baber/WOPTO huggingface dataset:
Patent GB-726197-A (GB)
Title: Improvements in or relating to the sifting or screening of moist crushed coal, coke or ore
IPC: B07B1/62
Filed: 1952-11-11
Abstract: 726,197. Sifting-apparatus. BURSTLEIN, E. M., and SOC. DES ACIERIES DE LONGWY. March 20, 1953 [Nov. 11, 1952], No. 28410/52. Class 117. A screen, electrically heated by a lowvoltage supply, is divided into transverse panels connected together by conductive trarisverse junctions, which are connected in turn to different terminals of one source of energy so that the voltage varies in continuous fashion along the screening surface which operates as a single electric conductor. For example, a screen may comprise three panels bounded by the conducting end strips 1, 4, Fig. 4, and intermediate junction strips 3, 5. One terminal a of the single-phase A.C. supply is connected to conductors 1, 5 and the other terminal b to conductors 3, 4. In order to obtain differential heating, decreasing in the direction of travel of the material to be screened, the screen wires may be given a decreasing diameter, an increasing resistivity or an increasing length from the first panel to the third. In an embodiment using a three-phase delta-connected supply terminal c, Fig. 6, is connected to the end conductors 1, 4 and terminals d, e to the intermediate conductors 3, 5 respectively. To obtain differential heating, while maintaining equal loads on the three phases, the three screen panels are of different length. Arrangements for supplying six-panel screens from a threephase supply are described, Figs. 7, 19 (not shown). Figs. 8 ... 18, of which only Figs. 8, 18 are shown, give constructional details of a three-panel tensioned screen. The screening surface 22, Fig. 8, is supported by longitudinal and transverse members 23, 24, respectively in the casing 21. The panels are fastened to tensioning carriages 25 at the ends of the screening surface and intermediate junction carriages 26 all of which can slide in insulating supports 27. Flexible conductors 28 connect the carriages to the supply leads 29. The screen is fed from a shoot 30, a discharge hopper 31 receiving the fine material and a shoot 32 the oversize. To make good electrical contact between the screen 33, Fig. 18, and the carriage 25, its end is embraced by a bent-over metal strip 34, filler metal 35 being poured therebetween and the end so formed is bolted to the carriage. Secured to the carriage 25 are a number of tension rods 40, insulated therefrom by bushes 42 and washers 44. Pull on the rods is exerted by springs 49, bearing against a cross member 50 secured to the screen casing. A deflector plate 51 prevents material from fouling the gap between members 25 and 50.
Patent GB-1015992-A (GB)
Title: Semiconductor controlled rectifier
IPC: H01L29/73
Filed: 1962-07-25
Abstract: 1,015,992. Semi-conductor devices. MITSUBISHI DENKI KABUSHIKI KAISHA. July 25, 1962 [July 25, 1961], No. 28549/62. Heading H1K. A PNPN or PNPM semi-conductor controlled rectifier comprises a fifth semi-conductor zone of appropriate conductivity type arranged to provide a further PN junction near to the middle PN junction so that the fifth zone may be biased to reject carriers to trigger off conduction in the main PNPN channel. Fig. 4 shows a PNPN controlled rectifier device comprising emitter region 10, base or gate region 12, second base region 14 and collector region 16. Electrode 22 is chemically connected to region 12 and a further rectifying connection to region 12 is provided by means of N-type region 34 with ohmic electrode 32. When a switch 30 is operated, bias is applied by means of battery 28 to electrode 32 to inject minority carriers into zone 12 to initiate the switch-on condition in the NPNP device so that current from battery 26 passes through load 24. The device may be produced by diffusing gallium into an N-type silicon wafer and then alloying a gold-antimony foil to the surface to produce the N-type region 34, and an aluminium wire or gold-boron foil to produce ohmic contact 22. Germanium or semiconductive III-V, II-VI or IV-IV compounds may be used instead of silicon. In another example the emitter, base 12 and rectifying region 34 are annularly arranged, and in a further example a circular emitter is positioned close to two circular zones constituting ohmic contact 22 and rectifying contact 34, respectively. A metal injection type of electrode may be used to inject carriers in place of the outer semi-conductor region.
