baber/WOPTO huggingface dataset:
Patent GB-278546-A (GB)
Abstract: 278,546. Scott, J. Nov. 25, 1926. Segmental and block paving; kerbs; foundations.-The foundation b<1> of a sidewalk is formed some distance below the level of the paving flags B, and runner blocks of moulded concrete are laid end to end to form ducts D, in which water, gas, and electric mains W, G, E are located. The outer runner blocks C<1>, C<2> have only internal feet c<1> but the internal runner blocks have feet c' on both their sides. The web portion of the blocks is perforated as shown at C<4> to lighten the construction and to accommodate transverse branch pipes and mains w<1>, g', e<1>. Pipe or cable racks C<7> may be moulded with the runner blocks, and rollers H may be provided across the ducts. The successive blocks are dowelled into each other, to ensure correct alignment. The block C<1> against the kerb a<3> may be moulded in one with this kerb. Conduits J may be provided at intervals under the roadway to establish communication between one side and the other for branch services.
Patent GB-1207216-A (GB)
Title: Heat exchange structure
IPC: F28D5/00
Filed: 1968-06-12
Abstract: 1,207,216. Heat exchange surfaces. COMPAGNIE FRANCAISE THOMSON HOUSTON - HOTCHKISS BRANDT. 12 June, 1968 [13 June, 1967], No. 27998/68. Heading F4S. [Also in Division H1] A non-isotherm heat dissipating structure comprises a heat conducting wall particularly in an anode structure 1 which is exposed on one side to a heat source and has its other side immersed in a vapourizable coolant liquid and formed with heat dissipating protruberances 2 separated from each other by channels 4, 5 having a depth b equal to c/n, where c is the thermal conductivity of the wall and n has a value comprising between 2 and 8, if c is measured in watts/ cm.‹ C. and the smallest dimension between the channels of the protruberances is greater than the depth b, the depth and distance being measured in centimetres. The channels may have rounded bases, or outer edges, formed in pairs by subdivision or have their walls inclined at an angle with respect to a plane perpendicular to the surface of the structure.
Patent GB-1398083-A (GB)
Title: Electro-mechanical transducer
IPC: H01F7/06
Filed: 1971-06-15
Abstract: 1398083 Electromagnets SPERRY RAND Ltd and J. B. F. CARTWRIGHT 8 June 1972 [15 June 1971] 28023/71 Heading H1P [Also in Division H2] In an electromechanical transducer comprising a coil 7 wound between two end flanges on a cylindrical portion of a magnetically soft, ferromagnetic, movable bobbin 3, each flange is disposed in the gap between a pair of polepieces, e.g. 8, 9 or 10, 11, comprising parallel plates having apertures shaped to admit the flange and spaced apart in the direction of the axis of the cylindrical portion by a distance approximately equal to the thickness of the flange. The bobbin is supported by resilient diaphragms 4, 5, and in the transducer shown, plates 9 and 10 are interconnected by soft magnetic yokes 14, 15, Fig. 3 (not shown) and plates 8, 11 by yokes 12, 13, the plates being magnetized by permanent magnets 16, 17, Fig. 2 (not shown) or by windings, e.g. 26, Fig. 4 (not shown) on the yokes. In a modification (Fig. 4) the inner plate at each end of the transducer is connected through soft magnetic yokes to the outer plate at the other end.
Patent GB-915886-A (GB)
Title: Apparatus for scarfing the ends of driving belts, conveyor belts and the like which are to be made endless
IPC: B24B21/00
Filed: 1961-08-02
Abstract: 915,886. Laminates. GEWEKA A.G. Aug. 2, 1961 [Sept. 17, 1960], No. 28047/61. Class 140. [Also in Groups XXIII and XXV] An endless driving or conveyer belt comprises a layer of stretched superpolyamide, a layer of leather, preferably split chrome leather, and a layer of textile fabric.
