baber/WOPTO huggingface dataset:
Patent GB-639983-A (GB)
Title: Improvements in or relating to electron discharge apparatus
IPC: H01J25/12
Filed: 1942-05-13
Abstract: 639,983. Velocity - modulated tubes. STEVENS, A. H. (Leland Stanford Junior University, Board of Trustees of). May 13, 1942, No. 6521/44. Divided out of 639,981. [A Specification was laid open to inspection under Sect. 91 of the Acts, Aug. 14, 1946.] [Class 39 (i)] A velocity-modulated tube is modified by the introduction of a non-linear admittance so as to exhibit a constant mutual conductance over a range of amplitudes appreciably above zero. The tube is particularly adapted for use as a combined transmitter-detector in a regenerative system for detecting distant objects, for example as described in Specification 639,981, and in which the stated condition is shown to be necessary to combine high-power as a transmitter with sensitivity as a detector. The non-linear admittance may be introduced (1) in the feed-back path, Fig. 1, (2) across the buncher gap, Fig. 2, or (3) across the catcher gap, Fig. 3 (not shown). The buncher resonator 1, Fig. 1, is connected to the catcher 2 by a conventional feed-back line 13 and also by an overbunched klystron system 3, 4 excited by beam from cathode 32. The normal characteristic A, Fig. 4, and over-bunched characteristic B combine to give a curve E having a flat portion F. The detector system 21-27 is that described in Specification 639,982. In the second arrangement, beams from two cathodes 5, 41, Fig. 2, pass through the buncher resonator 1<1>, but the cathodes are so biassed relatively that only the central beam 46 passes on to the catcher, the outer annular beam 48 being reflected by intermediately-biassed grid 45 and passing back in an overbunched condition to the buncher gaps 8, 9. The second cathode 41 carries grids 42, 43 for correctly shaping the fields accelerating the first beam 46. Resonator 1<1> carries a further field-shaping grid 44. In the third arrangement, a third resonator is arranged beyond the catcher resonator and velocity-modulates, with the same signal, an electron beam which passes into the catcher, in the opposite direction to the main beam, in the necessary overbunched condition to produce a constant mutual conductance. To avoid interference by the beams passing on to the opposite bunchers, they may be set at an angle, or deflecting magnetic or electric fields may be employed. The detector consists of a third beam arranged to be fired transversely through the catcher gap and deflected by its field across an apertured electrode to give a rectified signal. Reception is by antennµ or apertures in either the buncher or catcher resonator, preferably the buncher; transmission is similarly preferably by the catcher, but may be by the buncher. A radiation shield 4<1> is provided to prevent direct interaction. Specifications 523,712, 529,771, 530,870 and 531,251 also are referred to.
Patent GB-1522441-A (GB)
Title: Phenolaldehyde resin-impregnated prepregs
IPC: C08J3/28
Filed: 1976-02-19
Abstract: The prepregs are prepared by impregnating a fibrous reinforcing material with a liquid composition which contains both a thermocurable phenol-aldehyde resin and at least one photopolymerisable component (in addition to the phenol-aldehyde resin) and preferably a thermocuring agent for the phenol-aldehyde resin and a photopolymerisation catalyst for the photopolymerisable component, and subsequently exposing the impregnated material to actinic radiation, during which the phenol-aldehyde resin remains essentially in the thermocurable state.
Patent GB-670977-A (GB)
Title: Improvements in or relating to beverage containers
IPC: B67D3/04
Filed: 1949-03-10
Abstract: 670,977. Tapping casks. BARNES, F. J. T. Feb. 7, 1950 [March 10, 1949]; No. 6601/49. Class 21 A bush welded to a metal cask or secured within a sleeve welded to the cask has a bayonet joint connection with a tap, the insertion and turning of which opens a screw-down valve carried by the bush. The bush may be fitted to the drain opening of a cask as described in Specification 534,628. In the embodiment shown the bush 8 carries an externally threaded hollow-ported valve 12 which is engaged at its cruciform portion 18 by splines'in the tap barrel 22 when the bayonet connections of the tap and socket are engaged. Resilient washers 23 and 16 on the tap and valve ensure fluidtight joints. The tap may be of the kind described in Specification 605,157. A groove 27 may be provided in the bush to receive a sealing disc. In an embodiment (not shown) in which the bush is screwed into and sweated to a sleeve welded to the cask, the bush has a conical end portion engaging an inner sharp-edged flange on the sleeve to obtain a tight joint.
