading BIT. In a gas filtering apparatus of the kind comprising a series of flat sided filter pads each including an open mouthed permeable bag containing a supporting grid to prevent collapse of the bag during filtering and utilizing a reverse flow jet pulse cleaning system, each filter pad is confined by restrainer elements which prevent the filter bag from ballooning during the cleaning. In the embodiment described, the cleaning pulse is of 350 milli-seconds duration, at a pressure of 86 p.s.i., and by preventing the bags from ballooning, the pressure rise within the bag is increased from 5À5 to 7À6 inches w.g. Air to be cleaned, originating from grinding, cutting or polishing machines used in the engineering, chemical and food industries, enters through inlet 2 and passes to two parallel banks of filter pads B, B<SP>1</SP>, Fig. 1, and then via filter pad outlets 6 to a chamber 16 and clean air outlet 3. The cleaning pulses are fed to the filter pads via conduits 18 from a high pressure reservoir 19 controlled by an automatically operated solenoid 20. A typical filter restrainer is shown in Fig. 5, and includes cross braces 23 connecting the two sides ; a similar form of wire mesh grid is also used inside the filter bags. Alternatively (Fig. 6, not shown), a number of wire straps are placed around the bag. A further embodiment (Fig. 7, not shown) uses a filter restrainer similar to that of Fig. 5, except that it is open at one end. Specifications 943,100 and 974,144 are referred to.
Patent GB-1058923-A (GB)
Title: Improvements in or relating to shoe upper conforming machines
IPC: A43D21/12
Filed: 1963-09-25
Abstract: 1,058,923. Lasting machines. BRITISH UNITED SHOE MACHINERY CO. Ltd. (UNITED SHOE MACHINERY CORPORATION). Sept. 24, 1963 [Sept. 25, 1962], No. 36345/62. Heading A3B. A toe lasting machine comprises a shoe support, toe embracing wipers, means for effecting upwiping and inwiping movements of the wipers and a retarder which clamps the upper against the front operating edge of the wipers. As described the above features are incorporated in a toe lasting machine of the type described in Specification 721,758. The retarder comprises a thin strip of metal 18 which is held in a holder 200 by a stud on the holder engaging a hole in the retarder and by two arms (232, 234) which can be adjusted towards and away from each other by a double threaded screw (222). The retarder 18 is shaped to conform to the edge contour of the last and has two parallel edges, the retarder being inverted for use with a last of the opposite foot (i.e. left or right). The holder 200 is mounted on the end of an arm 202 and is moved heightwise and lengthwise of the last by a series of levers and cams (not shown) as described in the abovementioned Specification. In operation a shoe is placed bottom-up in the machine as shown in Fig. 3, the retarder 18 being used to position the shoe and is clamped against an abutment 4 by a toe rest 22. The toe wipers 2 then move forward and upward to clamp the upper against the retarder 18, the insole being held down by an insole hold-down 390. The retarder 18 and wipers 2 then move upwards together to tension the upper about the last, the retarder moving upwards at a slightly greater rate than the wipers 2 so that on completion of the upward movement the retarder is above the level of the wipers to allow the wipers to perform their inwiping operation. During this inwiping operation the retarder and the insole holddown 390 are raised out of the way of the advancing wipers. The machine then continues its cycle as described in the abovementioned Specification.
Patent GB-175851-A (GB)
Title: Improvements in or relating to boilers of the locomotive fire-tube type
IPC: F22B13/08
Filed: 1920-12-30
Abstract: 175,851. Mann's Patent Steam Cart & Wagon Co., Ltd., and Mann, J. H Dec. 30, 1920. Shells; fire-boxes.-A boiler of the locomotive fire-tube type has its shell, comprising the barrel and external fire-box, constructed from three plates. The barrel 1, the back half of the external fire-box 2, and the front portion 3 are each formed from one plate, the three parts being welded or riveted together at their butting or overlapping edges 5, 6.