Patent GB-471399-A (GB)
Title: Improvements in or relating to a method and apparatus for detecting radio signals
IPC: H01J25/76
Filed: 1936-03-02
Abstract: 471,399. Detecting circuits ; electronmultipliers. FARNSWORTH TELEVISION, Inc. March 2, 1936, No. 28071. Convention date, March 12, 1935. Divided out of 471,199. [Classes 39 (i) and 40 (v)] Radio signals are detected by applying an alternating voltage derived therefrom between opposed secondary electron - emitting cathodes 60, 61, the signal or an intermediate frequency appearing in the circuit of an anode 62 between the cathodes. The time of flight of electrons between the cathodes may be adjusted to correspond to the signal frequency. The cathodes are connected across a tuned circuit 64 earthed at its centre 65 and energized directly or through a radiofrequency amplifier from an aerial 67. The anode 62 may be connected to a steady positive potential source or its circuit may include a tuned circuit 70 fed from an exciting oscillator to interrupt periodically the multiplier action and to feed an intermediate frequency amplifier operating at the interrupting frequency. The cathodes 60, 61 are sensitized with caesium and may be plane, with an applied magnetic field 71. In modifications, the cathodes form opposed semi-cylinders, the magnetic field is omitted, and the anode is a central rod connected to and surrounded by a grid to increase its collection of electrons or is a grid surrounding a light-emitting filament energizing the photo-electric surfaces of the cathodes. The multiplier may be self-oscillating at a frequency determined by an inductance in its anode circuit and may then operate as a regenerative or super-regenerative detector. The self-oscillation periodically interrupting the multiplication may be on a negativeresistance part of the multiplier characteristic or at a difference frequency between the signal and the electron oscillations or between the signal and an exciting radio-frequency. The Specification as open to inspection under Sect. 91 comprises also subject-matter described in Specification 471,199. This does not appear in the Specification as accepted.
Patent GB-410155-A (GB)
Title: Improvements in or relating to machines for making sand cores and moulds
IPC: B22C21/00
Filed: 1932-10-08
Abstract: 410,155. Moulding-machines. DEWRANCE, SIR J., 165, Great Dover Street, Southwark, London. Oct. 8, 1932, No. 28080. [Class 83 (i).] Core-making.-A mould or core box is divided, at right angles to the pattern plate 2, into two parts 6, 7 which are separated after the plate 2 has been lifted clear of the moulded material. The parts 2, 6, 7 can slide on guides 3, 8 of an invertible frame 4 pivoted at 5 and are moved in the correct sequence by a crank disc 9 on a shaft 11 rotated by a hand wheel and a crank disc 10 rotated from the disc 9 through a pin 14 and slot 15. The crank levers 12, 13 are curved so that they can pass the dead centres and so lock the parts against movement until the discs are rotated. The box may be vibrated or rapped during drawing.
Patent GB-275452-A (GB)
Title: Improvements in means for connecting rails or frames to the posts of bedsteads and the like
IPC: F16B12/60
Filed: 1926-11-09
Abstract: 275,452. Rice, V. K., and Yates, H. Nov. 9, 1926. Joints.-A corner joint for bedsteads &c. comprises a socket 2 on the corner post 1, having a top wall and two side walls, and into which projects the end of the side rail 8. Corresponding slots 6, 7 and 9 are formed in the side walls of the socket and in the end of the rail 8, and a wedge 10 is engaged therewith, forcing the inner end of the side rail against the inner end of the socket. The wedge 10 may be carried by a chain 11.
Patent GB-279842-A (GB)
Title: Method and arrangement for obtaining a perfect high vacuum in electric discharge tubes
IPC: H01J9/38
Filed: 1927-10-24
Abstract: 279,842. Loewe, S. Oct. 26, 1926, [Convention date]. Vacuum tubes. - In producing high vacua in electric discharge tubes, and particularly in amplifier valves with thoriated tungsten filaments, by dispersing magnesium from an alloy of magnesium after the pumping process, gas is separately extracted from the magnesium by heating it to a dull red heat before any of it is dispersed but after the electrodes have been freed from gas. A plate, ring or other part 4 of magnesium may be supported at a distance from the anode 3 by a thin nickel or tungsten wire 8 fixed in the press 2 so that the part 4 and the electrodes may be independently heated. The electrodes 3 may be freed from gas by heating by a high-frequency coil 6. The coil is then raised to the position 5 to heat the magnesium 4 to free it from gases occluded, for example, in the oxide or its surface and then, after pumping extracted gases through the socket 7, to disperse a part of the magnesium. To facilitate heating by eddy currents, the magnesium 4 is larger than the pieces usually dispersed but the size of the part 4 may be decreased by using current of very high frequency, preferably above 1 million cycles per second. The magnesium 4 may be supported from the press or from the electrodes by heatinsulating members such as mica strips and may be replaced by a, thin plate of metal such as nickel carrying a small piece of magnesium wire or strip.