Patent GB-583234-A (GB)
Title: Improvements in or relating to appliances for sowing seeds
IPC: A01C7/02
Filed: 1944-04-11
Abstract: 583,234. Seed-sowing appliances. WART, I. R. VAN. April 11, 1944, Nos. 6607 and 23905. [Class 6 (ii)] A seed-sowing appliance comprises a tube C surmounted by a tray B. The lower end of the tube may have a furrowing tine D and drill-covering blade, rake or roller E fitted. The tube may also terminate in several branches, attached by flexible unions and variable as tc their distance apart, for sowing a corresponding number of rows.
Patent GB-1103889-A (GB)
Title: Improvements in copyboard lighting system
IPC: F21V17/00
Filed: 1966-02-15
Abstract: 1,103,889. Reflectors for illuminating copyboards. ITEK CORPORATION. 15 Feb., 1966 [19 Feb., 1965], No. 6609/66. Heading F4R. A reflector, especially for illuminating copy boards, consists of a pair of parabolic halfcylinders 36, 37 having a common focal axis 38 and being divergent outwardly relative to a parabolic cylinder having the same axis. The parts 36, 37 may be adjusted according to marks 41 on a supporting frame 42 and secured in adjusted position by wing nuts 40. A lamp 39 is arranged on the focal axis. The reflectors and lamps are arranged on opposite sides of the copy board and are movable away from these, being simultaneously moved upwards so as to provide for illumination of copies of different sizes. One pair may be adjustable in this way and a second pair, movable laterally of the board in addition, may be provided. For illuminating very large copies, a third pair may be provided.
Patent GB-106281-A (GB)
Title: Improvements in or relating to Waste Heat Boilers and Superheaters.
Inventor: WEIHL ALBRECHT
IPC: F22G1/00
Filed: 1917-05-09
Abstract: 106,281. Weihl, A. May 1, 1916, [Convention date]. Sinuous-tube superheaters; dampers for controlling superheaters.-In a boiler heated by waste gases, the pipe a for the waste gases terminates in branches b, c fitted with dampers e, f, so that the gases may be led either through a superheater h arranged in front of the boiler g or directly to the boiler. The superheating-tubes depend into a chamber d, from which the waste gases pass into the boiler-tubes o.
Patent GB-160461-A (GB)
Title: An improved method and apparatus for compounding direct electric current motors
IPC: H02P7/282
Filed: 1921-02-28
Abstract: 160,461. Akt.-Ges. Brown, Boveri, et Cie. March 19, 1920, [Convention date]. Exciting.-The field coil h, Fig. 1, of a continuous-current motor a is excited by a voltage which, as shown by curve III, Fig. 2, remains constant at a value En while the motor current increases to a limiting valve in and thereafter rises with further increase of the current. This is effected by employing two exciters e, f connected in series and in opposition, both being excited by coils c, d in series with each other and taking a current proportional to the motor current from a resistance b. The exciter e has a steeper volt-excitation characteristic I, Fig. 2, than that of the machine f, shown at II, and the machine f has a constant excitation coil g in opposition to the main coil d. As the ampereturns iH in the coils c, d increase, the volts of the machine e rise steadily, while those of the machine f fall until they reach zero, when the effects of the coils g, d neutralize each other at the value iv, and then reverse, as shown at II. The machines are so designed that the resultant excitation volts on the coil h, obtained by adding the ordinates of curves I and II are constant over the range indicated by in and rise thereafter. To increase the steepness of the rising part of the resultant curve III, the machine e may have a coil i which is excited by the sum of the voltages of the machines e, f.
Patent GB-829922-A (GB)
Title: Episcopic optical projection apparatus
IPC: G03B21/08
Filed: 1957-04-08
Abstract: 829,922. Optical-projection apparatus. BUSH, L. C. M. Feb. 28, 1958 [April 8, 1957], No. 6746/57. Class 97(1) Episcopic projection apparatus has an upright cabinet with a sheet of plain glass p at the top to receive the image and contains a movable carrier for lamps and objective and a movable object carrier. In the form shown the removable object carrier m is supported on brackets i attached to a plate j the edges of which slide in grooves k 1  in guide members at the side of the cabinet. The lamp housing n carries the objective o and is attached to a plate a guided in grooves k 2 . It is connected to the upper end of the casing by a bellows v. The plates f, q are connected by cables s 1 , s 2  to shafts t 1 , t 2  rotatable by knobs at opposite sides of the casing but restrained by adjustable friction devices, not shown.
