baber/WOPTO huggingface dataset:
Patent GB-199894-A (GB)
Title: Improvements in the generation of alternating currents by thermionic devices
IPC: H03B5/10
Filed: 1922-05-12
Abstract: 199,894. Robinson, E. Y. May 12, 1922. Thermionic generators; coupling oscillating and radiating circuits.-The wave-form of the output current of a thermionic generator is given a predetermined form, usually sinusoidal, by modifying the wave-form of the input voltage so as to compensate for the distortion introduced by the curvature of the characteristic. The input voltage may be supplied by an independent source or by reactive coupling. Fig. 1 shows a sinusoidal output wave 3 produced by a distorted input wave 4 which varies the grid potential on either side of a working-point 2 situated near the middle of therising portion of the characteristic 1. When working with considerable negative potential on the grid, an input wave of the form 7 produces half-waves 6 of sine form separated by intervals of no current. The valve 9, Fig. 2, has its grid circuit 11 supplied by an independent source and is coupled to the tuned plate circuit 10 by a coil 12 connected for reverse retro-action. The barmonics produced in the plate circuit 10 owing to the bends of the characteristic are reduced to a minimum by the back coupling. In a modification the grid coupling coil 12 is replaced by a series of circuits tuned respectively to the various harmonics. A similar arrangement is shown in Fig. 4, in which the oscillations are generated by virtue of the back coupling between the plate oscillatory circuit 22 and the grid coil 23, and the harmonics are reduced by the reverse back coupling between the plate coil 27 and the grid circuits 25 tuned to various harmonics. The plurality of circuits 25 may be connected in the plate circuit, and the coil 27 in the grid circuit. The circuits 25 may be replaced by a single coil having large distributed capacity in order that it may resonate to the harmonics. The valve grid is given a normal negative potential by a leaky condenser 28, so that the valve only passes half waves of current. In the valve circuit shown in Fig. 5, the usual back coupling 29, 30 is provided for the generation of oscillations, and an auxiliary back coupling comprising amplifying valves with aperiodic circuits and interconnecting transformers is provided for the damping of harmonics. At each transformer the induced voltage is proportional to the rate of change of the primary current, so that harmonics are emphasised relatively to the fundamental oscillation. The number of transformers used should be odd, or the number of valves even, so that the voltages induced in the grid coil 35 may be in correct phase to produce a damping effect. This effect is much greater for the harmonics than for the fundamental.
Patent GB-134100-A (GB)
IPC: F26B13/02
Abstract: 134,100. Charlesworth, J. Dec. 11, 1918. Passing materials through fluid-supplying apparatus. - Relates to wool and like drying and carbonizing machines in which hot air or gas is forced by a fan 2 through a heater 3 at one end and longitudinally through a chamber 1 extending the length of the lower portion of the machine, the hot air rising through the endless creeper sheets 4 which carry the fibres to and fro in the machine, and the last creeper sheet carrying them under a pressure roller 5 for delivery outside the machine. The invention consists in connecting the usual canopy 6 at the delivery end of the machine to the fan inlet by a, pipe 7, which is passed through one side or end of the machine at the delivery end and then carried forward through the chamber near the bottom of the machine to the feeding end, when it passes through' one side of the machine and terminates at the inlet 8 of the fan, the hot air or gas escaping from the delivery end of the machine being thus led back to the fan through the chamber.
Patent GB-816706-A (GB)
Title: Improvements in electrical fuses
Inventor: EADE DOUGLAS GREY
IPC: H01H85/18
Filed: 1956-05-03
Abstract: 816,706. Fusible cut-outs. BELLING & LEE Ltd. April 18, 1957 [May 3, 1956], No. 13659/56. Class 38 (1). In order to provide a fuse having desired fusing characteristics which will blow more quickly on overload and be more resistant to surges, part (or the whole) of the fuse element is in the form of a coil 6 wound on a glass rod 9, the element being housed in a cartridge having end caps 2, 3 to which it is soldered. The coil is of wire thicker than that required to give said desired fusing characteristics at a particular current rating when the wire is not coiled. On assembly of the fuse the element is slightly tensioned so that its coils do not quite touch. The support for the element may alternatively be a mica strip or ceramic rod or a strip of asbestos paper.