Patent GB-1309862-A (GB)
Title: Inhibition of hydrogenolysis
IPC: C10G35/06
Filed: 1970-06-12
Abstract: 1309862 Hydrogenolysis catalysts ESSO RESEARCH & ENG CO 12 June 1970 [20 June 1969] 28589/70 Heading B1E [Also in Division C5] Catalysts which inhibit hydrogenolysis in hydrocarbon conversions at high temperature consist of a group VIII metal and a group IB metal on a support. Bimetallic catalysts used in the Examples are Ni-Cu, Ru-Cu, Ru-Ag and Co-Cu each supported on SiO 2 .
Patent GB-359663-A (GB)
Title: Improvements in or relating to ships' boat launching gear
IPC: B63B23/04
Filed: 1930-09-24
Abstract: 359,663. Davits. SMITH, C., 42, Drammensveien, Oslo, Norway. Sept. 24, 1930, No. 28614. [Class 115.] To enable a number of boats to be simultaneously swung in and outboard the davits are interconnected and are operated by a single operating device. The davits B of which the intermediate units are provided with a, pair of arms B<1> serving adjacent boats are mounted in a single fore- and aft-operating shaft C which is driven from the motor M through suitable worm or other gear. The davits are also provided with outboard fenders F which support the boat in the inboard and outboard positions and act as stops to limit the outboard movement of the davits. Inboard, the davits carry rails E which are rotated into the vertical when the davits are outboard. Gripes G2 hold the boat firmly in its extreme positions.
Patent GB-796424-A (GB)
Title: A field emission electron gun of high brightness
IPC: H01J3/02
Filed: 1955-10-10
Abstract: 796,424. Electron beam apparatus. ARDENNE, M. VON. Oct. 10, 1955 [May 10, 1955], No. 28744/55. Class 39(1). A field emission electron gun of high brightness comprises an actual field emission or principal cathode of relatively low work function material surrounded by an auxiliary cathode of relatively high work function material and an apertured anode for providing an accelerating or attraction field with parallel lines of force ; the emission from the principal cathode is stabilized, e.g., by a series resistance in the cathode supply lead or by the screening effect of the space charge. In Fig. 1, the principal cathode is the tantalum or magnesium head of a very fine wire 2 (r3Á thick) and the auxiliary cathode is a wire jacket 1 of platinum. The Wollaston wire method of manufacture may be used. In Fig. 2 the principal cathode is a cap 6 (r1Á thick) on a polished and highly purified platinum surface 3. The cap is formed by evaporation through the aperture (r1 to 2Á diameter) in the anode 4. The anode is of metal foil and the aperture may be formed by electrons. The platinum jacket is heated at e.g., 600-‹ 1000‹C., continuously or intermittently, to destroy contaminating films. The temperature of the platinum jacket may be adjusted to control the cathode-anodes pacing (r10<SP>-3</SP> cm.). Data concerning the geometry of the systems of Figs. 1 and 2 and the applied anode voltages are given.
Patent GB-1392349-A (GB)
Title: Slidevalves
IPC: F16K3/02
Filed: 1972-06-20
Abstract: 1392349 Valves SISTAG MASCHINENFABRIK SIDLER STALDER AG 20 June 1972 [5 Jan 1972] 28856/72 Heading F2V A slide valve comprises a U-shaped sealing groove 7, a cross-groove 8 in parts of a two-part housing 1a, 1b, an elastomeric sealing ring in the cavity 8 and groove 7, and a pair of elastomeric bars each split into halves 12a, 12b and having a hollow containing asbestos fibres. Adjustable screws, not shown, apply pressure via sealing pads (16) (Fig. 1, not shown) so as to force the hollow bars 12a, 12b, into sealing contact with the slide valve member 3. A scraper 10 prevents particles from penetrating the seal when the slide valve opens. In addition the narrow sides of the member 3 form scavenging corners.