Patent GB-291542-A (GB)
Title: A cabinet for keeping eggs in a condition for hatching
IPC: A01K41/00
Filed: 1927-03-11
Abstract: 291,542. Mercer, T. March 11, 1927. Preserving eggs.-A cabinet for preserving eggs is formed with an air jacket C<1> extending between inner and outer walls D, D<1> of wood or sheet metal and is provided with drawers E fitted with movable trays F arranged a little above the bottoms of the drawers and provided with apertures within which eggs may be placed to rest in the bottom of the drawers. The trays may be constructed of wire mesh or perforated metal. Each tray F is less in width from the front to the rear than its drawer and is provided with handles G preferably hinged, which pass through the front of the drawer and by means of which the tray may be moved relatively to the drawer without opening the latter, the eggs thus being caused to turn.
Patent GB-583523-A (GB)
Title: Improvements in or relating to magnetic recording heads
IPC: G11B5/00
Filed: 1944-04-13
Abstract: 583,523. Magnetic recording heads. STEVENS, A. H. (Armour Research Foundation). April 13, 1944, No. 6848. [Class 40 (ii)] In.a magnetic recording head, a recording element 4 of wire passes through a passageway in a magnetized block 12 forming the recording magnet, the passageway being constituted of a narrow portion 13, Fig. 2, into which the wire is constrained and which is only just wide enough to take the wire, and a further portion 14 wide enough to accommodate a splice, and ramps are provided at the entrance to the passageway to guide a splice into the wide portion. The ramps may be formed in the block 12 as at 23, Fig. 2, or separate non- magnetic members 31, Fig. 7, may be attached to the block. A spring-urged retainer 15 with extensions 20 at each end of the passageway may be provided to complete the passageway, the retainer being arranged to be lifted by a finger-piece, not shown, to permit removal and insertion of the wire. In the form shown in Figs. 4 to 6 (not shown), the passageway has a cross-section of keyhole-shape. Fig. 1 shows the general arrangement of the recording apparatus. The element 4 is fed from a reel 2 through demagnetizing head 6 over a changedirection pulley 7 to the recording head 11 and then via change-direction pulley 9 and levelwinding arm 5 on to the take-up reel 3.
Patent GB-1216175-A (GB)
Title: Improvements in or relating to photoconductive coatings
Inventor: KOEHLER FRANK THEODORE JR
IPC: G03G5/05
Filed: 1969-02-07
Abstract: 1,216,175. Photoconductive composition. NATIONAL STARCH & CHEMICAL CORP. 7 Feb., 1969 [12 Feb., 1968], No. 6849/69. Heading H1K. A photoconductive coating composition comprises ZnO dispersed in a solution or emulsion of a copolymer of vinyl acetate and 1À4 to 20 wt. per cent of at least one mono-ester of maleic acid. The ester is a monoalkyl maleate ester containing 1-10 C atoms in the alkyl radical thereof or a mono-aryl maleate ester. In the specific embodiments, the ester may be 2- cyanoethyl maleate, ethyl maleate, cyclohexyl maleate or benzyl maleate; or the copolymer may be a terpolymer including ethyl acrylate. The coating composition can be made in an organic solvent or water together with a dye mixture and coated on a plastics, paper or metal substrate to form an electrophotographic plate. Additives to the composition may be di. alkyl phthalates, TiO 2 , silicone or alkyd resins.
Patent GB-409116-A (GB)
Title: Improvements in or relating to multiplex signalling systems
IPC: H04J3/04
Filed: 1933-03-07
Abstract: 409,116. Multiplex signalling. MONTANI, A., 36, Via XX Settembre, Genoa, Italy. March 7, 1933, No. 6857. Convention date, April 16, 1932. [Classes 40 (iii) and 40 (v).] A distributer for multiplex line or wireless telephony or television comprises a valve with several plates which are impinged upon in turn by a cathode stream reciprocating in one plane. Five telephone or television sets 23 are connected to an output transformer 30 via the five separate plates 1 of a single valve 6, and the stream from the hot or cold cathode 7 is reciprocated by the plates 9, 10, which are energized by the crystal-controlled oscillator 33, so that the stream closes circuits for the sets 23 in succession. A similar arrangement with an independent oscillator of equal frequency is used at the distant station. In a modification, Fig. 6 (not shown), two valves such as 6, Fig. 2, having different numbers of plates are connected in series and are energized at speeds of which one is an integral multiple of the other. Specifications 289,102, [Class 40 (v)], and 362,943 are referred to.
Patent GB-100489-A (GB)
Title: Improvements in or relating to Motor Power Plants.