Patent GB-856362-A (GB)
Title: Cylinder cabinet locks
IPC: E05B65/44
Filed: 1958-04-30
Abstract: 856,362. Key locks. PARKES & SONS Ltd., J., and BUTTER, F. J. April 23, 1959 [April 30, 1958], No. 13664/58. Class 44. In a cylinder cabinet lock of the type in which the lock casing with its locking bolt 10 can be rotationally adjusted about a key operated cylinder into any of three predetermined positions so that the lock can be adapted to serve as either a right-hand or left-hand cupboard lock or as a drawer lock, the cylinder being disposed with its tumblers vertically above its key operated rotary plug 14 in each of these three positions so that the key slot in said plug will normally be vertical irrespective of the rotational setting of the lock casing and locking bolt about the cylinder, the locating means for retaining the lock casing and the cylinder in the three predetermined positions of relative rotational adjustment comprises a pivotal catch 21 which is normally accommodated in a housing recess 18 in the body 13 of the cylinder and projects therefrom into any of three locating slots 23 in the cap of the lock casing corresponding to said three positions, the arrangement being such that said catch can be swung about its pivotal axis out of engagement with the particular locating slot to permit relative rotational adjustment of the cap plate and cylinder into either of the other predetermined positions whereupon said catch can be turned about said axis into the newly presented locating slot. The catch has trunnions 20 which engage in slots 19 in the side walls of the recess 18. The outwardly presented edge of the catch is formed with a notch 24 for engagement by a fingernail or screwdriver so that the catch can be turned to its outwardly projecting position so long as the cylinder body 13 is not engaged with the mounting hole in the drawer or door. In a modification the catch instead of having trainnions is pivotally mounted in the recess 18 on a pin in a tangentially disposed bore which crosses the recess.
Patent GB-760840-A (GB)
Title: Improvements in a device including a turbine for driving high speed spindles
IPC: B24B47/14
Filed: 1954-05-11
Abstract: 760,840. Air turbines. ULVSUNDA VERKSTADER AKTIEBOLAG. May 11, 1954 [May 22, 1953], No. 13685/54. Class 110 (3). A turbine driven by gaseous medium has radially extending rotor channels which co-operate at their outer ends with one or more spaces within which a superatmospheric pressure responsive to the rotational speed is produced by the pumping action of the channels, the superatmospheric pressure being used to actuate a member disposed in the conduit which supplies the gaseous medium to the turbine so as to increase the supply on reduction of the rotational speed and vice versa. This arrangement prevents the occurrence of excessive speed under no-load conditions. Compressed air for driving a turbine is fed to the drilled passages 40, 42 of the impulse turbine rotor 12, Figs. 1 and 2, by way of diametricallyopposed channels 48, nozzles 50 and channels 52. The air is exhausted to atmosphere by way of an annular channel 74, passage 72 and holes 76. Passages 40 extend radially in the plane of rotation, while passages 42 are inclined to the plane; this arrangement permits the provision of a large number of passages. The turbine rotor 12 acts like the impeller of a centrifugal fan to create in recesses 54 a superatmospheric pressure which is proportional to the square of the rotational speed. The pressure in one of the recesses 54 is communicated, by way of a conduit extending from a passage 80 to a connection 116, Fig. 3, to one side of a diaphragm 96 where it acts in opposition to springs 110, 112 to control the position of two valve members 86, 88 which throttle the compressed air for driving the turbine in its passage between an inlet 104 and an outlet 106. Spring 110 is adjustable by means of a screw 114 to permit adjustment of the no-load speed of the turbine.
Patent GB-590942-A (GB)
Title: Improvements in brakes
IPC: F16D51/28
Filed: 1944-07-05
Abstract: 590,942. Brakes. BENDIX AVIATION CORPORATION. July 5, 1944, No. 13806. Convention date, Dec. 29, 1943. [Class 103 (i)] [Also in Group XXXII] In an internal expanding brake, the stationary back plate is provided with parts spaced axially of the drum, and the ends of the shoes, or wear adjustment members connected thereto, are arranged to abut on anchor members mounted between the axially spaced parts of the back plate, so that cantilever stresses due to one-ended mounting of the anchors are avoided. The shoes 28, 30 are mounted within the drum 22 on a stationary supporting member 24 which is made by assembling two plates 44, 46 outwardly splayed at 40, 42 to provide room for the ends of the shoes, or members 98 connected thereto, to abut and anchor on sleeves 48. Shafts 50, 80 are journalled in the sleeves 48, the longer shaft 50 being actuated by a lever 52 connected, for example, to a compressed air diaphragm-type cylinder. The bracket 60 provides additional bearing surface for the shaft 50. Levers 66, 68 arranged at opposite sides of the parts 40, 42, are fast on the shaft 50 and are inwardly toed to engage a shoe-spreading lever 84 which is forked to straddle the web of one shoe and is shaped to straddle the sleeve 48. The adjustment member 98 straddles the other side of the sleeve. The toed-in parts of the levers 66, 68 engage the forks of the lever 84 which is thus rotated on the sleeve 48 to spread the shoes 28, 30, a connecting-piece 114 between the forks abutting against the upper end of the shoe 30 whilst the ends 116 of the forked parts of the lever 84 abut against the lower edge 118 of the adjuster 98. A lug 120 on the latter fits between the forks of the lever 84 and prevents displacement of the parts. The lever G6 is extended at 70 to connect with a tension link 74 secured by a bolt 76 to an arm 78 splined to the shaft 80. The shoe-spreading means associated with the shaft 80 are similar to the means associated with the shaft 50. Adjustment for wear is obtained by rotating the head 94 of the screw 96 in the member 98 connected to each shoe to abut on the respective sleeve 48. The adjustment is limited by a spring 112 which bears, through a hole in the member 98, on the screw which becomes locked when the spring enters the groove 108. The head 94 may be toothed and meshed with a wheel 102 on an adjustment shaft 104. The shoes 28, 30 are retracted by springs 124, each anchored to the member 24 at one end, and being passed at the other end, through a hole in the shoe web to be secured to a projection 126 on the rim of the shoe. Specification 590,943 is referred to.