Patent GB-1030286-A (GB)
Title: Lamp socket
IPC: G05G1/12
Filed: 1964-07-13
Abstract: 1,030,286. Lamp-holders. UNITED-CARR Inc. July 13, 1964 [Aug. 20, 1963], No. 28872/64. Heading H2E. A socket for an electric lamp comprises a housing 10 of resilient insulating material having a cavity in which is contained a metal shell 12, the shell 12 being secured in the housing 10 by means 40 which engage with a wall of an annular groove 22 formed in the housing 10. The shell 12 is split for flexibility and has two bayonet slots 38 and four arms 34 which secure the socket to a support 44. A cap 42 attached to wire lead 14 is mounted in cavity 31 of the housing portion 30.
Patent GB-280360-A (GB)
Title: Pudding crust support
IPC: A47J43/20
Filed: 1926-11-16
Abstract: 280,360. Tooth, M. J. Nov. 16, 1926. Crust supports.-A pudding crust support, adapted to be inserted into a basin or like container and entirely enclosed by the crust, comprises a funnel A, perforated as at C near its base, and a star-shaped crust support proper D which fits into the top of the funnel or over a reduced upper extension thereof, no part of the funnel or of the star-shaped support extending any material distance above the general plane of such star-shaped support.
Patent GB-1135507-A (GB)
Title: Machine for heading wire
Inventor: DABNEY EUGENE E
IPC: B21F5/00
Filed: 1967-06-22
Abstract: 1,135,507. Heading. PRESCON CORP. 22 June, 1967, No. 28953/67. Heading B3H. A heading machine, particularly for cold heading wire stock 38, comprises an hydraulically operated jaw 29 for clamping the workpiece, an hydraulically operated die 46 for heading the clamped workpiece, means for controlling the supply of hydraulic fluid whereby the heading die operates only after the workpiece has been clamped, and hydraulic means 123 for retracting the jaw and die. The wire 38 is clamped against fixed jaw 32 by the movable jaw 29 actuated by piston 60 in cylinder 19. Both jaws are of part-cylindrical cross-section, Fig. 4 (not shown), with transverse pins (57) for supporting the wire before clamping. The heading die 46 is actuated by a piston 63 in cylinder 42 and co-operates with a recess (51<SP>1</SP>) Fig. 5 (not shown), in the adjacent end of the jaws for forming a spherical end on the wire. Hydraulic fluid is drawn from reservoir 54 by pump 64 and delivered along line 66 to solenoid valve 79. To start a heading operation, a foot switch 76 is depressed to energize the valve 79 which connects line 66 with line 61 leading to cylinder 19, and also with line 89 leading to a sequence valve 90. When jaw 29 closes to clamp the wire, pressure builds up in lines 61, 89 and acts through ducts 92, 92<SP>1</SP> to depress valve member 96 against adjustable spring 97. This opens the valve 90 to the position shown, causing the fluid to pass along line 91 into cylinder 42 and effect the heading stroke. Further build up of pressure in line 66 opens spring-loaded valve 113 to relieve the pressure and also acts through Venturi 69 to open contact 129 and deenergize the solenoid valve 79. This by-passes the pump output to the reservoir 54 and pistons 60, 63 are retracted by hydraulic fluid in the air-loaded accumulator 123.