Patent GB-959075-A (GB)
Title: Improvements relating to helicopters
IPC: B64C27/32
Filed: 1962-07-23
Abstract: 959,075. Helicopters. UNITED AIRCRAFT CORPORATION. July 23, 1962 [Aug. 11, 1961], No. 28306/62. Heading B7W. A helicopter has, in a tail section 24, at least one elongated slot 28 extending fore-and-aft in the down-wash from rotor 12, fluid being discharged out through the slot or slots to promote circulation around the surface of the fuselage in the vicinity of the down-wash to produce a resultant force counteracting the torque of rotor 12. Gas from engines 16 passes through duct 40 to chamber 42, Fig. 2; a valve 44 operated from rudder control 50 controls the flow through duct 40, the excess gas being by-passed to an exhaust opening in the rear of the fuselage ; a further valve 62 operated from control 60 reduces the flow through duct 40 when rudder 54 is effective. Valve 44 or 62 can be controlled together with the collective pitch of rotor 12 which also has cyclic pitch control. In Fig. 3 (not shown), two slots in section 24 have control flaps which can be operated collectively or differentially together; when operated differentially, the force due to jet reaction changes the total lateral force.
Patent GB-1433491-A (GB)
Title: Soil cultivating implements or harrows
IPC: A01B33/08
Filed: 1973-06-14
Abstract: 1433491 Rotary harrows; coupling to tractors C VAN DER LELY NV 14 June 1973 [18 April 1973] 28466/73 Headings A1B and A1P A rotary harrow comprises a frame 1 supporting two frame portions 11 which carry power-driven soil-working members 10, and each frame portion 11 is free to move up and down independently of the other to accommodate undulations of the ground in spite of the large operating width of the harrow. Each frame portion 11 is connected to the frame 1 by means of two parallelogram linkages 15 (Fig. 4) or by means of two cranks 77 and 83 (Figs. 7 and 8). Each frame portion 11 is supported from the ground by a roller 39 adjustably secured to the frame portion 11. Each frame portion 11 is prevented in Fig. 4 from moving along the frame 1 by rods 57, but the coupling points 85 of the cranks 83 in Fig. 7 are allowed to move slightly along the frame 1 by slotted or elastic bearings. Shaft 29 (Fig. 7) is driven by the tractor power-take-off and power is transmitted via gear box 26, shafts 24, overload clutches 23, interchangeable gears 28 and gearboxes 22 to pinions 21 on the soilworking members 10. The frame 1 comprises beams 2, 3, 5 and 6 connected by plates 7. Screens 48 and 54 (Fig. 4) are pivoted to the frame portions 11.  Transport of the harrow is effected by fitting ground wheel supports 63 to frame brackets 61A, 61B, 61, and pinning arms 67 to stub shafts 60 on the frame 1. Then a draw bar 70 (Fig. 3) is fitted into sleeves 69 on the frame 1. The harrow rests on a footplate 75 of the draw bar 70 and on the wheels 66 while the tractor is uncoupled from the coupling frame 30 and then coupled to the draw bar 70 by adjusting the height of the foot plate 75. Chains 16 limit downward movement of the frame portions during transport.
Patent GB-298235-A (GB)
Title: Improvement in pneumatic percussive tools
IPC: E21B7/12
Filed: 1928-10-04
Abstract: 298,235. Ingersoll-Rand Co., (Assignees of Hansen, C. C.). Oct. 6, 1927, [Convention date]. Percussive drills. - A submarine rock drill K is provided with a tubular mud guard F adjustably carried by the foot E of the guide frame D and connected thereto by springs S which prevent it from rising when the drill is hauled up for changing the steel.
Patent GB-171860-A (GB)
Title: Improved means for raising water and other liquids by compressed air
IPC: F04F1/18
Filed: 1920-10-08
Abstract: 171,860. Handley, G., and Bullock, P. W. Oct. 8, 1920. Conveyer apparatus, injector.-Apparatus for raising liquids comprises a Venturi tube d through which liquid is forced by compressed air from a nozzle c into a centrifugal or other separating chamber g where the air separates from the liquid and passes by a pipe i to the inlet side of the compressor which feeds the nozzle c. The liquid is forced up the pipe h by the pressure of the separated air. A valve may be arranged between the pipes a, i to regulate the relative pressures in the two pipes, and a second valve may be arranged in the pipe i to admit fresh air to the compressor. The compressed air may be delivered to the pipe d by a number of nozzles surrounded by a perforated sleeve. A floatvalve k prevents liquid from entering the pipe i.