IPC: B63G8/10
Filed: 1916-01-05
Abstract: 100,489. Westinghouse Machine Co., (Assignees of Smith, W. w.). Jan. 9, 1915, [Convention date]. Motor power plant.-Motor installations, adapted particularly for submarine propulsion and designed to operate efficiently under a wide range of loads, include both turbines or engines and electromotors coupled for joint or alternative operation and arranged so that the turbines or engines may be employed to drive the electromotors as generators for charging the storage battery. Three installations are described, each having two propeller shafts. In the first installation, Fig. 1, each propeller shaft 1 is coupled direct to an electromotor 3, and through gearing 6, 5 to two turbines or engines 2, which may work separately or in series. By suitable manipulation of the couplings 4, 7, 8, the shaft 1 may be driven by one or both turbines 2, or by the electromotor 3, or by both motor and turbines, or the motor may be driven by the turbines as a generator. In the second installation, two electromotors are provided, one being coupled to each pinion 5. In the third installation, each shaft 1 is connected through gearing to one turbine or engine and two electromotors.
Patent GB-791333-A (GB)
Title: Preparations for improving the soil
IPC: C05G1/00
Filed: 1954-03-09
Abstract: An iron-complexing soil improving preparation consists of a fertilizer, defined below, and a carboxylated and/or sulphonated amine of general formula: <FORM:0791333/I/1> in which x and y are 1 to 3, A is COO. Me or -SO3Me and B has the same meaning as A or is a hydroxyl group, Me is hydrogen, K, Na, NH4, Ca, Mg, Cu or Zn, and R is-(CH2)zD, C6H5 or <FORM:0791333/I/2> z being 1 to 4 and D being -CH3, -C2H5, -C3 H7, or, <FORM:0791333/I/3> Specified compounds are ethylene diamine tetracetic acid, butylene diamine tetrapropionic acid, nitrilo triacetic acid and nitrile trimethane trisulphonic acid.  Structural formulae for other variants are included.  The fertiliser is defined as being mono-, di- or tri-calcium phosphate, calcium metaphosphate, calcium-magnesium phosphate or super or triplesuper phosphate or a nitrogenous fertilizer such as ammonium salts, sodium nitrite, cyanamide, urea or urea-formaldehyde condensation products.
Patent GB-672695-A (GB)
Title: Improvements in web-tensioning mechanism for use on printing machines
Inventor: BENNETT THOMAS RICHARD
IPC: B65H23/08
Filed: 1949-03-14
Abstract: 672,695. Automatic web-tension control systems. HOE & CO., Ltd., R. March 14, 1950 [March 14, 1949], No. 6975/49. Class 38 (iv). In an automatic web-tensioning system comprising a jockey-pulley operating a two-way switch controlling a reversible brake adjusting motor, the datum-tension is adjusted by a nut and screw mechanism 22 which rocks a plate 19 carrying the pivot 26 for the switch-actuating cam 32. The cam 32 is rocked by a link 29 connected to the jockey pulley, Fig. 1 (not shown), an bears on the roller end 33 of a spring- loaded moving contact carrier 35 adapted to bridge fixed contacts 37 or 38. Tension adjustment may be made by a handle 53 or remotely by switches controlling a motor, Fig. 7 (not shown), belt driving the pulley 24<SP>1</SP>. A mechanical limit stop prevents jamming of the nut and screw mechanism at the limit of travel, Fig. 5 (not shown). A potentiometer 50 moved by a linkage 46 ... 48 from the cam 32 may be used to provide a remote electrical indication of the tension.
Patent GB-579468-A (GB)
Title: Improvements in heat insulated casings for heat exchangers
IPC: C21B9/10
Filed: 1944-04-17
Abstract: 579,468. Tubular heat-exchangers. MELTON, G. B., and PARRIS, C. W. April 17, 1944, No. 7043. [Class 64 (iii)] The walls of heatexchangers, e.g., economizers, heated by flue gases are formed of removable panels some or all of which are carried by, e.g., V-shaped members 3, Figs. 1, 2, 3, pivotally connected by brackets 1 to the centres of the panels and supported by hinges carried by brackets 2, 2a secured to the tube-plates 5 of the exchanger, so that the panels can be swung outwardly to facilitate cleaning of the heat exchange surfaces. The panels are provided on their outer surfaces with heat insulation 4a, and the gaps between the insulation on the adjoining panels are filled in by insulation carried by removable plates 6. Thus, the exchanger is provided with a smooth outer surface.
Patent GB-821169-A (GB)
Title: Inhibition of foaming in steam generation
IPC: F28G9/00
Filed: 1957-03-04
Abstract: Foaming of boiler feed water is prevented by adding a small amount of polyoxyether formed by condensing a tri-hydric aliphatic alcohol of 3 to 6 C atoms (e.g. glycerol or hexane triol) with ethylene oxide and propylene oxide, and having a molecular weight of 1500-6000.  Where the water contains magnesium salts small quantities of tannin, sodium lignin sulphonate, or hydrolysed lignin sulphonates may also be added.  U.S.A. Specification 2,733,272 is referred to.