Patent GB-323555-A (GB)
Title: Improvements in or relating to copying-lathes
IPC: B27M3/20
Filed: 1928-10-09
Abstract: 323,555. British United Shoe Machinery Co., Ltd., and Bonser, E. F., (United Shoe Machinery Corporation). Oct. 9, 1928. Turning.-A copying-lathe such as a lastturning lathe of the type described in Specifications 20914/03 and 221,823 has means controlled bv the reversals of the pattern carrying frame to vary the pressure between the pattern and its tracer so as to minimise jarring. In one form an air-check cylinder 10 is mounted on the swing frame of the lathe described in Specification 221,823. The cylinder has a piston 12 fitted with a hollow extension 14 pressed by a spring 20 against a profiled plate 50 mounted on the cuttercarriage 55. The cylinder communicates by pass. ages 26, 28, with a passage 30 which may be partially shielded by means of a sleeve 32 adjusted by a screw 34. A non-return ball-valve 44 is provided to admit air to the cylinder behind the piston while a passage 44 is provided to admit air to the cylinder behind the piston while a passage 42 is bored in the front cylinder cover. In order to vary the checking action along the length of the last, the abutment plate 50 is shaped as shown in Fig. 2, the action being at a maximum while the greatest variations of the radial dimensions of the last are occuring. In a modification, adapted to be used with a Gilman lathe, the swing frame 60 is pulled towards the cutter carriage by a rope 64 carrying a weight 62 and passing over a fixed pulley 66 and a second pulley 70 mounted on one arm of a bell crank connected by a link 72 to the frame. In this form, when the swing frame makes a sudden outward movement the pulley 70 is raised, thus increasing the pull of the rope 64 and preventing the frame from leaving the model. Conversely when an inward movement is made, the pull is decreased and the cutter is prevented from cutting too deeply into the work. In a further modification the rope may be replaced by an elastic member which is engaged at some point in its length by the pulley 70 to vary the pull on the swing frame. In another modification the swing frame may be biassed by means of a member 81, Fig. 5, engaging the model at a point opposite to the tracer wheel 93 and pressed into contact with the model by means of an adjustable spring 88.
Patent GB-866918-A (GB)
Title: Method and apparatus for time control, particularly work time control
IPC: G07C1/18
Filed: 1957-09-16
Abstract: 866,918. Selective punching machines. REICHERT, W. Sept. 16, 1957 [Sept. 24, 1956], No. 29052/57. Class 31 (2). [Also in Group XIX] Apparatus for punching a tape 49 is controlled partly by means of a device 1 for sensing punched symbols in a part 4 of a control card 2 and partly by means of sets of contact discs 71 to 73 and programme discs 77,78 controlled by a clock 70. The sensing device 1, sets of contact discs 71 to 73 and programme discs 77, 78 are connected electrically to commutators 12 to 16 having stationary contact-rings 23 to 27 and stationary current feed-rings 28 to 32 over which move wiping arms 18 to 22 mounted on a rotatable shaft 17. The shaft 17 is rotated by gearing from a shaft 35 driven by the shaft 39 of an electric motor 40 and on the shaft 35 is mounted an eccentric 41 which acts on a movable support 42 of a common pressure rail 43 for operating punches 44 to 48 through spring-influenced interposers 50 to 54. The interposers are selected by means of electromagnets 55 to 59 which are controlled by the commutator contact-rings 23 to 27. Of the contacts arranged on each contact-ring 23 to 27, appertaining to the twenty-five hole columns a to z in the punched tape 49, Fig. 6, the contacts a are connected with switches 7, 8, the contacts b to d with the contacts 87, 88 of the programme discs 77, 78, the contacts e to q with the contacts 11 of the sensing-device and the contacts r to z with the contact sets 74 to 76 of the contact disc sets 71 to 73. For different punched recording-operations, tapes with distinguishing markings, such as different colours, may be used. The tape may have transverse perforations between sets of columns of punched symbol combinations. Means are provided to produce visual or audible signals or to stop the sensing operation if the control card is not inserted correctly or if a wrong control card is inserted.