Patent GB-914257-A (GB)
Title: Improvements in or relating to blind screw and nut fasteners
IPC: F16B19/10
Filed: 1959-08-21
Abstract: 914,257. Rivets, locking - nuts &c. SHIELDS, R. (Lok-Fast Inc.). Aug. 21, 1959, No. 28593/59. Class 89 (1). A fastener for insertion and clinching from one side of a workpiece comprises a bolt 6, Fig. 1, having a head 11 with undercut groove 12, at one end, and screwthreads 13 at its other end, a malleable collar 7 adjacent the head, and a sleeve 8 with conical end 21 adjacent the collar and end 22 entering a counterbore 29 in a nut 9 engaging threads 13. The nut and bolt are turned relatively to swage the collar over the sleeve to form a blind head. A groove 15 in the bolt-shank is substantially hidden by metal moved during thread-rolling. Sleeve end 22, Fig. 5, is formed as a shallow cone to deform the nut threads into locking engagement with the bolt threads during final tightening and breaking at groove 15. Work-engaging face 26 of the nut is shallowly-recessed so that the upper end of the nut is distorted to grip the bolt-threads. In another arrangement, the nut is shaped to fit a countersink in the workpiece.
Patent GB-364020-A (GB)
Title: Improvements in the treatment of materials made of or containing cellulose derivatives
IPC: D06M13/07
Filed: 1930-09-25
Abstract: 364,020. Treating artificial silk, straw, &c. BRITISH CELANESE, Ltd., 22, Hanover Square, London. Sept. 25, 1930, No. 28685. Convention date, Oct. 8, 1929. Addition to 363,426. [Class 2 (ii).] Filaments, threads, straws, &c. made of or containing cellulose acetate or other organic esters of cellulose or cellulose ethers are treated with a mixture of a solvent for the cellulose ester &c. and a non-solvent less volatile than the solvent as is used in the process of the parent Specification, under such conditions that the filaments, threads, &c. are united into a larger unitary product either uniformly along their length or intermittently, while at the same time the lustre of the material is subdued. Generally the treatment mixture will contain a relatively high proportion of solvent, for example, in the case of materials made of acetone-soluble cellulose acetate, a mixture of 80-95 parts of acetone and 20-5 parts of xylene is suitable. The treatment may be applied continuously with the production of the materials by either dry or wet methods, for example, the liquid mixture may be applied, when dry spinning, in the spinning chamber itself ; or while the materials are travelling from one package to another. The liquid may be applied by means of a wick, roller, &c., or as a spray. In the case of straws, the material is subjected to a flattening operation, as by passage between rollers which may be heated. To obtain ornamental effects, a dyestuff may be dissolved in the liquid. In examples, a mixture of 80 per cent acetone and 20 per cent xylene is applied by means of a flannel wick to filaments of cellulose acetate during their passage through the spinning cell and at distances of 18 inches and 6 feet from the spinning jet; to recently spun cellulose acetate silk there is applied by means of a roll or wick while it is being wound from bobbin to bobbin, 90 per cent aqueous acetone. Specifications 325,823 and 326,462, [both in Class 2 (ii), Cellulose &c.], are referred to.
Patent GB-829242-A (GB)
Title: Spectacle frames for use in sight-testing apparatus
IPC: A61B3/04
Filed: 1957-09-12
Abstract: 829,242. Sight-testing trial frames. WENK, C. Sept. 12, 1957 [Sept. 13, 1956]. No. 28732/57. Class 97(1) The trial frame comprises a central part from each side of which extend parallel bars a and b on which lens frames d are slidable. A threaded nut e is provided in each bar b for adjusting the interocular distances. The central part of the frame has an adjustable nose bridge c, and each lens frame has connected thereto a side arm f.
Patent GB-173882-A (GB)
Title: Improvements in or relating to separating or sorting apparatus and the like
IPC: C23C24/04
Filed: 1920-10-11
Abstract: 173,882. Lane, C. J., and Galvanizing Equipment Co., Ltd. Oct. 11, 1920. Rotary sieves.-Sifting-apparatus comprises a stand 10 provided with bearings to receive and support, in a slightly inclined position, a drum 11 containing the material to be sifted, and an open-ended rotary sieve 32 mounted with its axis below and parallel with that of the drum, the sieve being of conical shape so that its lower surface 33 has a slight downward inclination in the opposite direction to that of the drum. The apparatus is adapted for use in connection with the process for coating metallic articles described in Specifications 161,665, [Class 82 (ii), Washing granular &c.], and 165,176 [Class 51 (ii), Furnaces and kilns for applying &c.], consisting in tumbling the articles in contact with powdered material in the drum 11. After the coating process has been completed, the drum is inserted in the frame 10, and any excess of the powdered material is separated from the articles by the sieve. The lower end of the drum is supported on rollers 14, and the upper end carries a shaft 13 