Patent GB-183957-A (GB)
Title: Improvements in or relating to spoke covering discs for vehicle wheels
IPC: B60B7/14
Filed: 1921-05-17
Abstract: 183,957. Dunlop Rubber Co., Ltd., and Matthew, J. S. May 17, 1921. Wheels with non-supporting casings enclosing spokes. -A spoke-covering device for vehicle wheels comprises discs C, D, connected by inclined hooked tension rods E fitted with turnbuckles E'. The disc C which fits closely to the edge of the rim B, is strengthened by strips C<1> carrying lugs C2, and the disc D fits on a collar D<1> which seats on the hub-shell A. The tensionrods E are hooked to the Jugs C<2> and to lugs D<2> on the collar D.
Patent GB-1169593-A (GB)
Title: Crushing Apparatus
IPC: B02C7/08
Filed: 1967-03-23
Abstract: 1,169,593. Jaw crushers. H. W. KOPPERN and H. K. SCHAFER [trading as MASCHINENFABRIK KOPPERN & CO. K.G.]. 23 March, 1967 [23 March, 1966], No. 13870/67. Heading B2A. A crusher comprises opposed discs 5, 11 enclosing an annular outwardly narrowing crushing space, one of the discs 11 being axially reciprocatable. Material is charged via a hopper 6, coaxially to the axis of rotation, through one of the discs. The upper disc 5 is rotated by a motor 9 and pulley 10, so that material contacting the crushing discs 5, 11 is accelerated by more than 1g. The disc 11 is driven by an hydraulic plunger 13 in a cylinder 2 supplied with pressure oil by a pump 15. This hydraulic motor is reversed by a pulsed valve 16 which is in turn controlled via a reversing switch by movement of the lower jaw 11. Crushed material discharges at the periphery of the discs through a baffle ring 22 and may be classified in accordance with its trajectory by an arrangement of partitions. The discs may be mechanically coupled by a pin 14. The crusher may alternatively employ two translationally movable discs with an alternate stroke drive to both discs. The main axis of the crusher may also be horizontal.
Patent GB-1425120-A (GB)
Title: Electrode holder for three-phase electroslag plant
IPC: B23K9/12
Filed: 1973-03-23
Abstract: 1425120 Electroslag remeltirig apparatus INSTITUT ELEKTROSVARKI IMENI EO PATONA AKADEMII NAUK UKRAINSKOI SSR 23 March 1973 14072/73 Heading H5H An electrode holder for a 3-phase electroslag plant comprises a support plate 1 carrying six or a multiple of six consumable electrodes 3 connected at diametrically opposed vertices of a regular polygon via connecting devices 2 to busbars 4, 6 which lead to the electrodes from respective secondaries of one three phase, or three single phase, power supply transformers, wherein the bus-bars 4 carrying phase power to the electrodes and the bus-bars 6 interconnecting mid points of the transformer secondaries run parallel to one another and are disposed in a plane normal to the support plate. Opposite ends of each secondary are connected to electrodes diametrically opposite each other. The number of electrodes is a multiple of 6. The bus-bars are in the form of water cooled tubes and connection to the transformer secondaries are via disconnectors 8. The bus-bars interconnecting the midpoints of the transformer secondary windings are connected in pairs at their points of connection to these midpoints.