Patent GB-1025069-A (GB)
Title: Automatic tool change mechanism for machine tool
IPC: B23Q3/157
Filed: 1964-09-04
Abstract: 1,025,069. Machine tool details. CINCINNATI MILLING MACHINE CO. Sept. 4, 1964 [Sept. 25, 1963], No. 36462/64. Headings B3B, B3C and B3K. A machine tool comprises a turret 17 mounted on a tool head 16 and having two spindles 31, one to receive a tool from a tool changer and one to operate a tool at a working station. The head is moved vertically by a screw 19 rotated by a hydraulic motor 20. The two identical tool-spindles 31 are rotated by a motor 32, belt gearing 33, a speed-change box, a vertical splined shaft 34, bevel gears 35 and a shaft 37 on the axis of adjustment of the head. The drive to the spindle 31 continues through gears 38, 41, 47, 50, the latter two gears being alternatively selected by electromagnetically operated clutches 53, 65 according to the speed required. During turret indexing, one of the spindles is locked by engaging both clutches: this causes rotation of the shaft 34 and assists in the shifting of gears in the speed-change gear-box. Furthermore, at the beginning of a tool change cycle, which is controlled by way of stepping switches, a brake is applied to prevent rotation of the shaft 34. The spindle 31 contains a threaded draw-bar 69 for securing a tool-holder 70 having a straight shank 75, a holding groove 72, and positive driving teeth 79. A squeeze bushing 75 grips the toolholder. The draw-bar is rotated by a reversible electric motor started by a switch operated by a rod 86 which is moved axially when a tool is inserted. The spindle is locked by a fluidoperated plunger while the draw-bar is rotating. The turret 17 is indexed by worm-gear 93 rotated by a hydraulic motor 1MF controlled by a dog 96 and limit switches 95, the rotational speed being reduced as the dog approaches a switch. It is held in position by clamps operated by fluid-pressure-controlled wedges. The tools are retained by spring-detents in sockets 107, Fig. 5 (not shown), in a tool-storing drum 18. The drum is rotated in either direction through the shortest path, by a hydraulic motor to a position determined by resolvers, and is locked in position by a spring-pressed plunger normally held inactive by fluid-pressure means. A tool transfer arm 158 has two fingers 159 moved by a cam 188 to grip a tool. The cam is oscillated by air-pressure means 190 and the arm 158 is mounted on a slide 161 moved axially by fluid-pressure means and is rotated by rack gearing also operated by fluid-pressure means. If, during a tool-change, the teeth 79 on the tool-holder do not engage in the spaces between the driving teeth on the spindle, thus preventing the tool-change arm from completing its axial movement, the arm is reciprocated automatically until correct meshing is achieved. The sequence of tools to be used can be set in by manual switches or by a tape control. Reference has been directed by the Comptroller to Specification 916,503.
Patent GB-1057190-A (GB)
Title: Improvements in electric protective equipment
IPC: H01B17/26
Filed: 1964-09-10
Abstract: 1,057,190. Protective cut-out arrangements; vacuum switches. GENERAL ELECTRIC CO. Sept. 10, 1964 [Sept. 30, 1963], No. 37002/64. Headings H2B and H2K. [Also in Division H1] The boundary of the protected zone of line 11 (Fig. 2) is extended to the circuit-breaker A by enclosing the adjacent current transformer winding 30 (which like a current transformer winding at the other end of line 11 (Fig. 1, not shown) is connected to a differential relay 20 controlling the circuit-breakers at both ends of 11) in a conductive casing 80, 80a, connected to the primary conductor at 86 and in tubular conducting shields 102, 107 connected together at 108 only and to earth via pedestal 115. A current transformer winding 35 forming part of the protective system for line 12 may be arranged alongside 30. The casing is filled with sulphur hexofluoride. Flashovers at electrodes 131, 132 or at positions such as N, O, P, Q, M then produce an effective current linking the transformer secondary windings which results in operation of the appropriate differential relay. The circuit breaker A comprises one or several highly evacuated chambers 60 each containing a fixed contact 56 and a movable contact 58 secured to a bellows 63 operated by mechanism in earthed chamber 70 through linkage 69, 65.
Patent GB-789519-A (GB)
Title: Improvements in or relating to magnetic tape reproducing apparatus
Inventor: RICHARDS CLAUDE LANGDON
IPC: G11B15/44
Filed: 1954-12-22
Abstract: 789,519. Magnetic reproducing apparatus. ELECTRIC & MUSICAL INDUSTRIES, Ltd. Dec. 21, 1955 [Dec. 22, 1954], No. 37036/54. Class 40 (2). In a magnetic tape apparatus adapted for the reproduction of both a tape having complementary tracks, such as binaural sound tracks, and one having independent tracks for reproduction in opposite directions, selective means are provided for automatically reversing or stopping the movement of the tape at the end of its run in one or both directions. In the embodiment described and shown in the Figure, the tape is drawn in a forward direction by a capstan motor 12 and wound on to reel 5 by a motor 7, and in a return direction by a capstan motor 16 and wound on to reel 2 by a motor 6. If a control member 32 is set to position A the apparatus is conditioned for the reproduction of tapes carrying complementary or binaural tracks and both transducers 9, 10 are operative. When the tape has been almost entirely drawn from spool 2 a shorting strip in the tape electrically connects the two halves of a guide pulley 3 and. causes a relay 29 to be energized and forward drive is thereby stopped. The control member 32 may then be set to position C, whereupon a relay 31 is energized and the tape is rewound at high speed back to spool 2 until a similar shorting strip at the opposite end of the tape connects the two halves of a guide pulley 4 and causes a relay 27 to be energized and the return movement is thereby stopped. If the control is initially set to position C the rewinding takes place automatically. If the control member is set to position B, the apparatus is conditioned for reproduction of individual tracks and only one transducer is operative at one time. When the shorting strip at the end of the tape reaches guide pulley 3 the tape is stopped as before by the energization of relay 29, but relay 30 becomes energized and automatically establishes the return drive by motors 6 and 16 and at the same time brings the other transducer into operation. When the shorting strip at the opposite end of the tape reaches guide pulley 4, relay 27 is operated as before to stop the drive of the tape. Specifications 652,498, 779,708 and 789,520 are referred to.