which is inserted in a bearing 15, Fig. 4, comprising a semicylindrical portion 16 with an upstanding extension 17 and a complete cylindrical portion 18. Longitudinal movement of the shaft is prevented by the engagement of a bolt or peg 19 with a groove on the shaft. The bearing 15 is integral with a casing 23 containing a wormwheel rotated by means of a worm on a shaft 22 provided with fast and loose pulleys. A clutch mounted in a slot in the shaft of the worm-wheel is adapted to be moved into engagement with a slot on the end of the shaft 13 by means of a rod 24 carrying a hand-wheel 25. The lower end of the drum extends into a housing 26 with a removable cover 27, the materials to 'be sifted passing to the sieve along a shoot 29. One end of the sieve is mounted on rollers 31, and the other end carries a shaft mounted in a bearing 30. The fine material passing through the sieve falls into a trough 40, and is carried by a screw conveyer 39 to a discharge opening 41, which may be connected by a shoot 50, Fig. 3, to an elevator 51 which carries the material to a hopper 52, The articles passing over the sieve are delivered into a shoot 34 provided with a canvas curtain or flap 36 to prevent the escape of dust. The sieve and conveyer are rotated from the shaft of the wormwheel by a chain 42. The hopper 52 is provided with a tubular outlet 53, Fig. 5, surrounded by a screw-threaded socket 54 adapted to receive a screw-threaded nipple 56 which also surrounds the outlet 53. The nipple is not screwed home so that it is free to rotate. A tubular member 60 is secured to, and rotates with, the nipple, and is provided with a discharge opening 61 to which the material from the hopper is carried by a screw conveyer driven by worm gearing from an electric motor 63, Fig. 3. The tubular member 60 is provided with a handle 64 with an adjustable grip 65 controlling the switch for the motor.
Patent GB-1101948-A (GB)
Title: Retaining mechanism for a ring display device
IPC: A47F7/024
Filed: 1966-06-27
Abstract: 1,101,948. Releasable fastenings. UNCAS MANUFACTURING CO. 27, June, 1966 [2, May, 1966], No. 28780/66. Heading E2A. Rings engaged in slots 41 in a velvet covered deck 40 and in an underlying support 15 are retained by a plate 18 sliding between the deck 40 and support 15. The plate 18 has holes corresponding to the slots in the deck and fingers 48 projecting into the holes so that in one position of the plate a spring urges the plate so that the fingers engage the rings and in the other position of the plate the fingers are disengaged. The plate 18 is connected to an operating rod by a bar slidable in an aperture in the support. A plate 20 also has openings corresponding to the slots in the plate 15 and rests between the deck 40 and the plate 18 to prevent the fingers 48 from bending upwardly. The deck is divided into three areas each with a retaining plate and operating rod.
Patent GB-921488-A (GB)
Title: Rotary welding transformer
IPC: B23K11/06
Filed: 1961-08-09
Abstract: 921,488. Electric transformers &c. YODER CO. Aug. 9, 1961 [Jan. 4, 1961], No. 28803/61. Class 38 (2). A transformer rotating about a horizontal axis is partially immersed in a bath of liquid dielectric in a fluid tight enclosure designed to condense the dielectric vaporized. Fig. 1 shows a welding transformer 13 in a drum 29 mounted on a shaft 10 supported at 12, 14, and Fig. 4 is a simplified view with the wiring shown diagrammatically. Insulated slip rings 23, 24 arranged with brushes supply the transformer primary and similar slip rings 20, 22 connected to pressure and temperature controlled switches 88, 91 in the drum 29 are arranged to break the transformer primary circuit. Switch 95 connected to slip rings 20, 21 is temperature operated, and starts the blower 87 at a lower drum temperature than will operate switch 91. The transformer 13 has a core 43 with alternately distributed primary windings, connected to terminals 47, 49 and thence to the slip rings 23, 24, and single turn secondary windings 44 connected to concentric conductors 55, 56. The welding electrodes 64, 62 are mounted on the conductors 55, 56 and are shown contoured for a tube blank T. The support 12 also carries a bracket 66 holding a motor 67, used only for maintenance purposes, gear-box 68, and clutch and sprocket 69 which connect to sprocket 16 on shaft 10 through chain 70. The hermetically sealed drum 29 is filled to the line 71 with an inert liquid which vaporizes at the transformer operating temperature. The drive rotates sufficiently slowly for gravity to hold the liquid at the bottom, but turbulence is caused by the irregular periphery of the transformer. The drum is ribbed and surrounded by housing 85 which directs cooling air from the blower 87, or may be cooled by a water spray. Conductor 55 is formed with helical grooves 78, 79 and the scoops 74, 74<SP>1</SP> collect liquid which then runs through the radial holes 75, 75<SP>1</SP>, 76, 76<SP>1</SP> into the helical grooves, and, as the shaft rotates, is carried to the annular groove 80, whence it runs through holes 81, 82 back to the drum.