Patent GB-1221962-A (GB)
Title: Apparatus and method for reproducing contours of shoe lasts
IPC: A43D8/06
Filed: 1968-03-22
Abstract: 1,221,962. Measuring shoe lasts. BÍR-CIPÍ- SZORMEIPARI KUTATO INTEZET. March 22, 1968 [March 28, 1967], No. 14106/68. Heading G1X. Apparatus for recording the cross-sectional shape of a shoe last 1 at different points along its length, comprises an arrangement whereby the last is supported for rotation about an axis passing through the foot length point along the middle of the last at an angle determined during the designing of the last, a pantograph 16 with a tracing point 21 to follow the contour of the last as it is rotated, and a marker 20 which moves over the surface of a writing table 17, the table 17 rotating with the last and supporting a sheet of paper marked with X and Y co-ordinate lines, so that the cross-section of the last will be accurately traced. The mounting of the last for rotation and the determination of the rotation axis are described in the Specification, the last being located by orientation points 12, 13. Before use the X axis lines on the paper on the table 17 are aligned with the last so that the cross-section is traced symmetrically on the paper.
Patent GB-1375505-A (GB)
IPC: F16K31/365
Filed: 1972-03-27
Abstract: 1375505 Valves J HANSEN 27 March 1972 14154/72 Heading F2V A valve for maintaining a constant discharge volume comprises an inlet 13 and an outlet 14 communicating with opposite sides of a diaphragm 8, a valve member 9 having an inlet slot 15 at one end and having a control edge at its other end, and a rod 7 connected to a plunger 10 rotatable in the valve member and kept in contact therewith under the influence of a loading spring 2. The plunger has a slot 20 co-operating with the slot 15 to a variable extent controlled by the turning of a cap 1.
Patent GB-434712-A (GB)
Title: Improvements in apparatus for cleaning and descaling castings and the like
IPC: B22D29/00
Filed: 1935-05-14
Abstract: 434,712. Sand - blast; rumbles. SCHEMMANN, W., 116, Schwerterstrasse, Boele, and KOTTMANN, F., 31, Eppenhauserstrasse, both in Hagen, Westphalia, Germany. May 14, 1935, No. 14173. [Class 60] [See also Group II] A rotary drum 1 for cleaning and descaling castings 4 and the like is provided with centrifugal devices to inject the cleaning material through apertures 6 in the end walls of the drum. The drum is rotated by supporting rollers 3 and is enclosed in a casing 5. Each centrifugal device consists of two paddles 8 on a shaft 7 rotated at a high speed by a motor 13, and surrounded by shield boxes 12. The cleaning sand or other material is supplied through the pipe 9 and is flung centrifugally by the paddles into the drum. In a modification the end walls of the drum are formed by the stationary plates of its enclosing casing, and the openings for the injection of the cleaning sand are above the axis. The supply pipes for the cleaning material may be oscillated by means of connecting rods and a rotating crank disc so that the jets of cleaning material travel the length of the drum. Specifications 372,560 and 403,263 are referred to.
Patent GB-585960-A (GB)
Title: Improvements in gaseous electric discharge devices
IPC: H01J61/067
Filed: 1944-07-25
Abstract: 585,960. Discharge lamps. BRITISH THOMSON - HOUSTON CO., Ltd. July 25, 1944, No. 14200. Convention date, Dec. 26, 1942. [Class 39 (i)] For easy starting in an electric discharge lamp the spacing between the anode 12 and the cathode 11 is not greater than two mms., preferably one mm., and the distance B across which the discharge extends in operation between the anode and one end of the cathode is substantially greater than two mms., but less than five mms., preferably 3-5 mms. The electron-emissive cathode 11, preferably a triple coil as described in Specification 561,177, and activated according to a procedure given, is preheated to initiate the discharge. It is supported on its leads 13, 14. The anode 12, preferably a thin ribbon of nickel or molybdenum is supported by the lead 15 and may surround or partially surround the cathode. Alternatively, the anode may be a wire forming an extension of the lead 15. Suitable dimensions for the cathode and anode of the specific lamp shown are given. The filling is a mixture of a small amount of mercury and argon at a pressure of, e.g. 0.5-8 mms. of mercury. The envelope 10 may contain a fluorescent material and the lamp base is described in Specification 303,114, [Class 39 (ii)]. The lamp shown starts at 12 volts and has an arc voltage of from 6.25 to 8.5 volts.