Patent GB-984850-A (GB)
Title: Improvements relating to oil-impregnated electric cables and the manufacture thereof
Inventor: JOHNSON OLIVER SANDERS
IPC: H01B13/30
Filed: 1963-02-21
Abstract: In the manufacture of oil-impregnated electric cable the core, comprising a conductor or conductors surrounded by an impregnatable material such as paper, is wound overall with a tape made of, or coated with material having a fusing temperature of, say, 130 DEG C. after which a length is dried under vacuum whilst maintained at a lower temperature, say 110 DEG C.  The temperature is then increased so that the tape or the coating thereon fuses to form when cool a continuous and substantially waterproof seal around the core.  The seal may be removed, or breached at intervals, immediately before or during the process of sheathing the core with lead or other metal. The tape may be made wholly of a polyolefine or other thermoplastic material or may comprise a metal base coated with thermoplastic material or low melting point solder.  With the coated metal type of tape two layers may be wound on the core, with coated sides contacting, and fusion may be effected by passing current through the tape.
Patent GB-354218-A (GB)
Title: Improvements relating to a combination purse and note case
IPC: A45C1/08
Filed: 1930-03-04
Abstract: 354,218. Combined purses and note cases. KAUFMANN, V. S., 133, Oxford Street, London. March 4, 1930, No. 7099. [Classes 18 and 133.] A combined purse and notecase comprises a purse proper of which the two halves are fitted with frame members 1 hinged together and extending to the bottom of the purse, and a flap 5 secured externally to the purse and provided with pockets 7 extending across the inner face thereof. Gussets 3 are secured between the frames, and the flap can be fastened to one of the purse walls by a press button &c. Pockets may also be provided on the exterior face of the flap and on the wall of the purse against which the flap folds; or the pockets 7 may extend across both the flap and the wall of the purse against which it folds. The purse frames may be made with square corners to take mounts of precious metal.
Patent GB-1018271-A (GB)
Title: Improvements in or relating to ladder conveyor belts
Inventor: COLBERT CLIFFORD
IPC: B65G17/06
Filed: 1961-02-27
Abstract: 1,018,271. Endless conveyers. HEATLEY & SON Ltd. Feb. 21, 1962 [Feb. 27, 1961; Nov. 30, 1961], Nos. 7125/61 and 42878/61. Heading B8A. An endless conveyer comprises rods 2, the respective ends of which form pivots for chain links 1. Each of the latter is stamped out from a blank and comprises a bridge piece 9. The links are positioned by lugs 15, 16. In a modification (Fig. 5), the lugs are replaced by a deformable bush 18 which, after the rod 2 has been forced into position, may be welded &c. to the associated link.
Patent GB-1068251-A (GB)
Title: Improvements in or relating to fishing line haulage gear
IPC: A01K73/06
Filed: 1963-02-22
Abstract: 1,068,251. Rope gearing. J. N. MILLER & SONS Ltd., and W. P. MILLER. Feb. 24, 1964, No. 7164/63. Heading F2Q. In a fishing line haulage gear, a haulage pulley 1 is rotatably mounted on a driving shaft 3, being connectable thereto by means of clutch parts 4, 5, and a line 19 is pressed into good frictional contact with a V-groove 2 in the pulley 1 by a spring-pressed wheel 9. Movement of an operating lever 6 in one direction causes the pulley 1 to be gripped between the clutch parts 4, 5, and movement of the operating lever 6 in the opposite direction causes brake shoes 8 to engage a brake drum 7 on the pulley 1. The wheel 9 is mounted on a pivoted arm 11 to which is attached a spring 17 which may be stressed by movement of a lever 15 to cause the wheel 9 to move into operative engagement with the line 19. This constitutes a quickrelease mechanism. A finger 20 extracts the line 19 from the groove 2.
Patent GB-339213-A (GB)
Title: Improvements relating to cattle restraining devices for cowhouses
IPC: A01K1/00
Filed: 1930-03-05
Abstract: 339,213. Picken, A. March 5, 1930. Stables.-A cattle restraining device for use in cowsheds, comprises uprights 1 situated at each end of the cowshed apart from the end wall, and a stretched wire 4 with spring 5 spacing the distance between rings 3 adapted to slide on the uprights and be supported thereon by pins 7. Turn-screw adjusters may also be provided to adjust the tension of the wire guard.