Patent GB-411883-A (GB)
Title: Improvements relating to cathode ray tubes
IPC: H01J29/52
Filed: 1932-10-18
Abstract: 411,883. Cathode-ray tubes. INTERNATIONAL GENERAL ELECTRIC CO., Inc., 120, Broadway, New York, U.S.A.- (Assignees of Allgemeine Elektricitõts-Ges.; 2, Friedrich Karl-Ufer, Berlin.) Oct. 18, 1932, No. 29134. Convention date, Oct. 19, 1931. [Class 39 (i).] The intensity of the cathode-ray is modulated magnetically by passing the modulating current through a coil 15 surrounding a tube 10 which is wholly or partially of conducting material and which joins a part 6 containing the cathode 12 to a part 7 supporting the fluorescent screen 14. The parts 6, 7 are of glass and the tube 10 of metal or of internally silvered glass. The tube 10 has an internal diameter of 2-3 mm. and serves as the anode. Specification 177,534, [Class 39 (i)], is referred to. The Specification as open to inspection under Sect. 91 comprises also a modification in which the modulating coil is inside the cathode-ray tube between the cathode and the anode. This subject-matter does not appear in the Specification as accepted.
Patent GB-812453-A (GB)
Title: Screw thread insert tool
Inventor: WILSON HAROLD GEORGE CARMICHAE
IPC: B25B27/14
Filed: 1956-09-25
Abstract: 812,453. Inserting screwed bushes. BRUCE & BROWN Ltd. Sept. 23, 1957 [Sept. 25, 1956], No. 29209/56. Class 83 (3). A tool for inserting screwed bushes, particularly those described in Specifications 734,063 and 668,818, has a shank 1 with an integral threaded portion 3 engageable with the bush 11, and a collar 4, rotatably held to the shank by a pin or pins 5 passing through the collar into a groove 6 in the shank. The pins and groove allow slight axial displacement of the collar. In use, the bush is screwed on to the portion 3 until it abuts the collar 4. The tool is rotated, e.g. bv a tommy-bar, to drive the bush into a hole 12, and the collar is locked against an abutment 9 on the shank. On reverse rotation of the tool, rotation of the collar is prevented by a spanner engaging flats &c. thereon, or reversely rotated to prevent unscrewing of the insert, the slight axial movement of the collar facilitating disengagement of the tool from the insert. The collar 4 may have a boss 14 to drive the insert below the surface 151. In a modification, the portion 3 is screwed to the shank, is axially adjustable according to the length of the insert, and is locked by a grub screw.
Patent GB-340046-A (GB)
Title: Improvements in and relating to wireless receivers
IPC: H04B1/22
Filed: 1929-09-27
Abstract: 340,046. Blundell, L., and Curtis, W. H. Sept. 27, 1929. Thermionic amplifiers.-The valves 4, 5 of a wireless receiver are coupled by aperiodic step-up transformers 51 with separate, individual windings in sections on a former or bobbin, such as that described in Specification 331,921, [Class 38 (ii), Electric currents, Converting &c.]. The primary and secondary may be wound in opposite directions, the plate of the preceding valve 4 connected to a tapping on the primary, and a tapping on the secondary connected to the grid of the succeeding valve 5, (Fig. 2, not shown). A double-pole switch 50 throws a coil 47 in shunt with an aperiodic aerial coil 43 and a grid coil 46 to increase the frequency to which the grid circuit can be tuned by a variable condenser 48. Specification 336,023 also is referred to.
Patent GB-1268122-A (GB)
Title: Envelope assemblies
Inventor: SUGDEN FRANK
IPC: B65D27/10
Filed: 1969-11-06
Abstract: 1,268,122. Continuous envelope assemblies. JOHN DICKINSON & CO. Ltd. 9 Nov., 1970 [6 Nov., 1969; 17 June, 1970], Nos. 54488/69 and 29353/70. Heading B6A. A continuous envelope assembly comprises a plurality of envelopes whose leading and trailing edges 4, 5 are overlapped and the opposite narrow edges 12 of the envelopes are attached to lugs 23 spaced uniformly along pin feed strips 6, the envelopes being severable from the strips along lines of weaknesses 25. To facilitate folding of the envelopes in predetermined numbers to form a zig-zag stack, an envelope at the fold line 27 is replaced by a strip 30 of paper. The lines of weakness may be dispensed with and the envelopes separated by a pair of spaced slitters.