Patent GB-988676-A (GB)
Title: Support structures for use in mines
IPC: E21D11/24
Filed: 1961-04-19
Abstract: 988,676. Mine arches; hinges and pivots. M. VON LINSINGEN, [trading as BOCHUMER EISENHUTTEHEINTZMANN & CO.]. April 19, 1961 [April 19, 1960(2)], No. 14214/61. Headings E1E and E2F. The roof cap 4 of a yielding mine arch support is provided with a cup-shaped end portion in which a roller 6 is secured, the roller 6 being connected by a pin 8 to a counter roller 7 secured to the prop. 1. The pin is positioned by a key 9 or a cotter, split pin, screw or cross bolt. The cap 4 incorporating the swivel joint may also be connected to a second cap as by a suitable spigot-and-socket connection, see Figs. 4 and 5 (not shown).
Patent GB-600211-A (GB)
Title: Improvements in or relating to method and means for tensioning reinforcements and products obtained thereby
IPC: B28B23/12
Filed: 1945-06-06
Abstract: 600,211. Tank reinforcements. FREYSSINET, E. June 6, 1945, Nos. 14276 and 14277. Convention dates, June 29, 1943 and June 8, 1944. [Class 69 (i)] [Also in Groups X and XXX] A method of tensioning helical wire reinforcements for a cylindrical concrete tank comprises applying tension simultaneously at a plurality of points A1, A2 ... An spaced apart by so short intervals that between two adjacent points the tension fall due to friction is a small fraction of the tension applied, then shifting the points one by one in consecutive order along the reinforcement. The reinforcements may be of hard steel machine wire having its ends welded or clamped together, and several layers may be tensioned over one another. Both the wall and the cover of the tank may be tensioned in this way, and transverse reinforcements may also be provided, positioned in grooves and tensioned by means of wedges. The tank may be made from pre-formed panels (see Group X) and the tank bottom 57, Fig. 23, is made fast with the lower wall panels P by reinforcing hoop Fa, a packing 58 being used.
Patent GB-1078983-A (GB)
Title: Improvements in or relating to power units
IPC: B21J7/24
Filed: 1965-04-05
Abstract: 1,078,983. Power hammers. U.S. INDUSTRIES Inc. April 5, 1965 [April 13, 1964], No. 14300/65. Heading B3H. [Also in Division F2] A reciprocating power unit, particularly for use in a high energy impact machine, comprises a piston 5, Fig. 1, reciprocable in a cylinder 4 having at one end an annular sealing ring 6 surrounding an abutment 21, whereby. the piston is first movable into sealing engagement with the sealing ring 6 and is then movable further into engagement with the abutment 21. The unit is used in an impact machine of the kind described in Specifications 921,910 and 951,175, wherein the piston 5 is connected to one die plate and the cylinder 4 with its support 2 are connected to an opposite die plate. High pressure gas is released through passage 7 to effect the working stroke when the piston 5 is raised slightly from the ring 6 to break the seal. Ring 6 has a conical bore 17 which cooperates with an annular sealing portion 32 on the piston. The ring also houses a resilient sealing ring 20 of rubber or neoprene which is pressed tightly against the support 2 when the piston engages the. abutment 21, Fig. 4 (not shown). The latter is screwed into the support 2 and is locked therein by a pin 27, Fig. 3 (not shown). A duct 2b is used to exhaust the space below the piston.
Patent GB-822294-A (GB)
Title: Adhesives
IPC: C09J121/00
Filed: 1956-05-08
Abstract: A flexible backing web is coated with an adhesive obtained by stabilizing an auto-oxidizable resin with an anti-oxidant and then adding an elastomeric polymer.  Resins specified are rosin, dehydrogenated and hydrogenated resin and their glycerols and glycerides, polyterpene and coumarone-indene whilst the elastomers are natural and synthetic rubbers (see Group IV (a)). Plasticisers, fillers and colourants may be present.ALSO:An adhesive is obtained by stabilizing an auto-oxidizable resin with an antioxidant and subsequently adding an elastomeric polymer.  Resins specified are rosin, hydrogenated or dehydrogenated rosin and their glycerols and glycerides, polyterphene and coumarone-indene, whilst elastomers are natural and synthetic rubbers, e.g. copolymers of butadiene with either styrene or acrylonitrile, polychloroprene, polyvinyl ethers, acrylate elastomers and their mixtures.  Plasticisers, fillers and colourants may be present.  The antioxidants include polyphenylamines, hydroquinone derivatives, nitrogen derivatives of tetra-acetic acid, and zinc n-dibutyl dithiocarbamate.ALSO:An adhesive is obtained by stabilizing an auto-oxidizable resin with an auti-oxidant and subsequently adding an elastomeric polymer.  Resins specified are resin, dehydrogenated and hydrogenated resin and their glycerols and glycerides, polyterpine and coumarone-indene, whilst elastomers are natural and synthetic rubbers (see Group IV(a)). Plasticizers, fillers and colourants may be present.