Patent GB-414551-A (GB)
Title: Improvements in or relating to the fixing of anode protection means in metal vapour rectifiers
IPC: H01J13/20
Filed: 1933-10-23
Abstract: 414,551. Metallic-vapour rectifiers. ENGLISH ELECTRIC CO., Ltd., 28, Kingsway, London. Oct. 23, 1933, No. 29369. Convention date, Oct. 22, 1932. [Class 39 (i).] The anode protecting tube is secured to its support by a helical spring which is located partly in an annular groove in the tube and partly in a corresponding groove in the support. Springs 8, 9 are located in grooves in the anode insulator 3 and in a cap 5 secured to the tube 4, and are inserted through holes in the cap which are subsequently closed by welded or soldered plates. Rotation of the tube is prevented by a pin 11, and the insulator may be thickened in the vicinity of the grooves.
Patent GB-650951-A (GB)
Title: Improvements in fluid control devices
IPC: B60T15/04
Filed: 1947-11-05
Abstract: 650,951. Fluid-pressure operated brakes. DUNLOP RUBBER CO., Ltd., and TREVASKIS, H. W. Nov. 5, 1947, No. 29442. [Class 103 (i)] [Also in Group XXIX] A driver's valve for fluid-pressure operated brakes has a body 1, Fig. 1, divided into supply, operating and exhaust chambers 29, 20, 10, respectively, with interconnected inlet and exhaust valves 30, 27 respectively separating the operating chamber from the inlet and exhaust chambers, and when an actuating sleeve 24 is moved by a fork 51 to the left, the exhaust valve is closed and the inlet valve opened. Pressure fluid then passes from an inlet 6, through extensions 17, 16 of a piston 14, passages 21, 22, 23, Fig. 3, and a nipple 11, Fig. 2, to the brakes. The pressure fluid also acts on the rear of the piston which, when a spring 15 is overcome, moves to close the inlet valve. Increased braking pressure is obtained by moving the sleeve 24 further to the left. When the fork 51 is released, the sleeve returns to the position shown and the pressure in the brakes is exhausted through a bore 25, orifices 26, and the chamber 10 to a nipple 12 which may connect with a reservoir. In a modification the piston is replaced by a bellows and sealing rings 33 are also replaced by bellows. In a further modification, flexible membranes replace the bellows.
Patent GB-185990-A (GB)
Title: Improvements in fluid pressure engines
IPC: F01B17/04
Filed: 1921-11-05
Abstract: 185,990. Spooner, W. W. Nov. 5, 1921. Exhaust, treating.-A minimum difference in pressure between the inlet and exhaust sides of a cylinder is maintained by a fluid-actuated exhaust throttle valve 2 controlled by the pressures on both sides supplied by pipes 3, 4 to the actuating- piston 8. The valve 2 moves against the resistance of a spring or weight. Additional steam may be supplied by a branch 6 to the outlet 5 when used to supply heating-steam.
Patent GB-890450-A (GB)
Title: Improvements relating to the securing of tools and the like in their handles
IPC: B25G1/00
Filed: 1959-08-31
Abstract: 890,450. Tool handles. DAVIES, D. E. Nov. 24, 1960 [Aug. 31, 1959], No. 29583/59. Class 61. In a handle for a tool, implement or handguided mechanism comprising a conical spring 3 located in a conical socket 2 and adapted to bite into the corners of the tang of the tool &c. as the handle is screwed on to the tool &c., a ring 7 or ferrule is held non-rotatably on the tang receiving end of the handle, the spring and the ring or ferrule or its holding means being shaped for mutual interconnection in such a way that relative rotation is prevented. As shown, the ring 7 is held to the end of the handle by screws or nails 8, one of these being arranged to pass through an eye 4 formed on the uppermost convolution of the spring 3. In a modification the end of the uppermost coil of the spring is turned up in an axial direction to pass through a hole or slot in the end flange of a ferrule secured to the handle by forming one or more depressions in the skirt thereof. Specification 796,960 is referred to.